CN218033400U - Radiator, electrical box assembly and heat exchange device - Google Patents

Abstract

The utility model relates to a radiator, electrical apparatus box subassembly and heat transfer device. The radiator is provided with N layers of fins which are sequentially arranged from top to bottom, wherein the N layers of fins are staggered up and down and left and right, the right end position of the ith layer of fins is contracted at the right end position of the (i + 1) th layer of fins, and the left end position of the (i + 1) th layer of fins is contracted at the left end position of the ith layer of fins; the N layers of fins are obliquely arranged relative to the horizontal plane, wherein the oblique direction of the (i + 1) th layer of fins is opposite to that of the (i) (both the odd number and the even number of the fins) th layer of fins; the fins on the uppermost layer are the fins on the 1 st layer, the fins on the lowermost layer are the fins on the Nth layer, and N is more than or equal to i and more than 1; when cooling water drops to the fins of the layer 1, the cooling water can flow to the fins of the next layer by layer.

Description

Radiator, electrical box assembly and heat exchange device

Technical Field

The utility model relates to an air conditioner technical field especially relates to radiator, electrical box subassembly and heat transfer device.

Background

Traditional split type air-out indirect heating equipment on, axial compressor fan blade and motor all set up on last air-out indirect heating equipment top, and the motor need overcome gravity and do work, and from last down, the amount of wind is degressive, and the heat transfer effect is also poor more, and the mainboard radiator sets up in the lower part, and the air of outside environment needs earlier through condenser (refrigeration and dehumidification mode), and the air recooling radiator after rising, and the air is little with the radiator heat transfer difference in temperature, the radiator heat transfer effect is poor. Under abominable operating mode, radiator heat transfer effect is not good, appears easily that IPM module temperature protection etc. leads to frequently falling the frequence, leads to the air conditioner travelling comfort poor.

SUMMERY OF THE UTILITY MODEL

For the utility model discloses the technical problem who solves lies in overcoming the not enough of prior art, provides a radiator, electrical apparatus box subassembly and heat transfer device.

The utility model provides a radiator, which is provided with N layers of fins, wherein the N layers of fins are arranged from top to bottom in sequence, the N layers of fins are staggered up and down and left and right, wherein the right end position of the ith layer of fins is contracted at the right end position of the (i + 1) th layer of fins, and the left end position of the (i + 1) th layer of fins is contracted at the left end position of the ith layer of fins; the N layers of fins are obliquely arranged relative to the horizontal plane, wherein the oblique direction of the (i + 1) th layer of fins is opposite to that of the (i) th layer of fins; the fin at the uppermost layer is a 1 st layer fin, the fin at the lowermost layer is an Nth layer fin, and N is more than or equal to i and more than 1; when cooling water drops to the fins of the layer 1, the cooling water can flow to the fins of the next layer by layer.

In some embodiments, each of the N layers of fins has a plurality of flow channels formed on an upper surface thereof, the flow channels extending from a left end position to a right end position of the fin, and the flow channels are used for circulation of cooling fluid.

In some embodiments, the flow channel is curvilinear.

In some embodiments, the curvilinear shape is an S-shape, a wave shape, or an archimedes spiral.

In some embodiments, the upper surface of each layer of fins is provided with a plurality of grooves extending from the left end position to the right end position of the fin, the grooves are distributed at intervals in the front-back direction of the first fin, and the grooves form the flow channel.

In some embodiments, the upper surface of each layer of fins is provided with a plurality of upper convex ribs extending from the left end position to the right end position of the fins, the plurality of upper convex ribs are distributed at intervals in the front-back direction of the fins, and an upper flow channel is formed in a gap between every two adjacent upper convex ribs.

In some embodiments, the lower surface of each layer of the fins is provided with a plurality of lower ribs extending from the left end position to the right end position of the fins, the plurality of lower ribs are distributed at intervals in the front-back direction of the fins, and a lower flow channel is formed by a gap between every two adjacent ribs.

In some embodiments, the front end of each layer of fins is fixed on the base plate, and the rear end of each layer of fins is provided with a water baffle.

The utility model also provides an electrical box subassembly, include: an electrical box, in which electrical components are arranged; the heat sink according to any of the above embodiments, wherein the heat sink is mounted on the electrical box and used for dissipating heat of the main control board in the electrical box.

In some embodiments, the electronics box is removably coupled to the base plate of the heat sink.

In some embodiments, the housing of the electrical box is formed with a mounting portion; the back of base plate is formed with the mounting groove, the installation department embedding in the mounting groove the installation department with the contact position of mounting groove is provided with the waterproof board, the waterproof board includes many bending parts, many bending part parcel the installation department.

In some embodiments, the electrical component comprises a main control board and an electrical device arranged on the main control board; the back of the substrate is provided with a convex block which is contacted with the main control board.

The utility model also provides a heat transfer device, include: a housing forming an accommodation space; the condenser is arranged in the accommodating space; the electrical box subassembly of any preceding embodiment, wherein, the electrical box set up in the accommodation space is outer and be fixed in the shell, the radiator sets up the shell outside, and is located the below of condenser stop valve, when the comdenstion water that the condenser stop valve produced drips to layer 1 fin, but the fin of layer one-by-layer flow direction next floor.

In some embodiments, further comprising: the fan is arranged at the top of the shell and located in the containing space, the fan is used for enabling negative pressure to be generated in the containing space, the peripheral airflow of the shell flows to the inside of the shell, and in the process that the peripheral airflow of the shell flows to the inside of the shell, the airflow passes through the radiator.

After the technical scheme is adopted, compared with the prior art, the utility model following beneficial effect has: through the mode that cooling water flows through the fins step by step, dust on the surface of the radiator can be cleaned, and the problem that heat exchange thermal resistance is increased due to dust accumulation on the surface of the radiator, and the heat exchange efficiency is low is solved; can also directly cool off the radiator and the cooling water evaporation heat absorption through microthermal cooling water, further cool off the radiator through the phase transition, can realize that water-cooling + water evaporation produces multiple cooling methods such as phase transition heat absorption and combine and greatly promote heat exchange efficiency.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention as claimed.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, the illustrative embodiments and the description of the invention serve to explain the invention without unduly limiting the invention. It is obvious that the drawings in the following description are only some embodiments, and that for a person skilled in the art, other drawings can be derived from them without inventive effort. In the drawings:

fig. 1 is a schematic view of a heat sink according to an exemplary embodiment of the present invention;

FIG. 2 is a cross-sectional view of a heat sink mounted to an electrical box in accordance with an exemplary embodiment of the present invention;

fig. 3 is a schematic diagram of a heat exchanger according to an exemplary embodiment of the present invention;

fig. 4 is a top view of a heat sink according to an exemplary embodiment of the present invention;

fig. 5 is a schematic view of a front side of a heat sink according to an exemplary embodiment of the present invention;

fig. 6 and 7 are schematic views illustrating a back structure of a heat sink according to an exemplary embodiment of the present invention;

it should be noted that the drawings and the description are not intended to limit the scope of the inventive concept in any way, but to illustrate the inventive concept by those skilled in the art with reference to specific embodiments.

Detailed Description

In the description of the present invention, it should be noted that the terms "inside", "outside", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted", "connected", "contacting" and "communicating" are to be interpreted broadly, e.g. as either a fixed connection, a detachable connection, or an integral connection; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood as a specific case by those skilled in the art.

As shown in fig. 1-6, the utility model provides a radiator, specifically, the radiator includes multilayer fin 20, and multilayer fin 20 sets gradually and separates each other from top to bottom by last, and lower one deck fin among the multilayer fin 20 is used for accepting the cooling water that drops from the last deck fin and makes this cooling water flow on the lower one deck fin through its fin surface, can wash and take away the dust on surface through cooling water flow through the fin surface.

In some embodiments, the heat sink is provided with N layers of fins, the N layers of fins 20 are sequentially arranged from top to bottom, wherein the N layers of fins 20 are staggered from top to bottom, the right end position of the ith layer of fins is contracted to the right end position of the (i + 1) th layer of fins, and the left end position of the (i + 1) th layer of fins is contracted to the left end position of the ith layer of fins, where i is an odd number or an even number; the N layers of fins are obliquely arranged relative to the horizontal plane, wherein the oblique direction of the (i + 1) th layer of fins is opposite to that of the (i) th layer of fins; the fins on the uppermost layer are the fins on the 1 st layer, the fins on the lowermost layer are the fins on the Nth layer, and N is more than or equal to i and more than 1; when cooling water drops to the fins of the layer 1, the cooling water can flow to the fins of the next layer by layer.

The utility model discloses a radiator flows through the mode of fin step by step through the cooling water, can wash the dust on radiator surface, solves radiator surface dust and piles up and cause the increase of heat transfer thermal resistance, leads to the problem that heat exchange efficiency is low, can also promote the radiating efficiency through the cooling water cooling radiator.

The fins 20 are distributed perpendicular to the base plate 10, and the fins 20 and the horizontal direction have a certain included angle alpha, the alpha angle is between 1 degree and 5 degrees, for example, the two ends of odd (even) rows of radiating fins are parallel and level, the odd rows are longer than the left ends and shorter than the right ends of even rows of radiating fins, the difference length L is between 15mm and 25mm, so that after cooling water flows from the left end to the right end of the 1 st layer of fins, the right end of the 2 nd layer of fins can receive the cooling water dropping under the action of gravity from the right end of the 1 st layer of fins, and after the cooling water flows from the right end to the left end of the 2 nd layer of radiating fins, the left end of the 3 rd layer of radiating fins can receive the cooling water dropping from the left end of the 2 nd layer of radiating fins. According to the sequence, the cooling water can be ensured to flow through the fins behind the fins from the layer 1 in sequence, the cooling water is fully utilized to cool the radiator, the dust on the surface of the fins of the radiator is taken away, the heat exchange resistance is reduced, and the heat exchange efficiency is improved.

In some examples, as shown in fig. 5, the multi-layer fin 20 includes a plurality of first fins 21 and a plurality of second fins 22, and the plurality of first fins 21 and the plurality of second fins 22 are alternately arranged up and down and are spaced from each other up and down and are offset left and right.

First fin 21 and second fin 22 are relative to the horizontal plane slope, first fin 21 left end is higher than first fin 21 right-hand member, second fin 22 left end is less than the second fin right-hand member, wherein, the projection of first fin 21 right-hand member on the horizontal plane is located the one deck down on the second fin 22, the projection of the left end of second fin 22 on the horizontal plane is located the one deck down on first fin 21, second fin 22 is used for accepting the cooling water that is located the one deck above the second fin 22 first fin 21 right-hand member drips, first fin 21 is used for accepting the cooling water that is located the one deck above the first fin 21 the left end of second fin 22 drips. The adjacent two first fins 21 and the second fins 22 are in a splayed shape, and heat dissipation is realized by cooling the fins of each layer step by step.

In some embodiments, each of the N layers of fins has a plurality of flow channels formed on an upper surface thereof, the flow channels extending from a left end position to a right end position of the fin, and the flow channels are used for circulation of cooling fluid.

For example, as shown in fig. 1, a plurality of first flow channels 23 are formed in the upper surface of the first fin 21, 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 in the upper surface of the second fin 22, the second flow channels 24 extend from the left end to the right end of the second fin 22, and the first flow channels 23 and the second flow channels 24 are used for flowing a cooling liquid.

A plurality of flow channels are formed on the surfaces of the first radiating fins and the second radiating fins, so that cooling water slowly flows through each layer of radiating fins, the radiator is fully cooled, and the heat exchange efficiency is improved.

The first flow channel 23 and/or the second flow channel 24 are curved. The curve is S-shaped, wave-shaped or Archimedes spiral. The curved flow passages increase the flow area of the cooling liquid, and further improve the heat dissipation efficiency of the heat sink.

The flow channel is S-shaped and vertically and equidistantly distributed on the upper surface and the lower surface of each layer of fins, the flow channel extends from one end (left end) of the first layer of fins to the other end (right end), the width D of the S-shaped flow channel is between 8mm and 15mm, the height H1 is between 3mm and 10mm, the design of the S-shaped flow channel can increase the heat exchange area, reduce the heat exchange thermal resistance and strengthen the fluid disturbance, cooling water dropping on each layer of fins can slowly flow to the other end from one end, the heat exchange contact time of the cooling water and the radiator is prolonged, the cooling water and the radiator can fully exchange heat, and the heat exchange efficiency of the radiator is improved.

In an example, the upper surface of each layer of fins is provided with a plurality of grooves extending from the left end position to the right end position of the fin, the grooves are distributed at intervals in the front-back direction of the first fin, and the grooves form the flow channel.

For example, a plurality of first grooves extending from the left end to the right end of the first fin 21 are formed on the upper surface of the first fin, the plurality of first grooves are distributed at intervals in the front-rear direction of the first fin, and the first grooves form the first flow channels; and/or a plurality of second grooves extending from the left end to the right end of the second fin are formed in the upper surface of the second fin, the second grooves are distributed at intervals in the front-back direction of the second fin, and the second grooves form the second flow channel.

In another example, the upper surface of each layer of fins is provided with a plurality of upper convex ribs extending from the left end position to the right end position of the fins, the plurality of upper convex ribs are distributed at intervals in the front-back direction of the fins, and an upper flow channel is formed by a gap between every two adjacent upper convex ribs. The thickness W of the upper bead in the front-rear direction is 1mm to 3mm (shown in FIG. 4).

For example, a plurality of first upper convex ribs extending from the left end to the right end of the first fin are arranged on the upper surface of the first fin, the plurality of first upper convex ribs are distributed at intervals in the front-back direction of the first fin, and a first gap between every two adjacent first upper convex ribs forms the first upper flow channel; and/or a plurality of second upper convex ribs extending from the left end to the right end of the second fin on the upper surface of the second fin, wherein the plurality of second upper convex ribs are distributed at intervals in the front-back direction of the second fin, and a second gap between every two adjacent second upper convex ribs forms the second upper flow channel.

The utility model discloses a first runner and second runner can also form through setting up protruding muscle on first fin and second fin surface through the recess that sets up on first fin and second fin surface, and the clearance forms the runner between the protruding muscle.

Preferably, the lower surface of each layer of fins is provided with a plurality of lower convex ribs extending from the left end position to the right end position of the fins, the plurality of lower convex ribs are distributed at intervals in the front-back direction of the fins, and a lower flow channel is formed by a gap between every two adjacent convex ribs.

In some embodiments, the front end of each layer of fins is fixed on the base plate, and the rear end of each layer of fins is provided with a water baffle.

For example, the front end of the first fin 21 is fixed on the base plate 10, and the rear end of the first fin 21 is provided with a first water baffle; the front ends of the second fins 22 are fixed on the base plate 10, and the rear ends of the second fins 22 are provided with second water baffles 25. The first water baffle and the second water baffle 25 can increase the heat exchange area, improve the heat exchange efficiency, prevent cooling water from flowing away from the edge of the fin, and ensure that the cooling water can flow along the curved runner.

The breakwater can be cuboid form vertical distribution in every layer of fin upper and lower surface, extends to other end (right-hand member) always from fin one end (left end), and the breakwater width K is between 1mm ~ 3mm, and high H2 is between 5mm ~ 15mm, and the breakwater not only can increase heat transfer area, improves heat exchange efficiency, but also can prevent that cooling water from flowing away along the fin border, guarantees that cooling water can flow along "S" shape runner.

The utility model also provides an electrical apparatus box subassembly, as shown in fig. 2, fig. 5 and fig. 6, the electrical apparatus box subassembly includes: an electric appliance box 30 in which electric appliance elements are built; as with any of the embodiments of the heat sink, the heat sink is mounted to the electrical box 30 for dissipating heat from the electrical box 30.

In some embodiments, as shown in fig. 5, the electrical box 30 is removably attached to the base plate 10 of the heat sink. For example by means of a snap 14.

The shell of electrical apparatus box 30 is formed with installation department 32, and the back of base plate 10 is formed with the mounting groove, and in the mounting groove was located to the installation department cover, the contact site at installation department 32 and mounting groove was provided with the waterproof board, and the waterproof board is many bendings form, parcel installation department.

Specifically, as shown in fig. 7, the waterproof board 12 is formed by extending the base board 10 back to the direction of the heat dissipation fins 20 to the periphery, is shaped like a photo frame, has a thickness of 2mm to 5mm and a height of 5mm to 12mm, and can effectively prevent water from entering the interior of the electrical box 30 to cause water inlet damage of the main control board 31 due to a labyrinth structure formed by the waterproof board and the electrical box 30.

Further, the rear surface of the substrate 10 is provided with a bump 11, and the bump 11 contacts the main control board 31.

The bump 11 is formed by stretching the substrate 10 in the direction opposite to the radiating fin 20, and the thickness is 2 mm-5 mm. The back of the main control board 31 is provided with pins which are uneven, the main control board 31 is provided with a heat dissipation module in a cuboid shape, and the bump 11 can be matched with the heat dissipation module on the main control board 31, so that the heat dissipation device is more tightly attached to the main control board 31, and the heat conduction efficiency of the main control board 31 for transferring heat to the heat dissipation device is improved.

Further, as shown in fig. 6, the first screw holes 15 are formed by stretching a circle with a diameter of 1.5mm to 2mm from the protrusion 11 to the substrate 10, and the number of the first screw holes 15 is 3, and the first screw holes are distributed on the upper, middle and lower parts of the protrusion 11, and the depth of the first screw holes is smaller than the sum of the thicknesses of the substrate 10 and the protrusion 11, so that water is prevented from entering the main control board 31 from the first screw holes 15, and the main control board 31 is prevented from being damaged. The screw passes through the first screw hole 15 to make the main control board 31 be assembled with the heat sink more tightly).

The second screw holes 13 are formed by stretching a circle with the diameter of 3.0 mm-3.3 mm from the base plate 10 to the direction of the radiating fins 20, the number of the second screw holes is 1, the second screw holes are distributed at the lower right corner of the base plate 10, the depth of the second screw holes is smaller than the thickness of the base plate 10, and water is prevented from entering the main board from the screw holes to cause the damage of the main control board 31. The screw makes radiator and 30 assembly of electrical apparatus boxes inseparabler through second screw hole 13, prevents that fit clearance is too big, leads to inside water entering electrical apparatus box 30, leads to main control board 31 damage of intaking.

The utility model also provides a heat transfer device, as shown in FIG. 3, include: a housing 40 forming an accommodating space; the condenser is arranged in the accommodating space; the electrical box assembly as described above, wherein the electrical box 30 is disposed outside the accommodating space and fixed to the housing 40, the heat sink is disposed outside the housing 40 and below the condenser cut-off valve 50, the condensed water generated by the condenser cut-off valve 50 drops onto the fins 20 of the heat sink, and the condensed water drops onto the fins 20 to form cooling water.

Further, heat transfer device still includes: the fan 60 is arranged at the top of the housing 40, the fan 60 is located in the accommodating space, the fan 60 is used for generating negative pressure in the accommodating space, and the airflow on the periphery of the housing 40 exchanges heat with the heat sink 100 in the process of flowing into the housing 40.

The condenser cutoff valve 50 includes a large valve and a small valve, which are both disposed right above the radiator 100, and when in a cooling or dehumidifying mode, condensed water is generated on the large valve and the small valve due to a low-temperature refrigerant flowing through the large valve and the small valve. The condensed water automatically drops on the heat sink 100 under the action of gravity, and directly cools the heat sink 100. When the fan 60 above the top cover of the housing 40 is started to drive the fan blades to rotate, air inside the heat exchange device can be sent to the outside of the housing 40 by the fan 60, negative pressure is formed in a containing space formed by the housing 40 of the heat exchange device, air around the housing can flow into the housing 40, 1 rectangular air inlet 41 (shown in fig. 3) can be arranged in the middle of a panel of the housing 40, the rectangular air inlet 41 corresponds to the radiator 100 and is a rectangular frame slightly larger than the radiator 100, the air flows through the radiator 100 to cool the radiator, air on the outer side flows through the radiator 100 to exchange heat with the radiator 100, blown air can evaporate part of water flowing through the surface of the radiator, the radiator is further cooled through phase change, three cooling modes of air cooling, water cooling and phase change heat absorption generated by water evaporation can be combined for cooling (namely, the radiator is cooled by multiple modes at the same time), heat exchange efficiency of the radiator can be greatly improved, various protections are avoided frequently occurring in the air conditioner, continuous operation of the air conditioner system is ensured, operation stability, reliability and comfort of the air conditioner system under a high-temperature severe working condition are improved, and user satisfaction is improved.

It is further understood that the use of "a plurality" in this disclosure means two or more, and other terms are analogous. "and/or" describes the association relationship of the associated objects, meaning that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship. The singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.

It will be further understood that the terms "first," "second," and the like are used to describe various information and that such information should not be limited by these terms. These terms are only used to distinguish one type of information from another, and do not indicate a particular order or degree of importance. Indeed, the terms "first," "second," etc. are used interchangeably throughout. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope of the present disclosure.

It will be further appreciated that while operations are depicted in the drawings in a particular order, this should not be understood as requiring that such operations be performed in the particular order shown or in serial order, or that all illustrated operations be performed, to achieve desirable results. In certain environments, multitasking and parallel processing may be advantageous.

Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This application is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.

It will be understood that the present disclosure is not limited to the precise arrangements that have been described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is to be limited only by the scope of the appended claims.

Claims (14)

1. A heat sink is characterized in that a heat sink is provided,

is provided with N layers of fins which are sequentially arranged from top to bottom, wherein

The N layers of fins are staggered up and down and left and right, wherein the right end of the ith layer of fins is contracted 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 contracted at the left end of the ith layer of fins;

the N layers of fins are obliquely arranged relative to the horizontal plane, wherein the oblique direction of the (i + 1) th layer of fins is opposite to that of the ith layer of fins;

the fins on the uppermost layer are the fins on the 1 st layer, the fins on the lowermost layer are the fins on the Nth layer, and N is more than or equal to i and more than 1;

when cooling water drops to the fin of the layer 1, the cooling water can flow to the fin of the next layer by layer.

2. The heat sink of claim 1,

and a plurality of flow channels are formed on the upper surface of each layer of fins in the N layers of fins, the flow channels extend from the left end positions of the fins to the right end positions, and the flow channels are used for cooling liquid circulation.

3. The heat sink of claim 2,

the flow passage is in a curve shape.

4. The heat sink of claim 3,

the curve is S-shaped, wave-shaped or Archimedes spiral.

5. The heat sink according to any one of claims 2-4,

a plurality of grooves extending from the left end position to the right end position of each layer of fins are formed in the upper surface of each layer of fins, the grooves are distributed at intervals in the front-back direction of the fins, and the grooves form the flow channels.

6. The heat sink according to any one of claims 2-4,

every layer of fin upper surface is equipped with many last convex ribs that extend from fin left end position to right end position, many last convex ribs are in fin front and back direction interval distribution, every adjacent two go up the clearance between the convex rib and form the runner.

7. The heat sink of claim 6,

every layer the fin lower surface is equipped with from many lower protruding muscle that the fin left end position extended to the right end position, many lower protruding muscle are in fin front and back direction interval distribution, the runner down is formed to the clearance between every two adjacent protruding muscle.

8. The heat sink according to any one of claims 2-4,

the front end of each layer of fins is fixed on the base plate, and the rear end of each layer of fins is provided with a water baffle.

9. An electrical enclosure assembly, comprising:

an electrical box with electrical components inside;

the heat sink of any of claims 1-8, mounted to the appliance box for dissipating heat from a main control board in the appliance box.

10. The electrical enclosure assembly of claim 9,

the electrical box is detachably connected with the substrate of the radiator.

11. The electrical enclosure assembly of claim 10,

the shell of the electrical box is provided with a mounting part;

the back of base plate is formed with the mounting groove, the installation department embedding in the mounting groove the installation department with the contact position of mounting groove is provided with the waterproof board, the waterproof board includes many bending parts, many bending part parcel the installation department.

12. The appliance cartridge assembly of claim 11,

the electrical element comprises a main control board and an electrical device arranged on the main control board;

the back of the substrate is provided with a convex block which is contacted with the main control board.

13. A heat exchange device, comprising:

a housing forming an accommodation space;

the condenser is arranged in the accommodating space;

the electrical box assembly as claimed in any one of claims 9 to 12, wherein the electrical box is disposed outside the accommodating space and fixed to the housing, the heat sink is disposed outside the housing and below the condenser cut-off valve, and condensed water generated by the condenser cut-off valve can flow to the fins of the next layer by layer when dropping to the fins of the layer 1.

14. The heat exchange device of claim 13, further comprising:

a fan arranged on the top of the shell and positioned in the accommodating space,

the fan is used for generating negative pressure in the accommodating space, so that the airflow on the periphery of the shell flows into the shell, and the airflow passes through the radiator in the process that the airflow on the periphery of the shell flows into the shell.

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