CN116997168B

CN116997168B - Converter ventilation structure and working method thereof

Info

Publication number: CN116997168B
Application number: CN202311258483.0A
Authority: CN
Inventors: 查宏胜; 裴鹏鹏; 祁富俊
Original assignee: Suzhou Junhao Electric Power Co ltd
Current assignee: Suzhou Junhao Electric Power Co ltd
Priority date: 2023-09-27
Filing date: 2023-09-27
Publication date: 2023-12-29
Anticipated expiration: 2043-09-27
Also published as: CN116997168A

Abstract

The invention provides a ventilation structure of a converter and a working method thereof, belonging to the technical field of industrial production; including detachable connection's drain pan and face guard, install dc-to-ac converter body and control panel in the drain pan, the control panel is located the below of dc-to-ac converter body, one side of drain pan has been seted up and has been run through the first through-hole of drain pan. According to the invention, through arranging the air blowing component and adopting a positive air blowing mode, the air flow flowing through the inverter body is prevented from being blocked by the electronic components around the electronic components with large heat productivity, and through the size design of the air outlet, the electronic components on the inverter body can be contacted with the heat dissipation air flow entering the bottom shell at the first time, so that the heat dissipation effect of the electronic components with large heat productivity on the inverter body is effectively improved, the generation of high temperature at the gap position between the adjacent electronic components with large heat productivity is avoided, the continuous working time of the heat dissipation fan is prolonged, and the heat dissipation energy consumption is improved.

Description

Converter ventilation structure and working method thereof

Technical Field

The invention relates to the technical field of industrial production, in particular to a ventilation structure of a converter and a working method thereof.

Background

The types of current transformers include: rectifier (alternating current to direct current < AC/DC >), inverter (direct current to alternating current < DC/AC >), alternating current converter (alternating current converter < AC/AC >) and direct current converter (direct current Chopper), wherein, photovoltaic inverter is a converter that photovoltaic industry often used, in the prior art, in order to solve when photovoltaic inverter's temperature is too high, direct current boost circuit has been cut off directly, lead to photovoltaic inverter unable to continue to supply power to the load, the condition that the load faces the outage suddenly, chinese patent publication No. CN218006879U discloses a photovoltaic inverter, have when photovoltaic inverter body's temperature reaches preset numerical value, strengthen the radiating effect through opening radiator fan and apopore for photovoltaic inverter body continues to operate as the load power supply, improve the effect that the user used experience was felt.

The device is realized that the fan is started to dissipate heat when the temperature of the converter body reaches a preset value, the photovoltaic inverter body is guaranteed to continue to operate to supply power for a load, but the mode that the air flow is directly blown into the shell through the cooling fan to dissipate heat of the photovoltaic inverter body and flows out of the shell through the air outlet is not used for effectively guiding the air flow, and the transformer module forming unit can shield one sides of the transformer module forming unit, which are close to each other, because the height is higher, the air flow cannot effectively flow through the gap to cool, so that the gap position is easy to generate high temperature, the continuous working time of the cooling fan is prolonged, and the heat dissipation energy consumption is improved.

Disclosure of Invention

The invention aims to solve the technical problems that the ventilation structure of the converter and the working method thereof are provided to solve the problems that the existing photovoltaic inverter directly blows air flow into a shell through a cooling fan to cool the photovoltaic inverter body and flows out of the shell through an air outlet, the air flow is not effectively guided, the transformer module forming units are blocked on the sides which are close to each other due to higher heights, the air flow cannot effectively flow through the gap to cool, high temperature is easy to generate at the gap position, the continuous working time of the cooling fan is prolonged, and the heat dissipation energy consumption is improved.

In order to solve the technical problems, the invention provides the following technical scheme:

the utility model provides a converter ventilation structure, includes drain pan and face guard that can dismantle the connection, install dc-to-ac converter body and control panel in the drain pan, the control panel is located the below of dc-to-ac converter body, one side of drain pan is seted up and is run through the first through-hole of drain pan, the drain pan is seted up the position department of first through-hole installs and blows the radiating air current along perpendicular with the dc-to-ac converter body openly to the blast part of dc-to-ac converter body; the air blowing component comprises a first fan which is detachably connected with the first through hole, a first air pipe which extends to the back of the mask is detachably connected with the first fan, one end, away from the first fan, of the first air pipe is fixedly connected with a first air box, the first air box is fixedly connected with the back of the mask, one side, away from the mask, of the first air box is provided with a plurality of air outlets which extend along the length direction of the bottom shell, the length of each air outlet is larger than the maximum width of the inverter body, and the distance between two air outlets which are close to the end parts on two opposite sides of the first air box is larger than the maximum length of the inverter body; the utility model discloses a motor vehicle inverter, including drain pan, air guide plate, control panel, air guide plate, dc-to-ac converter body, the both sides inner wall of drain pan can be dismantled and be connected with the aviation baffle, a plurality of edges are seted up on the aviation baffle the first wind gap that extends of drain pan width direction, the aviation baffle is kept away from one side fixedly connected with a plurality of edges that extend of drain pan width direction of dc-to-ac converter body first wind guide strip, a side that the wind guide strip was kept away from the aviation baffle is inclined the front of control panel extends.

Preferably, the bottom of the bottom shell is provided with a plurality of first air holes penetrating through the bottom shell; the temperature sensor is used for detecting temperature data of the inverter body and the control panel, and the control unit is used for controlling the first fan to rotate, the temperature sensor is electrically connected with the control unit, and the control unit is electrically connected with the first fan.

Preferably, a second through hole is formed in the opposite side of the bottom shell, where the first through hole is formed, and an air draft component for exhausting air to the outside of the bottom shell is further installed in the bottom shell; the air draft component comprises a second fan which is detachably connected to the second through hole, the second fan is electrically connected with the control unit, a second air pipe which extends to the back inner wall of the bottom shell is detachably connected to the second fan, one end, away from the second fan, of the second air pipe is fixedly connected with a second air box, the second air box is detachably connected to the back inner wall of the bottom shell, a heat conduction pad is arranged between the second air box and the back inner wall of the bottom shell, a plurality of air guide pipes which penetrate through the second air box and are communicated with the inside of the second air box are detachably connected to the second air box, a plurality of air draft openings which penetrate through the air guide pipes are formed in the length direction of the bottom shell, the axes of the air draft openings are parallel to the width direction of the bottom shell, and the air guide pipes are made of insulating materials; the inverter body is detachably connected to the second bellows, an insulating heat conduction pad is arranged between the inverter body and the second bellows, and a transformer module and a power module are arranged on the inverter body.

Preferably, the power module comprises a power unit and a plurality of second radiators which are detachably connected to the second bellows, the second radiators are in contact with the power unit, the air guide pipe is located between two adjacent transformer modules and two adjacent second radiators, the air suction opening is close to the back of the transformer modules and the back of the second radiators, and the back of the bottom shell is fixedly connected with a first passive radiator.

Preferably, the front of the air guide pipe is symmetrically provided with two inclined planes.

Preferably, the cross section of guide duct is L shape, a plurality of with guide duct quantity looks adaptation's intercommunicating pore has been seted up to the front bottom of second bellows, the minor face tip fixedly connected with limiting plate of guide duct, the limiting plate pass through the bolt with second bellows fixed connection, the limiting plate keep away from one end fixedly connected with of guide duct with the connecting pipe of intercommunicating pore looks adaptation, the bottom of connecting pipe is sealed, be provided with multiunit fin in the second bellows, every group the fin all includes a plurality of the fin, fin and front and back respectively with the front inner wall and the back inner wall connection of second bellows, a plurality of the fin all is located transformer module with the projection range of power module's back, a plurality of the fin is close to the one end of second bellows bottom is to the centre bending extension of intercommunicating pore, two adjacent one side constitution independence wind channel that is close to each other, one side of fin is provided with a plurality of independent wind channel looks adaptation's second wind-guiding piece, every group the fin is located the second wind guiding piece is close to the second wind guiding piece, the side that is used for two wind guiding piece is close to the air duct that the projection position is located in the connecting pipe the side, the guide duct is located the side of two wind guiding piece.

Preferably, the bottom inner wall of the bottom shell is fixedly connected with a plurality of parallel second air guide strips, and one end, far away from the bottom of the bottom shell, of each second air guide strip is inclined to extend towards the front of the control panel.

Preferably, the connection position of the first air pipe and the first air box is located in the middle of the bottom side of the first air box, the connection position of the second air pipe and the second air box is located in the middle of the top side of the second air box, and a plurality of air guide pipes are symmetrically arranged on the second air box relative to the center of the second air box.

Preferably, a limit groove matched with a temperature sensor probe is formed in the back of one end, far away from the limit plate, of the air guide pipe, and the detection surface of the temperature sensor probe is contacted with the second air box.

Preferably, the first bellows is connected with the induced air board in a detachable way, a plurality of with the first air-out groove of air outlet looks adaptation has been seted up to the bottom of induced air board, first air-out groove be close to the one end of first tuber pipe all set up with the second wind gap that first air-out groove is linked together, the second wind gap is the funnel mouth that both ends big waist is little, the second wind gap is kept away from the one end of first air-out groove runs through the induced air board.

A working method of a converter ventilation structure, which is applied, comprises the following steps:

s1: when the temperature sensor detects that the temperature of the inverter body or the control panel is too high, the control unit controls the first fan to rotate, the first fan vertically conveys external air to the front surface of the inverter body through the first air pipe, the first air box and the air outlet, and along with the continuous operation of the first fan, the heat dissipation air flow passes through the first air outlet and obliquely flows to the front surface of the control panel under the guidance of the first air guide strip, and finally flows to the outside through the first air hole;

s2: after the air blowing component enters a working state for a certain time, if the temperature sensor monitors that the temperature on the inverter body is not effectively controlled, the control unit controls the air exhausting component to work, the air exhausting component rotates through the second fan, heat dissipation air flow entering the bottom shell is rapidly guided to the outside of the bottom shell through the air exhausting opening, the air guide pipe, the second air box and the second air pipe, and meanwhile, under the suction effect generated by the working of the second fan, external air can enter the bottom shell through the first air hole, and the air flow entering the bottom shell passes through the control board through blowing and is guided through the first air guide strip to contact with the inverter body through the first air opening;

S3: in the working process of the air draft component, the air flow guided to the outside of the bottom shell through the air draft port, the air guide pipe, the second air box and the second air pipe can drive the heat of the cavity inside the second air box to cool the second air box, and the air flow contacted with the inverter body can flow through one side, close to each other, of the power module and the transformer module along the width direction of the bottom shell and flow through the side surfaces of other electronic components along the way under the suction effect of the air draft port.

Compared with the prior art, the invention has at least the following beneficial effects:

in the above-mentioned scheme, through setting up the part of blowing, through the mode of openly blowing, avoided the air current on the flowing through inverter body to be sheltered from by the electronic components around the electronic components that calorific capacity is big, and through the size design of air outlet, ensured that the electronic components homoenergetic on the inverter body first time contacts with the radiating airflow that gets into in the drain pan, the effectual radiating effect that improves the electronic components that calorific capacity is big on the inverter body, the gap position department between the electronic components that calorific capacity is big that avoids adjacent produces high temperature, increase radiator fan's duration, improve the heat dissipation energy consumption.

Through setting up blast element and updraft ventilator, after blast element gets into operating condition for a certain time, if temperature sensor monitors that the temperature on the dc-to-ac converter body is not by effective control, control unit control updraft ventilator work, updraft ventilator rotates through the second fan, heat dissipation air current in the drain pan will get into outside the drain pan through induced draft opening, the guide duct, second bellows and second tuber pipe, with the flow of the gaseous in the drain pan of accelerating, simultaneously under the suction effect that the second fan work produced, outside air still can get into in the drain pan through first wind hole, thereby improve the intake in the drain pan, the air current in the entering drain pan passes first wind gap and dc-to-ac converter body contact through blowing through the control panel and leading through first wind-guiding strip, and then improve the radiating effect of electronic components on the dc-to-ac converter body.

Through setting up updraft ventilator, through exhaust port, the air duct, second bellows and second tuber pipe guide to the outside air current of drain pan still can drive the heat of the inside cavity of second bellows, cool down to second bellows, thereby improve the radiating effect to power module through second bellows and second radiator, position setting through the exhaust port, make the air current that contacts with the dc-to-ac converter body can flow through the power module along the width direction of drain pan and be close to each other with the transformer module under the suction effect of exhaust port, and the side of other electronic components along the way, improve the radiating effect to each electronic components side on the dc-to-ac converter body, further improved the radiating efficiency of dc-to-ac converter body.

Under the condition that the second fan does not work, the airflow vertical to the front face of the inverter body can move at two sides of the air guide pipe under the split flow of the inclined plane, the flow speed of the radiating airflow on the surface of the inverter body along the width direction of the bottom shell is improved, the radiating effect of the transformer module and the power module is further guaranteed, under the condition that the second fan works, the airflow vertical to the air guide pipe is accelerated to be guided to the position of the exhaust port quickly, the airflow speed of the adjacent electronic components of the transformer module and the power module at one side close to each other is improved, and the radiating efficiency of the transformer module and the power module is guaranteed.

Through setting up guide duct and fin, when the air current is discharged to the second bellows through exhaust vent, guide duct and connecting pipe, under the guide of second air-out groove and fin, the air current can be through transformer module and power module's projection position department on the second bellows, simultaneously, through sealing the independent wind channel that one side that is located adjacent two fins that the guide duct back projection is in the scope is close to each other and constitutes, improved air current flow path and accuracy, increased the utilization ratio of radiating air current, improved the cooling efficiency of second bellows installation transformer module and power module position department, increase the radiating effect of second bellows to transformer module and power module.

Through setting up the second wind gap, after the first bellows of air current first tuber pipe entering of gas flow, can get into first air-out groove and discharge through first air-out groove and air outlet through the second wind gap, through the shape design of second wind gap, under venturi effect's effect, increase through first air-out groove and air outlet exhaust gas velocity of flow, further improve the radiating effect to transformer module and power module.

Drawings

The accompanying drawings, which are incorporated herein and form a part of the specification, illustrate embodiments of the present disclosure and, together with the description, further serve to explain the principles of the disclosure and to enable a person skilled in the pertinent art to make and use the disclosure.

Fig. 1 is a schematic diagram of a three-dimensional structure of a current transformer;

fig. 2 is a schematic perspective view of a ventilation structure of the converter;

fig. 3 is a schematic view of a perspective view of the ventilation structure of the current transformer with the blower removed;

fig. 4 is a schematic view of a perspective view of the ventilation structure of the converter with the blower removed;

FIG. 5 is a schematic view of a three-dimensional enlarged structure of an exhaust component with part of the air guide pipe removed;

fig. 6 is a partially cut-away perspective enlarged schematic structural view of a blower unit;

FIG. 7 is a schematic view of a first perspective three-dimensional enlarged structure of an air guide pipe;

FIG. 8 is a schematic view of a second perspective enlarged structure of an air guide pipe;

FIG. 9 is a partially cut-away enlarged schematic view of a second bellows.

[ reference numerals ]

1. A bottom case; 2. a face mask; 3. a blowing part; 4. an air exhausting component; 5. a first passive heat sink; 6. a first air duct; 7. a first bellows; 8. an air outlet; 9. a second air duct; 10. a second bellows; 11. an air guide pipe; 12. a limit groove; 13. a limiting plate; 14. an air suction port; 15. an inclined plane; 16. an air deflector; 17. a first tuyere; 18. the first air guide strip; 19. a first wind hole; 20. the second air guide strip; 21. an inverter body; 22. a transformer module; 23. a power module; 24. a control board; 25. a communication hole; 26. an air guiding plate; 27. the first air outlet groove; 28. a second tuyere; 29. a connecting pipe; 30. the second air outlet groove; 31. a drainage block; 32. a heat sink.

While particular structures and devices are shown in the drawings to enable a clear implementation of embodiments of the invention, this is for illustrative purposes only and is not intended to limit the invention to the particular structures, devices and environments, which may be modified or adapted by those of ordinary skill in the art, as desired, and which remain within the scope of the appended claims.

Detailed Description

The invention provides a ventilation structure of a converter and a working method thereof, and the ventilation structure of the converter and the working method thereof are described in detail below with reference to the accompanying drawings and specific embodiments. While the invention has been described herein in terms of the preferred and preferred embodiments, the following embodiments are intended to be more illustrative, and may be implemented in many alternative ways as will occur to those of skill in the art; and the accompanying drawings are only for the purpose of describing the embodiments more specifically and are not intended to limit the invention specifically.

It should be noted that references in the specification to "one embodiment," "an example embodiment," "some embodiments," etc., indicate that the embodiment described may include a particular feature, structure, or characteristic, but every embodiment may not necessarily include the particular feature, structure, or characteristic. Further, when a particular feature, structure, or characteristic is described in connection with an embodiment, it is submitted that it is within the knowledge of one skilled in the relevant art to effect such feature, structure, or characteristic in connection with other embodiments whether or not explicitly described.

Generally, the terminology may be understood, at least in part, from the use of context. For example, the term "one or more" as used herein may be used to describe any feature, structure, or characteristic in a singular sense, or may be used to describe a combination of features, structures, or characteristics in a plural sense, depending at least in part on the context. In addition, the term "based on" may be understood as not necessarily intended to convey an exclusive set of factors, but may instead, depending at least in part on the context, allow for other factors that are not necessarily explicitly described.

It will be understood that the meanings of "on … …", "over … …" and "over … …" in this disclosure should be interpreted in the broadest sense so that "on … …" means not only "directly on" but also includes meaning "directly on" something with intervening features or layers therebetween, and "over … …" or "over … …" means not only "on" or "over" something, but also may include its meaning "on" or "over" something without intervening features or layers therebetween.

Furthermore, spatially relative terms such as "under …," "under …," "lower," "above …," "upper," and the like may be used herein for ease of description to describe one element or feature's relationship to another element or feature as illustrated in the figures. Spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. The device may be otherwise oriented and the spatially relative descriptors used herein may similarly be interpreted accordingly.

As shown in fig. 1-4 and 6, an embodiment of the present invention provides a ventilation structure of a converter, including a bottom shell 1 and a face mask 2 which are detachably connected, wherein an inverter body 21 and a control board 24 are installed in the bottom shell 1, the control board 24 is located below the inverter body 21, a first through hole penetrating through the bottom shell 1 is formed on one side of the bottom shell 1, and a blowing component 3 for blowing heat dissipation airflow to the inverter body 21 along a direction perpendicular to the front surface of the inverter body 21 is installed at a position where the first through hole is formed in the bottom shell 1; the blowing component 3 comprises a first fan which is detachably connected to the first through hole, a first air pipe 6 which extends to the back of the face mask 2 is detachably connected to the first fan, one end of the first air pipe 6, which is far away from the first fan, is fixedly connected with a first air box 7, the first air box 7 is fixedly connected to the back of the face mask 2, one side, which is far away from the face mask 2, of the first air box 7 is provided with a plurality of air outlets 8 which extend along the length direction of the bottom shell 1, the length of each air outlet 8 is larger than the maximum width of the inverter body 21, and the distance between two air outlets 8 which are close to the two opposite side ends of the first air box 7 is larger than the maximum length of the inverter body 21; the inner walls of the two sides of the bottom shell 1 are detachably connected with air deflectors 16, a plurality of first air inlets 17 extending along the width direction of the bottom shell 1 are formed in the air deflectors 16, a plurality of first air guide strips 18 extending along the width direction of the bottom shell 1 are fixedly connected to one side of the air deflectors 16 away from the inverter body 21, and one side of the first air guide strips 18 away from the air deflectors 16 extends obliquely to the front face of the control panel 24; the bottom of the bottom shell 1 is provided with a plurality of first air holes 19 penetrating through the bottom shell 1; a temperature sensor (not shown) for detecting temperature data of the inverter body 21 and the control board 24, and a control unit (not shown) for controlling the rotation of the first fan are disposed in the bottom case 1, the temperature sensor is electrically connected with the control unit, and the control unit is electrically connected with the first fan.

Through setting up blast element 3, when detecting through temperature sensor that the temperature of dc-to-ac converter body 21 or control panel 24 is too high, the control unit control first fan rotates, first fan is with outside air current first tuber pipe 6, first bellows 7 and air outlet 8 introduce in drain pan 1, and vertically carry to the front of dc-to-ac converter body 21, along with the continuation work of first fan, the radiating air current passes first wind gap 17 and incline to the front flow of control panel 24 under the guide of first wind-guiding strip 18, realize the heat dissipation to control panel 24, finally flow through first wind hole 19 towards the external world, the benefit that sets up like this is, the air current that carries to in the drain pan 1 can be preferentially dispelled the heat to the electronic components that calorific capacity is big on the dc-to-ac converter body 21, and through the mode on having avoided the air current that flows through on the dc-to-ac converter body 21 by the electronic components around big, and through the size design of air outlet 8, the electronic components homoenergetic first time and the radiating air current contact in entering drain pan 1, the radiating air current contact on the basis of the electronic components that has ensured on the dc-to-ac converter body 21, the effect is also improved the radiating effect that the adjacent air current through the heat dissipation gap that the electronic components that the thermal capacity is big on the control panel is high-level is avoided on the adjacent to the control panel 24, the adjacent air current to be blown through the control panel's side, the effect that the heat dissipation effect that can be increased, the heat dissipation effect on the adjacent control panel 24 is avoided on the heat dissipation effect that the air fan to be increased, and the time on the adjacent air fan.

As shown in fig. 1-5, 7 and 8, a first passive radiator 5 is fixedly connected to the back of the bottom shell 1, the passive radiating effect of the bottom shell 1 and the second bellows 10 is improved by arranging the first passive radiator 5, the radiating energy consumption is reduced, a second through hole is formed on the opposite side of the bottom shell 1, where the first through hole is formed, and an air draft component 4 for exhausting air to the outside of the bottom shell 1 is also arranged in the bottom shell 1; the exhaust component 4 comprises a second fan which is detachably connected to the second through hole, the second fan is electrically connected with the control unit, a second air pipe 9 which extends to the inner wall of the back of the bottom shell 1 is detachably connected to the second fan, one end, far away from the second fan, of the second air pipe 9 is fixedly connected with a second air box 10, the second air box 10 is detachably connected to the inner wall of the back of the bottom shell 1, a heat conducting pad is arranged between the second air box 10 and the inner wall of the back of the bottom shell 1, a plurality of air guide pipes 11 which penetrate through the second air box 10 and are communicated with the inside of the second air box 10 are detachably connected to the second air box 10, a plurality of exhaust openings 14 which penetrate through the air guide pipes 11 are formed in the air guide pipes 11 along the length direction of the bottom shell 1, the axis of the exhaust openings 14 is parallel to the width direction of the bottom shell 1, and the air guide pipes 11 are made of insulating materials; the inverter body 21 is detachably connected to the second bellows 10, an insulating heat conduction pad is arranged between the inverter body 21 and the second bellows 10, and a transformer module 22 and a power module 23 are arranged on the inverter body 21.

Through setting up blast element 3 and updraft ventilator 4, after blast element 3 gets into operating condition for a certain time, if temperature sensor monitors that the temperature on the dc-to-ac converter body 21 is not by effective control, control unit control updraft ventilator 4 work, updraft ventilator 4 rotates through the second fan, will get into the heat dissipation air current in the drain pan 1 through induced draft opening 14, guide duct 11, second bellows 10 and second tuber pipe 9 quick guide to the drain pan 1 outside, with the flow of accelerating the gas in the drain pan 1, simultaneously under the suction effect that the second fan work produced, outside air still can get into in the drain pan 1 through first wind hole 19, thereby improve the intake in the drain pan 1, the air current that gets into in the drain pan 1 is through blowing through control panel 24 and leading through first wind gap 17 and dc-to-ac converter body 21 contact through first wind guiding strip 18, and then improve the radiating effect of electronic components on the dc-to-ac converter body 21.

As shown in fig. 3 and 8, the power module 23 includes a power unit and a plurality of second heat sinks detachably connected to the second bellows 10, the second heat sinks are in contact with the power unit, the air guide pipe 11 is located between two adjacent transformer modules 22 and two adjacent second heat sinks, and the air suction opening 14 is close to the backs of the transformer modules 22 and the second heat sinks.

Through setting up updraft ventilator 4, through updraft ventilator 14, guide duct 11, second bellows 10 and second tuber pipe 9 guide to the outside air current of drain pan 1 still can take away the heat of the inside cavity of second bellows 10, cool down second bellows 10, thereby improve the radiating effect to power unit through second bellows 10 and second radiator, position setting through updraft ventilator 14, make the air current that contacts with inverter body 21 can flow through the power unit along the width direction of drain pan 1 and the one side that transformer module 22 is close to each other under the suction effect of updraft ventilator 14, and the side of other electronic components along the way, improve the radiating effect to each electronic components side on the inverter body 21, further improved the radiating efficiency of inverter body 21.

As shown in fig. 3, fig. 5 and fig. 8, two inclined planes 15 are symmetrically arranged on the front side of the air guide pipe 11, the air flow vertically flowing to the front side of the inverter body 21 can quickly move to two sides of the air guide pipe 11 under the split flow of the inclined planes 15 by arranging the inclined planes 15 under the condition that the second fan does not work, the flow speed of the heat dissipation air flow on the surface of the inverter body 21 along the width direction of the bottom shell 1 is improved, the heat dissipation effect of the transformer module 22 and the power module 23 is further ensured, under the condition that the second fan works, the air flow on the front side of the air guide pipe 11 is accelerated to be quickly guided to the position of the air suction opening 14, the air flow speed of the adjacent electronic components of the transformer module 22 and the power module 23 at one side close to each other is improved, and the heat dissipation efficiency of the transformer module 22 and the power module 23 is ensured.

As shown in fig. 5, 7, 8 and 9, the cross section of the air guide pipe 11 is L-shaped, the front bottom of the second air box 10 is provided with a plurality of communication holes 25 which are matched with the number of the air guide pipes 11, the short side end part of the air guide pipe 11 is fixedly connected with a limiting plate 13, the limiting plate 13 is fixedly connected with the second air box 10 through bolts, one end of the limiting plate 13, which is far away from the air guide pipe 11, is fixedly connected with a connecting pipe 29 which is matched with the communication holes 25, the bottom of the connecting pipe 29 is closed, the installation of the inverter body 21 can be prevented from being blocked by sequentially installing the second air box 10, the inverter body 21 and the air guide pipe 11, the installation convenience of the inverter body 21 is ensured, a plurality of groups of cooling fins 32 are arranged in the second air box 10, each group of cooling fins 32 comprises a plurality of cooling fins 32, and the front and back surfaces are respectively connected with the front inner wall and the back inner wall of the second air box 10, the plurality of cooling fins 32 are all positioned in the projection range of the back of the transformer module 22 and the power module 23, one end of the plurality of cooling fins 32 close to the bottom of the second air box 10 is bent and extended towards the center of the communication hole 25, one side of the adjacent two connecting pipes 29 close to each other forms an independent air channel, one side of the connecting pipe 29 close to the cooling fins 32 is provided with a plurality of second air outlet grooves 30 which are matched with the independent air channels, the bottom inner wall of the connecting pipe 29 is fixedly connected with a drainage block 31, the drainage block 31 is used for rapidly guiding the air entering the connecting pipe 29 along the long side of the air guide pipe 11 to the position of the second air outlet groove 30, the turbulence generated in the connecting pipe 29 is reduced, the air flow rate flowing into the independent air channels through the connecting pipe 29 and the second air outlet grooves 30 is further improved, the heat dissipation efficiency of the second air box 10 is improved, the independent air duct formed by the adjacent two radiating fins 32 in the back projection range of the air guide pipe 11 is closed, and the closed side can be U-shaped, so that the advantage of the arrangement is that the air flow is prevented from flowing rapidly between the adjacent two radiating fins 32 in the back projection range of the air guide pipe 11, and the utilization efficiency of the radiating air flow is reduced.

Through setting up guide duct 11 and fin 32, when the air current is discharged to second bellows 10 through exhaust port 14, guide duct 11 and connecting pipe 29, under the guide of second air-out groove 30 and fin 32, the air current can be through transformer module 22 and the projection position department of power module 23 on second bellows 10, simultaneously, through sealing the independent wind channel that is located adjacent two fin 32 one side constitution that are close to each other that the projection of guide duct 11 was within range, airflow flow path and accuracy have been improved, the utilization ratio of heat dissipation air current has been increased, the cooling efficiency of second bellows 10 installation transformer module 22 and power module 23 department improves, the radiating effect of second bellows 10 to transformer module 22 and power module 23.

As shown in fig. 3 and fig. 4, the bottom inner wall of the bottom shell 1 is fixedly connected with a plurality of parallel second air guiding strips 20, and one end of the second air guiding strips 20 far away from the bottom of the bottom shell 1 is inclined to the front of the control board 24, so that the air drawn into the bottom shell 1 through the first air holes 19 can be obliquely blown to the front of the control board 24 when both the first fan and the second fan are started, the air flow flowing through the electronic components on the control board 24 is effectively reduced and shielded by adjacent electronic components, and the heat dissipation effect of the control board 24 is ensured.

As shown in fig. 2-6, the connection position of the first air duct 6 and the first air box 7 is located in the middle of the bottom side of the first air box 7, the connection position of the second air duct 9 and the second air box 10 is located in the middle of the top side of the second air box 10, and a plurality of air guide ducts 11 are symmetrically arranged on the second air box 10 with respect to the center of the second air box 10.

As shown in fig. 7, a limit groove 12 adapted to a temperature sensor probe is formed at the back of one end of the air guide pipe 11, which is far away from the limit plate 13, and the detection surface of the temperature sensor probe is contacted with the second air box 10, so that the air flow blown into the bottom shell 1 is prevented from contacting with the temperature sensor for the first time, and the accuracy of the measured data of the temperature sensor is prevented from being influenced.

As shown in fig. 6, the first wind box 7 is detachably connected with the wind guiding plate 26, the bottom of the wind guiding plate 26 is provided with a plurality of first wind outlet grooves 27 matched with the wind outlet 8, one end of the first wind outlet grooves 27 close to the first wind pipe 6 is provided with second wind outlets 28 communicated with the first wind outlet grooves 27, the second wind outlets 28 are funnel-shaped openings with large waist parts at two ends, one end of the second wind outlets 28 far away from the first wind outlet grooves 27 penetrates through the wind guiding plate 26, and the air guiding plate has the advantages that after entering the first wind box 7 through the first wind pipe 6, air enters the first wind outlet grooves 27 through the second wind outlets 28 and is discharged through the first wind outlet grooves 27 and the wind outlet 8, through the shape design of the second wind outlets 28, the air flow rate discharged through the first wind outlet grooves 27 and the wind outlet 8 is increased, and the heat dissipation effect on the transformer module 22 and the power module 23 is further improved under the action of venturi effect.

The embodiment of the invention also provides a working method of the converter ventilation structure, which comprises the following steps of:

s1: when the temperature sensor detects that the temperature of the inverter body 21 or the control panel 24 is too high, the control unit controls the first fan to rotate, the first fan vertically conveys external air to the front surface of the inverter body 21 through the first air pipe 6, the first air box 7 and the air outlet 8, and along with the continuous operation of the first fan, the heat dissipation air flows through the first air outlet 17 and obliquely flows to the front surface of the control panel 24 under the guidance of the first air guide strip 18, and finally flows to the outside through the first air hole 19;

s2: after the air blowing component 3 enters a working state for a certain time, if the temperature sensor monitors that the temperature on the inverter body 21 is not effectively controlled, the control unit controls the air blowing component 4 to work, the air blowing component 4 rotates through the second fan, the heat dissipation air flow entering the bottom shell 1 is rapidly guided to the outside of the bottom shell 1 through the air blowing port 14, the air guide pipe 11, the second air box 10 and the second air pipe 9, and meanwhile, under the suction effect generated by the second fan, the outside air can enter the bottom shell 1 through the first air holes 19, and the air flow entering the bottom shell 1 is guided to contact with the inverter body 21 through the first air guide strip 18 through the first air port 17 after being blown through the control board 24;

S3: in the working process of the air exhausting component 4, the air flow guided to the outside of the bottom shell 1 through the air exhausting port 14, the air guide pipe 11, the second air box 10 and the second air pipe 9 also drives the heat of the cavity inside the second air box 10 to cool the second air box 10, and the air flow contacted with the inverter body 21 flows through one side, close to each other, of the power module 23 and the transformer module 22 along the width direction of the bottom shell 1 and flows through the side surfaces of other electronic components along the way under the suction effect of the air exhausting port 14.

According to the technical scheme provided by the invention, through the arrangement of the air blowing component 3, when the temperature sensor detects that the temperature of the inverter body 21 or the control board 24 is too high, the control unit controls the first fan to rotate, the first fan guides external air into the bottom shell 1 through the first air pipe 6, the first air box 7 and the air outlet 8, and vertically conveys the external air to the front surface of the inverter body 21, along with the continuous operation of the first fan, the heat dissipation air flows through the first air outlet 17 and obliquely flows to the front surface of the control board 24 under the guidance of the first air guide strip 18, the heat dissipation of the control board 24 is realized, and finally, the air flow conveyed into the bottom shell 1 can preferentially dissipate the heat of the electronic components with large heat productivity on the inverter body 21, and through the front surface, the electronic components around the electronic components with large heat productivity are prevented from being blocked by the air flow on the inverter body 21, and through the size design of the air outlet 8, the electronic components on the inverter body 21 can be contacted with the air flow entering the bottom shell 1 at the first time, the heat dissipation effect is effectively improved, the heat dissipation effect of the electronic components with large heat dissipation effect of the electronic components on the inverter body 21 is effectively improved, the heat dissipation effect of the electronic components with large heat dissipation effect of the electronic components with the heat dissipation effect of the electronic components with large heat dissipation effect is prevented from being continuously increased, and the heat dissipation effect of the electronic components with the heat dissipation effect of the electronic components is reduced by the heat dissipation effect of the fan is further improved by the heat dissipation effect of the electronic components on the control board 24.

Through setting up updraft ventilator 4, through updraft ventilator 14, guide duct 11, second bellows 10 and the outside air current of second tuber pipe 9 guide to drain pan 1 still can drive the heat of the inside cavity of second bellows 10, cool down second bellows 10, thereby improve the radiating effect to power unit through second bellows 10 and second radiator, position setting through updraft ventilator 14, make the air current that contacts with inverter body 21 can flow through the power module 23 along the width direction of drain pan 1 and the one side that transformer module 22 is close to each other under the suction effect of updraft ventilator 14, and the side of other electronic components along the way improves the radiating effect to each electronic components side on the inverter body 21, further improved the radiating efficiency of inverter body 21.

Through setting up inclined plane 15 so that the positive air current of second fan under the circumstances of not working, the vertical flow direction dc-to-ac converter body 21 can be under the reposition of redundant personnel of inclined plane 15, the both sides motion of quick guide duct 11 improves the velocity of flow of inverter body 21 surface heat dissipation air current along drain pan 1 width direction, further ensure the radiating effect of transformer module 22 and power module 23, under the circumstances of second fan working, accelerate the positive air current of guide duct 11 and make it be guided to exhaust port 14 position department fast, improve the gas velocity of flow of adjacent electronic components of transformer module 22 and power module 23 and be close to one side each other, ensure the radiating efficiency of transformer module 22 and power module 23.

Through setting up the second wind gap 28, after the air current flows through first tuber pipe 6 and gets into first bellows 7, can get into first air-out groove 27 and discharge through first air-out groove 27 and air outlet 8 through the second wind gap 28, through the shape design of second wind gap 28, under the effect of venturi effect, increase through first air-out groove 27 and air outlet 8 exhaust gas velocity of flow, further improve the radiating effect to transformer module 22 and power module 23.

The invention is intended to cover any alternatives, modifications, equivalents, and variations that fall within the spirit and scope of the invention. In the above description of the preferred embodiments of the invention, specific details are set forth in order to provide a thorough understanding of the invention, and the invention will fully be understood to those skilled in the art without such details. In other instances, well-known methods, procedures, flows, components, circuits, and the like have not been described in detail so as not to unnecessarily obscure aspects of the present invention.

Those of ordinary skill in the art will appreciate that all or a portion of the steps in implementing the methods of the embodiments described above may be implemented by a program that instructs associated hardware, and the program may be stored on a computer readable storage medium, such as: ROM/RAM, magnetic disks, optical disks, etc.

The foregoing is merely a preferred embodiment of the present invention and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present invention, which are intended to be comprehended within the scope of the present invention.

Claims

1. A ventilation structure for a current transformer, comprising: the solar energy power inverter comprises a bottom shell and a face mask which are detachably connected, wherein an inverter body and a control board are installed in the bottom shell, the control board is located below the inverter body, a first through hole penetrating through the bottom shell is formed in one side of the bottom shell, and a blowing component for blowing heat dissipation air flow to the inverter body along the vertical direction and the front face of the inverter body is installed at the position of the bottom shell where the first through hole is formed;

the air blowing component comprises a first fan which is detachably connected with the first through hole, a first air pipe which extends to the back of the mask is detachably connected with the first fan, one end, away from the first fan, of the first air pipe is fixedly connected with a first air box, the first air box is fixedly connected with the back of the mask, one side, away from the mask, of the first air box is provided with a plurality of air outlets which extend along the length direction of the bottom shell, the length of each air outlet is larger than the maximum width of the inverter body, and the distance between two air outlets which are close to the end parts on two opposite sides of the first air box is larger than the maximum length of the inverter body;

The two side inner walls of the bottom shell are detachably connected with air deflectors, a plurality of first air inlets extending along the width direction of the bottom shell are formed in the air deflectors, one side, away from the inverter body, of each air deflector is fixedly connected with a plurality of first air guide strips extending along the width direction of the bottom shell, and one side, away from the air deflectors, of each first air guide strip extends obliquely to the front face of the control panel;

the bottom of the bottom shell is provided with a plurality of first air holes penetrating through the bottom shell;

the temperature sensor is used for detecting temperature data of the inverter body and the control panel, and the control unit is used for controlling the first fan to rotate, the temperature sensor is electrically connected with the control unit, and the control unit is electrically connected with the first fan.

2. The ventilation structure of the current transformer according to claim 1, wherein a second through hole is provided on the opposite side of the bottom case where the first through hole is provided, and an air suction member for sucking air to the outside of the bottom case is further installed in the bottom case;

the air draft component comprises a second fan which is detachably connected to the second through hole, the second fan is electrically connected with the control unit, a second air pipe which extends to the back inner wall of the bottom shell is detachably connected to the second fan, one end, away from the second fan, of the second air pipe is fixedly connected with a second air box, the second air box is detachably connected to the back inner wall of the bottom shell, a heat conduction pad is arranged between the second air box and the back inner wall of the bottom shell, a plurality of air guide pipes which penetrate through the second air box and are communicated with the inside of the second air box are detachably connected to the second air box, a plurality of air draft openings which penetrate through the air guide pipes are formed in the length direction of the bottom shell, the axes of the air draft openings are parallel to the width direction of the bottom shell, and the air guide pipes are made of insulating materials;

The inverter body is detachably connected to the second bellows, an insulating heat conduction pad is arranged between the inverter body and the second bellows, and a transformer module and a power module are arranged on the inverter body.

3. The ventilation structure of claim 2, wherein the power module includes a power unit and a plurality of second heat sinks detachably connected to the second bellows, the second heat sinks are in contact with the power unit, the air guide pipe is located between two adjacent transformer modules and two adjacent second heat sinks, the air suction opening is close to the back of the transformer modules and the back of the second heat sinks, and the back of the bottom shell is fixedly connected with a first passive heat sink.

4. The ventilation structure of claim 2, wherein the front surface of the air guide pipe is symmetrically provided with two inclined planes.

5. The converter ventilation structure according to claim 2, wherein the cross section of the air guide pipe is L-shaped, a plurality of communication holes matched with the number of the air guide pipes are formed in the bottom of the front face of the second air box, a limiting plate is fixedly connected to the short side end of the air guide pipe, the limiting plate is fixedly connected with the second air box through bolts, a connecting pipe matched with the communication holes is fixedly connected to one end of the limiting plate, the bottom of the connecting pipe is closed, a plurality of groups of cooling fins are arranged in the second air box, each group of cooling fins comprises a plurality of cooling fins, the front face and the back face of the cooling fins are respectively connected with the front inner wall and the back inner wall of the second air box, the cooling fins are all located in the projection range of the back of the transformer module, one end, close to the bottom of the second air box, of the adjacent cooling fins are bent towards the center of the communication holes, one side, close to each other, of the two cooling fins are formed into an independent air duct, the two side, the side, close to the connecting pipe is provided with a plurality of cooling fins, the two side of cooling fins are arranged in the projection range, and the two side guide grooves are respectively close to the two side of the air guide grooves are formed in the two side of the air guide grooves, and are connected with the two side guide grooves, and the side of the cooling fins are respectively, and the side of the two side guide grooves are respectively.

6. The ventilation structure of claim 1, wherein a plurality of second parallel air guiding strips are fixedly connected to the inner wall of the bottom shell, and one end of each second air guiding strip away from the bottom of the bottom shell is inclined to extend towards the front surface of the control panel.

7. The ventilation structure of a converter according to claim 2, wherein a connection position of the first air duct and the first air box is located in a middle portion of a bottom side of the first air box, a connection position of the second air duct and the second air box is located in a middle portion of a top side of the second air box, and a plurality of air guide ducts are symmetrically arranged on the second air box with respect to a center of the second air box.

8. The ventilation structure of claim 5, wherein a limit groove matched with a temperature sensor probe is formed in the back of one end of the air guide pipe, which is far away from the limit plate, and the detection surface of the temperature sensor probe is contacted with the second air box.

9. The converter ventilation structure of claim 1, wherein the first bellows is detachably connected with an air guiding plate, a plurality of first air outlet grooves matched with the air outlets are formed in the bottom of the air guiding plate, second air outlets communicated with the first air outlet grooves are formed in one ends, close to the first air pipes, of the first air outlet grooves, the second air outlets are funnel-shaped openings with large waist portions at two ends, and one ends, far away from the first air outlet grooves, of the second air outlets penetrate through the air guiding plate.

10. A method of operating a ventilation structure for a current transformer according to any one of claims 1-9, characterized by the steps of: