CN208905262U - A kind of high-power outdoor radiating cabinet structure - Google Patents

Abstract

The utility model provides a kind of high-power outdoor radiating cabinet structure, including core radiating area and isolated heat radiation area, the fin air passage portion of module heat radiator are placed outside in core heat dissipation wind channel, and module and veneer are placed in isolated heat radiation area；Ceiling is using lower air inlet while enhancing functions of waterproof and dustproof, is aerated cooling to the air duct with the air blast of centrifugal blower positive pressure, introduces the uneven flow problem that honeycomb screen solves the air blast of centrifugal blower axial direction；Place the lower device of degree of protection in isolated heat radiation area, air heat exchanger is installed on rear side of cabinet, air-duct clapboard is set between the inlet and outlet recycled inside, heat dissipation path is planned to double " u "-shaped circuits, heat passed to by aluminium foil using hot-air in cabinet and the cabinet external environment temperature difference extraneous heat sink, complete machine upper entering and lower leaving wind, the low high reliablity of operating temperature after blower top set, core radiating area positive pressure dust-proof, Primary Component is not in contact with environment in cabinet, air-cooled disadvantage is evaded to greatest extent, inexpensive Duct design improves outdoor machine adaptive capacity to environment.

Description

A kind of high-power outdoor radiating cabinet structure

Technical field

The utility model relates to a kind of high-power outdoor machine technical field of heat dissipation, more particularly to a kind of high-power outdoor heat dissipation Cabinet structure.

Background technique

With growing stronger day by day for photovoltaic market, high-power photovoltaic inverter outdoor machine comes into being, and faces complicated and diversified External environment, such as salt fog, sand and dust, rainwater, condensation Special use occasion, converter module, dc circuit breaker, bus in cabinet How the low protective device such as capacitor, A.C. contactor, AC circuit breaker realizes the secure heat dissipation under high protection condition, while device Power density is constantly soaring, and power module and reactor loss accounting are up to 90% or more, and wherein the heat dissipation design of power module is deposited In the difference of exhausting and air blast, exhausting mode is affected to fan life, and blowing mode needs to solve inverter module samming and asks How topic realizes that efficient temperature uniforming heat radiation becomes design key node in more compact space；Reactor has the big hair of loss The characteristic that heat is not concentrated, it is difficult to low cost heat dissipation is realized inside airtight cavity.

There are bigger differences in dust-proof, samming, waterproof and conventional indoor cabinet for the heat dissipation of outdoor machine forced air cooling, generally high Degree of protection necessarily brings biggish windage, and excessively high so as to cause deficiency in draught device temperature rise, system reliability of operation is significantly It reduces.Fan is placed on bottom of cabinet bulk and dried radiator by some producers, and inverter integrally descends air inlet, upper outlet air, is easy in this way External dust is brought into inverter, the contamination grade of inverter is caused to increase；Some producers are basic by device It is all sealed in cabinet, causes to radiate bad.In addition to this conventional outdoor cabinet heat dissipation design there is problems:

In the parallel connection situation of heat dissipation wind channel more than 1., to solve each air duct device temperature equalization problem, exhausting forced air cooling side is mostly used Fan life caused by case easily brings interior environment dust stratification, operating ambient temperature to increase shortens, and positive pressure system dissipates multiple heat sources Local temperature uniforming heat radiation need to be solved the problems, such as when hot；

2. the lossy big characteristic that do not concentrate of generating heat of electromagnetic device, it is difficult to realize that low cost dissipates inside airtight cavity Heat；

3. increasing airflow fence using the high air pressure characteristics of centrifugal blower and being arranged immediately below reasonable duct dimension solution motor Air quantity unevenness problem；

4. to solve the problems, such as that part of devices is not high to dust sensitive reliability, divides the air duct of heat dissipation region, By main pyrotoxin heat dissipation channel and the direct wind-cooling heat dissipating of outside air, dust Sensitive Apparatus is placed in using air heat exchanger Independent closed cavity is cooling using indirect type air.

In conclusion how to set about from device heat dissipation characteristics and dust-free characteristics, meeting outdoor machine waterproof and dustproof, anti-salt Mist rationally designs respective heat dissipation wind channel under the premise of requiring, and the heat radiation sam and system radiating efficiency for improving Primary Component are Those skilled in the art's technical problem urgently to be resolved.

Summary of the invention

In order to overcome the above-mentioned problems of the prior art, the purpose of this utility model is to provide a kind of high-power open airs Radiating cabinet structure can effectively improve cabinet dustproof and waterproof salt spray proof ability, and effectively solve under positive draft radiating condition Primary Component not temperature equalization problem.

In order to achieve the above objectives, the utility model provides the following technical solutions.

A kind of high-power outdoor radiating cabinet structure, including two independent heat-dissipating cavities, core radiating area I and isolation radiating Area II, the core radiating area I and isolation radiating area II pass through power module air-duct clapboard 3-1 and reactor air-duct clapboard 3-2 It is isolated, the inlet air flow path in two kinds of sink zones is mutually indepedent, is independent of each other；

The core radiating area I is located at cabinet middle section, to strengthen heat loss through convection area, has air to contact with the external world, wraps Include ceiling air inlet structure I -1, inverter module radiator air passage I -2 and I -3 three, reactor air duct part；Ceiling air inlet knot I -1 lower part of structure is one section of vertical air channel structure, and the upper end in vertical air duct is provided with centrifugal blower 1-3, and centrifugal blower 1-3 is used The axial air-out mode of outlet air under upper air inlet, close to centrifugal blower 1-3 below be equipped with a honeycomb screen 1-4, rectification at exhaust air flue It is power module radiator 1-5 immediately below grid 1-4, heat radiator fin is vertical direction, and radiator only has finless parts and is located at Inside core radiating area I, power module 1-11 is in inside isolated heat radiation area II, immediately below power module radiator 1-5 It is installed on cabinet base for reactor 1-6, reactor 1-6；

The isolated heat radiation area II is arranged in an airtight cavity, interior using the difference in air temperature of inside and outside cavity The heat that portion's air carries is conducted by the aluminium film of heat exchange device for air to extraneous heat sink, and realization is to dust sensitive kinds device Isolated heat radiation function；Isolated heat radiation area II includes the left side of former and later two cavitys of cabinet and the air duct two sides of honeycomb screen 1-4 Upper return zone 5-1 and upper right return zone 5-3, the region power module radiator 1-5 non-fin air passage portion power mould The lower-left return zone 5-2 of the front and back cavity ventilation air duct part of return zone 5-5 and the two sides reactor 1-6 and bottom right are returned among block Wind area 5-4；Isolated heat radiation area and atmospheric environment are completely isolated, install air heat exchanger 2-1 in cabinet Rear Door, empty Interior of equipment cabinet is equipped with air outlet and return air inlet where gas-heat exchanger 2-1, and air outlet is located in isolated heat radiation area rear chamber Between position, return air inlet is located at the upper space in isolated heat radiation area, and the interior recycling air and return air inlet of air heat exchanger 2-1 Between be equipped with " u "-shaped air duct front baffle 2-3, ac filter capacitor 2-2 is installed above the front baffle 2-3 of " u "-shaped air duct, lower section is put A.C. contactor 2-4 and AC circuit breaker 2-5 are set, the front cavity lower inside in isolated heat radiation area is placed with dc circuit breaker 2- 6, the adjacent isolated heat radiation area in the front of power module radiator 1-5 is placed with bus capacitor 2-7, the front side bus capacitor 2-7 Deflector 2-8 is installed between cabinet door.

The core radiating area I only has power module radiator finless parts and contacts with ambient atmosphere, is connected to radiator On module and control veneer etc. be in isolated heat radiation area, realize the high protection heat sinking function of the low cost of power module.

I -1 lower section of ceiling air inlet structure of the core radiating area I places centrifugal blower 1-3 and uses axial air-out mode, Outlet air end face and power module radiator 1-5 air inlet distance are one impeller diameter of honeycomb screen, and in centrifugal blower Axial-running Out Increase honeycomb screen 1-4 in wind air duct and eliminate centrifugal fan motor leeward side local air flowing blind area, to eliminate centrifugal blower The influence of area power module heat radiator deficiency in draught immediately below motor.

Core radiating area air-flow cools down direction design aspect, and centrifugal blower 1-3 is placed in cabinet top, ensure that cabinet ventilation wind Positive pressure operating mode is in road, leeward side dust stratification is asked inside air duct where avoiding reactor 1-6, power module radiator 1-5 Topic；Designing around reactor 1-6 coil has " returning " shape orifice plate 1-7, strengthens the heat convection effect of reactor line packet part；It is another Aspect carries out end seal processing to the surface reactor 1-6, and utmostly reduction salt fog and wet environment insulate to reactor line packet Adverse effect.

The built-in dual labyrinth of the ceiling air inlet structure I -1 avoids rainwater from directly impacting air inlet vertical using lower air intake passage Face, air inlet upper surface attach dust-proof cotton or Air Filter 1-1, cooperate air-flow air inlet mode from bottom to top, realize to cold air primary Filtering guarantees that internal cooling air-flow sanitary safe reliably radiates, baffle 1-2 in labyrinth is arranged in ceiling air inlet structure I -1.

Device belongs to dust sensitive kinds device in isolated heat radiation area II, and air heat exchanger 2-1 uses embedded extension Wall is installed on cabinet rear panel, and outwardly and inwardly two cold cyclings are mutually isolated for cabinet body, utilizes hot-air in cabinet and cabinet outer ring The border temperature difference passes to heat by aluminium foil extraneous heat sink, and the path in cooling air-flow circuit is U-typed, successively passes through ac contactor Device 2-4, AC circuit breaker 2-5, dc circuit breaker 2-6, dc-link capacitance 2-7, ac filter capacitor 2-2 are followed to reach The purpose of device in ring cooling cabinet.

The periphery the reactor 1-6 is equipped with the bottom " going back to " shape orifice plate 1-7, reactor 1-6 and is equipped with outlet air protection protective net 1-8, pedestal front and back sides are equipped with air exhausting grille 1-9.

Each three pieces blade of the honeycomb screen 1-4 or so, arranges spacing 50mm by 45 degree of blade angle, single blade width 90mm, Mounting height is located at centrifugal blower 1-3 and the intermediate altitude of power module radiator 1-5 air inlet distance.

Compared with prior art, utility model has the advantages that

First, the filtering of lower air inlet and the design of dual labyrinth structure of ceiling air inlet structure significantly improve the rainwater-proof of cabinet The ability of impact, and structure more compact and reasonable；

Second, solve centrifugation by increasing means, the novelties such as honeycomb screen, optimization fan outlet and radiator distance The cooling multiple air duct mass flow discrepancy problems of positive pressure air blast under blower axial direction outlet air application conditions, using numerical simulation conclusion table Bright: by taking three radiator outlet air as an example, intermediate heat sink air output subtracts lower than two sides blower air output from 12.6% before optimization As low as 1.4%, theoretically realize the samming optimized design of multiple modules；

Third is the blower near air inlet first compared to traditional exhausting scheme, work from device service life It is substantially reduced as environment temperature, bearing lubrication longer life expectancy；Secondly core power device and veneer drive part are located at closed chamber In vivo, while to the sensitive Switch device of dust, veneer device, capacitance kind device it is respectively positioned on closed chamber isolated heat radiation area, Its working environment is independently of external environment without by baneful influence；After reactor is using end seal processing, to the moisture of external environment, Salt fog adaptability is stronger, strengthens heat dissipation design using the orifice-plate type forced air cooling part throttle of " returning " shape, heat dissipation while is taken into account The ideal operation environment of each device, to improve service life and the reliability of complete machine；4th, in conjunction with device temperature-resistance characteristic, design The cooling smoothly optimization of optimal device, fan delivery utilization efficiency is higher, is successively used to coolant core power using centrifugal blower Module and reactor section fever, substantially increase the utilization rate of cooling air-flow.

Detailed description of the invention

Fig. 1 outdoor machine subregion schematic diagram.

Fig. 2 outdoor machine core radiating area subregion schematic diagram.

Fig. 3 outdoor cabinet vertical structure diagrammatic cross-section.

Fig. 4 outdoor cabinet power module radiator transverse structure diagrammatic cross-section.

Fig. 5 outdoor cabinet core radiating area inverter module heat dissipation wind channel schematic cross-section.

Fig. 6 outdoor cabinet core radiating area longitudinal heat flux schematic diagram.

Fig. 7 outdoor cabinet core radiating area lateral heat flow schematic diagram.

Fig. 8 outdoor cabinet isolated heat radiation area longitudinal heat flux schematic diagram.

Fig. 9 outdoor cabinet isolated heat radiation area lateral heat flow schematic diagram.

Figure 10 honeycomb screen structure chart.

In figure: I core radiating area, I -1 ceiling air inlet structure, I -2 inverter module heat dissipation wind channel, I -3 reactor air duct The dust-proof cotton of II isolation radiating area 1-1 or the labyrinth Air Filter 1-2 baffle 1-3 centrifugal blower 1-4 honeycomb screen 1-5 power mould Module radiator 1-6 reactor 1-7 " returns " shape orifice plate 1-8 outlet air protective net 1-9 air exhausting grille 1-10 ceiling shell 1-11 Power module 2-1 air heat exchanger 2-2 ac filter capacitor 2-3 " u "-shaped air duct front baffle 2-4 A.C. contactor 2- On 5 AC circuit breaker 2-6 dc circuit breaker 2-7 bus capacitor 2-8 deflector 2-9 front cavity upper spacer 2-10 rear chambers The closed zone of silence 4-3 of the partition 3-1 power module air-duct clapboard closed zone of silence 4-2 of 3-2 reactor air-duct clapboard 4-1 is close Close the upper left the zone of silence 4-4 closed zone of silence 5-1 lower-left the return zone 5-2 bottom right return zone 5-3 upper right return zone 5-4 return air Return zone among area's 5-5 power module

" ⊙ " indicates that air-flow is flowed out along paper vertical direction；

" ⊕ " indicates that air-flow is flowed into along paper vertical direction；

Specific embodiment

It is with reference to the accompanying drawing and specific real to make those skilled in the art more fully understand the technical solution of the utility model It applies mode outdoor machine structure and radiating principle are described in further detail.Obviously, described embodiment is utility model one Section Example is not all of embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are not doing All embodiments obtained under the premise of creative work out, belong to the protection scope of the utility model.

The utility model outdoor cabinet partitioned core thought is as follows, and isolating device fever ontology and heat dissipation wind channel part utilize Subregion air channel structure realizes on the other hand the highly reliable heat dissipation of low cost of power section core semiconductor device puts reactor It is placed in core radiating area rear class, improves air-flow cooling efficiency.Based on this, whole cabinet includes two independent heat-dissipating cavities, core Radiating area I is to strengthen heat loss through convection, and as depicted in figs. 1 and 2, this part has air to contact with the external world, from top to bottom includes ceiling Air inlet structure I -1, inverter module radiator air passage I -2, I -3 three, reactor air duct part；Another part is isolated heat radiation Area II, this part of devices are arranged in an airtight cavity, are carried using the difference in air temperature of inside and outside cavity, inner air Heat is conducted by the aluminium film of heat exchange device for air to extraneous heat sink, isolated heat radiation function of the realization to dust sensitive kinds device Energy.For core radiating area I using the ceiling air inlet of high protection, cabinet is interior to keep operation under positive pressure state, power module radiator 1-5 and electricity Anti- device 1-6 is located in inverter module radiator air passage I -2 and reactor air duct I -3, is in dust-proof working mode；Isolation Using the air heat exchange principle of the inside and outside heat transfer of cabinet not mass transfer, mass exchange does not occur formula radiating area II for inner air and outer air component, Hot transmitting is only carried out by the cabinet body inner air and outer air temperature difference, dust seal is under the adverse circumstances such as salt fog, high humidity, rainwater in protection cabinets Reliability service.

As described above, a kind of high-power outdoor radiating cabinet structure of the utility model, including it is core radiating area I, isolated Radiating area II, as shown in figure 4, using power module air-duct clapboard 3-1 and reactor air-duct clapboard 3-2 by two sink zones into Row is isolated, and the inlet air flow path in two kinds of sink zones is mutually indepedent, is independent of each other.Core radiating area I is located among cabinet Part, upper part are a ceiling air inlet structure I -1, are made of Air Filter 1-1 and labyrinth baffle 1-2 two parts, its underpart one Duan Shuzhi air channel structure, the upper end in vertical air duct are provided with centrifugal blower 1-3, and centrifugal blower 1-3 uses outlet air under upper air inlet Axial air-out mode, close to centrifugal blower 1-3 below be equipped with a honeycomb screen 1-4 at exhaust air flue, be function immediately below honeycomb screen 1-4 Rate module heat radiator 1-5, heat radiator fin are vertical direction, are dissipated as shown in figure 5, radiator only has finless parts positioned at core Inside hot-zone I, power module 1-11 is in inside isolated heat radiation area II, is reactance immediately below power module radiator 1-5 Device 1-6, is installed on cabinet base, is equipped with " returning " shape orifice plate 1-7, the bottom reactor 1-6 peace on the periphery reactor 1-6 Protective net 1-8 is protected equipped with outlet air, pedestal front and back sides are equipped with air exhausting grille 1-9.

As shown in Figure 1, shown in Figure 5, the isolated heat radiation area II includes former and later two cavitys of cabinet and shown in Fig. 9 whole Flow the upper left return zone 5-1 of the air duct two sides of grid 1-4 and the non-wing of upper right return zone 5-3, power module radiator region The lower-left return air of the front and back cavity ventilation air duct part of return zone 5-5 and reactor two sides among the power module of piece air passage portion Area 5-2 and bottom right return zone 5-4.As shown in figure 3, interior of equipment cabinet isolated heat radiation area and atmospheric environment are completely isolated, Cabinet Rear Door wall built-up installs an air heat exchanger 2-1, as shown in figure 8, interior of equipment cabinet where air heat exchanger 2-1 is equipped with Air outlet and return air inlet, air outlet are located at isolated heat radiation area rear chamber middle position, and return air inlet is located at isolated heat radiation area Upper space, and between the interior recycling air and return air inlet of air heat exchanger 2-1 be equipped with a " u "-shaped air duct front baffle 2-3, Ac filter capacitor 2-2 is installed, A.C. contactor 2-4 and AC circuit breaker are placed in lower section above the front baffle 2-3 of " u "-shaped air duct 2-5, the front cavity lower inside in isolated heat radiation area are placed with dc circuit breaker 2-6, and the front of power module radiator 1-5 is tight Adjacent isolated heat radiation area is placed with bus capacitor 2-7, is equipped with deflector 2-8 between cabinet door on front side of bus capacitor 2-7.

The core radiating area I includes ceiling air inlet structure I -1, inverter module heat dissipation wind channel I -2 and reactor air duct I -3, as shown in fig. 6, wherein ceiling air inlet structure I -1 uses lower air inlet mode, air inlet uses composite filtering equipment, including Dual steel wire embeds dust-proof cotton or Air Filter 1-1 etc., and built-in dual labyrinth baffle 1-2 has both water-proof function；Core radiating area Vertical section air duct, centrifugal blower 1-3 air outlet to the upper surface power module radiator 1-5 air inlet distance be one times of impeller Diameter, the distance of centrifugal blower 1-3 air inlet to ceiling are at least 0.5 times of impeller diameter；Core radiating area integral air duct at I-shaped, centrifugal blower 1-3 are located at vertical air duct top immediately below ceiling, power module radiator below centrifugal blower 1-3 It is equipped with honeycomb screen 4 above 1-5, is mainly used for flowing the intermediate heat sink in region immediately below blower motor, centrifugal blower air blast Motor leeward side will form gas flowing blind area in radiation processes, this honeycomb screen 1-4 is intended to that impeller periphery will be distributed in originally Air-flow changes local air flow flow direction by honeycomb screen air duct, to adjust the air flow rate below blower in three radiator air passages Distribution, specific implementation need by the blade pitgh of honeycomb screen, width of blade, blade angle, blade high and low position and Left-right position carries out CFD simulation optimization means, finally ensures that the air quantity in the air duct of three phase power module heat radiator is almost the same, from And solve the problems, such as each phase module not samming, it is preferable that as shown in Figure 10, the honeycomb screen outline drawing that the utility model uses is whole Stream grid are made of left and right two parts, central symmetry, each three pieces of gate leaf or so, and 45 degree of blade angle, single blade width 90mm, arranges spacing 50mm, and mounting height is located at the centre of centrifugal blower 1-3 and power module radiator 1-5 air inlet distance At height；As shown in figure 5, the air duct of power module radiator, that is, inverter module heat dissipation wind channel I -2 generallys use equidistant cloth Office, should at least cover three phase power module heat radiator air duct all around using the hydraulic diameter of the centrifugal blower of axial outlet air The Edge Distance of two dimensions, meanwhile, as shown in fig. 7, reactor 1-6 is located at below power module radiator 1-5, it is preferable that The line package location of reactor 1-6 should be corresponded with the air duct of three phase power module heat radiator, to guarantee reactor triple line Packet Homogeneouslly-radiating；On the other hand, since the width of reactor herein is generally less than the width dimensions in vertical section air duct, lead to when necessary " returning " shape orifice plate 1-7 is often added, realizes that heat dissipation effect is strengthened in the air-flow throttling in reactor air duct I -3, to guarantee outlet air as far as possible Unobstructed, the design of reactor bottom has steel wire protective net, and side is all made of the steel wire protective net of percent opening 80% before and after the pedestal of cabinet. As shown in Figure 6, Figure 7, the air-flow direction of core radiating area is as follows: cooling air enters cabinet by side before and after cabinet ceiling, Successively pass through dust-proof cotton or Air Filter 1-1, the labyrinth baffle 1-2 of front and back, into after centrifugal blower 1-3, in a manner of positive pressure air blast Forced air cooling is carried out to three phase power module heat radiator 1-5, reactor 1-6, reactor 1-6 bottom outlet air is using cabinet base Equably from outlet air before and after the bottom of I-shaped air duct.

It is airtight cavity inside the isolated heat radiation area, is divided into two device mounting areas of front and back cavity, internal gas Flow loop direction as shown in figure 9, cooling air-flow through the two sides reactor 1-6 air duct lower-left return zone 5-2 and bottom right return zone 5-4 by Upper left return zone 5-1 and upper right return zone 5-2 and power of the cabinet backside flow to front cavity, then the air duct rectified grid 1-4 two sides The intermediate return zone 5-5 of the non-fin air passage portion of the region module heat radiator 1-5 is by flowing to rear chamber top on front side of cabinet In be recycled back to air port.As shown in figure 8, the interior of air heat exchanger 2-1 recycles the ac contactor that air port is located at backside volume Device 2-4 and the top AC circuit breaker 2-5, cold wind circulation successively pass through A.C. contactor 2-4 and AC circuit breaker 2-5 and its copper Row is having lower return air circulation canal by design at left and right sides of reactor 1-6 as shown in Figure 9, is flowing through the direct current interruption of front cavity Device 2-6, then by the cooling bus capacitor 2-7 of deflector 2-8 airflow contraction, finally by upper at left and right sides of honeycomb screen 1-4 Return air channel, into heat exchanger in be recycled back to air port.The interior circulation air duct structure is characterized in that, the air outlet of interior circulation with One " u "-shaped air duct front baffle 2-3 is set between air inlet, guarantee the path of cooling cycle cover as far as possible cooling in need Component, to guarantee preferable cooling effect, generally using air return method in lower air draft, outer circulation generally uses opposite interior circulation Air-flow direction is i.e. lower to enter the wind upper air draft, to realize counterflow heat exchange inside and outside cabinet.

Claims (6)

1. a kind of high-power outdoor radiating cabinet structure, it is characterised in that: including two independent heat-dissipating cavities, core radiating area (I) and isolation radiating area (II), the core radiating area (I) and isolation radiating area (II) pass through power module air-duct clapboard (3- 1) it is isolated with reactor air-duct clapboard (3-2), the inlet air flow path in two kinds of sink zones is mutually indepedent, mutually not shadow It rings；

The core radiating area (I) is located at cabinet middle section, to strengthen heat loss through convection area, has air to contact with the external world, including Ceiling air inlet structure (I -1), inverter module radiator air passage (I -2) and reactor air duct (I -3) three parts；Ceiling into Wind structure (I -1) lower part is one section of vertical air channel structure, and the upper end in vertical air duct is provided with centrifugal blower (1-3), centrifugal blower (1-3) uses the axial air-out mode of outlet air under upper air inlet, close to exhaust air flue below centrifugal blower (1-3) at be equipped with a rectification Grid (1-4), honeycomb screen (1-4) underface are power module radiator (1-5), and heat radiator fin is vertical direction, radiator Only finless parts are located at core radiating area (I) inside, and power module (1-11) is in isolated heat radiation area (II) inside, function It is reactor (1-6) that reactor (1-6) is installed on cabinet base immediately below rate module heat radiator (1-5)；

The isolated heat radiation area (II) is arranged in an airtight cavity, including former and later two cavitys of cabinet and honeycomb screen The upper left return zone (5-1) and upper right return zone (5-3) of the air duct two sides of (1-4), the region power module radiator (1-5) Non- fin air passage portion power module among the two sides return zone (5-5) and reactor (1-6) front and back cavity divulge information wind The lower-left return zone (5-2) and bottom right return zone (5-4) of road part；Isolated heat radiation area and atmospheric environment are completely isolated, Air heat exchanger (2-1) is installed in cabinet Rear Door, interior of equipment cabinet where air heat exchanger (2-1) is equipped with air outlet and returns Air port, air outlet are located at isolated heat radiation area rear chamber middle position, and return air inlet is located at the upper space in isolated heat radiation area, And " u "-shaped air duct front baffle (2-3), " u "-shaped air duct are equipped between the interior recycling air and return air inlet of air heat exchanger (2-1) It is equipped with ac filter capacitor (2-2) above front baffle (2-3), A.C. contactor (2-4) and AC circuit breaker (2- are placed in lower section 5), the front cavity lower inside in isolated heat radiation area is placed with dc circuit breaker (2-6), before power module radiator (1-5) Adjacent isolated heat radiation area, side is placed with bus capacitor (2-7), is equipped with water conservancy diversion between cabinet door on front side of bus capacitor (2-7) Plate (2-8).

2. the high-power outdoor radiating cabinet structure of one kind according to claim 1, it is characterised in that: the core radiating area (I) power module radiator (1-5) in only has power module radiator finless parts and contacts with ambient atmosphere, is connected to heat dissipation Module and control veneer on device etc. are in isolated heat radiation area, realize the high protection heat sinking function of the low cost of power module.

3. the high-power outdoor radiating cabinet structure of one kind according to claim 1, it is characterised in that: the core radiating area (I) centrifugal blower (1-3) is placed below ceiling air inlet structure (I -1) using axial air-out mode, outlet air end face and power mould Module radiator (1-5) air inlet distance is one impeller diameter of honeycomb screen, and is increased in centrifugal blower axial direction exhaust air flue whole It flows grid (1-4).

4. the high-power outdoor radiating cabinet structure of one kind according to claim 1, it is characterised in that: the ceiling air inlet knot Structure (I -1) built-in dual labyrinth avoids rainwater from directly impacting air inlet facade using lower air intake passage, and air inlet upper surface attaches anti- Dirt cotton or Air Filter (1-1), ceiling air inlet structure (I -1) is interior to be arranged labyrinth baffle (1-2).

5. the high-power outdoor radiating cabinet structure of one kind according to claim 1, it is characterised in that: the reactor (1- 6) periphery is equipped with " returning " shape orifice plate (1-7), and the bottom reactor (1-6) is equipped with outlet air protection protective net (1-8), side before and after pedestal Face is equipped with air exhausting grille (1-9).

6. the high-power outdoor radiating cabinet structure of one kind according to claim 1, it is characterised in that: the honeycomb screen (1- 4) each three pieces blade in left and right, arranges spacing 50mm by 45 degree of blade angle, single blade width 90mm, and mounting height is located at centrifugation wind At machine (1-3) and the intermediate altitude of power module radiator (1-5) air inlet distance.