Air-cooled radiator and power conversion equipment

Abstract

The utility model discloses an air cooling radiator and a distributed inverter, the air cooling radiator comprises a heat radiation housing, a heat radiation fin group, a first air inlet module and a second air inlet module, and the heat radiation housing is internally provided with a heat radiation cavity. The heat dissipation fin set is installed in the heat dissipation cavity, and the heat dissipation fin set is provided with a first air inlet and a second air inlet. The first air inlet module comprises a first draught fan, the first draught fan is installed at at least one end of the cooling fin set in the vertical direction, and the air outlet side of the first draught fan faces the first air inlet. The second air inlet module comprises a second fan, the air outlet side of the second fan faces the second air inlet, and the axis of the first air inlet in the airflow direction intersects with the axis of the second air inlet in the airflow direction. According to the air cooling radiator, air can enter the air cooling radiator in different directions, the cold air inlet amount is increased, then heat of the heat dissipation fin set can be conveniently taken out in time through heat exchange, and the heat dissipation efficiency of the power conversion equipment is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a heat dissipation system technical field, especially a kind of air-cooled radiator and power conversion equipment. BACKGROUND

[0002] With the improvement of power density of inverter, energy storage converter and other power conversion equipment, the loss of power device such as Insulate-Gate Bipolar Transistor (IGBT for short) is also greatly increased, and the heat generated is more and more, which poses new challenges to the thermal design of power conversion equipment.

[0003] Therefore, how to improve the heat dissipation efficiency of power conversion equipment is a technical problem to be solved by those skilled in the art. SUMMARY

[0004] The utility model aims at providing an air-cooled radiator to improve the heat dissipation efficiency of power conversion equipment. Another object of the utility model is to provide a power conversion equipment comprising the above air-cooled radiator.

[0005] The air-cooled radiator provided by the present application comprises:

[0006] A heat dissipation shell is provided with a heat dissipation cavity inside;

[0007] A heat dissipation fin group is installed in the heat dissipation cavity, and the heat dissipation fin group has a first air inlet and a second air inlet;

[0008] A first air inlet module comprises a first fan, which is installed at least at one end of the heat dissipation fin group in the vertical direction, and the air outlet side of the first fan faces the first air inlet;

[0009] A second air inlet module comprises a second fan, and the air outlet side of the second fan faces the second air inlet, and the axis of the first air inlet along the airflow direction intersects with the axis of the second air inlet along the airflow direction.

[0010] Optionally, in the above air-cooled radiator, the heat dissipation fin group comprises a first fin group, the first fin group has the first air inlet and the second air inlet, the first fin group comprises a plurality of first fins arranged in sequence, and the air outlet side of the first fan and the second fan faces the first fin.

[0011] Optionally, in the air-cooled radiator, the heat dissipation fin group comprises a first fin group and a second fin group, the first fin group comprises a plurality of first fins arranged in sequence and the first air inlet, and the second fin group comprises a plurality of second fins arranged in sequence and the second air inlet; the air outlet side of the first fan faces the first fins, and the air outlet side of the second fan faces the second fins.

[0012] Optionally, in the air-cooled radiator, the end portions of some fins of the first fin group and some fins of the second fin group are connected.

[0013] Optionally, in the air-cooled radiator, the first fin group and / or the second fin group has a side opening forming a fan accommodating cavity accommodating the second fan.

[0014] Optionally, in the air-cooled radiator, an intermediate air passage is formed between the first fin group and the second fin group to form an air inlet of the second fin group, and the air flow passing through the first air inlet sequentially passes through the first fin group, the intermediate air passage and the second fin group.

[0015] Optionally, in the air-cooled radiator, a flow guide is further arranged, the flow guide is arranged towards the air outlet side of the second fan and the second air inlet of the second fin group, and the flow guide is arranged in the intermediate air passage.

[0016] Optionally, in the air-cooled radiator, a third intermediate transition fin group is further arranged, the third intermediate transition fin group comprises third intermediate transition fins arranged in sequence, two adjacent second fin groups arranged with inclined teeth are separated by the third intermediate transition fin group, the second fins are arranged non-parallel to the third intermediate transition fins, and the height of the third intermediate transition fins is lower than the height of the second fins.

[0017] Optionally, in the air-cooled radiator, the heat dissipation shell comprises a bottom plate, a top plate, two side plates and a back plate, the two side plates are respectively connected to the two ends of the back plate, the bottom end of the side plate and the bottom end of the back plate are connected to the bottom plate, and the top end of the side plate and the top end of the back plate are connected to the top plate; the first air inlet module is located at the bottom end of the heat dissipation fin group, the second air inlet module is located at the side end of the heat dissipation fin group, and the second air inlet module is located above the first air inlet module.

[0018] Optionally, in the air-cooled radiator, the side plate and the back plate form the wall surface of the heat dissipation cavity.

[0019] The back plate and / or at least one of the side plates is provided with the second fan.

[0020] Optionally, in the air-cooled radiator, the second fan is installed on the side plate, and the second air inlet faces the side plate.

[0021] The first fan is installed on the bottom plate, and the first air inlet faces the bottom plate.

[0022] Optionally, in the air-cooled radiator, the heat dissipation fin group comprises a first fin group and a first intermediate transition fin group separating two adjacent first fin groups; the distance between the first fin group and the first fan is less than the distance between the first intermediate transition fin group and the first fan, the first fan blows towards the first fin group and the first intermediate transition fin group at the same time, and the position wind resistance of the first fin group is greater than that of the first intermediate transition fin group.

[0023] Optionally, in the air-cooled radiator, the first fin group comprises a plurality of first fins arranged in sequence, and the first intermediate transition fin group comprises a plurality of first intermediate transition fins arranged in sequence.

[0024] The distance between two adjacent first intermediate transition fins is greater than the distance between two adjacent first fins, and / or the height of the first intermediate transition fin is lower than the height of the first fin, the height direction of the first intermediate transition fin being perpendicular to the cross section formed by the arrangement direction of the first intermediate transition fin, and the height direction of the first fin being perpendicular to the cross section formed by the arrangement direction of the first fin.

[0025] Optionally, in the air-cooled radiator, the heat dissipation fin group comprises a third fin group connecting the first air inlet and an air outlet arranged on the heat dissipation fin group, and the third fin group comprises third fins arranged in sequence.

[0026] Optionally, in the air-cooled radiator, it further comprises an air outlet fin group, the air outlet fin group is installed on the heat dissipation cavity, the air outlet fin group comprises fifth fins arranged in sequence; along the gas flow direction, the air outlet fin group is located downstream of the heat dissipation fin group.

[0027] A power conversion device comprising a heat generating device and an air-cooled radiator dissipating heat of the heat generating device, the air-cooled radiator being any one of the air-cooled radiators described above.

[0028] In the above technical solution, the air-cooled radiator provided by the utility model includes a heat dissipation shell, a heat dissipation fin group, a first air inlet module and a second air inlet module, and a heat dissipation cavity is arranged in the heat dissipation shell. The heat dissipation fin group is installed in the heat dissipation cavity, and the heat dissipation fin group has a first air inlet and a second air inlet. The first air inlet module includes a first fan, the first fan is installed at least one end of the heat dissipation fin group in the vertical direction, and the air outlet side of the first fan faces the first air inlet. The second air inlet module includes a second fan, the air outlet side of the second fan faces the second air inlet, and the axis of the first air inlet along the airflow direction intersects the axis of the second air inlet along the airflow direction.

[0029] As can be known from the above description, in the air-cooled radiator provided by the utility model, the air outlet side of the first fan faces the first air inlet, the air outlet side of the second fan faces the second air inlet, and the axis of the first air inlet along the airflow direction intersects the axis of the second air inlet along the airflow direction, that is, air is introduced into the air-cooled radiator in different directions, the air inlet amount of cold air is increased, and then the heat of the heat dissipation fin group can be conveniently taken away through heat exchange in time, and the heat dissipation efficiency of the power conversion equipment is improved. BRIEF DESCRIPTION OF DRAWINGS

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the utility model or the prior art, the accompanying drawings needed to be used in the embodiment or the prior art description will be briefly introduced below, and obviously, the accompanying drawings in the following description are only embodiments of the utility model, and other accompanying drawings can be obtained by the provided accompanying drawings without creative labor for those skilled in the art.

[0031] Figure 1 The structure schematic diagram of the first air-cooled radiator provided by the embodiment of the utility model;

[0032] Figure 2 The structure schematic diagram of the second air-cooled radiator provided by the embodiment of the utility model;

[0033] Figure 3 The structure schematic diagram of the third air-cooled radiator provided by the embodiment of the utility model;

[0034] Figure 4 The structure schematic diagram of the fourth air-cooled radiator provided by the embodiment of the utility model;

[0035] Figure 5 The structure schematic diagram of the fifth air-cooled radiator provided by the embodiment of the utility model;

[0036] Figure 6 The structure schematic diagram of the sixth air-cooled radiator provided by the embodiment of the utility model;

[0037] Figure 7This is a structural schematic diagram of the seventh type of air-cooled radiator provided in the embodiments of this utility model;

[0038] Figure 8 This is a schematic diagram of the structure of the eighth type of air-cooled radiator provided in this embodiment of the utility model;

[0039] Figure 9 A schematic diagram of the structure of the ninth type of air-cooled radiator provided in this embodiment of the utility model;

[0040] Figure 10 This is a structural schematic diagram of the tenth type of air-cooled radiator provided in this embodiment of the utility model;

[0041] Figure 11 This is a schematic diagram of the eleventh type of air-cooled radiator provided in this embodiment of the utility model;

[0042] Figure 12 This is a schematic diagram of the structure of the twelfth type of air-cooled radiator provided in this embodiment of the utility model;

[0043] Figure 13 This is a schematic diagram of the thirteenth air-cooled radiator provided in this embodiment of the utility model;

[0044] Figure 14 for Figure 13 The diagram shows the gas flow direction inside the air-cooled radiator.

[0045] Figure 15 This is a schematic diagram of the structure of the fourteenth air-cooled radiator provided in this embodiment of the utility model;

[0046] Figure 16 A schematic diagram showing the uniform arrangement of the first and second fins provided in an embodiment of this utility model;

[0047] Figure 17 This is a schematic diagram showing the non-uniform arrangement of the first and second fins provided in an embodiment of the present invention.

[0048] Figure 18 This is a schematic diagram showing the one-to-one connection and arrangement of the first and second fins provided in an embodiment of the present invention;

[0049] Figure 19 A schematic diagram showing the arrangement of a first fin and a first intermediate transition fin provided in an embodiment of this utility model;

[0050] Figure 20 This is a schematic diagram showing another arrangement of the first fin and the first intermediate transition fin provided in an embodiment of the present invention.

[0051] in Figures 1-20Middle: 1-First fan, 2-Bottom plate, 3-Side plate, 4-Second fin, 5-First fin, 6-First intermediate transition fin, 7-Second intermediate transition fin, 8-Second partition plate, 9-Back plate, 10-Heat generating device, 11-Flow guide, 12-First partition plate, 13-Third partition plate, 14-Intermediate air duct, 15-Fourth fin, 16-Third fin, 17-Second fan, 18-Third intermediate transition fin, 19-First air inlet, 20-Second air inlet, 21-Wind direction indicator, 22-Fifth fin. DETAILED DESCRIPTION

[0052] The core of the utility model is to provide a kind of air cooling radiator, to improve the heat dissipation efficiency of power conversion equipment.The other purpose of the utility model is to provide a kind of power conversion equipment comprising the air cooling radiator described above.

[0053] In order for those skilled in the art to better understand the technical scheme of the utility model, the utility model will be further described in detail below in conjunction with the drawings and embodiments.

[0054] In a specific embodiment, the air cooling radiator provided by the utility model embodiment comprises a heat dissipation shell, a heat dissipation fin group, a first air inlet module and a second air inlet module, and a heat dissipation cavity is arranged in the heat dissipation shell.

[0055] The heat dissipation fin group is installed in the heat dissipation cavity, and specifically, cold air enters the heat dissipation cavity and exchanges heat with the heat dissipation fin group.

[0056] As shown in Figure 1 and Figure 2 , the heat dissipation fin group has a first air inlet 19 and a second air inlet 20. Considering that hot air rises, but the bottom space is limited, in order to facilitate the timely dissipation of heat, preferably, the first air inlet 19 is located at the bottom end of the heat dissipation fin group, and the second air inlet 20 can be located at the side end of the heat dissipation fin group. Specifically, the air outlet of the heat dissipation fin group can be located at the top end. Among them, the side end of the heat dissipation fin group is connected with the top end of the heat dissipation fin group, and the lower side of the side end of the heat dissipation fin group is connected with the bottom end of the heat dissipation fin group.

[0057] Of course, the first air inlet 19 and the second air inlet 20 can also be located at the end of the opposite side of the heat dissipation fin group, and the end of the opposite side of the heat dissipation fin group is the side end of the heat dissipation fin group.

[0058] As shown in Figures 1 to 18 , the first air inlet module comprises a first fan 1, and the first fan 1 is installed at least one end of the vertical direction of the heat dissipation fin group, wherein the vertical direction of the heat dissipation fin group is the fin arrangement direction in the heat dissipation fin group. The air outlet side of the first fan 1 faces the first air inlet 19. Specifically, the airflow through the first air inlet 19 enters the heat dissipation fin group through the first fan 1.

[0059] As Figures 1 to 18 shown, the second air intake module includes a second fan 17, and the air outlet side of the second fan 17 faces the second air inlet 20. Specifically, the airflow passing through the second fan 17 enters the heat dissipation fin group through the second air inlet 20. The axis of the first air inlet 19 along the airflow direction intersects the axis of the second air inlet 20 along the airflow direction. Among them, the axis of the first air inlet 19 along the airflow direction is the airflow direction of the first air inlet 19 position, and the axis of the second air inlet 20 along the airflow direction is the airflow direction of the second air inlet 20.

[0060] From the above description, it can be seen that in the air-cooled radiator provided in the embodiments of the present application, the air outlet side of the first fan 1 faces the first air inlet 19, the air outlet side of the second fan 17 faces the second air inlet 20, and the axis of the first air inlet 19 along the airflow direction intersects the axis of the second air inlet 20 along the airflow direction, that is, the air-cooled radiator realizes air intake in different directions, increases the air intake amount of cold air, and thus facilitates the heat of the heat dissipation fin group to be carried out in time through heat exchange, thereby improving the heat dissipation efficiency of the power conversion device.

[0061] As Figures 1 to 4 In one specific embodiment, the heat dissipation fin group includes a first fin group, and the first air inlet and the second air inlet 20 are both used for air intake of the first fin group. The first fin group includes a plurality of first fins 5 arranged in sequence and at intervals, wherein the first fins 5 can be arranged at equal intervals or at unequal intervals. The air outlet sides of the first fan 1 and the second fan 17 both face the first fins 5.

[0062] As Figures 5 to 15 shown, in one specific embodiment, the heat dissipation fin group includes a first fin group and a second fin group. The first fin group includes a plurality of first fins 5 arranged in sequence and at intervals and the first air inlet 19, wherein the first fins 5 can be arranged at equal intervals or at unequal intervals. The second fin group includes a plurality of second fins 4 arranged in sequence and at intervals and the second air inlet 20, wherein the second fins 4 can be arranged at equal intervals or at unequal intervals.

[0063] As Figure 14 shown, the air outlet side of the first fan 1 faces the first fin 5, and the air outlet side of the second fan 17 faces the second fin 4. The arrow is a wind direction indication 21 for indicating the wind direction. The letters A, B, C, D, and E respectively represent the flow direction of the air intake airflow in the air-cooled radiator at different positions.

[0064] As Figures 16 to 18 shown, the arrow is a wind direction indication 21 for indicating the wind direction. At this time, the first fan 1 and the second fan 17 both face the first fin group.

[0065] The number of the first fins 5 and the second fins 4 can be the same or different. In order to facilitate the gas flow, preferably, the first fins 5 and the second fins 4 are both flat fin structures.

[0066] Specifically, the air outlet end of the first fin 5 is connected with the air inlet end of the second fin 4 one by one. When the arrangement density of the first fin 5 and the second fin 4 is different, the number of the first fin 5 and the second fin 4 is different, and the first fin 5 and the second fin 4 are partially connected.

[0067] Specifically, the height of the first fin 5 and the second fin 4 can be equal or different, wherein the height of the first fin 5 and the second fin 4 is the distance from the fixed position of the root of the first fin 5 and the second fin 4 to the free end. In order to make the gas flow along the preset path, the height of the first fin 5 and the second fin 4 is equal.

[0068] In specific work, the first fan 1 is in the open state, and the second fan 17 can be closed according to the need. For example, when the heat generation is small, the second fan 17 is closed, and the side plate 3 no longer takes in air. According to the working condition, the air volume is corrected by region. For example, when the loss increases under special working conditions, the second fan 17 can be opened according to the need. Specifically, when the loss is low, the second fan 17 can be closed or the rotating speed can be reduced; when the loss is high, the second fan 17 can be opened or the rotating speed can be full.

[0069] As shown in Figure 13 , 14 , 16-18, the included angle between the first fin 5 and the second fin 4 can be obtuse, that is, the first fin 5 is inclined relative to the second fin 4. Specifically, the included angle between the first fin 5 and the second fin 4 can be 100°-170°.

[0070] In order to facilitate the flat shape of the air-cooled radiator, preferably, the notch at the edge of the first fin group forms a fan accommodating cavity for accommodating the second fan 17. Alternatively, as shown in Figure 8 , the notch at the side of the second fin group forms a fan accommodating cavity for accommodating the second fan 17. Alternatively, as shown in Figure 11 , the side of the first fin group and the side of the second fin group together form a fan accommodating cavity for accommodating the second fan 17. For example, the second fin group is cut off in part to improve the uniformity of the air volume of the second fan 17. In another specific embodiment, the first fin group is concave and the second fin group is concave, that is, both are cut off in part to form a fan accommodating cavity for accommodating the second air inlet group.

[0071] As shown in Figures 6-12 and Figure 15As shown, the first fin group and the second fin group are separated to form a middle air passage 14 for the air inlet of the second fin group, wherein the distance between the first fin group and the second fin group is the air flow path size of the middle air passage 14.

[0072] Specifically, the air flow through the first air inlet 19 sequentially passes through the first fin group, the middle air passage 14 and the second fin group. By providing the middle air passage 14, the air flow through the second fan 17 can smoothly enter the second fin group.

[0073] As shown in Figure 6 , Figure 9 , Figure 10 and Figure 12 , in a specific embodiment, the air-cooled radiator further comprises a flow guide 11, which is arranged in the middle air passage 14. Specifically, the flow guide 11 can be a flat plate or a curved plate, etc. The flow guide 11 is arranged towards the air outlet side of the second fan 17 and the second air inlet 20 of the second fin group. In this way, the air flow through the second fan 17 changes direction under the action of the flow guide 11 and is directed towards the second fin group.

[0074] Specifically, the windward surface of the flow guide 11 opposite to the second air inlet group is arranged inclined to the center of the heat dissipation housing along the air flow direction. At this time, the extension surface of the windward surface of the flow guide 11 forms an acute angle with the arrangement direction of the fins in the second air inlet group, and the flow guide 11 can make the air volume of the second fan 17 almost entirely towards the heat dissipation fin group. Specifically, the flow guide 11 is arranged below the second fan 17, so that the air volume of the second fan 17 is directed upwards to the second fin 4. For example, the second fan 17 is arranged at the back of the heat dissipation housing, and the second fan 17 arranged at the back air inlet performs heat dissipation on the whole heat dissipation fin group through the flow guide 11 combined with the bottom air inlet.

[0075] As shown in Figure 14 , in a specific embodiment, the air-cooled radiator further comprises a third intermediate transition fin group, which comprises third intermediate transition fins 18 arranged in sequence and at intervals. The second fin group with two adjacent inclined teeth is separated by the third intermediate transition fin group. At this time, the air flow through the second fin group is directed towards the third intermediate transition fin group, and the air flow in the first fin group changes direction after flowing into the second fin group. Specifically, the number of third intermediate transition fins 18 between each adjacent second fin group is determined according to actual needs. The height of the third intermediate transition fin 18 is lower than the height of the second fin 4.

[0076] The interval between the two adjacent third intermediate transition fins 18 is greater than the interval between the two adjacent second fins 4. Of course, the fins can be arranged at intervals between the two adjacent second air inlets without fins, and the two adjacent third intermediate transition fin groups 18 can also be separated by straight-toothed fins, which can be arranged parallel to the first fin 5.

[0077] As shown in Figures 1 to 15 , the heat dissipation shell includes a bottom plate 2, a top plate, two side plates 3 and a back plate 9, the two side plates 3 are connected to the two ends of the back plate 9 respectively, the bottom end of the side plate 3 and the bottom end of the back plate 9 are connected with the bottom plate 2, the top end of the side plate 3 and the top end of the back plate 9 are connected with the top plate, and the second air inlet module is located above the first air inlet module. The first air inlet module is located at the bottom end of the heat dissipation fin group, realizing the bottom air inlet of the heat dissipation shell. The second air inlet module is located at the side end of the heat dissipation fin group, realizing the side air inlet of the heat dissipation shell.

[0078] Specifically, the side plate 3 and the back plate 9 form the wall surface of the heat dissipation cavity.

[0079] As shown in Figure 1 , the heat dissipation fin group includes a first fin group and a first intermediate transition fin group, and the distance between the first fin group and the first fan 1 is less than the distance between the first intermediate transition fin group and the first fan 1. Specifically, the first fin group can be provided with a plurality of first fin groups, and the adjacent two first fin groups are separated by the first intermediate transition fin group. Considering that the first intermediate transition fin group is far away from the first fan 1, in order to make the airflow of the first fan 1 blow to the first transition fin group more uniformly, realizing the more uniform air inlet of the heat dissipation fin group, preferably, the wind resistance of the position of the first fin group is greater than that of the first intermediate transition fin group, so that the airflow of the first fan 1 can flow smoothly to the position of the first transition fin group.

[0080] In a specific embodiment, the first fin group includes a plurality of first fins 5 arranged in sequence, and the first intermediate transition fin group includes a plurality of first intermediate transition fins 6 arranged in sequence. As shown in Figure 19 , the height of the first intermediate transition fin 6 is lower than the height of the first fin 5, wherein the height direction of the first intermediate transition fin 6 is perpendicular to the cross section formed by the arrangement direction of the first intermediate transition fin 6, and the height direction of the first fin 5 is perpendicular to the cross section formed by the arrangement direction of the first fin 5. In specific setting, the first intermediate transition fin 6 can be connected only with one wall surface of the heat dissipation shell of the air-cooled radiator, and the other wall surface opposite to the heat dissipation shell is isolated. Since the first intermediate transition fin group is far away from the first fan 1, by increasing the air inlet space at this position, it is convenient for the gas to flow to the position of the first intermediate transition fin group.

[0081] As described above, the heat dissipation fin group is provided with a second fin group, and the second fin group is located downstream of the first fin group and the first intermediate transition fin group. By such arrangement, the air blown from the first fin group and the first intermediate transition fin group can enter the second fin 4 for heat dissipation through the space at the isolated position of the first intermediate transition fin 6 and the heat dissipation shell.

[0082] As shown in Figure 20As shown, in another embodiment, the interval between two adjacent first intermediate transition fins 6 is greater than the interval between two adjacent first fins 5. One end of the first intermediate transition fin 6 can be connected to the second fin 4 of the second fin group. In this way, the air flow is facilitated to flow into the position of the first intermediate transition fin 6, and then the air flow is facilitated to flow into the second fin 4 for heat dissipation.

[0083] Of course, no fin structure can be arranged between the two adjacent first fin groups. Also, one first fan 1 can be arranged corresponding to each first fin group. Specifically, the first fin 5 can be arranged in multiple inclined directions to promote the uniformity of the flow field. For example, the angle between the first fin 5 and the horizontal direction is 60°, thereby reducing the area of the position between the first intermediate transition fin 6 or the two first fin groups.

[0084] As shown, Figure 2 In one embodiment, the heat dissipation fin group further includes a second intermediate transition fin 7 and a third fin group connecting the first air inlet 19 and the air outlet, and the third fin group includes a third fin 16. The height of the second intermediate transition fin 7 is lower than the height of the first fin 5 and the third fin 16. Specifically, the third fin group and the first fin group are connected through the second intermediate transition fin 7. Also, the interval between two adjacent second intermediate transition fins 7 is greater than the interval between two adjacent first fins 5.

[0085] As shown, Figure 2 In one embodiment, the second air inlet group is arranged on one side of the heat dissipation shell, and the third fin group, the second intermediate transition fin 7 and the first fin group are arranged in sequence along the horizontal direction.

[0086] Of course, the heat dissipation fin group can also not be provided with the third fin group, and the air flow of the first fan 1 is only directed to the second intermediate transition fin 7 and the first fin group. Specifically, the second intermediate transition fin 7 and the second fan 17 are located on the opposite sides of the first fin group, and in this way, the heat dissipation uniformity is improved.

[0087] As shown, Figure 3 In one embodiment, the second fan 17 is symmetrically distributed on the opposite sides of the first fin group, and the heat dissipation fin group further includes a fourth fin group, the fourth fin group includes a fourth fin 15, and the first fan 1 is used to blow air to the fourth fin group. The second intermediate transition fin 7 is connected between the fourth fin 15 and the first fin 5 and between the fourth fin 15 and the third fin 16, respectively.

[0088] As shown, Figure 4As shown, the fourth fins 15 can be connected with the first fins 5 and the third fins 16. The interval between two adjacent first fins 5 is different from the interval between two adjacent fourth fins 15. Since the airflow of the second fan 17 is also directed to the first fins 5, preferably, the interval between two adjacent first fins 5 is greater than the interval between two adjacent fourth fins 15. The angle between the fourth fins 15 and the second fins 4 is an obtuse angle, that is, the first fins 5 and the fourth fins 15 are both oblique teeth. Specifically, the angle between the fourth fins 15 and the second fins 4 is greater than the angle between the first fins 5 and the second fins 4. Preferably, the heights of the fourth fins 15, the first fins 5 and the third fins 16 are the same.

[0089] By the above arrangement, the uneven air volume caused by the combination of the first fins 5 and the fourth fins 15 with the second fins 4 is avoided. Specifically, the density of the fins can also be arranged, that is, the form of the louver with different densities is formed. Specifically, the density of the fins near the first fan 1 and the second fan 17 is greater, and the density of the fins far from the first fan 1 and the second fan 17 is smaller, thereby avoiding the uneven air volume in the heat dissipation fin group due to the lower air resistance.

[0090] As shown in Figure 13 and Figure 14 , at least one second fan 17 is installed on the side plate 3, preferably, two second fans 17 are installed on the two side plates 3, and at least one second fan 17 is installed on each side plate 3. At this time, the second air inlet 20 can be arranged towards the side plate 3.

[0091] As shown in Figure 15 , the second fan 17 can be installed on the back plate 9, and when multiple second fans 17 are arranged, the multiple second fans 17 are arranged in a row.

[0092] As shown in Figure 13 and Figure 14 , the air-cooled radiator further comprises an air outlet fin group, the air outlet fin group is installed in the heat dissipation cavity, and the air outlet fin group comprises fifth fins 22 arranged in sequence. Along the direction of gas flow, the air outlet fin group is located downstream of the heat dissipation fin group. Specifically, the fifth fins 22 can be the same as the traditional heat dissipation fins, specifically, straight-tooth heat dissipation, and the airflow in the heat dissipation fin group finally flows to the fifth fins 22 at the top for heat exchange and then is discharged.

[0093] The first fan 1 can be installed on the bottom plate 2, and specifically, multiple first fans 1 are arranged on the bottom plate 2. Preferably, the arrangement direction of the first fan 1 is the same as the arrangement direction of the first fin 5, the first air inlet 19 can be arranged towards the bottom plate 2, and at this time, the bottom plate 2 is provided with a ventilation hole.

[0094] As shown in Figure 3 and Figure 4As shown in the drawings, in one specific embodiment, the present application is provided with a plurality of second fans 17, which are symmetrically distributed on opposite sides of the first fin group. At this time, the second fans 17 can be installed on the side plates 3.

[0095] As shown in the drawings, in one specific embodiment, the present application is provided with a plurality of second fans 17, which are symmetrically distributed on opposite sides of the first fin group. At this time, the second fans 17 can be installed on the side plates 3. Figures 1 to 10 As shown in the drawings, in one specific embodiment, the air-cooled radiator further comprises a second baffle 8, one end of which is connected with the air inlet end of the second fin 4 at the middle end of the second air inlet group, and the other end is connected with the inner wall of the heat dissipation shell. Specifically, the second baffle 8 is arranged on opposite sides of the second air inlet group, and the air flow of the second fan 17 enters the position of the second fin 4 through the arrangement of the second baffle 8.

[0096] As shown in the drawings, in one specific embodiment, the air-cooled radiator further comprises a second baffle 8, one end of which is connected with the air inlet end of the second fin 4 at the middle end of the second air inlet group, and the other end is connected with the inner wall of the heat dissipation shell. Specifically, the second baffle 8 is arranged on opposite sides of the second air inlet group, and the air flow of the second fan 17 enters the position of the second fin 4 through the arrangement of the second baffle 8. Figure 11 As shown in the drawings, in one specific embodiment, the air-cooled radiator further comprises a third baffle 13, one end of which is connected with the air outlet end of the first fin 5 at the middle end of the first air inlet group, and the other end is connected with the inner wall of the heat dissipation shell. Specifically, the third baffle 13 is arranged on opposite sides of the first air inlet group, so as to avoid the cold air of the second fan 17 from flowing back to the position of the first fin 5. Alternatively, the third baffle 13 blocks the air outlet end of the edge of the first air inlet group.

[0097] Figure 13 As shown in the drawings, in one specific embodiment, the air-cooled radiator further comprises a first baffle 12, one end of which is connected with the air inlet end of the first fin 5 at the middle end of the first air inlet group, and the other end is connected with the inner wall of the heat dissipation shell. The first baffle 12, the heat dissipation shell and the first fin group form a first air inlet chamber for accommodating the first air inlet group. Specifically, the first baffle 12 can be arranged in a ring shape, so that the cold air of the first fan 1 enters the position of the first fin 5 in time. Figure 14

[0098] The air-cooled radiator provided by the present application can realize the combination of multiple air inlet directions through a low-cost air duct design, and can significantly improve the air inlet amount.

[0099] The power conversion device provided by the present application comprises a heat generating device 10 and an air-cooled radiator for dissipating heat of the heat generating device 10, wherein the air-cooled radiator is any one of the above-mentioned air-cooled radiators. The foregoing describes the specific structure of the air-cooled radiator, and the present application comprises the above-mentioned air-cooled radiator, and also has the above-mentioned technical effects.

[0100] Specifically, the power conversion device comprises a distributed inverter and / or a rectifier, etc.

[0101] The various embodiments in the specification are described in a progressive manner, and each embodiment focuses on the difference from other embodiments. The same or similar parts between the various embodiments can be mutually referred to.

[0102] ​​The above description of disclosed embodiments enables one of ordinary skill in the art to make or use the application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein can be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An air-cooled heat sink, characterized by The application relates to a heat dissipation device. The heat dissipation device comprises: a heat dissipation shell, wherein a heat dissipation cavity is arranged in the heat dissipation shell; a heat dissipation fin group, which is arranged in the heat dissipation cavity and has a first air inlet (19) and a second air inlet (20); a first air inlet module, which comprises a first fan (1) arranged at at least one end of the heat dissipation fin group in a vertical direction, and the air outlet side of the first fan (1) faces the first air inlet (19); 2. The air-cooled heat sink of claim 1, wherein, a second air inlet module, which comprises a second fan (17), the air outlet side of the second fan (17) faces the second air inlet (20), and the axis of the first air inlet (19) along the airflow direction intersects the axis of the second air inlet (20) along the airflow direction.

3. The air-cooled heat sink of claim 1, wherein, The heat dissipation fin group comprises a first fin group, the first fin group has the first air inlet (19) and the second air inlet (20), the first fin group comprises a plurality of first fins (5) arranged in sequence and at intervals, and the air outlet sides of the first fan (1) and the second fan (17) both face the first fins (5).

4. The air-cooled heat sink of claim 3, wherein, The heat dissipation fin group comprises a first fin group and a second fin group, the first fin group comprises a plurality of first fins (5) arranged in sequence and at intervals and the first air inlet (19), the second fin group comprises a plurality of second fins (4) arranged in sequence and at intervals and the second air inlet (20), the air outlet side of the first fan (1) faces the first fins (5), and the air outlet side of the second fan (17) faces the second fins (4).

5. The air-cooled heat sink of claim 3, wherein, The end portions of some fins of the first fin group and some fins of the second fin group are connected.

6. The air-cooled heat sink of claim 3, wherein, The first fin group and / or the second fin group are provided with side notches to form a fan accommodating cavity for accommodating the second fan (17).

7. The air-cooled heat sink of claim 6, wherein, An intermediate air duct (14) is formed between the first fin group and the second fin group to guide air inflow of the second fin group, and the air flow through the first air inlet (19) sequentially passes through the first fin group, the intermediate air duct (14) and the second fin group.

8. The air-cooled heat sink of claim 3, wherein, The heat dissipation device further comprises a flow guide member (11) arranged towards the air outlet side of the second fan (17) and the second air inlet (20) of the second fin group, and the flow guide member (11) is arranged in the intermediate air duct (14). The heat dissipation device further comprises a third intermediate transition fin group, which comprises third intermediate transition fins (18) arranged in sequence and at intervals, and two adjacent second fin groups provided with inclined teeth are separated by the third intermediate transition fin group, the second fins (4) and the third intermediate transition fins (18) are arranged in a non-parallel mode, and the height of the third intermediate transition fins (18) is lower than the height of the second fins (4).

9. The air-cooled heat sink of claim 1, wherein, The heat dissipation shell comprises a bottom plate (2), a top plate, two side plates (3) and a back plate (9), the two side plates (3) are connected to the two ends of the back plate (9) respectively, the bottom ends of the side plates (3) and the back plate (9) are connected with the bottom plate (2), and the top ends of the side plates (3) and the back plate (9) are connected with the top plate; the first air inlet module is located at the bottom end of the heat dissipation fin group, the second air inlet module is located at the side end of the heat dissipation fin group, and the second air inlet module is located above the first air inlet module.

10. The air-cooled heat sink of claim 9, wherein, The side plates (3) and the back plate (9) form the wall surface of the heat dissipation cavity; The back plate (9) and / or at least one of the side plates (3) is provided with the second fan (17).

11. The air-cooled heat sink of claim 10, wherein, The second fan (17) is installed on the side plate (3), and the second air inlet (20) faces the side plate (3); The first fan (1) is installed on the bottom plate (2), and the first air inlet (19) faces the bottom plate (2).

12. The air-cooled heat sink of claim 1, wherein, The heat dissipation fin group comprises a first fin group and a first intermediate transition fin group which is arranged between two adjacent first fin groups; the distance between the first fin group and the first fan (1) is less than the distance between the first intermediate transition fin group and the first fan (1), the first fan (1) blows towards the first fin group and the first intermediate transition fin group at the same time, and the air resistance at the position of the first fin group is greater than the air resistance at the position of the first intermediate transition fin group.

13. The air-cooled heat sink of claim 12, wherein, The first fin group comprises a plurality of first fins (5) arranged in sequence and at intervals, and the first intermediate transition fin group comprises a plurality of first intermediate transition fins (6) arranged in sequence and at intervals. The interval between two adjacent first intermediate transition fins (6) is greater than the interval between two adjacent first fins (5), and / or the height of the first intermediate transition fin (6) is lower than the height of the first fin (5); the height direction of the first intermediate transition fin (6) is perpendicular to the cross section formed by the arrangement direction of the first intermediate transition fin (6), and the height direction of the first fin (5) is perpendicular to the cross section formed by the arrangement direction of the first fin (5).

14. The air-cooled heat sink of claim 1, wherein, The heat dissipation fin group comprises a third fin group which connects the first air inlet (19) and is arranged at the air outlet of the heat dissipation fin group, and the third fin group comprises third fins (16) arranged in sequence and at intervals.

15. The air-cooled heat sink according to any one of claims 1-14, wherein, The air outlet fin group is further arranged in the heat dissipation cavity, and the air outlet fin group comprises fifth fins (22) arranged in sequence and at intervals; in the gas flow direction, the air outlet fin group is located downstream of the heat dissipation fin group.

16. A power conversion device comprising a heat generating device (10) and an air-cooled heat sink for dissipating heat from said heat generating device (10), characterized in that, The air cooling radiator is the air cooling radiator according to any one of claims 1-15.

Images