CN203537731U - Heat radiating device of high-frequency power supply cabinet - Google Patents

Heat radiating device of high-frequency power supply cabinet Download PDF

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Publication number
CN203537731U
CN203537731U CN201320691324.5U CN201320691324U CN203537731U CN 203537731 U CN203537731 U CN 203537731U CN 201320691324 U CN201320691324 U CN 201320691324U CN 203537731 U CN203537731 U CN 203537731U
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CN
China
Prior art keywords
heat
oil
main air
inverter
transformer
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Withdrawn - After Issue
Application number
CN201320691324.5U
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Chinese (zh)
Inventor
曲震
陈祥
刘宇芳
孔红兵
凌雁波
苗丰
虞敏
刘璐
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NANJING GUODIAN ENVIRONMENTAL PROTECTION TECHNOLOGY Co Ltd
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NANJING GUODIAN ENVIRONMENTAL PROTECTION TECHNOLOGY Co Ltd
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Priority to CN201320691324.5U priority Critical patent/CN203537731U/en
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Publication of CN203537731U publication Critical patent/CN203537731U/en
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Abstract

The utility model provides a heat radiating device of a high-frequency power supply cabinet, wherein a manner of circular combining air cooling and transformer oil is adopted. Heat radiations of two main heating assemblies, namely an inverter and a transformer, are separated and are controlled respectively, thereby effectively improving heat radiating efficiency and expanding selectivity of heat radiation control manner. The heat radiating device provided by the utility model comprises an inverter heat-radiating unit and a transformer heat-radiating unit. The inverter heat-radiating unit comprises an aluminum section heat radiator, heat radiating air channels and a heat radiating fan. The heat radiating air channels are divided into a middle main air channel and auxiliary air channels at two sides. An IGBT module and a busbar of the inverter are arranged on the front surface of the aluminum section heat radiator. The other surface of the aluminum section heat radiator is arranged on the main air channel. Heat radiating fins of the aluminum section heat radiator are arranged in the main air channel. Energy storage capacitors at two sides of the barbar are respectively arranged in the auxiliary air channels at two sides of the main air channel.

Description

A kind of high frequency electric source cabinet heat dissipation device
technical field:
The utility model relates to a kind of method for high frequency electric source cooling machine cabinet and related device, belongs to product thermal design field.
background technology:
High frequency electric source is as a kind of power supply device, its energy loss in power conversion process and the heating that causes is inevitable, if there is no effective radiating mode, the too high meeting of internal power device temperature rise directly affects its life and reliability, the power supply of built-in oil-filled transformer particularly, the too high meeting of inner oil temperature causes the aging and oil deterioration of insulating device, affects security of operation.Therefore the structure of heat abstractor is traditional difficult point of high frequency electric source cabinet structure design.
Meanwhile, along with power increases gradually, large power supply more than 120kW particularly, its thermal losses is generally more than 10kW, and equipment volume is generally limited in the narrow and small cabinet space of 1 cubic metre of left and right, its volume thermal power density is very high; Along with high frequency electric source product is day by day to miniaturization development now, this heat dispersion to power supply cabinet is had higher requirement.
Existing high frequency electric source rack adopts the mode of forced air cooling conventionally, at device interior, set up circulation air path, the heaters such as power device radiator, corrugated sheet of transformer are arranged in air channel, utilize external refrigeration air-flow to enter air channel, discharge cabinet after completing heat exchange.This radiating mode is practical, be convenient to safeguard, thereby comparatively universal, but for the less power supply of the larger volume of heat, its heat exchanger effectiveness but can not meet the demands.
summary of the invention:
The heat radiation difficult problem that the utility model brings for high-power high-frequency power volume Miniaturization Design, a kind of high frequency electric source cabinet heat dissipation device has been proposed, the mode that this device adopts forced air cooling to be combined with transformer oil circulation, the heat radiation of main two heat generating component-inverters and transformer is separated, and control respectively, effectively improved radiating efficiency, and the selectivity of radiating control mode has been expanded.
Concrete technical scheme of the present utility model is as follows:
A high frequency electric source cabinet heat dissipation device, this device comprises inverter heat-sink unit and transformer heat-sink unit, it is characterized in that:
Described inverter heat-sink unit comprises aluminum profile heat radiator, heat dissipation wind channel and cooling fan, main air duct in the middle of heat dissipation wind channel is divided into and the auxiliary air channel of both sides, the IGBT module of inverter and bus-bar middle part are arranged on the front of aluminum profile heat radiator, the radiating fin of this aluminum profile heat radiator is distributed in main air duct, the storage capacitor of bus-bar both sides is separately positioned in the auxiliary air channel of main air duct both sides, described main air duct is connected with the auxiliary air channel of both sides by dividing plate, on described dividing plate, have some ventilation holes, this ventilation hole will assist air channel to be communicated with main air duct; Described cooling fan is positioned at the bottom of device, and main air duct end opening is connected with cooling fan through tapering transition air channel;
Described transformer heat-sink unit comprises oil suction circulation line, wind cooling oil cooler, oil circulating pump and the oiling circulation line connecting successively, and each valve, described oil suction circulation line is also connected to the oil outlet of oil tank of transformer bottom, oiling circulation line is the oil filler point of connection transformer top of oil-tank also, and oily cooling blower is installed on the surface of wind cooling oil cooler.
Described oil suction circulation line and oiling circulation line all adopt stainless steel jointless hard tube and stainless steel ripple flexible pipe to connect to form, and are provided with active joint in both junctions.
Described oil cooler consists of radiator and axial flow blower, and both closely connect, and this radiator arranges respectively one into and out of hydraulic fluid port.
The upper slot in tapering transition air channel is connected with main air duct, and lower wealthy mouthful is connected with cooling fan through bellows.
This cooling fan is centrifugal type draught fan.
The fin of aluminum profile heat radiator is parallel with airflow direction in main air duct.
The air inlet of inverter heat-sink unit is provided with anti-dust filter mesh.
the utlity model has following beneficial effect:
1. the utility model is independent by high frequency electric source inverter heat-sink unit and transformer heat-sink unit, be convenient to targetedly under equipment different load, according to device different heat amount, two cooling blowers are carried out to the operations such as speed governing, start-stop, expanded the space of temperature control, extended fan life.
2. the cooling fan of inverter adopts external rotor air draught blower fan, by distinctive air channel structure, aluminum profile heat radiator is arranged in air channel, has both guaranteed, to the preferential heat radiation of concentrating of the core devices such as IGBT, to have taken into account again the heat radiation that the storage capacitor disperseing is installed.
3. the distinctive Duct design of the utility model, has increased the operation length in air channel, has ventilation hole to be communicated with between main and auxiliary air channel, and air-flow distribution uniform, can be provided with anti-dust filter mesh at air inlet simultaneously.
4. transformer heat-sink unit adopts forced oil-circulation heat radiation, by circulating pump, by transformer oil circulation on a large scale in fuel tank, has increased considerably heat convection efficiency in fuel tank; Simultaneously external radiator is that aluminum plate fin structure heat exchange area is larger, can effectively the deep fat of suction be carried out coolingly, is then back in fuel tank, reduces inner oil temperature.
5. transformer heat-sink unit is placed on side of cabinet, and the axial flow blower configuring can, by the direct sucking-off rack of spreader surface heat, be equipped with exhaust outlet on Side plate of machine cabinet.
6. two groups of heat-sink units of the utility model high frequency electric source rack configuration, efficiently solve the too high problem of high-power high-frequency power-supply device temperature rise in service, for it is long-term under full power condition, reliability service provides assurance.
accompanying drawing explanation:
Fig. 1 is the utility model device layout schematic diagram.
Fig. 2 is that the A-A of Fig. 1 is to view.
Fig. 3 is transformer heat-sink unit perspective view of the present utility model.
Fig. 4 is inverter heat-sink unit perspective view of the present utility model.
Fig. 5 is complete machine perspective view of the present utility model.
In figure: 1-inverter heat dissipation wind channel internal partition; 2-inverter install bin; 3-tapering transition air channel; 4-inverter cooling fan; 5-exhausting duct; 6-storage capacitor; 7-aluminum profile heat radiator; 8-IGBT module; 9-bus-bar; 10-oil tank of transformer; 11-inverter heat dissipation wind channel inner ventilation hole; 12-oil circulation cooling cellular installation case; 13-heat dissipation wind channel front fresh air inlet; 14-inverter heat-sink unit exhaust outlet; 15-oil cooler blower fan; 16-wind cooling oil cooler; 17-oiling circulation line; 18-oil circulating pump; 19-oil suction circulation line; 20-fresh air inlet; 21-main air duct; 22-assists air channel.
embodiment:
As shown in Figure 1 and Figure 2, the related heat abstractor of the utility model, for the distribution of high frequency electric source rack pyrotoxin, is divided into two parts of inverter heat-sink unit and transformation heat-sink unit.
Inverter is one of main heat generating components of high frequency electric source, a plurality of heat generating components, consists of, and is arranged in the cabinet space of a sealing, and this casing is positioned at the front of high frequency electric source rack.Inverter heat-sink unit is arranged on box outer surface, comprises aluminum profile heat radiator, heat dissipation wind channel and cooling fan, the main air duct in the middle of heat dissipation wind channel is divided into and the auxiliary air channel of both sides.In main air duct, arrange aluminum heat radiator fin, fin is parallel with airflow direction.The power device of inverter mainly contains IGBT, bus-bar, a plurality of storage capacitors etc., and the existing heater members of these devices has again heat-sensitive device.Wherein, IGBT, the main aluminum profile heat radiator that relies on of bus-bar heat radiation.
Transformer oil heat-sink unit is placed in the oily circulation cooling cellular installation case of high frequency electric source side of cabinet, is arranged on oil tank of transformer outside.Transformer oil heat-sink unit comprises oil suction circulation line 19, wind cooling oil cooler 16, oil circulating pump 18 and the oiling circulation line 17 connecting successively.The cooling fan that wind cooling oil cooler 17 configures the from the side ventilation hole of plate is realized air draft.Oil tank of transformer is the bogey of transformer oil, and transformer oil is as coolant.
Wind cooling oil cooler 16 is heat abstractors of transformer oil, and its structure is comprised of flat pipe type oil radiator and cooling fan.This oil cooler section is that after aluminum plate fin and flat tube pressing, soldering forms, and therefore have very large heat exchange area, and the conductive coefficient of aluminium own is higher; In its shell both sides, have respectively an oil-in and an oil-out, deep fat enters oil cooler through oil-in and completes heat exchange and discharge by oil-out.Cooling fan is closely connected with oil cooler, at oil cooler fin surface, carries out forced air cooling, accelerates its surperficial heat convection.
Oil circulating pump 18 adopts vane-type oil pumps, for managing interior oil circulation, provides power, by the suction of pump, fuel tank bottom deep fat is sucked to the pump housing, and system enters oil cooler by the road, and the cold oil after heat radiation is injected to fuel tank top oil-in, completes oil circulation.The high-pressure oil pipe of flowing through, enters wind cooling oil cooler.
Oil circuit piping system is the transfer passage of coolant, the note of this system, oil suction circulation line are combined mutually by hard seamless steel pipe and soft bellows, oil tank of transformer, circulating pump, wind cooling oil cooler, ball valve etc. are coupled together, pipeline material all adopts Stainless steel 316 L, and special flexible joint and sealing gasket guarantee its pressure-bearing and sealing effectiveness.
the course of work of inverter heat-sink unit is as follows:
As shown in Figure 4, Figure 5, high frequency electric source inverter is important heat generating component, comprises IGBT module 8, storage capacitor 6, bus-bar 9 etc.Above-mentioned heater members is installed in inverter install bin 2, and distribution area is comparatively extensive.Wherein IGBT module 8 is core devices, and its heat radiation must preferential guarantee, so this module and bus-bar 9 middle parts thereof etc. are installed on aluminum profile heat radiator 7, adopt soket head cap screw fastening, and both interfaces must be smeared heat-conducting silicone grease filling interface gap.Aluminum profile heat radiator 7 is fastened to main air duct 21 upper surfaces of inverter heat radiation, and its radiating fin is distributed in main air duct 21; Storage capacitor 6 is arranged on bus-bar 9 both sides, and sinks to 23 inside, auxiliary air channel of both sides.
Inverter cooling fan 4 provides cooling wind regime for inverter dispels the heat, and the mode that the air inlet of this blower fan is flexible coupling by ripple is docked with the lower wealthy mouth in tapering transition air channel 3, and on tapering transition air channel 3, slot docks with main air duct.When this cooling fan starts, cause in inverter heat dissipation wind channel and be negative pressure, part cooling blast enters main air duct 21 by heat dissipation wind channel front air inlet 13, and a part of cooling blast is entered by heat dissipation wind channel back side air inlet 20, and through both sides, auxiliary air channel 23 imports heat radiation main air duct 21.Flowed through before importing main air duct bus-bar 9, IGBT module 8, storage capacitor 6 surfaces of this two-way cooling blast carries out heat exchange, and its ambient heat is taken away; When cooling blast imports after main air duct, because duct cross-section is long-pending, narrow rapidly and cause wind speed quickening, flow-disturbing to strengthen, can concentrate heat radiation to the aluminum profile heat radiator 7 in this air channel, guarantee the cooling effect of IGBT module 8.After cooling blast flows out air channel, be inhaled into inverter cooling fan 4, this blower fan is centrifugal induced draught fan, after air-flow wind direction can being turned over and turning 90 degrees, by exhausting duct 5, directly discharges rack, completes the inverter flow process of dispelling the heat.Exhausting duct is one section of rectangular tubular air channel, and dock with fan outlet one end, and dock with cabinet bottom panel one end.
the course of work of transformer heat-sink unit is as follows:
As shown in Figure 3, transformer is the main heater members of high frequency electric source, in order to strengthen oil tank of transformer 10 internal convection heat exchange, sidewall at fuel tank is provided with two groups of pipe-line systems, be respectively oiling circulation line 17, oil suction circulation line 19, these pipelines are connected in series circulating pump oil tank of transformer 10, oil cooler radiator 16, oil circulating pump 18 etc., and the interface between different components is closely connected with loose joint by reducer union, and has configured respective seals.Meanwhile, for ease of operations such as assembling, maintenances, pipe-line system has all configured valve into and out of hydraulic fluid port; And local pipeline adopts the mode being flexible coupling, the dimensional discrepancy in compensating device installation.
The heat radiation circulation that oil circulating pump 18 is transformer oil provides power, when this pump is opened, oil tank of transformer 10 bottom deep fats are sucked to wind cooling oil cooler 16 by oil suction circulation line 19, in radiator, complete High Efficiency Thermal exchange, oil cooler blower fan 15 is arranged on wind cooling oil cooler 16 surfaces, and it is carried out to forced air cooling.Through above-mentioned radiator, complete cold oil after heat radiation by the fuel feed hole at oiling circulation line 17 injection transformer fuel tank 10 tops, so far completed oily heat radiation circulation.Under the above-mentioned driving that circulates in oil circulating pump 18, back and forth carry out, oily flow can generally can configure according to pump lift according to the configuration of oil pump lift, be generally not less than 8L/min, and the increase of oily circulation rate can significantly improve the heat-sinking capability of this system.
When high frequency electric source runs well, above-mentioned inverter heat-sink unit and the collaborative work of transformer heat-sink unit, wherein must control according to power supply caloric value: inverter cooling fan 4 rotating speeds can carry out speed governing according to the heating situation of power device the duration of runs of the Power Component such as blower fan, oil pump; The operating time of oil circulating pump 18 must be set according to temperature of oil in transformer.

Claims (7)

1. a high frequency electric source cabinet heat dissipation device, this device comprises inverter heat-sink unit and transformer heat-sink unit, it is characterized in that:
Described inverter heat-sink unit comprises aluminum profile heat radiator, heat dissipation wind channel and cooling fan, main air duct in the middle of heat dissipation wind channel is divided into and the auxiliary air channel of both sides, the front that the IGBT module of inverter and bus-bar are arranged on aluminum profile heat radiator, the radiating fin of this aluminum profile heat radiator is distributed in main air duct, the storage capacitor of bus-bar both sides is separately positioned in the auxiliary air channel of main air duct both sides, described main air duct is connected with the auxiliary air channel of both sides by dividing plate, on described dividing plate, have some ventilation holes, this ventilation hole will assist air channel to be communicated with main air duct; Described cooling fan is positioned at the bottom of device, and main air duct end opening is connected with cooling fan through tapering transition air channel.
2. high frequency electric source cabinet heat dissipation device according to claim 1, it is characterized in that: described transformer heat-sink unit comprises oil suction circulation line, wind cooling oil cooler, oil circulating pump and the oiling circulation line connecting successively, and each valve, described oil suction circulation line is also connected to the oil outlet of oil tank of transformer bottom, oiling circulation line is the oil filler point of connection transformer top of oil-tank also, and oily cooling blower is installed on the surface of wind cooling oil cooler.
3. high frequency electric source cabinet heat dissipation device according to claim 2, is characterized in that: described oil suction circulation line and oiling circulation line all adopt stainless steel jointless hard tube and stainless steel ripple flexible pipe to connect to form, and are provided with active joint in both junctions.
4. high frequency electric source cabinet heat dissipation device according to claim 3, is characterized in that: described oil cooler consists of radiator and axial flow blower, and both closely connect, and this radiator arranges respectively one into and out of hydraulic fluid port.
5. according to the high frequency electric source cabinet heat dissipation device described in claim 1,2,3 or 4, it is characterized in that: the upper slot in tapering transition air channel is connected with main air duct, lower wealthy mouthful is connected with cooling fan through bellows.
6. high frequency electric source cabinet heat dissipation device according to claim 5, is characterized in that: this cooling fan is centrifugal type draught fan.
7. high frequency electric source cabinet heat dissipation device according to claim 5, is characterized in that: the fin of aluminum profile heat radiator is parallel with airflow direction in main air duct.
CN201320691324.5U 2013-11-05 2013-11-05 Heat radiating device of high-frequency power supply cabinet Withdrawn - After Issue CN203537731U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201320691324.5U CN203537731U (en) 2013-11-05 2013-11-05 Heat radiating device of high-frequency power supply cabinet

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201320691324.5U CN203537731U (en) 2013-11-05 2013-11-05 Heat radiating device of high-frequency power supply cabinet

Publications (1)

Publication Number Publication Date
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103533816A (en) * 2013-11-05 2014-01-22 南京国电环保科技有限公司 Heat dissipation device for high-frequency power supply cabinet
CN106488691A (en) * 2016-12-08 2017-03-08 广东欧科空调制冷有限公司 Synchronous radiator structure inside and outside electric cabinet
CN110505795A (en) * 2019-08-26 2019-11-26 深圳市易光科技有限公司 A kind of LED drive power with overheating protection function

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103533816A (en) * 2013-11-05 2014-01-22 南京国电环保科技有限公司 Heat dissipation device for high-frequency power supply cabinet
CN103533816B (en) * 2013-11-05 2016-08-17 南京国电环保科技有限公司 A kind of high frequency electric source cabinet heat dissipation device
CN106488691A (en) * 2016-12-08 2017-03-08 广东欧科空调制冷有限公司 Synchronous radiator structure inside and outside electric cabinet
CN106488691B (en) * 2016-12-08 2019-03-29 广东欧科空调制冷有限公司 Synchronous radiator structure inside and outside electric cabinet
CN110505795A (en) * 2019-08-26 2019-11-26 深圳市易光科技有限公司 A kind of LED drive power with overheating protection function

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AV01 Patent right actively abandoned

Granted publication date: 20140409

Effective date of abandoning: 20160817

C25 Abandonment of patent right or utility model to avoid double patenting