Radiators, electrical box assemblies and heat exchangers

Abstract

This invention relates to a radiator, an electrical box assembly, and a heat exchange device. The radiator has N layers of fins arranged sequentially from top to bottom, wherein the N layers of fins alternate vertically and are staggered horizontally, wherein the right end of the i-th layer of fins is located at the right end of the (i+1)-th layer of fins, and the left end of the (i+1)-th layer of fins is located at the left end of the i-th layer of fins; all N layers of fins are inclined relative to the horizontal plane, wherein the inclination direction of the (i+1)-th layer of fins is opposite to the inclination direction of the i-th (i can be either odd or even)-th layer of fins; the uppermost layer of fins is the 1-th layer of fins, and the lowermost layer of fins is the N-th layer of fins, where N ≥ i > 1; when cooling water drips onto the 1-th layer of fins, it can flow layer by layer to the next layer of fins.

Description

Technical Field

[0001] This invention relates to the field of air conditioning technology, and more particularly to radiators, electrical box assemblies, and heat exchange devices. Background Technology

[0002] Traditional split-type top-discharge heat exchangers have axial fan blades and motors located at the top. The motor has to work against gravity, and the airflow decreases from top to bottom, resulting in poorer heat exchange. Meanwhile, the mainboard heatsink is located in the lower middle section, and the ambient air must first pass through the condenser (in cooling and dehumidification modes), increasing its temperature before cooling the heatsink. This results in a small temperature difference between the air and the heatsink, leading to poor heat exchange efficiency. Under harsh operating conditions, poor heat exchange can easily trigger IPM module temperature protection, causing frequent frequency throttling and ultimately poor air conditioning comfort. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide a radiator, an electrical box assembly and a heat exchange device.

[0004] This invention provides a heat sink with N layers of fins arranged sequentially from top to bottom. The N layers of fins alternate vertically and are staggered horizontally. The right end of the i-th fin is located at the right end of the (i+1)-th fin, and the left end of the (i+1)-th fin is located at the left end of the i-th fin. All N layers of fins are inclined relative to a horizontal plane, with the (i+1)-th fin's inclination direction opposite to that of the i-th fin. The uppermost fin is the 1-th fin, and the lowermost fin is the N-th fin, where N ≥ i > 1. When cooling water drips onto the 1-th fin, it flows layer by layer to the next fin.

[0005] In some embodiments, each of the N fin layers has a plurality of flow channels formed on its upper surface, the flow channels extending from the left end to the right end of the fin, the flow channels being used for the flow of coolant.

[0006] In some embodiments, the flow channel is curved.

[0007] In some embodiments, the curve shape is S-shaped, wavy, or an Archimedean spiral.

[0008] In some embodiments, each fin layer has a plurality of grooves extending from the left end to the right end of the fin on its upper surface. The plurality of grooves are spaced apart in the front-back direction of the first fin, and the grooves constitute the flow channel.

[0009] In some embodiments, each fin layer has multiple upper ribs extending from the left end to the right end of the fin on its upper surface. The multiple upper ribs are spaced apart in the front-back direction of the fin, and the gap between each two adjacent upper ribs forms an upper flow channel.

[0010] In some embodiments, the lower surface of each fin layer is provided with multiple lower ribs extending from the left end to the right end of the fin. The multiple lower ribs are spaced apart in the front-back direction of the fin, and the gap between each pair of adjacent ribs forms a lower flow channel.

[0011] In some embodiments, the front end of each fin layer is fixed to the substrate, and the rear end of each fin layer is provided with a baffle plate.

[0012] The present invention also provides an electrical box assembly, comprising: an electrical box having built-in electrical components; and a heat sink as described in any of the above embodiments, wherein the heat sink is installed in the electrical box for dissipating heat from the main control board in the electrical box.

[0013] In some embodiments, the electrical box is detachably connected to the substrate of the radiator.

[0014] In some embodiments, the outer shell of the electrical box has a mounting portion; a mounting groove is formed on the back side of the substrate, the mounting portion is embedded in the mounting groove, and a waterproof plate is provided at the contact position between the mounting portion and the mounting groove. The waterproof plate includes multiple bends that wrap around the mounting portion.

[0015] In some embodiments, the electrical component includes a main control board and electrical devices disposed on the main control board; a bump is provided on the back side of the substrate, and the bump contacts the main control board.

[0016] The present invention also provides a heat exchange device, comprising: a housing forming a receiving space; a condenser disposed within the receiving space; and an electrical box assembly as described in any of the above embodiments, wherein the electrical box is disposed outside the receiving space and fixed to the housing, the radiator is disposed outside the housing and located below the condenser shut-off valve, and when the condensate generated by the condenser shut-off valve drips onto the first layer of fins, it can flow layer by layer to the next layer of fins.

[0017] In some embodiments, the system further includes: a fan disposed on the top of the housing, the fan being located within the receiving space, the fan being used to generate negative pressure within the receiving space, causing airflow from the periphery of the housing to flow into the housing, and the airflow passing through the radiator during the flow of air from the periphery of the housing into the housing.

[0018] After adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art: by cooling water flowing through the fins in stages, the dust on the surface of the radiator can be cleaned, solving the problem that the accumulation of dust on the surface of the radiator causes an increase in heat exchange resistance and a decrease in heat exchange efficiency; the radiator can also be directly cooled by low-temperature cooling water and the radiator can be further cooled by the evaporation of cooling water and phase change, which can greatly improve the heat exchange efficiency by combining multiple cooling methods such as water cooling + water evaporation to generate phase change heat absorption.

[0019] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit the invention. Attached Figure Description

[0020] The accompanying drawings, as part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments and descriptions of the invention are used to explain the invention, but do not constitute an undue limitation of the invention. Obviously, the drawings described below are merely some embodiments, and those skilled in the art can obtain other drawings based on these drawings without creative effort. In the drawings:

[0021] Figure 1 This is a schematic diagram of a heat sink structure according to an exemplary embodiment of the present invention;

[0022] Figure 2 This is a cross-sectional view of a radiator installed in an electrical box according to an exemplary embodiment of the present invention;

[0023] Figure 3 This is a schematic diagram of a heat exchanger structure according to an exemplary embodiment of the present invention;

[0024] Figure 4 This is a top view of a heat sink according to an exemplary embodiment of the present invention;

[0025] Figure 5 This is a schematic diagram of the front structure of a heat sink according to an exemplary embodiment of the present invention;

[0026] Figure 6 , Figure 7 This is a schematic diagram of the back structure of a heat sink according to an exemplary embodiment of the present invention;

[0027] It should be noted that these accompanying drawings and textual descriptions are not intended to limit the scope of the invention in any way, but rather to illustrate the concept of the invention to those skilled in the art by referring to specific embodiments. Detailed Implementation

[0028] In the description of this invention, it should be noted that the terms "inner" and "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0029] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," "contact," and "communication" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0030] like Figures 1-6 As shown, the present invention provides a radiator. Specifically, the radiator includes multiple layers of fins 20, which are arranged sequentially from top to bottom and spaced apart from each other. The next layer of fins in the multiple layers of fins 20 is used to receive cooling water dripping from the previous layer of fins and to allow the cooling water to flow over the surface of the next layer of fins. The cooling water flowing over the surface of the fins can clean and remove dust from the surface.

[0031] In some embodiments, the radiator has N layers of fins, which are arranged sequentially from top to bottom. The N layers of fins are staggered vertically and horizontally, with the right end of the i-th fin located at the right end of the (i+1)-th fin and the left end of the (i+1)-th fin located at the left end of the i-th fin. Here, i must be an odd or even number. This invention exemplarily shows the case where i is an odd number, but it is not limited to this. It is understood that in other examples, i can also be an even number. All N layers of fins are inclined relative to the horizontal plane, with the inclination direction of the (i+1)-th fin opposite to that of the i-th fin. The uppermost fin is the 1-th fin, and the lowermost fin is the N-th fin, where N ≥ i > 1. When cooling water drips onto the 1-th fin, it can flow layer by layer to the next fin.

[0032] The radiator of the present invention can clean the dust on the surface of the radiator by having cooling water flow through the fins in stages, thus solving the problem of increased heat exchange resistance and low heat exchange efficiency caused by dust accumulation on the radiator surface. It can also improve the heat dissipation efficiency by cooling the radiator with cooling water.

[0033] The fins 20 are distributed perpendicular to the substrate 10, and the fins 20 make a certain angle α with the horizontal direction, with α ranging from 1° to 5°. For example, the odd (even) numbered rows of heat dissipation fins are flush at both ends, and the odd-numbered rows are longer on the left and shorter on the right than the even-numbered rows, with a difference in length L ranging from 15mm to 25mm. This allows cooling water to flow from the left end to the right end of the first layer of fins, so that the right end of the second layer of fins can catch the cooling water dripping from the right end of the first layer of fins due to gravity. Similarly, cooling water flows from the right end to the left end of the second layer of fins, so the left end of the third layer of fins can catch the cooling water dripping from the left end of the second layer of fins. This sequence ensures that cooling water can flow from the first layer of fins through the subsequent fins, fully utilizing the cooling water to cool the radiator and removing dust from the radiator fin surface, reducing heat transfer resistance and improving heat transfer efficiency.

[0034] In some examples, such as Figure 5 As shown, the multilayer fin 20 includes multiple first fins 21 and multiple second fins 22, which are arranged alternately in a vertical sequence and are spaced apart from each other and staggered left and right.

[0035] Both the first fin 21 and the second fin 22 are inclined relative to the horizontal plane. The left end of the first fin 21 is higher than its right end, and the left end of the second fin 22 is lower than its right end. The projection of the right end of the first fin 21 onto the horizontal plane lies on the next layer of the second fin 22, and the projection of the left end of the second fin 22 onto the horizontal plane lies on the next layer of the first fin 21. The second fin 22 is used to collect cooling water dripping from the right end of the first fin 21 located one layer above it, and the first fin 21 is used to collect cooling water dripping from the left end of the second fin 22 located one layer above it. Adjacent first fins 21 and second fins 22 are arranged in a figure-eight shape, achieving heat dissipation by cooling each layer of fins in a progressive manner.

[0036] In some embodiments, each of the N fin layers has a plurality of flow channels formed on its upper surface, the flow channels extending from the left end to the right end of the fin, the flow channels being used for the flow of coolant.

[0037] For example, such as Figure 1 As shown, a plurality of first flow channels 23 are formed on the upper surface of the first fin 21, and the first flow channels 23 extend from the left end to the right end of the first fin 21. A plurality of second flow channels 24 are formed on the upper surface of the second fin 22, and the second flow channels 24 extend from the left end to the right end of the second fin 22. The first flow channels 23 and the second flow channels 24 are used for the flow of coolant.

[0038] Multiple flow channels are formed on the surfaces of the first and second heat dissipation fins, allowing cooling water to flow slowly through each layer of heat dissipation fins, thus fully cooling the radiator and improving heat exchange efficiency.

[0039] The first flow channel 23 and / or the second flow channel 24 are curved. The curve can be S-shaped, wavy, or an Archimedean spiral. These curved flow channels increase the coolant flow area and further improve the heat dissipation efficiency of the radiator.

[0040] The flow channels are vertically and equidistantly distributed in an "S" shape on the upper and lower surfaces of each fin layer, extending from one end (left end) of the first fin layer to the other end (right end). The width D of the "S" shaped flow channel is between 8mm and 15mm, and the height H1 is between 3mm and 10mm. The design of the "S" shaped flow channel can not only increase the heat exchange area, reduce the heat exchange thermal resistance, and enhance fluid turbulence, but also allow the cooling water dripping on each fin layer to flow slowly from one end to the other, increasing the heat exchange contact time between the cooling water and the radiator, so that the cooling water and the radiator can fully exchange heat and improve the heat exchange efficiency of the radiator.

[0041] In one example, each fin layer has multiple grooves extending from the left end to the right end of the fin on its upper surface. These grooves are spaced apart in the front-back direction of the first fin and form the flow channel.

[0042] For example, a plurality of first grooves extending from the left end to the right end of the first fin 21 are provided on the upper surface of the first fin, the plurality of first grooves being spaced apart in the front-back direction of the first fin, and the first grooves forming the first flow channel; and / or a plurality of second grooves extending from the left end to the right end of the second fin are provided on the upper surface of the second fin, the plurality of second grooves being spaced apart in the front-back direction of the second fin, and the second grooves forming the second flow channel.

[0043] In another example, each fin layer has multiple upward-protruding ribs extending from the left end to the right end of the fin. These ribs are spaced apart in the front-rear direction of the fin, and the gap between each pair of adjacent ribs forms an upper flow channel. The thickness W of the upward-rear ribs is between 1 mm and 3 mm. Figure 4 (As shown).

[0044] For example, the upper surface of the first fin has multiple first upper ribs extending from the left end to the right end of the first fin, the multiple first upper ribs being spaced apart in the front-back direction of the first fin, and the first gap between each two adjacent first upper ribs forming the first upper flow channel; and / or, the upper surface of the second fin has multiple second upper ribs extending from the left end to the right end of the second fin, the multiple second upper ribs being spaced apart in the front-back direction of the second fin, and the second gap between each two adjacent second upper ribs forming the second upper flow channel.

[0045] The first and second flow channels of the present invention can be formed by grooves provided on the surfaces of the first and second fins, or by ribs provided on the surfaces of the first and second fins, with the flow channels formed by the gaps between the ribs.

[0046] Preferably, the lower surface of each fin layer is provided with multiple lower ribs extending from the left end to the right end of the fin. The multiple lower ribs are distributed at intervals in the front-back direction of the fin, and the gap between each pair of adjacent ribs forms a lower flow channel.

[0047] In some embodiments, the front end of each fin layer is fixed to the substrate, and the rear end of each fin layer is provided with a baffle plate.

[0048] For example, the front end of the first fin 21 is fixed to the substrate 10, and the rear end of the first fin 21 is provided with a first baffle plate; the front end of the second fin 22 is fixed to the substrate 10, and the rear end of the second fin 22 is provided with a second baffle plate 25. The first baffle plate and the second baffle plate 25 can not only increase the heat exchange area and improve the heat exchange efficiency, but also prevent the cooling water from flowing away from the edge of the fin, ensuring that the cooling water can flow along the curved flow channel.

[0049] The baffle plate can be vertically distributed in a cuboid shape on the upper and lower surfaces of each fin layer, extending from one end (left end) of the fin to the other end (right end). The width K of the baffle plate is between 1mm and 3mm, and the height H2 is between 5mm and 15mm. The baffle plate can not only increase the heat exchange area and improve the heat exchange efficiency, but also prevent the cooling water from flowing away from the edge of the fin, ensuring that the cooling water can flow along the "S" shaped flow channel.

[0050] The present invention also provides an electrical box assembly, such as Figure 2 , Figure 5 and Figure 6 As shown, the electrical box assembly includes: an electrical box 30, which houses electrical components; and a heat sink, as described in any of the above embodiments, which is installed on the electrical box 30 to dissipate heat from the electrical box 30.

[0051] In some embodiments, such as Figure 5 As shown, the electrical box 30 is detachably connected to the base plate 10 of the radiator. For example, it can be engaged by a snap-fit ​​14.

[0052] The outer shell of the electrical box 30 has a mounting part 32, and the back of the substrate 10 has a mounting groove. The mounting part is fitted into the mounting groove. A waterproof plate is provided at the contact part between the mounting part 32 and the mounting groove. The waterproof plate is multi-folded and wraps around the mounting part.

[0053] Specifically, such as Figure 7 As shown, the waterproof plate 12 extends outwards from the substrate 10 in the direction away from the heat dissipation fins 20. It is shaped like a picture frame, with a thickness of 2mm to 5mm and a height of 5mm to 12mm. The "maze" structure formed by the waterproof plate 12 and the electrical box 30 can effectively prevent water from entering the electrical box 30 and causing water damage to the main control board 31.

[0054] Furthermore, a bump 11 is provided on the back side of the substrate 10, and the bump 11 contacts the main control board 31.

[0055] The bump 11 is stretched from the substrate 10 towards the heat sink fins 20, with a thickness of 2mm to 5mm. The back of the main control board 31 has pins and is uneven. The main control board 31 is designed with a cuboid heat sink module. The bump 11 can cooperate with the heat sink module on the main control board 31 to make the heat sink fit more tightly with the main control board 31 and improve the heat conduction efficiency of the main control board 31 in transferring heat to the heat sink.

[0056] Furthermore, Figure 6 As shown, the first screw hole 15 is formed by stretching a circle with a diameter of 1.5mm to 2mm from the protrusion 11 toward the substrate 10. There are three of them, distributed on the upper, middle and lower parts of the protrusion 11. The depth is smaller than the sum of the thicknesses of the substrate 10 and the protrusion 11 to prevent water from entering the main control board 31 through the first screw hole 15 and causing damage to the main control board 31. The screws pass through the first screw hole 15 to make the main control board 31 fit more tightly with the heat sink.

[0057] The second screw hole 13 is formed by stretching a circle with a diameter of 3.0mm to 3.3mm from the substrate 10 toward the heat sink fins 20. There is one such hole, located at the lower right corner of the substrate 10. Its depth is less than the thickness of the substrate 10 to prevent water from entering the motherboard through the screw hole and causing damage to the main control board 31. The screw passing through the second screw hole 13 ensures a tighter fit between the heat sink and the electrical box 30, preventing excessive clearance that could allow water to enter the electrical box 30 and cause water damage to the main control board 31.

[0058] The present invention also provides a heat exchange device, such as Figure 3As shown, it includes: a housing 40 forming a receiving space; a condenser disposed within the receiving space; and an electrical box assembly as described above, wherein the electrical box 30 is disposed outside the receiving space and fixed to the housing 40, and the radiator is disposed outside the housing 40 and located below the condenser shut-off valve 50, and the condensate generated by the condenser shut-off valve 50 drips onto the fins 20 of the radiator, and the condensate drips onto the fins 20 to form cooling water.

[0059] Furthermore, the heat exchange device also includes a fan 60 disposed on the top of the housing 40. The fan 60 is located within the housing space. The fan 60 is used to generate negative pressure within the housing space. As the airflow from the periphery of the housing 40 flows into the housing 40, the airflow exchanges heat with the radiator 100.

[0060] The condenser shut-off valve 50 includes a large valve and a small valve, both located directly above the radiator 100. In cooling or dehumidification mode, because low-temperature refrigerant flows through the large and small valves, condensate will form on them. Due to gravity, the condensate will automatically drip onto the radiator 100, directly cooling it. When the fan 60 above the top cover of the outer casing 40 is turned on, driving the fan blades to rotate, the air inside the heat exchanger is sent to the outside of the outer casing 40 by the fan 60. A negative pressure is created within the containment space formed by the outer casing 40, causing surrounding air to flow into the interior of the outer casing 40. A rectangular air inlet 41 can be provided in the center of the outer casing 40 panel. Figure 3 As shown, the rectangular air inlet 41 corresponds to the radiator 100 and is a slightly larger rectangular frame than the radiator 100. It allows air to flow through the radiator 100, cooling the radiator. The air on the outside flows through the radiator 100, exchanging heat with it. The air blowing through the radiator can also evaporate some of the water flowing over its surface, further cooling the radiator through phase change. This can achieve a combination of three cooling methods: air cooling, water cooling, and water evaporation generating phase change heat absorption (i.e., multiple methods cooling the radiator simultaneously). This can greatly improve the heat exchange efficiency of the radiator, avoid frequent protection failures of the air conditioner, ensure continuous operation of the air conditioning system, improve the stability and reliability of the air conditioning system under high temperature and harsh conditions, enhance the comfort of the air conditioning system, and improve user satisfaction.

[0061] It can be further understood that in this disclosure, "multiple" refers to two or more, and other quantifiers are similar. "And / or" describes the relationship between related objects, indicating that three relationships can exist; for example, A and / or B can represent: A alone, A and B simultaneously, and B alone. The character " / " generally indicates that the preceding and following related objects are in an "or" relationship. The singular forms "a," "the," and "the" are also intended to include the plural forms unless the context clearly indicates otherwise.

[0062] It is further understood that the terms "first," "second," etc., are used to describe various types of information, but this information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another, and do not indicate a specific order or degree of importance. In fact, the expressions "first," "second," etc., are completely interchangeable. For example, without departing from the scope of this disclosure, first information can also be referred to as second information, and similarly, second information can also be referred to as first information.

[0063] It is further understood that although operations are described in a specific order in the accompanying drawings in the embodiments of this disclosure, this should not be construed as requiring these operations to be performed in the specific order or serial order shown, or requiring all of the shown operations to be performed to obtain the desired result. In certain environments, multitasking and parallel processing may be advantageous.

[0064] Other embodiments of this disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this disclosure are indicated by the following claims.

[0065] It should be understood that this disclosure is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this disclosure is limited only by the appended claims.

Claims

1. An electrical box assembly, characterized in that, include: An electrical box containing electrical components; A heat sink, which is installed in the electrical box, is used to dissipate heat from the main control board in the electrical box; The radiator has N layers of fins, which are arranged sequentially from top to bottom. The N layers of fins alternate vertically and are staggered horizontally, wherein the right end of the i-th fin is located at the right end of the (i+1)-th fin, and the left end of the (i+1)-th fin is located at the left end of the i-th fin. The N layers of fins are all inclined relative to the horizontal plane, wherein the inclination direction of the (i+1)th layer of fins is opposite to the inclination direction of the i-th layer of fins. The topmost fin is the first fin layer, and the bottommost fin is the Nth fin layer, where N ≥ i > 1; When cooling water drips onto the first layer of fins, it can flow down to the next layer of fins. Each of the N layers of fins has multiple flow channels formed on its upper surface, which extend from the left end to the right end of the fin and are used for the flow of coolant.

2. The electrical box assembly according to claim 1, characterized in that, Each of the N layers of fins has multiple flow channels formed on its upper surface, which extend from the left end to the right end of the fin and are used for the flow of coolant.

3. The electrical box assembly according to claim 2, characterized in that, The flow channel is curved.

4. The electrical box assembly according to claim 3, characterized in that, The curve shape is S-shaped, wavy, or Archimedean spiral.

5. The electrical box assembly according to any one of claims 2-4, characterized in that, Each fin layer has multiple grooves extending from the left end to the right end on its upper surface. These grooves are spaced apart in the front-back direction of the fin and form the flow channel.

6. The electrical box assembly according to any one of claims 2-4, characterized in that, Each fin layer has multiple raised ribs extending from the left end to the right end of the fin on its upper surface. The multiple raised ribs are spaced apart in the front-back direction of the fin, and the gap between each two adjacent raised ribs forms an upper flow channel.

7. The electrical box assembly according to claim 6, characterized in that, The lower surface of each fin layer is provided with multiple lower ribs extending from the left end to the right end of the fin. The multiple lower ribs are distributed at intervals in the front-back direction of the fin, and the gap between each pair of adjacent ribs forms a lower flow channel.

8. The electrical box assembly according to any one of claims 2-4, characterized in that, The front end of each fin is fixed to the substrate, and the rear end of each fin is provided with a baffle plate.

9. The electrical box assembly according to claim 1, characterized in that, The electrical box is detachably connected to the base plate of the radiator.

10. The electrical box assembly according to claim 9, characterized in that, The outer shell of the electrical box has a mounting portion; A mounting groove is formed on the back of the substrate, and the mounting part is embedded in the mounting groove. A waterproof plate is provided at the contact position between the mounting part and the mounting groove. The waterproof plate includes multiple bends that wrap around the mounting part.

11. The electrical box assembly according to claim 10, characterized in that, The electrical components include a main control board and electrical devices mounted on the main control board; The back of the substrate is provided with a bump, which contacts the main control board.

12. A heat exchange device, characterized in that, include: The outer shell forms the containing space; A condenser is disposed within the accommodating space; The electrical box assembly as described in any one of claims 1-11, wherein the electrical box is disposed outside the receiving space and fixed to the housing, the radiator is disposed outside the housing and located below the condenser shut-off valve, and when the condensate water generated by the condenser shut-off valve drips onto the first layer of fins, it can flow layer by layer to the next layer of fins.

13. The heat exchange device according to claim 12, characterized in that, Also includes: A fan is mounted on top of the housing, and the fan is located within the receiving space. The fan is used to generate negative pressure in the containment space, causing the airflow from the periphery of the outer casing to flow into the inner casing, and during the process of the airflow from the periphery of the outer casing to the inner casing, the airflow passes through the radiator.

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