CN105072872A - Heat dissipation system for power device - Google Patents
Heat dissipation system for power device Download PDFInfo
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- CN105072872A CN105072872A CN201510480180.2A CN201510480180A CN105072872A CN 105072872 A CN105072872 A CN 105072872A CN 201510480180 A CN201510480180 A CN 201510480180A CN 105072872 A CN105072872 A CN 105072872A
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- radiator
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- tranferring
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Abstract
The invention provides a heat dissipation system for a power device, and relates to a radiator. The heat dissipation system comprises an internal radiator, an external cooler, a circulating pump (10) and an insulating pipe, wherein the internal radiator is a heat-transfer radiator; a heat transfer cavity is formed in the internal resistor; an input interface is formed in the lower part of the heat transfer cavity; an output interface is formed in the upper part of the heat transfer cavity; a pressing reed is arranged on the heat-transfer radiator, and is composed of a pressing surface, an elastic bend and a presser foot; the external cooler is composed of an expansion pipe, a cooling coil and a radiating fin; an insulating connection pipe comprises a delivery pipe and a reflux pipe; the input interface in the lower part of the heat-transfer radiator is connected to a circulating outlet of the external cooler through the delivery pipe and the circulating pump; and a reflux opening in the external cooler is connected to the output interface in the upper part of the heat-transfer radiator through the reflux pipe. According to the heat dissipation system, through circular flow of a heat transfer medium, heat generated by a power switch tube is removed; the size of the radiator is greatly reduced; the occupied space is reduced; and switch power supply is compact in structure, high in power density and small.
Description
Technical field
The present invention relates to a kind of radiator, be related specifically to a kind of radiator of plastic packaging power tube.
Background technology
Current, Switching Power Supply is widely used in fields such as industrial production, MSW disposal, communication, electric power, be reliable, stable, small-sized and high efficiency to the General Requirements of Switching Power Supply, high frequency makes Switching Power Supply remove Industrial Frequency Transformer, thus realizes high efficiency and miniaturization.But the power switch in Switching Power Supply operationally can generate heat, in order to enable the reliable and steady operation of Switching Power Supply, the heat that power switch pipe produces must leave in time, otherwise power switch pipe can be made to damage.General plastic packaging power switch pipe is dispelled the heat by Aluminium Radiator, plastic packaging power switch pipe passes to Aluminium Radiator heat, Aluminium Radiator is distributed peritropous for heat space by the air-cooled or natural type of cooling again, Aluminium Radiator must have enough efficiently radiates heat areas the heat that plastic packaging power switch pipe produces could to be left, therefore, conventional Aluminium Radiator volume is larger, there is the shortcoming that footprint is large and weight is large, have impact on the power density of Switching Power Supply, miniaturization is placed restrictions on.
Summary of the invention
The object of the invention is to make the radiator of power switch pipe footprint on circuit boards little, be convenient to power device layout on circuit boards, make Switching Power Supply compact conformation, power density is high, is beneficial to Switching Power Supply miniaturization.
A kind of cooling system for power device of the present invention, be made up of machine inner radiator, machine outer cooler 8, circulating pump 10 and insulated tube, it is characterized in that machine inner radiator is heat tranferring radiator, hot chamber 1-4 is moved in the body of heat tranferring radiator 1, the lower rearward side moving hot chamber 1-4 has input interface 1-1 to access, and the top moving hot chamber 1-4 has output interface 1-5 to pick out; Heat tranferring radiator 1 has and compresses reed 4, compress reed 4 to be made up of seal face 4-1, the curved 4-2 of elastic force and presser feet 4-3, seal face 4-1 is positioned at the interlude compressing reed 4, the both sides of seal face 4-1 are the curved 4-2 of elastic force arched upward, be respectively the presser feet 4-3 of L shape outside the curved 4-2 of elastic force on both sides, presser feet 4-3 has installation through hole; The outer cooler 8 of machine is made up of expansion tube 8-4, cooling coil 8-5 and radiating fin 8-3, expansion tube 8-4 and cooling coil 8-5 is embedded in radiating fin 8-3, expansion tube 8-4 there is refluxing opening 8-1 access, the upper end of cooling coil 8-5 is connected on expansion tube 8-4, and the lower end of cooling coil 8-5 has loop exit 8-6 to pick out; Insulated tube comprises feed tube 11 and return duct 7, the input interface 1-1 of heat tranferring radiator 1 bottom is connected to the outlet of circulating pump 10 by feed tube 11, the import of circulating pump 10 is connected on the loop exit 8-6 of the cooling coil 8-5 lower end of the outer cooler 8 of machine, and the refluxing opening 8-1 on the expansion tube 8-4 of the outer cooler 8 of machine is connected to the output interface 1-5 on heat tranferring radiator 1 top by return duct 7.
In the present invention, the plane for installation power switching tube is had before heat tranferring radiator 1, plane before heat tranferring radiator 1 there is the compression screw for fastening power switch pipe, have the spacing recess avoiding power switch pipe pin in the front lower of heat tranferring radiator 1; The lower end of heat tranferring radiator 1 is closed entity, has installation screw 1-2 in the closed body of heat tranferring radiator 1 lower end; The input interface 1-1 of heat tranferring radiator 1 and output interface 1-5 is respectively riffled tube dental structure, and input interface 1-1 moves thermal medium input adapter 2, and output interface 1-5 moves thermal medium out splice going splice 6; The hot chamber 1-4 that moves of heat tranferring radiator 1 is one section of circular straight hole or square straight hole or polygon straight hole, in circular straight hole or square straight hole, have cooling rib; The expansion tube 8-4 of the outer cooler 8 of machine there is respiratory siphon 8-2 to pick out; The radiating fin 8-3 of the outer cooler 8 of machine is that multi-disc is arranged, and the space between each radiating fin 8-3 forms radiating airflow passage.
When the present invention applies, heat conductive silica gel is coated at power switch pipe 3 radiating surface behind, again power switch pipe 3 is attached in the plane before heat tranferring radiator 1, then compression reed 4 is withheld on power switch pipe 3, the seal face 4-1 compressing reed 4 is pressed together on power switch pipe 3, screw with hold-down bolt in the compression screw of heat tranferring radiator 1 through the installation through hole on presser feet 4-3, the plane before the radiating surface of power switch pipe 3 behind and heat tranferring radiator 1 is made to carry out close contact, during concrete enforcement, rubber cushion 5 can be set between the seal face 4-1 compressing reed 4 and power switch pipe 3, make to carry out soft contact between seal face 4-1 with power switch pipe 3, avoid the excessive damage power switch pipe 3 of pressure, then heat tranferring radiator 1 being taken power switch pipe 3 is arranged on the circuit board of Switching Power Supply, by the measure using screw to screw in the installation screw 1-2 of heat tranferring radiator 1 through circuit board, heat tranferring radiator 1 is positioned on circuit boards, then the pin of power switch pipe 3 is welded on the circuit of circuit board, moving in cooling coil 8-5, the expansion tube 8-4 of the outer cooler 8 of hot chamber 1-4 and machine to add and move thermal medium at heat tranferring radiator 1, make reserved expansion space in expansion tube 8-4, move thermal medium be heated after volume can increase, expansion space be used for receiving move thermal medium be heated increase volume, the described thermal medium that moves comprises conduction oil or cooling water.Moving thermal medium adopts circulating pump 10 forced circulation mode to flow between heat tranferring radiator 1 and the outer cooler 8 of machine.The outer cooler 8 of machine adopts fan to force the type of cooling or cooling water heat exchanged form to carry out cooling.
During above-mentioned invention work, the heat that power switch pipe 3 produces is delivered to move by the wall body of heat tranferring radiator 1 and moves in thermal medium in hot chamber 1-4, move thermal medium to circulate mode, heat to be shifted out fast from heat tranferring radiator 1, in the outer cooler 8 of the machine that is sent to, force the type of cooling or cooling water heat exchanged form that heat is left by fan again, make to move thermal medium to be cooled, the cooled thermal medium that moves turns back to moving in hot chamber 1-4 of heat tranferring radiator 1 and recycles.In its course of work, adopt circulating pump 10 to make to move thermal medium in forced circulation mode to flow between heat tranferring radiator 1 and the outer cooler 8 of machine, the heat that power switch pipe 3 produces is delivered to moving of heat tranferring radiator 1 and moves in thermal medium in hot chamber 1-4, make to move thermal medium to be heated intensification, the thermal medium out splice going splice 7 that moves that thermal medium is forced to from moving 1-4 top, hot chamber that moves after heating up that is heated flows out, enter into the outer cooler 8 of machine by return duct 7 and carry out cooling, because cooling coil 8-5 is embedded in radiating fin 8-3, the heat moving thermal medium is distributed by radiating fin 8-3, make area of dissipation large, good heat dissipation effect, hot moves thermal medium after cooling, from machine, the loop exit 8-6 of the cooling coil 8-5 lower end of cooler 8 exports, the bottom sending into heat tranferring radiator 1 is forced to supplement into moving in hot chamber 1-4 by circulating pump 10, so go round and begin again, by moving circulating of thermal medium, the heat that power switch pipe 3 produces is left with heat-removing way, the radiator volume of power switch pipe 3 is reduced greatly, save the footprint of radiator on circuit board, facilitate the component placement on circuit board and configuration, make compact conformation on circuit board, thus make Switching Power Supply compact conformation, power density is high, miniaturized.High frequency switch power is when high-voltage large current work, loss during its on-state is large, caloric value is larger, the present invention adopts heat-removing way that the heat that power switch pipe 3 produces is dispelled the heat by the outer cooler 8 of machine, area of dissipation is large, forced circulation mode is adopted to make to move thermal medium, make that radiating rate is faster and efficiency is higher, effectively can solve the heat dissipation problem of high frequency switch power when high-voltage large current work, its cooling device does not occupy the space in machine, creates conditions to the miniaturization of Switching Power Supply.
In foregoing invention, installation power switching tube is carried out without the original installing hole on power switch pipe, and use compression reed 4 mode of withholding on power switch pipe 3 to carry out installation power switching tube, because the area of exerting pressure of the screw stitching surface compressing the original installing hole on the seal face 5-1 specific power switching tube on reed 4 is much larger, therefore, with compression reed 4 come installation power switching tube exert pressure evenly and more center, make the laminating of the radiating surface of power switch pipe 3 and heat tranferring radiator 1 tightr; Compress reed 4 and there is the curved 4-2 structure of elastic force, making seal face 4-1 have elasticity when compressing power switch pipe, loosening after avoiding device to expand with heat and contract with cold, thus guaranteeing that the laminating between the radiating surface of power switch pipe 3 and heat tranferring radiator 1 is tight all the time.
The invention has the beneficial effects as follows: a kind of cooling system for power device provided, by moving circulating of thermal medium, the heat that power switch pipe 3 produces is left with heat-removing way, the radiator volume of power switch pipe 3 is reduced greatly, save the footprint of radiator on circuit board, facilitate the component placement on circuit board and configuration, make board structure of circuit compact, thus make Switching Power Supply compact conformation, power density high, miniaturized.
Accompanying drawing explanation
Fig. 1 is a kind of cooling system structure figure for power device of the present invention.
Fig. 2 is the A-A profile of Fig. 1.
In figure: 1. heat tranferring radiator, 1-1. input interface, 1-2. installation screw, 1-3. spacing recess, 1-4. moves hot chamber, 1-5. output interface, 2. move thermal medium input adapter, 3. power switch pipe, 4. compress reed, 4-1. seal face, 4-2. elastic force is curved, 4-3. presser feet, 5. rubber cushion, 6. moves thermal medium out splice going splice, 7. return duct, 8. the outer cooler of machine, 8-1. refluxing opening, 8-2. respiratory siphon, 8-3. radiating fin, 8-4. expansion tube, 8-5. cooling coil, 8-6. loop exit, 9. communicating pipe, 10. circulating pump, 11. feed tubes.
Embodiment
embodiment 1in execution mode shown in Fig. 1, for the cooling system of power device, by machine inner radiator, the outer cooler 8 of machine, circulating pump 10 and insulated tube composition, it is characterized in that machine inner radiator is heat tranferring radiator, the plane for installation power switching tube is had before heat tranferring radiator 1, plane before heat tranferring radiator 1 there is the compression screw for fastening power switch pipe, the spacing recess avoiding power switch pipe pin is had in the front lower of heat tranferring radiator 1, the lower end of heat tranferring radiator 1 is closed entity, installation screw 1-2 is had in the closed body of heat tranferring radiator 1 lower end, hot chamber 1-4 is moved in the body of heat tranferring radiator 1, moving hot chamber 1-4 is one section of circular straight hole or square straight hole or polygon straight hole, cooling rib is had in circular straight hole or square straight hole, the lower rearward side moving hot chamber 1-4 has input interface 1-1 to access, the top moving hot chamber 1-4 has output interface 1-5 to pick out, input interface 1-1 and output interface 1-5 is respectively riffled tube dental structure, input interface 1-1 moves thermal medium input adapter 2, output interface 1-5 moves thermal medium out splice going splice 6, heat tranferring radiator 1 has and compresses reed 4, compress reed 4 to be made up of seal face 4-1, the curved 4-2 of elastic force and presser feet 4-3, seal face 4-1 is positioned at the interlude compressing reed 4, the both sides of seal face 4-1 are the curved 4-2 of elastic force arched upward, be respectively the presser feet 4-3 of L shape outside the curved 4-2 of elastic force on both sides, presser feet 4-3 has installation through hole, the outer cooler 8 of machine is made up of expansion tube 8-4, cooling coil 8-5 and radiating fin 8-3, radiating fin 8-3 is that multi-disc is arranged, space between each radiating fin 8-3 forms radiating airflow passage, expansion tube 8-4 and cooling coil 8-5 is embedded in radiating fin 8-3, expansion tube 8-4 there is refluxing opening 8-1 access, the upside wall body of expansion tube 8-4 has respiratory siphon 8-2 to pick out, the upper end of cooling coil 8-5 is connected on the downside wall body of expansion tube 8-4, and the lower end of cooling coil 8-5 has loop exit 8-6 to pick out, insulated tube comprises feed tube 11 and return duct 7, the input interface 1-1 of heat tranferring radiator 1 bottom is connected to the outlet of circulating pump 10 by feed tube 11, the import of circulating pump 10 is connected on the loop exit 8-6 of the cooling coil 8-5 lower end of the outer cooler 8 of machine, and the refluxing opening 8-1 on the expansion tube 8-4 of the outer cooler 8 of machine is connected to the output interface 1-5 on heat tranferring radiator 1 top by return duct 7.Described return duct 7 and feed tube 11 select half flexible pipe of polytetrafluoroethylmaterial material.
During the present embodiment application, heat conductive silica gel is coated at power switch pipe 3 radiating surface behind, again power switch pipe 3 is attached in the plane before heat tranferring radiator 1, then compression reed 4 is withheld on power switch pipe 3, the seal face 4-1 compressing reed 4 is pressed together on power switch pipe 3, screw with hold-down bolt in the compression screw of heat tranferring radiator 1 through the installation through hole on presser feet 4-3, the plane before the radiating surface of power switch pipe 3 behind and heat tranferring radiator 1 is made to carry out close contact, between the seal face 4-1 compressing reed 4 and power switch pipe 3, rubber cushion 5 is set, make to carry out soft contact between seal face 4-1 with power switch pipe 3, avoid the excessive damage power switch pipe 3 of pressure, then heat tranferring radiator 1 being taken power switch pipe 3 is arranged on the circuit board of Switching Power Supply, by the measure using screw to screw in the installation screw 1-2 of heat tranferring radiator 1 through circuit board, heat tranferring radiator 1 is positioned on circuit boards, then the pin of power switch pipe 3 is welded on the circuit of circuit board, moving in cooling coil 8-5, the expansion tube 8-4 of the outer cooler 8 of hot chamber 1-4 and machine to add and move thermal medium at heat tranferring radiator 1, make reserved expansion space in expansion tube 8-4, the described thermal medium that moves comprises conduction oil or cooling water.Moving thermal medium adopts circulating pump 10 forced circulation mode to flow between heat tranferring radiator 1 and the outer cooler 8 of machine.The outer cooler 8 of machine adopts fan to force the type of cooling or cooling water heat exchanged form to carry out cooling.
During the above embodiments work, the heat that power switch pipe 3 produces is delivered to move by the wall body of heat tranferring radiator 1 and moves in thermal medium in hot chamber 1-4, move thermal medium to circulate mode, heat to be shifted out fast from heat tranferring radiator 1, in the outer cooler 8 of the machine that is sent to, force the type of cooling or cooling water heat exchanged form that heat is left by fan again, make to move thermal medium to be cooled, the cooled thermal medium that moves turns back to moving in hot chamber 1-4 of heat tranferring radiator 1 and recycles.In its course of work, adopt circulating pump 10 to make to move thermal medium in forced circulation mode to flow between heat tranferring radiator 1 and the outer cooler 8 of machine, the heat that power switch pipe 3 produces is delivered to moving of heat tranferring radiator 1 and moves in thermal medium in hot chamber 1-4, make to move thermal medium to be heated intensification, the thermal medium out splice going splice 7 that moves that thermal medium is forced to from moving 1-4 top, hot chamber that moves after heating up that is heated flows out, enter into the outer cooler 8 of machine by return duct 7 and carry out cooling, because cooling coil 8-5 is embedded in radiating fin 8-3, the heat moving thermal medium is distributed by radiating fin 8-3, make area of dissipation large, good heat dissipation effect, hot moves thermal medium after cooling, from machine, the loop exit 8-6 of the cooling coil 8-5 lower end of cooler 8 exports, the bottom sending into heat tranferring radiator 1 is forced to supplement into moving in hot chamber 1-4 by circulating pump 10, so go round and begin again, by moving circulating of thermal medium, the heat that power switch pipe 3 produces is left with heat-removing way, the radiator volume of power switch pipe 3 is reduced greatly, save the footprint of radiator on circuit board, facilitate the component placement on circuit board and configuration, make compact conformation on circuit board, thus make Switching Power Supply compact conformation, power density is high, miniaturized.The present embodiment adopts heat-removing way that the heat that power switch pipe 3 produces is dispelled the heat by the outer cooler 8 of machine, area of dissipation is large, forced circulation mode is adopted to make to move thermal medium, make that radiating rate is faster and efficiency is high, its cooling device does not occupy the space in machine, creates conditions to the miniaturization of Switching Power Supply.
Claims (7)
1. the cooling system for power device, be made up of machine inner radiator, machine outer cooler (8), circulating pump (10) and insulated tube, it is characterized in that machine inner radiator is heat tranferring radiator, hot chamber (1-4) is moved in the body of heat tranferring radiator (1), the lower rearward side moving hot chamber (1-4) has input interface (1-1) to access, and the top moving hot chamber (1-4) has output interface (1-5) to pick out; Heat tranferring radiator (1) has compression reed (4), compress reed (4) to be made up of seal face (4-1), elastic force curved (4-2) and presser feet (4-3), seal face (4-1) is positioned at the interlude compressing reed (4), the both sides of seal face (4-1) are the elastic force curved (4-2) arched upward, elastic force curved (4-2) outside on both sides is respectively the presser feet (4-3) of L shape, and presser feet (4-3) has installation through hole; The outer cooler (8) of machine is made up of expansion tube (8-4), cooling coil (8-5) and radiating fin (8-3), expansion tube (8-4) and cooling coil (8-5) are embedded in radiating fin (8-3), expansion tube (8-4) there is refluxing opening (8-1) access, the upper end of cooling coil (8-5) is connected on expansion tube (8-4), and the lower end of cooling coil (8-5) has loop exit (8-6) to pick out; Insulated tube comprises feed tube (11) and return duct (7), the input interface (1-1) of heat tranferring radiator (1) bottom is connected to the outlet of circulating pump (10) by feed tube (11), the import of circulating pump (10) is connected on the loop exit (8-6) of cooling coil (8-5) lower end of the outer cooler (8) of machine, and the refluxing opening (8-1) on the expansion tube (8-4) of the outer cooler (8) of machine is connected to the output interface (1-5) on heat tranferring radiator (1) top by return duct (7).
2. a kind of cooling system for power device according to claim 1, it is characterized in that the plane had before heat tranferring radiator (1) for installation power switching tube, plane before heat tranferring radiator (1) there is the compression screw for fastening power switch pipe, have the spacing recess avoiding power switch pipe pin in the front lower of heat tranferring radiator (1).
3. a kind of cooling system for power device according to claim 1, is characterized in that the lower end of heat tranferring radiator (1) is closed entity, in the closed body of heat tranferring radiator (1) lower end, has installation screw (1-2).
4. a kind of cooling system for power device according to claim 1, it is characterized in that the input interface (1-1) of heat tranferring radiator (1) and output interface (1-5) are respectively riffled tube dental structure, input interface (1-1) moves thermal medium input adapter (2), output interface (1-5) moves thermal medium out splice going splice (6).
5. a kind of cooling system for power device according to claim 1, is characterized in that the hot chamber (1-4) of moving of heat tranferring radiator (1) is one section of circular straight hole or square straight hole or polygon straight hole, in circular straight hole or square straight hole, has cooling rib.
6. a kind of cooling system for power device according to claim 1, is characterized in that having respiratory siphon (8-2) to pick out on the expansion tube (8-4) of the outer cooler (8) of machine.
7. a kind of cooling system for power device according to claim 1, it is characterized in that the radiating fin (8-3) of the outer cooler (8) of machine is for multi-disc setting, the space between each radiating fin (8-3) forms radiating airflow passage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510480180.2A CN105072872A (en) | 2015-08-08 | 2015-08-08 | Heat dissipation system for power device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510480180.2A CN105072872A (en) | 2015-08-08 | 2015-08-08 | Heat dissipation system for power device |
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| CN105072872A true CN105072872A (en) | 2015-11-18 |
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| CN201510480180.2A Pending CN105072872A (en) | 2015-08-08 | 2015-08-08 | Heat dissipation system for power device |
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| US5130888A (en) * | 1984-05-31 | 1992-07-14 | Thermalloy Incorporated | Spring clip fastener for surface mounting of printed circuit board components |
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Application publication date: 20151118 |