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

Abstract

The utility model relates to the technical field of electric control heat dissipation, and discloses an electric control box body which comprises an electric control shell, an electric control containing cavity is defined by the electric control shell, the electric control shell comprises an electric control side shell part and an electric control bottom shell part, and the electric control shell is provided with a heat dissipation air inlet and a heat dissipation air outlet which are used for forming a heat dissipation air path; the circuit board is arranged in the electric control accommodating cavity; and the radiator is used for radiating heat of the circuit board and is arranged in the heat dissipation air path, and the heat dissipation air inlet path and / or the heat dissipation air outlet path are / is provided with a grating assembly at least comprising two layers of gratings. According to the electric control box body, the waterproof and insect-proof effects are improved while the heat dissipation air path is ensured to be unobstructed. The utility model further discloses the air conditioner outdoor unit and the air conditioner.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electric control heat dissipation, for example to an electric control box, an air conditioner outdoor unit and an air conditioner. BACKGROUND

[0002] The electric control box of the air conditioner outdoor unit is provided with a circuit board, and the circuit board is integrated with multiple power chips, so that when the air conditioner is running, especially in a high-temperature refrigeration mode, the heat flow of the circuit board is large and the heat is serious, and the circuit board needs to be cooled in time to ensure the normal and stable operation of the air conditioner.

[0003] The existing electric control box is usually provided with a heat sink under the circuit board, and a wind path is formed on the shell of the electric control box to cool the circuit board by air induction.

[0004] In the process of implementing the embodiments of the present disclosure, it is found that at least the following problems exist in the related art:

[0005] When the air inlet and the air outlet are formed on the electric control box to form a heat dissipation wind path, the waterproofness or insect resistance of the shell of the electric control box is insufficient, and the phenomenon of blocking the air inlet or the air outlet is likely to occur, which causes the heat dissipation wind path to be not smooth and reduces the heat dissipation effect of the electric control board.

[0006] It should be noted that the information disclosed in the above background section is only used to strengthen the understanding of the background of the present application, and therefore can include information that does not constitute prior art known to those of ordinary skill in the art. Content of the utility model

[0007] In order to have a basic understanding of some aspects of the disclosed embodiments, the following is a simple summary. The summary is not a general review, nor is it intended to determine the key / important elements or delineate the scope of protection of these embodiments, but as a prelude to the detailed description below.

[0008] The electric control box provided by the embodiments of the present disclosure comprises: an electric control shell which encloses an electric control containing cavity, the electric control shell comprising an electric control side shell part and an electric control bottom shell part, the electric control shell being provided with a heat dissipation air inlet and a heat dissipation air outlet for forming a heat dissipation wind path; a circuit board arranged in the electric control containing cavity; and a heat sink arranged in the heat dissipation wind path for cooling the circuit board, wherein the heat dissipation air inlet and / or the heat dissipation air outlet is provided with a grating assembly comprising at least a double-layer grating.

[0009] In some optional embodiments, the heat dissipation air inlet is arranged on the electric control bottom shell part; and / or the heat dissipation air outlet is arranged on the electric control side shell part.

[0010] In some optional embodiments, the heat dissipation air outlet is provided with a first grille assembly, the first grille assembly comprises a first column of grilles and a second column of grilles arranged at intervals, and a first grille gap is arranged between two adjacent grille bars of the first column of grilles, wherein a grille bar of the second column of grilles is arranged on one side of the first grille gap.

[0011] In some optional embodiments, the electric control side shell part comprises an electric control side shell body, and the first grille assembly is arranged on the electric control side shell body, wherein the first column of grilles is arranged on the electric control side shell body, and the second column of grilles protrudes from the electric control side shell body.

[0012] In some optional embodiments, the first grille gap has a first projection in a first direction, and a grille bar of the second column of grilles has a second projection in the first direction, wherein the first projection overlaps the second projection; or the second projection covers the first projection.

[0013] In some optional embodiments, a gap between the first column of grilles and the second column of grilles is less than or equal to 5 mm.

[0014] In some optional embodiments, the heat dissipation air inlet air passage is provided with a second grille assembly, the second grille assembly comprises a third column of grilles and a fourth column of grilles arranged at intervals, and a second grille gap is arranged between two adjacent grille bars of the third column of grilles, wherein a grille bar of the fourth column of grilles is arranged on one side of the second grille gap.

[0015] In some optional embodiments, the second grille gap has a third projection in a second direction, and a grille bar of the fourth column of grilles has a fourth projection in the second direction, wherein the third projection overlaps the fourth projection; or the fourth projection covers the third projection.

[0016] In some optional embodiments, a gap between the third column of grilles and the fourth column of grilles is less than or equal to 5 mm.

[0017] In some optional embodiments, the electric control side shell part comprises a first side shell part, a second side shell part and a third side shell part that enclose an air outlet cavity, and the first side shell part and the third side shell part are respectively arranged on two sides of the second side shell part, wherein the first grille assembly is arranged at least on the second side shell part.

[0018] In some optional embodiments, the second side shell part is arc-shaped or plate-shaped.

[0019] In some optional embodiments, the heat dissipation device comprises a first end and a second end, wherein the first grille assembly is arranged at the first end of the heat dissipation device, and the second grille assembly is arranged at the second end of the heat dissipation device.

[0020] In some optional embodiments, the distance from the first grid assembly to the first end of the heat sink is L1, where L1≥25mm; and / or, the distance from the second grid assembly to the second end of the heat sink is L2, where 10mm≤L2≤15mm; and / or, the heat dissipation air outlet comprises a heat dissipation side air outlet and a heat dissipation bottom air outlet which are in communication with each other, and the distance from the heat dissipation bottom air outlet to the first end of the heat sink is L3, where L3≥15mm.

[0021] In some embodiments, the air conditioner outdoor unit comprises the electric control box as described above.

[0022] In some embodiments, the air conditioner comprises the air conditioner outdoor unit as described above.

[0023] The electric control box, the air conditioner outdoor unit and the air conditioner provided by the embodiments of the present disclosure can achieve the following technical effects:

[0024] The electric control box provided by the embodiments of the present disclosure comprises an electric control shell, a circuit board and a heat sink. The electric control shell encloses an electric control accommodating cavity, and comprises an electric control side shell part and an electric control bottom shell part. The electric control shell is provided with a heat dissipation air inlet and a heat dissipation air outlet for forming a heat dissipation air path, and the circuit board is arranged in the electric control accommodating cavity. The heat sink is arranged in the heat dissipation air path for dissipating heat for the circuit board. The heat dissipation air inlet and / or the heat dissipation air outlet is provided with a grid assembly comprising at least double-layer grids.

[0025] The electric control box provided by the embodiments of the present disclosure is provided with a heat dissipation air path. The heat dissipation air inlet and the heat dissipation air outlet are arranged on the electric control shell, and the heat dissipation air inlet and / or the heat dissipation air outlet is provided with a grid assembly comprising at least double-layer grids.

[0026] In this way, while ensuring the heat dissipation effect of the heat dissipation air path on the electric control board, the grid assembly arranged in the heat dissipation air inlet and / or the heat dissipation air outlet comprises at least double-layer grids. The design of the double-layer grids improves the overall waterproof and insect-proof effect of the electric control box, and can form a buffer zone for air inlet or air outlet, thereby avoiding the problem of poor heat dissipation caused by the rebound of the heat air outlet of the heat sink.

[0027] The foregoing general description and the following description are only exemplary and explanatory, and are not used to limit the present application. BRIEF DESCRIPTION OF DRAWINGS

[0028] One or more embodiments are exemplarily illustrated by corresponding drawings, which do not constitute limitation on the embodiments, and elements with the same reference numerals in the drawings are shown as similar elements, the drawings do not constitute proportional limitation, and wherein:

[0029] Figure 1 is a structural schematic diagram of an electric control box provided by the embodiments of the present disclosure;

[0030] Figure 2 is an explosion schematic view of an electric control box provided by an embodiment of the present disclosure;

[0031] Figure 3 is a structural schematic view of a heat dissipation air outlet provided with a first grid assembly according to an embodiment of the present disclosure;

[0032] Figure 4 is a structural schematic view of a heat dissipation air outlet provided with a first grid assembly according to an embodiment of the present disclosure; Figure 3 is an enlarged view of a selected portion of

[0033] Figure 5 is a structural schematic view of a heat dissipation air outlet provided with a first grid assembly according to an embodiment of the present disclosure;

[0034] Figure 6 is a structural schematic view of a heat dissipation air outlet provided with a first grid assembly according to an embodiment of the present disclosure; Figure 5 is an enlarged view of a selected portion of

[0035] Figure 7 is a structural schematic view of a heat dissipation air outlet provided with a first grid assembly according to an embodiment of the present disclosure;

[0036] Figure 8 is a structural schematic view of a heat dissipation air outlet provided with a first grid assembly according to an embodiment of the present disclosure;

[0037] Figure 9 is a structural schematic view of a second grid assembly according to an embodiment of the present disclosure;

[0038] Figure 10 is a structural schematic view of a second grid assembly according to an embodiment of the present disclosure; Figure 9 is an enlarged view of a selected portion of

[0039] Figure 11 is a structural schematic view of a second grid assembly according to an embodiment of the present disclosure;

[0040] Figure 12 is a structural schematic view of an electric control box according to an embodiment of the present disclosure;

[0041] Figure 13 is a structural schematic view of an electric control box according to an embodiment of the present disclosure;

[0042] Figure 14 is a structural schematic view of an electric control box according to an embodiment of the present disclosure;

[0043] Figure 15 is a structural schematic view of an electric control box according to an embodiment of the present disclosure;

[0044] Figure 16 is a structural schematic view of an air conditioner outdoor unit according to an embodiment of the present disclosure;

[0045] Figure 17 is another structural schematic diagram of an electric control box provided by the embodiment of the present disclosure.

[0046] Figure 18 is another structural schematic diagram of an electric control box provided by the embodiment of the present disclosure.

[0047] Reference signs:

[0048] 100: electric control shell; 11: electric control side shell part; 12: electric control bottom shell part; 13: electric control box cover plate; 110: heat dissipation air outlet; 120: heat dissipation air inlet; 111: electric control side shell body; 112: side heat dissipation air outlet; 113: upper heat dissipation air outlet; 114: waterproof baffle; 1101: first side shell part; 1102: second side shell part;

[0049] 2: circuit board;

[0050] 31: first column of grids; 32: second column of grids; 313: first grid gap;

[0051] 41: third column of grids; 42: fourth column of grids; 413: second grid gap;

[0052] 5: heat sink; 51: air guide baffle;

[0053] 600: outdoor unit shell; 61: first air inlet; 62: second air inlet; 601: first side shell; 602: handle;

[0054] 7: partition plate;

[0055] 8: fan;

[0056] 9: compressor. DETAILED DESCRIPTION

[0057] In order to enable a person skilled in the art to more fully understand the features and technical contents of the embodiments of the present disclosure, the implementation of the embodiments of the present disclosure will be described in detail below in conjunction with the accompanying drawings, which are only used for reference and do not limit the embodiments of the present disclosure. In the following technical description, in order to facilitate explanation, through multiple details, a sufficient understanding of the disclosed embodiments is provided. However, one or more embodiments can still be implemented without these details. In other cases, in order to simplify the drawings, well-known structures and devices can be simplified.

[0058] The terms "first", "second", and the like in the description and in the claims of the embodiments of the present disclosure and the above-described drawings are used to distinguish similar objects, and do not necessarily indicate a specific order or sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so as to describe the embodiments of the present disclosure herein. In addition, the terms "comprise" and "have" and any variations thereof are intended to cover non-exclusive inclusion.

[0059] In the embodiments of the present disclosure, the terms "upper", "lower", "inner", "middle", "outer", "front", "back", and the like indicate the orientation or positional relationship shown in the drawings. These terms are mainly used to better describe the embodiments of the present disclosure and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation. In addition, in addition to indicating the orientation or positional relationship, the above-mentioned part of the terms can also be used to indicate other meanings, for example, the term "upper" can also be used to indicate a certain dependent relationship or connection relationship in some cases. For those skilled in the art, the specific meanings of these terms in the embodiments of the present disclosure can be understood according to the specific circumstances.

[0060] In addition, the terms "set", "connected", "fixed" should be broadly understood. For example, "connected" can be fixedly connected, detachably connected, or integrally configured; can be mechanically connected, or electrically connected; can be directly connected, or indirectly connected through an intermediate medium, or internal communication between two devices, elements or components. For those skilled in the art, the specific meanings of the above terms in the embodiments of the present disclosure can be understood according to the specific circumstances.

[0061] Unless otherwise specified, the term "a plurality of" means two or more.

[0062] In the embodiments of the present disclosure, the character " / " represents an "or" relationship between the objects before and after it. For example, A / B represents: A or B.

[0063] The term "and / or" is a description of the association between objects, which means that there can be three relationships. For example, A and / or B, which means: A or B, or, A and B, three relationships.

[0064] It should be noted that the embodiments in the embodiments of the present disclosure and the features in the embodiments can be combined with each other without conflict.

[0065] The embodiments of the present disclosure provide an electric control box.

[0066] The electric control box provided by the embodiments of the present disclosure comprises an electric control shell 100, a circuit board 2 and a radiator 5. The electric control shell 100 encloses an electric control accommodating cavity, the electric control shell 100 comprises an electric control side shell part 11 and an electric control bottom shell part 12, and the electric control shell 100 is provided with a heat dissipation air inlet 120 and a heat dissipation air outlet 110 for forming a heat dissipation air path. The circuit board 2 is arranged in the electric control accommodating cavity. The radiator 5 is arranged in the heat dissipation air path and is used for dissipating heat for the circuit board 2. The heat dissipation air inlet and / or the heat dissipation air outlet is provided with a grid assembly comprising at least double-layer grids.

[0067] The circuit board 2 arranged in the electric control box is provided with IPM, IGBT, diode, rectifier bridge and other heat generating devices, and the radiator 5 can dissipate heat for these high-power heat generating components.

[0068] The embodiments of the present disclosure provide a semi-closed electric control box, the radiator 5 is arranged in the heat dissipation air path, and the heat dissipation air inlet 120 and the heat dissipation air outlet 110 are arranged on both sides of the radiator 5. The fan 8 of the air conditioner outdoor unit rotates to generate negative pressure, thereby introducing external normal-temperature air into the electric control box to dissipate heat for the circuit board 2 in the electric control box.

[0069] The heat dissipation air inlet 120 and the heat dissipation air outlet 110 are arranged on the electric control shell 100 of the electric control box to form a heat dissipation air path in the electric control box. When the electric control box is installed on the air conditioner outdoor unit, the normal-temperature air outside the air conditioner outdoor unit can be introduced into the heat dissipation air path in the electric control box, so that the normal-temperature air exchanges heat with the radiator 5, and the hot air formed after the exchange is blown out from the heat dissipation air outlet 110, thereby improving the heat dissipation effect of the circuit board 2 in the electric control box.

[0070] Meanwhile, the electric control box provided by the embodiments of the present disclosure is provided with a grid assembly comprising at least double-layer grids in the heat dissipation air inlet path and / or the heat dissipation air outlet path. The grid assembly improves the buffering effect of the air inlet or the air outlet, avoids the problem of poor heat dissipation caused by the hot air rebound at the heat dissipation air outlet 110, and improves the waterproof and insect-proof effect of the electric control box.

[0071] Optionally, the shape of the grid in the grid assembly can be a long strip shape, a hollow circular shape or other irregular shapes. Optionally, in the grid assembly of the double-layer grids, the two grids are arranged alternately, the grid comprises a grid framework and a grid gap arranged between the grid frameworks, and the grid framework of one grid is arranged at the grid gap of the other grid in the grid assembly of the double-layer grids. In this way, the air passing through the grid assembly is redirected, the waterproof and insect-proof effect of the electric control box is improved, and the problem of poor heat dissipation caused by the hot air rebound is avoided.

[0072] It can be understood that the heat dissipation air inlet air path is the air path between the heat dissipation air inlet 120 and the heat sink 5 in the heat dissipation air path, and it can be understood that the heat dissipation air inlet air path includes the heat dissipation air inlet 120.

[0073] It can be understood that the heat dissipation air outlet air path is the air path between the heat dissipation air outlet 110 and the heat sink 5 in the heat dissipation air path, and it can be understood that the heat dissipation air outlet air path includes the heat dissipation air outlet 110.

[0074] Optionally, the heat dissipation air inlet 120 is arranged on the electric control bottom shell part 12, and / or the heat dissipation air outlet 110 is arranged on the electric control side shell part 11.

[0075] In the embodiment of the present disclosure, the heat dissipation air inlet 120 is arranged on the electric control bottom shell part 12, and the heat dissipation air outlet 110 is arranged on the electric control side shell part 11. Optionally, the heat dissipation air inlet 120 is a strip-shaped opening, or the number of heat dissipation air inlets 120 is one or more; optionally, the number of heat dissipation air outlets 110 can also be multiple, so as to form multiple air outlets of side air outlet, bottom air outlet and / or top air outlet, thereby improving the heat dissipation effect on the circuit board 2.

[0076] Optionally, the heat dissipation air outlet 110 is provided with a first grille assembly, and the first grille assembly includes a first column of grilles 31 and a second column of grilles 32 arranged at intervals, and a first grille gap 313 is arranged between two adjacent grille strips 311 and 312 of the first column of grilles 31, wherein a grille strip of the second column of grilles 32 is arranged on one side of the first grille gap 313. Figure 5 and Figure 6 as shown.

[0077] The first grille assembly includes the first column of grilles 31 and the second column of grilles 32, and the first column of grilles 31 and the second column of grilles 32 are arranged at intervals and staggered, and the grille strip of the second column of grilles 32 is arranged in the grille gap of the first column of grilles 31. In this way, when the hot air after heat exchange with the heat sink 5 flows out through the first grille assembly, it first passes through the gap of the first column of grilles 31, changes direction, and then flows out from the gap of the second column of grilles 32, thereby avoiding the problem of poor heat dissipation caused by the formation of hot air rebound at the heat dissipation air outlet 110. At the same time, the second column of grilles 32 forms a shielding effect on the gap of the first column of grilles 31, thereby improving the waterproof and insect-proof effect of the electric control box.

[0078] Optionally, the shape of the grille strip in the first column of grilles 31 and the second column of grilles 32 can be a horizontal straight strip, as shown in Figures 1 to 7 The shape of the grille strip can also be a vertical straight strip, or the shape of the grille strip can also be an arc-shaped grille strip.

[0079] Optionally, the grid bars of the second column of grids 32 are arranged at one side of the first grid gap 313, which can be understood as that the grid bars of the second column of grids 32 are arranged at the front side or the rear side of the first grid gap 313, so that the grid bars of the second column of grids 32 form an occlusion to the first grid gap 313.

[0080] Optionally, the electric control side shell 11 comprises an electric control side shell body 111, and the first grid assembly is arranged on the electric control side shell body 111, wherein the first column of grids 31 is arranged along the shape of the electric control side shell body 111, and the second column of grids 32 is arranged protruding from the electric control side shell body 111. Figure 7 As shown in the drawings.

[0081] The first column of grids 31 is arranged along the shape of the electric control side shell body 111, and the second column of grids 32 is arranged protruding from the electric control side shell body 111, so that a gap is formed between the first column of grids 31 and the second column of grids 32. Figure 3 and Figure 7 As shown in the drawings. In this way, the setting stability of the first grid assembly is improved.

[0082] Optionally, the first grid gap 313 is projected in a first direction to obtain a first projection, and the grid bars of the second column of grids 32 are projected in the first direction to obtain a second projection, wherein the first projection overlaps the second projection; or the second projection covers the first projection.

[0083] Optionally, the first direction can be a horizontal direction. The first projection overlaps the second projection, so that the grid bars of the second column of grids 32 are arranged completely at the first grid gap 313, and when viewed from the first direction, an occlusion plate with complete occlusion and no gap is obtained. Figure 8 As shown in the drawings, the waterproof and insect-proof effect of the electric control box is improved. Optionally, the second projection covers the first projection, which can be understood as that the grid bars of the second column of grids 32 are slightly larger than the first grid gap 313, so that the occlusion effect of the second column of grids 32 to the first grid gap 313 is improved, and the waterproof and insect-proof effect of the electric control box is improved.

[0084] Optionally, the gap between the first column of grids 31 and the second column of grids 32 is less than or equal to 5 mm.

[0085] Optionally, the gap D1 between the first column of grids 31 and the second column of grids 32 is less than or equal to 5 mm, or D1 is less than or equal to 4 mm, or D1 is less than or equal to 3 mm, so that the outflow of the heat dissipation air path is ensured to be smooth, and the waterproof and insect-proof effect of the electric control box is improved. Figure 4 As shown in the drawings.

[0086] Optionally, the heat dissipation air inlet air channel is provided with a second grid assembly, the second grid assembly comprises a third column of grids 41 and a fourth column of grids 42, and a second grid gap 413 is arranged between two adjacent grid bars 411 and 412 of the third column of grids 41, wherein the grid bars of the fourth column of grids 42 are arranged on one side of the second grid gap 413. Figures 9 to 11

[0087] The second grid assembly comprises the third column of grids 41 and the fourth column of grids 42, and the third column of grids 41 and the fourth column of grids 42 are arranged in an alternating manner, and the grid bars of the fourth column of grids 42 are arranged in the grid gaps of the third column of grids 41. In this way, the air entering from the heat dissipation air inlet 120 first passes through the gaps of the third column of grids 41, changes direction, and then flows out from the gaps of the fourth column of grids 42. The fourth column of grids 42 forms a shielding effect on the gaps of the third column of grids 41, thereby improving the waterproof and insect-proof effect of the electric control box.

[0088] Optionally, the shapes of the grid bars in the third column of grids 41 and the fourth column of grids 42 can be horizontal straight bars, as shown in Figures 9 to 11

[0089] Optionally, the grid bars of the fourth column of grids 42 are arranged on one side of the second grid gap 413, which can be understood as that the grid bars of the fourth column of grids 42 are arranged on the front side or the rear side of the second grid gap 413, so that the grid bars of the fourth column of grids 42 form a shielding effect on the second grid gap 413.

[0090] Optionally, the second grid gap 413 is projected in a third projection in a second direction, and the grid bars of the fourth column of grids 42 are projected in a fourth projection in the second direction, wherein the third projection and the fourth projection overlap each other; or the fourth projection covers the third projection.

[0091] Optionally, the second direction can be a horizontal direction. The third projection and the fourth projection overlap each other, so that the grid bars of the fourth column of grids 42 are arranged completely at the second grid gap 413, and when viewed from the second direction, an occlusion plate with complete occlusion and no gap is obtained, thereby improving the waterproof and insect-proof effect of the electric control box. Optionally, the fourth projection covers the third projection, which can be understood as that the grid bars of the fourth column of grids 42 are slightly larger than the second grid gap 413, thereby improving the shielding effect of the fourth column of grids 42 on the second grid gap 413 and improving the waterproof and insect-proof effect of the electric control box.

[0092] Optionally, the gap between the third column of grids 41 and the fourth column of grids 42 is less than or equal to 5 mm.

[0093] ​​Optionally, the gap D2 between the third column of grids 41 and the fourth column of grids 42 is less than or equal to 5 mm, or D2 is less than or equal to 4 mm, or D2 is less than or equal to 3 mm, which ensures the smoothness of the air inlet of the heat dissipation air path while improving the waterproof and insect-proof effect of the electric control box.

[0094] Optionally, the electric control side shell part 11 includes a first side shell part 1101, a second side shell part 1102, and a third side shell part that enclose an air outlet cavity, and the first side shell part 1101 and the third side shell part are respectively arranged on both sides of the second side shell part 1102, wherein the first grid assembly is arranged at least on the second side shell part 1102. The second side shell part 1102 is arc-shaped or plate-shaped. As shown in Figure 12 and Figure 13 .

[0095] The first side shell part 1101, the second side shell part 1102, and the third side shell part substantially form a U shape, wherein the second side shell part 1102 can be understood as a side shell part arranged on the upper side of the heat dissipation air duct, and the second side shell part 1102 can be arc-shaped or straight plate-shaped.

[0096] Optionally, the heat sink 5 includes a first end and a second end, wherein the first grid assembly is arranged at the first end of the heat sink 5, and the second grid assembly is arranged at the second end of the heat sink 5.

[0097] The first end is the heat dissipation air outlet end of the heat sink 5, and the second end is the heat dissipation air inlet end of the heat sink 5. The first grid assembly is arranged at the first end of the heat sink 5, and the second grid assembly is arranged at the second end of the heat sink 5. In this way, the heat dissipation air inlet end and the heat dissipation air outlet end of the heat sink 5 are both provided with a grid assembly including at least double-layer grids, which improves the waterproof and insect-proof effect of the two ends of the heat sink 5 and avoids the problem of hot air backflow.

[0098] Optionally, the distance from the first grid assembly to the first end of the heat sink 5 is L1, wherein L1≥25 mm. As shown in Figure 14 . In this way, a buffer space is formed between the first end of the heat sink 5 and the first grid assembly, so that the heat dissipation air outlet end of the heat sink 5 can smoothly exhaust air after a certain buffer, and when water enters, it can flow out from the bottom outlet of the second side shell part 1102. Optionally, L1 can be 25 mm, 27 mm, 30 mm, 32 mm, 35 mm, 40 mm, etc. Specifically, it can be set according to the size of the heat sink 5 or the size of the reserved space in the air conditioner outdoor unit.

[0099] It can be understood that Figure 14 the position shown by the dashed box in FIG. 10 is the position of the heat sink 5.

[0100] Optionally, the distance from the second grid assembly to the second end of the heat sink 5 is L2, wherein 10mm≤L2≤15mm. The second end is the heat dissipation air inlet end of the heat sink 5. In the embodiment of the present disclosure, after ensuring that the air inlet is fully mixed before entering the heat sink 5, the problem of air path obstruction caused by the second grid assembly being too close to the second end of the heat sink 5 is prevented. Optionally, L2 can be 10mm, 12mm, 15mm, etc.

[0101] Optionally, the heat dissipation air outlet 110 includes a heat dissipation side air outlet and a heat dissipation bottom air outlet that are in communication with each other, and the distance from the heat dissipation bottom air outlet to the first end of the heat sink 5 is L3, wherein L3≥15mm. As shown in Figure 14 .

[0102] If the distance from the heat dissipation bottom air outlet to the first end of the heat sink 5 is too small, the resistance will be too large, and if it is too large, the wind speed in this part will be small, and the air guiding effect will not be obvious. In the embodiment of the present disclosure, L3≥15mm, which ensures that the air from the heat dissipation bottom air outlet can be smoothly sucked away by the fan. Optionally, L3 can be 15mm, 17mm, 20mm, 25mm, etc.

[0103] Optionally, the extension distance L4 of the air guiding baffle 51 at the bottom of the heat sink 5 is the same as the length of the heat sink 5. As shown in Figure 14 . The air guiding baffle 51 at the bottom of the heat sink 5 can guide the cold air to effectively perform forced convection air cooling heat exchange along the fin direction of the heat sink 5. If there is no air guiding baffle 51, the air will bypass the gap of the heat sink 5 and be directly sucked away by the fan from below the fin with smaller resistance, and the heat dissipation of the fin of the heat sink 5 cannot be effectively performed. In the embodiment of the present disclosure, the extension distance L4 of the air guiding baffle 51 at the bottom of the heat sink 5 is the same as the length of the heat sink 5, which improves the heat dissipation effect of the heat sink 5.

[0104] The embodiment of the present disclosure also provides an air conditioner outdoor unit. The air conditioner outdoor unit provided by the embodiment of the present disclosure includes the electric control box body as described above.

[0105] Optionally, the air conditioner outdoor unit comprises an outdoor unit shell 600, a partition plate 7, a compressor 9, a fan 8, and an electric control box. The outdoor unit shell 600 encloses an internal cavity; the partition plate 7 divides the internal cavity into a compressor cavity and a fan 8 cavity, and the outdoor unit shell 600 comprises a first side shell 601 enclosing the compressor cavity; the compressor 9 is arranged in the compressor cavity; the fan 8 is arranged in the fan 8 cavity; the electric control box is arranged on the top of the partition plate 7 and internally arranged with a circuit board 2, and the electric control box comprises an electric control shell 100 enclosing an electric control cavity, the electric control shell 100 comprises an electric control side shell 11 and an electric control bottom shell 12, the electric control shell 100 is provided with a heat dissipation air inlet 120 and a heat dissipation air outlet 110 for forming a heat dissipation air path, and the heat dissipation air inlet 120 is arranged on the part of the electric control bottom shell 12 located in the compressor cavity, and the heat dissipation air outlet 110 is arranged on the part of the electric control side shell 11 located in the fan 8 cavity. The first side shell 601 of the outdoor unit shell 600 is provided with a first air inlet 61 located at the upper part and a second air inlet 62 located at the lower part.

[0106] The effect of using side-induced normal temperature wind to dissipate heat from the circuit board 2 in the electric control box is good: first, the width of the heat sink 5 is large, the number of fins that can be arranged is large, the heat dissipation area is large, the windward area is large, and the width of the fin is small, which reduces the wind resistance; second, the inlet temperature of the heat sink 5 is relatively low, generally close to the ambient temperature or 4-6℃ higher than the ambient temperature, and the inlet temperature of the heat sink 5 is lower than the wind temperature increased by 10-12℃ after passing through the condenser, so the heat dissipation performance is better. Third, the side-induced wind passes through a wind channel, which not only dissipates heat from the capacitors, inductors, IPM and other components of the circuit board 2, but also dissipates heat from the fins of the frequency conversion heat sink 5.

[0107] The present disclosure provides an air conditioner outdoor unit with a heat dissipation air path opened on an electric control box. The installation environment of the air conditioner outdoor unit is complex, and the air inlet may be blocked by plant growth or insects, dust, spider webs and the like, causing the outdoor unit to fail to dissipate heat by side-induced normal temperature wind. The first side shell 601 of the outdoor unit shell 600 is provided with a first air inlet 61 and a second air inlet 62 arranged in an upper and lower manner, providing a double air inlet solution. When one of the two air inlets is blocked by foreign matter, affecting the air induction effect, the other air inlet can smoothly induce air outside the outdoor unit shell 600, ensuring the heat dissipation effect of the circuit board 2 in the electric control box. As shown in Figure 16 .

[0108] Optionally, the first air inlet 61 and / or the second air inlet 62 is provided with a louvered air inlet grille.

[0109] Optionally, the electric control box can be placed horizontally or inclined to adapt to different air inlet angles.

[0110] Optionally, the first air inlet 61 is arranged at a height higher than the compressor 9.

[0111] When the air passes through the compressor 9, the air is heated by the compressor 9 and the temperature of the air is increased by 5℃ or even more. In the air conditioner outdoor unit provided by the embodiment of the present disclosure, the first air inlet 61 of the first side shell 601 is arranged at a height higher than the compressor 9, so that the air entering from the first air inlet 61 can directly reach the electric control box without being heated by the compressor 9, thereby reducing the temperature of the air entering the electric control box for heat dissipation and improving the heat dissipation effect on the circuit board 2 in the electric control box. Optionally, the first air inlet 61 is arranged at the handle 602 of the air conditioner outdoor unit.

[0112] Optionally, a first air guide duct is arranged between the first air inlet 61 and the air inlet of the heat dissipation air duct, so as to guide the external air from the first air inlet 61 into the heat dissipation air duct along the first air guide duct; and / or a second air guide duct is arranged between the second air inlet 62 and the air inlet of the heat dissipation air duct, so as to guide the external air from the second air inlet 62 into the heat dissipation air duct along the second air guide duct.

[0113] The arrangement of the first air guide duct and the second air guide duct can directly guide the air of the first air inlet 61 or the second air inlet 62 into the heat dissipation air duct, thereby avoiding the heating effect of the heat of the compressor 9 on the air during the air guiding process, and improving the heat dissipation effect on the circuit board 2 in the electric control box.

[0114] Optionally, the first air guide duct and / or the second air guide duct are tubular and plastic.

[0115] Optionally, the electric control side shell 11 comprises an air outlet cavity, wherein the air outlet cavity is provided with an upper heat dissipation air outlet 113, a lower heat dissipation air outlet and / or a side heat dissipation air outlet 112.

[0116] The heat dissipation air outlet end of the heat dissipation device 5 is provided with an air outlet cavity, and the air outlet cavity is provided with an upper heat dissipation air outlet 113 for upward air outlet, a lower heat dissipation air outlet for downward air outlet and / or a side heat dissipation air outlet 112 for side air outlet. The arrangement of the plurality of heat dissipation air outlets improves the heat dissipation effect on the electric control board. The high-speed air directly formed in the axial direction by the fan 8 quickly removes the low-speed high-temperature air from the electric control box, forming a narrow pipe effect. The high-speed air quickly removes the low-speed hot air after passing through the electric control box, avoiding heat accumulation and strengthening the heat dissipation of the electric control box.

[0117] Through fluid simulation test, the air speed of the lower heat dissipation air outlet is greater than the air speed of the upper heat dissipation air outlet 113, and the air speed of the upper heat dissipation air outlet 113 is greater than the air speed of the side heat dissipation air outlet 112.

[0118] Optionally, the electric control side shell 11 comprises a first side shell 1101, a second side shell 1102 and a third side shell which enclose an air outlet cavity, and the first side shell 1101 and the third side shell are respectively arranged on two sides of the second side shell 1102, wherein the second side shell 1102 is provided with a waterproof baffle 114.

[0119] Optionally, the horizontal distance between the waterproof baffle 114 and the first end of the heat sink 5 is 10-40 mm, which ensures smooth air outlet and improves waterproof and insect prevention effects. Optionally, the waterproof baffle 114 is arc-shaped or straight-plate-shaped.

[0120] Similarly, the air inlet end of the heat sink 5 is also provided with a waterproof baffle 114. Optionally, the horizontal distance between the waterproof baffle 114 arranged at the air inlet end and the air inlet end of the heat sink 5 is 10-30 mm, which ensures smooth air inlet.

[0121] Optionally, the waterproof baffle 114 is provided with louvers, and the louvers are inclined upward. Optionally, the angle between the louvers and the horizontal direction is a, and 40°<a<50°, which can balance air outlet and waterproof effects. Figure 17

[0122] Optionally, the waterproof baffle 114 is not provided with an air outlet, which improves waterproof and insect prevention effects. Figure 18

[0123] Optionally, the height of the waterproof baffle 114 is h1, and the total height of the electric control box is H, wherein 0.5≤h1 / H≤0.8. Figure 18

[0124] Optionally, the electric control box is internally provided with a waterproof and insect prevention ventilation plate, and the waterproof and insect prevention ventilation plate is provided with longitudinal holes, longitudinal louvers or a plurality of circular holes arranged in an array. Optionally, the inner diameter of the circular hole is 2 mm, 3 mm or 4 mm.

[0125] The disclosure also provides an air conditioner, which comprises the air conditioner outdoor unit as described above.

[0126] The above description and drawings sufficiently illustrate the embodiments of the disclosure to enable a person skilled in the art to practice them. Other embodiments can include structural and other changes. The embodiments only represent possible changes. Unless explicitly required, individual components and functions are optional, and the order of operations can be changed. Some embodiments can include or replace parts and features of other embodiments. The embodiments of the disclosure are not limited to the structures described above and shown in the drawings, and can be variously modified and changed without departing from the scope thereof. The scope of the disclosure is only limited by the appended claims.​​​

Claims

1. An electric control box characterized by comprising: The electric control box comprises: an electric control shell enclosing an electric control accommodating cavity, the electric control shell comprising an electric control side shell part and an electric control bottom shell part, the electric control shell being provided with a heat dissipation air inlet and a heat dissipation air outlet for forming a heat dissipation air path; a circuit board arranged in the electric control accommodating cavity; a heat sink arranged in the heat dissipation air path for dissipating heat for the circuit board, wherein the heat dissipation air inlet and / or the heat dissipation air outlet is provided with a grid assembly comprising at least double-layer grids.

2. The electric control box according to claim 1, wherein: the heat dissipation air inlet is arranged on the electric control bottom shell part; and / or the heat dissipation air outlet is arranged on the electric control side shell part.

3. The electric control box according to claim 1, wherein: the heat dissipation air outlet is provided with a first grid assembly, the first grid assembly comprising a first column of grids and a second column of grids arranged in an interval, and a first grid gap is arranged between two adjacent grid strips of the first column of grids, wherein a grid strip of the second column of grids is arranged on one side of the first grid gap.

4. The electric control box according to claim 3, wherein: the electric control side shell part comprises an electric control side shell body, and the first grid assembly is arranged on the electric control side shell body, wherein the first column of grids is arranged on the electric control side shell body, and the second column of grids is arranged on the electric control side shell body.

5. The electric control box according to claim 3, wherein: a first projection of the first grid gap is obtained in a first direction, and a second projection of the grid strip of the second column of grids is obtained in the first direction, and the first projection overlaps the second projection; or the second projection covers the first projection.

6. The electric control box according to claim 3, wherein: a gap between the first column of grids and the second column of grids is less than or equal to 5 mm.

7. The electric control box according to claim 1, wherein: the heat dissipation air inlet is provided with a second grid assembly, the second grid assembly comprising a third column of grids and a fourth column of grids arranged in an interval, and a second grid gap is arranged between two adjacent grid strips of the third column of grids, wherein a grid strip of the fourth column of grids is arranged on one side of the second grid gap.

8. The electric control box according to claim 7, wherein: a third projection of the second grid gap is obtained in a second direction, and a fourth projection of the grid strip of the fourth column of grids is obtained in the second direction, and the third projection overlaps the fourth projection; or the fourth projection covers the third projection.

9. The electric control box according to claim 7, wherein: a gap between the third column of grids and the fourth column of grids is less than or equal to 5 mm.

10. The electric control box according to claim 3, wherein: the electric control side shell part comprises a first side shell part, a second side shell part and a third side shell part enclosing an air outlet cavity, and the first side shell part and the third side shell part are arranged on two sides of the second side shell part, respectively, wherein the first grid assembly is arranged on at least the second side shell part.

11. The electric control box according to claim 10, wherein: the second side shell part is arc-shaped or plate-shaped.

12. The electric control box according to any one of claims 1 to 11, wherein: the heat sink comprises a first end and a second end, The first grating assembly is arranged at a first end of the heat sink, and the second grating assembly is arranged at a second end of the heat sink.

13. The electric control box according to claim 12, characterized in that, a distance from the first grating assembly to the first end of the heat sink is L1, wherein L1≥25mm; and / or, a distance from the second grating assembly to the second end of the heat sink is L2, wherein 10mm≤L2≤15mm; and / or, the heat dissipation air outlet comprises a heat dissipation side air outlet and a heat dissipation bottom air outlet which are in communication with each other, and a distance from the heat dissipation bottom air outlet to the first end of the heat sink is L3, wherein L3≥15mm.

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

15. An air conditioner characterized by comprising: An air conditioner outdoor unit comprising the electric control box according to claim 14.

Images