Heat dissipator, electric control box part, outdoor unit, and heating, ventilation, and air conditioning device

Abstract

A heat dissipator (100), an electric control box part (20), an outdoor unit (200), and a heating, ventilation, and air conditioning device. The radiator (100) is at least partially located in a fan cavity (212) of the outdoor unit (20). The radiator (100) comprises a heat dissipation substrate (10) and a plurality of heat dissipation fins (11). A heat dissipation channel (12) is defined between the plurality of heat dissipation fins (11) and the heat dissipation substrate (10). The wall surface of the heat dissipation substrate (10) facing the heat dissipation channel (12) is a channel wall surface (101). At least one channel wall surface (101) comprises a plurality of channel wall surface sections which are sequentially arranged in the up-down direction. A step wall surface (103) is connected between two adjacent channel wall surface sections. An included angle is formed between the step wall surface (103) and each channel wall surface section, and the included angle is an obtuse angle.

Description

CROSS-REFERENCE TO RELATED APPLICATION

[0001] This application is based on and claims priorities to Chinese patent applications No. 202323007095.3, filed on November 07, 2023, No. 202311514540.7, filed on November 14, 2023, and No. 202323073041.7, filed on November 14, 2023, the entire contents of which are incorporated herein by reference.FIELD

[0002] The present disclosure relates to the field of electrical control heat dissipation technologies, and more particularly, to a heat dissipator, an electrical control box assembly, an outdoor unit, and a heating and ventilation device.BACKGROUND

[0003] An electrical control box assembly is usually provided in an outdoor unit. An electrical control component is provided in the electrical control box assembly to control operations of other components in the outdoor unit. During an operation of the electrical control component, a large amount of heat is generated on the electrical control component. Therefore, a heat dissipator is usually disposed at the electrical control box assembly for heat dissipation, and the heat dissipator is at least partially disposed in a fan chamber of the outdoor unit. An outdoor fan in the fan chamber, when in operation, drives an airflow to flow, which can carry away heat from the heat dissipator. To improve a heat dissipation effect of the heat dissipator and maintain a satisfactory thermal connection or thermal contact between the heat dissipator and the electrical control component, a heat dissipation substrate of the heat dissipator is usually designed to match the electrical control component.

[0004] However, due to differences in heights of various parts of the electrical control component, a structure of the heat dissipator imposes a limitation after the heat dissipation substrate of the heat dissipator and the like are designed to match the electrical control component. Thus, only when the outdoor fan rotates in one direction, the airflow can smoothly flow through a heat dissipation channel of the heat dissipator. When the outdoor fan rotates in an opposite direction, the airflow cannot smoothly flow through the heat dissipation channel of the heat dissipator, and encounters a large resistance when flowing through the heat dissipation channel, which adversely affects a heat dissipation effect of the airflow on the heat dissipator. As a result, versatility of the heat dissipator is unsatisfactory.SUMMARY

[0005] The present disclosure aims to solve at least one of the technical problems in the related art. To this end, embodiments of the present disclosure are to provide a heat dissipator. A wall surface of a heat dissipation substrate of the heat dissipator facing a heat dissipation channel includes a plurality of channel wall surface segments arranged sequentially from top to bottom. A stepped wall surface is connected between two adjacent channel wall surface segments of the plurality of channel wall surface segments. An angle formed between the stepped wall surface and each of the two adjacent channel wall surface segments is an obtuse angle. In this way, regardless of whether an outdoor fan in a fan chamber rotates clockwise or counterclockwise, in a process of an airflow flowing through the heat dissipation channel of the heat dissipator, the obtuse angle formed between the stepped wall surface and the channel wall surface segment can reduce an obstructive effect of the stepped wall surface on the airflow entering the heat dissipation channel. By being guided by the stepped wall surface, the airflow can smoothly flow through the heat dissipation channel of the heat dissipator. As a result, a heat dissipation effect of the heat dissipator can be improved. Thus, the heat dissipator has high versatility.

[0006] Embodiments of the present disclosure are also to provide an electrical control box assembly including the above heat dissipator.

[0007] Embodiments of the present disclosure are also to provide an outdoor unit including the above electrical control box assembly.

[0008] Embodiments of the present disclosure are also to provide a heating and ventilation device including the above outdoor unit.

[0009] A heat dissipator for an electrical control box assembly according to an embodiment in a first aspect of the present disclosure is provided. The electrical control box assembly is applied in an outdoor unit. The heat dissipator is at least partially located in a fan chamber of the outdoor unit. The heat dissipator includes a heat dissipation substrate, and a plurality of heat dissipation fins disposed on the heat dissipation substrate. At least one heat dissipation channel is defined between the plurality of heat dissipation fins and the heat dissipation substrate, and each of the at least one heat dissipation channel extends in an up-down direction. The heat dissipation substrate is adapted to be thermally connected to or in thermal contact with an electrical control component of the electrical control box assembly. A wall surface of the heat dissipation substrate facing the at least one heat dissipation channel is a channel wall surface. The channel wall surface for the at least one heat dissipation channel includes a plurality of channel wall surface segments arranged sequentially in the up-down direction. A stepped wall surface is connected between two adjacent channel wall surface segments of the plurality of channel wall surface segments. An angle formed between the stepped wall surface and each of the two adjacent channel wall surface segments is an obtuse angle.

[0010] In the heat dissipator according to the embodiment of the present disclosure, the wall surface of the heat dissipation substrate of the heat dissipator facing the heat dissipation channel is designed to include the plurality of channel wall surface segments arranged sequentially from top to bottom. In addition, the stepped wall surface is connected between two adjacent channel wall surface segments. The obtuse angle is formed between the stepped wall surface and the respective channel wall surface segment. In this way, in the process of the airflow flowing through the heat dissipation channel of the heat dissipator, the obtuse angle formed between the stepped wall surface and the respective channel wall surface segment can reduce the obstructive effect of the stepped wall surface of the heat dissipation substrate on the airflow entering the heat dissipation channel, reducing an adverse effect of the stepped wall surface on the heat dissipation effect. By being guided by the stepped wall surface, the airflow can smoothly flow through the heat dissipation channel of the heat dissipator, which can improve the heat dissipation effect of the heat dissipator. As a result, regardless of whether the outdoor fan in the fan chamber rotates clockwise or counterclockwise, the airflow can smoothly flow through the heat dissipation channel, enhancing the versatility of the heat dissipator.

[0011] According to some embodiments of the present disclosure, the angle formed between the stepped wall surface and the adjacent channel wall surface segment ranges from 95° to 170°.

[0012] According to some embodiments of the present disclosure, the angle formed between the stepped wall surface and the adjacent channel wall surface segment ranges from 115° to 150°.

[0013] According to some embodiments of the present disclosure, a joint between the stepped wall surface and the channel wall surface segment is formed as a rounded portion.

[0014] According to some embodiments of the present disclosure, at least one of the plurality of channel wall surface segments extends vertically.

[0015] According to some embodiments of the present disclosure, an angle formed between the stepped wall surface of one of at least two heat dissipation channels and its respective adjacent channel wall surface segments is different from an angle formed between the stepped wall surface of another one of at least two heat dissipation channels and its respective adjacent channel wall surface segment; and / or each of the at least one heat dissipation channel has a plurality of stepped wall surfaces, and an angle formed between one of the plurality of stepped wall surfaces and its respective adjacent channel wall surface segment is different from an angle formed between another one of the plurality of stepped wall surfaces and its respective adjacent channel wall surface segment.

[0016] According to some exemplary embodiments of the present disclosure, at least part of the heat dissipation substrate is formed as a profiled structure adapted to a shape of the electrical control component, and the profiled structure conforms to a shape of a part of the electrical control component at a side of the electrical control component facing the heat dissipation substrate.

[0017] An electrical control box assembly according to an embodiment in a second aspect of the present disclosure includes: an electrical control box including a box body and an electrical control component disposed at the box body; and the heat dissipator according to any of the embodiments in the first aspect of the present disclosure. The heat dissipator is disposed at the electrical control box.

[0018] In the electrical control box assembly according to the embodiment of the present disclosure, the above heat dissipator is provided. The wall surface of the heat dissipation substrate of the heat dissipator facing the heat dissipation channel is designed to include the plurality of channel wall surface segments arranged sequentially from top to bottom. In addition, the stepped wall surface is connected between two adjacent channel wall surface segments. The obtuse angle is formed between the stepped wall surface and the channel wall surface segment. In this way, in the process of the airflow flowing through the heat dissipation channel of the heat dissipator, the obtuse angle formed between the stepped wall surface and the channel wall surface segment can reduce the obstructive effect of the stepped wall surface of the heat dissipation substrate on the airflow entering the heat dissipation channel, reducing the adverse effect of the stepped wall surface on the heat dissipation effect. Through being guided by the stepped wall surface, the airflow can smoothly flow through the heat dissipation channel of the heat dissipator, which can improve the heat dissipation effect of the heat dissipator. As a result, regardless of whether the outdoor fan in the fan chamber rotates clockwise or counterclockwise, the airflow can smoothly flow through the heat dissipation channel, enhancing the versatility of the heat dissipator.

[0019] According to some embodiments of the present disclosure, the heat dissipator and the box body are integrally formed.

[0020] According to some embodiments of the present disclosure, the electrical control box assembly includes a wire harness and a fixing structure. An end of the wire harness is located in the box body and electrically connected to the electrical control component. A wire outlet hole is formed on the box body, and the wire harness extends out of the box body through the wire outlet hole. A part of the wire harness located outside the box body is an external wire harness. The fixing structure is disposed at the box body and configured to fix the external wire harness.

[0021] According to some embodiments of the present disclosure, the fixing structure is detachably connected to the box body.

[0022] According to some embodiments of the present disclosure, the box body includes a box main body, and a box cover disposed at an open side of the box main body. The box cover includes a cover main body and an extension portion. The cover main body is opposite to the box main body, and the extension portion is connected to an outer peripheral side of the cover main body and protrudes beyond an outer peripheral side of the box main body. The wire outlet hole is formed in a peripheral wall of the box main body. The fixing structure is disposed at the extension portion.

[0023] According to some exemplary embodiments of the present disclosure, the extension portion has a mounting hole for mounting the fixing structure.

[0024] According to some exemplary embodiments of the present disclosure, the extension portion is connected to the cover main body at a side of the cover main body, and the wire outlet hole and the extension portion are located at a same side of the box body.

[0025] According to some exemplary embodiments of the present disclosure, a wiring space is defined between the extension portion and the peripheral wall of the box main body, and the external wire harness is routed along the wiring space; or the external wire harness is routed along a side of the box cover facing away from the box main body.

[0026] According to some embodiments of the present disclosure, the fixing structure includes at least one wire clamp. Each of the at least one wire clamp has a wire fixing hole for the external wire harness to pass through the wire fixing hole.

[0027] According to some exemplary embodiments of the present disclosure, each of the at least one wire clamp includes a wire fixing ring in a shape of an open ring and a locking portion connected to two circumferential ends of the wire fixing ring. The wire fixing hole is defined by the wire fixing ring. The locking portions positioned at the two circumferential ends of the wire fixing ring are connected to each other.

[0028] According to some exemplary embodiments of the present disclosure, the locking portions positioned at the two circumferential ends of the wire fixing ring are detachably connected to each other.

[0029] According to some exemplary embodiments of the present disclosure, the locking portions positioned at the two circumferential ends of the wire fixing ring are snap-fitted to each other or connected to each other by a fastener.

[0030] According to some exemplary embodiments of the present disclosure, the box body has a mounting hole. The wire fixing ring passes through the mounting hole in a circumferential direction of the fixing ring; or a fastener passes through the locking portion and the mounting hole.

[0031] According to some exemplary embodiments of the present disclosure, the wire harness includes a plurality of sub-harnesses having different functions. A plurality of wire clamps are provided and divided into a plurality of wire clamp groups, and each of the plurality of wire clamp groups includes at least one wire clamp. The number of the plurality of wire clamp groups is equal to the number of the plurality of sub-harnesses, and the plurality of wire clamp groups is in one-to-one correspondence with the plurality of sub-harnesses. The plurality of sub-harnesses having different functions are routed separately and each fixed by a corresponding one of the plurality of wire clamp groups.

[0032] According to some exemplary embodiments of the present disclosure, the external wire harness includes a water return bend segment located between the wire outlet hole and the fixing structure. When the electrical control box assembly is mounted to an outdoor unit, the water return bend segment bends downwards and a lowest part of the water return bend segment is lower than the wire outlet hole.

[0033] According to some exemplary embodiments of the present disclosure, the box body is filled with a potting structure.

[0034] An outdoor unit according to an embodiment in a third aspect of the present disclosure includes an outdoor unit housing having a fan chamber; an outdoor heat exchanger and an outdoor fan that are disposed in the fan chamber; a compressor assembly disposed in the outdoor unit housing; and the electrical control box assembly according to any of the embodiments in the second aspect of the present disclosure. The electrical control box assembly is disposed in the outdoor unit housing.

[0035] In the outdoor unit according to the embodiment of the present disclosure, the above electrical control box assembly is provided. The electrical control box assembly includes the heat dissipator. The wall surface of the heat dissipation substrate of the heat dissipator facing the heat dissipation channel is designed to include the plurality of channel wall surface segments arranged sequentially from top to bottom. In addition, the stepped wall surface is connected between two adjacent channel wall surface segments. The obtuse angle is formed between the stepped wall surface and the channel wall surface segment. In this way, in the process of the airflow flowing through the heat dissipation channel of the heat dissipator, the obtuse angle formed between the stepped wall surface and the channel wall surface segment can reduce the obstructive effect of the stepped wall surface of the heat dissipation substrate on the airflow entering the heat dissipation channel, reducing the adverse effect of the stepped wall surface on the heat dissipation effect. By being guided by the stepped wall surface, the airflow can smoothly flow through the heat dissipation channel of the heat dissipator, which can improve the heat dissipation effect of the heat dissipator. As a result, regardless of whether the outdoor fan in the fan chamber rotates clockwise or counterclockwise, the airflow can smoothly flow through the heat dissipation channel, enhancing the versatility of the heat dissipator.

[0036] According to some embodiments of the present disclosure, the outdoor unit housing has a compressor chamber. The compressor assembly is disposed in the compressor chamber. The fan chamber and the compressor chamber are arranged in a left-right direction. A middle partition plate is provided between the fan chamber and the compressor chamber. The electrical control box assembly is mounted at the middle partition plate, and the electrical control box is located in the compressor chamber. The channel wall surface of the at least one heat dissipation channel includes two channel wall surface segments arranged sequentially in the up-down direction. An upper channel wall surface segment of the two channel wall surface segments is a first channel wall surface segment, and a lower channel wall surface segment of the two channel wall surface segments is a second channel wall surface segment. In the up-down direction, a lower part of the heat dissipator is located closer to the outdoor fan than an upper part of the heat dissipator. In the left-right direction, the second channel wall surface segment is located closer to the compressor chamber than the first channel wall surface segment. The stepped wall surface between the second channel wall surface segment and the first channel wall surface segment extends obliquely upwards in a direction from the compressor chamber to the fan chamber.

[0037] A heating and ventilation device according to an embodiment in a fourth aspect of the present disclosure includes the outdoor unit according to any of the embodiments in the third aspect of the present disclosure.

[0038] In the heating and ventilation device according to the embodiment of the present disclosure, the above outdoor unit is provided. The outdoor unit includes the electrical control box assembly. The electrical control box assembly includes the heat dissipator. The wall surface of the heat dissipation substrate of the heat dissipator facing the heat dissipation channel is designed to include the plurality of channel wall surface segments arranged sequentially from top to bottom. In addition, the stepped wall surface is connected between two adjacent channel wall surface segments. The obtuse angle is formed between the stepped wall surface and the channel wall surface segment. In this way, in the process of the airflow flowing through the heat dissipation channel of the heat dissipator, the obtuse angle formed between the stepped wall surface and the channel wall surface segment can reduce the obstructive effect of the stepped wall surface of the heat dissipation substrate on the airflow entering the heat dissipation channel, reducing the adverse effect of the stepped wall surface on the heat dissipation effect. By being guided by the stepped wall surface, the airflow can smoothly flow through the heat dissipation channel of the heat dissipator, which can improve the heat dissipation effect of the heat dissipator. As a result, regardless of whether the outdoor fan in the fan chamber rotates clockwise or counterclockwise, the airflow can smoothly flow through the heat dissipation channel, enhancing the versatility of the heat dissipator.

[0039] Additional aspects and advantages of the present disclosure will be provided at least in part in the following description, or will become apparent at least in part from the following description, or can be learned from practicing of the present disclosure.BRIEF DESCRIPTION OF THE DRAWINGS

[0040] The above and / or additional aspects and advantages of the present disclosure will become more apparent and more understandable from the following description of embodiments taken in conjunction with the accompanying drawings. FIG. 1 is a schematic structural perspective view of a partial structure of an outdoor unit according to some embodiments of the present disclosure. FIG. 2 is a schematic structural perspective view of the partial structure of the outdoor unit in FIG. 1, viewed in another direction. FIG. 3 is a schematic structural perspective view of a partial structure of an outdoor unit according to other embodiments of the present disclosure. FIG. 4 is a schematic structural perspective view of a heat dissipator according to some embodiments of the present disclosure. FIG. 5 is a schematic structural perspective view of a partial structure of an electrical control box assembly in FIG. 4. FIG. 6 is a schematic structural perspective view of a partial structure of an electrical control box assembly in FIG. 4, viewed in another direction. FIG. 7 is an enlarged schematic view of part A in FIG. 6. FIG. 8 is an enlarged schematic view of part B in FIG. 6. FIG. 9 is a cross-sectional view of a partial structure of an electrical control box assembly in FIG. 4. FIG. 10 is a cross-sectional view of a partial structure of an electrical control box assembly in FIG. 4 at another position. FIG. 11 is a schematic structural perspective view of an electrical control box assembly according to other embodiments of the present disclosure. FIG. 12 is a schematic structural perspective view of the electrical control box assembly in FIG. 11, viewed in another direction. FIG. 13 is an enlarged view of part C in FIG. 12. FIG. 14 is a front view of the electrical control box assembly in FIG. 11. FIG. 15 is an enlarged view of part D in FIG. 14. FIG. 16 is a schematic structural perspective view of a wire clamp in FIG. 11. FIG. 17 is a schematic structural perspective view of an electrical control box assembly according to yet other embodiments of the present disclosure. FIG. 18 is a schematic structural perspective view of the electrical control box assembly in FIG. 17, viewed in another direction. FIG. 19 is an enlarged view of part E in FIG. 18. FIG. 20 is a schematic structural perspective view of a wire clamp in FIG. 17. Reference numerals of the accompanying drawings:

[0041] 100: heat dissipator; 10: heat dissipation substrate; 101: channel wall surface; 102: first channel wall surface segment; 103: stepped wall surface; 104: second channel wall surface segment; 105: rounded portion; 106: profiled structure; 11: heat dissipation fin; 12: heat dissipation channel; 13: avoidance surface; 200: outdoor unit; 20: electrical control box assembly; 201: electrical control box; 202: box body; 111: box main body; 112: box cover; 1121: cover main body; 1122: extension portion; 1123: mounting hole; 13: wire outlet hole; 21: outdoor unit housing; 211: compressor chamber; 212: fan chamber; 213: middle partition plate; 22: outdoor heat exchanger; 23: outdoor fan; 25: first air guide cover; 251: first air guide opening; 26: second air guide cover; 2: wire harness; 31: wire clamp; 311: wire fixing hole; 312: wire fixing ring; 313: locking portion; 4: wiring space; 5: water return bend segment; 6: external wire harness; 7: sub-harness. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0042] Embodiments of the present disclosure will be described in detail below with reference to examples thereof as illustrated in the accompanying drawings, throughout which same or similar elements, or elements having same or similar functions, are denoted by same or similar reference numerals. The embodiments described below with reference to the drawings are illustrative only, and are intended to explain, rather than limit, the present disclosure.

[0043] A heat dissipator 100, an electrical control box assembly 20, an outdoor unit 200, and a heating and ventilation device according to the embodiments of the present disclosure are described below with reference to FIG. 1 to FIG. 10.

[0044] As illustrated in FIG. 1 to FIG. 10, the heat dissipator 100 according to an embodiment in a first aspect of the present disclosure is used for the electrical control box assembly 20. The electrical control box assembly 20 is applied in the outdoor unit 200. The heat dissipator 100 is at least partially located in a fan chamber 212 of the outdoor unit 200. For example, the heat dissipator 100 may be partially located in the fan chamber 212, or the heat dissipator 100 may be entirely located in the fan chamber 212. An outdoor fan 23 is provided in the fan chamber 212. During an operation of the outdoor fan 23, flow of an airflow in the fan chamber 212 can be utilized to quickly carry away heat from the heat dissipator 100, improving an overall heat dissipation effect of the heat dissipator 100.

[0045] As illustrated in FIG. 4 to FIG. 10, the heat dissipator 100 includes a heat dissipation substrate 10 and a plurality of heat dissipation fins 11 disposed on the heat dissipation substrate 10. For example, the plurality of heat dissipation fins 11 are arranged at uniform intervals in a front-rear direction. Providing the plurality of heat dissipation fins 11 can increase a heat exchange area of the heat dissipator 100 and improve a heat exchange efficiency of the heat dissipator 100. One or more heat dissipation channels 12 are defined between the plurality of heat dissipation fins 11 and the heat dissipation substrate 10. Each of the one or more heat dissipation channels 12 extends in an up-down direction. The airflow can flow through the heat dissipation channel 12 in the up-down direction. In a process of flowing through the heat dissipation channel 12, the airflow can exchange heat with the adjacent heat dissipation fin 11. When flowing out of the heat dissipation channel 12, the airflow can carry away the heat from the heat dissipation fin 11, achieving a heat dissipation effect of the airflow on the heat dissipator 100. For example, at least one heat dissipation channel 12 is defined between the plurality of heat dissipation fins 11 and the heat dissipation substrate 10. When a plurality of heat dissipation channels 12 are formed, the plurality of heat dissipation channels 12 are arranged at intervals in the front-rear direction.

[0046] The electrical control box assembly 20 includes an electrical control component. The heat dissipation substrate 10 is adapted to be thermally connected to or in thermal contact with the electrical control component of the electrical control box assembly 20. The heat dissipator 100 and the electrical control component may be in direct contact with each other to form thermal contact. A thermally conductive medium may also be provided between the heat dissipator 100 and the electrical control component to form a thermal connection between the heat dissipator 100 and the electrical control component. For example, a thermally conductive adhesive is provided between the heat dissipator 100 and the electrical control component. During an operation of the outdoor unit 200, the heat generated by the electrical control component in operation is transferred to the heat dissipator 100 through the heat dissipation substrate 10. The heat dissipator 100 can dissipate the heat, achieving an effect of dissipating the heat from the electrical control component and cooling the electrical control component through the heat dissipator 100.

[0047] A wall surface of the heat dissipation substrate 10 facing the one or more heat dissipation channels 12 is a channel wall surface 101. The channel wall surface 101 for at least one heat dissipation channels 12 includes a plurality of channel wall surface segments arranged sequentially in the up-down direction. For example, the heat dissipator 100 has one heat dissipation channel 12, and the channel wall surface 101 for the one heat dissipation channel 12 includes a plurality of channel wall surface segments arranged sequentially in the up-down direction. For example, the heat dissipator 100 has a plurality of heat dissipation channels 12. The channel wall surface 101 for one of the plurality of heat dissipation channels 12 includes a plurality of channel wall surface segments arranged in the up-down direction, or the channel wall surfaces 101 for at least two of the plurality of heat dissipation channels 12 include a plurality of channel wall surface segments arranged sequentially in the up-down direction. A stepped wall surface 103 is connected between two adjacent channel wall surface segments. An angle is formed between the stepped wall surface 103 and the channel wall surface segment. By forming the angle between the stepped wall surface 103 and the channel wall surface segment, a structure of the heat dissipation substrate 10 can better match use of the electrical control component, facilitating a formation of a satisfactory thermal connection or thermal contact between the heat dissipation substrate 10 and the electrical control component of the electrical control box assembly 20.

[0048] The angle between the stepped wall surface 103 and the channel wall surface segment is an obtuse angle. By forming the obtuse angle between the stepped wall surface 103 and the channel wall surface segment, in a process of the airflow flowing through the heat dissipation channel 12 of the heat dissipator 100, this obtuse angle formed between the stepped wall surface 103 and the channel wall surface segment can reduce a wind resistance of the stepped wall surface 103 to the airflow flowing in the heat dissipation channel 12, which enables the airflow to flow more smoothly in the heat dissipation channel 12. As a result, the heat dissipation effect of the airflow on the heat dissipator 100 becomes better. Thus, a heat dissipation efficiency of the heat dissipator 100 for the electrical control component can be improved. In this way, regardless of whether the outdoor fan 23 drives the airflow to flow through the heat dissipation air duct from top to bottom or flow through the heat dissipation channel 12 from bottom to top during a rotation of the outdoor fan 23, the airflow can smoothly flow through the heat dissipation channel 12.

[0049] For example, the channel wall surface 101 of the heat dissipator 100 includes a first channel wall surface segment 102 and a second channel wall surface segment 104 that are arranged sequentially in the up-down direction. An angle α1 is formed between the first channel wall surface segment 102 and the stepped wall surface 103. An angle α2 is formed between the second channel wall surface segment 104 and the stepped wall surface 103. Both the angle α1 and the angle α2 are obtuse angles. When the heat dissipator 100 is mounted to the outdoor unit 200, the first channel wall surface segment 102 is located closer to the outdoor fan 23 than the second channel wall surface segment 104. As illustrated in FIG. 1 and FIG. 2, during the operation of the outdoor unit 200, the outdoor fan 23 rotates in a clockwise direction. The outdoor fan 23 drives the airflow to flow through the heat dissipation air duct from top to bottom. After entering the heat dissipation channel 12, the airflow sequentially and smoothly flows through the first channel wall surface segment 102, the stepped wall surface 103, and the second channel wall surface segment 104 from top to bottom. The airflow smoothly flows through the heat dissipation channel 12 and can carry away the heat from the heat dissipator 100 through heat exchange with the heat dissipation fins 11. Thus, the heat dissipation effect of the airflow on the heat dissipator 100 is realized. As illustrated in FIG. 3, during the operation of the outdoor unit 200, the outdoor fan 23 rotates in a counterclockwise direction. The outdoor fan 23 drives the airflow to flow through the heat dissipation channel 12 from bottom to top. After entering the heat dissipation channel 12, the airflow sequentially flows through the second channel wall surface segment 104, the stepped wall surface 103, and the first channel wall surface segment 102 from bottom to top. The obtuse angle α1 between the first channel wall surface segment 102 and the stepped wall surface 103 and the obtuse angle α2 between the second channel wall surface segment 104 and the stepped wall surface 103 can reduce the wind resistance of the stepped wall surface 103 to the airflow flowing in the heat dissipation channel 12. Through being guided by the stepped wall surface 103, the airflow can smoothly flow to the first wall surface segment through the second wall surface segment, reducing an adverse effect of the stepped wall surface 103 on the heat dissipation effect. Thus, versatility of the heat dissipator 100 with outdoor units 200 having outdoor fans 23 with different rotation directions can be enhanced.

[0050] In the heat dissipator 100 according to the embodiment of the present disclosure, the wall surface of the heat dissipation substrate 10 of the heat dissipator 100 facing the heat dissipation channel 12 is arranged to include the plurality of channel wall surface segments arranged sequentially from top to bottom. In addition, the stepped wall surface 103 is connected between two adjacent channel wall surface segments. The obtuse angle is formed between the stepped wall surface 103 and the channel wall surface segment. In this way, in the process of the airflow flowing through the heat dissipation channel 12 of the heat dissipator 100, the obtuse angle formed between the stepped wall surface 103 and the channel wall surface segment can reduce an obstructive effect of the stepped wall surface 103 of the heat dissipation substrate 10 on the airflow entering the heat dissipation channel 12, reducing the adverse effect of the stepped wall surface 103 on the heat dissipation effect. Through being guided by the stepped wall surface 103, the airflow can smoothly flow through the heat dissipation channel 12 of the heat dissipator 100, which can improve the heat dissipation effect of the heat dissipator 100. As a result, regardless of whether the outdoor fan 23 in the fan chamber 212 rotates clockwise or counterclockwise, the airflow can smoothly flow through the heat dissipation channel 12, enhancing the versatility of the heat dissipator 100.

[0051] As illustrated in FIG. 6 to FIG. 10, according to some embodiments of the present disclosure, an angle is formed between the stepped wall surface 103 and the channel wall surface segment. The angle ranges from 95° to 170°. For example, the angle between the stepped wall surface 103 and each channel wall surface segment is 95°, 115°, 125°, 135°, 145°, 150°, 170°, or the like. When the angle between the stepped wall surface 103 and the channel wall surface segment is less than 95°, an obstruction of the channel wall surface 101 to the airflow flowing in the heat dissipation channel 12 cannot be effectively reduced, which is not conducive to improving the heat dissipation effect of the heat dissipator 100. When the angle between the stepped wall surface 103 and the channel wall surface segment is greater than 170°, a length of the stepped wall surface 103 needs to be extended to connect the plurality of channel wall surface segments to each other. In this case, since a lower part of the stepped wall surface 103 needs to be filled with more molding material during die-casting molding of the heat dissipator 100, a lightweight design of the heat dissipator 100 is hindered.

[0052] As illustrated in FIG. 6 to FIG. 10, according to some exemplary embodiments of the present disclosure, an angle is formed between the stepped wall surface 103 and the channel wall surface segment. The angle ranges from 115° to 150°. For example, the angle between the stepped wall surface 103 and each channel wall surface segment is 115°, 120°, 125°, 130°, 135°, 145°, 150°, or the like. When the angle between the stepped wall surface 103 and the channel wall surface segment is less than 115°, the obstruction of the channel wall surface 101 to the airflow flowing in the heat dissipation channel 12 cannot be effectively reduced, which is not conducive to improving the heat dissipation effect of the heat dissipator 100. When the angle between the stepped wall surface 103 and the channel wall surface segment is greater than 150°, the length of the stepped wall surface 103 needs to be extended to connect the plurality of channel wall surface segments to each other. In this case, since the lower part of the stepped wall surface 103 needs to be filled with more molding material during the die-casting molding of the heat dissipator 100, the lightweight design of the heat dissipator 100 is hindered.

[0053] As illustrated in FIG. 6 to FIG. 10, according to some embodiments of the present disclosure, a joint between the stepped wall surface 103 and the channel wall surface segment is formed as a rounded portion 105. By forming the joint as the rounded portion 105, the rounded portion 105 provides a guiding effect for the airflow flowing from the stepped wall surface 103 to the channel wall surface segment, enabling the airflow in the heat dissipation channel 12 to flow more smoothly. As a result, a wind resistance of the channel wall surface 101 to the airflow is reduced, thereby reducing noises generated during the flow of the airflow.

[0054] As illustrated in FIG. 4 to FIG. 10, according to some embodiments of the present disclosure, at least one of the plurality of channel wall surface segments extends vertically in such a manner that an extension direction of the channel wall surface 101 better conforms to a flow direction of the airflow in the fan chamber 212. Therefore, the flow of the airflow into the heat dissipation channel 12 is facilitated, improving the heat dissipation effect of the heat dissipator 100. For example, a rotation axis of the outdoor fan 23 extends in the front-rear direction, and the heat dissipation channel 12 extends vertically. An extension direction of the heat dissipation channel 12 is perpendicular to an extension direction of the rotation axis of the outdoor fan 23. When the outdoor fan 23 rotates about the rotation axis, the airflow in the fan chamber 212 is driven to flow in a tangential direction of the rotation of the outdoor fan 23. When the airflow flows through the heat dissipator 100, the flow of the airflow into the heat dissipation channel 12 in the extension direction of the heat dissipation channel 12 is facilitated, optimizing the heat dissipation effect of the outdoor fan 23 on the heat dissipator 100.

[0055] As illustrated in FIG. 6 to FIG. 10, according to some embodiments of the present disclosure, an angle formed between the stepped wall surface 103 of one of at least two heat dissipation channels 12 and its respective adjacent channel wall surface segment is different from an angle formed between the stepped wall surface 103 of another one of the at least two heat dissipation channels 12 and its respective adjacent channel wall surface segment. To maintain the satisfactory thermal connection or thermal contact between the heat dissipation substrate 10 and the electrical control component of the electrical control box assembly 20, the heat dissipation substrate 10 and the electrical control component need to be designed to match each other. By setting angles between the stepped wall surfaces 103 of different heat dissipation channels 12 and their respective channel wall surface segments to be different from each other, a purpose of designing the heat dissipation substrate 10 and the electrical control component to match each other can be better achieved. The angle between the stepped wall surface 103 and the channel wall surface segment can reduce a wind resistance effect of the stepped wall surface 103 on the airflow in the heat dissipation channel 12, enabling the heat dissipator 100 to achieve a satisfactory heat dissipation effect. In addition, in this way, regardless of whether the outdoor fan 23 of the fan chamber 212 rotates clockwise or counterclockwise, the airflow can smoothly flow through the heat dissipation channel 12.

[0056] According to some embodiments of the present disclosure, when a single heat dissipation channel 12 has a plurality of stepped wall surfaces 103, an angle formed between one of the plurality of stepped wall surfaces 103 and its respective adjacent channel wall surface segment is different from an angle formed between another one of the plurality of stepped wall surfaces 103 and its respective adjacent channel wall surface segment. To maintain the satisfactory thermal connection or thermal contact between the heat dissipation substrate 10 and the electrical control component of the electrical control box assembly 20, the heat dissipation substrate 10 and the electrical control component need to be designed to match each other. By setting angles between different stepped wall surfaces 103 of one heat dissipation channel 12 and their respective channel wall surface segments to be different from each other, the purpose of designing the heat dissipation substrate 10 and the electrical control component to match each other can be better achieved. The angle between the stepped wall surface 103 and the channel wall surface segment can reduce the wind resistance effect of the stepped wall surface 103 on the airflow in the heat dissipation channel 12, enabling the heat dissipator 100 to achieve the satisfactory heat dissipation effect. In addition, in this way, regardless of whether the outdoor fan 23 of the fan chamber 212 rotates clockwise or counterclockwise, the airflow can smoothly flow through the heat dissipation channel 12.

[0057] According to some exemplary embodiments of the present disclosure, at least part of the heat dissipation substrate 10 is formed as a profiled structure 106 adapted to a shape of the electrical control component. The profiled structure 106 conforms to a shape of a part of the electrical control component at a side of the electrical control component facing the heat dissipation substrate 10. The profiled structure 106 can enable a short distance or direct contact between the heat dissipation substrate 10 and the electrical control component, to form the satisfactory thermal connection or thermal contact between the heat dissipation substrate 10 and the electrical control component. As a result, a thermal resistance between the heat dissipation substrate 10 and the electrical control component is reduced, improving a thermal conduction efficiency between the heat dissipation substrate 10 and the electrical control component. Thus, heat dissipation and cooling of the electrical control component by the heat dissipator 100 can be facilitated, improving the overall heat dissipation effect for the electrical control component.

[0058] For example, when the electrical control component is in an operation state, a temperature of the electrical control component rises due to heat generation. Since the profiled structure 106 enables the short distance between the heat dissipation substrate 10 and the electrical control component, the thermally conductive medium (e.g., the thermally conductive adhesive) may be provided between the heat dissipation substrate 10 and the electrical control component, facilitating a formation of the satisfactory thermal connection between the heat dissipation substrate 10 and the electrical control component. Thus, the heat of the electrical control component can be quickly transferred to the heat dissipation substrate 10, which is conducive to improving a heat dissipation and cooling efficiency of the heat dissipator 100 for the electrical control component, better ensuring normal use of the electrical control component.

[0059] For example, when the electrical control component is in the operation state, the temperature of the electrical control component rises due to the heat generation. At least part of the electrical control component is in direct contact with the profiled structure 106, facilitating the satisfactory thermal contact between the heat dissipation substrate 10 and the electrical control component. For example, a part of the electrical control component is in contact with the profiled structure 106, or the entire electrical control component is in direct contact with the profiled structure 106. Since a thermal conduction efficiency of the airflow is less satisfactory compared with the thermal conduction efficiency of the heat dissipation substrate 10, the at least part of the electrical control component being in direct contact with the profiled structure 106 allows the heat of the electrical control component to be transferred to the heat dissipator 100 through the profiled structure 106, which realizes rapid cooling of the electrical control component by the heat dissipator 100, ensuring service performance of the electrical control component.

[0060] As illustrated in FIG. 1 to FIG. 3, an electrical control box assembly 20 according to an embodiment in a second aspect of the present disclosure includes an electrical control box 201 and the above heat dissipator 100. The electrical control box 201 includes a box body 202 and the electrical control component disposed at the box body 202. The heat dissipator 100 is disposed at the electrical control box 201.

[0061] In the electrical control box assembly 20 according to the embodiment of the present disclosure, the above heat dissipator 100 is provided. The wall surface of the heat dissipation substrate 10 of the heat dissipator 100 facing the heat dissipation channel 12 includes the plurality of channel wall surface segments arranged sequentially from top to bottom. In addition, the stepped wall surface 103 is connected between two adjacent channel wall surface segments. The obtuse angle is formed between the stepped wall surface 103 and the channel wall surface segment. In this way, in the process of the airflow flowing through the heat dissipation channel 12 of the heat dissipator 100, the obtuse angle formed between the stepped wall surface 103 and the channel wall surface segment can reduce the obstructive effect of the stepped wall surface 103 of the heat dissipation substrate 10 on the airflow entering the heat dissipation channel 12, reducing the adverse effect of the stepped wall surface 103 on the heat dissipation effect. Through being guided by the stepped wall surface 103, the airflow can smoothly flow through the heat dissipation channel 12 of the heat dissipator 100, which can improve the heat dissipation effect of the heat dissipator 100. As a result, regardless of whether the outdoor fan 23 in the fan chamber 212 rotates clockwise or counterclockwise, the airflow can smoothly flow through the heat dissipation channel 12, enhancing the versatility of the heat dissipator 100.

[0062] According to some embodiments of the present disclosure, the heat dissipator 100 and the box body 202 are integrally formed. When the temperature of the electrical control component in the box body 202 rises, the heat of the electrical control component is transferred to the box body 202. The heat dissipator 100 and the box body 202 are integrally formed, and the heat dissipation substrate 10 of the heat dissipator 100 is formed as a part of the box body 202 of the electrical control box 201, which can enable the heat of the box body 202 to be directly transferred to the heat dissipator 100, reducing a thermal resistance between the box body 202 and the heat dissipator 100. Thus, the heat dissipator 100 can have a better heat dissipation effect on the electrical control box 201. In addition, by integrally forming the heat dissipator 100 and the box body 202, an overall assembly efficiency can be improved, and thus overall structural strength can be increased.

[0063] As illustrated in FIG. 11 to FIG. 20, according to some embodiments of the present disclosure, the electrical control box assembly 20 can be used for an outdoor unit of a heating and ventilation device. The electrical control box assembly 20 includes the electrical control box 201, a wire harness 2, and a fixing structure. The fixing structure is disposed at the electrical control box 201.

[0064] The electrical control box 201 includes the box body 202 and the electrical control component disposed at the box body 202. When the electrical control box assembly 20 is disposed in the outdoor unit, the electrical control component can be used to control the operations of other components in the outdoor unit. A wire outlet hole 13 for the wire harness 2 to extend out of the box body 202 is formed on the box body 202. An end of the wire harness 2 is located in the box body 202 and electrically connected to the electrical control component. For example, a connection terminal may be disposed at the end of the wire harness 2. Through a connection between the connection terminal at the end of the wire harness 2 and the electrical control component in the box body 202, an electrical connection between the wire harness 2 and the electrical control component is achieved. The wire harness 2 extends out of the box body 202 through the wire outlet hole 13. The other end of the wire harness 2 is located outside the box body 202. In this way, the wire harness 2 extends from an inside of the box body 202 to an outside of the box body 202. A part of the wire harness 2 located outside the box body 202 is an external wire harness 6.

[0065] When the electrical control box assembly 20 is mounted in the outdoor unit, the other end of the wire harness 2 may be electrically connected to other components of the outdoor unit. For example, the other end of the wire harness 2 may be electrically connected to a compressor, a fan, etc. in the outdoor unit.

[0066] The fixing structure is disposed at the box body 202. For example, the fixing structure is disposed at an outer wall of the box body 202. The fixing structure is configured to fix the external wire harness 6. Through the fixing structure, the external wire harness 6 and the box body 202 may be relatively fixed to reduce an amount of movement of the external wire harness 6 relative to the electrical control box 201 when the external wire harness 6 is subjected to a force. As a result, it is possible to reduce a possibility that an electrical connection relationship between the wire harness 2 in the box body 202 and the electrical control component becomes problematic due to inadvertent pulling of the external wire harness 6 during transportation, disassembly, or assembly of the electrical control box assembly 20. In this way, additional maintenance procedures or scrapping of the electrical control box assembly 20 can be reduced or avoided. In addition, by providing the fixing structure to relatively fix the external wire harness 6 to the box body 202, wear on the wire harness 2 caused by a friction between the external wire harness 6 and other structures during the transportation, the disassembly, or the assembly of the electrical control box assembly 20 can also be reduced. For example, frictional wear between the external wire harness 6 and the box body 202 can be reduced. Thus, a risk of damage to the electrical control box assembly 20 can be reduced.

[0067] In some embodiments of the present disclosure, the box body 202 may be filled with a potting structure. Filling the box body 202 with the potting structure can improve sealing performance of the electrical control box 201. As a result, safety performance, dustproof performance, and waterproof performance of the electrical control box assembly 20 can be improved. For example, when the electrical control box assembly 20 is applied in the outdoor unit, in a case where a refrigerant system of the outdoor unit adopts a flammable refrigerant, flammable and explosive gases exist in an ambient environment of the electrical control box assembly 20 when a refrigerant leakage occurs in the refrigerant system of the outdoor unit. Since the electrical control box 201 has satisfactory sealing performance, the flammable and explosive gases in the ambient environment of the electrical control box assembly 20 can be prevented from entering the electrical control box 201, which might otherwise cause safety accidents such as explosions.

[0068] For the electrical control box assembly 20 in which the box body 202 is filled with the potting structure, since full potting is employed, the electrical control box assembly 20 is scrapped and unable to be repaired in a case where the electrical connection relationship between the wire harness 2 in the box body 202 and the electrical control component becomes problematic due to the inadvertent pulling of the external wire harness 6. In this case, the electrical control box assembly 20 can only be scrapped. For the electrical control box assembly 20 of the present disclosure, by arranging at the box body 202 the fixing structure for fixing the external wire harness 6 located outside the box body 202, a scrap rate of the electrical control box assembly 20 can be avoided or reduced.

[0069] In the electrical control box assembly 20 according to the embodiment of the present disclosure, the fixing structure is provided. Disposing the fixing structure at the box body 202 may fix the external wire harness 6 relative to the box body 202, to reduce an amount of movement of the external wire harness 6 relative to the box body 202 when the external wire harness 6 is subjected to the force. In this way, the electrical connection relationship between the wire harness 2 in the box body 202 and the electrical control component is prevented from becoming problematic due to the inadvertent pulling of the external wire harness 6 during the transportation, the disassembly, or the assembly of the electrical control box assembly 20. Also, the wear on the wire harness 2 caused by the friction between the external wire harness 6 and other structures during the transportation, the disassembly, or the assembly of the electrical control box assembly 20 can be reduced. Thus, the risk of damage to the electrical control box assembly 20 can be reduced.

[0070] According to some embodiments of the present disclosure, as illustrated in FIG. 12 to FIG. 15 and FIG. 18 to FIG. 20, the fixing structure is detachably connected to the box body 202. For example, the fixing structure may be mounted to the box body 202 by means of fastening, snap-fitting, or the like. By configuring the fixing structure and the box body 202 to be detachably connected to each other, a replacement of the fixing structure is facilitated, and use of different fixing structures for different electrical control boxes 201 and wire harnesses 2 to realize fixation can be facilitated.

[0071] According to some embodiments of the present disclosure, as illustrated in FIG. 12, FIG. 14, FIG. 17, and FIG. 18, the box body 202 includes a box main body 111 and a box cover 112. An accommodation space is formed inside the box main body 111. The box main body 111 has an open side. For example, the electrical control component is accommodated and disposed inside the box main body 111. The box cover 112 covers the box main body 111 at the open side of the box main body 111. The box cover 112 includes a cover main body 1121 and an extension portion 1122. The cover main body 1121 is opposite to the box main body 111 and covers the box main body 111 at the open side of the box main body 111. The extension portion 1122 is connected to an outer peripheral side of the cover main body 1121 and protrudes beyond an outer peripheral side of the box main body 111. The wire outlet hole 13 is formed in a peripheral wall of the box main body 111. The fixing structure is disposed at the extension portion 1122.

[0072] By arranging the fixing structure at the extension portion 1122 of the box cover 112, a part of the fixing structure connected to the box cover 112 is spaced apart from the accommodation space inside the box main body 111. In this way, the part of the fixing structure connected to the box cover 112 is prevented from facing the accommodation space inside the box main body 111, reducing or avoiding an adverse effect on the electrical control component inside the box body 202 caused by an arrangement of the fixing structure. For example, a fastener for the fixing structure can be prevented from extending into an accommodation cavity of the box body 202 and causing interference with or damage to the electrical control component, or a mounting hole 1123 formed on the box body 202 for mounting the fixing structure can be prevented from being in communication with the accommodation cavity of the box body 202 and reducing the sealing performance of the electrical control box 201.

[0073] According to some exemplary embodiments of the present disclosure, as illustrated in FIG. 17 to FIG. 19, the extension portion 1122 has the mounting hole 1123 for mounting the fixing structure. For example, by passing the fastener through the fixing structure and the mounting hole 1123, the fixing structure is detachably mounted at the extension portion 1122 of the box body 202. By forming the mounting hole 1123 for mounting the fixing structure on the extension portion 1122 of the box cover 112, the mounting hole 1123 formed on the box body 202 for mounting the fixing structure can be prevented from being in communication with the accommodation cavity of the box body 202 and reducing the sealing performance of the electrical control box 201, improving the sealing performance of the box main body 111. Thus, service performance and safety performance of the electrical control box 201 can be improved.

[0074] According to some exemplary embodiments of the present disclosure, as illustrated in FIG. 17 to FIG. 19, the extension portion 1122 is connected to the cover main body 1121 at a side of the cover main body 1121, and the wire outlet hole 13 and the extension portion 1122 are located at a same side of the box body 202. In this way, the external wire harness 6 extending out of the box body 202 through the wire outlet hole 13 is adjacent to the extension portion 1122, and the fixing structure is disposed at the extension portion 1122, facilitating relative fixation of the external wire harness 6 and the box body 202 through the fixing structure, and improving a fixing effect of the fixing structure on the external wire harness 6.

[0075] According to some exemplary embodiments of the present disclosure, as illustrated in FIG. 17 and FIG. 18, a wiring space 4 is defined between the extension portion 1122 and the peripheral wall of the box main body 111, and the external wire harness 6 is routed along the wiring space 4. By defining the wiring space 4 between the extension portion 1122 and the peripheral wall of the box main body 111, a reasonable arrangement of routing or the like of the external wire harness 6 can be facilitated. In addition, when the wire harness 2 is arranged in the wiring space 4, the extension portion 1122 and the peripheral wall of the box main body 111 that form the wiring space 4 can protect the external wire harness 6 located in the wiring space 4, reducing unnecessary wear of the external wire harness 6. Further, the wiring space 4 can be fully utilized, making a structure of the electrical control box assembly 20 more compact as a whole.

[0076] According to some exemplary embodiments of the present disclosure, as illustrated in FIG. 12, the external wire harness 6 is routed along a side of the box cover 112 facing away from the box main body 111. That is, the external wire harness 6 is routed along a side facing the box cover 112, facilitating the reasonable arrangement of the routing or the like of the external wire harness 6.

[0077] According to some embodiments of the present disclosure, as illustrated in FIG. 12 to FIG. 20, the fixing structure includes a plurality of wire clamps 31 arranged at intervals, and each of the plurality of wire clamps 31 has a wire fixing hole 311 for the external wire harness 6 to pass through the wire fixing hole 311. By passing the external wire harness 6 through the wire fixing hole 311 and disposing the fixing structure at the box body 202, the external wire harness 6 may be relatively fixed to the box body 202.

[0078] One or more wire clamps 31 are provided. When the plurality of wire clamps 31 are provided, the plurality of wire clamps 31 are arranged at intervals. By configuring the fixing structure to include the plurality of wire clamps 31 arranged at intervals, the fixing effect of the fixing structure on the external wire harness 6 can be improved, to reduce the amount of movement of the external wire harness 6 relative to the box body 202 to a greater extent, better preventing the electrical connection relationship between the wire harness 2 in the box body 202 and the electrical control component from becoming problematic due to the inadvertent pulling of the external wire harness 6 during the transportation, the disassembly, or the assembly of the electrical control box assembly 20.

[0079] It should be noted that "plurality of" described in the present disclosure refers to two or more than two.

[0080] According to some exemplary embodiments of the present disclosure, as illustrated in FIG. 16 and FIG. 20, the wire clamp 31 includes a wire fixing ring 312 and a locking portion 313. The wire fixing ring 312 is in a shape of an open ring. The wire fixing hole 311 is defined at an inner circumferential side of the wire fixing ring 312. The locking portion 313 is connected to two circumferential ends of the wire fixing ring 312. That is, the two circumferential ends of the wire fixing ring 312 are each connected to the locking portion 313. The locking portions 313 positioned at the two circumferential ends of the wire fixing ring 312 are connected to each other. By passing the external wire harness 6 through the wire fixing hole 311, and connecting the locking portions 313 positioned at the two circumferential ends of the wire fixing ring 312 to each other, the wire fixing ring 312 defining the wire fixing hole 311 exerts a fixing effect on the external wire harness 6, which can reduce the amount of movement of the external wire harness 6 relative to the box body 202, preventing the electrical connection relationship between the wire harness 2 in the box body 202 and the electrical control component from becoming problematic due to the inadvertent pulling of the external wire harness 6 during the transportation, the disassembly, or the assembly of the electrical control box assembly 20.

[0081] According to some exemplary embodiments of the present disclosure, as illustrated in FIG. 16 and FIG. 20, the locking portions 313 positioned at the two circumferential ends of the wire fixing ring 312 are detachably connected to each other. For example, the locking portions 313 positioned at the two circumferential ends of the wire fixing ring 312 may be connected to each other by a fastener, or the locking portions 313 positioned at the two circumferential ends of the wire fixing ring 312 may be snap-fitted to each other. By enabling the locking portions 313 positioned at the two circumferential ends of the wire fixing ring 312 to be detachably connected to each other, the external wire harness 6 easily passes through the wire fixing ring 312 for fixation, or release and removal of the external wire harness 6 from the wire fixing ring 312 can be facilitated.

[0082] According to some exemplary embodiments of the present disclosure, as illustrated in FIG. 18 to FIG. 20, the box body 202 has the mounting hole 1123. The wire fixing ring 312 passes through the mounting hole 1123 in a circumferential direction of the fixing ring. In this way, the fastener can be omitted, and the external wire harness 6 is fixed through binding the external wire harness 6 by the wire clamp 31.

[0083] According to some exemplary embodiments of the present disclosure, as illustrated in FIG. 12 to FIG. 15, the fastener passes through the locking portion 313 and the mounting hole 1123. By passing the fastener through the locking portion 313 and the mounting hole 1123, the external wire harness 6 may be fixed relative to the wire clamp 31. By fixing the wire clamp 31 to the box body 202, the external wire harness 6 may be fixed to the box body 202. The manner of fixing by the fastener is simple and easy to operate.

[0084] In some exemplary embodiments of the present disclosure, the locking portions 313 positioned at the two circumferential ends of the wire fixing ring 312 and the mounting hole 1123 may be mounted and connected to each other by one fastener. That is, the fastener passes through the locking portions 313 positioned at the two circumferential ends of the wire fixing ring 312 and the mounting hole 1123, which can not only connect the locking portions 313 positioned at the two circumferential ends of the wire fixing ring 312, but also fix the wire clamp 31 to the box body 202, reducing the number of fasteners.

[0085] According to some exemplary embodiments of the present disclosure, as illustrated in FIG. 11 to FIG. 15, the wire harness 2 includes a plurality of sub-harnesses 7 having different functions. A plurality of wire clamps 31 are provided and divided into a plurality of wire clamp groups. Each of the plurality of wire clamp groups includes at least one wire clamp 31. The number of the plurality of wire clamp groups is equal to the number of the plurality of sub-harnesses 7. The plurality of wire clamp groups are in one-to-one correspondence with the plurality of sub-harnesses 7. The plurality of sub-harnesses 7 having different functions are routed separately and each fixed by a corresponding one of the plurality of wire clamp groups. By routing the plurality of sub-harnesses 7 having different functions separately and fixing the plurality of sub-harnesses 7 by corresponding wire clamp groups, mutual interference between the plurality of sub-harnesses 7 having different functions can be reduced or avoided, preventing service performance of the electrical control box assembly 20 from being affected due to the mutual interference.

[0086] According to some exemplary embodiments of the present disclosure, as illustrated in FIG. 11 to FIG. 15, the external wire harness 6 includes a water return bend segment 5 located between the wire outlet hole 13 and the fixing structure. When the electrical control box assembly 20 is mounted to the outdoor unit, the water return bend segment 5 bends downwards and a lowest part of the water return bend segment 5 is lower than the wire outlet hole 13. With the water return bend segment 5, by enabling the water return bend segment 5 to bend downwards and the lowest part of the water return bend segment 5 to be lower than the wire outlet hole 13, a liquid (e.g., condensed water) attached to the external wire harness 6 can gather along the water return bend segment 5 towards the lowest part of the water return bend segment 5. In this way, the liquid on the external wire harness 6 is prevented from entering the box body 202 through the wire outlet hole 13, avoiding an adverse effect on the electrical control component and the like in the box body 202.

[0087] As illustrated in FIG. 1 to FIG. 3, an outdoor unit 200 according to an embodiment in a third aspect of the present disclosure includes an outdoor unit housing 21, an outdoor heat exchanger 22, an outdoor fan 23, a compressor assembly, and the above electrical control box assembly 20. The electrical control box assembly 20 includes the above heat dissipator 100. The outdoor heat exchanger 22, the outdoor fan 23, the compressor assembly, and the electrical control box assembly 20 are disposed in the outdoor unit housing 21. The outdoor unit housing 21 has a fan chamber 212. The outdoor heat exchanger 22 and the outdoor fan 23 are disposed in the fan chamber 212.

[0088] In the outdoor unit 200 according to the embodiment of the present disclosure, the above electrical control box assembly 20 is provided. The electrical control box assembly 20 includes the heat dissipator 100. The wall surface of the heat dissipation substrate 10 of the heat dissipator 100 facing the heat dissipation channel 12 includes the plurality of channel wall surface segments arranged sequentially from top to bottom. In addition, the stepped wall surface 103 is connected between two adjacent channel wall surface segments. The obtuse angle is formed between the stepped wall surface 103 and the channel wall surface segment. In this way, in the process of the airflow flowing through the heat dissipation channel 12 of the heat dissipator 100, the obtuse angle formed between the stepped wall surface 103 and the channel wall surface segment can reduce the obstructive effect of the stepped wall surface 103 of the heat dissipation substrate 10 on the airflow entering the heat dissipation channel 12, reducing the adverse effect of the stepped wall surface 103 on the heat dissipation effect. Through being guided by the stepped wall surface 103, the airflow can smoothly flow through the heat dissipation channel 12 of the heat dissipator 100, which can improve the heat dissipation effect of the heat dissipator 100. As a result, regardless of whether the outdoor fan 23 in the fan chamber 212 rotates clockwise or counterclockwise, the airflow can smoothly flow through the heat dissipation channel 12, enhancing the versatility of the heat dissipator 100.

[0089] As illustrated in FIG. 1 to FIG. 3, according to some embodiments of the present disclosure, the outdoor unit housing 21 has a compressor chamber 211. The compressor assembly is disposed in the compressor chamber 211. The fan chamber 212 and the compressor chamber 211 are arranged in a left-right direction. A middle partition plate 213 is provided between the fan chamber 212 and the compressor chamber 211. The electrical control box assembly 20 is mounted at the middle partition plate 213. The electrical control box 201 is located in the compressor chamber 211. The channel wall surface 101 of the at least one heat dissipation channel 12 includes two channel wall surface segments arranged sequentially in the up-down direction. An upper channel wall surface segment of the two channel wall surface segments is a first channel wall surface segment 102. A lower channel wall surface segment of the two channel wall surface segments is a second channel wall surface segment 104. In the up-down direction, a lower part of the heat dissipator 100 is located closer to the outdoor fan 23 than an upper part of the heat dissipator 100. In the left-right direction, the second channel wall surface segment 104 is located closer to the compressor chamber 211 than the first channel wall surface segment 102. The stepped wall surface 103 between the second channel wall surface segment 104 and the first channel wall surface segment 102 extends obliquely upwards in a direction from the compressor chamber 211 to the fan chamber 212.

[0090] By forming the obtuse angle α1 between the first channel wall surface segment 102 and the stepped wall surface 103, or by forming the obtuse angle α2 between the stepped wall surface 103 and the second channel wall surface segment 104, or by forming the angle α1 between the first channel wall surface segment 102 and the stepped wall surface 103 and forming the obtuse angle α2 between the second channel wall surface segment 104 and the stepped wall surface 103, by enabling the second channel wall surface segment 104 to be located closer to the compressor chamber 211 than the first channel wall surface segment 102 in the left-right direction, and by allowing the stepped wall surface 103 to extend obliquely upwards in the direction from the compressor chamber 211 to the fan chamber 212, the obstructive effect of the stepped wall surface 103 of the channel wall surface 101 on the airflow in the heat dissipation channel 12 can be reduced when the outdoor fan 23 rotates in the counterclockwise direction and drives the airflow to flow from bottom to top through the heat dissipation channel 12. In this way, the adverse effect of the stepped wall surface 103 on the heat dissipation effect can be reduced, improving the heat dissipation effect of the heat dissipator 100. As a result, regardless of whether the outdoor fan 23 in the fan chamber 212 rotates clockwise or counter-clockwise, the airflow can smoothly flow through the heat dissipation channel 12, enhancing the versatility of the heat dissipator 100.

[0091] As illustrated in FIG. 1 to FIG. 3, according to some exemplary embodiments of the present disclosure, a surface of the heat dissipator 100 facing the fan chamber 212 includes an avoidance surface 13 for avoiding the outdoor fan 23. At least part of the avoidance surface 13 extends obliquely away from the outdoor fan 23 in a direction from top to bottom. For example, the entire avoidance surface 13 extends obliquely away from the outdoor fan 23 in the direction from top to bottom. For example, a part of the avoidance surface 13 extends obliquely away from the outdoor fan 23 in the direction from top to bottom, and another part of the avoidance surface 13 extends vertically in the direction from top to bottom. The avoidance surface 13 can ensure a predetermined safety gap between the heat dissipator 100 and the outdoor fan 23, to prevent a collision between the heat dissipator 100 and the outdoor fan 23, ensuring safety performance of the heat dissipator 100. Further, a heat dissipation and cooling effect of the outdoor fan 23 on the heat dissipator 100 can be ensured, and the heat dissipation efficiency of the heat dissipator 100 for the electrical control box 201 can be guaranteed.

[0092] As illustrated in FIG. 1 to FIG. 3, according to some exemplary embodiments of the present disclosure, the outdoor unit 200 includes a first air guide cover 25 located at a top of the heat dissipator 100. A first air guide cavity is defined by the first air guide cover 25 and the heat dissipator 100 together. Or, the first air guide cavity is defined by the first air guide cover 25, the heat dissipator 100 and the middle partition plate 213 together. The compressor chamber 211 is in communication with the heat dissipation channel 12 of the heat dissipator 100 through the first air guide cavity. The first air guide cover 25 can provide guidance for the airflow at the top of the heat dissipator 100. The outdoor fan 23 is configured to drive the airflow in the fan chamber 212 to flow outwards during the operation of the outdoor fan 23, which causes an air pressure in the fan chamber 212 to be lower than an air pressure in the compressor chamber 211. Since the compressor chamber 211 is in communication with the heat dissipation channel 12 through the first air guide cavity, and the heat dissipation channel 12 is in communication with the fan chamber 212, the airflow in the compressor chamber 211 can flow sequentially from top to bottom through the first air guide cavity and the heat dissipation channel 12 under an air pressure difference between the fan chamber 212 and the compressor chamber 211. In some exemplary embodiments of the present disclosure, when the outdoor fan 23 rotates in the clockwise direction, the outdoor fan 23 drives the airflow in the fan chamber 212 to flow and smoothly flow from top to bottom through the heat dissipation channel 12. In a process where the airflow in the compressor chamber 211 and flowing through the first air guide cover 25 and the airflow in the fan chamber 212 flow through the heat dissipation channel 12 in one direction, the airflows can exchange heat with adjacent heat dissipation fins 11. When flowing out of the heat dissipation channel 12, the airflows can carry away the heat from the heat dissipation fins 11. In this way, the heat dissipation effect of the heat dissipator 100 can be better achieved, which in turn improves the heat dissipation efficiency of the heat dissipator 100 for the electrical control box 201. In some exemplary embodiments of the present disclosure, when the outdoor fan 23 rotates in the counterclockwise direction, through being guided by the stepped wall surface 103, the outdoor fan 23 may drive the airflow in the fan chamber 212 to smoothly flow from bottom to top through the heat dissipation channel 12. In this case, in the heat dissipation channel 12, the airflow in the compressor chamber 211 and flowing through the first air guide cover 25 and the airflow in the fan chamber 212 flow in opposite directions. The airflow in the compressor chamber 211 and flowing through the first air guide cover 25 conforms to the flow direction of the airflow in the fan chamber 212 and is discharged from the heat dissipation channel 12. In this way, the heat dissipation effect of the airflow on the heat dissipator 100 is achieved.

[0093] As illustrated in FIG. 1 to FIG. 3, according to some exemplary embodiments of the present disclosure, the first air guide cover 25 has a first air guide opening 251 on a side of the first air guide cover 25 facing the compressor chamber 211. The airflow in the compressor chamber 211 is adapted to flow into the first air guide cavity through the first air guide opening 251 and flow downwards through the heat dissipation channel 12.

[0094] As illustrated in FIG. 1 to FIG. 3, according to some exemplary embodiments of the present disclosure, a surface of the first air guide cover 25 facing the fan chamber 212 is a first surface. A part of the first surface adjacent to the heat dissipator 100 is flush with the surface of the heat dissipator 100 facing the fan chamber 212. With such an arrangement, the airflow in the first air guide cavity can be ensured to flow into the heat dissipation channel 12 along the first air guide cover 25 under an action of the first air guide cover 25, better improving the heat dissipation effect of the outdoor fan 23 on the heat dissipator 100.

[0095] As illustrated in FIG. 3, according to some exemplary embodiments of the present disclosure, the outdoor unit 200 includes a second air guide cover 26. The second air guide cover 26 is located at a bottom of the heat dissipator 100. A second air guide cavity is defined by the second air guide cover 26 and the heat dissipator 100 together. Or, the second air guide cavity is defined by the second air guide cover 26, the heat dissipator 100 and the middle partition plate 213 together. The compressor chamber 211 is in communication with the heat dissipation channel 12 through the second air guide cavity. The second air guide cover 26 can provide guidance for the airflow at the bottom of the heat dissipator 100. The outdoor fan 23, when in operation, causes the air pressure in the fan chamber 212 to be lower than the air pressure in the compressor chamber 211. Since the compressor chamber 211 and the heat dissipation channel 12 are in communication with each other through the second air guide cavity, and the heat dissipation channel 12 is in communication with the fan chamber 212, the airflow in the compressor chamber 211 can flow sequentially from bottom to top through the first air guide cavity and the heat dissipation channel 12 under the air pressure difference between the fan chamber 212 and the compressor chamber 211. When the outdoor fan 23 rotates in the counterclockwise direction, through being guided by the stepped wall surface 103, the outdoor fan 23 drives the airflow in the fan chamber 212 to flow and smoothly flow from bottom to top through the heat dissipation channel 12. In a process where the airflow in the compressor chamber 211 and the airflow in the fan chamber 212 flow through the heat dissipation channel 12 in one direction, the airflows can exchange heat with adjacent heat dissipation fins 11. When flowing out of the heat dissipation channel 12, the airflows can carry away the heat from the heat dissipation fins 11. In this way, the heat dissipation effect of the heat dissipator 100 is achieved, which in turn improves the heat dissipation effect of the heat dissipator 100 on the electrical control box 201.

[0096] As illustrated in FIG. 3, according to some exemplary embodiments of the present disclosure, a surface of the second air guide cover 26 facing the fan chamber 212 is a second surface. A part of the second surface adjacent to the heat dissipator 100 is flush with the surface of the heat dissipator 100 facing the fan chamber 212. With such an arrangement, the airflow in the second air guide cavity can be ensured to flow into the heat dissipation channel 12 along the second air guide cover 26 under an action of the second air guide cover 26, better improving the heat dissipation effect of the outdoor fan 23 on the heat dissipator 100.

[0097] As illustrated in FIG. 3, according to some exemplary embodiments of the present disclosure, a lower end of the heat dissipator 100 is located in the second air guide cover 26. In this way, the airflow in the second air guide cavity can all flow along the heat dissipation channel 12 of the heat dissipator 100 under the action of the second air guide cover 26. As a result, a large amount of airflow flows in the heat dissipation channel 12. Thus, an amount of the heat exchanged between the airflow and adjacent heat dissipation fins 11 can be increased, achieving a better overall heat dissipation effect of the heat dissipator 100.

[0098] The heat dissipator 100, the electrical control box assembly 20, and the outdoor unit 200 according to some embodiments of the present disclosure will be described below with reference to FIG. 1, FIG. 2, and FIG. 4 to FIG. 10.

[0099] As illustrated in FIG. 1 and FIG. 2, in this embodiment, the outdoor unit 200 includes the outdoor unit housing 21, the outdoor heat exchanger 22, the outdoor fan 23, the compressor assembly, and the electrical control box assembly 20. The electrical control box assembly 20 includes the heat dissipator 100. The outdoor heat exchanger 22, the outdoor fan 23, the compressor assembly, and the electrical control box assembly 20 are disposed in the outdoor unit housing 21.

[0100] The outdoor unit housing 21 has the fan chamber 212 and the compressor chamber 211 that are spaced apart from each other in the left-right direction. The middle partition plate 213 is provided between the fan chamber 212 and the compressor chamber 211. The outdoor heat exchanger 22 and the outdoor fan 23 are disposed in the fan chamber 212. The compressor assembly is disposed in the compressor chamber 211. The electrical control box assembly 20 is mounted at the middle partition plate 213.

[0101] As illustrated in FIG. 1 to FIG. 5, the electrical control box assembly 20 includes the electrical control box 201 and the heat dissipator 100. The heat dissipator 100 is disposed at the electrical control box 201. The electrical control box 201 includes the box body 202 and the electrical control component. The heat dissipator 100 and the box body 202 of the electrical control box 201 are integrally formed. The electrical control component is disposed in the box body 202. The heat dissipator 100 includes the heat dissipation substrate 10. The heat dissipation substrate 10 is disposed at a side close to the electrical control box 201. The heat dissipation substrate 10 is formed as the part of the box body 202 of the electrical control box 201. The heat dissipation substrate 10 is formed as the profiled structure 106 adapted to the shape of the electrical control component. The profiled structure 106 conforms to a shape of the part of the electrical control component at the side of the electrical control component facing the heat dissipation substrate 10. The heat dissipation substrate 10 is thermally connected to or in thermal contact with the electrical control component. The heat dissipator 100 further includes the plurality of heat dissipation fins 11 disposed on the heat dissipation substrate 10. The plurality of heat dissipation fins 11 are arranged at uniform intervals in the front-rear direction. The plurality of heat dissipation channels 12 extending in the up-down direction are defined between the plurality of heat dissipation fins 11 and the heat dissipation substrate 10.

[0102] As illustrated in FIG. 6 to FIG. 10, the wall surface of the heat dissipation substrate 10 facing the heat dissipation channel 12 is the channel wall surface 101. The channel wall surface 101 of the plurality of heat dissipation channels 12 includes the first channel wall surface segment 102 and the second channel wall surface segment 104 that are arranged sequentially in the up-down direction. The first channel wall surface segment 102 is located at an upper side of the second channel wall surface segment 104. In the left-right direction, the second channel wall surface segment 104 is located closer to the compressor chamber 211 than the first channel wall surface segment 102. The stepped wall surface 103 is connected between the first channel wall surface segment 102 and the second channel wall surface segment 104. The rounded portion 105 is connected between the first channel wall surface segment 102 and the stepped wall surface 103. The rounded portion 105 is also connected between the second channel wall surface segment 104 and the stepped wall surface 103. Both the first channel wall surface segment 102 and the second channel wall surface segment 104 extend vertically in the up-down direction. In addition, the first channel wall surface segment 102 and the second channel wall surface segment 104 are arranged in parallel. The stepped wall surface 103 between the second channel wall surface segment 104 and the first channel wall surface segment 102 extends obliquely upwards in the direction from the compressor chamber 211 to the fan chamber 212. The angle α1 is formed between the stepped wall surface 103 and the first channel wall surface segment 102. The angle α2 is formed between the stepped wall surface 103 and the second channel wall surface segment 104. The angle α1 and the angle α2 are equal to each other. As illustrated in FIG. 9 and FIG. 10, a magnitude of the angle α1 between the stepped wall surface 103 and the first channel wall surface segment 102 and a magnitude of the angle α2 between the stepped wall surface 103 and the second channel wall surface segment 104 are different for at least two different heat dissipation channels 12.

[0103] As illustrated in FIG. 1 and FIG. 2, the outdoor unit 200 further includes the first air guide cover 25. The first air guide cover 25 is located at the top of the heat dissipator 100. The first air guide cavity is defined by the first air guide cover 25, the heat dissipator 100, and the middle partition plate 213 together. The first air guide cover 25 has the first air guide opening 251 on the side of the first air guide cover 25 facing the compressor chamber 211. The compressor chamber 211 is in communication with the heat dissipation channel 12 of the heat dissipator 100 through the first air guide cavity.

[0104] During the operation of the outdoor unit 200, the electrical control component is configured to control operations of components within the outdoor unit 200. The temperature of the electrical control component rises due to the heat generation during the operation of the electrical control component. The heat may be transferred by the electrical control component to the heat dissipator 100 through the heat dissipation substrate 10. Also, the heat may be transferred by the electrical control component to the heat dissipator 100 through the box body 202 of the electrical control box 201. When in operation, the outdoor fan 23 in the fan chamber 212 drives the airflow in the fan chamber 212 to flow. The airflow in the fan chamber 212 may flow from top to bottom through the heat dissipation channel 12, sequentially flowing through the first channel wall surface segment 102, the stepped wall surface 103, and the second channel wall surface segment 104. In addition, when in operation, the outdoor fan 23 also drives the airflow in the fan chamber 212 to flow outwards, causing the air pressure in the fan chamber 212 to be lower than the air pressure in the compressor chamber 211. Under the air pressure difference between the fan chamber 212 and the compressor chamber 211, the airflow in the compressor chamber 211 can sequentially flow from top to bottom through the first air guide cavity and the heat dissipation channel 12.

[0105] When the airflow in the compressor chamber 211 and flowing through the first air guide cover 25 and the airflow in the fan chamber 212 flow from top to bottom through the heat dissipation channel 12, the airflows can exchange heat with adjacent heat dissipation fins 11. When flowing out of the heat dissipation channel 12, the airflows can carry away the heat from the heat dissipation fins 11. In this way, the heat dissipation effect of the heat dissipator 100 is achieved, which in turn improves the heat dissipation effect of the heat dissipator 100 on the electrical control box 201.

[0106] The electrical control box assembly 20 according to some other embodiments of the present disclosure will be described below with reference to FIG. 3 to FIG. 10. In these embodiments, parts that are the same as those in the above embodiments will not be repeated, and reference may be made to the above embodiments. Differences of these embodiments from the above embodiments are mainly described.

[0107] In these embodiments, the outdoor unit 200 further includes the second air guide cover 26. Under the air pressure difference between the fan chamber 212 and the compressor chamber 211, the airflow in the compressor chamber 211 may also sequentially flow from bottom to top through the second air guide cavity and the heat dissipation channel 12. In addition, the outdoor fan 23 rotates in the counterclockwise direction in the fan chamber 212, and drives the airflow in the fan chamber 212 to flow. Through being guided by the stepped wall surface 103, the airflow in the fan chamber 212 smoothly flows from bottom to top through the heat dissipation channel 12, the second channel wall surface segment 104, the stepped wall surface 103, and the first channel wall surface segment 102. In the process where the airflow in the compressor chamber 211 and flowing through the second air guide cover 26 and the airflow in the fan chamber 212 flow through the heat dissipation channel 12 in one direction, the airflows can exchange heat with adjacent heat dissipation fins 11. When flowing out of the heat dissipation channel 12, the airflows can carry away the heat from the heat dissipation fins 11. In this way, the heat dissipation effect of the heat dissipator 100 is better achieved, which in turn improves the heat dissipation effect of the heat dissipator 100 on the electrical control box 201. The flow direction of the airflow entering the heat dissipation channel 12 through the first air guide cover 25 conforms to the flow direction of the airflow in the compressor chamber 211 and flowing through the second air guide cover 26 and the flow direction of the airflow in the fan chamber 212, and is discharged from the heat dissipation channel 12. In this way, the heat dissipation effect of the airflow on the heat dissipator 100 is achieved.

[0108] The electrical control box assembly 20 according to some other embodiments of the present disclosure is described below with reference to FIG. 11 to FIG. 16. In these embodiments, parts that are the same as those in the above embodiments will not be repeated, and reference may be made to the above embodiments. Differences of these embodiments from the above embodiments are mainly described.

[0109] As illustrated in FIG. 11 to FIG. 15, in these embodiments, the electrical control box assembly 20 further includes the wire harness 2 and the fixing structure. The fixing structure is configured to fix the wire harness 2 relative to the electrical control box 201.

[0110] The box body 202 includes the box main body 111 and the box cover 112. The box main body 111 has the accommodation space. The electrical control component is accommodated and disposed in the accommodation space of the box main body 111. The box main body 111 is formed to be open towards a side. The box cover 112 covers the box main body 111 at the open side of the box main body 111.

[0111] As illustrated in FIG. 13, the wire outlet hole 13 is formed in the peripheral wall of the box main body 111. The wire harness 2 extends to the outside of the box body 202 through the wire outlet hole 13. The end of the wire harness 2 located in the box body 202 is electrically connected to the electrical control component. The part of the wire harness 2 located outside the box body 202 is the external wire harness 6.

[0112] As illustrated in FIG. 14 and FIG. 15, the box cover 112 has a plurality of mounting holes 1123 arranged at intervals at a side of the box cover 112 adjacent to the wire outlet hole 13. The fixing structure includes the plurality of wire clamps 31 arranged at intervals. The plurality of wire clamps 31 are arranged corresponding to the plurality of mounting holes 1123. By passing the fastener through the wire clamp 31 and the mounting hole 1123, the wire clamp 31 is fixed at the mounting hole 1123 of the box body 202.

[0113] In an exemplary embodiment of the present disclosure, the wire clamp 31 includes the wire fixing ring 312 and the locking portion 313. The wire fixing ring 312 is in the shape of the open ring and defines the wire fixing hole 311. The locking portion 313 is connected to the two circumferential ends of the wire fixing ring 312. By passing the fastener through the locking portions 313 positioned at the two circumferential ends of the wire fixing ring 312 and the mounting hole 1123, the locking portions 313 positioned at the two circumferential ends of the wire fixing ring 312 can be connected to each other and the wire clamp 31 is connected to the box body 202.

[0114] As illustrated in FIG. 11 to FIG. 15, the electrical control box assembly 20 includes three sub-harnesses 7 having different functions. The three sub-harnesses 7 having different functions extend from different wire outlet holes 13 to the outside of the box body 202. The external wire harnesses 6 of the three sub-harnesses 7 having different functions are all routed along the side of the box cover 112 facing away from the box main body 111. The plurality of wire clamps 31 are divided into three groups of wire clamp groups. Each wire clamp group includes one wire clamp 31. The external wire harnesses 6 of the sub-harnesses 7 having different functions pass through the wire fixing holes 311 of the corresponding wire clamps 31, and are fixed to the wire clamps 31 by fasteners. In this way, the sub-harnesses 7 having different functions are fixed to the box body 202 separately.

[0115] As illustrated in FIG. 11 to FIG. 15, the external wire harness 6 of each of the three sub-harnesses 7 having different functions includes the water return bend segment 5. The water return bend segment 5 is located between the wire outlet hole 13 and the fixing structure. When the electrical control box assembly 20 is mounted to the outdoor unit, the water return bend segment 5 bends downwards and the lowest part of the water return bend segment 5 is lower than the wire outlet hole 13.

[0116] The electrical control box assembly 20 according to some other embodiments of the present disclosure is described below with reference to FIG. 17 to FIG. 20. In these embodiments, parts that are the same as those in the above embodiments will not be repeated, and reference may be made to the above embodiments. Differences of these embodiments from the above embodiments are mainly described.

[0117] In these embodiments, the box cover 112 of the box body 202 includes the cover main body 1121 and the extension portion 1122. The extension portion 1122 is located at a side of the cover main body 1121 adjacent to the wire outlet hole 13. The wiring space 4 is defined between the extension portion 1122 and the peripheral wall of the box main body 111. The extension portion 1122 has the plurality of mounting holes 1123 arranged at intervals. The wire fixing ring 312 of the wire clamp 31 passes through the mounting hole 1123 in the circumferential direction of the fixing ring. The locking portions 313 positioned at the two circumferential ends of the wire fixing ring 312 are snap-fitted to each other. In this way, the wire clamp 31 is fixed to the box body 202. The three sub-harnesses 7 having different functions extend out of the box body 202 through different wire outlet holes 13, and are all routed along a side of the wiring space 4 facing the box body 202.

[0118] A heating and ventilation device according to an embodiment in a fourth aspect of the present disclosure includes the outdoor unit 200 according to the embodiment in the third aspect of the present disclosure. For example, the heating and ventilation device may be a heat pump system, an air conditioning system, or the like.

[0119] In heating and ventilation device according to the embodiment of the present disclosure, the above outdoor unit 200 is provided. The outdoor unit 200 includes the electrical control box assembly 20. The electrical control box assembly 20 includes the heat dissipator 100. The wall surface of the heat dissipation substrate 10 of the heat dissipator 100 facing the heat dissipation channel 12 includes the plurality of channel wall surface segments arranged sequentially from top to bottom. In addition, the stepped wall surface 103 is connected between two adjacent channel wall surface segments. The obtuse angle is formed between the stepped wall surface 103 and the channel wall surface segment. In this way, in the process of the airflow flowing through the heat dissipation channel 12 of the heat dissipator 100, the obtuse angle formed between the stepped wall surface 103 and the channel wall surface segment can reduce the obstructive effect of the stepped wall surface 103 of the heat dissipation substrate 10 on the airflow entering the heat dissipation channel 12, reducing the adverse effect of the stepped wall surface 103 on the heat dissipation effect. Through being guided by the stepped wall surface 103, the airflow can smoothly flow through the heat dissipation channel 12 of the heat dissipator 100, which can improve the heat dissipation effect of the heat dissipator 100. As a result, regardless of whether the outdoor fan 23 in the fan chamber 212 rotates clockwise or counterclockwise, the airflow can smoothly flow through the heat dissipation channel 12, enhancing the versatility of the heat dissipator 100.

[0120] In the description of the present disclosure, it should be understood that, the orientation or the position indicated by terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "over", "below", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", and "circumferential" should be construed to refer to the orientation and the position as shown in the drawings, and is only for the convenience of describing the present disclosure and simplifying the description, rather than indicating or implying that the pointed device or element must have a specific orientation, or be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present disclosure.

[0121] In the description of the present disclosure, "plurality" means two or more.

[0122] In the description of the present disclosure, "first feature" and "second feature" may include one or more of these features.

[0123] In the description of the present disclosure, the first feature "on" or "under" the second feature may mean that the first feature is in direct contact with the second feature, or the first and second features are in indirect contact through another feature between them.

[0124] In the description of the present disclosure, the first feature "above" the second feature means that the first feature is directly above or obliquely above the second feature, or simply means that the level of the first feature is higher than that of the second feature.

[0125] Reference throughout this specification to "an embodiment", "some embodiments", "illustrative embodiments", "an example", "a specific example", or "some examples" means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present disclosure. The appearances of the above phrases in various places throughout this specification are not necessarily referring to the same embodiment or example. Further, the particular features, structures, materials, or characteristics may be combined in any suitable manner in one or more embodiments or examples.

[0126] Although embodiments of the present disclosure have been illustrated and described, it is conceivable for those skilled in the art that various changes, modifications, replacements, and variations can be made to these embodiments without departing from the principles and spirit of the present disclosure. The scope of the present disclosure shall be defined by the claims as appended and their equivalents.

Examples

Embodiment Construction

[0042]Embodiments of the present disclosure will be described in detail below with reference to examples thereof as illustrated in the accompanying drawings, throughout which same or similar elements, or elements having same or similar functions, are denoted by same or similar reference numerals. The embodiments described below with reference to the drawings are illustrative only, and are intended to explain, rather than limit, the present disclosure.

[0043]A heat dissipator 100, an electrical control box assembly 20, an outdoor unit 200, and a heating and ventilation device according to the embodiments of the present disclosure are described below with reference to FIG. 1 to FIG. 10.

[0044]As illustrated in FIG. 1 to FIG. 10, the heat dissipator 100 according to an embodiment in a first aspect of the present disclosure is used for the electrical control box assembly 20. The electrical control box assembly 20 is applied in the outdoor unit 200. The heat dissipator 100 is at least part...

CROSS-REFERENCE TO RELATED APPLICATION

[0001] This application is based on and claims priorities to Chinese patent applications No. 202323007095.3, filed on November 07, 2023, No. 202311514540.7, filed on November 14, 2023, and No. 202323073041.7, filed on November 14, 2023, the entire contents of which are incorporated herein by reference.FIELD

[0002] The present disclosure relates to the field of electrical control heat dissipation technologies, and more particularly, to a heat dissipator, an electrical control box assembly, an outdoor unit, and a heating and ventilation device.BACKGROUND

[0003] An electrical control box assembly is usually provided in an outdoor unit. An electrical control component is provided in the electrical control box assembly to control operations of other components in the outdoor unit. During an operation of the electrical control component, a large amount of heat is generated on the electrical control component. Therefore, a heat dissipator is usually disposed at the electrical control box assembly for heat dissipation, and the heat dissipator is at least partially disposed in a fan chamber of the outdoor unit. An outdoor fan in the fan chamber, when in operation, drives an airflow to flow, which can carry away heat from the heat dissipator. To improve a heat dissipation effect of the heat dissipator and maintain a satisfactory thermal connection or thermal contact between the heat dissipator and the electrical control component, a heat dissipation substrate of the heat dissipator is usually designed to match the electrical control component.

[0004] However, due to differences in heights of various parts of the electrical control component, a structure of the heat dissipator imposes a limitation after the heat dissipation substrate of the heat dissipator and the like are designed to match the electrical control component. Thus, only when the outdoor fan rotates in one direction, the airflow can smoothly flow through a heat dissipation channel of the heat dissipator. When the outdoor fan rotates in an opposite direction, the airflow cannot smoothly flow through the heat dissipation channel of the heat dissipator, and encounters a large resistance when flowing through the heat dissipation channel, which adversely affects a heat dissipation effect of the airflow on the heat dissipator. As a result, versatility of the heat dissipator is unsatisfactory.SUMMARY

[0005] The present disclosure aims to solve at least one of the technical problems in the related art. To this end, embodiments of the present disclosure are to provide a heat dissipator. A wall surface of a heat dissipation substrate of the heat dissipator facing a heat dissipation channel includes a plurality of channel wall surface segments arranged sequentially from top to bottom. A stepped wall surface is connected between two adjacent channel wall surface segments of the plurality of channel wall surface segments. An angle formed between the stepped wall surface and each of the two adjacent channel wall surface segments is an obtuse angle. In this way, regardless of whether an outdoor fan in a fan chamber rotates clockwise or counterclockwise, in a process of an airflow flowing through the heat dissipation channel of the heat dissipator, the obtuse angle formed between the stepped wall surface and the channel wall surface segment can reduce an obstructive effect of the stepped wall surface on the airflow entering the heat dissipation channel. By being guided by the stepped wall surface, the airflow can smoothly flow through the heat dissipation channel of the heat dissipator. As a result, a heat dissipation effect of the heat dissipator can be improved. Thus, the heat dissipator has high versatility.

[0006] Embodiments of the present disclosure are also to provide an electrical control box assembly including the above heat dissipator.

[0007] Embodiments of the present disclosure are also to provide an outdoor unit including the above electrical control box assembly.

[0008] Embodiments of the present disclosure are also to provide a heating and ventilation device including the above outdoor unit.

[0009] A heat dissipator for an electrical control box assembly according to an embodiment in a first aspect of the present disclosure is provided. The electrical control box assembly is applied in an outdoor unit. The heat dissipator is at least partially located in a fan chamber of the outdoor unit. The heat dissipator includes a heat dissipation substrate, and a plurality of heat dissipation fins disposed on the heat dissipation substrate. At least one heat dissipation channel is defined between the plurality of heat dissipation fins and the heat dissipation substrate, and each of the at least one heat dissipation channel extends in an up-down direction. The heat dissipation substrate is adapted to be thermally connected to or in thermal contact with an electrical control component of the electrical control box assembly. A wall surface of the heat dissipation substrate facing the at least one heat dissipation channel is a channel wall surface. The channel wall surface for the at least one heat dissipation channel includes a plurality of channel wall surface segments arranged sequentially in the up-down direction. A stepped wall surface is connected between two adjacent channel wall surface segments of the plurality of channel wall surface segments. An angle formed between the stepped wall surface and each of the two adjacent channel wall surface segments is an obtuse angle.

[0010] In the heat dissipator according to the embodiment of the present disclosure, the wall surface of the heat dissipation substrate of the heat dissipator facing the heat dissipation channel is designed to include the plurality of channel wall surface segments arranged sequentially from top to bottom. In addition, the stepped wall surface is connected between two adjacent channel wall surface segments. The obtuse angle is formed between the stepped wall surface and the respective channel wall surface segment. In this way, in the process of the airflow flowing through the heat dissipation channel of the heat dissipator, the obtuse angle formed between the stepped wall surface and the respective channel wall surface segment can reduce the obstructive effect of the stepped wall surface of the heat dissipation substrate on the airflow entering the heat dissipation channel, reducing an adverse effect of the stepped wall surface on the heat dissipation effect. By being guided by the stepped wall surface, the airflow can smoothly flow through the heat dissipation channel of the heat dissipator, which can improve the heat dissipation effect of the heat dissipator. As a result, regardless of whether the outdoor fan in the fan chamber rotates clockwise or counterclockwise, the airflow can smoothly flow through the heat dissipation channel, enhancing the versatility of the heat dissipator.

[0011] According to some embodiments of the present disclosure, the angle formed between the stepped wall surface and the adjacent channel wall surface segment ranges from 95° to 170°.

[0012] According to some embodiments of the present disclosure, the angle formed between the stepped wall surface and the adjacent channel wall surface segment ranges from 115° to 150°.

[0013] According to some embodiments of the present disclosure, a joint between the stepped wall surface and the channel wall surface segment is formed as a rounded portion.

[0014] According to some embodiments of the present disclosure, at least one of the plurality of channel wall surface segments extends vertically.

[0015] According to some embodiments of the present disclosure, an angle formed between the stepped wall surface of one of at least two heat dissipation channels and its respective adjacent channel wall surface segments is different from an angle formed between the stepped wall surface of another one of at least two heat dissipation channels and its respective adjacent channel wall surface segment; and / or each of the at least one heat dissipation channel has a plurality of stepped wall surfaces, and an angle formed between one of the plurality of stepped wall surfaces and its respective adjacent channel wall surface segment is different from an angle formed between another one of the plurality of stepped wall surfaces and its respective adjacent channel wall surface segment.

[0016] According to some exemplary embodiments of the present disclosure, at least part of the heat dissipation substrate is formed as a profiled structure adapted to a shape of the electrical control component, and the profiled structure conforms to a shape of a part of the electrical control component at a side of the electrical control component facing the heat dissipation substrate.

[0017] An electrical control box assembly according to an embodiment in a second aspect of the present disclosure includes: an electrical control box including a box body and an electrical control component disposed at the box body; and the heat dissipator according to any of the embodiments in the first aspect of the present disclosure. The heat dissipator is disposed at the electrical control box.

[0018] In the electrical control box assembly according to the embodiment of the present disclosure, the above heat dissipator is provided. The wall surface of the heat dissipation substrate of the heat dissipator facing the heat dissipation channel is designed to include the plurality of channel wall surface segments arranged sequentially from top to bottom. In addition, the stepped wall surface is connected between two adjacent channel wall surface segments. The obtuse angle is formed between the stepped wall surface and the channel wall surface segment. In this way, in the process of the airflow flowing through the heat dissipation channel of the heat dissipator, the obtuse angle formed between the stepped wall surface and the channel wall surface segment can reduce the obstructive effect of the stepped wall surface of the heat dissipation substrate on the airflow entering the heat dissipation channel, reducing the adverse effect of the stepped wall surface on the heat dissipation effect. Through being guided by the stepped wall surface, the airflow can smoothly flow through the heat dissipation channel of the heat dissipator, which can improve the heat dissipation effect of the heat dissipator. As a result, regardless of whether the outdoor fan in the fan chamber rotates clockwise or counterclockwise, the airflow can smoothly flow through the heat dissipation channel, enhancing the versatility of the heat dissipator.

[0019] According to some embodiments of the present disclosure, the heat dissipator and the box body are integrally formed.

[0020] According to some embodiments of the present disclosure, the electrical control box assembly includes a wire harness and a fixing structure. An end of the wire harness is located in the box body and electrically connected to the electrical control component. A wire outlet hole is formed on the box body, and the wire harness extends out of the box body through the wire outlet hole. A part of the wire harness located outside the box body is an external wire harness. The fixing structure is disposed at the box body and configured to fix the external wire harness.

[0021] According to some embodiments of the present disclosure, the fixing structure is detachably connected to the box body.

[0022] According to some embodiments of the present disclosure, the box body includes a box main body, and a box cover disposed at an open side of the box main body. The box cover includes a cover main body and an extension portion. The cover main body is opposite to the box main body, and the extension portion is connected to an outer peripheral side of the cover main body and protrudes beyond an outer peripheral side of the box main body. The wire outlet hole is formed in a peripheral wall of the box main body. The fixing structure is disposed at the extension portion.

[0023] According to some exemplary embodiments of the present disclosure, the extension portion has a mounting hole for mounting the fixing structure.

[0024] According to some exemplary embodiments of the present disclosure, the extension portion is connected to the cover main body at a side of the cover main body, and the wire outlet hole and the extension portion are located at a same side of the box body.

[0025] According to some exemplary embodiments of the present disclosure, a wiring space is defined between the extension portion and the peripheral wall of the box main body, and the external wire harness is routed along the wiring space; or the external wire harness is routed along a side of the box cover facing away from the box main body.

[0026] According to some embodiments of the present disclosure, the fixing structure includes at least one wire clamp. Each of the at least one wire clamp has a wire fixing hole for the external wire harness to pass through the wire fixing hole.

[0027] According to some exemplary embodiments of the present disclosure, each of the at least one wire clamp includes a wire fixing ring in a shape of an open ring and a locking portion connected to two circumferential ends of the wire fixing ring. The wire fixing hole is defined by the wire fixing ring. The locking portions positioned at the two circumferential ends of the wire fixing ring are connected to each other.

[0028] According to some exemplary embodiments of the present disclosure, the locking portions positioned at the two circumferential ends of the wire fixing ring are detachably connected to each other.

[0029] According to some exemplary embodiments of the present disclosure, the locking portions positioned at the two circumferential ends of the wire fixing ring are snap-fitted to each other or connected to each other by a fastener.

[0030] According to some exemplary embodiments of the present disclosure, the box body has a mounting hole. The wire fixing ring passes through the mounting hole in a circumferential direction of the fixing ring; or a fastener passes through the locking portion and the mounting hole.

[0031] According to some exemplary embodiments of the present disclosure, the wire harness includes a plurality of sub-harnesses having different functions. A plurality of wire clamps are provided and divided into a plurality of wire clamp groups, and each of the plurality of wire clamp groups includes at least one wire clamp. The number of the plurality of wire clamp groups is equal to the number of the plurality of sub-harnesses, and the plurality of wire clamp groups is in one-to-one correspondence with the plurality of sub-harnesses. The plurality of sub-harnesses having different functions are routed separately and each fixed by a corresponding one of the plurality of wire clamp groups.

[0032] According to some exemplary embodiments of the present disclosure, the external wire harness includes a water return bend segment located between the wire outlet hole and the fixing structure. When the electrical control box assembly is mounted to an outdoor unit, the water return bend segment bends downwards and a lowest part of the water return bend segment is lower than the wire outlet hole.

[0033] According to some exemplary embodiments of the present disclosure, the box body is filled with a potting structure.

[0034] An outdoor unit according to an embodiment in a third aspect of the present disclosure includes an outdoor unit housing having a fan chamber; an outdoor heat exchanger and an outdoor fan that are disposed in the fan chamber; a compressor assembly disposed in the outdoor unit housing; and the electrical control box assembly according to any of the embodiments in the second aspect of the present disclosure. The electrical control box assembly is disposed in the outdoor unit housing.

[0035] In the outdoor unit according to the embodiment of the present disclosure, the above electrical control box assembly is provided. The electrical control box assembly includes the heat dissipator. The wall surface of the heat dissipation substrate of the heat dissipator facing the heat dissipation channel is designed to include the plurality of channel wall surface segments arranged sequentially from top to bottom. In addition, the stepped wall surface is connected between two adjacent channel wall surface segments. The obtuse angle is formed between the stepped wall surface and the channel wall surface segment. In this way, in the process of the airflow flowing through the heat dissipation channel of the heat dissipator, the obtuse angle formed between the stepped wall surface and the channel wall surface segment can reduce the obstructive effect of the stepped wall surface of the heat dissipation substrate on the airflow entering the heat dissipation channel, reducing the adverse effect of the stepped wall surface on the heat dissipation effect. By being guided by the stepped wall surface, the airflow can smoothly flow through the heat dissipation channel of the heat dissipator, which can improve the heat dissipation effect of the heat dissipator. As a result, regardless of whether the outdoor fan in the fan chamber rotates clockwise or counterclockwise, the airflow can smoothly flow through the heat dissipation channel, enhancing the versatility of the heat dissipator.

[0036] According to some embodiments of the present disclosure, the outdoor unit housing has a compressor chamber. The compressor assembly is disposed in the compressor chamber. The fan chamber and the compressor chamber are arranged in a left-right direction. A middle partition plate is provided between the fan chamber and the compressor chamber. The electrical control box assembly is mounted at the middle partition plate, and the electrical control box is located in the compressor chamber. The channel wall surface of the at least one heat dissipation channel includes two channel wall surface segments arranged sequentially in the up-down direction. An upper channel wall surface segment of the two channel wall surface segments is a first channel wall surface segment, and a lower channel wall surface segment of the two channel wall surface segments is a second channel wall surface segment. In the up-down direction, a lower part of the heat dissipator is located closer to the outdoor fan than an upper part of the heat dissipator. In the left-right direction, the second channel wall surface segment is located closer to the compressor chamber than the first channel wall surface segment. The stepped wall surface between the second channel wall surface segment and the first channel wall surface segment extends obliquely upwards in a direction from the compressor chamber to the fan chamber.

[0037] A heating and ventilation device according to an embodiment in a fourth aspect of the present disclosure includes the outdoor unit according to any of the embodiments in the third aspect of the present disclosure.

[0038] In the heating and ventilation device according to the embodiment of the present disclosure, the above outdoor unit is provided. The outdoor unit includes the electrical control box assembly. The electrical control box assembly includes the heat dissipator. The wall surface of the heat dissipation substrate of the heat dissipator facing the heat dissipation channel is designed to include the plurality of channel wall surface segments arranged sequentially from top to bottom. In addition, the stepped wall surface is connected between two adjacent channel wall surface segments. The obtuse angle is formed between the stepped wall surface and the channel wall surface segment. In this way, in the process of the airflow flowing through the heat dissipation channel of the heat dissipator, the obtuse angle formed between the stepped wall surface and the channel wall surface segment can reduce the obstructive effect of the stepped wall surface of the heat dissipation substrate on the airflow entering the heat dissipation channel, reducing the adverse effect of the stepped wall surface on the heat dissipation effect. By being guided by the stepped wall surface, the airflow can smoothly flow through the heat dissipation channel of the heat dissipator, which can improve the heat dissipation effect of the heat dissipator. As a result, regardless of whether the outdoor fan in the fan chamber rotates clockwise or counterclockwise, the airflow can smoothly flow through the heat dissipation channel, enhancing the versatility of the heat dissipator.

[0039] Additional aspects and advantages of the present disclosure will be provided at least in part in the following description, or will become apparent at least in part from the following description, or can be learned from practicing of the present disclosure.BRIEF DESCRIPTION OF THE DRAWINGS

[0040] The above and / or additional aspects and advantages of the present disclosure will become more apparent and more understandable from the following description of embodiments taken in conjunction with the accompanying drawings. FIG. 1 is a schematic structural perspective view of a partial structure of an outdoor unit according to some embodiments of the present disclosure. FIG. 2 is a schematic structural perspective view of the partial structure of the outdoor unit in FIG. 1, viewed in another direction. FIG. 3 is a schematic structural perspective view of a partial structure of an outdoor unit according to other embodiments of the present disclosure. FIG. 4 is a schematic structural perspective view of a heat dissipator according to some embodiments of the present disclosure. FIG. 5 is a schematic structural perspective view of a partial structure of an electrical control box assembly in FIG. 4. FIG. 6 is a schematic structural perspective view of a partial structure of an electrical control box assembly in FIG. 4, viewed in another direction. FIG. 7 is an enlarged schematic view of part A in FIG. 6. FIG. 8 is an enlarged schematic view of part B in FIG. 6. FIG. 9 is a cross-sectional view of a partial structure of an electrical control box assembly in FIG. 4. FIG. 10 is a cross-sectional view of a partial structure of an electrical control box assembly in FIG. 4 at another position. FIG. 11 is a schematic structural perspective view of an electrical control box assembly according to other embodiments of the present disclosure. FIG. 12 is a schematic structural perspective view of the electrical control box assembly in FIG. 11, viewed in another direction. FIG. 13 is an enlarged view of part C in FIG. 12. FIG. 14 is a front view of the electrical control box assembly in FIG. 11. FIG. 15 is an enlarged view of part D in FIG. 14. FIG. 16 is a schematic structural perspective view of a wire clamp in FIG. 11. FIG. 17 is a schematic structural perspective view of an electrical control box assembly according to yet other embodiments of the present disclosure. FIG. 18 is a schematic structural perspective view of the electrical control box assembly in FIG. 17, viewed in another direction. FIG. 19 is an enlarged view of part E in FIG. 18. FIG. 20 is a schematic structural perspective view of a wire clamp in FIG. 17. Reference numerals of the accompanying drawings:

[0041] 100: heat dissipator; 10: heat dissipation substrate; 101: channel wall surface; 102: first channel wall surface segment; 103: stepped wall surface; 104: second channel wall surface segment; 105: rounded portion; 106: profiled structure; 11: heat dissipation fin; 12: heat dissipation channel; 13: avoidance surface; 200: outdoor unit; 20: electrical control box assembly; 201: electrical control box; 202: box body; 111: box main body; 112: box cover; 1121: cover main body; 1122: extension portion; 1123: mounting hole; 13: wire outlet hole; 21: outdoor unit housing; 211: compressor chamber; 212: fan chamber; 213: middle partition plate; 22: outdoor heat exchanger; 23: outdoor fan; 25: first air guide cover; 251: first air guide opening; 26: second air guide cover; 2: wire harness; 31: wire clamp; 311: wire fixing hole; 312: wire fixing ring; 313: locking portion; 4: wiring space; 5: water return bend segment; 6: external wire harness; 7: sub-harness. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0042] Embodiments of the present disclosure will be described in detail below with reference to examples thereof as illustrated in the accompanying drawings, throughout which same or similar elements, or elements having same or similar functions, are denoted by same or similar reference numerals. The embodiments described below with reference to the drawings are illustrative only, and are intended to explain, rather than limit, the present disclosure.

[0043] A heat dissipator 100, an electrical control box assembly 20, an outdoor unit 200, and a heating and ventilation device according to the embodiments of the present disclosure are described below with reference to FIG. 1 to FIG. 10.

[0044] As illustrated in FIG. 1 to FIG. 10, the heat dissipator 100 according to an embodiment in a first aspect of the present disclosure is used for the electrical control box assembly 20. The electrical control box assembly 20 is applied in the outdoor unit 200. The heat dissipator 100 is at least partially located in a fan chamber 212 of the outdoor unit 200. For example, the heat dissipator 100 may be partially located in the fan chamber 212, or the heat dissipator 100 may be entirely located in the fan chamber 212. An outdoor fan 23 is provided in the fan chamber 212. During an operation of the outdoor fan 23, flow of an airflow in the fan chamber 212 can be utilized to quickly carry away heat from the heat dissipator 100, improving an overall heat dissipation effect of the heat dissipator 100.

[0045] As illustrated in FIG. 4 to FIG. 10, the heat dissipator 100 includes a heat dissipation substrate 10 and a plurality of heat dissipation fins 11 disposed on the heat dissipation substrate 10. For example, the plurality of heat dissipation fins 11 are arranged at uniform intervals in a front-rear direction. Providing the plurality of heat dissipation fins 11 can increase a heat exchange area of the heat dissipator 100 and improve a heat exchange efficiency of the heat dissipator 100. One or more heat dissipation channels 12 are defined between the plurality of heat dissipation fins 11 and the heat dissipation substrate 10. Each of the one or more heat dissipation channels 12 extends in an up-down direction. The airflow can flow through the heat dissipation channel 12 in the up-down direction. In a process of flowing through the heat dissipation channel 12, the airflow can exchange heat with the adjacent heat dissipation fin 11. When flowing out of the heat dissipation channel 12, the airflow can carry away the heat from the heat dissipation fin 11, achieving a heat dissipation effect of the airflow on the heat dissipator 100. For example, at least one heat dissipation channel 12 is defined between the plurality of heat dissipation fins 11 and the heat dissipation substrate 10. When a plurality of heat dissipation channels 12 are formed, the plurality of heat dissipation channels 12 are arranged at intervals in the front-rear direction.

[0046] The electrical control box assembly 20 includes an electrical control component. The heat dissipation substrate 10 is adapted to be thermally connected to or in thermal contact with the electrical control component of the electrical control box assembly 20. The heat dissipator 100 and the electrical control component may be in direct contact with each other to form thermal contact. A thermally conductive medium may also be provided between the heat dissipator 100 and the electrical control component to form a thermal connection between the heat dissipator 100 and the electrical control component. For example, a thermally conductive adhesive is provided between the heat dissipator 100 and the electrical control component. During an operation of the outdoor unit 200, the heat generated by the electrical control component in operation is transferred to the heat dissipator 100 through the heat dissipation substrate 10. The heat dissipator 100 can dissipate the heat, achieving an effect of dissipating the heat from the electrical control component and cooling the electrical control component through the heat dissipator 100.

[0047] A wall surface of the heat dissipation substrate 10 facing the one or more heat dissipation channels 12 is a channel wall surface 101. The channel wall surface 101 for at least one heat dissipation channels 12 includes a plurality of channel wall surface segments arranged sequentially in the up-down direction. For example, the heat dissipator 100 has one heat dissipation channel 12, and the channel wall surface 101 for the one heat dissipation channel 12 includes a plurality of channel wall surface segments arranged sequentially in the up-down direction. For example, the heat dissipator 100 has a plurality of heat dissipation channels 12. The channel wall surface 101 for one of the plurality of heat dissipation channels 12 includes a plurality of channel wall surface segments arranged in the up-down direction, or the channel wall surfaces 101 for at least two of the plurality of heat dissipation channels 12 include a plurality of channel wall surface segments arranged sequentially in the up-down direction. A stepped wall surface 103 is connected between two adjacent channel wall surface segments. An angle is formed between the stepped wall surface 103 and the channel wall surface segment. By forming the angle between the stepped wall surface 103 and the channel wall surface segment, a structure of the heat dissipation substrate 10 can better match use of the electrical control component, facilitating a formation of a satisfactory thermal connection or thermal contact between the heat dissipation substrate 10 and the electrical control component of the electrical control box assembly 20.

[0048] The angle between the stepped wall surface 103 and the channel wall surface segment is an obtuse angle. By forming the obtuse angle between the stepped wall surface 103 and the channel wall surface segment, in a process of the airflow flowing through the heat dissipation channel 12 of the heat dissipator 100, this obtuse angle formed between the stepped wall surface 103 and the channel wall surface segment can reduce a wind resistance of the stepped wall surface 103 to the airflow flowing in the heat dissipation channel 12, which enables the airflow to flow more smoothly in the heat dissipation channel 12. As a result, the heat dissipation effect of the airflow on the heat dissipator 100 becomes better. Thus, a heat dissipation efficiency of the heat dissipator 100 for the electrical control component can be improved. In this way, regardless of whether the outdoor fan 23 drives the airflow to flow through the heat dissipation air duct from top to bottom or flow through the heat dissipation channel 12 from bottom to top during a rotation of the outdoor fan 23, the airflow can smoothly flow through the heat dissipation channel 12.

[0049] For example, the channel wall surface 101 of the heat dissipator 100 includes a first channel wall surface segment 102 and a second channel wall surface segment 104 that are arranged sequentially in the up-down direction. An angle α1 is formed between the first channel wall surface segment 102 and the stepped wall surface 103. An angle α2 is formed between the second channel wall surface segment 104 and the stepped wall surface 103. Both the angle α1 and the angle α2 are obtuse angles. When the heat dissipator 100 is mounted to the outdoor unit 200, the first channel wall surface segment 102 is located closer to the outdoor fan 23 than the second channel wall surface segment 104. As illustrated in FIG. 1 and FIG. 2, during the operation of the outdoor unit 200, the outdoor fan 23 rotates in a clockwise direction. The outdoor fan 23 drives the airflow to flow through the heat dissipation air duct from top to bottom. After entering the heat dissipation channel 12, the airflow sequentially and smoothly flows through the first channel wall surface segment 102, the stepped wall surface 103, and the second channel wall surface segment 104 from top to bottom. The airflow smoothly flows through the heat dissipation channel 12 and can carry away the heat from the heat dissipator 100 through heat exchange with the heat dissipation fins 11. Thus, the heat dissipation effect of the airflow on the heat dissipator 100 is realized. As illustrated in FIG. 3, during the operation of the outdoor unit 200, the outdoor fan 23 rotates in a counterclockwise direction. The outdoor fan 23 drives the airflow to flow through the heat dissipation channel 12 from bottom to top. After entering the heat dissipation channel 12, the airflow sequentially flows through the second channel wall surface segment 104, the stepped wall surface 103, and the first channel wall surface segment 102 from bottom to top. The obtuse angle α1 between the first channel wall surface segment 102 and the stepped wall surface 103 and the obtuse angle α2 between the second channel wall surface segment 104 and the stepped wall surface 103 can reduce the wind resistance of the stepped wall surface 103 to the airflow flowing in the heat dissipation channel 12. Through being guided by the stepped wall surface 103, the airflow can smoothly flow to the first wall surface segment through the second wall surface segment, reducing an adverse effect of the stepped wall surface 103 on the heat dissipation effect. Thus, versatility of the heat dissipator 100 with outdoor units 200 having outdoor fans 23 with different rotation directions can be enhanced.

[0050] In the heat dissipator 100 according to the embodiment of the present disclosure, the wall surface of the heat dissipation substrate 10 of the heat dissipator 100 facing the heat dissipation channel 12 is arranged to include the plurality of channel wall surface segments arranged sequentially from top to bottom. In addition, the stepped wall surface 103 is connected between two adjacent channel wall surface segments. The obtuse angle is formed between the stepped wall surface 103 and the channel wall surface segment. In this way, in the process of the airflow flowing through the heat dissipation channel 12 of the heat dissipator 100, the obtuse angle formed between the stepped wall surface 103 and the channel wall surface segment can reduce an obstructive effect of the stepped wall surface 103 of the heat dissipation substrate 10 on the airflow entering the heat dissipation channel 12, reducing the adverse effect of the stepped wall surface 103 on the heat dissipation effect. Through being guided by the stepped wall surface 103, the airflow can smoothly flow through the heat dissipation channel 12 of the heat dissipator 100, which can improve the heat dissipation effect of the heat dissipator 100. As a result, regardless of whether the outdoor fan 23 in the fan chamber 212 rotates clockwise or counterclockwise, the airflow can smoothly flow through the heat dissipation channel 12, enhancing the versatility of the heat dissipator 100.

[0051] As illustrated in FIG. 6 to FIG. 10, according to some embodiments of the present disclosure, an angle is formed between the stepped wall surface 103 and the channel wall surface segment. The angle ranges from 95° to 170°. For example, the angle between the stepped wall surface 103 and each channel wall surface segment is 95°, 115°, 125°, 135°, 145°, 150°, 170°, or the like. When the angle between the stepped wall surface 103 and the channel wall surface segment is less than 95°, an obstruction of the channel wall surface 101 to the airflow flowing in the heat dissipation channel 12 cannot be effectively reduced, which is not conducive to improving the heat dissipation effect of the heat dissipator 100. When the angle between the stepped wall surface 103 and the channel wall surface segment is greater than 170°, a length of the stepped wall surface 103 needs to be extended to connect the plurality of channel wall surface segments to each other. In this case, since a lower part of the stepped wall surface 103 needs to be filled with more molding material during die-casting molding of the heat dissipator 100, a lightweight design of the heat dissipator 100 is hindered.

[0052] As illustrated in FIG. 6 to FIG. 10, according to some exemplary embodiments of the present disclosure, an angle is formed between the stepped wall surface 103 and the channel wall surface segment. The angle ranges from 115° to 150°. For example, the angle between the stepped wall surface 103 and each channel wall surface segment is 115°, 120°, 125°, 130°, 135°, 145°, 150°, or the like. When the angle between the stepped wall surface 103 and the channel wall surface segment is less than 115°, the obstruction of the channel wall surface 101 to the airflow flowing in the heat dissipation channel 12 cannot be effectively reduced, which is not conducive to improving the heat dissipation effect of the heat dissipator 100. When the angle between the stepped wall surface 103 and the channel wall surface segment is greater than 150°, the length of the stepped wall surface 103 needs to be extended to connect the plurality of channel wall surface segments to each other. In this case, since the lower part of the stepped wall surface 103 needs to be filled with more molding material during the die-casting molding of the heat dissipator 100, the lightweight design of the heat dissipator 100 is hindered.

[0053] As illustrated in FIG. 6 to FIG. 10, according to some embodiments of the present disclosure, a joint between the stepped wall surface 103 and the channel wall surface segment is formed as a rounded portion 105. By forming the joint as the rounded portion 105, the rounded portion 105 provides a guiding effect for the airflow flowing from the stepped wall surface 103 to the channel wall surface segment, enabling the airflow in the heat dissipation channel 12 to flow more smoothly. As a result, a wind resistance of the channel wall surface 101 to the airflow is reduced, thereby reducing noises generated during the flow of the airflow.

[0054] As illustrated in FIG. 4 to FIG. 10, according to some embodiments of the present disclosure, at least one of the plurality of channel wall surface segments extends vertically in such a manner that an extension direction of the channel wall surface 101 better conforms to a flow direction of the airflow in the fan chamber 212. Therefore, the flow of the airflow into the heat dissipation channel 12 is facilitated, improving the heat dissipation effect of the heat dissipator 100. For example, a rotation axis of the outdoor fan 23 extends in the front-rear direction, and the heat dissipation channel 12 extends vertically. An extension direction of the heat dissipation channel 12 is perpendicular to an extension direction of the rotation axis of the outdoor fan 23. When the outdoor fan 23 rotates about the rotation axis, the airflow in the fan chamber 212 is driven to flow in a tangential direction of the rotation of the outdoor fan 23. When the airflow flows through the heat dissipator 100, the flow of the airflow into the heat dissipation channel 12 in the extension direction of the heat dissipation channel 12 is facilitated, optimizing the heat dissipation effect of the outdoor fan 23 on the heat dissipator 100.

[0055] As illustrated in FIG. 6 to FIG. 10, according to some embodiments of the present disclosure, an angle formed between the stepped wall surface 103 of one of at least two heat dissipation channels 12 and its respective adjacent channel wall surface segment is different from an angle formed between the stepped wall surface 103 of another one of the at least two heat dissipation channels 12 and its respective adjacent channel wall surface segment. To maintain the satisfactory thermal connection or thermal contact between the heat dissipation substrate 10 and the electrical control component of the electrical control box assembly 20, the heat dissipation substrate 10 and the electrical control component need to be designed to match each other. By setting angles between the stepped wall surfaces 103 of different heat dissipation channels 12 and their respective channel wall surface segments to be different from each other, a purpose of designing the heat dissipation substrate 10 and the electrical control component to match each other can be better achieved. The angle between the stepped wall surface 103 and the channel wall surface segment can reduce a wind resistance effect of the stepped wall surface 103 on the airflow in the heat dissipation channel 12, enabling the heat dissipator 100 to achieve a satisfactory heat dissipation effect. In addition, in this way, regardless of whether the outdoor fan 23 of the fan chamber 212 rotates clockwise or counterclockwise, the airflow can smoothly flow through the heat dissipation channel 12.

[0056] According to some embodiments of the present disclosure, when a single heat dissipation channel 12 has a plurality of stepped wall surfaces 103, an angle formed between one of the plurality of stepped wall surfaces 103 and its respective adjacent channel wall surface segment is different from an angle formed between another one of the plurality of stepped wall surfaces 103 and its respective adjacent channel wall surface segment. To maintain the satisfactory thermal connection or thermal contact between the heat dissipation substrate 10 and the electrical control component of the electrical control box assembly 20, the heat dissipation substrate 10 and the electrical control component need to be designed to match each other. By setting angles between different stepped wall surfaces 103 of one heat dissipation channel 12 and their respective channel wall surface segments to be different from each other, the purpose of designing the heat dissipation substrate 10 and the electrical control component to match each other can be better achieved. The angle between the stepped wall surface 103 and the channel wall surface segment can reduce the wind resistance effect of the stepped wall surface 103 on the airflow in the heat dissipation channel 12, enabling the heat dissipator 100 to achieve the satisfactory heat dissipation effect. In addition, in this way, regardless of whether the outdoor fan 23 of the fan chamber 212 rotates clockwise or counterclockwise, the airflow can smoothly flow through the heat dissipation channel 12.

[0057] According to some exemplary embodiments of the present disclosure, at least part of the heat dissipation substrate 10 is formed as a profiled structure 106 adapted to a shape of the electrical control component. The profiled structure 106 conforms to a shape of a part of the electrical control component at a side of the electrical control component facing the heat dissipation substrate 10. The profiled structure 106 can enable a short distance or direct contact between the heat dissipation substrate 10 and the electrical control component, to form the satisfactory thermal connection or thermal contact between the heat dissipation substrate 10 and the electrical control component. As a result, a thermal resistance between the heat dissipation substrate 10 and the electrical control component is reduced, improving a thermal conduction efficiency between the heat dissipation substrate 10 and the electrical control component. Thus, heat dissipation and cooling of the electrical control component by the heat dissipator 100 can be facilitated, improving the overall heat dissipation effect for the electrical control component.

[0058] For example, when the electrical control component is in an operation state, a temperature of the electrical control component rises due to heat generation. Since the profiled structure 106 enables the short distance between the heat dissipation substrate 10 and the electrical control component, the thermally conductive medium (e.g., the thermally conductive adhesive) may be provided between the heat dissipation substrate 10 and the electrical control component, facilitating a formation of the satisfactory thermal connection between the heat dissipation substrate 10 and the electrical control component. Thus, the heat of the electrical control component can be quickly transferred to the heat dissipation substrate 10, which is conducive to improving a heat dissipation and cooling efficiency of the heat dissipator 100 for the electrical control component, better ensuring normal use of the electrical control component.

[0059] For example, when the electrical control component is in the operation state, the temperature of the electrical control component rises due to the heat generation. At least part of the electrical control component is in direct contact with the profiled structure 106, facilitating the satisfactory thermal contact between the heat dissipation substrate 10 and the electrical control component. For example, a part of the electrical control component is in contact with the profiled structure 106, or the entire electrical control component is in direct contact with the profiled structure 106. Since a thermal conduction efficiency of the airflow is less satisfactory compared with the thermal conduction efficiency of the heat dissipation substrate 10, the at least part of the electrical control component being in direct contact with the profiled structure 106 allows the heat of the electrical control component to be transferred to the heat dissipator 100 through the profiled structure 106, which realizes rapid cooling of the electrical control component by the heat dissipator 100, ensuring service performance of the electrical control component.

[0060] As illustrated in FIG. 1 to FIG. 3, an electrical control box assembly 20 according to an embodiment in a second aspect of the present disclosure includes an electrical control box 201 and the above heat dissipator 100. The electrical control box 201 includes a box body 202 and the electrical control component disposed at the box body 202. The heat dissipator 100 is disposed at the electrical control box 201.

[0061] In the electrical control box assembly 20 according to the embodiment of the present disclosure, the above heat dissipator 100 is provided. The wall surface of the heat dissipation substrate 10 of the heat dissipator 100 facing the heat dissipation channel 12 includes the plurality of channel wall surface segments arranged sequentially from top to bottom. In addition, the stepped wall surface 103 is connected between two adjacent channel wall surface segments. The obtuse angle is formed between the stepped wall surface 103 and the channel wall surface segment. In this way, in the process of the airflow flowing through the heat dissipation channel 12 of the heat dissipator 100, the obtuse angle formed between the stepped wall surface 103 and the channel wall surface segment can reduce the obstructive effect of the stepped wall surface 103 of the heat dissipation substrate 10 on the airflow entering the heat dissipation channel 12, reducing the adverse effect of the stepped wall surface 103 on the heat dissipation effect. Through being guided by the stepped wall surface 103, the airflow can smoothly flow through the heat dissipation channel 12 of the heat dissipator 100, which can improve the heat dissipation effect of the heat dissipator 100. As a result, regardless of whether the outdoor fan 23 in the fan chamber 212 rotates clockwise or counterclockwise, the airflow can smoothly flow through the heat dissipation channel 12, enhancing the versatility of the heat dissipator 100.

[0062] According to some embodiments of the present disclosure, the heat dissipator 100 and the box body 202 are integrally formed. When the temperature of the electrical control component in the box body 202 rises, the heat of the electrical control component is transferred to the box body 202. The heat dissipator 100 and the box body 202 are integrally formed, and the heat dissipation substrate 10 of the heat dissipator 100 is formed as a part of the box body 202 of the electrical control box 201, which can enable the heat of the box body 202 to be directly transferred to the heat dissipator 100, reducing a thermal resistance between the box body 202 and the heat dissipator 100. Thus, the heat dissipator 100 can have a better heat dissipation effect on the electrical control box 201. In addition, by integrally forming the heat dissipator 100 and the box body 202, an overall assembly efficiency can be improved, and thus overall structural strength can be increased.

[0063] As illustrated in FIG. 11 to FIG. 20, according to some embodiments of the present disclosure, the electrical control box assembly 20 can be used for an outdoor unit of a heating and ventilation device. The electrical control box assembly 20 includes the electrical control box 201, a wire harness 2, and a fixing structure. The fixing structure is disposed at the electrical control box 201.

[0064] The electrical control box 201 includes the box body 202 and the electrical control component disposed at the box body 202. When the electrical control box assembly 20 is disposed in the outdoor unit, the electrical control component can be used to control the operations of other components in the outdoor unit. A wire outlet hole 13 for the wire harness 2 to extend out of the box body 202 is formed on the box body 202. An end of the wire harness 2 is located in the box body 202 and electrically connected to the electrical control component. For example, a connection terminal may be disposed at the end of the wire harness 2. Through a connection between the connection terminal at the end of the wire harness 2 and the electrical control component in the box body 202, an electrical connection between the wire harness 2 and the electrical control component is achieved. The wire harness 2 extends out of the box body 202 through the wire outlet hole 13. The other end of the wire harness 2 is located outside the box body 202. In this way, the wire harness 2 extends from an inside of the box body 202 to an outside of the box body 202. A part of the wire harness 2 located outside the box body 202 is an external wire harness 6.

[0065] When the electrical control box assembly 20 is mounted in the outdoor unit, the other end of the wire harness 2 may be electrically connected to other components of the outdoor unit. For example, the other end of the wire harness 2 may be electrically connected to a compressor, a fan, etc. in the outdoor unit.

[0066] The fixing structure is disposed at the box body 202. For example, the fixing structure is disposed at an outer wall of the box body 202. The fixing structure is configured to fix the external wire harness 6. Through the fixing structure, the external wire harness 6 and the box body 202 may be relatively fixed to reduce an amount of movement of the external wire harness 6 relative to the electrical control box 201 when the external wire harness 6 is subjected to a force. As a result, it is possible to reduce a possibility that an electrical connection relationship between the wire harness 2 in the box body 202 and the electrical control component becomes problematic due to inadvertent pulling of the external wire harness 6 during transportation, disassembly, or assembly of the electrical control box assembly 20. In this way, additional maintenance procedures or scrapping of the electrical control box assembly 20 can be reduced or avoided. In addition, by providing the fixing structure to relatively fix the external wire harness 6 to the box body 202, wear on the wire harness 2 caused by a friction between the external wire harness 6 and other structures during the transportation, the disassembly, or the assembly of the electrical control box assembly 20 can also be reduced. For example, frictional wear between the external wire harness 6 and the box body 202 can be reduced. Thus, a risk of damage to the electrical control box assembly 20 can be reduced.

[0067] In some embodiments of the present disclosure, the box body 202 may be filled with a potting structure. Filling the box body 202 with the potting structure can improve sealing performance of the electrical control box 201. As a result, safety performance, dustproof performance, and waterproof performance of the electrical control box assembly 20 can be improved. For example, when the electrical control box assembly 20 is applied in the outdoor unit, in a case where a refrigerant system of the outdoor unit adopts a flammable refrigerant, flammable and explosive gases exist in an ambient environment of the electrical control box assembly 20 when a refrigerant leakage occurs in the refrigerant system of the outdoor unit. Since the electrical control box 201 has satisfactory sealing performance, the flammable and explosive gases in the ambient environment of the electrical control box assembly 20 can be prevented from entering the electrical control box 201, which might otherwise cause safety accidents such as explosions.

[0068] For the electrical control box assembly 20 in which the box body 202 is filled with the potting structure, since full potting is employed, the electrical control box assembly 20 is scrapped and unable to be repaired in a case where the electrical connection relationship between the wire harness 2 in the box body 202 and the electrical control component becomes problematic due to the inadvertent pulling of the external wire harness 6. In this case, the electrical control box assembly 20 can only be scrapped. For the electrical control box assembly 20 of the present disclosure, by arranging at the box body 202 the fixing structure for fixing the external wire harness 6 located outside the box body 202, a scrap rate of the electrical control box assembly 20 can be avoided or reduced.

[0069] In the electrical control box assembly 20 according to the embodiment of the present disclosure, the fixing structure is provided. Disposing the fixing structure at the box body 202 may fix the external wire harness 6 relative to the box body 202, to reduce an amount of movement of the external wire harness 6 relative to the box body 202 when the external wire harness 6 is subjected to the force. In this way, the electrical connection relationship between the wire harness 2 in the box body 202 and the electrical control component is prevented from becoming problematic due to the inadvertent pulling of the external wire harness 6 during the transportation, the disassembly, or the assembly of the electrical control box assembly 20. Also, the wear on the wire harness 2 caused by the friction between the external wire harness 6 and other structures during the transportation, the disassembly, or the assembly of the electrical control box assembly 20 can be reduced. Thus, the risk of damage to the electrical control box assembly 20 can be reduced.

[0070] According to some embodiments of the present disclosure, as illustrated in FIG. 12 to FIG. 15 and FIG. 18 to FIG. 20, the fixing structure is detachably connected to the box body 202. For example, the fixing structure may be mounted to the box body 202 by means of fastening, snap-fitting, or the like. By configuring the fixing structure and the box body 202 to be detachably connected to each other, a replacement of the fixing structure is facilitated, and use of different fixing structures for different electrical control boxes 201 and wire harnesses 2 to realize fixation can be facilitated.

[0071] According to some embodiments of the present disclosure, as illustrated in FIG. 12, FIG. 14, FIG. 17, and FIG. 18, the box body 202 includes a box main body 111 and a box cover 112. An accommodation space is formed inside the box main body 111. The box main body 111 has an open side. For example, the electrical control component is accommodated and disposed inside the box main body 111. The box cover 112 covers the box main body 111 at the open side of the box main body 111. The box cover 112 includes a cover main body 1121 and an extension portion 1122. The cover main body 1121 is opposite to the box main body 111 and covers the box main body 111 at the open side of the box main body 111. The extension portion 1122 is connected to an outer peripheral side of the cover main body 1121 and protrudes beyond an outer peripheral side of the box main body 111. The wire outlet hole 13 is formed in a peripheral wall of the box main body 111. The fixing structure is disposed at the extension portion 1122.

[0072] By arranging the fixing structure at the extension portion 1122 of the box cover 112, a part of the fixing structure connected to the box cover 112 is spaced apart from the accommodation space inside the box main body 111. In this way, the part of the fixing structure connected to the box cover 112 is prevented from facing the accommodation space inside the box main body 111, reducing or avoiding an adverse effect on the electrical control component inside the box body 202 caused by an arrangement of the fixing structure. For example, a fastener for the fixing structure can be prevented from extending into an accommodation cavity of the box body 202 and causing interference with or damage to the electrical control component, or a mounting hole 1123 formed on the box body 202 for mounting the fixing structure can be prevented from being in communication with the accommodation cavity of the box body 202 and reducing the sealing performance of the electrical control box 201.

[0073] According to some exemplary embodiments of the present disclosure, as illustrated in FIG. 17 to FIG. 19, the extension portion 1122 has the mounting hole 1123 for mounting the fixing structure. For example, by passing the fastener through the fixing structure and the mounting hole 1123, the fixing structure is detachably mounted at the extension portion 1122 of the box body 202. By forming the mounting hole 1123 for mounting the fixing structure on the extension portion 1122 of the box cover 112, the mounting hole 1123 formed on the box body 202 for mounting the fixing structure can be prevented from being in communication with the accommodation cavity of the box body 202 and reducing the sealing performance of the electrical control box 201, improving the sealing performance of the box main body 111. Thus, service performance and safety performance of the electrical control box 201 can be improved.

[0074] According to some exemplary embodiments of the present disclosure, as illustrated in FIG. 17 to FIG. 19, the extension portion 1122 is connected to the cover main body 1121 at a side of the cover main body 1121, and the wire outlet hole 13 and the extension portion 1122 are located at a same side of the box body 202. In this way, the external wire harness 6 extending out of the box body 202 through the wire outlet hole 13 is adjacent to the extension portion 1122, and the fixing structure is disposed at the extension portion 1122, facilitating relative fixation of the external wire harness 6 and the box body 202 through the fixing structure, and improving a fixing effect of the fixing structure on the external wire harness 6.

[0075] According to some exemplary embodiments of the present disclosure, as illustrated in FIG. 17 and FIG. 18, a wiring space 4 is defined between the extension portion 1122 and the peripheral wall of the box main body 111, and the external wire harness 6 is routed along the wiring space 4. By defining the wiring space 4 between the extension portion 1122 and the peripheral wall of the box main body 111, a reasonable arrangement of routing or the like of the external wire harness 6 can be facilitated. In addition, when the wire harness 2 is arranged in the wiring space 4, the extension portion 1122 and the peripheral wall of the box main body 111 that form the wiring space 4 can protect the external wire harness 6 located in the wiring space 4, reducing unnecessary wear of the external wire harness 6. Further, the wiring space 4 can be fully utilized, making a structure of the electrical control box assembly 20 more compact as a whole.

[0076] According to some exemplary embodiments of the present disclosure, as illustrated in FIG. 12, the external wire harness 6 is routed along a side of the box cover 112 facing away from the box main body 111. That is, the external wire harness 6 is routed along a side facing the box cover 112, facilitating the reasonable arrangement of the routing or the like of the external wire harness 6.

[0077] According to some embodiments of the present disclosure, as illustrated in FIG. 12 to FIG. 20, the fixing structure includes a plurality of wire clamps 31 arranged at intervals, and each of the plurality of wire clamps 31 has a wire fixing hole 311 for the external wire harness 6 to pass through the wire fixing hole 311. By passing the external wire harness 6 through the wire fixing hole 311 and disposing the fixing structure at the box body 202, the external wire harness 6 may be relatively fixed to the box body 202.

[0078] One or more wire clamps 31 are provided. When the plurality of wire clamps 31 are provided, the plurality of wire clamps 31 are arranged at intervals. By configuring the fixing structure to include the plurality of wire clamps 31 arranged at intervals, the fixing effect of the fixing structure on the external wire harness 6 can be improved, to reduce the amount of movement of the external wire harness 6 relative to the box body 202 to a greater extent, better preventing the electrical connection relationship between the wire harness 2 in the box body 202 and the electrical control component from becoming problematic due to the inadvertent pulling of the external wire harness 6 during the transportation, the disassembly, or the assembly of the electrical control box assembly 20.

[0079] It should be noted that "plurality of" described in the present disclosure refers to two or more than two.

[0080] According to some exemplary embodiments of the present disclosure, as illustrated in FIG. 16 and FIG. 20, the wire clamp 31 includes a wire fixing ring 312 and a locking portion 313. The wire fixing ring 312 is in a shape of an open ring. The wire fixing hole 311 is defined at an inner circumferential side of the wire fixing ring 312. The locking portion 313 is connected to two circumferential ends of the wire fixing ring 312. That is, the two circumferential ends of the wire fixing ring 312 are each connected to the locking portion 313. The locking portions 313 positioned at the two circumferential ends of the wire fixing ring 312 are connected to each other. By passing the external wire harness 6 through the wire fixing hole 311, and connecting the locking portions 313 positioned at the two circumferential ends of the wire fixing ring 312 to each other, the wire fixing ring 312 defining the wire fixing hole 311 exerts a fixing effect on the external wire harness 6, which can reduce the amount of movement of the external wire harness 6 relative to the box body 202, preventing the electrical connection relationship between the wire harness 2 in the box body 202 and the electrical control component from becoming problematic due to the inadvertent pulling of the external wire harness 6 during the transportation, the disassembly, or the assembly of the electrical control box assembly 20.

[0081] According to some exemplary embodiments of the present disclosure, as illustrated in FIG. 16 and FIG. 20, the locking portions 313 positioned at the two circumferential ends of the wire fixing ring 312 are detachably connected to each other. For example, the locking portions 313 positioned at the two circumferential ends of the wire fixing ring 312 may be connected to each other by a fastener, or the locking portions 313 positioned at the two circumferential ends of the wire fixing ring 312 may be snap-fitted to each other. By enabling the locking portions 313 positioned at the two circumferential ends of the wire fixing ring 312 to be detachably connected to each other, the external wire harness 6 easily passes through the wire fixing ring 312 for fixation, or release and removal of the external wire harness 6 from the wire fixing ring 312 can be facilitated.

[0082] According to some exemplary embodiments of the present disclosure, as illustrated in FIG. 18 to FIG. 20, the box body 202 has the mounting hole 1123. The wire fixing ring 312 passes through the mounting hole 1123 in a circumferential direction of the fixing ring. In this way, the fastener can be omitted, and the external wire harness 6 is fixed through binding the external wire harness 6 by the wire clamp 31.

[0083] According to some exemplary embodiments of the present disclosure, as illustrated in FIG. 12 to FIG. 15, the fastener passes through the locking portion 313 and the mounting hole 1123. By passing the fastener through the locking portion 313 and the mounting hole 1123, the external wire harness 6 may be fixed relative to the wire clamp 31. By fixing the wire clamp 31 to the box body 202, the external wire harness 6 may be fixed to the box body 202. The manner of fixing by the fastener is simple and easy to operate.

[0084] In some exemplary embodiments of the present disclosure, the locking portions 313 positioned at the two circumferential ends of the wire fixing ring 312 and the mounting hole 1123 may be mounted and connected to each other by one fastener. That is, the fastener passes through the locking portions 313 positioned at the two circumferential ends of the wire fixing ring 312 and the mounting hole 1123, which can not only connect the locking portions 313 positioned at the two circumferential ends of the wire fixing ring 312, but also fix the wire clamp 31 to the box body 202, reducing the number of fasteners.

[0085] According to some exemplary embodiments of the present disclosure, as illustrated in FIG. 11 to FIG. 15, the wire harness 2 includes a plurality of sub-harnesses 7 having different functions. A plurality of wire clamps 31 are provided and divided into a plurality of wire clamp groups. Each of the plurality of wire clamp groups includes at least one wire clamp 31. The number of the plurality of wire clamp groups is equal to the number of the plurality of sub-harnesses 7. The plurality of wire clamp groups are in one-to-one correspondence with the plurality of sub-harnesses 7. The plurality of sub-harnesses 7 having different functions are routed separately and each fixed by a corresponding one of the plurality of wire clamp groups. By routing the plurality of sub-harnesses 7 having different functions separately and fixing the plurality of sub-harnesses 7 by corresponding wire clamp groups, mutual interference between the plurality of sub-harnesses 7 having different functions can be reduced or avoided, preventing service performance of the electrical control box assembly 20 from being affected due to the mutual interference.

[0086] According to some exemplary embodiments of the present disclosure, as illustrated in FIG. 11 to FIG. 15, the external wire harness 6 includes a water return bend segment 5 located between the wire outlet hole 13 and the fixing structure. When the electrical control box assembly 20 is mounted to the outdoor unit, the water return bend segment 5 bends downwards and a lowest part of the water return bend segment 5 is lower than the wire outlet hole 13. With the water return bend segment 5, by enabling the water return bend segment 5 to bend downwards and the lowest part of the water return bend segment 5 to be lower than the wire outlet hole 13, a liquid (e.g., condensed water) attached to the external wire harness 6 can gather along the water return bend segment 5 towards the lowest part of the water return bend segment 5. In this way, the liquid on the external wire harness 6 is prevented from entering the box body 202 through the wire outlet hole 13, avoiding an adverse effect on the electrical control component and the like in the box body 202.

[0087] As illustrated in FIG. 1 to FIG. 3, an outdoor unit 200 according to an embodiment in a third aspect of the present disclosure includes an outdoor unit housing 21, an outdoor heat exchanger 22, an outdoor fan 23, a compressor assembly, and the above electrical control box assembly 20. The electrical control box assembly 20 includes the above heat dissipator 100. The outdoor heat exchanger 22, the outdoor fan 23, the compressor assembly, and the electrical control box assembly 20 are disposed in the outdoor unit housing 21. The outdoor unit housing 21 has a fan chamber 212. The outdoor heat exchanger 22 and the outdoor fan 23 are disposed in the fan chamber 212.

[0088] In the outdoor unit 200 according to the embodiment of the present disclosure, the above electrical control box assembly 20 is provided. The electrical control box assembly 20 includes the heat dissipator 100. The wall surface of the heat dissipation substrate 10 of the heat dissipator 100 facing the heat dissipation channel 12 includes the plurality of channel wall surface segments arranged sequentially from top to bottom. In addition, the stepped wall surface 103 is connected between two adjacent channel wall surface segments. The obtuse angle is formed between the stepped wall surface 103 and the channel wall surface segment. In this way, in the process of the airflow flowing through the heat dissipation channel 12 of the heat dissipator 100, the obtuse angle formed between the stepped wall surface 103 and the channel wall surface segment can reduce the obstructive effect of the stepped wall surface 103 of the heat dissipation substrate 10 on the airflow entering the heat dissipation channel 12, reducing the adverse effect of the stepped wall surface 103 on the heat dissipation effect. Through being guided by the stepped wall surface 103, the airflow can smoothly flow through the heat dissipation channel 12 of the heat dissipator 100, which can improve the heat dissipation effect of the heat dissipator 100. As a result, regardless of whether the outdoor fan 23 in the fan chamber 212 rotates clockwise or counterclockwise, the airflow can smoothly flow through the heat dissipation channel 12, enhancing the versatility of the heat dissipator 100.

[0089] As illustrated in FIG. 1 to FIG. 3, according to some embodiments of the present disclosure, the outdoor unit housing 21 has a compressor chamber 211. The compressor assembly is disposed in the compressor chamber 211. The fan chamber 212 and the compressor chamber 211 are arranged in a left-right direction. A middle partition plate 213 is provided between the fan chamber 212 and the compressor chamber 211. The electrical control box assembly 20 is mounted at the middle partition plate 213. The electrical control box 201 is located in the compressor chamber 211. The channel wall surface 101 of the at least one heat dissipation channel 12 includes two channel wall surface segments arranged sequentially in the up-down direction. An upper channel wall surface segment of the two channel wall surface segments is a first channel wall surface segment 102. A lower channel wall surface segment of the two channel wall surface segments is a second channel wall surface segment 104. In the up-down direction, a lower part of the heat dissipator 100 is located closer to the outdoor fan 23 than an upper part of the heat dissipator 100. In the left-right direction, the second channel wall surface segment 104 is located closer to the compressor chamber 211 than the first channel wall surface segment 102. The stepped wall surface 103 between the second channel wall surface segment 104 and the first channel wall surface segment 102 extends obliquely upwards in a direction from the compressor chamber 211 to the fan chamber 212.

[0090] By forming the obtuse angle α1 between the first channel wall surface segment 102 and the stepped wall surface 103, or by forming the obtuse angle α2 between the stepped wall surface 103 and the second channel wall surface segment 104, or by forming the angle α1 between the first channel wall surface segment 102 and the stepped wall surface 103 and forming the obtuse angle α2 between the second channel wall surface segment 104 and the stepped wall surface 103, by enabling the second channel wall surface segment 104 to be located closer to the compressor chamber 211 than the first channel wall surface segment 102 in the left-right direction, and by allowing the stepped wall surface 103 to extend obliquely upwards in the direction from the compressor chamber 211 to the fan chamber 212, the obstructive effect of the stepped wall surface 103 of the channel wall surface 101 on the airflow in the heat dissipation channel 12 can be reduced when the outdoor fan 23 rotates in the counterclockwise direction and drives the airflow to flow from bottom to top through the heat dissipation channel 12. In this way, the adverse effect of the stepped wall surface 103 on the heat dissipation effect can be reduced, improving the heat dissipation effect of the heat dissipator 100. As a result, regardless of whether the outdoor fan 23 in the fan chamber 212 rotates clockwise or counter-clockwise, the airflow can smoothly flow through the heat dissipation channel 12, enhancing the versatility of the heat dissipator 100.

[0091] As illustrated in FIG. 1 to FIG. 3, according to some exemplary embodiments of the present disclosure, a surface of the heat dissipator 100 facing the fan chamber 212 includes an avoidance surface 13 for avoiding the outdoor fan 23. At least part of the avoidance surface 13 extends obliquely away from the outdoor fan 23 in a direction from top to bottom. For example, the entire avoidance surface 13 extends obliquely away from the outdoor fan 23 in the direction from top to bottom. For example, a part of the avoidance surface 13 extends obliquely away from the outdoor fan 23 in the direction from top to bottom, and another part of the avoidance surface 13 extends vertically in the direction from top to bottom. The avoidance surface 13 can ensure a predetermined safety gap between the heat dissipator 100 and the outdoor fan 23, to prevent a collision between the heat dissipator 100 and the outdoor fan 23, ensuring safety performance of the heat dissipator 100. Further, a heat dissipation and cooling effect of the outdoor fan 23 on the heat dissipator 100 can be ensured, and the heat dissipation efficiency of the heat dissipator 100 for the electrical control box 201 can be guaranteed.

[0092] As illustrated in FIG. 1 to FIG. 3, according to some exemplary embodiments of the present disclosure, the outdoor unit 200 includes a first air guide cover 25 located at a top of the heat dissipator 100. A first air guide cavity is defined by the first air guide cover 25 and the heat dissipator 100 together. Or, the first air guide cavity is defined by the first air guide cover 25, the heat dissipator 100 and the middle partition plate 213 together. The compressor chamber 211 is in communication with the heat dissipation channel 12 of the heat dissipator 100 through the first air guide cavity. The first air guide cover 25 can provide guidance for the airflow at the top of the heat dissipator 100. The outdoor fan 23 is configured to drive the airflow in the fan chamber 212 to flow outwards during the operation of the outdoor fan 23, which causes an air pressure in the fan chamber 212 to be lower than an air pressure in the compressor chamber 211. Since the compressor chamber 211 is in communication with the heat dissipation channel 12 through the first air guide cavity, and the heat dissipation channel 12 is in communication with the fan chamber 212, the airflow in the compressor chamber 211 can flow sequentially from top to bottom through the first air guide cavity and the heat dissipation channel 12 under an air pressure difference between the fan chamber 212 and the compressor chamber 211. In some exemplary embodiments of the present disclosure, when the outdoor fan 23 rotates in the clockwise direction, the outdoor fan 23 drives the airflow in the fan chamber 212 to flow and smoothly flow from top to bottom through the heat dissipation channel 12. In a process where the airflow in the compressor chamber 211 and flowing through the first air guide cover 25 and the airflow in the fan chamber 212 flow through the heat dissipation channel 12 in one direction, the airflows can exchange heat with adjacent heat dissipation fins 11. When flowing out of the heat dissipation channel 12, the airflows can carry away the heat from the heat dissipation fins 11. In this way, the heat dissipation effect of the heat dissipator 100 can be better achieved, which in turn improves the heat dissipation efficiency of the heat dissipator 100 for the electrical control box 201. In some exemplary embodiments of the present disclosure, when the outdoor fan 23 rotates in the counterclockwise direction, through being guided by the stepped wall surface 103, the outdoor fan 23 may drive the airflow in the fan chamber 212 to smoothly flow from bottom to top through the heat dissipation channel 12. In this case, in the heat dissipation channel 12, the airflow in the compressor chamber 211 and flowing through the first air guide cover 25 and the airflow in the fan chamber 212 flow in opposite directions. The airflow in the compressor chamber 211 and flowing through the first air guide cover 25 conforms to the flow direction of the airflow in the fan chamber 212 and is discharged from the heat dissipation channel 12. In this way, the heat dissipation effect of the airflow on the heat dissipator 100 is achieved.

[0093] As illustrated in FIG. 1 to FIG. 3, according to some exemplary embodiments of the present disclosure, the first air guide cover 25 has a first air guide opening 251 on a side of the first air guide cover 25 facing the compressor chamber 211. The airflow in the compressor chamber 211 is adapted to flow into the first air guide cavity through the first air guide opening 251 and flow downwards through the heat dissipation channel 12.

[0094] As illustrated in FIG. 1 to FIG. 3, according to some exemplary embodiments of the present disclosure, a surface of the first air guide cover 25 facing the fan chamber 212 is a first surface. A part of the first surface adjacent to the heat dissipator 100 is flush with the surface of the heat dissipator 100 facing the fan chamber 212. With such an arrangement, the airflow in the first air guide cavity can be ensured to flow into the heat dissipation channel 12 along the first air guide cover 25 under an action of the first air guide cover 25, better improving the heat dissipation effect of the outdoor fan 23 on the heat dissipator 100.

[0095] As illustrated in FIG. 3, according to some exemplary embodiments of the present disclosure, the outdoor unit 200 includes a second air guide cover 26. The second air guide cover 26 is located at a bottom of the heat dissipator 100. A second air guide cavity is defined by the second air guide cover 26 and the heat dissipator 100 together. Or, the second air guide cavity is defined by the second air guide cover 26, the heat dissipator 100 and the middle partition plate 213 together. The compressor chamber 211 is in communication with the heat dissipation channel 12 through the second air guide cavity. The second air guide cover 26 can provide guidance for the airflow at the bottom of the heat dissipator 100. The outdoor fan 23, when in operation, causes the air pressure in the fan chamber 212 to be lower than the air pressure in the compressor chamber 211. Since the compressor chamber 211 and the heat dissipation channel 12 are in communication with each other through the second air guide cavity, and the heat dissipation channel 12 is in communication with the fan chamber 212, the airflow in the compressor chamber 211 can flow sequentially from bottom to top through the first air guide cavity and the heat dissipation channel 12 under the air pressure difference between the fan chamber 212 and the compressor chamber 211. When the outdoor fan 23 rotates in the counterclockwise direction, through being guided by the stepped wall surface 103, the outdoor fan 23 drives the airflow in the fan chamber 212 to flow and smoothly flow from bottom to top through the heat dissipation channel 12. In a process where the airflow in the compressor chamber 211 and the airflow in the fan chamber 212 flow through the heat dissipation channel 12 in one direction, the airflows can exchange heat with adjacent heat dissipation fins 11. When flowing out of the heat dissipation channel 12, the airflows can carry away the heat from the heat dissipation fins 11. In this way, the heat dissipation effect of the heat dissipator 100 is achieved, which in turn improves the heat dissipation effect of the heat dissipator 100 on the electrical control box 201.

[0096] As illustrated in FIG. 3, according to some exemplary embodiments of the present disclosure, a surface of the second air guide cover 26 facing the fan chamber 212 is a second surface. A part of the second surface adjacent to the heat dissipator 100 is flush with the surface of the heat dissipator 100 facing the fan chamber 212. With such an arrangement, the airflow in the second air guide cavity can be ensured to flow into the heat dissipation channel 12 along the second air guide cover 26 under an action of the second air guide cover 26, better improving the heat dissipation effect of the outdoor fan 23 on the heat dissipator 100.

[0097] As illustrated in FIG. 3, according to some exemplary embodiments of the present disclosure, a lower end of the heat dissipator 100 is located in the second air guide cover 26. In this way, the airflow in the second air guide cavity can all flow along the heat dissipation channel 12 of the heat dissipator 100 under the action of the second air guide cover 26. As a result, a large amount of airflow flows in the heat dissipation channel 12. Thus, an amount of the heat exchanged between the airflow and adjacent heat dissipation fins 11 can be increased, achieving a better overall heat dissipation effect of the heat dissipator 100.

[0098] The heat dissipator 100, the electrical control box assembly 20, and the outdoor unit 200 according to some embodiments of the present disclosure will be described below with reference to FIG. 1, FIG. 2, and FIG. 4 to FIG. 10.

[0099] As illustrated in FIG. 1 and FIG. 2, in this embodiment, the outdoor unit 200 includes the outdoor unit housing 21, the outdoor heat exchanger 22, the outdoor fan 23, the compressor assembly, and the electrical control box assembly 20. The electrical control box assembly 20 includes the heat dissipator 100. The outdoor heat exchanger 22, the outdoor fan 23, the compressor assembly, and the electrical control box assembly 20 are disposed in the outdoor unit housing 21.

[0100] The outdoor unit housing 21 has the fan chamber 212 and the compressor chamber 211 that are spaced apart from each other in the left-right direction. The middle partition plate 213 is provided between the fan chamber 212 and the compressor chamber 211. The outdoor heat exchanger 22 and the outdoor fan 23 are disposed in the fan chamber 212. The compressor assembly is disposed in the compressor chamber 211. The electrical control box assembly 20 is mounted at the middle partition plate 213.

[0101] As illustrated in FIG. 1 to FIG. 5, the electrical control box assembly 20 includes the electrical control box 201 and the heat dissipator 100. The heat dissipator 100 is disposed at the electrical control box 201. The electrical control box 201 includes the box body 202 and the electrical control component. The heat dissipator 100 and the box body 202 of the electrical control box 201 are integrally formed. The electrical control component is disposed in the box body 202. The heat dissipator 100 includes the heat dissipation substrate 10. The heat dissipation substrate 10 is disposed at a side close to the electrical control box 201. The heat dissipation substrate 10 is formed as the part of the box body 202 of the electrical control box 201. The heat dissipation substrate 10 is formed as the profiled structure 106 adapted to the shape of the electrical control component. The profiled structure 106 conforms to a shape of the part of the electrical control component at the side of the electrical control component facing the heat dissipation substrate 10. The heat dissipation substrate 10 is thermally connected to or in thermal contact with the electrical control component. The heat dissipator 100 further includes the plurality of heat dissipation fins 11 disposed on the heat dissipation substrate 10. The plurality of heat dissipation fins 11 are arranged at uniform intervals in the front-rear direction. The plurality of heat dissipation channels 12 extending in the up-down direction are defined between the plurality of heat dissipation fins 11 and the heat dissipation substrate 10.

[0102] As illustrated in FIG. 6 to FIG. 10, the wall surface of the heat dissipation substrate 10 facing the heat dissipation channel 12 is the channel wall surface 101. The channel wall surface 101 of the plurality of heat dissipation channels 12 includes the first channel wall surface segment 102 and the second channel wall surface segment 104 that are arranged sequentially in the up-down direction. The first channel wall surface segment 102 is located at an upper side of the second channel wall surface segment 104. In the left-right direction, the second channel wall surface segment 104 is located closer to the compressor chamber 211 than the first channel wall surface segment 102. The stepped wall surface 103 is connected between the first channel wall surface segment 102 and the second channel wall surface segment 104. The rounded portion 105 is connected between the first channel wall surface segment 102 and the stepped wall surface 103. The rounded portion 105 is also connected between the second channel wall surface segment 104 and the stepped wall surface 103. Both the first channel wall surface segment 102 and the second channel wall surface segment 104 extend vertically in the up-down direction. In addition, the first channel wall surface segment 102 and the second channel wall surface segment 104 are arranged in parallel. The stepped wall surface 103 between the second channel wall surface segment 104 and the first channel wall surface segment 102 extends obliquely upwards in the direction from the compressor chamber 211 to the fan chamber 212. The angle α1 is formed between the stepped wall surface 103 and the first channel wall surface segment 102. The angle α2 is formed between the stepped wall surface 103 and the second channel wall surface segment 104. The angle α1 and the angle α2 are equal to each other. As illustrated in FIG. 9 and FIG. 10, a magnitude of the angle α1 between the stepped wall surface 103 and the first channel wall surface segment 102 and a magnitude of the angle α2 between the stepped wall surface 103 and the second channel wall surface segment 104 are different for at least two different heat dissipation channels 12.

[0103] As illustrated in FIG. 1 and FIG. 2, the outdoor unit 200 further includes the first air guide cover 25. The first air guide cover 25 is located at the top of the heat dissipator 100. The first air guide cavity is defined by the first air guide cover 25, the heat dissipator 100, and the middle partition plate 213 together. The first air guide cover 25 has the first air guide opening 251 on the side of the first air guide cover 25 facing the compressor chamber 211. The compressor chamber 211 is in communication with the heat dissipation channel 12 of the heat dissipator 100 through the first air guide cavity.

[0104] During the operation of the outdoor unit 200, the electrical control component is configured to control operations of components within the outdoor unit 200. The temperature of the electrical control component rises due to the heat generation during the operation of the electrical control component. The heat may be transferred by the electrical control component to the heat dissipator 100 through the heat dissipation substrate 10. Also, the heat may be transferred by the electrical control component to the heat dissipator 100 through the box body 202 of the electrical control box 201. When in operation, the outdoor fan 23 in the fan chamber 212 drives the airflow in the fan chamber 212 to flow. The airflow in the fan chamber 212 may flow from top to bottom through the heat dissipation channel 12, sequentially flowing through the first channel wall surface segment 102, the stepped wall surface 103, and the second channel wall surface segment 104. In addition, when in operation, the outdoor fan 23 also drives the airflow in the fan chamber 212 to flow outwards, causing the air pressure in the fan chamber 212 to be lower than the air pressure in the compressor chamber 211. Under the air pressure difference between the fan chamber 212 and the compressor chamber 211, the airflow in the compressor chamber 211 can sequentially flow from top to bottom through the first air guide cavity and the heat dissipation channel 12.

[0105] When the airflow in the compressor chamber 211 and flowing through the first air guide cover 25 and the airflow in the fan chamber 212 flow from top to bottom through the heat dissipation channel 12, the airflows can exchange heat with adjacent heat dissipation fins 11. When flowing out of the heat dissipation channel 12, the airflows can carry away the heat from the heat dissipation fins 11. In this way, the heat dissipation effect of the heat dissipator 100 is achieved, which in turn improves the heat dissipation effect of the heat dissipator 100 on the electrical control box 201.

[0106] The electrical control box assembly 20 according to some other embodiments of the present disclosure will be described below with reference to FIG. 3 to FIG. 10. In these embodiments, parts that are the same as those in the above embodiments will not be repeated, and reference may be made to the above embodiments. Differences of these embodiments from the above embodiments are mainly described.

[0107] In these embodiments, the outdoor unit 200 further includes the second air guide cover 26. Under the air pressure difference between the fan chamber 212 and the compressor chamber 211, the airflow in the compressor chamber 211 may also sequentially flow from bottom to top through the second air guide cavity and the heat dissipation channel 12. In addition, the outdoor fan 23 rotates in the counterclockwise direction in the fan chamber 212, and drives the airflow in the fan chamber 212 to flow. Through being guided by the stepped wall surface 103, the airflow in the fan chamber 212 smoothly flows from bottom to top through the heat dissipation channel 12, the second channel wall surface segment 104, the stepped wall surface 103, and the first channel wall surface segment 102. In the process where the airflow in the compressor chamber 211 and flowing through the second air guide cover 26 and the airflow in the fan chamber 212 flow through the heat dissipation channel 12 in one direction, the airflows can exchange heat with adjacent heat dissipation fins 11. When flowing out of the heat dissipation channel 12, the airflows can carry away the heat from the heat dissipation fins 11. In this way, the heat dissipation effect of the heat dissipator 100 is better achieved, which in turn improves the heat dissipation effect of the heat dissipator 100 on the electrical control box 201. The flow direction of the airflow entering the heat dissipation channel 12 through the first air guide cover 25 conforms to the flow direction of the airflow in the compressor chamber 211 and flowing through the second air guide cover 26 and the flow direction of the airflow in the fan chamber 212, and is discharged from the heat dissipation channel 12. In this way, the heat dissipation effect of the airflow on the heat dissipator 100 is achieved.

[0108] The electrical control box assembly 20 according to some other embodiments of the present disclosure is described below with reference to FIG. 11 to FIG. 16. In these embodiments, parts that are the same as those in the above embodiments will not be repeated, and reference may be made to the above embodiments. Differences of these embodiments from the above embodiments are mainly described.

[0109] As illustrated in FIG. 11 to FIG. 15, in these embodiments, the electrical control box assembly 20 further includes the wire harness 2 and the fixing structure. The fixing structure is configured to fix the wire harness 2 relative to the electrical control box 201.

[0110] The box body 202 includes the box main body 111 and the box cover 112. The box main body 111 has the accommodation space. The electrical control component is accommodated and disposed in the accommodation space of the box main body 111. The box main body 111 is formed to be open towards a side. The box cover 112 covers the box main body 111 at the open side of the box main body 111.

[0111] As illustrated in FIG. 13, the wire outlet hole 13 is formed in the peripheral wall of the box main body 111. The wire harness 2 extends to the outside of the box body 202 through the wire outlet hole 13. The end of the wire harness 2 located in the box body 202 is electrically connected to the electrical control component. The part of the wire harness 2 located outside the box body 202 is the external wire harness 6.

[0112] As illustrated in FIG. 14 and FIG. 15, the box cover 112 has a plurality of mounting holes 1123 arranged at intervals at a side of the box cover 112 adjacent to the wire outlet hole 13. The fixing structure includes the plurality of wire clamps 31 arranged at intervals. The plurality of wire clamps 31 are arranged corresponding to the plurality of mounting holes 1123. By passing the fastener through the wire clamp 31 and the mounting hole 1123, the wire clamp 31 is fixed at the mounting hole 1123 of the box body 202.

[0113] In an exemplary embodiment of the present disclosure, the wire clamp 31 includes the wire fixing ring 312 and the locking portion 313. The wire fixing ring 312 is in the shape of the open ring and defines the wire fixing hole 311. The locking portion 313 is connected to the two circumferential ends of the wire fixing ring 312. By passing the fastener through the locking portions 313 positioned at the two circumferential ends of the wire fixing ring 312 and the mounting hole 1123, the locking portions 313 positioned at the two circumferential ends of the wire fixing ring 312 can be connected to each other and the wire clamp 31 is connected to the box body 202.

[0114] As illustrated in FIG. 11 to FIG. 15, the electrical control box assembly 20 includes three sub-harnesses 7 having different functions. The three sub-harnesses 7 having different functions extend from different wire outlet holes 13 to the outside of the box body 202. The external wire harnesses 6 of the three sub-harnesses 7 having different functions are all routed along the side of the box cover 112 facing away from the box main body 111. The plurality of wire clamps 31 are divided into three groups of wire clamp groups. Each wire clamp group includes one wire clamp 31. The external wire harnesses 6 of the sub-harnesses 7 having different functions pass through the wire fixing holes 311 of the corresponding wire clamps 31, and are fixed to the wire clamps 31 by fasteners. In this way, the sub-harnesses 7 having different functions are fixed to the box body 202 separately.

[0115] As illustrated in FIG. 11 to FIG. 15, the external wire harness 6 of each of the three sub-harnesses 7 having different functions includes the water return bend segment 5. The water return bend segment 5 is located between the wire outlet hole 13 and the fixing structure. When the electrical control box assembly 20 is mounted to the outdoor unit, the water return bend segment 5 bends downwards and the lowest part of the water return bend segment 5 is lower than the wire outlet hole 13.

[0116] The electrical control box assembly 20 according to some other embodiments of the present disclosure is described below with reference to FIG. 17 to FIG. 20. In these embodiments, parts that are the same as those in the above embodiments will not be repeated, and reference may be made to the above embodiments. Differences of these embodiments from the above embodiments are mainly described.

[0117] In these embodiments, the box cover 112 of the box body 202 includes the cover main body 1121 and the extension portion 1122. The extension portion 1122 is located at a side of the cover main body 1121 adjacent to the wire outlet hole 13. The wiring space 4 is defined between the extension portion 1122 and the peripheral wall of the box main body 111. The extension portion 1122 has the plurality of mounting holes 1123 arranged at intervals. The wire fixing ring 312 of the wire clamp 31 passes through the mounting hole 1123 in the circumferential direction of the fixing ring. The locking portions 313 positioned at the two circumferential ends of the wire fixing ring 312 are snap-fitted to each other. In this way, the wire clamp 31 is fixed to the box body 202. The three sub-harnesses 7 having different functions extend out of the box body 202 through different wire outlet holes 13, and are all routed along a side of the wiring space 4 facing the box body 202.

[0118] A heating and ventilation device according to an embodiment in a fourth aspect of the present disclosure includes the outdoor unit 200 according to the embodiment in the third aspect of the present disclosure. For example, the heating and ventilation device may be a heat pump system, an air conditioning system, or the like.

[0119] In heating and ventilation device according to the embodiment of the present disclosure, the above outdoor unit 200 is provided. The outdoor unit 200 includes the electrical control box assembly 20. The electrical control box assembly 20 includes the heat dissipator 100. The wall surface of the heat dissipation substrate 10 of the heat dissipator 100 facing the heat dissipation channel 12 includes the plurality of channel wall surface segments arranged sequentially from top to bottom. In addition, the stepped wall surface 103 is connected between two adjacent channel wall surface segments. The obtuse angle is formed between the stepped wall surface 103 and the channel wall surface segment. In this way, in the process of the airflow flowing through the heat dissipation channel 12 of the heat dissipator 100, the obtuse angle formed between the stepped wall surface 103 and the channel wall surface segment can reduce the obstructive effect of the stepped wall surface 103 of the heat dissipation substrate 10 on the airflow entering the heat dissipation channel 12, reducing the adverse effect of the stepped wall surface 103 on the heat dissipation effect. Through being guided by the stepped wall surface 103, the airflow can smoothly flow through the heat dissipation channel 12 of the heat dissipator 100, which can improve the heat dissipation effect of the heat dissipator 100. As a result, regardless of whether the outdoor fan 23 in the fan chamber 212 rotates clockwise or counterclockwise, the airflow can smoothly flow through the heat dissipation channel 12, enhancing the versatility of the heat dissipator 100.

[0120] In the description of the present disclosure, it should be understood that, the orientation or the position indicated by terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "over", "below", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", and "circumferential" should be construed to refer to the orientation and the position as shown in the drawings, and is only for the convenience of describing the present disclosure and simplifying the description, rather than indicating or implying that the pointed device or element must have a specific orientation, or be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present disclosure.

[0121] In the description of the present disclosure, "plurality" means two or more.

[0122] In the description of the present disclosure, "first feature" and "second feature" may include one or more of these features.

[0123] In the description of the present disclosure, the first feature "on" or "under" the second feature may mean that the first feature is in direct contact with the second feature, or the first and second features are in indirect contact through another feature between them.

[0124] In the description of the present disclosure, the first feature "above" the second feature means that the first feature is directly above or obliquely above the second feature, or simply means that the level of the first feature is higher than that of the second feature.

[0125] Reference throughout this specification to "an embodiment", "some embodiments", "illustrative embodiments", "an example", "a specific example", or "some examples" means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present disclosure. The appearances of the above phrases in various places throughout this specification are not necessarily referring to the same embodiment or example. Further, the particular features, structures, materials, or characteristics may be combined in any suitable manner in one or more embodiments or examples.

[0126] Although embodiments of the present disclosure have been illustrated and described, it is conceivable for those skilled in the art that various changes, modifications, replacements, and variations can be made to these embodiments without departing from the principles and spirit of the present disclosure. The scope of the present disclosure shall be defined by the claims as appended and their equivalents.

Examples

Embodiment Construction

[0042]Embodiments of the present disclosure will be described in detail below with reference to examples thereof as illustrated in the accompanying drawings, throughout which same or similar elements, or elements having same or similar functions, are denoted by same or similar reference numerals. The embodiments described below with reference to the drawings are illustrative only, and are intended to explain, rather than limit, the present disclosure.

[0043]A heat dissipator 100, an electrical control box assembly 20, an outdoor unit 200, and a heating and ventilation device according to the embodiments of the present disclosure are described below with reference to FIG. 1 to FIG. 10.

[0044]As illustrated in FIG. 1 to FIG. 10, the heat dissipator 100 according to an embodiment in a first aspect of the present disclosure is used for the electrical control box assembly 20. The electrical control box assembly 20 is applied in the outdoor unit 200. The heat dissipator 100 is at least part...

Claims

1. A heat dissipator for an electrical control box assembly applied in an outdoor unit, wherein the heat dissipator is at least partially located in a fan chamber of the outdoor unit and comprises: a heat dissipation substrate; and a plurality of heat dissipation fins disposed on the heat dissipation substrate, wherein: at least one heat dissipation channel is defined between the plurality of heat dissipation fins and the heat dissipation substrate, each of the at least one heat dissipation channel extending in an up-down direction; the heat dissipation substrate is adapted to be thermally connected to or in thermal contact with an electrical control component of the electrical control box assembly; a wall surface of the heat dissipation substrate facing the at least one heat dissipation channel serves as a channel wall surface; and the channel wall surface of at least one heat dissipation channel comprises a plurality of channel wall surface segments arranged sequentially in the up-down direction, a stepped wall surface being connected between two adjacent channel wall surface segments of the plurality of channel wall surface segments, wherein an angle formed between the stepped wall surface and each of the two adjacent channel wall surface segments is an obtuse angle.

2. The heat dissipator according to claim 1, wherein the angle formed between the stepped wall surface and the adjacent channel wall surface segment ranges from 95° to 170°.

3. The heat dissipator according to claim 2, wherein the angle formed between the stepped wall surface and the adjacent channel wall surface segment ranges from 115° to 150°.

4. The heat dissipator according to any one of claims 1 to 3, wherein a joint between the stepped wall surface and the adjacent channel wall surface segment is formed as a rounded portion.

5. The heat dissipator according to any one of claims 1 to 4, wherein at least one of the plurality of channel wall surface segments extends vertically.

6. The heat dissipator according to any one of claims 1 to 5, wherein: an angle formed between the stepped wall surface of one of at least two heat dissipation channels and its respective adjacent channel wall surface segment is different from an angle formed between the stepped wall surface of another one of the at least two heat dissipation channels and its respective adjacent channel wall surface segment; and / or each of the at least one heat dissipation channel has a plurality of stepped wall surfaces, wherein an angle formed between one of the plurality of stepped wall surfaces and its respective adjacent channel wall surface segment is different from an angle formed between another one of the plurality of stepped wall surfaces and its respective adjacent channel wall surface segment.

7. The heat dissipator according to any one of claims 1 to 6, wherein at least part of the heat dissipation substrate is formed as a profiled structure adapted to a shape of the electrical control component, the profiled structure conforming to a shape of a part of the electrical control component at a side of the electrical control component facing the heat dissipation substrate.

8. An electrical control box assembly, comprising: an electrical control box comprising a box body and an electrical control component disposed at the box body; and the heat dissipator according to any one of claims 1 to 7, the heat dissipator being disposed at the electrical control box.

9. The electrical control box assembly according to claim 8, wherein the heat dissipator and the box body are integrally formed.

10. The electrical control box assembly according to claim 8, further comprising: a wire harness, an end of the wire harness being located in the box body and electrically connected to the electrical control component, wherein a wire outlet hole is formed on the box body, the wire harness extending out of the box body through the wire outlet hole, wherein a part of the wire harness located outside the box body is an external wire harness; and a fixing structure disposed at the box body and configured to fix the external wire harness.

11. The electrical control box assembly according to claim 10, wherein the fixing structure is detachably connected to the box body.

12. The electrical control box assembly according to claim 10 or 11, wherein the box body comprises: a box main body; and a box cover disposed at an open side of the box main body, the box cover comprising a cover main body and an extension portion, the cover main body being opposite to the box main body, and the extension portion being connected to an outer peripheral side of the cover main body and protruding beyond an outer peripheral side of the box main body, wherein: the wire outlet hole is formed in a peripheral wall of the box main body; and the fixing structure is disposed at the extension portion.

13. The electrical control box assembly according to claim 12, wherein the extension portion has a mounting hole for mounting the fixing structure.

14. The electrical control box assembly according to claim 12 or 13, wherein: the extension portion is connected to the cover main body at a side of the cover main body; and the wire outlet hole and the extension portion are located on a same side of the box body.

15. The electrical control box assembly according to claim 14, wherein: a wiring space is defined between the extension portion and the peripheral wall of the box main body, the external wire harness being routed along the wiring space; or the external wire harness is routed along a side of the box cover facing away from the box main body.

16. The electrical control box assembly according to any one of claims 10 to 15, wherein the fixing structure comprises at least one wire clamp, wherein each of the at least one wire clamp has a wire fixing hole for the external wire harness to pass through the wire fixing hole.

17. The electrical control box assembly according to claim 16, wherein each of the at least one wire clamp comprises: a wire fixing ring in a shape of an open ring, the wire fixing hole being defined by the wire fixing ring; and a locking portion connected to two circumferential ends of the wire fixing ring, wherein the locking portions positioned at the two circumferential ends of the wire fixing ring are connected to each other.

18. The electrical control box assembly according to claim 17, wherein the locking portions positioned at the two circumferential ends of the wire fixing ring are detachably connected to each other.

19. The electrical control box assembly according to claim 18, wherein the locking portions positioned at the two circumferential ends of the wire fixing ring are snap-fitted to each other or connected to each other by a fastener.

20. The electrical control box assembly according to claim 17, wherein the box body has a mounting hole, wherein: the wire fixing ring passes through the mounting hole in a circumferential direction of the fixing ring; or a fastener passes through the locking portion and the mounting hole.

21. The electrical control box assembly according to any one of claims 16 to 20, wherein: the wire harness comprises a plurality of sub-harnesses having different functions; the fixing structure comprises a plurality of wire clamps divided into a plurality of wire clamp groups, each of the plurality of wire clamp groups comprising at least one wire clamp; the number of the plurality of wire clamp groups is equal to the number of the plurality of sub-harnesses, the plurality of wire clamp groups being in one-to-one correspondence with the plurality of sub-harnesses; and the plurality of sub-harnesses having different functions are routed separately and each fixed by a corresponding one of the plurality of wire clamp groups.

22. The electrical control box assembly according to any one of claims 10 to 21, wherein: the external wire harness comprises a water return bend segment located between the wire outlet hole and the fixing structure; and when the electrical control box assembly is mounted to an outdoor unit, the water return bend segment bends downwards and a lowest part of the water return bend segment is lower than the wire outlet hole.

23. The electrical control box assembly according to any one of claims 10 to 21, wherein the box body is filled with a potting structure.

24. An outdoor unit, comprising: an outdoor unit housing having a fan chamber; an outdoor heat exchanger and an outdoor fan that are disposed in the fan chamber; a compressor assembly disposed in the outdoor unit housing; and the electrical control box assembly according to any one of claims 8 to 23, the electrical control box assembly being disposed in the outdoor unit housing.

25. The outdoor unit according to claim 24, wherein: the outdoor unit housing has a compressor chamber, the compressor assembly being disposed in the compressor chamber, the fan chamber and the compressor chamber being arranged in a left-right direction, wherein a middle partition plate is provided between the fan chamber and the compressor chamber, the electrical control box assembly being mounted at the middle partition plate, and the electrical control box being located in the compressor chamber; and the channel wall surface of the at least one heat dissipation channel comprises two channel wall surface segments arranged sequentially in the up-down direction, wherein an upper channel wall surface segment of the two channel wall surface segments is a first channel wall surface segment, and a lower channel wall surface segment of the two channel wall surface segments is a second channel wall surface segment, wherein: in the up-down direction, a lower part of the heat dissipator is located closer to the outdoor fan than an upper part of the heat dissipator; in the left-right direction, the second channel wall surface segment is located closer to the compressor chamber than the first channel wall surface segment; and the stepped wall surface between the second channel wall surface segment and the first channel wall surface segment extends obliquely upwards in a direction from the compressor chamber to the fan chamber.

26. A heating and ventilation device, comprising the outdoor unit according to claim 24 or 25.

Images