Electric control box assembly and air conditioner

Abstract

The utility model discloses a kind of electric control box assembly and air conditioner, electric control box assembly includes: electric control box body, electric control box body has heat dissipation port;Circuit board assembly, circuit board assembly is located in electric control box body, and is connected with electric control box body, circuit board assembly includes circuit board body and first electric appliance element, first electric appliance element is located in the thickness direction of circuit board body one side and is connected with circuit board body;Radiator, radiator is connected with at least one of circuit board body and electric control box body, and is heat-conducting connection with first electric appliance element, for the heat dissipation of first electric appliance element, radiator is opposite with heat dissipation port or is set in heat dissipation port inside.According to the electric control box assembly of the utility model, so that radiator can be exposed to outside air, to improve the heat dissipation efficiency of radiator, improve the heat dissipation effect.

Description

Technical Field

[0001] This utility model relates to the field of air handling equipment technology, and in particular to an electrical control box assembly and an air conditioner. Background Technology

[0002] Currently, the heat sink and circuit board of the electronic control unit are both placed inside the electronic control box. When dissipating heat, the heat exists in the closed space of the electronic control box. Most of the heat emitted by the circuit board can only be conducted away through the side wall of the electronic control box, resulting in poor heat dissipation. Utility Model Content

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes an electrical control box assembly that can be exposed to the outside air, thereby improving the heat dissipation efficiency and effect of the radiator.

[0004] This utility model also proposes an air conditioner, including the above-mentioned electrical control box assembly.

[0005] An electrical control box assembly according to an embodiment of the present invention includes: an electrical control box body having a heat dissipation vent; a circuit board assembly located within and connected to the electrical control box body, the circuit board assembly including a circuit board body and a first electrical component, the first electrical component being disposed on one side of the circuit board body in the thickness direction and connected to the circuit board body; and a heat sink connected to at least one of the circuit board body and the electrical control box body, and thermally connected to the first electrical component for dissipating heat from the first electrical component, the heat sink being opposite to or passing through the heat dissipation vent.

[0006] According to an embodiment of the present invention, the electrical control box assembly has a heat dissipation vent in the electrical control box body; the circuit board assembly is located inside the electrical control box body and connected to the electrical control box body, the circuit board assembly includes a circuit board body and a first electrical component, the first electrical component is disposed on one side of the circuit board body in the thickness direction and connected to the circuit board body; a heat sink is connected to at least one of the circuit board body and the electrical control box body, and is thermally connected to the first electrical component for dissipating heat from the first electrical component, the heat sink is opposite to or passes through the heat dissipation vent, so that the heat sink can be exposed to the outside air, thereby improving the heat dissipation efficiency and heat dissipation effect of the heat sink.

[0007] In some embodiments of this utility model, the circuit board assembly further includes a second electrical component, the heat generated by the second electrical component is less than that generated by the first electrical component, and the second electrical component and the first electrical component are disposed on the same side or opposite sides in the thickness direction of the circuit board body.

[0008] In some embodiments of this utility model, the heat sink is connected to the circuit board body by fasteners, and the first electrical component is located between the heat sink and the circuit board body.

[0009] In some embodiments of this utility model, the electrical control box assembly further includes: a first heat dissipation bracket, which is located between the heat sink and the circuit board body and is used to support the heat sink.

[0010] In some embodiments of this utility model, the first heat dissipation bracket includes: a first plate, a second plate, and a third plate. The first plate and the second plate are respectively connected to both ends of the third plate along its length. The first plate and the second plate are both disposed on the side of the third plate away from the circuit board body. The third plate, the circuit board body, and the heat sink are connected. A portion of the heat sink is disposed between the first plate and the second plate. At least a portion of the first electrical component is disposed on the side of the third plate away from the circuit board body. Both ends of the first electrical component along the width direction of the third plate are connected to the circuit board body.

[0011] In some embodiments of this utility model, the first heat dissipation bracket has a limiting groove, and the heat sink has a limiting protrusion, the limiting protrusion being adapted to be disposed in the limiting groove.

[0012] In some embodiments of this utility model, the first heat dissipation bracket includes: a first frame, the first frame being connected to the circuit board body, the first frame having an installation space extending through the first frame along the thickness direction of the circuit board body, the first electrical component being disposed in the installation space, the heat sink being disposed on the side of the first frame away from the circuit board body and abutting against the first frame, and each of the opposite ends of the side of the first frame away from the circuit board body having a limiting groove, and the two ends of the limiting protrusion along the length direction being respectively disposed in the two limiting grooves.

[0013] In some embodiments of this utility model, the first heat dissipation bracket further includes: a connecting plate, the connecting plate being connected to the side of the first frame facing the circuit board body, the two ends of the connecting plate in the length direction being respectively connected to opposite sides of the first frame, and the first electrical component being disposed between the connecting plate and the heat sink.

[0014] In some embodiments of this utility model, the first heat dissipation bracket includes: a second frame, the second frame being connected to the circuit board body, the second frame having an installation space extending through the second frame along the thickness direction of the circuit board body, a portion of the heat sink being disposed within the installation space, the heat sink being directly connected to the circuit board body, and each of the opposite ends of the side of the second frame away from the circuit board body having a limiting groove, the two ends of the limiting protrusion along the length direction being respectively disposed in the two limiting grooves, and the first electrical component being disposed between the bottom wall of the limiting groove and the circuit board body.

[0015] In some embodiments of this utility model, the electrical control box assembly further includes: a second heat dissipation bracket, which is sleeved on the heat sink, with one axial end of the second heat dissipation bracket located inside the electrical control box body, and the other axial end of the second heat dissipation bracket surrounding the heat dissipation port and connected to the electrical control box body.

[0016] In some embodiments of this utility model, the cross-sectional area of ​​the second heat dissipation bracket gradually increases from the end connected to the heat sink in the axial direction to the end connected to the electrical control box body.

[0017] In some embodiments of this utility model, the heat sink is connected to the electrical control box body, and the outer peripheral wall of the heat sink facing the circuit board body has an annular protrusion, which is located inside the electrical control box body and connected to the electrical control box body.

[0018] In some embodiments of this utility model, the electrical control box body includes a box body and a box cover. One side of the box body is open to form an opening. The circuit board assembly is disposed inside the box body. The box cover is disposed on the opening to seal the opening. The heat dissipation vent is disposed on the box body or the box cover.

[0019] In some embodiments of this utility model, the first electrical component is located on the side of the circuit board body away from the cover. The circuit board assembly further includes a circuit board bracket, which is disposed in the box and located on the side of the circuit board body away from the cover. The circuit board bracket has a clearance opening to avoid the heat sink.

[0020] In some embodiments of this utility model, the circuit board assembly further includes a terminal block, which is disposed on one side of the circuit board body in the thickness direction and is directly connected to the circuit board body.

[0021] In some embodiments of this utility model, the electrical control box assembly further includes a protective cover, which covers the side of the circuit board body where the terminal block is located in the thickness direction, and the protective cover has an opening opposite to the terminal block.

[0022] In some embodiments of this utility model, the circuit board assembly includes a circuit board bracket, which is located on the side of the circuit board body away from the terminal block in the thickness direction and is connected to the circuit board body. The circuit board bracket is also connected to the electrical control box body and the protective cover.

[0023] In some embodiments of this utility model, the protective cover has a wire-passing notch on the side facing the circuit board body for passing wires; and / or, the protective cover has a wire-locking hook on the side away from the circuit board body for fixing wires.

[0024] The air conditioner according to an embodiment of the present invention includes the above-described electrical control box assembly.

[0025] According to the embodiment of the present invention, the air conditioner, by providing the above-mentioned electrical control box assembly, has a heat dissipation vent in the electrical control box body; a circuit board assembly is located inside the electrical control box body and connected to the electrical control box body, the circuit board assembly includes a circuit board body and a first electrical component, the first electrical component is disposed on one side of the circuit board body in the thickness direction and connected to the circuit board body; a heat sink is connected to at least one of the circuit board body and the electrical control box body, and is thermally connected to the first electrical component for dissipating heat from the first electrical component, the heat sink is opposite to or passes through the heat dissipation vent, so that the heat sink can be exposed to the outside air, thereby improving the heat dissipation efficiency of the heat sink and improving the heat dissipation effect.

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

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

[0028] Figure 1 This is a perspective view of an air conditioner according to an embodiment of the present utility model;

[0029] Figure 2 This is a top view of the electrical control box assembly according to Embodiment 1 of the present utility model, wherein the electrical control box body is not shown;

[0030] Figure 3 yes Figure 2 A partially enlarged view of the cross-sectional view at point AA;

[0031] Figure 4 yes Figure 2 A partially enlarged view of the sectional view at point BB;

[0032] Figure 5 This is an exploded view of the electrical control box assembly according to Embodiment 1 of the present utility model, wherein the electrical control box body is not shown.

[0033] Figure 6 This is a top view of the electrical control box assembly according to Embodiment 2 of the present utility model, wherein the electrical control box body is not shown;

[0034] Figure 7 yes Figure 6 A partially enlarged view of the cross-sectional view at point CC;

[0035] Figure 8 This is an exploded view of the electrical control box assembly according to Embodiment 2 of the present utility model, wherein the electrical control box body is not shown;

[0036] Figure 9 This is a top view of the electrical control box assembly according to Embodiment 3 of the present utility model, wherein the electrical control box body is not shown;

[0037] Figure 10 yes Figure 9 Sectional view at point DD;

[0038] Figure 11 yes Figure 9 A partially enlarged view of the sectional view at the EE section;

[0039] Figure 12 This is an exploded view of the electrical control box assembly according to Embodiment 3 of the present utility model, wherein the electrical control box body is not shown;

[0040] Figure 13 This is a top view of the electrical control box assembly according to Embodiment 4 of this utility model;

[0041] Figure 14 yes Figure 13 Sectional view at FF;

[0042] Figure 15 yes Figure 13 A partially enlarged view of the cross-sectional view at point GG;

[0043] Figure 16 This is an exploded view of the electrical control box assembly according to Embodiment 4 of this utility model;

[0044] Figure 17 This is a perspective view of the electrical control box assembly according to Embodiment 5 of this utility model;

[0045] Figure 18This is a perspective view of the electrical control box assembly according to Embodiment 5 of the present invention;

[0046] Figure 19 This is an exploded view of the electrical control box assembly according to Embodiment 5 of this utility model;

[0047] Figure 20 This is a perspective view of the heat sink of the electrical control box assembly according to Embodiment 5 of this utility model;

[0048] Figure 21 This is a perspective view of the electrical control box body of the electrical control box assembly according to Embodiment 5 of this utility model;

[0049] Figure 22 This is a perspective view of the circuit board bracket of the electrical control box assembly according to Embodiment 5 of this utility model;

[0050] Figure 23 This is a perspective view of the connection between the electrical control box body and the heat sink in the electrical control box assembly according to Embodiment 5 of this utility model;

[0051] Figure 24 This is a top view of the electrical control box assembly according to Embodiment 5 of the present utility model, wherein the box cover is not shown;

[0052] Figure 25 yes Figure 24 Sectional view at HH;

[0053] Figure 26 yes Figure 25 Enlarged view of point P in the middle;

[0054] Figure 27 This is a perspective view of the electrical control box assembly according to an embodiment of the present utility model, wherein the box cover is not shown;

[0055] Figure 28 This is an exploded view of the electrical control box assembly according to an embodiment of the present utility model;

[0056] Figure 29 This is a perspective view of the electrical control box assembly according to an embodiment of the present utility model, wherein the electrical control box body is not shown;

[0057] Figure 30 This is a perspective view of the circuit board body of the electrical control box assembly according to an embodiment of the present utility model;

[0058] Figure 31 This is a perspective view of the protective cover of the electrical control box assembly according to an embodiment of the present utility model;

[0059] Figure 32 This is a bottom view of the electrical control box assembly according to an embodiment of the present utility model;

[0060] Figure 33This is a partial cross-sectional view of the snap-fit ​​position between the circuit board bracket and the main body of the control box assembly according to an embodiment of the present utility model.

[0061] Figure label:

[0062] 100. Air conditioner;

[0063] 10. Electrical control box assembly;

[0064] 1. Electrical control box body; 11. Heat dissipation vent; 12. Box cover; 13. Box body; 14. First slot; 15. First connection hole; 16. Positioning hole; 17. Second connection hole;

[0065] 2. Circuit board assembly; 21. Circuit board body; 22. First electrical component; 23. Second electrical component;

[0066] 3. Heat sink; 31. Raised edge; 32. Limiting protrusion; 33. Thermal pad; 34. Connecting groove;

[0067] 4. First heat dissipation bracket; 41. First plate; 42. Second plate; 43. Third plate; 44. Installation space; 45. Limiting groove; 46. First frame; 47. Connecting plate; 48. Second frame; 491. First positioning post; 492. Second positioning post; 493. Third positioning post; 494. Connecting post;

[0068] 5. Second heat dissipation bracket;

[0069] 6. Circuit board bracket; 61. Clearance opening; 62. First hook; 63. Second hook; 64. Reinforcing rib;

[0070] 7. Terminal block;

[0071] 8. Protective cover; 81. Wire pass-through notch; 82. Wire catch hook; 83. Second slot; 84. Opening. Detailed Implementation

[0072] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0073] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, features defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0074] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0075] The following is for reference. Figures 2-33 The electrical control box assembly 10 according to an embodiment of the present utility model is described.

[0076] like Figures 2-33 As shown, the electrical control box assembly 10 according to an embodiment of the present utility model includes: an electrical control box body 1, a circuit board assembly 2, and a heat sink 3.

[0077] Specifically, refer to Figures 13-23 The electrical control box body 1 has a heat dissipation vent 11; the circuit board assembly 2 is located inside the electrical control box body 1 and is connected to the electrical control box body 1. The circuit board assembly 2 includes a circuit board body 21 and a first electrical component 22. The first electrical component 22 is located on one side of the circuit board body 21 in the thickness direction and is connected to the circuit board body 21. It should be noted that the first electrical component 22 is the main heat-generating electrical component. The first electrical component 22 may include functional modules such as a main control module, a drive module, etc.

[0078] Furthermore, such as Figures 2-26As shown, the heat sink 3 is connected to at least one of the circuit board body 21 and the electrical control box body 1, and is thermally connected to the first electrical component 22 for heat dissipation of the first electrical component 22. That is, the heat sink 3 can be connected only to the circuit board body 21, only to the electrical control box body 1, or to both the circuit board body 21 and the electrical control box body 1, for example in… Figures 2-16 In the example shown, the heat sink 3 can be connected only to the circuit board body 21, for example in Figures 17-26 In the example shown, the heat sink 3 is connected to the electrical control box body 1. At the same time, the heat sink 3 is connected to the circuit board body 21 through the heat sink 3 and the first electrical component 22.

[0079] In addition, the heat sink 3 and the circuit board body 21 can also be thermally connected by thermal paste, thereby further improving the heat dissipation effect of the circuit board body 21.

[0080] Furthermore, such as Figure 19 As shown, a thermally conductive pad 33 is provided between the heat sink 3 and the first electrical component 22, thereby further improving the heat dissipation efficiency and effect of the first electrical component 22. It should be noted that the material (main indicator is thermal conductivity), thickness, and size of the thermally conductive pad 33 can be flexibly adjusted according to actual heat dissipation requirements. The higher the thermal conductivity, the smaller the thickness, and the larger the size of the thermally conductive pad 33, the better the heat dissipation effect. For example, in this application, a thermally conductive pad 33 with a thermal conductivity of 3 W / m·K, a thickness of 3 mm, and a size of 40 mm * 30 mm is used.

[0081] Furthermore, such as Figures 2-33 As shown, the heat sink 3 is opposite to or passes through the heat dissipation port 11, thereby exposing the heat sink 3 to the outside air. The heat generated by the circuit board body 21 will be quickly transferred to the outside of the control box assembly 10 through the thermal pad 33 and the heat sink, realizing the internal temperature control of the control box assembly 10. The heat dissipation efficiency is increased by 75% compared to the heat sink 3 being completely located inside the control box body 1, thereby improving the heat dissipation efficiency of the heat sink 3 and improving the heat dissipation effect.

[0082] Furthermore, the size of the heat sink 3 can be flexibly adjusted according to actual heat dissipation needs. For example, the heat sink 3 can have fins, and the number, spacing, thickness, length, shape, and other parameters of the fins can be flexibly adjusted (which can be summarized as the equivalent heat dissipation area; the larger the area, the better the heat dissipation effect). The material of the heat sink 3 can also be changed (for example, by replacing it with pure aluminum, aluminum alloy, copper, or other materials; the higher the thermal conductivity of the material, the better the heat dissipation effect). The heat sink 3 of this application uses aluminum alloy parts and 12 fins that are 5mm high, 40mm long, and 1.2mm thick, with corrugated grooves machined on the surface of the fins to increase the heat dissipation area.

[0083] According to the embodiment of the present utility model, the electrical control box assembly 10 has a heat dissipation vent 11 in the electrical control box body 1; the circuit board assembly 2 is located inside the electrical control box body 1 and connected to the electrical control box body 1, the circuit board assembly 2 includes a circuit board body 21 and a first electrical component 22, the first electrical component 22 is disposed on one side of the circuit board body 21 in the thickness direction and connected to the circuit board body 21; the heat sink 3 is connected to at least one of the circuit board body 21 and the electrical control box body 1, and is thermally connected to the first electrical component 22 for dissipating heat from the first electrical component 22, the heat sink 3 is opposite to the heat dissipation vent 11 or passes through the heat dissipation vent 11, so that the heat sink 3 can be exposed to the outside air, thereby improving the heat dissipation efficiency of the heat sink 3 and improving the heat dissipation effect.

[0084] In some embodiments of this utility model, such as Figures 2-16 and Figures 27-30 As shown, the circuit board assembly 2 also includes a second electrical component 23. The heat generated by the second electrical component 23 is less than that generated by the first electrical component 22. The second electrical component 23 and the first electrical component 22 are located on the same side of the circuit board body 21 in the thickness direction.

[0085] Understandably, the second electrical component 23 generates less heat and does not require heat dissipation through the heat sink 3, thus ensuring the economy and lightweight design of the electrical control box assembly 10. Furthermore, the design of the second electrical component 23 and the first electrical component 22 being located on the same side of the circuit board body 21 in the thickness direction simplifies the production and assembly process of the circuit board body 21. With both components on the same side, automated assembly equipment can more easily identify and place them. Simultaneously, the signal path between the second electrical component 23 and the first electrical component 22 is shorter, helping to reduce electromagnetic interference and signal delay.

[0086] In some embodiments of this utility model, such as Figures 17-26 As shown, the circuit board assembly 2 also includes a second electrical component 23 (not shown). The heat generated by the second electrical component 23 is less than that generated by the first electrical component 22. The second electrical component 23 and the first electrical component 22 are located on opposite sides of the circuit board body 21 in the thickness direction.

[0087] Understandably, the second electrical component 23 generates less heat and does not require heat dissipation through the heat sink 3, thus ensuring the economy and lightweight design of the control box assembly 10. The second electrical component 23 and the first electrical component 22 are located on opposite sides of the circuit board body 21 in the thickness direction. Since the heat sink 3 needs to connect to the first electrical component 22, meaning the heat sink 3 and the first electrical component 22 must be located on opposite sides of the circuit board body 21 in the thickness direction, the heat sink 3 and the second electrical component 23 are also located on opposite sides of the circuit board body 21 in the thickness direction. Therefore, the placement of the second electrical component 23 can be re-optimized, reducing safety issues such as existing wiring touching the sharp edge of the heat sink 3. Simultaneously, the area of ​​the side of the circuit board body 21 facing the second electrical component 23 in the thickness direction can be reduced, providing a prerequisite for miniaturizing the circuit board body 21 and reducing costs.

[0088] In some embodiments of this utility model, such as Figures 2-26 As shown, the heat sink 3 is connected to the circuit board body 21 by fasteners, and the first electrical component 22 is located between the heat sink 3 and the circuit board body 21.

[0089] It is understandable that in the prior art, the fastener passes through the circuit board body 21, the first electrical component 22 and the heat sink 3 in sequence to connect the circuit board body 21, the first electrical component 22 and the heat sink 3. At this time, the weight of the heat sink 3 is completely applied to the first electrical component 22, and the size of the heat sink 3 is limited by the force range of the solder pins of the first electrical component 22.

[0090] The heat sink 3 is connected to the circuit board body 21 by fasteners, so that the weight of the heat sink 3 (which can be vertically pressed onto the circuit board body 21 or form a cantilever beam structure with the circuit board body 21) can be directly transferred to the circuit board body 21 through the fasteners. The first electrical component 22 is located between the heat sink 3 and the circuit board body 21. The first electrical component 22 is soldered to the circuit board body 21 and is thermally connected to the heat sink 3 by thermally conductive adhesive. That is, the fasteners between the heat sink 3 and the circuit board body 21 avoid the first electrical component 22. Thus, on the one hand, the weight of the heat sink 3 on the first electrical component 22 is reduced, and the solder pins of the first electrical component 22 are reduced. On the other hand, the size of the heat sink 3 can be increased, thereby further improving the heat dissipation efficiency and heat dissipation effect.

[0091] For example, in this utility model, the fastener is a rivet, or it can be a screw, etc. Two positioning rivets are added to the heat sink 3. The rivets are welded to the corresponding openings on the circuit board body 21 for separate fixation, which has better fixing strength. The first electrical component 22 is bonded and fixed to the bottom of the heat sink 3 with a strong adhesive heat-conducting sheet. In addition, the loose rivets can also be extended and replaced with copper elastic buckles to assemble and fix with the circuit board body 21. Finally, welding is performed.

[0092] In some embodiments of this utility model, such as Figures 2-12 As shown, the electrical control box assembly 10 also includes a first heat dissipation bracket 4, which is located between the heat sink 3 and the circuit board body 21 and is used to support the heat sink 3.

[0093] It is understandable that by supporting the heat sink 3 with the first heat sink bracket 4, the weight of the heat sink 3 can be better transferred to the circuit board body 21, thereby further reducing the force on the solder pins of the first electrical component 22. This reduces the weight of the heat sink 3 on the first electrical component 22 and reduces the damage to the solder pins of the first electrical component 22. On the other hand, it allows the heat sink 3 to be larger, thereby further improving the heat dissipation efficiency and effect.

[0094] In some embodiments of this utility model, such as Figures 6-8 As shown, the first heat dissipation bracket 4 includes a first plate 41, a second plate 42, and a third plate 43. The first plate 41 and the second plate 42 are respectively connected to the two ends of the third plate 43 along its length. The first plate 41 and the second plate 42 are both located on the side of the third plate 43 away from the circuit board body 21. The third plate 43, the circuit board body 21, and the heat sink 3 are connected. A portion of the heat sink 3 is located between the first plate 41 and the second plate 42. At least a portion of the first electrical component 22 is located on the side of the third plate 43 away from the circuit board body 21. The two ends of the first electrical component 22 along the width direction of the third plate 43 are connected to the circuit board body 21.

[0095] It is understandable that the heat sink 3 is located between the first plate 41 and the second plate 42, so that the first plate 41 and the second plate 42 can restrict the heat sink 3 from moving in the length direction of the third plate 43. At the same time, when the length direction of the third plate 43 is vertical, a cantilever beam structure is formed between the heat sink 3, the first heat sink bracket 4 and the circuit board body 21. Thus, the gravity of the heat sink 3 can be transferred to the circuit board body 21 through the first heat sink bracket 4, thereby reducing the stress on the solder pins of the first electrical component 22.

[0096] In addition, the third plate 43 has a first positioning post 491, the circuit board body 21 has a first connecting hole 15, and the end face of the heat sink 3 facing the third plate 43 has a connecting groove 34. Fasteners pass through the first connecting hole 15, the first positioning post 491 and the connecting groove 34 in sequence to connect the third plate 43, the circuit board body 21 and the heat sink 3. The first electrical component 22 has a clearance through hole to avoid the fastener, thereby preventing the force on the fastener from being transmitted to the first electrical component 22, thereby reducing the force on the solder pins of the first electrical component 22.

[0097] Furthermore, there are multiple first positioning posts 491, first connecting holes 15, and connecting slots 34, thereby improving the connection reliability of the third board 43, the circuit board body 21, and the heat sink 3. For example, in Figures 6-8 In the example shown, there are two of each of the first positioning post 491, the first connecting hole 15, and the connecting groove 34. However, this utility model is not limited to this. There can be more of the first positioning post 491, the first connecting hole 15, and the connecting groove 34, such as 3, 4, 5, or 6.

[0098] In some embodiments of this utility model, such as Figures 2-5 and Figures 9-12 As shown, the first heat dissipation bracket 4 has a limiting groove 45, and the heat sink 3 has a limiting protrusion 32, which is adapted to be disposed in the limiting groove 45. Thus, the cooperation between the limiting protrusion 32 and the limiting groove 45 facilitates the installation and positioning of the heat sink 3 on the first heat dissipation bracket 4.

[0099] In some embodiments of this utility model, such as Figures 2-5 As shown, the first heat dissipation bracket 4 includes: a first frame 46, which is connected to the circuit board body 21. The first frame 46 has an installation space 44 that extends through the first frame 46 along the thickness direction of the circuit board body 21. A first electrical component 22 is disposed in the installation space 44. A heat sink 3 is disposed on the side of the first frame 46 away from the circuit board body 21 and abuts against the first frame 46. Each of the opposite ends of the side of the first frame 46 away from the circuit board body 21 has a limiting groove 45. The two ends of the limiting protrusion 32 in the length direction are respectively disposed in the two limiting grooves 45.

[0100] It is understandable that, since the two ends of the limiting protrusion 32 are respectively located in the two limiting grooves 45 along the length direction, the weight of the heat sink 3 falls on the first frame 46. Since the first frame 46 is connected to the circuit board body 21, the weight of the heat sink 3 can be borne by the circuit board body 21. Thus, the weight of the heat sink 3 can be better transferred to the circuit board body 21, thereby further reducing the force on the solder pins of the first electrical component 22. This reduces the weight of the heat sink 3 on the first electrical component 22, reducing damage to the solder pins of the first electrical component 22. On the other hand, it allows the heat sink 3 to be larger, thereby further improving the heat dissipation efficiency and effect.

[0101] Furthermore, the end face of the heat sink 3 facing the circuit board body 21 is thermally connected to the first electrical component 22. It should be noted that since most of the weight of the heat sink 3 falls on the first frame 46, the weight of the heat sink 3 on the first electrical component 22 is relatively small, reducing the damage to the solder pins of the first electrical component 22.

[0102] In some embodiments of this utility model, such as Figures 2-5 As shown, the first heat dissipation bracket 4 further includes a connecting plate 47, which is connected to the side of the first frame 46 facing the circuit board body 21. The two ends of the connecting plate 47 in the length direction are respectively connected to opposite sides of the first frame 46. The first electrical component 22 is disposed between the connecting plate 47 and the heat sink 3. This allows for better positioning and installation of the first electrical component 22.

[0103] Furthermore, such as Figures 2-5 As shown, the end of the connecting plate 47 facing the circuit board body 21 has a second positioning post 492, the circuit board body 21 has a first connecting hole 15, and the end face of the heat sink 3 facing the third plate 43 has a connecting groove 34. The fastener passes through the first connecting hole 15, the second positioning post 492 and the connecting groove 34 in sequence to connect the connecting plate 47, the circuit board body 21 and the heat sink 3. The first electrical component 22 has a clearance through hole to avoid the fastener, thereby preventing the force on the fastener from being transmitted to the first electrical component 22, thereby reducing the force on the solder pins of the first electrical component 22.

[0104] Furthermore, there are multiple second positioning posts 492, first connecting holes 15, and connecting slots 34, thereby improving the connection reliability of the connecting plate 47, circuit board body 21, and heat sink 3. For example, in Figures 2-5 In the example shown, there are two second positioning posts 492, two first connecting holes 15, and two connecting grooves 34. However, the present invention is not limited to this. There can be more than one first positioning post 491, one first connecting hole 15, and one connecting groove 34, such as three, four, five, or six.

[0105] Furthermore, such as Figures 2-5 As shown, the first frame 46 has a third positioning post 493 at one end facing the circuit board body 21, and the circuit board body 21 has a positioning hole 16 that cooperates with the third positioning post 493, thereby facilitating the installation and positioning of the first frame 46 on the circuit board body 21.

[0106] In some embodiments of this utility model, such as Figures 9-12 As shown, the first heat dissipation bracket 4 includes: a second frame 48, which is connected to the circuit board body 21. The second frame 48 has an installation space 44 that extends through the second frame 48 along the thickness direction of the circuit board body 21. A portion of the heat sink 3 is disposed in the installation space 44. The heat sink 3 is directly connected to the circuit board body 21. Each end of the second frame 48 on the side away from the circuit board body 21 has a limiting groove 45. The two ends of the limiting protrusion 32 in the length direction are respectively disposed in the two limiting grooves 45. The first electrical component 22 is disposed between the bottom wall of the limiting groove 45 and the circuit board body 21.

[0107] It is understandable that, since the two ends of the limiting protrusion 32 are respectively located in the two limiting grooves 45 along the length direction, the weight of the heat sink 3 falls on the second frame 48. Since the second frame 48 is connected to the circuit board body 21, the weight of the heat sink 3 can be borne by the circuit board body 21. Thus, the weight of the heat sink 3 can be better transferred to the circuit board body 21. The first electrical component 22 is located between the bottom wall of the limiting groove 45 and the circuit board body 21, thereby further reducing the force on the solder pins of the first electrical component 22. This reduces the weight of the heat sink 3 on the first electrical component 22 and reduces the damage to the solder pins of the first electrical component 22. On the other hand, it allows the heat sink 3 to be larger, thereby further improving the heat dissipation efficiency and heat dissipation effect.

[0108] Furthermore, such as Figures 9-12 As shown, the second frame 48 has connecting posts 494 on its peripheral wall, and the circuit board body 21 has second connecting holes 17. Fasteners pass through the second connecting holes 17 and the connecting posts 494 in sequence, thereby connecting the second frame 48 and the circuit board body 21. The connecting posts 494 are a plurality of spaced-apart posts along the circumferential direction of the second frame 48, and the second connecting holes 17 are a plurality of holes corresponding one-to-one with the plurality of connecting posts 494. This further improves the reliability of the connection between the second frame 48 and the circuit board body 21, for example, in... Figures 9-12 In the example shown, there are four second connecting holes 17 and four connecting posts 494. However, the present invention is not limited to this. The number of second connecting holes 17 and connecting posts 494 can also be other numbers, such as two, five, six or eight.

[0109] In some embodiments of this utility model, such as Figures 13-16 As shown, the electrical control box assembly 10 also includes: a second heat dissipation bracket 5, which is sleeved on the heat sink 3. One end of the second heat dissipation bracket 5 is located inside the electrical control box body 1 in the axial direction, and the other end of the second heat dissipation bracket 5 surrounds the heat dissipation port 11 and is connected to the electrical control box body 1.

[0110] Understandably, the second heat dissipation bracket 5 extends along the thickness direction of the circuit board body 21. When the distance between the circuit board body 21 and the heat dissipation port 11 is too far, part of the heat sink 3 will be located inside the electrical control box body 1, and part of the heat sink 3 will still exchange heat with the gas inside the electrical control box body 1. However, due to the setting of the second heat dissipation bracket 5, the heat sink 3 located inside the electrical control box body 1 can be separated from the space inside the electrical control box body 1, thereby allowing the heat sink 3 to exchange heat with the outside air, thus improving the heat dissipation efficiency of the heat sink 3 and improving the heat dissipation effect.

[0111] In some embodiments of this utility model, such as Figures 13-16As shown, one end of the second heat dissipation bracket 5 in the axial direction is spaced apart from the peripheral wall of the radiator 3, thereby facilitating the installation between the radiator 3 and the second heat dissipation bracket 5.

[0112] In some embodiments of this utility model, one end of the second heat dissipation bracket 5 in the axial direction is connected to the peripheral wall of the heat sink 3, thereby better blocking the heat exchange between the heat sink 3 located in the electrical control box body 1 and the gas inside the electrical control box body 1, thereby further improving the heat dissipation efficiency of the heat sink 3 and improving the heat dissipation effect.

[0113] In some embodiments of this utility model, the other axial end of the second heat dissipation bracket 5 is located inside the electrical control box body 1 and is connected to the inner wall of the electrical control box body 1. This protects the second heat dissipation bracket 5.

[0114] In some embodiments of this utility model, such as Figures 13-16 As shown, the second heat dissipation bracket 5 passes through the heat dissipation port 11, and the other axial end of the second heat dissipation bracket 5 is located outside the electrical control box body 1 and connected to the outer peripheral wall of the electrical control box body 1. This better blocks the heat exchange between the heat sink 3 located inside the electrical control box body 1 and the gas inside the electrical control box body 1, thereby further improving the heat dissipation efficiency of the heat sink 3 and improving the heat dissipation effect.

[0115] In some embodiments of this utility model, such as Figures 13-16 As shown, the cross-sectional area of ​​the second heat dissipation bracket 5 gradually increases from the end connected to the radiator 3 in the axial direction to the end connected to the electrical control box body 1. Therefore, at the end where the second heat dissipation bracket 5 is connected to the radiator 3 in the axial direction, the cross-sectional area of ​​the second heat dissipation bracket 5 is the smallest, thus better preventing heat exchange between the radiator 3 located inside the electrical control box body 1 and the gas inside the electrical control box body 1, thereby further improving the heat dissipation efficiency of the radiator 3 and enhancing the heat dissipation effect.

[0116] At the end of the second heat sink bracket 5 that is connected to the electrical control box body 1 in the axial direction, the cross-sectional area of ​​the second heat sink bracket 5 is the largest, which makes it easier for outside air to enter the gap between the second heat sink bracket 5 and the radiator 3 and exchange heat with the radiator 3, thereby further improving the heat dissipation efficiency of the radiator 3 and improving the heat dissipation effect.

[0117] In some embodiments of this utility model, such as Figures 17-26 As shown, the heat sink 3 is connected to the electrical control box body 1. The outer peripheral wall of the end of the heat sink 3 facing the circuit board body 21 has an annular protrusion 31. The protrusion 31 is located inside the electrical control box body 1 and is connected to the electrical control box body 1. It can be understood that the protrusion 31 is arranged around the heat dissipation port 11. Thus, the presence of the protrusion 31 facilitates the installation and positioning of the heat sink 3 on the electrical control box body 1.

[0118] In some embodiments of this utility model, such as Figures 2-16 As shown, the electrical control box body 1 includes a box body 13 and a box cover 12. One side of the box body 13 is open, forming an opening. The circuit board assembly 2 is disposed inside the box body 13. The box cover 12 is placed on the opening to seal it. A heat dissipation vent 11 is disposed on the box cover 12. Thus, the electrical control box body 1 of this utility model embodiment is formed.

[0119] In some embodiments of this utility model, such as Figures 17-26 As shown, the electrical control box body 1 includes a box body 13 and a box cover 12. One side of the box body 13 is open, forming an opening. The circuit board assembly 2 is disposed inside the box body 13. The box cover 12 is placed over the opening to seal it. A heat dissipation vent 11 is disposed on the box body 13. Thus, the electrical control box body 1 of this utility model embodiment is formed.

[0120] In some embodiments of this utility model, such as Figures 17-26 As shown, the first electrical component 22 is located on the side of the circuit board body 21 away from the box cover 12. The circuit board assembly 2 also includes a circuit board support 6, which is located inside the box 13 and on the side of the circuit board body 21 away from the box cover 12. The circuit board support 6 has a clearance opening 61 to avoid the heat sink 3.

[0121] It is understandable that the circuit board bracket 6 is connected to both the box 13 and the circuit board body 21. The setting of the clearance opening 61 allows the heat sink 3 to pass through the clearance opening 61 and make a thermal connection with the first electrical component 22, thereby achieving heat dissipation for the first electrical component 22.

[0122] Furthermore, such as Figure 22 As shown, the side of the circuit board support 6 facing the circuit board body 21 has a reinforcing rib 64, which surrounds the clearance opening 61, thereby improving the structural strength of the circuit board support 6.

[0123] In some embodiments of this utility model, such as Figures 32-33 As shown, the circuit board support 6 has a first hook 62, and the housing 13 has a first slot 14 that mates with the first hook 62, thereby enabling the circuit board support 6 and the housing 13 to engage, improving the connection reliability and ease of assembly / disassembly between the circuit board support 6 and the housing 13. Multiple first hooks 62 and first slots 14 are used, further enhancing the connection reliability and ease of assembly / disassembly between the circuit board support 6 and the housing 13. For example, in... Figure 32 and Figure 33 In the example shown, there are two first hooks 62 and two first slots 14. However, the present invention is not limited to this. There can be more first hooks 62 and more first slots 14, such as three, four, five or six.

[0124] Furthermore, such as Figures 32-33 As shown, the circuit board support 6 and the housing 13 are connected by fasteners such as screws, thereby further improving the connection reliability between the circuit board support 6 and the housing 13.

[0125] In some embodiments of this utility model, such as Figures 27-31 As shown, the circuit board assembly 2 also includes a terminal block 7, which is located on one side of the circuit board body 21 in the thickness direction and is directly connected to the circuit board body 21. It can be understood that by directly connecting the terminal block 7 to one side of the circuit board body 21 in the thickness direction, the wiring between the terminal block 7 and the circuit board body 21 is reduced, saving space, reducing cable management, and improving production efficiency.

[0126] In some embodiments of this utility model, such as Figures 27-31 As shown, the electrical control box assembly 10 also includes a protective cover 8, which covers the side of the circuit board body 21 where the terminal block 7 is located in the thickness direction. The protective cover 8 has an opening 84 opposite to the terminal block 7. It is understood that the protective cover 8 serves two purposes: firstly, it prevents contact between the terminal block 7 and electrical components on the circuit board body 21, thus avoiding leakage; secondly, it prevents screwdrivers from hitting the circuit board body 21 during the disassembly and installation of the electrical control box assembly 10, thereby improving safety.

[0127] In some embodiments of this utility model, such as Figure 22 and Figures 27-31 As shown, the circuit board assembly 2 includes a circuit board bracket 6, which is located on the side of the circuit board body 21 away from the terminal block 7 in the thickness direction and is connected to the circuit board body 21. The circuit board bracket 6 is also connected to the electrical control box body 1 and the protective cover 8.

[0128] Understandably, the protective cover 8 is connected to the circuit board bracket 6, thus enabling the protective cover 8 to be installed stably. The protective cover 8 has a second slot 83, and the circuit board bracket 6 has a second hook 63 that mates with the second slot 83. This achieves the snap-fit ​​connection between the protective cover 8 and the circuit board bracket 6, thereby improving the reliability of the connection and the ease of disassembly.

[0129] Furthermore, there are multiple second slots 83 and multiple second hooks 63, which further improves the connection reliability between the protective cover 8 and the circuit board bracket 6.

[0130] In some embodiments of this utility model, such as Figures 27-31 As shown, the protective cover 8 has a wire-passing notch 81 on the side facing the circuit board body 21 for wire passing; thus, it facilitates the arrangement and passage of the wires.

[0131] In some embodiments of this utility model, such as Figures 27-31 As shown, the protective cover 8 has a wire hook 82 on the side opposite to the circuit board body 21 for fixing the wires. This achieves wire fixation.

[0132] The following describes the electrical control box assembly 10 according to specific embodiments one to five of the present utility model. It is worth understanding that the following description is merely exemplary and intended to explain the utility model, and should not be construed as a limitation of the utility model.

[0133] The following is for reference. Figures 2-5 and Figures 27-33 Description of a specific embodiment of this utility model:

[0134] like Figures 2-5 and Figures 27-33 As shown, the electrical control box assembly 10 according to an embodiment of the present utility model includes: an electrical control box body 1, a circuit board assembly 2, a heat sink 3, a first heat sink bracket 4, and a protective cover 8.

[0135] like Figures 2-5 and Figures 27-33 As shown, the main body 1 of the electrical control box includes a box body 13 and a box cover 12. One side of the box body 13 is open, forming an opening. The circuit board assembly 2 is disposed inside the box body 13. The box cover 12 is placed on the opening to seal it.

[0136] Furthermore, such as Figures 2-5 and Figures 27-33 As shown, the circuit board assembly 2 is located inside the electrical control box body 1 and is connected to the electrical control box body 1. The circuit board assembly 2 includes a circuit board body 21, a first electrical component 22, a second electrical component 23, a terminal block 7, and a circuit board bracket 6.

[0137] Furthermore, such as Figures 2-5 and Figures 27-33 As shown, the first electrical component 22 is located on one side of the circuit board body 21 along its thickness direction and is connected to the circuit board body 21; the second electrical component 23 generates less heat than the first electrical component 22, and the second electrical component 23 and the first electrical component 22 are located on the same side of the circuit board body 21 along its thickness direction. The heat sink 3 is connected to the circuit board body 21 by fasteners and is thermally connected to the first electrical component 22, used to dissipate heat from the first electrical component 22. The first electrical component 22 is located between the heat sink 3 and the circuit board body 21.

[0138] Furthermore, such as Figures 2-5As shown, the first heat dissipation bracket 4 is located between the heat sink 3 and the circuit board body 21, and is used to support the heat sink 3. The first heat dissipation bracket 4 has a limiting groove 45, and the heat sink 3 has a limiting protrusion 32, which is adapted to be disposed in the limiting groove 45. The first heat dissipation bracket 4 includes: a first frame 46 and a connecting plate 47. The first frame 46 is connected to the circuit board body 21. The first frame 46 has an installation space 44 that extends through the first frame 46 along the thickness direction of the circuit board body 21. The first electrical component 22 is disposed in the installation space 44. The heat sink 3 is disposed on the side of the first frame 46 away from the circuit board body 21 and abuts against the first frame 46. Both opposite ends of the side of the first frame 46 away from the circuit board body 21 have limiting grooves 45. The two ends of the limiting protrusion 32 in the length direction are respectively disposed in the two limiting grooves 45. The connecting plate 47 is connected to the side of the first frame 46 facing the circuit board body 21. The two ends of the connecting plate 47 in the length direction are respectively connected to the opposite sides of the first frame 46. The first electrical component 22 is disposed between the connecting plate 47 and the heat sink 3.

[0139] Furthermore, such as Figures 27-33 As shown, the terminal block 7 is located on one side of the circuit board body 21 in the thickness direction and is directly connected to the circuit board body 21.

[0140] Furthermore, such as Figures 27-33 As shown, a protective cover 8 is installed on the side of the circuit board body 21 where the terminal block 7 is located in the thickness direction. The protective cover 8 has an opening 84 opposite to the terminal block 7. A circuit board support 6 is located on the side of the circuit board body 21 away from the terminal block 7 in the thickness direction and is connected to the circuit board body 21. The circuit board support 6 is connected to both the electrical control box body 1 and the protective cover 8. The side of the protective cover 8 facing the circuit board body 21 has a wire passing notch 81 for passing wires; the side of the protective cover 8 away from the circuit board body 21 has a wire holding hook 82 for fixing the wires.

[0141] The following is for reference. Figures 6-8 Description of a specific embodiment of this utility model, Part Two:

[0142] In particular, most of the structures in Embodiment 2 are the same as those in Embodiment 1. The same structures are marked with the same reference numerals in the accompanying drawings. The only difference is that the first heat dissipation bracket 4 includes a first plate 41, a second plate 42 and a third plate 43. The first plate 41 and the second plate 42 are respectively connected to the two ends of the third plate 43 in the length direction. The first plate 41 and the second plate 42 are both located on the side of the third plate 43 away from the circuit board body 21. The third plate 43, the circuit board body 21 and the heat sink 3 are connected. A portion of the heat sink 3 is located between the first plate 41 and the second plate 42. At least a portion of the first electrical component 22 is located on the side of the third plate 43 away from the circuit board body 21. The two ends of the first electrical component 22 along the width direction of the third plate 43 are connected to the circuit board body 21.

[0143] The following is for reference. Figures 9-12 Description of specific embodiment three of this utility model:

[0144] In particular, most of the structures in Embodiment 3 are the same as those in Embodiment 1. The same structures are marked with the same reference numerals in the accompanying drawings. The only difference is that the first heat dissipation bracket 4 includes a second frame 48, which is connected to the circuit board body 21. The second frame 48 has an installation space 44 that extends through the second frame 48 along the thickness direction of the circuit board body 21. A portion of the heat sink 3 is disposed in the installation space 44. The heat sink 3 is directly connected to the circuit board body 21. Both ends of the second frame 48 on the side away from the circuit board body 21 have limiting grooves 45. The two ends of the limiting protrusion 32 in the length direction are respectively disposed in the two limiting grooves 45. The first electrical component 22 is disposed between the bottom wall of the limiting groove 45 and the circuit board body 21.

[0145] The following is for reference. Figures 13-16 Description of specific embodiment four according to this utility model:

[0146] In this embodiment, embodiment four is largely the same in structure as any one of embodiments one through three, and the same structures are marked with the same reference numerals in the accompanying drawings. The only difference is that: the cover 12 is provided with a heat dissipation vent 11, the heat sink 3 is opposite to or passes through the heat dissipation vent 11, and the electrical control box assembly 10 also includes: a second heat dissipation bracket 5, which is sleeved on the heat sink 3. One axial end of the second heat dissipation bracket 5 is located inside the electrical control box body 1, and the other axial end of the second heat dissipation bracket 5 surrounds the heat dissipation vent 11 and is connected to the electrical control box body 1. The cross-sectional area of ​​the second heat dissipation bracket 5 gradually increases from the end connected to the heat sink 3 to the end connected to the electrical control box body 1.

[0147] The following is for reference. Figures 17-26 Description of specific embodiment five according to this utility model:

[0148] In Embodiment 5, most of the structures are the same as in Embodiment 4, and the same structures are marked with the same reference numerals in the accompanying drawings. The only difference is that: the heat sink 3 is connected to the electrical control box body 1, the heat dissipation port 11 is provided on the box body 13, and the outer peripheral wall of the heat sink 3 facing the circuit board body 21 has an annular protrusion 31, which is located inside the box body 13 and connected to the box body 13. The second electrical component 23 and the first electrical component 22 are respectively provided on opposite sides of the circuit board body 21 in the thickness direction. The first electrical component 22 is located on the side of the circuit board body 21 away from the box cover 12. The circuit board support 6 is provided inside the box body 13 and is located on the side of the circuit board body 21 away from the box cover 12. The circuit board support 6 has a clearance opening 61 to avoid the heat sink 3.

[0149] The following is for reference. Figure 1 This invention describes an air conditioner 100 according to an embodiment of the present invention.

[0150] like Figures 1-33 As shown, the air conditioner 100 according to an embodiment of the present utility model includes the above-described electrical control box assembly 10.

[0151] According to the embodiment of the present utility model, the air conditioner 100, by setting the above-mentioned electrical control box assembly 10, has a heat dissipation vent 11 in the electrical control box body 1; the circuit board assembly 2 is located inside the electrical control box body 1 and connected to the electrical control box body 1, the circuit board assembly 2 includes a circuit board body 21 and a first electrical component 22, the first electrical component 22 is disposed on one side of the thickness direction of the circuit board body 21 and connected to the circuit board body 21; the radiator 3 is connected to at least one of the circuit board body 21 and the electrical control box body 1, and is thermally connected to the first electrical component 22 for dissipating heat from the first electrical component 22, the radiator 3 is opposite to the heat dissipation vent 11 or passes through the heat dissipation vent 11, so that the radiator 3 can be exposed to the outside air, thereby improving the heat dissipation efficiency of the radiator 3 and improving the heat dissipation effect.

[0152] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0153] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. An electrical control box assembly, characterized in that, include: The electrical control box body has a heat dissipation vent. A circuit board assembly is located within the electrical control box body and is connected to the electrical control box body. The circuit board assembly includes a circuit board body and a first electrical component. The first electrical component is disposed on one side of the circuit board body in the thickness direction and is connected to the circuit board body. A heat sink is connected to at least one of the circuit board body and the electrical control box body, and is thermally connected to the first electrical component for dissipating heat from the first electrical component. The heat sink is opposite to or passes through the heat dissipation port.

2. The electrical control box assembly according to claim 1, characterized in that, The circuit board assembly further includes a second electrical component, the heat generated by the second electrical component being less than that generated by the first electrical component, and the second electrical component and the first electrical component being disposed on the same side or opposite sides in the thickness direction of the circuit board body.

3. The electrical control box assembly according to claim 1, characterized in that, The heat sink is connected to the circuit board body by fasteners, and the first electrical component is located between the heat sink and the circuit board body.

4. The electrical control box assembly according to claim 3, characterized in that, The electrical control box assembly also includes: A first heat dissipation bracket is located between the heat sink and the circuit board body, and is used to support the heat sink.

5. The electrical control box assembly according to claim 4, characterized in that, The first heat sink bracket includes: A first plate, a second plate, and a third plate are connected. The first plate and the second plate are respectively connected to both ends of the third plate along its length. The first plate and the second plate are both located on the side of the third plate away from the circuit board body. The third plate, the circuit board body, and the heat sink are connected. A portion of the heat sink is located between the first plate and the second plate. At least a portion of the first electrical component is located on the side of the third plate away from the circuit board body. Both ends of the first electrical component along the width direction of the third plate are connected to the circuit board body.

6. The electrical control box assembly according to claim 4, characterized in that, The first heat dissipation bracket has a limiting groove, and the heat sink has a limiting protrusion, the limiting protrusion being adapted to be disposed in the limiting groove.

7. The electrical control box assembly according to claim 6, characterized in that, The first heat sink bracket includes: A first frame is connected to the circuit board body. The first frame has an installation space extending through the first frame along the thickness direction of the circuit board body. The first electrical component is disposed in the installation space. The heat sink is disposed on the side of the first frame away from the circuit board body and abuts against the first frame. The opposite ends of the side of the first frame away from the circuit board body each have the limiting groove. The two ends of the limiting protrusion along the length direction are respectively disposed in the two limiting grooves.

8. The electrical control box assembly according to claim 7, characterized in that, The first heat sink also includes: A connecting plate is attached to the side of the first frame facing the circuit board body. The two ends of the connecting plate along its length are respectively connected to opposite sides of the first frame. The first electrical component is disposed between the connecting plate and the heat sink.

9. The electrical control box assembly according to claim 6, characterized in that, The first heat sink bracket includes: The second frame is connected to the circuit board body. The second frame has an installation space that extends through the second frame along the thickness direction of the circuit board body. A portion of the heat sink is disposed in the installation space. The heat sink is directly connected to the circuit board body. The two opposite ends of the side of the second frame away from the circuit board body each have the limiting groove. The two ends of the limiting protrusion along the length direction are respectively disposed in the two limiting grooves. The first electrical component is disposed between the bottom wall of the limiting groove and the circuit board body.

10. The electrical control box assembly according to claim 1, characterized in that, The electrical control box assembly also includes: The second heat dissipation bracket is sleeved on the heat sink. One axial end of the second heat dissipation bracket is located inside the electrical control box body, and the other axial end of the second heat dissipation bracket surrounds the heat dissipation port and is connected to the electrical control box body.

11. The electrical control box assembly according to claim 10, characterized in that, The cross-sectional area of ​​the second heat sink gradually increases from the end connected to the radiator in the axial direction to the end connected to the electrical control box body.

12. The electrical control box assembly according to claim 1, characterized in that, The heat sink is connected to the electrical control box body. The outer peripheral wall of the heat sink facing the circuit board body has an annular protrusion. The protrusion is located inside the electrical control box body and is connected to the electrical control box body.

13. The electrical control box assembly according to claim 1, characterized in that, The electrical control box body includes a box body and a box cover. One side of the box body is open, forming an opening. The circuit board assembly is disposed inside the box body. The box cover is disposed on the opening to seal the opening. The heat dissipation vent is disposed on the box body or the box cover.

14. The electrical control box assembly according to claim 13, characterized in that, The first electrical component is located on the side of the circuit board body opposite to the cover, and the circuit board assembly further includes: A circuit board bracket is disposed inside the housing and located on the side of the circuit board body away from the housing cover. The circuit board bracket has a clearance opening to avoid the heat sink.

15. The electrical control box assembly according to claim 1, characterized in that, The circuit board assembly also includes: A connector is located on one side of the circuit board body in the thickness direction and is directly connected to the circuit board body.

16. The electrical control box assembly according to claim 15, characterized in that, The electrical control box assembly also includes: A protective cover is provided on the side of the circuit board body where the terminal block is located in the thickness direction, and the protective cover has an opening that is opposite to the terminal block.

17. The electrical control box assembly according to claim 16, characterized in that, The circuit board assembly includes a circuit board bracket, which is located on the side of the circuit board body away from the terminal block in the thickness direction of the circuit board body and is connected to the circuit board body. The circuit board bracket is also connected to the electrical control box body and the protective cover.

18. The electrical control box assembly according to claim 16, characterized in that, The protective cover has a wire-passing notch on the side facing the circuit board body for wire passing; And / or, the protective cover has a wire hook on the side opposite to the circuit board body for securing the wiring.

19. An air conditioner, characterized in that, Includes the electrical control box assembly according to any one of claims 1-18.

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