Heat dissipation structure and power equipment with same

Abstract

A heat dissipation structure is used for dissipating heat of a heating element in a power equipment box body and comprises a partition plate dividing the box body into a heat dissipation cavity and a power cavity which are distributed up and down, an air inlet is formed in the side face of the heat dissipation cavity of the box body, an air outlet is formed in the top of the box body, and a first fan is arranged at the position, corresponding to the air outlet, of the outer side of the box body; the heat dissipation structure is further provided with a siphon type heat dissipation device and a fixing device, the siphon type heat dissipation device comprises a condenser and an evaporator which are vertically communicated, the partition plate is provided with an installation hole, the siphon type heat dissipation device is vertically fixed in the installation hole in a penetrating mode through the fixing device, the condenser is located in the heat dissipation cavity, and the evaporator is located on the upper portion of the power cavity. The heat radiation structure can effectively absorb heat of the heating element at the upper part of the power cavity and reduce the temperature of the heating element through the arrangement of the siphon type radiator, and is simple and reliable in structure, very good in heat radiation effect and high in heat radiation efficiency. The utility model also discloses a power device.

Description

TECHNICAL FIELD

[0001] The utility model relates to electronic equipment technical field especially is related to a heat dissipation structure and have its power equipment. BACKGROUND

[0002] Power equipment is a kind of electronic equipment for converting and controlling electric energy, and is mostly used in inverter. With the gradual increase of inverter power density and protection requirements, the internal ring temperature of power equipment gradually becomes an important factor limiting product design. At present, power equipment mostly adopts water cooling heat dissipation, and the water-cooled radiator in power equipment is mainly used for heat dissipation of power devices in power equipment, and there is no heat dissipation structure specially designed for inductors, capacitors, conductive rows and switches in the internal of power equipment. The inductors, capacitors, conductive rows and switches in the internal of power equipment will generate stray heat, and these stray heat will cause the internal ring temperature of cabinet to rise, affecting the service life of power equipment.

[0003] Therefore, it is urgent to develop a heat dissipation structure with good heat dissipation effect. UTILITY MODEL CONTENT

[0004] The utility model aims at avoiding the deficiencies in the prior art and providing a heat dissipation structure with good heat dissipation effect and power equipment with the same, and aims at solving the above technical problems.

[0005] A heat dissipation structure for heat dissipation of heating elements in power equipment cabinet, comprising: a partition plate for separating the cabinet into a heat dissipation cavity and a power cavity distributed in upper and lower positions, a side surface of the heat dissipation cavity of the cabinet is provided with an air inlet, a top of the cabinet is provided with an air outlet, a first fan is arranged at a position corresponding to the air outlet outside the cabinet, and the heat dissipation structure is further provided with a siphon type radiator and a fixing device, the siphon type radiator comprises a condenser and an evaporator connected in series, the partition plate is provided with a mounting hole, the siphon type radiator is fixed in the mounting hole in vertical direction by the fixing device, the condenser is located in the heat dissipation cavity, and the evaporator is located in the upper part of the power cavity.

[0006] Preferably, the fixing device comprises a fixing plate arranged at the connection position of the condenser and the evaporator, and a fixing hole arranged on the fixing plate and used for fixing the siphon type radiator, the area of the fixing plate is larger than that of the mounting hole, the fixing plate is fixed on the partition plate, and the position of the fixing hole corresponds to that of the mounting hole.

[0007] Preferably, the fixing plate is provided with a first sealing strip at the connection position of the siphon type radiator.

[0008] Preferably, the mounting hole on the partition plate is provided with a second sealing strip around.

[0009] Preferably, the heat dissipation cavity is provided with air inlets around the four sides, and the condenser is opposite to the air inlet on the left side, and the air duct baffle is arranged on the left side of the condenser.

[0010] Preferably, the upper heat dissipation cavity is provided with a main heat sink, and the air inlet is below the main heat sink, and the main heat sink is a main heat sink with an anodized surface or an electrophoretic surface or a powder spraying surface, and the siphon heat sink is a siphon heat sink with an anodized surface or an electrophoretic surface or a powder spraying surface.

[0011] Preferably, the main heat sink is a V-shaped heat sink composed of a left heat dissipation plate and a right heat dissipation plate, the condenser comprises a first vertical condensing unit connected with the evaporator and a diagonal condensing unit connected with the first vertical condensing unit, and the diagonal condensing unit is arranged in parallel below the left heat dissipation plate.

[0012] Preferably, the main heat sink is a plate-shaped horizontal transverse arrangement, the condenser comprises a second vertical condensing unit connected with the evaporator and a horizontal condensing unit connected with the second vertical condensing unit, and the horizontal condensing unit is arranged in parallel below the main heat sink.

[0013] Preferably, the heat generating element is arranged on both sides of the evaporator, and the heat generating element away from the evaporator is provided with a second fan at one end.

[0014] The utility model discloses still a kind of power equipment, including box, the heat dissipation structure as described above is arranged in the box, and the power equipment further includes the heat generating element being arranged in the upper portion of the power cavity;The heat generating element is one or more than one arbitrary combination of capacitor, inductor, switch, conducting row.

[0015] The utility model discloses a heat dissipation structure of power equipment has the following advantages compared with prior art: the heat dissipation structure of the utility model sets up the siphon radiator that passes through and sets up the power cavity in the vertical heat dissipation cavity in the box of power equipment, and specifically, the heating element of power equipment can be set in the upper portion of power cavity according to need.

[0016] The heat dissipation structure of the utility model can effectively absorb the heat of the heating element in the upper portion of the power cavity, reduce the temperature of the heating element, and has simple and reliable structure, very good heat dissipation effect and high heat dissipation efficiency, so that the situation that the internal ring temperature of the power cavity is increased due to the stray heat, thereby affecting the service life of the power equipment, can be avoided, the reliability of the power equipment is greatly improved, and the service life of the power equipment is prolonged.

[0017] Similarly, the power equipment is provided with the heat dissipation structure specially for dissipating heat of the heating element, so that the temperature of the heating element is reduced, the reliability of the power equipment is greatly improved, and the service life of the power equipment is prolonged.

[0018] Meanwhile, the heat dissipation structure of the power equipment separates the box into the heat dissipation cavity and the power cavity distributed in upper and lower portions through the partition plate, the heat dissipation cavity and the power cavity are completely isolated, the power equipment can reach a high protection level and meet the use in various extreme environments under the condition that the power equipment has good heat dissipation effect. BRIEF DESCRIPTION OF DRAWINGS

[0019] The utility model is further illustrated by the drawings, but the embodiments in the drawings do not constitute any limitation on the utility model.

[0020] Figure 1 It is a structure schematic view of the heat dissipation structure of the utility model;

[0021] Figure 2 This is a schematic diagram of the structure of a siphon-type radiator according to the present invention.

[0022] Figure 3 This is a schematic diagram of the heat dissipation cavity of a heat dissipation structure according to this utility model;

[0023] Figure 4 This is an exploded view of the installation structure of a siphon-type radiator, a heat dissipation structure according to this utility model. Detailed Implementation

[0024] The present invention will be further described in conjunction with the following embodiments and accompanying drawings:

[0025] A heat dissipation structure is used to dissipate heat from the heat-generating element 14 inside the power device housing 10, such as... Figures 1 to 4 As shown, the structure includes: a partition 13 that divides the housing 10 into a heat dissipation cavity 11 and a power cavity 12 distributed vertically; an air inlet 15 is provided on the side of the heat dissipation cavity 11 of the housing 10; an air outlet 16 is provided on the top of the housing 10; a first fan 17 is provided at the corresponding position of the air outlet 16 on the outside of the housing 10; the heat dissipation structure also includes a siphon radiator 18 and a fixing device 19; the siphon radiator 18 includes a condenser 20 and an evaporator 21 connected vertically; the partition 13 is provided with a mounting hole 22; the siphon radiator 18 is vertically fixed in the mounting hole 22 by the fixing device 19; the condenser 20 is located in the heat dissipation cavity 11; and the evaporator 21 is located in the upper part of the power cavity 12.

[0026] Specifically, the heating element 14 can be any combination of one or more of the following: capacitor, inductor, switch, and busbar. The arrangement of the capacitor, inductor, switch, and busbar can be set as needed.

[0027] The heat dissipation structure is provided with a siphon type radiator 18 vertically penetrating the heat dissipation cavity 11 and the power cavity 12 in the box 10 of the power equipment, and specifically, the heating element 14 of the power equipment can be arranged in the upper part of the power cavity 12 according to the requirement. The condenser 20 is arranged in the heat dissipation cavity 11, and the evaporator 21 is arranged in the upper part of the power cavity 12. The siphon type radiator 18 is a siphon type radiator 18 of the prior art, which is usually provided with refrigerant therein. When working, the evaporator 21 absorbs the stray heat generated by the heating element 14 in the upper part of the power cavity 12, the refrigerant in the evaporator 21 is vaporized and rises to the condenser 20 after absorbing heat, the hot refrigerant is liquefied and flows back into the evaporator 21 after being cooled by the condenser 20, and the cold refrigerant absorbs heat in the evaporator 21 again, so that the heating element 14 is continuously cooled. The heat dissipation process of the condenser 20 is as follows: the first fan 17 at the top is started, and under the suction of the first fan 17, the cold air outside enters the heat dissipation cavity 11 from the air inlet 15, becomes hot air by absorbing the heat of the condenser 20 when passing through the condenser 20, and is discharged through the air outlet 16, thereby realizing the heat dissipation of the condenser 20 (the specific air circulation direction is shown by the dotted arrow direction of Figure 1 and Figure 3 .

[0028] The heat dissipation structure of the utility model can effectively absorb the heat of the heating element 14 in the upper part of the power cavity 12, reduce the temperature of the heating element 14, has simple and reliable structure, very good heat dissipation effect, high heat dissipation efficiency, can avoid the situation that the internal ring temperature of the power cavity 12 is increased due to the stray heat, and the service life of the power equipment is affected, greatly improves the reliability of the power equipment, and prolongs the service life of the power equipment.

[0029] Preferably, as Figure 1 , Figure 2 and Figure 4As shown, the fixing device 19 includes a fixing plate 23 arranged at the connecting position of the condenser 20 and the evaporator 21, and a fixing hole 24 arranged on the fixing plate 23 and passing through the fixed thermosyphon radiator 18. The area of the fixing plate 23 is larger than that of the mounting hole 22, the fixing plate 23 is fixed on the partition plate 13, and the fixing hole 24 corresponds to the position of the mounting hole 22. That is, the evaporator 21 of the thermosyphon radiator 18 passes through the fixing hole 24 and the mounting hole 22 in sequence, so that the evaporator 21 is located at the upper part of the power cavity 12. During installation, the thermosyphon radiator 18 can be first fixed on the fixing hole 24 of the fixing plate 23 outside the box body 10, and then the whole is fixed on the partition plate 13, and the thermosyphon radiator 18 passes through the mounting hole 22, which is pre-fabricated, so as to greatly reduce the installation difficulty. That is, the heat dissipation structure of the utility model passes through the mounting hole 22 of the partition plate 13 by the fixing device 19, the structure of the fixing device 19 is simple, the fixing and installation operation is simple, and the fixing is firm.

[0030] Preferably, as shown in Figure 2 and Figure 4 , the connecting position of the fixing plate 23 and the thermosyphon radiator 18 is provided with a first sealing strip 25. That is, when the thermosyphon radiator 18 is fixed on the fixing hole 24 of the fixing plate 23, there will be a gap between the thermosyphon radiator 18 and the fixing hole 24, which will affect the sealing performance and protection level of the power cavity 12 of the box body 10. Therefore, the first sealing strip 25 is arranged at the connecting position of the fixing plate 23 and the thermosyphon radiator 18, which can seal, waterproof and dustproof, and can greatly improve the sealing performance and protection level of the power cavity 12.

[0031] Preferably, as shown in 4, the mounting hole 22 on the partition plate 13 is provided with a second sealing strip 26 around. The second sealing strip 26 around the mounting hole 22 on the partition plate 13 can improve the sealing performance between the fixing plate 23 and the partition plate 13, achieve better dustproof and waterproof effect, and further improve the sealing performance and protection level of the power cavity 12.

[0032] Preferably, as shown in Figures 1 to 4 , the four sides of the heat dissipation cavity 11 of the box body 10 are provided with air inlets 15, the condenser 20 faces the air inlet 15 on the left side, and the two sides of the condenser 20 extend to the left and are provided with air duct baffles 27.

[0033] The four sides of the heat dissipation cavity 11 of the box body 10 are provided with air inlets 15, which can increase the air inlet amount of the heat dissipation cavity 11, increase the air circulation amount of the heat dissipation cavity 11, and further improve the heat dissipation efficiency of the siphon radiator 18. The condenser 20 is opposite to the air inlet 15 on the left side, that is, the condenser 20 is opposite to the windward surface of the air inlet 15, which increases the air inlet area and air inlet intensity of the condenser 20, and is more conducive to the full contact and full heat exchange between the cold air entering the heat dissipation cavity 11 from outside the box body 10 and the condenser 20, further improves the heat dissipation efficiency of the condenser 20, and has good heat dissipation effect. Of course, the condenser 20 can also be opposite to the air inlet 15 in any other direction as needed, as long as the condenser 20 is opposite to the windward surface of the air inlet 15. The air duct baffles 27 are arranged on the left side of the condenser 20, that is, the air duct baffles 27 on the two sides of the condenser 20 form an independent air duct of the condenser 20, which can ensure that the cold air entering from the left air inlet 15 flows to the condenser 20 under the action of the air duct, and the arrangement of the air duct is conducive to the concentration and intensity of the air flowing to the condenser 20, and is more conducive to the full contact and full heat exchange between the cold air entering the heat dissipation cavity 11 from outside the box body 10 and the condenser 20, further improves the heat dissipation efficiency of the condenser 20, and obtains better heat dissipation effect.

[0034] Preferably, as shown in Figure 1 and Figure 3 , the heat dissipation cavity 11 is provided with a main radiator 28, the air inlet 15 is located below the main radiator 28, the main radiator 28 is a main radiator 28 whose surface is treated by anodic oxidation or electrophoresis or powder spraying, and the siphon radiator 18 is a siphon radiator 18 whose surface is treated by anodic oxidation or electrophoresis or powder spraying.

[0035] The main radiator 28 is mainly used for dissipating heat of the main heat generating element 14 in the power cavity 12, such as diodes, triodes, insulated gate bipolar transistors and the like. The main radiator 28 can be a water-cooled heat exchanger of the prior art, or a phase change heat exchanger of the prior art. The main radiator 28 and the siphon radiator 18 cooperate to dissipate heat, have high heat dissipation efficiency, and have very good heat dissipation effect. The main radiator 28 and the condenser 20 share the heat dissipation cavity 11, and the structure is compact.

[0036] The air inlet 15 is located below the main radiator 28, which can ensure that all the air entering the heat dissipation cavity 11 from the air inlet 15 flows through the main radiator 28 for heat exchange before flowing out from the air outlet 16.

[0037] The surfaces of the main radiator 28 and the siphon radiator 18 are treated by anodic oxidation or electrophoresis or powder spraying, which can improve the corrosion resistance of the main radiator 28 and the siphon radiator 18, and meet different corrosion grade requirements.

[0038] Preferably, as shown in Figure 1 , Figure 2and Figure 4 As shown in the figure, the main radiator 28 is a V-shaped radiator composed of a left side heat sink 29 and a right side heat sink 30, the condenser 20 includes a first vertical condensing unit 31 connected with the evaporator 21 and an oblique condensing unit 32 connected with the first vertical condensing unit 31, and the oblique condensing unit 32 is arranged in parallel below the left side heat sink 29.

[0039] The main radiator 28 is arranged as a V-shaped radiator composed of a left side heat sink 29 and a right side heat sink 30, which can maximize the area of the main radiator 28 in a limited space, thereby improving the heat dissipation efficiency of the main radiator 28.

[0040] The condenser 20 includes a first vertical condensing unit 31 connected with the evaporator 21 and an oblique condensing unit 32 connected with the first vertical condensing unit 31, and the oblique condensing unit 32 is arranged in parallel below the left side heat sink 29. The first vertical condensing unit 31 connected with the evaporator 21 ensures that the hot refrigerant in the evaporator 21 enters the first vertical condensing unit 31 smoothly and well. The oblique condensing unit 32 is arranged in parallel below the left side heat sink 29, that is, the air in the air duct of the condenser 20 flows through the oblique condensing unit 32 and then through the left side heat sink 29 before flowing out from the air outlet 16. The condenser 20 includes a first vertical condensing unit 31 connected with the evaporator 21 and an oblique condensing unit 32 connected with the first vertical condensing unit 31, which can increase the heat dissipation area of the condenser 20 in the limited space of the heat dissipation cavity 11, thereby improving the heat dissipation efficiency of the condenser 20.

[0041] Alternatively, the main radiator 28 is arranged horizontally and laterally in a plate shape, and the condenser 20 includes a second vertical condensing unit (not shown in the figure) connected with the evaporator 21 and a lateral condensing unit (not shown in the figure) connected with the second vertical condensing unit (not shown in the figure), and the lateral condensing unit (not shown in the figure) is arranged in parallel below the main radiator 28.

[0042] Of course, the main radiator 28 can also be arranged horizontally and laterally in a plate shape, and the condenser 20 includes a second vertical condensing unit (not shown in the figure) connected with the evaporator 21 and a lateral condensing unit (not shown in the figure) connected with the second vertical condensing unit (not shown in the figure), that is, the heat dissipation area of the condenser 20 can be increased in the limited space of the heat dissipation cavity 11, thereby improving the heat dissipation efficiency of the condenser 20.

[0043] Preferably, as shown in the figure, Figure 1As shown, the heating element 14 is arranged on both sides of the evaporator 21, and one of the heating elements 14 is provided with the second fan 33 away from one end of the evaporator 21. The heating element 14 is arranged on both sides of the evaporator 21, and the distance is close, which is beneficial to the evaporator 21 to take away the heat of the heating element 14, improves the heat dissipation efficiency, and the heat dissipation effect is good. One of the heating elements 14 is provided with the second fan 33 away from one end of the evaporator 21, and after the second fan 33 is started, due to the suction of the second fan 33, the hot air of the heating element 14 located on the other side of the evaporator 21 is sucked to the evaporator 21, and after being cooled by the evaporator 21, the cold air is flowed into the heating element 14 on one side of the evaporator 21. The cold air absorbs the heat of the heating element 14 and is reflected back to the evaporator 21 through the inner wall of the box body 10 to dissipate heat. The use of the second fan 33 accelerates the air circulation in the upper part of the power cavity 12, which is beneficial to the heat dissipation of the heating elements 14 on both sides of the evaporator 21, and greatly improves the heat dissipation efficiency.

[0044] The utility model discloses still a kind of power equipment, including box 10, box 10 is provided with the heat dissipation structure as described above in it, and the power equipment further includes the heating element 14 arranged in the upper part of power cavity 12;Heating element can be one or more than one of arbitrary combination of capacitor, inductor, switch, conducting row, and the arrangement of capacitor, inductor, switch, conducting row can be set according to need.

[0045] Similarly, the power equipment of the utility model is provided with the heat dissipation structure specially for the heat dissipation of heating element 14, reduces the temperature of heating element 14, and the structure is simple and reliable, and the heat dissipation effect is very good, greatly improves the reliability of power equipment, prolongs the service life of power equipment. And because the heat dissipation effect of the power equipment of the utility model is good, the dense arrangement of power equipment can be realized, and then the power density of entire power system is improved, and the size and weight of entire power system are reduced.

[0046] Meanwhile, the heat dissipation structure of the power equipment of the utility model separates box 10 into heat dissipation cavity 11 and power cavity 12 distributed in upper and lower by partition 13, and heat dissipation cavity 11 and power cavity 12 are completely isolated, can ensure that power equipment has better heat dissipation effect, reaches higher protection grade under condition, satisfies the use of various extreme environments.

[0047] Finally, it should be noted that the above examples are used to illustrate the technical solutions of the utility model, and not to limit the protection scope of the utility model. Although the utility model has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the utility model can be modified or replaced equivalently without departing from the essence and scope of the utility model.

Claims

1. A heat dissipating structure for dissipating heat from a heat generating element in a power device housing, characterized by comprising: The application relates to a heat dissipation structure of a power device. The fixing device comprises a fixing plate arranged at the connecting position of the condenser and the evaporator, and a fixing hole arranged on the fixing plate and used for vertically penetrating and fixing the siphon type heat radiator, the area of the fixing plate is larger than that of the mounting hole, the fixing plate is fixed on the partition plate, and the fixing hole is in position correspondence with the mounting hole.

2. The heat dissipation structure according to claim 1, characterized in that: The connecting position of the fixing plate and the siphon type heat radiator is provided with a first sealing strip.

3. The heat dissipation structure of claim 2, wherein: The periphery of the mounting hole on the partition plate is provided with a second sealing strip.

4. The heat dissipation structure according to claim 3, characterized in that: The heat dissipation cavity of the box body is provided with air inlets around the periphery, the condenser faces the air inlet on the left side, and air duct baffles are arranged on the left sides of the condenser.

5. The heat dissipation structure according to claim 4, characterized in that: The heat dissipation cavity is provided with a main heat radiator, the air inlets are located below the main heat radiator, the main heat radiator is a main heat radiator with a surface subjected to anodic oxidation, electrophoresis or powder spraying treatment, and the siphon type heat radiator is a siphon type heat radiator with a surface subjected to anodic oxidation, electrophoresis or powder spraying treatment.

6. The heat dissipation structure according to claim 5, characterized in that: The main heat radiator is a V-shaped heat radiator composed of a left heat dissipation plate and a right heat dissipation plate, the condenser comprises a first vertical condensing unit connected with the evaporator and an inclined condensing unit connected with the first vertical condensing unit, and the inclined condensing unit is arranged in parallel below the left heat dissipation plate.

7. The heat dissipation structure of claim 6, wherein: The main heat radiator is arranged in a plate-shaped horizontal transverse mode, the condenser comprises a second vertical condensing unit connected with the evaporator and a horizontal condensing unit connected with the second vertical condensing unit, and the horizontal condensing unit is arranged in parallel below the main heat radiator.

8. The heat dissipation structure of claim 6, wherein: The heat generating elements are arranged on the two sides of the evaporator, and one end of the heat generating element away from the evaporator is provided with a second fan.

9. The heat dissipation structure according to claim 7 or 8, characterized in that: The box body is provided with the heat dissipation structure according to any one of claims 1 to 9, the power device further comprises heat generating elements arranged on the upper part of the power cavity, the heat generating elements are one or more than one of capacitors, inductors, switches and conductive rows in any combination.

10. A power device comprising a cabinet, characterized by: ​

Images