Air conditioner outdoor unit

Abstract

The present application discloses an air-conditioning outdoor unit, which belongs to the field of air-conditioning technology. The air-conditioning outdoor unit includes: a driving plate assembly; the driving plate assembly includes: a power module, including a first power module and a second power module, the heat generation of the first power module is greater than that of the second power module; a driving radiator and a refrigerant radiator; wherein the surface of the driving radiator facing the refrigerant radiator is called the first mating surface, and the first mating surface can be divided into a first area, a second area and a third area; on the projection of the first mating surface, the first power module is located in the first area; the third area is adjacent to the second power module, and the second power module is located in the second area, or the third area overlaps with part of the second power module, and the other part of the second power module overlaps with the second area; the first area and the third area are both in contact with the refrigerant radiator; there is a gap between the second area and the refrigerant radiator. The air-conditioning outdoor unit can make the surface temperature of the radiator balanced.

Description

Technical Field

[0001] The present application relates to the technical field of air conditioning, and in particular to an air conditioning outdoor unit. Background Art

[0002] The power modules of the compressor and outdoor fan of the air conditioner are usually installed in the electrical box of the outdoor unit. In order to improve the heat dissipation efficiency of the power module, the refrigerant heat dissipation method is generally used to dissipate the heat of the power module. One side of the driver radiator is attached to the power module, and the other side is attached to the refrigerant radiator for heat transfer. Because different power modules have different heat generation, the heat distribution on the radiator surface will be uneven. In some extreme cases, condensation may appear on the radiator surface. Utility Model Content

[0003] The present application provides an air-conditioning outdoor unit, which can balance the surface temperature of the radiator.

[0004] In one aspect of the present application, an air conditioner outdoor unit includes: an electrical box, a driving board assembly is arranged in the electrical box; the driving board assembly includes: a driving substrate; a power module connected to the driving substrate, the power module includes a first power module and a second power module, the heat generation of the first power module is greater than that of the second power module; a driving radiator, attached to the power module; a refrigerant radiator, abutting against a side of the driving radiator away from the power module;

[0005] Among them, the surface of the driving radiator facing the refrigerant radiator is called the first mating surface, and the first mating surface can be divided into a first area, a second area and a third area; on the projection of the first mating surface, the first power module is located in the first area; the third area is adjacent to the second power module, and the second power module is located in the second area, or the third area overlaps with part of the second power module, and the other part of the second power module overlaps with the second area;

[0006] The first area and the third area are both in contact with the refrigerant radiator; and there is a gap between the second area and the refrigerant radiator.

[0007] In some embodiments, the third region is adjacent to an end of the second power module away from the first power module, or the third region coincides with an end of the second power module away from the first power module.

[0008] In some embodiments, the portion where the second power module overlaps with the second region is the first portion, the portion where the second power module overlaps with the third region is the second portion, and the area of ​​the first portion is larger than that of the second portion.

[0009] In some embodiments, the first region and the third region protrude beyond the second region.

[0010] In some embodiments, the first power module and the second power module are arranged along the first direction, and the first area and the second area are divided along the first direction; the edge on the first mating surface away from the first area is the first edge, and the second area extends to the first edge; when the drive board assembly is installed vertically, the first edge is the lower edge of the first mating surface.

[0011] In some embodiments, the first power module and the second power module are arranged along the first direction, and the first area and the second area are divided along the first direction; the edge of the first mating surface away from the first area is the first edge, and an edge of the first mating surface adjacent to the first edge is the second edge, and a guide rib protruding toward the direction close to the refrigerant radiator is provided at the second edge, and a guide slope is provided on the guide rib;

[0012] When the driving plate assembly is installed horizontally, the guide rib is located at the lower side of the first matching surface.

[0013] In some embodiments, the guide rib corresponds to the lower part of the second area.

[0014] In some embodiments, a thermal interface material is filled between the first region and the coolant radiator, and no thermal interface material is filled between the third region and the coolant radiator.

[0015] In some embodiments, the surface of the driver heat sink facing the power module is called a second mating surface, and a thermal insulation pad is attached to the second mating surface; in the projection of the second mating surface, the thermal insulation pad and the power module do not overlap.

[0016] In another aspect of the present application, an air conditioner outdoor unit includes: an electrical box, a drive board assembly is arranged in the electrical box; the drive board assembly includes: a drive substrate; a power module connected to the drive substrate, the power module includes a first power module and a second power module, the first power module is a compressor power module, and the second power module is a fan drive module; a drive radiator, which is attached to the power module; a refrigerant radiator, which abuts against a side of the drive radiator away from the power module;

[0017] Among them, the surface of the driving radiator facing the refrigerant radiator is called the first mating surface, and the first mating surface can be divided into a first area, a second area and a third area; on the projection of the first mating surface, the first power module is located in the first area; the third area is adjacent to the second power module, and the second power module is located in the second area, or the third area overlaps with part of the second power module, and the other part of the second power module overlaps with the second area;

[0018] The first area and the third area are both in contact with the refrigerant radiator; and there is a gap between the second area and the refrigerant radiator. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 and Figure 2 shows a perspective view of an air conditioner outdoor unit according to some embodiments;

[0020] Figure 3 shows an internal structure diagram of an air conditioner outdoor unit according to some embodiments;

[0021] Figure 4 A perspective view of a drive plate assembly of an air conditioner outdoor unit according to some embodiments is shown;

[0022] Figure 5 An exploded view of a drive plate assembly of an air conditioner outdoor unit according to some embodiments is shown;

[0023] Figure 6 A perspective view showing a driving radiator of an air conditioner outdoor unit according to some embodiments;

[0024] Figures 7 to 9 A front view of a driving radiator of an outdoor unit of an air conditioner according to some embodiments is shown;

[0025] Fig.10 shows a side view of a driving radiator and a power module of an air conditioner outdoor unit according to some embodiments;

[0026] In the above figures, 10, casing; 11, top cover; 12, bottom plate; 13, right side plate; 14, front side plate; 15, rear side plate; 16, middle partition; 181, fan cavity; 182, compressor cavity; 20, outdoor heat exchanger; 30, fan; 31, motor bracket; 40, electrical box; 50, drive board assembly; 51, power module; 511, first power module; 512, second power module; 52, drive substrate; 53, drive radiator; 531, first mating surface; 532, first area; 533, second area; 534, third area; 535, fourth area; 536, first edge; 537, second edge; 538, guide rib; 539, second mating surface; 5391, insulation pad; 54, refrigerant radiator; 541, heat sink; 542, refrigerant heat pipe. DETAILED DESCRIPTION

[0027] In order to make the purpose and implementation method of the present application clearer, the exemplary implementation method of the present application will be clearly and completely described below in conjunction with the drawings in the exemplary embodiments of the present application. Obviously, the described exemplary embodiments are only part of the embodiments of the present application, rather than all the embodiments.

[0028] In the description of the present application, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0029] The terms "first", "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise specified, "plurality" means two or more.

[0030] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0031] The air conditioner in this application performs a refrigeration cycle of the air conditioner by using a compressor, a condenser, an expansion valve and an evaporator. The refrigeration cycle includes a series of processes involving compression, condensation, expansion and evaporation, and supplies refrigerant to the air that has been conditioned and heat-exchanged.

[0032] The compressor compresses the refrigerant gas in a low temperature and low pressure state and discharges the compressed refrigerant gas. The discharged refrigerant gas flows into the condenser. The condenser condenses the compressed refrigerant into a liquid phase, and the heat is released to the surrounding environment through the condensation process.

[0033] The expansion valve expands the high-temperature and high-pressure liquid refrigerant condensed in the condenser into a low-pressure liquid refrigerant. The evaporator evaporates the refrigerant expanded in the expansion valve and returns the refrigerant gas in a low-temperature and low-pressure state to the compressor. The evaporator can achieve a refrigeration effect by utilizing the latent heat of evaporation of the refrigerant to exchange heat with the material to be cooled. In the entire cycle, the air conditioner can adjust the temperature of the indoor space.

[0034] The outdoor unit of the air conditioner refers to a portion of a refrigeration cycle including a compressor and an outdoor heat exchanger, the indoor unit of the air conditioner includes an indoor heat exchanger, and an expansion valve may be provided in the indoor unit or the outdoor unit.

[0035] The indoor heat exchanger and the outdoor heat exchanger function as a condenser or an evaporator. When the indoor heat exchanger functions as a condenser, the air conditioner functions as a heater in a heating mode, and when the indoor heat exchanger functions as an evaporator, the air conditioner functions as a cooler in a cooling mode.

[0036] Reference Figures 1 to 3 According to an embodiment of the present application, an air conditioner outdoor unit includes a casing 10 in which a plurality of components constituting a refrigeration cycle are installed.

[0037] The cabinet 10 includes a top cover 11 defining a top structure, a bottom plate 12 defining a bottom structure, a right side plate 13 connected between the top cover 11 and the bottom plate 12 , a front side plate 14 , and a rear side plate 15 .

[0038] A middle partition 16 is provided in the casing 10 , and the middle partition 16 divides the space in the casing 10 into a fan chamber 181 and a compressor chamber 182 arranged on the left and right.

[0039] The front end of the middle partition plate 16 may be connected to the front side plate 14 , and the rear end of the middle partition plate 16 may be connected to the end plate of the outdoor heat exchanger 20 .

[0040] The rear side plate 15 may be provided with an air inlet, which is communicated with the fan cavity 181 for supplying outdoor air into the fan cavity 181. The front side plate 14 may be provided with an air outlet, which is communicated with the fan cavity 181 for supplying air from the fan cavity 181 to flow out.

[0041] The outdoor unit of the air conditioner may include an outdoor heat exchanger 20, which is disposed corresponding to the air inlet and performs heat exchange with the air sucked in through the air inlet.

[0042] The outdoor heat exchanger 20 can be a fin-type heat exchanger, which specifically includes a refrigerant pipe arranged in an S-shape and fins inserted into the refrigerant pipe. The refrigerant pipe is connected to the refrigerant pipe of the indoor heat exchanger through a pipeline, and is mainly used to circulate the refrigerant. The heat on the refrigerant pipe will be transferred to the fins, and the fins are mainly used to exchange heat with the air passing through it.

[0043] The air conditioner outdoor unit may include a fan 30. The fan 30 is disposed in the fan chamber 181 and may be located between the outdoor heat exchanger 20 and the air outlet. The fan 30 is connected to the housing 10 through a fan bracket.

[0044] Driven by the fan 30 , outdoor air enters the casing 10 from the air inlet, exchanges heat with the outdoor heat exchanger 20 , and is then sent out from the air outlet.

[0045] The air conditioner outdoor unit includes components such as a compressor and an expansion valve, which are arranged in the compressor chamber 182.

[0046] The air conditioner outdoor unit may include an electrical box 40. The electrical box 40 may be disposed on the top of the compressor cavity 182; or, the electrical box 40 may span the tops of the fan cavity 181 and the compressor cavity 182, that is, a portion of the electrical box 40 is located in the fan cavity 181, and another portion is located in the compressor cavity 182.

[0047] Reference Figure 4 and Figure 5 , a driving board assembly 50 is provided in the electrical box 40. The driving board assembly 50 includes a power module 51 and a driving substrate 52. The power module 51 provides power drive for power components such as the air-conditioning compressor and the fan 30. The driving current varies according to the operating power of different components, so the heat generation also varies. The power module 51 is connected to the driving substrate 52, and the circuit on the driving substrate 52 provides auxiliary control and connection port functions for the power module 51.

[0048] The power module 51 includes a first power module 511 and a second power module 512 having different heat generation. The first power module 511 has a higher heat generation than the second power module 512.

[0049] Specifically, the first power module 511 may be a compressor power module, and the second power module 512 may be a fan drive module.

[0050] The driving board assembly 50 includes a driving radiator 53 . The driving radiator 53 is closely attached to the power module 51 . The heat generated by the power module 51 is transferred to the driving radiator 53 .

[0051] The driving board assembly 50 includes a refrigerant radiator 54. The refrigerant radiator 54 includes a heat sink 541 and a refrigerant heat pipe 542 fixed on the heat sink 541. The heat sink 541 is in close contact with the side of the driving radiator 53 away from the power module 51.

[0052] The heat generated by the power module 51 is transferred to the driving radiator 53, and the heat on the driving radiator 53 is further transferred to the refrigerant radiator 54. The refrigerant circulating in the refrigerant radiator 54 takes away the heat, thereby achieving heat dissipation for the power module 51.

[0053] The power module 51, the driving radiator 53, and the refrigerant radiator 54 are tightened and pressed by screws to achieve a close fit between the mating surfaces.

[0054] For the convenience of processing, the refrigerant flow channels in the refrigerant radiator 54 are evenly and symmetrically distributed, and the heat absorption capacity of each part of the refrigerant radiator 54 is relatively balanced. However, due to the difference in the heat generation of different power modules 51, the surface temperature of the driver radiator 53 will be different. In some extreme working conditions or when the refrigerant temperature control fails, the surface temperature of the radiator may be lower than the dew point temperature, resulting in condensation, which will drip or spread to the pins of the power module 51 or the surface circuit of the driver substrate 52, causing hidden dangers such as short circuit.

[0055] The present application divides and differentiates the mating surface between the refrigerant radiator 54 and the driving radiator 53 according to the heat loads in different areas.

[0056] For the convenience of description, refer to Figure 6 and Figure 7 , the side surface of the driving radiator 53 facing the refrigerant radiator 54 is called the first matching surface 531.

[0057] The first mating surface 531 may be divided into two areas: a first area 532 and a fourth area 535 . The first area 532 corresponds to the first power module 511 , and the fourth area 535 corresponds to the second power module 512 .

[0058] In the projection of the first mating surface 531 , the first power module 511 is located in the first area 532 , and the second power module 512 is located in the fourth area 535 .

[0059] The fourth area 535 can be further divided into a second area 533 and a third area 534. On the projection of the first mating surface 531, the third area 534 overlaps with a portion of the second power module 512, and the portion of the fourth area 535 excluding the third area 534 is the second area 533.

[0060] The first region 532 and the third region 534 are in contact with the coolant radiator 54 , and a gap is provided between the second region 533 and the coolant radiator 54 .

[0061] The first region 532 corresponds to the first power module 511 with a higher heat generation, and is closely attached to the refrigerant radiator 54 . The heat of the first region 532 is directly transferred to the refrigerant radiator 54 .

[0062] There is an air gap between the second region 533 and the refrigerant radiator 54 , and heat conduction does not occur directly between this region and the refrigerant radiator 54 .

[0063] The third region 534 is in close contact with the refrigerant radiator 54 , and the heat of the third region 534 is directly transferred to the refrigerant radiator 54 .

[0064] In other embodiments, the third region 534 is disposed adjacent to the second power module 512 .

[0065] Due to the existence of the air gap between the second area 533 and the refrigerant radiator 54, the path for heat transfer from the second area 533 to the refrigerant radiator 54 is extended, the thermal resistance is increased, and the surface temperature of the radiator near the transfer path is increased, thereby reducing the temperature difference between the first area 532 and the fourth area 535 and avoiding the formation of condensation.

[0066] According to an embodiment of the present application, on the projection of the first mating surface 531, the area of ​​the first region 532 may be larger than the area of ​​the first power module 511; the area of ​​the fourth region 535 may be larger than the area of ​​the second power module 512, so as to ensure that various parts of the power module 51 transfer heat to the driving heat sink 53 at the same time.

[0067] In some embodiments, if the third region 534 is closer to the power module 51, that is, the third region 534 is closer to the first region 532, since the temperature of the first region 532 is higher than that of the third region 534 and the two regions are closer, it is easier to form a temperature difference on the surface of the driving heat sink.

[0068] Therefore, the farther the third region 534 is from the power module 51 , the more significant its effect on the uniform heat sink surface temperature.

[0069] In the present application, the third region 534 is disposed adjacent to the end of the second power module 512 away from the first power module 511. The first region 532 and the third region 534 are separated by the second region 533. In this way, the distance from the third region 534 to the power module 51 can be increased.

[0070] Exemplarily, the first power module 511 and the second power module 512 are arranged left and right, with the first power module 511 located on the right and the second power module 512 located on the left.

[0071] The first mating surface 531 is divided into a first area 532 and a fourth area 535 arranged on the left and right. The first area 532 is located on the right side, and the fourth area 535 is located on the left side. The third area 534 is close to the left end of the fourth area 535.

[0072] There may be two second power modules 512 arranged on the left and right sides, and the third area 534 may overlap with a portion of the second power module 512 on the left side.

[0073] In some embodiments, on the projection of the first mating surface 531, the portion where the second power module 512 overlaps with the second region 533 is the first portion, and the portion where the second power module 512 overlaps with the third region 534 is the second portion, and the area of ​​the first portion is greater than the area of ​​the second portion. In other words, the third region 534 overlaps with a small portion of the second power module 512. The less the third region 534 overlaps with the second power module 512, the more the heat transfer path can be extended.

[0074] According to an embodiment of the present application, the second region 533 is recessed in the first region 532 (and the third region 534 ), so that a gap is formed between the second region 533 and the refrigerant radiator 54 .

[0075] In other embodiments, the second region 533 is coplanar with the first region 532 and the third region 534 , and a portion of the refrigerant radiator 54 corresponding to the second region 533 is concave, thereby forming a gap between the second region 533 and the refrigerant radiator 54 .

[0076] In some embodiments, reference Figure 8 and Fig. 9 The first power module 511 and the second power module 512 are arranged along the first direction, and the first area 532 and the fourth area 535 are divided along the first direction. The edge of the first mating surface 531 away from the first area 532 is the first edge 536. The second area 533 extends to the first edge 536.

[0077] Specific reference Figure 8 When the driving board assembly 50 is installed vertically, the first direction is the up-down direction, the second power module 512 is located below the first power module 511 , and the first edge 536 is the lower edge of the first mating surface 531 .

[0078] Since the second area 533 extends to the first edge 536, the gap between the second area 533 and the coolant radiator 54 extends to the lower edge. Even when condensed water accumulates on the surface of the coolant radiator 54, the condensed water can be discharged through the lower air gap.

[0079] The second area 533 is distributed at the left and right ends of the third area 534 and the upper end of the third area 534. Condensed water can be discharged along the interval between the left and right ends of the third area 534.

[0080] In some embodiments, specific reference is made to Figure 6 and Fig. 9 The edge of the first mating surface 531 adjacent to the first edge 536 is the second edge 537. The second edge 537 is provided with a guide rib 538 protruding outward.

[0081] When the driving board assembly 50 is installed horizontally, that is, the first direction is the left-right direction, the second edge 537 is the lower edge of the first mating surface 531. By providing a guide rib 538 at the lower end of the driving radiator 53, condensed water can be guided out.

[0082] Assume that the coolant radiator 54 is located in front of the driving radiator 53. The guide rib 538 is formed by the lower end of the first mating surface 531 protruding toward the front side.

[0083] The upper end surface of the guide rib 538 has a slope, which slopes downward from the back to the front, so that the condensed water can be discharged forward.

[0084] The guide rib 538 corresponds to the lower part of the second area 533 , and can guide the condensed water in the gap between the second area 533 and the refrigerant radiator 54 .

[0085] The guide ribs 538 can position the refrigerant radiator 54 , thereby improving the assembly efficiency of the refrigerant radiator 54 and the driving radiator 53 .

[0086] In some embodiments, a thermal interface material may be filled between the first region 532 and the refrigerant radiator 54 to enhance the heat transfer capability. The thermal interface material may be silicone grease. The first region 532 corresponds to the first power module 511 with a higher heat generation. After the heat transfer capability is enhanced, the heat of the first power module 511 can be quickly transferred to the refrigerant radiator 54.

[0087] No thermal interface material is required between the third region 534 and the refrigerant radiator 54. Since the third region 534 corresponds to the second power module 512 with a lower heat generation, the heat transfer capacity is not enhanced relative to the first region 532, which slows down the heat transfer rate from the third region 534 to the refrigerant radiator 54, and the temperature of the fourth region 535 increases, thereby reducing the temperature difference between the fourth region 535 and the first region 532, and thus reducing the probability of condensed water generation.

[0088] In some embodiments, reference Fig.10 The surface of the driving heat sink 53 that is in contact with the power module 51 is a second mating surface 539, and a heat preservation pad 5391 is attached to the second mating surface 539. In the projection of the second mating surface 539, the heat preservation pad 5391 does not overlap with the power module 51.

[0089] Since the area of ​​the second mating surface 539 is usually larger than the area of ​​the power module 51, a heat preservation pad 5391 is provided on the portion of the second mating surface 539 that is not in contact with the power module 51 to prevent condensation on the surface of the heat sink.

[0090] In the present application, by partitioning the first mating surface 531 of the driving radiator 53 and the refrigerant radiator 54, the heat transfer path of the second power module 512 with low heat generation is extended from the driving radiator 53 to the refrigerant radiator 54, and the temperature difference between various parts of the surface of the driving radiator 53 can be reduced, thereby reducing or avoiding the generation of condensation.

[0091] In the present application, by setting a gap between the second area 533 and the refrigerant radiator 54, the path for heat transfer from the second area 533 to the refrigerant radiator 54 is extended, the thermal resistance is increased, and the surface temperature of the radiator near the transfer path is increased, thereby reducing the temperature difference between the first area 532 and the fourth area 535, and reducing or avoiding the generation of condensation.

[0092] In the present application, a thermal interface material is filled between the first region 532 and the refrigerant radiator 54 to enhance the heat transfer capacity. There is no thermal interface material between the third region 534 and the refrigerant radiator 54, which slows down the heat transfer rate from the third region 534 to the refrigerant radiator 54, and the temperature of the fourth region 535 increases, thereby reducing the temperature difference between the fourth region 535 and the first region 532, thereby reducing the probability of condensation water generation.

[0093] In the present application, the second area 533 extends to the first edge 536 of the first mating surface 531, so that when the drive plate assembly 50 is installed vertically, condensed water can be discharged from the gap between the second area 533 and the refrigerant radiator 54, thereby avoiding the influence of condensed water on electrical components.

[0094] In the present application, a guide rib 528 is provided on the second edge 536 of the first mating surface 531 , and the guide rib 528 can guide away condensed water when the driving plate assembly 50 is installed horizontally.

[0095] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

[0096] For the convenience of explanation, the above description has been made in conjunction with specific embodiments. However, the above exemplary discussion is not intended to be exhaustive or limit the embodiments to the specific forms disclosed above. Based on the above teachings, various modifications and variations can be obtained. The selection and description of the above embodiments are to better explain the principles and practical applications, so that those skilled in the art can better use the embodiments and various different variations of the embodiments suitable for specific use considerations.

Claims

1. An air conditioner outdoor unit, characterized in that: include: An electrical box, wherein a drive board assembly is provided in the electrical box; The drive plate assembly comprises: Driver substrate; A power module connected to the driving substrate, the power module comprising a first power module and a second power module, the first power module generating more heat than the second power module; A driving heat sink is closely connected to the power module; A refrigerant radiator abuts against a side of the driving radiator away from the power module; The surface of the driving radiator facing the refrigerant radiator is called a first mating surface, and the first mating surface can be divided into a first area, a second area, and a third area; on the projection of the first mating surface, the first power module is located in the first area; the third area is adjacent to the second power module, and the second power module is located in the second area, or the third area overlaps with part of the second power module, and the other part of the second power module overlaps with the second area; The first area and the third area are both in contact with the refrigerant radiator; and there is a gap between the second area and the refrigerant radiator.

2. The air conditioner outdoor unit according to claim 1, characterized in that: The third region is adjacent to an end of the second power module away from the first power module, or the third region coincides with an end of the second power module away from the first power module.

3. The air conditioner outdoor unit according to claim 1, characterized in that: The portion where the second power module overlaps with the second region is a first portion, the portion where the second power module overlaps with the third region is a second portion, and the area of ​​the first portion is greater than that of the second portion.

4. The air conditioner outdoor unit according to claim 1, characterized in that: The first region and the third region protrude from the second region.

5. The air conditioner outdoor unit according to claim 1, characterized in that: The first power module and the second power module are arranged along a first direction, and the first area and the second area are divided along the first direction; The edge of the first mating surface away from the first area is a first edge, and the second area extends to the first edge; When the driving plate assembly is installed vertically, the first edge is the lower edge of the first mating surface.

6. The air conditioner outdoor unit according to claim 1, characterized in that: The first power module and the second power module are arranged along a first direction, and the first area and the second area are divided along the first direction; An edge of the first mating surface away from the first area is a first edge, an edge of the first mating surface adjacent to the first edge is a second edge, a guide rib protruding toward the coolant radiator is provided at the second edge, and a guide slope is provided on the guide rib; When the driving plate assembly is installed horizontally, the guide rib is located at the lower side of the first matching surface.

7. The air conditioner outdoor unit according to claim 6, characterized in that: The guide rib corresponds to the lower part of the second area.

8. The air conditioner outdoor unit according to claim 1, characterized in that: A thermal interface material is filled between the first region and the refrigerant radiator, and no thermal interface material is filled between the third region and the refrigerant radiator.

9. The air conditioner outdoor unit according to claim 1, characterized in that: The surface of the driver heat sink facing the power module is called a second mating surface, and a thermal insulation pad is attached to the second mating surface; In the projection of the second mating surface, the thermal insulation pad and the power module do not overlap.

10. An air conditioner outdoor unit, characterized in that: include: An electrical box, wherein a drive board assembly is provided in the electrical box; The drive plate assembly comprises: Driver substrate; A power module connected to the driving substrate, the power module comprising a first power module and a second power module, the first power module is a compressor power module, and the second power module is a fan driving module; A driving heat sink is closely connected to the power module; A refrigerant radiator abuts against a side of the driving radiator away from the power module; The surface of the driving radiator facing the refrigerant radiator is called a first mating surface, and the first mating surface can be divided into a first area, a second area, and a third area; on the projection of the first mating surface, the first power module is located in the first area; the third area is adjacent to the second power module, and the second power module is located in the second area, or the third area overlaps with part of the second power module, and the other part of the second power module overlaps with the second area; The first area and the third area are both in contact with the refrigerant radiator; and there is a gap between the second area and the refrigerant radiator.

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