Electric control box, air conditioner outdoor unit and air conditioner

Abstract

The utility model discloses an electric control box, an air conditioner outdoor unit and an air conditioner, the electric control box comprises a PCB and an electric device, and the electric device is installed on the PCB; the radiator support is connected with the PCB and used for installing the radiator, the radiator is used for exchanging heat with the electric device, the radiator support is provided with a shielding part on the circumferential outer side of the electric device in heat exchange fit with the radiator, and the shielding part is used for shielding the electric device; the box assembly forms an installation cavity with one side open, a PCB is arranged at the open end of the installation cavity, the box assembly and the PCB are matched to form a heat dissipation air channel, and the radiator is arranged in the heat dissipation air channel. Therefore, the radiator can be arranged on the PCB through the radiator support, and the shielding part of the radiator support can shield the electric device so as to prevent water entering the heat dissipation air channel from splashing on the electric device, thereby achieving a good protection effect on the electric device, and improving the safety and reliability of the electric control box.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of air conditioners, and in particular to an electric control box, an outdoor unit of an air conditioner, and an air conditioner. BACKGROUND

[0002] At present, the electric control box applied to the outdoor unit of an air conditioner is also arranged in an outdoor environment together with the outdoor unit of the air conditioner, and the electric control box can be cooled by air cooling, that is, the electric control box is in an unsealed state.

[0003] In the related art, when the outdoor environment is adjusted to be harsh, such as in the case of typhoon, rainfall, and other harsh weather, rainwater may enter the electric control box and splash on the circuit board, especially on some electrical devices arranged on the circuit board, which may cause short circuit, sparking, and other problems, and thus there is a safety hazard. UTILITY MODEL CONTENT

[0004] The present application aims to at least solve one of the technical problems existing in the prior art. To this end, one object of the present application is to provide an electric control box with good protection effect and high safety and reliability.

[0005] The present application also provides an outdoor unit of an air conditioner.

[0006] The present application also provides an air conditioner.

[0007] The electric control box according to the first aspect of the present application comprises: a PCB and an electrical device, the electrical device being mounted on the PCB; a heat sink and a heat sink support, the heat sink support being connected to the PCB and being used to mount the heat sink, the heat sink being used to exchange heat with the electrical device, the heat sink support being provided with a shielding portion on the circumferential outer side of the electrical device cooperating with the heat exchange of the heat sink, and the shielding portion being used to shield the electrical device; a box assembly, the box assembly forming an open installation cavity on one side, the open end of the installation cavity being provided with the PCB, the box assembly and the PCB cooperating to form a heat dissipation air duct, and the heat sink being arranged in the heat dissipation air duct.

[0008] In the present application, the heat sink support is arranged on the PCB, the heat sink can be arranged on the PCB through the heat sink support, and the shielding portion of the heat sink support can shield the electrical device to prevent water entering the heat dissipation air duct from splashing on the electrical device, thereby achieving good protection effect on the electrical device and improving the safety and reliability of the electric control box.

[0009] According to some embodiments of the present application, the heat sink support comprises a support body provided with at least one connecting portion configured to be connected with the heat sink, and the shielding portion is arranged along the circumferential direction of the support body and is located on the circumferential outer side of the connecting portion; the support body is further provided with an avoiding portion configured to avoid the electrical device.

[0010] According to some embodiments of the present application, the shielding portion comprises a first blocking rib arranged on the support body and protruding away from the side surface of the support body facing away from the PCB, and a second blocking rib arranged on the support body and protruding away from the side surface of the support body facing away from the PCB, and the second blocking rib is arranged on the side of the first blocking rib away from the connecting portion and the avoiding portion and is spaced apart from the first blocking rib, and a first blocking groove is formed between the second blocking rib and the first blocking rib and opens to the side of the heat sink.

[0011] According to some embodiments of the present application, the first blocking rib surrounds the connecting portion and the avoiding portion, and the second blocking rib surrounds the first blocking rib.

[0012] According to some embodiments of the present application, the heat sink comprises a heat dissipation base plate connected with the heat sink support and configured to exchange heat with the electrical device, and a heat dissipation fin connected to the side of the heat dissipation base plate facing away from the PCB and extending away from the PCB.

[0013] According to some embodiments of the present application, the side surface of the heat dissipation base plate opposite to the heat sink support is provided with a second blocking groove opening to the side of the PCB, and at least part of the first blocking rib is inserted into the second blocking groove.

[0014] According to some embodiments of the present application, the second blocking groove extends along the vertical direction; and / or, the cross section of the second blocking groove is arranged in an L shape or a U shape.

[0015] According to some embodiments of the present application, the heat dissipation base plate is provided with a third blocking groove extending along the horizontal direction, and the third blocking groove is configured to shield the first blocking rib.

[0016] According to some embodiments of the present application, the first blocking groove comprises two first drainage sections extending along the horizontal direction, and the two first drainage sections are respectively arranged above and below the connecting portion and the avoiding portion in the vertical direction, and the first drainage section located below is provided with a drainage opening; and a second drainage section extending along the vertical direction and communicating between the two first drainage sections.

[0017] According to some embodiments of the present application, a lower wall of the first drainage section located below the connecting portion and the avoiding portion extends downwardly and downwardly towards the drainage opening side, and an included angle between the lower wall and a horizontal direction is α, and a relationship is satisfied: 2°≤α≤10°.

[0018] According to some embodiments of the present application, a width dimension of the first blocking groove is L1, and a relationship is satisfied: 2.5mm≤L1≤10mm; and / or, a groove depth of the first blocking groove is L2, and a relationship is satisfied: 3mm≤L2≤10mm.

[0019] According to some embodiments of the present application, the box assembly comprises: a first surrounding plate and a third surrounding plate, which are oppositely arranged in a vertical direction; a second surrounding plate and a fourth surrounding plate, which are oppositely arranged and respectively connected between the first surrounding plate and the third surrounding plate, and the first surrounding plate, the second surrounding plate, the third surrounding plate and the fourth surrounding plate surround to form a heat dissipation air duct which is open to the side of the PCB.

[0020] According to some embodiments of the present application, the fourth surrounding plate comprises a baffle, and a side surface opposite to the PCB is provided with a first blocking strip protruding to the side of the PCB, and the first blocking strip is inserted and matched with the first blocking groove.

[0021] The air conditioner outdoor unit according to the second aspect of the present application comprises the above-mentioned electric control box.

[0022] The air conditioner according to the third aspect of the present application comprises the above-mentioned air conditioner outdoor unit.

[0023] Additional aspects and advantages of the present application will be in part apparent and in part pointed out hereinafter. BRIEF DESCRIPTION OF DRAWINGS

[0024] The above and / or additional aspects and advantages of the present application will become apparent and be readily appreciated from the following description, including the appended drawings.

[0025] Figure 1 is a structural schematic diagram of an air conditioner outdoor unit according to an embodiment of the present application Figure 1 ;

[0026] Figure 2 is a structural schematic diagram of an air conditioner outdoor unit according to an embodiment of the present application Figure 2 ;

[0027] Figure 3 is an exploded view of an air conditioner outdoor unit according to an embodiment of the present application

[0028] Figure 4 is a structural diagram of an electric control box according to an embodiment of the present application Figure 1 ;

[0029] Figure 5 is a structural diagram of an electric control box according to an embodiment of the present application Figure 2 ;

[0030] Figure 6 is an exploded view of an electric control box according to an embodiment of the present application

[0031] Figure 7 is a sectional view of an electric control box according to an embodiment of the present application Figure 1 ;

[0032] Figure 8 is a sectional view of an electric control box according to an embodiment of the present application Figure 2 ;

[0033] Figure 9 is a structural diagram of a box assembly according to an embodiment of the present application Figure 1 ;

[0034] Figure 10 is a structural diagram of a box assembly according to an embodiment of the present application Figure 2 ;

[0035] Figure 11 is a structural diagram of a box assembly according to an embodiment of the present application Figure 3 ;

[0036] Figure 12 is a diagram showing the cooperation of a heat sink and a PCB according to an embodiment of the present application

[0037] Figure 13 is a structural diagram of a heat sink according to an embodiment of the present application Figure 1 ;

[0038] Figure 14 is a structural diagram of a heat sink according to an embodiment of the present application Figure 2 ;

[0039] Figure 15 is a front view of a heat sink according to an embodiment of the present application

[0040] Figure 16 is Figure 14 a sectional view at the center line A-A

[0041] Figure 17 is Figure 14 a sectional view at the center line B-B

[0042] Figure 18 is a rear view of the heat sink according to an embodiment of the present application;

[0043] Figure 19 is a structural schematic view of the heat sink support according to an embodiment of the present application;

[0044] Figure 20 is a front view of the heat sink support according to an embodiment of the present application;

[0045] Figure 21 is a structural schematic view of the partition plate according to an embodiment of the present application.

[0046] Reference signs:

[0047] The air conditioner outdoor unit 100;

[0048] The electric control box 10;

[0049] The PCB board 11; the electrical device 12; the heat sink 13; the heat dissipation substrate 131; the second blocking groove 1311; the third blocking groove 1312; the heat dissipation fin 132; the heat sink support 14; the shielding part 141; the first blocking rib 1411; the second blocking rib 1412; the first blocking groove 1413; the first drainage section 14131; the second drainage section 14132; the drainage opening 1414; the connecting part 142; the support main body 143; the avoiding part 144;

[0050] The box assembly 15; the heat dissipation air duct 1501; the heat exchange air duct 1502; the first surrounding plate 151; the second surrounding plate 152; the third surrounding plate 153; the fourth surrounding plate 154; the baffle 1541; the first blocking strip 1542; the second blocking strip 1543; the surrounding plate main body 1544; the fifth surrounding plate 155; the sixth surrounding plate 156; the seventh surrounding plate 157; the mounting support 158; the positioning groove 159;

[0051] The shell assembly 20; the fan cavity 201; the compressor cavity 202; the first side wall 21; the air inlet structure 22; the panel 23; the first panel 231; the second panel 232;

[0052] The partition plate 30; the communication hole 301. DETAILED DESCRIPTION

[0053] The embodiments of the present application are described below in detail, examples of which are shown in the drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary, only for explaining the present application, and cannot be understood as a limitation of the present application.

[0054] The embodiments of the present application are described below in detail, examples of which are shown in the drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary, only for explaining the present application, and cannot be understood as a limitation of the present application. Figures 1-21The electric control box 10 according to the embodiment of the present application is applied to the air conditioner outdoor unit 100 to control the operation state of the equipment in the air conditioner outdoor unit 100 through the electric control box 10. The air conditioner outdoor unit 100 is applied to an outdoor environment.

[0055] The electric control box 10 according to the embodiment of the present application comprises a PCB board 11, electric devices 12, a heat sink 13, a heat sink support 14, and a box assembly 15.

[0056] The electric devices 12 are mounted on the PCB board 11, and the heat sink support 14 is connected with the PCB board 11, and the heat sink support 14 is used to mount the heat sink 13 to be fixed on the PCB board 11 through the connection and cooperation of the heat sink support 14 and the heat sink 13, so as to facilitate the cooperation of the heat sink 13 and the electric devices 12 arranged on the PCB board 11, so that the electric devices 12 can transfer heat to the side of the heat sink 13, and further transfer heat to the outside through the heat sink 13, thereby improving the heat dissipation efficiency at the electric devices 12.

[0057] Further, the heat sink support 14 is provided with a shielding part 141, and the shielding part 141 is arranged on the circumferential outer side of the electric devices 12 in heat exchange cooperation with the heat sink 13, so as to shield the electric devices 12 through the shielding part 141, thereby protecting the electric devices 12, preventing water and other pollutants from entering the box assembly 15 and splashing on the electric devices 12, and improving the safety of the electric control box 10.

[0058] As shown in Figure 4 and Figure 10 The box assembly 15 forms an open installation cavity on one side, and the open end of the installation cavity is provided with the PCB board 11, which can shield the open end of the installation cavity, and a heat dissipation air duct 1501 is formed through the cooperation of the box assembly 15 and the PCB board 11. When the PCB board 11 is connected and cooperated with the box assembly 15, the heat sink 13 is arranged in the heat dissipation air duct 1501, and the airflow flowing through the heat dissipation air duct 1501 can exchange heat with the heat sink 13 to transfer the heat at the heat sink 13 to the outside of the electric control box 10.

[0059] As shown in Figure 7 When the PCB board 11 is installed and cooperated with the box assembly 15, the electric devices 12 are located on the side of the PCB board 11 facing the heat dissipation air duct 1501, and the heat sink 13 is connected and cooperated with the heat sink support 14. The electric devices 12 arranged in the region corresponding to the PCB board 11 and the heat sink 13 can transfer heat to the heat sink 13, and the heat sink 13 transfers heat to the side of the heat dissipation air duct 1501 and realizes heat dissipation and cooling through air cooling.

[0060] As shown in Figure 7 and Figure 12As shown, when the heat sink 13 is connected and matched with the heat sink support 14, the heat sink 13 can shield the electrical devices 12 on the side of the PCB 11 opposite to the heat dissipation air duct 1501, and the shielding part 141 of the heat sink support 14 can shield the electrical devices 12 in the circumferential direction, so that the electrical devices 12 in the PCB 11 can be shielded and protected by the heat sink 13 and the heat sink support 14, and the electrical devices 12 can be prevented from being exposed, so that the water, dust and other pollutants in the heat dissipation air duct 1501 cannot adhere to the electrical devices 12 protected by the heat sink 13 and the heat sink support 14.

[0061] It should be noted that in the electric control box 10, the number of electrical devices 12 arranged on the PCB 11 is multiple, and the electrical devices 12 can include power devices (such as rectifier bridge stacks, inverter modules, etc.), capacitive devices and inductive devices, etc. At the same time, the heat sink 13 can be arranged corresponding to only part of the electrical devices 12, and the electrical devices 12 between the heat sink 13 and the PCB 11 can be shielded by the heat sink support 14, that is, the gap between the heat sink 13 and the PCB 11 is shielded by the heat sink 13, so as to prevent the electrical devices 12 arranged between the heat sink 13 and the PCB 11 from being exposed, and to achieve the waterproof protection effect of the electrical devices 12.

[0062] At present, the electric control box 10 applied to the air conditioner outdoor unit 100 is also arranged in the outdoor environment with the air conditioner outdoor unit 100, and the electric control box 10 can be cooled by outdoor wind, that is, the electric control box 10 is in an unsealed state. In the related art, when the outdoor environment is adjusted to be severe, such as encountering typhoon, rainfall and other severe weather, rainwater exists to enter the electric control box 10 and splash on the circuit board, especially on part of the electrical devices 12 arranged on the circuit board, which is easy to cause short circuit, sparking and other problems, and there is a safety hazard.

[0063] In the present application, the PCB 11 is provided with the heat sink support 14, the heat sink 13 can be arranged on the PCB 11 through the heat sink support 14, and the shielding part 141 of the heat sink support 14 can shield the electrical devices 12 to prevent water entering the heat dissipation air duct 1501 from splashing on the electrical devices 12, thereby achieving good protection effect of the electrical devices 12 and improving the safety and reliability of the electric control box 10.

[0064] In some embodiments of the present application, the heat sink support 14 includes a support body 143, the support body 143 is provided with at least one connecting part 142, and the connecting part 142 is used for connecting and matching with the heat sink 13 to assemble the heat sink 13 on the support body 143. That is, the support body 143 is a mounting carrier of the heat sink 13, and the heat sink 13 can be fixed on the support body 143 by connecting and matching with the connecting part 142.

[0065] The number of the connecting portions 142 is at least one to meet the connection and fitting requirements of the heat sink 13 and the bracket body 143. When the number of the connecting portions 142 is more than one, the connection reliability of the heat sink 13 and the bracket body 143 can be improved.

[0066] Referring to Figure 19 and Figure 20 As shown, the shielding portion 141 is arranged along the circumferential direction of the bracket body 143, and the circumferential outer side of the shielding portion 141 is provided with the connecting portion 142, so that the shielding portion 141 is arranged at a position suitable for avoiding the connection structure to prevent the shielding portion 141 from interfering with the fitting of the heat sink 13 and the connecting portion 142.

[0067] In combination with Figure 19 and Figure 20 As shown, in some embodiments of the present application, the bracket body 143 is further provided with an avoiding portion 144 for avoiding the electrical device 12, so as to facilitate the close arrangement of the bracket body 143 and the PCB 11. It can be understood that the bracket body 143 is arranged on the side of the PCB 11 provided with the electrical device 12, and when the electrical device 12 is avoided by the avoiding portion 144, the heat sink bracket 14 and the PCB 11 can be arranged in close contact, so that the heat sink bracket 14 and the PCB 11 are fitted compactly, and the heat sink 13 can be arranged adjacent to the electrical device 12 to ensure the heat exchange efficiency of the heat sink 13 and the electrical device 12.

[0068] The avoiding portion 144 can be configured as an avoiding hole arranged corresponding to the electrical device 12 on the PCB 11, so that the electrical device 12 can be exposed to the side of the heat sink 13 at the avoiding hole to ensure the heat transfer effect of the electrical device 12 to the side of the heat sink 13 and improve the heat dissipation efficiency of the electrical device 12.

[0069] It should be noted that the positions of the connecting portion 142 and the avoiding portion 144 on the bracket body 143 can be adaptively designed according to the arrangement position of the electrical device 12 on the PCB 11, so that the avoiding portion 144 is arranged at a position corresponding to the electrical device 12 and suitable for avoiding the electrical device 12, and the connecting portion 142 is distributed at a region of the bracket body 143 suitable for avoiding the electrical device 12.

[0070] In further embodiments of the present application, the connecting portion 142 can be configured as a connecting hole for a connecting member (not shown) to pass through, and the connecting member can be connected and fitted with the heat sink 13 to connect and fit the support body 143 with the heat sink 13 through the connecting member. Wherein, the connecting member can be configured as a threaded connecting member such as a bolt, which can be threaded through the support body 143 and threaded fitted with a threaded hole formed on the heat sink 13 to achieve the connection and fixation of the heat sink 13 with the support body 143. Of course, the configuration of the connecting portion 142 is not limited to this, but can also be configured as a clamping structure such as a clamping hook, a buckle, etc.

[0071] As shown in Figure 19 and Figure 20 , in some embodiments of the present application, the shielding portion 141 includes a first blocking rib 1411 and a second blocking rib 1412.

[0072] Further in combination with Figure 12 , the first blocking rib 1411 and the second blocking rib 1412 are both arranged on the support body 143, and the first blocking rib 1411 is arranged protruding away from the side surface of the support body 143 facing away from the PCB 11 to the side away from the PCB 11, and the second blocking rib 1412 is arranged protruding away from the side surface of the support body 143 facing away from the PCB 11 to the side away from the PCB 11, and the second blocking rib 1412 is arranged on the side of the first blocking rib 1411 away from the connecting portion 142 and the avoiding portion 144. That is, in the circumferential direction of the support body 143, the second blocking rib 1412 is arranged on the circumferential outer side of the first blocking rib 1411 to shield and protect the electrical device 12 through multiple layers of blocking ribs, thereby improving the protection effect of the heat sink support 14 on the electrical device 12.

[0073] In combination with Figure 12 , Figure 19 and Figure 20 , the first blocking rib 1411 and the second blocking rib 1412 are arranged in a spaced manner, and a first blocking groove 1413 is formed between the first blocking rib 1411 and the second blocking rib 1412, which is open to the side of the heat sink 13. It can be understood that the first blocking groove 1413 can shield and protect the electrical device 12 arranged on the inner side of the first blocking rib 1411, and when rain splashes on the heat sink support 14, the first blocking rib 1411 and the second blocking rib 1412 can shield the rain, and can guide the rainwater attached to the first blocking rib 1411 and the second blocking rib 1412, so that the rainwater can flow along the extension direction of the first blocking rib 1411 and the second blocking rib 1412, so as to facilitate the drainage of the rainwater, prevent the rainwater from stagnating at the heat sink support 14, and improve the protection effect of the heat sink support 14 on the electrical device 12.

[0074] It can be understood that when the rainwater enters the electric control box 10 and splashes to one side of the radiator support 14, the rainwater can be first shielded by the second blocking rib 1412, and the rainwater shielded by the second blocking rib 1412 can flow along the second blocking rib 1412 to prevent the rainwater from stagnating at the second blocking rib 1412. When the amount of rainwater is large, the first blocking rib 1411 can further play a protective role to increase the difficulty of rainwater splashing from the circumferential direction of the radiator support 14 to the electrical device 12 located inside the first blocking rib 1411, thereby protecting the electrical device 12 arranged inside the first blocking rib 1411.

[0075] As shown in Figure 19 some embodiments of the present application, the first blocking rib 1411 is arranged around the connecting portion 142 and the avoiding portion 144 to fully shield the circumferential outer side of the connecting portion 142 and the avoiding portion 144 by the first blocking rib 1411, thereby improving the protection effect of the electrical device 12 located inside the first blocking rib 1411. At the same time, the second blocking rib 1412 is arranged around the first blocking rib 1411 to fully shield the circumferential outer side of the first blocking rib 1411 by the second blocking rib 1412, and the first blocking groove 1413 is formed in the form of a ring by cooperation of the first blocking rib 1411 and the second blocking rib 1412.

[0076] Therefore, the first blocking groove 1413 is arranged around the connecting portion 142 and the avoiding portion 144 in the circumferential direction, so that the shielding portion 141 can fully shield the electrical device 12 arranged corresponding to the avoiding portion 144 in the circumferential direction, thereby preventing the rainwater and other pollutants entering the electric control box 10 from entering the electrical device 12, improving the protection effect of the electric control box 10 on the electrical device 12, and effectively preventing the electrical device 12 from short circuit, breakdown and other problems.

[0077] As shown in Figure 12 and Figure 13 some embodiments of the present application, the radiator 13 includes a heat dissipation substrate 131 and a heat dissipation fin 132, the heat dissipation substrate 131 is connected with the radiator support 14, and the heat dissipation substrate 131 is used for heat exchange with the electrical device 12, that is, the heat at the electrical device 12 can be transmitted to one side of the heat dissipation substrate 131, and further transmitted to one side of the heat dissipation fin 132 through the heat dissipation substrate 131.

[0078] Referring to Figure 12As shown, the fins 132 are connected to the heat dissipation substrate 131 on the side away from the PCB 11, and the fins 132 extend from the heat dissipation substrate 131 to the side away from the PCB 11. Among them, the fins 132 are multiple, and the direction of each fin 132 is substantially the same as the direction of air flow in the heat dissipation air duct 1501, so as to reduce the resistance of the air flowing through the radiator 13 and ensure the flow effect of the air flowing through the radiator 13. It can be understood that the radiator 13 has multiple fins 132, so as to increase the contact area of the radiator 13 with the air in the heat dissipation air duct 1501, and improve the heat dissipation efficiency of the radiator 13 by increasing the heat dissipation area.

[0079] In combination Figure 12 and Figure 14 As shown, in some embodiments of the present application, the side surface of the heat dissipation substrate 131 opposite to the heat dissipation bracket 14 is provided with a second blocking groove 1311 open to the side of the PCB 11, and at least part of the first blocking rib 1411 is inserted into the second blocking groove 1311.

[0080] In combination Figure 17 and Figure 19 As shown, when the first blocking rib 1411 and the second blocking groove 1311 are inserted and matched, a labyrinth structure can be formed at the matching position of the first blocking groove 1413 and the second blocking groove 1311, increasing the difficulty of the rainwater and other pollutants entering the inside of the first blocking rib 1411 through the shielding part 141, effectively preventing the rainwater and other pollutants from adhering to the electrical device 12 arranged inside the first blocking rib 1411, and improving the protection effect of the electrical control box 10 on the electrical device 12.

[0081] Referring to Figure 12 As shown, when the radiator 13 and the heat dissipation bracket 14 are installed and matched, the second blocking rib 1412 is located outside the second blocking groove 1311, and the second blocking rib 1412 can shield the side edge of the heat dissipation substrate 131, so as to further improve the lateral shielding effect of the second blocking groove 1311 on the heat dissipation substrate 131.

[0082] In further embodiments of the present application, the second blocking groove 1311 extends in the vertical direction, so that the rainwater splashed to the second blocking groove 1311 can flow downward along the vertical direction, that is, the second blocking groove 1311 can limit the flow direction of the rainwater adhering to the heat dissipation substrate 131, so as to prevent the rainwater from contacting the electrical device 12.

[0083] It can be understood that when the heat sink 13 and the heat sink support 14 are connected and matched, the first blocking rib 1411 and the second blocking groove 1311 can play a shielding role. A protective structure can be formed on the inner side of the first blocking rib 1411 through the second blocking groove 1311. Rainwater that passes the first blocking rib 1411 can be shielded by the side wall of the second blocking groove 1311, and rainwater splashed into the second blocking groove 1311 can flow out of the second blocking groove 1311 along the vertical direction.

[0084] As shown in Figure 17 , in some embodiments of the present application, the cross section of the second blocking groove 1311 is L-shaped or U-shaped.

[0085] When the first blocking rib 1411 cooperates with the second blocking groove 1311 with an L-shaped or U-shaped cross section, at least part of the first blocking rib 1411 is arranged at the second blocking groove 1311. The inner side wall of the second blocking groove 1311 can be shielded by the first blocking rib 1411, and the second blocking groove 1311 is open to one side of the heat sink support 14, so that the first blocking rib 1411 is arranged in the second blocking groove 1311.

[0086] As shown in Figure 12 , Figure 14 and Figure 17 , in one specific embodiment of the present application, two second blocking grooves 1311 are arranged on the side surface opposite to the PCB board 11 of the heat dissipation base plate 131. The two second blocking grooves 1311 are arranged at intervals in the width direction of the heat dissipation base plate 131. The two second blocking grooves 1311 are arranged along the vertical direction, and the cross section of one second blocking groove 1311 is L-shaped, and the cross section of the other second blocking groove 1311 is U-shaped. The two second blocking grooves 1311 respectively cooperate with two vertical extension segments of the first blocking rib 1411 to shield and protect the second blocking groove 1311 through the two vertical first blocking ribs 1411.

[0087] It can be understood that the first blocking rib 1411 is arranged in a circumferential direction of the support body 143, and the extension segment of the first blocking rib 1411 for cooperating with the second blocking groove 1311 is arranged vertically to arrange at least part of the first blocking rib 1411 at the second blocking groove 1311 when the heat sink 13 and the heat sink support 14 are connected and matched. At the same time, when the cross section of the second blocking groove 1311 is U-shaped, at least part of the heat dissipation base plate 131 can extend into the first blocking groove 1413 to form multiple protections (i.e. a labyrinth structure) through the heat dissipation base plate 131 and the shielding part 141, effectively preventing rainwater from splashing onto the electrical device 12.

[0088] In the description of this application, it should be understood that terms such as "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. That is to say, the "vertical direction" mentioned above refers to the orientation of the electrical control box 10 when it is installed on the outdoor unit 100 of the air conditioner.

[0089] like Figure 19 As shown, in some embodiments of this application, the first baffle 1413 includes a first drainage section 14131 and a second drainage section 14132. The first drainage section 14131 extends in the lateral direction and is disposed above or below the connecting portion 142 and the clearance portion 144 in the vertical direction. When the first drainage section 14131 consists of two sections, the two sections can be respectively disposed on both sides of the connecting portion 142 and the clearance portion 144 in the vertical direction, that is, a section of the first drainage section 14131 is disposed above the connecting portion 142 and the clearance portion 144, and a section of the first drainage section 14131 is disposed below the connecting portion 142 and the clearance portion 144. The first drainage section 14131 guides the flow direction of water to laterally guide rainwater splashed onto the first baffle 1413, preventing rainwater from dripping onto the electrical device 12.

[0090] Furthermore, the second drainage section 14132 extends vertically, and the first drainage section 14131 and the second drainage section 14132 are connected. Thus, water in the first drainage section 14131 can flow into the second drainage section 14132, or water in the second drainage section 14132 can flow into the first drainage section 14131.

[0091] Reference Figure 19 As shown, it can be understood that the first baffle 1413 includes two first drainage sections 14131 and two second drainage sections 14132. The two first drainage sections 14131 are respectively located on both sides of the connecting part 142 and the clearance part 144 in the vertical direction. The two second drainage sections 14132 extend vertically and are respectively connected between the two first drainage sections 14131. The upper first drainage section 14131 can guide water to the second drainage section 14132, and the second drainage section 14132 can further guide water to the lower first drainage section 14131.

[0092] like Figure 19 and Figure 20As shown, the first blocking groove 1413 is provided with a drain port 1414, and the water in the first blocking groove 1413 can be drained through the drain port 1414, thereby avoiding water accumulation in the first blocking groove 1413. Preferably, the drain port 1414 is arranged at the lower first drainage section 14131, so that the water in the first blocking groove 1413 can be guided to the side of the drain port 1414 and drained out under the guidance of the lower first water blocking groove.

[0093] It can be understood that the water in the upper first water blocking groove can flow into the second water blocking groove, the water in the second water blocking groove can flow into the lower first water blocking groove, and the water in the first blocking groove 1413 can be drained out through the drain port 1414, thereby effectively preventing water from stagnating in the first blocking groove 1413.

[0094] In combination Figure 8 and Figure 13 As shown, in some embodiments of the present application, the heat dissipation base plate 131 of the heat sink 13 is provided with a third blocking groove 1312 extending in the transverse direction, and the third blocking groove 1312 is used to block the first blocking rib 1411 to prevent contaminants such as rainwater in the heat dissipation air duct 1501 from entering the inner side of the first blocking rib 1411, thereby improving the protection effect of the heat sink 13 at the joint with the heat sink support 14.

[0095] Referring to Figure 8 As shown, in some embodiments of the present application, the third blocking groove 1312 can block at least part of the first drainage section 14131 to reduce the amount of water flowing to the first drainage section 14131 through the gap between the heat sink support 14 and the heat sink 13. The heat dissipation base plate 131 can be provided with two third blocking grooves 1312, and the two third blocking grooves 1312 correspond to two first water blocking sections respectively, so as to block the water splashing to the first water blocking section through the third blocking groove 1312.

[0096] As Figure 8 shown, the third blocking groove 1312 is open to the side away from the heat sink support 14, and when the heat sink 13 is combined with the box assembly 15, the third blocking groove 1312 located at the upper part of the heat dissipation base plate 131 can be inserted and combined with the first surrounding plate 151 to position the heat dissipation base plate 131 and the box assembly 15. At the same time, the third blocking groove 1312 located at the lower part of the heat dissipation base plate 131 can correspondingly block the first drainage section 14131 located at the lower part of the support body 143.

[0097] As Figure 19 shown, in further embodiments of the present application, the lower wall of the first drainage section 14131 located below the connecting portion 142 and the avoiding portion 144 extends downwardly to the side of the drain port, so that the first drainage section 14131 can guide the water to the side of the drain port to facilitate the water in the first blocking groove 1413 to be drained out through the drain port.

[0098] Reference Figure 20 The angle between the lower wall and the horizontal direction is α, and the relationship is satisfied: 2°≤α≤10°. When the tilt angle of the lower wall relative to the horizontal direction is in the range of 2°-10°, it can play a good guiding role for the water flow and ensure the water discharge effect of the first drainage trough.

[0099] In a preferred embodiment of this application, the drain outlet is located on the leeward side of the radiator bracket 14, thereby preventing air in the heat dissipation duct 1501 from blowing towards the drain outlet and affecting the drainage effect of the accumulated water at the drain outlet.

[0100] Combination Figure 12 and Figure 19 As shown, in some embodiments of this application, the lower wall of the first drainage section 14131 located above the connecting part 142 and the avoidance part 144 is inclined downward toward the second drainage section 14132, so that the water in the first drainage section 14131 can flow to the side of the second drainage section 14132 under the action of gravity, so as to ensure the drainage effect of the first drainage section 14131 located above.

[0101] like Figure 20 As shown, in some embodiments of this application, the width of the first baffle groove 1413 is L1, and satisfies the relationship: 2.5mm≤L1≤10mm, which can ensure the water supply flow effect at the first baffle groove 1413 and prevent water from flowing to the side of the electrical device 12 due to excessive water volume at the first baffle groove 1413.

[0102] like Figure 19 As shown, in some embodiments of this application, the groove depth of the first baffle groove 1413 is L2, and satisfies the relationship: 3mm≤L2≤10mm, thereby ensuring the waterproof effect at the first baffle groove 1413.

[0103] Combination Figure 10 and Figure 11 As shown, in some embodiments of this application, the box assembly 15 includes a first enclosure 151, a second enclosure 152, a third enclosure 153, and a fourth enclosure 154.

[0104] The first baffle plate 151 and the third baffle plate 153 are oppositely arranged in the vertical direction, and the second baffle plate 152 and the fourth baffle plate 154 are oppositely arranged and connected between the first baffle plate 151 and the third baffle plate 153, so that the heat dissipation air duct 1501 is formed around the first baffle plate 151, the second baffle plate 152, the third baffle plate 153 and the fourth baffle plate 154 and opens to the side of the PCB 11. The heat sink 13 arranged on the PCB 11 can extend into the heat dissipation air duct 1501 through the avoiding structure formed at the fourth baffle plate 154, so that the air in the heat dissipation air duct 1501 can flow through the heat sink 13 to transfer the heat of the heat sink 13 to the outside of the electric control box 10.

[0105] Referring to Figure 10 and Figure 11 It is shown that the fourth baffle plate 154 is provided with a baffle plate 1541 on the side of the PCB 11 on which the heat sink 13 is installed, and the baffle plate 1541 is provided with a first blocking strip 1542 protruding to the side of the PCB 11, and the first blocking strip 1542 is inserted and matched with the first blocking groove 1413, so that the heat sink support 14 and the box assembly 15 can be positioned and matched, and the shielding effect of the heat sink support 14 at the first blocking groove 1413 can be further improved.

[0106] Further combining Figure 7 It is shown that the baffle plate 1541 is oppositely arranged with part of the PCB 11, and the first blocking strip 1542 is arranged to protrude to the side of the PCB 11 from the side surface of the baffle plate 1541 opposite to the PCB 11. When the heat sink support 14 is matched with the baffle plate 1541, the first blocking strip 1542 is located between the first blocking rib 1411 and the second blocking rib 1412, so that the first blocking strip 1542 can shield the matched part of the first blocking rib 1411 and the second blocking groove 1311, and the protection effect of the electrical device 12 arranged on the inner side of the heat sink support 14 can be improved.

[0107] Combining Figure 7 and Figure 10 It is shown that the baffle plate 1541 is formed with an avoiding area suitable for avoiding the heat sink 13, so that the heat sink 13 can extend into the heat dissipation air duct 1501, and two first blocking strips 1542 are arranged at the baffle plate 1541, the two first blocking strips 1542 are arranged in the vertical direction and are located on the two sides of the avoiding area respectively, and the two first blocking strips 1542 correspond to two second drainage grooves arranged in the vertical direction in the first blocking groove 1413 respectively, and the two first blocking strips 1542 are inserted and matched with the two second drainage grooves respectively, so that the first blocking strip 1542 can further improve the protection effect of the matched part of the heat sink support 14 and the heat sink 13 in the air inlet and outlet direction, and prevent the rainwater in the heat dissipation air duct 1501 from entering the inner side of the heat sink support 14 to cause damage to the electrical device 12.

[0108] Combining Figure 4And Figure 6 As shown in the figure, in some embodiments of the present application, the box assembly 15 further comprises a mounting bracket 158, which is used to be connected and matched with the PCB board 11, so as to facilitate the assembly and fixation of the PCB board 11 with the box assembly 15. It can be understood that, in the assembly process of the electric control box 10, the PCB board 11 can be arranged on the mounting bracket 158 first, so as to be fixed (such as clamped, screwed, etc.) by the mounting bracket 158, and then further connected and matched with the surrounding plate structure (such as the first surrounding plate 151, the third surrounding plate 153, etc. mentioned above) through the mounting bracket 158, so as to realize the assembly of the PCB board 11 with the box assembly 15.

[0109] Among them, the shape of the mounting bracket 158 can be configured to be matched with the shape of the PCB board 11, such as: when the PCB board 11 is rectangular, the mounting bracket 158 is correspondingly configured as a rectangular frame structure.

[0110] In some embodiments of the present application, the fourth surrounding plate 154 further comprises a surrounding plate body 1544, which is arranged opposite to the second surrounding plate 152, and the surrounding plate body 1544 is connected with the mounting bracket 158. That is, the surrounding plate body 1544 and the bracket body 143 can be assembled together to the first surrounding plate 151, the second surrounding plate 152 and the third surrounding plate 153.

[0111] As Figure 7 shown, in some embodiments of the present application, the baffle 1541 is further provided with a second blocking strip 1543, and the surrounding plate body 1544 is formed with a positioning groove 159 at the position close to the mounting bracket 158, and the second blocking strip 1543 is used to be inserted and matched with the positioning groove 159, so as to position and match the surrounding plate body 1544 with the baffle 1541, thereby facilitating the assembly of the box assembly 15.

[0112] Combined Figure 6 and Figure 10 shown, in a specific embodiment of the present application, the second blocking strip 1543 extends along the vertical direction, and correspondingly, the positioning groove 159 is also arranged along the vertical direction.

[0113] In some embodiments of the present application, the box assembly 15 further comprises a fifth surrounding plate 155, a sixth surrounding plate 156 and a seventh surrounding plate 157, the fifth surrounding plate 155 and the sixth surrounding plate 156 are arranged opposite and spaced apart in the vertical direction, the seventh surrounding plate 157 is connected between the fifth surrounding plate 155 and the sixth surrounding plate 156, and the seventh surrounding plate 157 is arranged opposite to part of the PCB board 11.

[0114] The fifth, sixth and seventh surrounding plates 155, 156 and 157 surround to form a heat exchange air duct 1502 which is open to the side of the PCB 11. When the PCB 11 is installed and matched with the box assembly 15, the PCB 11 can block the open side of the heat exchange air duct 1502 to limit the air flow path in the heat exchange air duct 1502.

[0115] It can be understood that the fifth, sixth and seventh surrounding plates 155, 156 and 157 can surround to form a heat exchange air duct 1502 which is open to the side of the PCB 11, and form an opening structure (defined by the fifth and sixth surrounding plates 155 and 156) suitable for arranging the electrical devices 12 (such as capacitive devices, inductive devices, etc.) on the PCB 11 to avoid, so that the electrical devices 12 arranged on the PCB 11 extend from the open side of the heat exchange air duct 1502 (i.e. the side of the PCB 11 opposite to the seventh surrounding plate 157), and the air flowing through the heat exchange air duct 1502 can cool the electrical devices 12 located in the heat exchange air duct 1502.

[0116] In some embodiments of the present application, the first surrounding plate 151 and the fifth surrounding plate 155 are coplanar and integrally arranged, so as to save the space occupied by the box assembly 15 in the vertical direction, and make the electrical devices 12 arranged on the PCB 11 in the electrical control box 10 compact.

[0117] It should be noted that the fifth surrounding plate 155 is arranged on the side of the sixth surrounding plate 156 adjacent to the heat dissipation air duct 1501 in the vertical direction. That is, when the fifth surrounding plate 155 and the first surrounding plate 151 are integrally arranged, the sixth surrounding plate 156, the fifth surrounding plate 155 (also the first surrounding plate 151) and the third surrounding plate 153 are sequentially and spaced arranged in the vertical direction.

[0118] It can be understood that the first surrounding plate 151 and the fifth surrounding plate 155 in the box assembly 15 are coplanar arranged, so as to integrate the first surrounding plate 151 and the fifth surrounding plate 155 as the same partition structure, and separate the heat dissipation air duct 1501 and the heat exchange air duct 1502 by the partition structure, that is, the two side surfaces of the partition structure in the vertical direction are respectively towards the heat dissipation air duct 1501 and the heat exchange air duct 1502. The above arrangement of integrating the first surrounding plate 151 and the fifth surrounding plate 155 can reduce the number of surrounding plate structures when the box assembly 15 limits and forms the heat dissipation air duct 1501 and the heat exchange air duct 1502, and makes the heat dissipation air duct 1501 and the heat exchange air duct 1502 closely arranged in the vertical direction, so that the devices (such as the heat sink 13, capacitive devices, power devices, etc.) on the PCB 11 are arranged compactly, and the space utilization rate at the electrical control box 10 is improved.

[0119] It should be noted that the heat dissipation air duct 1501 and the heat exchange air duct 1502 are arranged vertically in the box assembly 15 of the electric control box 10, and the heat exchange air duct 1502 is arranged above the heat dissipation air duct 1501. The devices arranged on the PCB board 11 correspond to the heat dissipation air duct 1501 and the heat exchange air duct 1502 respectively, so that the devices arranged on the PCB board 11 (such as the heat sink 13, the electrical device 12, etc. as described above) can be arranged in the heat dissipation air duct 1501 and the heat exchange air duct 1502 respectively, so as to transfer the heat of the devices to the outside of the box assembly 15 through the air flowing through the air duct structure, thereby achieving heat dissipation and cooling at the electric control box 10.

[0120] When the electric control box 10 is applied to the air conditioner outdoor unit 100, the air inlet side of the heat dissipation air duct 1501 is in communication with the outside of the shell assembly 20 of the air conditioner outdoor unit 100, that is, the outdoor air can directly enter the heat dissipation air duct 1501 to transfer the heat at the heat sink 13 through the outdoor air, thereby achieving heat dissipation and cooling at the heat sink 13.

[0121] The air conditioner outdoor unit 100 according to the embodiments of the present application includes the electric control box 10 as described above, and the electric control box 10 has a plurality of protection structures, which can prevent contaminants such as rainwater from polluting the electrical device 12, thereby improving the reliability and safety of the electric control box 10.

[0122] In some embodiments of the present application, the air conditioner outdoor unit 100 includes the shell assembly 20, and the shell assembly 20 has a cavity, and the cavity is provided with a partition plate 30, and the partition plate 30 divides the cavity and forms a fan cavity 201 and a compressor cavity 202 arranged in a horizontal direction. The fan cavity 201 can be used to arrange devices such as a fan and a heat exchanger, so as to drive the air in the fan cavity 201 to flow through the fan, thereby achieving air-cooled heat exchange of the heat exchanger, and the compressor cavity 202 is used to arrange devices such as a compressor and an electric control box 10.

[0123] Further, the communication hole 301 is formed at the partition plate 30, and the shell assembly 20 is provided with an air inlet structure 22 on the first side wall 21 of the compressor cavity 202, and the air outside the shell assembly 20 can enter the shell assembly 20 through the air inlet structure 22.

[0124] In combination with FIGS. 1-3, Figure 2 and Figure 3 As shown in the figures, the electric control box 10 is connected between the partition plate 30 and the first side plate, and the heat dissipation air duct 1501 of the electric control box 10 is in communication between the air inlet structure 22 and the communication hole 301, so that the air outside the air conditioner outdoor unit 100 can enter the heat dissipation air duct 1501 through the air inlet structure 22, and then be discharged to one side of the fan cavity 201 after flowing through the heat dissipation air duct 1501, thereby transferring the heat at the electric control box 10 to one side of the fan cavity 201.

[0125] It can be understood that when the fan in the fan cavity 201 operates, a negative pressure can be formed on one side of the fan cavity 201, air in the heat dissipation air duct 1501 can be discharged to one side of the fan cavity 201 through the communication hole 301, and air outside the fan of the air conditioner can be supplemented into the heat dissipation air duct 1501 through the air inlet structure 22, so that the air can flow through the heat dissipation air duct 1501 and transfer the heat at the radiator 13 to one side of the fan cavity 201, thereby cooling the electric control box 10.

[0126] With reference to Figure 2 The box assembly 15 further forms a heat exchange air duct 1502, the air inlet side of the heat exchange air duct 1502 is in communication with the compressor cavity 202, and the air outlet side of the heat exchange air duct 1502 can be in communication with one side of the fan cavity 201 through the communication hole 301. The air in the compressor cavity 202 can be discharged to the fan cavity 201 through the communication hole 301 after flowing through the heat exchange air duct 1502, so as to transfer the heat of the electrical device 12 arranged at the heat exchange air duct 1502 in the electric control box 10.

[0127] In the present application, the electric control box 10 can achieve heat dissipation and cooling through air cooling, and the heat dissipation air duct 1501 in the electric control box 10 can be communicated between the outside of the air conditioner outdoor unit 100 and the fan cavity 201, so that the air outside the air conditioner outdoor unit 100 can directly enter the heat dissipation air duct 1501, thereby ensuring the heat dissipation and cooling efficiency of the outdoor air at the radiator 13. At the same time, multiple protection structures are arranged at the cooperation position of the radiator 13 and the radiator support 14, which can effectively prevent rainwater and other pollutants from splashing onto the electrical device 12 arranged on the PCB 11 and corresponding to the radiator 13, thereby providing good protection for the electrical device 12 and improving the stability, reliability and safety of the electric control box 10 during operation, so that the air conditioner outdoor unit 100 can operate stably and reliably under harsh weather conditions (such as typhoon, rainy day, etc.).

[0128] In some embodiments of the present application, the shell assembly 20 further includes a panel 23, the panel 23 includes a first panel 231 and a second panel 232, the first panel 231 and the second panel 232 are arranged in sequence along a first direction and are connected. Wherein, the abutting position of the first panel 231 and the second panel 232 is connected and matched with the partition plate 30, that is, the first panel 231 is a component of the panel 23 corresponding to the fan cavity 201, and the second panel 232 is a component of the panel 23 corresponding to the compressor cavity 202, thereby facilitating the assembly of the shell assembly 20 and the partition plate 30, and facilitating the detection and maintenance of the devices in the fan cavity 201 and the compressor cavity 202.

[0129] It can be understood that when the electric control box 10 needs to be disassembled, only the second panel 232 needs to be disassembled, so that the compressor cavity 202 is opened on the side of the panel 23, and the electric control box 10 can be disassembled from the side of the panel 23 by the operator. Similarly, if the device (such as a fan, a heat exchanger, etc.) in the fan cavity 201 needs to be detected and maintained, the first panel 231 is disassembled, and the device in the fan cavity 201 can be fully exposed from the side of the panel 23, so as to facilitate the operator to operate.

[0130] According to the air conditioner provided in the embodiments of the present application, the air conditioner comprises the air conditioner outdoor unit 100.

[0131] The air conditioner provided in the embodiments of the present application has the same advantages as the air conditioner outdoor unit 100 compared with the prior art, and details are not repeated here.

[0132] In the description of the present application, "a first feature", "a second feature" can include one or more features.

[0133] In the description of the present application, "a plurality of" means two or more.

[0134] In the description of the present application, "above" or "below" of a first feature to a second feature can include that the first and second features are in direct contact, or can include that the first and second features are not in direct contact but are in contact through another feature between them.

[0135] In the description of the present application, "above", "over" and "on" of a first feature to a second feature include that the first feature is directly above and obliquely above the second feature, or only means that the first feature is higher than the second feature in height.

[0136] In the description of the present application, the description of the terms "one embodiment", "some embodiments", "exemplary embodiment", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present application, the exemplary description of the above terms does not necessarily mean the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0137] Although the embodiments of the present application have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and purposes of the present application, and the scope of the present application is defined by the claims and their equivalents.

Claims

1. An electric control box, characterized by, The application relates to a heat dissipation device for an electronic device. The heat dissipation device comprises: a PCB board and an electric device mounted on the PCB board; a heat dissipation device and a heat dissipation device support connected with the PCB board and used for mounting the heat dissipation device, the heat dissipation device being used for heat exchange with the electric device, the heat dissipation device support being provided with a shielding part on the circumferential outer side of the electric device in cooperation with the heat dissipation device, and the shielding part being used for shielding the electric device; 2. The electric control box according to claim 1, wherein a box assembly forming an open mounting cavity, the open end of the mounting cavity being provided with the PCB board, the box assembly and the PCB board cooperating to form a heat dissipation air duct, and the heat dissipation device being arranged in the heat dissipation air duct. The heat dissipation device support comprises a support main body provided with at least one connecting part used for connecting and cooperating with the heat dissipation device, and the shielding part is arranged along the circumferential direction of the support main body and is arranged on the circumferential outer side of the connecting part.

3. The electric control box according to claim 2, wherein The support main body is further provided with an avoiding part used for avoiding the electric device. The shielding part comprises: a first blocking rib arranged on the support main body and protruding away from the side surface of the support main body away from the PCB board; 4. The electric control box according to claim 3, wherein a second blocking rib arranged on the support main body and protruding away from the side surface of the support main body away from the PCB board, and the second blocking rib is arranged on the side of the first blocking rib away from the connecting part and the avoiding part and is spaced apart from the first blocking rib, and a first blocking groove is formed between the second blocking rib and the first blocking rib and opens to the side of the heat dissipation device.

5. The electric control box according to claim 3, wherein The first blocking rib surrounds the connecting part and the avoiding part, and the second blocking rib surrounds the first blocking rib. The heat dissipation device comprises: a heat dissipation base plate connected with the heat dissipation device support and used for heat exchange with the electric device; 6. The electric control box according to claim 5, wherein a heat dissipation fin connected to the side of the heat dissipation base plate away from the PCB board and extending away from the PCB board.

7. The electric control box according to claim 6, wherein The side surface of the heat dissipation base plate opposite to the heat dissipation device support is provided with a second blocking groove opening to the side of the PCB board, and at least part of the first blocking rib is inserted into the second blocking groove. The second blocking groove extends along the vertical direction.

8. The electrically controlled box according to claim 5, wherein, And / or, the cross section of the second blocking groove is arranged in an L shape or a U shape.

9. The electrically controlled box according to claim 3, wherein, The heat dissipation base plate is provided with a third blocking groove extending along the horizontal direction, and the third blocking groove is used for shielding the first blocking rib. The first blocking groove comprises: two first drainage sections extending along the horizontal direction, and the two first drainage sections are arranged above and below the connecting part and the avoiding part along the vertical direction, and the first drainage section located below is provided with a drainage port; 10. The electric control box according to claim 9, wherein a second drainage section extending along the vertical direction and being communicated between the two first drainage sections. The lower wall of the first drainage section located below the connecting part and the avoiding part extends downwardly to the side of the drainage port, and the included angle between the lower wall and the horizontal direction is alpha, and the relationship formula is 2 DEG < alpha < 10 DEG.

11. The electrically controlled box according to claim 3, wherein, The first blocking groove has a width L1, and satisfies the relationship: 2.5mm≤L1≤10mm; And / or, the first blocking groove has a groove depth L2, and satisfies the relationship: 3mm≤L2≤10mm.

12. The electrically controlled box according to claim 3, wherein, The box assembly comprises: A first baffle and a third baffle, which are oppositely arranged in a vertical direction; A second baffle and a fourth baffle, which are oppositely arranged and connected between the first baffle and the third baffle respectively, and the first baffle, the second baffle, the third baffle and the fourth baffle surround a heat dissipation air duct which is open to one side of the PCB.

13. The electric control box according to claim 12, wherein The fourth baffle comprises a baffle plate, and a first blocking strip protruding to the side of the PCB is arranged on the side surface of the baffle plate opposite to the PCB.

14. An air conditioner outdoor unit, characterized by comprising: The electric control box according to any one of claims 1-13.

15. An air conditioner characterized by comprising: The air conditioner outdoor unit according to claim 14.

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