CN208353800U - A kind of Switching Power Supply with insulation function - Google Patents

A kind of Switching Power Supply with insulation function Download PDF

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Publication number
CN208353800U
CN208353800U CN201820994733.5U CN201820994733U CN208353800U CN 208353800 U CN208353800 U CN 208353800U CN 201820994733 U CN201820994733 U CN 201820994733U CN 208353800 U CN208353800 U CN 208353800U
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China
Prior art keywords
power supply
circuit board
switching power
shell
pedestal
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Active
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CN201820994733.5U
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Chinese (zh)
Inventor
刘宏斌
王建涛
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Xi'an Aike Pusse Electronic Technology Co Ltd
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Xi'an Aike Pusse Electronic Technology Co Ltd
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Priority to CN201820994733.5U priority Critical patent/CN208353800U/en
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Abstract

The utility model provides a kind of Switching Power Supply with insulation function, including installing radiator body on circuit boards, the radiator body includes: pedestal, the multiple cooling fins of installation on the base, multiple cooling fins are arranged in parallel on the base at equal intervals, airflow channel is formed between abutting fins, insulation board is equipped between the pedestal and circuit board, thermal grease layer is equipped between the insulation board and the upper surface of circuit board, it is equipped with thermal grease layer between the insulation board and the lower surface of pedestal, opens up multiple heat release holes on the insulation board.Insulation board is arranged in the lower surface of pedestal in the utility model, by the upper and lower surface in insulation board, thermal grease layer is set, heat-conducting silicone grease made of composite material not only has good electrical insulating property, also there is preferable thermal conductivity, radiator also has the function of electrical isolation under the premise of having heat dissipation effect.

Description

A kind of Switching Power Supply with insulation function
Technical field
The utility model relates to Switching Power Supply field of radiating more particularly to a kind of Switching Power Supplies with insulation function.
Background technique
Power supply refers to the device that alternating current (especially alternating current) is converted to stable DC electricity, mainly sets to various electronics Available electricity.With the development of industry and science and technology, requirement of the various instruments to power quality is higher and higher.Especially in precision In the stabilization low-voltage of instrument requirements, general power supply is not able to satisfy the stable needs of instrument work.Power electronic technique is this It plays an important role in processing.
Switching Power Supply is the time ratio that control switch pipe turns on and off using modern power electronics technology, remains steady Determine a kind of power supply of output voltage.Switching Power Supply has many advantages, such as small in size, light-weight, high conversion efficiency, has a wide range of application.
PWM mode is used since Switching Power Supply work is most, the frequency spectrum of pulse signal is abundant, it is easy to interfere other circuits Work, thus outer casing of power supply is usually made of metal material, and the purpose of metal shell is exactly to shield electromagnetism, suitably reduction electromagnetism Interference.However, metal shell and radiator are all conductive, if circuit board leaks electricity, electric current can be by heat sink extremely Metal shell, operator accidentally touch metal shell, it may occur that electric shock accidents.
In view of this, it is necessary to Switching Power Supply in the prior art be improved, to solve the above problems.
Summary of the invention
The purpose of this utility model is to provide a kind of Switching Power Supplies with insulation function, by setting in radiator bottom Insulating layer is set, prevents the electric current transmission on circuit board, thus the casing insulation of protective switch power supply.
Realize that the technical solution of the utility model aim is as follows:
A kind of Switching Power Supply with insulation function, including installing radiator body on circuit boards, the radiator Ontology includes: pedestal, the multiple cooling fins of installation on the base, and multiple cooling fins are arranged in parallel on the base at equal intervals, phase Airflow channel is formed between adjacent cooling fin, and insulation board is equipped between the pedestal and circuit board, the insulation board and circuit board It is equipped with thermal grease layer between upper surface, thermal grease layer, the insulation are equipped between the insulation board and the lower surface of pedestal Multiple heat release holes are opened up on plate.
The circuit board is mounted on the housing cavity of Switching Power Supply by bracket as a further improvement of the utility model, Bottom surface on, the bracket includes at least two support columns, which is distributed in the corner of circuit board, the support column Lower surface is fixedly connected with the bottom surface of housing cavity, and the upper surface of the support column is fixedly connected with the lower surface of circuit board;
The circuit board is equipped with multiple through-holes, and the through-hole is staggered with heat release hole.
Have between the upper surface of the cooling fin and the roof of housing cavity as a further improvement of the utility model, Gap, the pedestal are arranged close to any side wall of circuit board, and radiator fan is equipped with above another side wall opposite with the side wall, The radiator fan is immobilized in the shell on the roof of chamber.
As a further improvement of the utility model, for install radiator fan roof be equipped with air inlet, it is described into Cool air hose is installed, which is connected to the air outlet of refrigeration equipment on air port.
Two sides opposite on each cooling fin are equipped with several uniformly as a further improvement of the utility model, The radiating fin of distribution, radiating fin oblique cutting is on the side wall of cooling fin, and the root of radiating fin is fixedly connected with the side wall of cooling fin.
Compared with prior art, the utility model has the beneficial effects that
1, insulation board is arranged in the lower surface of pedestal in the utility model, and heat-conducting silicone grease made of composite material not only has good Good electrical insulating property, also has preferable thermal conductivity, and radiator also has the function of electrical isolation under the premise of having heat dissipation effect Energy;
2, the utility model is on circuit board by opening up through-hole, opens up heat release hole on insulation board, heat release hole and logical Hole is staggered, the efficiency of transmission of heat on accelerating circuit plate, improves heat dissipation effect;
3, radiator and radiator fan are used cooperatively by the utility model, so that the heat dissipation effect of entire Switching Power Supply is more It is good;
4, by being evenly distributed with radiating fin in the opposite two side walls of cooling fin, the heat dissipation area on each cooling fin is increased 21%-35% improves the radiating efficiency of radiator.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of Switching Power Supply.
Fig. 2 is the stereoscopic schematic diagram one of shell.
Fig. 3 is the partial enlarged view of radiator and circuit board junction.
Fig. 4 is the stereoscopic schematic diagram two of shell.
In figure, 1, shell;11, air inlet;12, wind deflector lower end;13, air outlet;14, threading hole;15, support column;2, Radiator;21, insulation board;3, radiator fan;31, ventilating duct;4, wind deflector;5, attachment base;6, circuit board;7, cold wind;8, it connects Line terminals.
Specific embodiment
The utility model is described in detail in each embodiment shown in reference to the accompanying drawing, but it should be stated that, These embodiments are not limitation of the utility model, those of ordinary skill in the art according to these embodiments made by function Energy, method or equivalent transformation or substitution in structure, belong within the protection scope of the utility model.
In the description of the present embodiment, it is to be understood that term " center ", " longitudinal direction ", " transverse direction ", "upper", "lower", The orientation or positional relationship of the instructions such as "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside" is It is based on the orientation or positional relationship shown in the drawings, is merely for convenience of description the invention and simplifies description, rather than indicate Or imply that signified device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore cannot understand For the limitation to the invention.
In addition, term " first ", " second ", " third " etc. are used for description purposes only, it is not understood to indicate or imply Relative importance or the quantity for implicitly indicating indicated technical characteristic.The feature of " first ", " second " etc. is defined as a result, It can explicitly or implicitly include one or more of the features.In the description of the invention, unless otherwise indicated, The meaning of " plurality " is two or more.
Term " installation ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, be also possible to removable Connection is unloaded, or is integrally connected;It can be mechanical connection, be also possible to be electrically connected;It can be directly connected, it can also be in Between medium be indirectly connected, can be the connection inside two elements.For the ordinary skill in the art, can pass through Concrete condition understands concrete meaning of the above-mentioned term in the invention.
Switching Power Supply can generate a large amount of heat when working, if these heats being discharged cannot in time and be allowed to be in One reasonable horizontal, it will the normal work for influencing Switching Power Supply can damage Switching Power Supply when serious.Inside Switching Power Supply Temperature rise is excessively high, it will leads to the failure of the components such as thermally sensitive semiconductor devices, electrolytic capacitor.When temperature is more than certain When value, exponentially rule increases crash rate.Have statistics show electronic component temperature it is every increase 2 DEG C, reliability will under Drop 10%;Service life at 50 DEG C of temperature rise only has 1/6 at 25 °C of temperature rise.Other than electric stress, temperature is to influence Switching Power Supply The most important factor of reliability.High frequency switch power has powerful heating device, and temperature is even more to influence its reliability most One of important factor.
For the reliability for improving Switching Power Supply work, a kind of Switching Power Supply is present embodiments provided, as shown in Figure 1, Fig. 1 is The structural schematic diagram of Switching Power Supply, Switching Power Supply include shell 1, radiator 2, radiator fan 3, circuit board 6, for connecting outside The connecting terminal 8 of equipment, into shell 1 transporting cold wind cold air duct, wherein radiator 2, radiator fan 3, circuit board 6 connect Line terminals 8 are installed in shell 1, and connecting terminal 8 is electrically connected with the power output end of Switching Power Supply, connecting terminal 8 and circuit The upper surface of plate 6 couples, and radiator fan 3 closes on the setting of air inlet 11, is fixedly provided with wind deflector 4 in shell 1, the wind deflector 4 In the lower section of radiator fan 3, and setting is tilted down, wind deflector 4 is tilted to 13 direction of air outlet, and wind deflector 4 and radiation air Clamping between the axis of fan 3 is acute angle.Present embodiment is by the tilted installation wind deflector 4 of shell 1, from radiator fan 3 What the air-flow of entrance made air-flow after the shock of wind deflector 4 is oriented parallel to air outlet 13, and the air-flow for being parallel to air outlet 13 is taken away Heat on semiconductor element, so that fast cooling inside Switching Power Supply.It is preferred that shell 1 is equipped with air inlet 11 and air outlet 13, the outer wall of air inlet 11 is opened up on shell 1 and opens up the outer wall vertical of air outlet 13, is additionally provided with power supply source line on shell 1 and is worn The threading hole 14 crossed, air outlet 13 are made of several apertures.
The fixed form of wind deflector 4 and shell 1 can be grafting, clamping or hinged in present embodiment, it is contemplated that use Convenient, the mounting base of radiator fan 3 is fixedly connected with the inner wall for opening up air inlet 11, the fan wheel face air inlet of radiator fan 3 Mouth 11;The mounting base of radiator fan 3 is equipped with ventilating duct 31, and fan wheel is located at the inside of ventilating duct 31;The upper end of wind deflector 4 It is fixedly connected with the lower surface of ventilating duct 31, the lower end of wind deflector 4 is hanging.By the way that ventilating duct is arranged in the periphery of fan wheel 31, the wind entered in shell 1 is guided to the utilization rate for improving wind to wind deflector 4 completely by ventilating duct 31, is further reached fast The purpose of prompt drop temperature.
In view of accelerating cooling in shell 1, the service life of Switching Power Supply, the circuit board 6 in present embodiment can be extended It is installed in the bottom of 1 inner cavity of shell, there is gap, on circuit board 6 between 4 lower end of wind deflector and the upper surface of circuit board 6 Semiconductor element is between wind deflector 4 and air outlet 13.The partial heat that 6 semiconductor elements of circuit board give out is from gap Place's output is to 1 inner cavity of shell, and the heat that the air-flow and gap location entered from radiator fan 3 distributes generates heat exchange, after heat exchange It is discharged from air outlet 13, to accelerate to cool down.
The dust in air enters in shell 1 from air outlet 13 in order to prevent, and air outlet 13 is made of several apertures, if A dry aperture is evenly distributed on the same side wall of shell 1.Several apertures could be formed with a filter screen, filter out in air Solid particle, prevent dust from entering in shell.
Radiator 2 in present embodiment can be fixed on circuit board 6, can also be fixed on 1 inner wall of shell, as It is preferred that radiator 2 and radiator fan 3 are mounted on same inner wall, the lower end of radiator 2 is lower than the lower surface of radiator fan 3, The lower end of radiator 2 is extended with heat sink from peripheral wall to the lower section of radiator fan 3, between having between heat sink and wind deflector 4 Gap.Radiator fan 3 and radiator 2 are used cooperatively by present embodiment, achieve the purpose that rapid cooling.
In order to accelerate heat exchange, multiple heat-conducting silica gel sheets are staggeredly equipped on wind deflector 4, heat-conducting silica gel sheet is installed in wind deflector On 4.It is preferred that heat-conducting silica gel sheet be high-performance heat-conducting silica gel sheet XK-P80, high-performance heat-conducting silica gel sheet XK-P80 have high thermal conductivity, Height insulation, EMI suppression, thermal coefficient 7.9W, thickness can accomplish 0.5mm, use temperature -50 ~ 200 DEG C, superelevation proof voltage 15KV.It is high Performance heat-conducting silica gel sheet XK-P80 is high-order thermal conductive property, superelevation ceramic filler amount (nonmetallic) gasket, and high deflection has both good Good processability, either stamp are punched, long strip type, and deformity design can not be crushed not modification, high-performance heat-conducting silica gel sheet The suitable superelevation heat-producing device of hypotonic oil controlled uses, and carries slightly viscous, easy construction.
Heat-conducting silica gel sheet is arranged on wind deflector 4 in present embodiment, in the moment of cold wind contact wind deflector 4, by thermally conductive Silica gel piece reduces the bulk temperature in shell 1, lays the foundation to reduce the temperature of heater element in next step.
Due to the variation of variation and the load of environment temperature, dissipation thermal energy when power work, using fan and naturally cold But mode, which combines, faster to distribute thermal energy.This mode is while increasing fan cooling, it is possible to reduce dissipates Hot 2 area of device, so that power component work is under the conditions of metastable temperature field, service life will not become because of external condition It changes impacted.So not only overcome the power component of pure fan coolling pair radiate control lag the shortcomings that, also fan is avoided to make With the service life low global reliability for influencing rectifier.
If circuit board 6 leaks electricity, electric current can be transferred to metal shell by radiator 2, and operator accidentally touches metal shell, Electric shock accidents can occur.For this purpose, the radiator 2 of present embodiment includes pedestal, the multiple cooling fins of installation on the base, it is multiple Cooling fin is arranged in parallel on the base at equal intervals, and airflow channel is formed between abutting fins, and radiator 2 and circuit board 6 connect The partial enlarged view at place is connect as shown in figure 3, the bottom surface of pedestal is equipped with insulation board 21, insulation board 21 is contacted with circuit board 6, insulation board 21 are equipped with heat release hole.Present embodiment is by being arranged insulation board 21 in the lower surface of pedestal, and silica gel made of composite material is not Only there is good electrical insulating property, also there is preferable thermal conductivity, radiator 2 also has electricity under the premise of having heat dissipation effect The function of insulation.
Media of the insulation board 21 as transmitting heat had not only had excellent electrical insulating property but also had had excellent thermal conductivity, together When there is high-low temperature resistant, can be within the temperature range of -60 DEG C ~ 200 DEG C, long-term work and be not in air-dry hardening or fusing is existing As the preferred pcb board of insulation board 21, pcb board is aided with high thermal conductivity filler based on polysiloxanes, non-toxic and tasteless non-corrosive, Chemical Physics performance is stablized.
The connection type of circuit board 6 and shell 1, can be and be bonded or welded in present embodiment, for the ease of heat dissipation, originally The circuit board 6 of embodiment is mounted on the bottom surface of 1 inner cavity of shell of Switching Power Supply by bracket, and bracket includes at least two Dagger 15, the support column 15 are distributed in the corner of circuit board 6, and the bottom surface of the lower surface and 1 inner cavity of shell of support column 15 is fixed Connection, the upper surface of support column 15 is fixedly connected with the lower surface of circuit board 6;Circuit board 6 be equipped with multiple through-holes, through-hole and dissipate Hot hole is staggered.The setting of through-hole and heat release hole is to accelerate heat exchange.Present embodiment on circuit board 6 by opening If through-hole, heat release hole is opened up on insulation board 21, heat release hole and through-hole are staggered, the transmission effect of heat on accelerating circuit plate 6 Rate improves heat dissipation effect.
It is preferred that having gap, any of pedestal close to circuit board 6 between the roof of 1 inner cavity of upper surface and shell of cooling fin Side wall setting, another side wall top opposite with the side wall are equipped with radiator fan 3, and radiator fan 3 is fixed on the top of 1 inner cavity of shell On wall.Radiator 2 and radiator fan 3 are used cooperatively, so that the better heat-radiation effect of entire Switching Power Supply.
Roof for installing radiator fan 3 is equipped with air inlet 11, is equipped with cool air hose on air inlet 11, the cool air hose It is connected to the air outlet 13 of refrigeration equipment.The wind of the conveying of radiator fan 3 is natural wind or cold wind, it is contemplated that Switching Power Supply is in heat With area in use, the bad defect of natural wind heat dissipation effect, present embodiment install cool air hose, cool air hose on air inlet 11 It is connect with the air outlet 13 of refrigeration equipment, the transporting cold wind into shell 1, can quickly reduce the temperature in shell 1.
In view of rapid cooling, present embodiment two sides opposite on each cooling fin are equipped with several and are uniformly distributed Radiating fin, radiating fin oblique cutting is on the side wall of cooling fin, and the root of radiating fin is fixedly connected with the side wall of cooling fin.Pass through Radiating fin is evenly distributed in the opposite two side walls of cooling fin, the heat dissipation area on each cooling fin increases 21%-35%, improves The radiating efficiency of radiator 2.
Due to exporting air-flow close to 80% with the aperture of 4 face of wind deflector, the aperture export air-flow of side is only 20% or so, Usual threading hole 14 is located at the middle part of side wall of outer shell, and threading hole 14 will affect the heat dissipation effect of entire Switching Power Supply.For this purpose, this reality The perspective view of Switching Power Supply in mode is applied as shown in Fig. 2, being additionally provided with the threading hole 14 that power supply source line passes through on shell 1, air outlet 13 are made of several apertures, and wind deflector 4 is provided between air inlet 11 and air outlet 13, which is installed in shell 1 Inner cavity is staggeredly equipped with multiple heat-conducting silica gel sheets on wind deflector 4, and air inlet 11 is connected to cold air duct, and cold air duct is fixed on shell On body 1, threading hole 14 and several apertures are respectively positioned on same side wall, and threading hole 14 is located at the side of the side wall, the side wall Other positions be evenly equipped with aperture.The low side of air-flow export rate is arranged in threading hole 14 by present embodiment, is threaded meeting It is required that while, enhance air-out effect.
In order to be fallen off when solving the problems, such as that conducting wire is connect with connecting terminal 8 by external force, producer is in manufacture Switching Power Supply When, bolt can be set on connecting terminal 8, and the through-hole passed through for screwdriver is arranged in the roof of shell 1, and screwdriver is passed through from through-hole Afterwards, the end of screwdriver and threaded bolt contacts, for electric power connection line between nuts and connecting terminal 8, tightening bolt can be real The fixation of existing electric power connection line and connecting terminal 8.Screwdriver passes through through-hole and protrudes into 1 inner cavity of shell, can just tighten bolt.Due to logical The aperture in hole is smaller, and screwdriver can only be directed at bolt with feeling by operator, with the naked eye intuitively whether can not observe screwdriver It is directed at bolt.For this purpose, 1 structure of shell of present embodiment on the side wall of shell 1 as shown in figure 4, offer through slot, terminals Son 8 is arranged close to through slot, and circuit board 6 is equipped with the attachment base 5 of triangle, the horizontal plane of the attachment base 5 and the upper table of circuit board 6 Face is fixedly connected, and the vertical plane of attachment base 5 is contacted with the side wall of radiator 2, and connecting terminal 8 is arranged on the inclined-plane of attachment base 5, And the axis of connecting terminal 8 and the inclined-plane of attachment base 5 are perpendicular.By opened up on 1 side wall of shell of Switching Power Supply through slot, The attachment base 5 of triangle is set between connecting terminal 8 and wiring board, and the upper surface by connecting terminal 8 perpendicular to attachment base 5 is set It sets, screwdriver, which passes through through slot, just can tighten bolt.Present embodiment on the side wall of shell 1 by opening up through slot, connecting terminal 8 It is arranged close to through slot and is fixed on the inclined-plane of attachment base 5, when Switching Power Supply connects external equipment, screwdriver need to be only tilted and be inserted Enter through slot just and can contact the screw on connecting terminal 8, present embodiment has the advantages that easy to operate, easy to use.
In view of attachment base 5 needs to insulate, it is equipped with insulation board 21 in the lower surface of attachment base 5, power output end is sequentially worn It is electrically connected after crossing insulation board 21, attachment base 5 with the input terminal of connecting terminal 8.Since the attachment base 5 of present embodiment uses aluminium It is made, by the way that insulation board 21 is arranged in the bottom surface of attachment base 5, so that attachment base 5 is insulated, when preventing trial operation after operator's wiring Electric shock.
For the ease of tightening screw, the height of present embodiment middle groove is greater than the height of attachment base 5, in practical manufacture In, preferably the height of through slot is greater than two times of 5 height of attachment base.In wiring, screwdriver is convenient for tightening screw in this way.
Since the shell of Switching Power Supply is exposed for a long time in air, the particulate matter in air can be from through-hole access switch power supply Inside pollutes Switching Power Supply inside.Therefore, present embodiment is equipped with sealing cover, the sealing cover at the through slot of shell 1 It is made of rubber material, sealing cover is equipped with cable-through hole, and sealing cover and through slot are interference fitted.Due to the connection of sealing cover and through slot Mode is the prior art, and present embodiment repeats no more.By the way that sealing cover is arranged at through slot, sealing cover can be prevented in air Solid particulate matter enters inside shell 1, to guarantee the neat and tidy inside Switching Power Supply.
In order to accelerate to radiate, the attachment base 5 of present embodiment is made of aluminium, and the vertical plane of attachment base 5 is equipped with multiple The radiating fin being vertically arranged, the radiating fin oblique cutting is on the vertical plane of attachment base 5, and the root of radiating fin and the fixed company of vertical plane It connects.Present embodiment is made by the way that radiating fin, attachment base 5 are arranged on the vertical plane of attachment base 5 of aluminium, accelerating circuit plate 6 The efficiency of transmission of upper heat has the effect of accelerating heat dissipation.
Tool of the series of detailed descriptions listed above only for the feasible embodiment of the utility model Body explanation, they are all without departing from made by the utility model skill spirit not to limit the protection scope of the utility model Equivalent implementations or change should be included within the scope of protection of this utility model.
It is obvious to a person skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and And without departing substantially from the spirit or essential attributes of the utility model, it can realize that this is practical new in other specific forms Type.Therefore, in all respects, the present embodiments are to be considered as illustrative and not restrictive, this is practical new The range of type is indicated by the appended claims rather than the foregoing description, it is intended that containing for the equivalent requirements of the claims will be fallen in All changes in justice and range are embraced therein.It should not treat any reference in the claims as limiting Related claim.
In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should It considers the specification as a whole, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art The other embodiments being understood that.

Claims (5)

1. a kind of Switching Power Supply with insulation function, including the radiator body being mounted on circuit board (6), the radiator Ontology includes: pedestal, the multiple cooling fins of installation on the base, and multiple cooling fins are arranged in parallel on the base at equal intervals, phase Airflow channel is formed between adjacent cooling fin, which is characterized in that is equipped with insulation board (21) between the pedestal and circuit board (6), institute It states and is equipped with thermal grease layer, the following table of insulation board (21) and pedestal between insulation board (21) and the upper surface of circuit board (6) It is equipped with thermal grease layer between face, opens up multiple heat release holes on the insulation board (21).
2. the Switching Power Supply according to claim 1 with insulation function, which is characterized in that the circuit board (6) passes through Bracket is mounted on the bottom surface of shell (1) inner cavity of Switching Power Supply, and the bracket includes at least two support columns (15), the support Column (15) is distributed in the corner of circuit board (6), the fixed company in the lower surface of the support column (15) and the bottom surface of shell (1) inner cavity It connects, the upper surface of the support column (15) is fixedly connected with the lower surface of circuit board (6);
The circuit board (6) is equipped with multiple through-holes, and the through-hole is staggered with heat release hole.
3. the Switching Power Supply according to claim 1 or 2 with insulation function, which is characterized in that the cooling fin it is upper There is gap, the pedestal is arranged close to any side wall of circuit board (6), with this between surface and the roof of shell (1) inner cavity Radiator fan (3) are equipped with above the opposite another side wall of side wall, the radiator fan (3) is fixed on the roof of shell (1) inner cavity On.
4. the Switching Power Supply according to claim 3 with insulation function, which is characterized in that for installing radiator fan (3) roof is equipped with air inlet (11), is equipped with cool air hose on the air inlet (11), and the cool air hose and refrigeration equipment go out Air port (13) connection.
5. the Switching Power Supply according to claim 1 with insulation function, which is characterized in that phase on each cooling fin Pair two sides be equipped with several equally distributed radiating fins, radiating fin oblique cutting is on the side wall of cooling fin, and the root of radiating fin Portion is fixedly connected with the side wall of cooling fin.
CN201820994733.5U 2018-06-27 2018-06-27 A kind of Switching Power Supply with insulation function Active CN208353800U (en)

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Application Number Priority Date Filing Date Title
CN201820994733.5U CN208353800U (en) 2018-06-27 2018-06-27 A kind of Switching Power Supply with insulation function

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Application Number Priority Date Filing Date Title
CN201820994733.5U CN208353800U (en) 2018-06-27 2018-06-27 A kind of Switching Power Supply with insulation function

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110269283A (en) * 2019-07-29 2019-09-24 深圳小辣椒科技有限责任公司 It is a kind of to heat the electronic cigarette that do not burn

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110269283A (en) * 2019-07-29 2019-09-24 深圳小辣椒科技有限责任公司 It is a kind of to heat the electronic cigarette that do not burn

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