CN210579825U

CN210579825U - Solar off-grid inverter

Info

Publication number: CN210579825U
Application number: CN201921135564.0U
Authority: CN
Inventors: 陈上明
Original assignee: Xinjiang Zhongdian Kunyuan Energy Saving Technology Co Ltd
Current assignee: Xinjiang Zhongdian Kunyuan Energy Saving Technology Co Ltd
Priority date: 2019-07-19
Filing date: 2019-07-19
Publication date: 2020-05-19
Anticipated expiration: 2029-07-19

Abstract

The utility model belongs to the technical field of photovoltaic power generation, in particular to a solar off-grid inverter, which comprises an inverter shell, wherein the outer wall of the inverter shell is fixedly connected with a cooling shell, one end of the inverter shell is provided with a heat dissipation surface, the heat dissipation surface is provided with a plurality of heat dissipation holes which are uniformly distributed, and both sides of the inverter shell are fixedly connected with side heat dissipation fin groups; the utility model discloses be equipped with the cooling casing, the cooling casing is with inverter housing outer wall cladding, the coolant liquid in the cooling casing is through offside radiating fin group heat dissipation to replace the temperature of the work subassembly top in the inverter casing, the work subassembly bottom surface contacts with the heat-conducting plate, the work subassembly during operation generates heat, transmits to end radiating fin group through the heat-conducting plate, when end radiating fin group bottom and coolant liquid cooling, reduces the temperature on radiating fin group surface once more at the bottom through radiator fan, thereby makes the cooling high-efficient.

Description

Solar off-grid inverter

Technical Field

The utility model belongs to the technical field of photovoltaic power generation, concretely relates to solar energy is from net dc-to-ac converter.

Background

In an alternating current photovoltaic power generation system, an inverter is an indispensable part, and at present, for various technical or policy reasons, a short time is needed for connecting all independent photovoltaic alternating current power generation systems to a national unified power grid, so that the market divides photovoltaic inverters into two types, namely photovoltaic off-grid inverters and photovoltaic grid-connected inverters.

Because the inside contains various electrical components from the net dc-to-ac converter, and the inverter is generally heavier, if drop in handling, very easily cause from the net dc-to-ac converter to damage, and current from the net dc-to-ac converter generally does not have buffering antidetonation ability, chinese patent discloses an from net dc-to-ac converter, its publication number (CN207994940U), this patent can be through the setting of radiator fan and sponge that absorbs water, the heat dissipation of blowing is carried out by radiator fan at the work of inverter body, and accessible inlet adds cooling water or other coolant liquid to sealed shell in, the sponge absorbs the heat absorption of back to the casing with water, the radiating effect is good, but because the water storage capacity of sponge is not enough, the inner wall is too smooth, thereby lead to the heat radiating area to reduce, make the unable maximize of inside radiating effect, thereby lead to.

SUMMERY OF THE UTILITY MODEL

To solve the problems set forth in the background art described above. The utility model provides a solar energy is from net dc-to-ac converter has high-efficient cooling and simple structure's characteristics.

In order to achieve the above object, the utility model provides a following technical scheme: solar energy is from net dc-to-ac converter, including the dc-to-ac converter casing, dc-to-ac converter casing outer wall fixedly connected with cooling casing, dc-to-ac converter casing one end has the cooling surface, set up a plurality of evenly distributed's louvre on the cooling surface, the equal fixedly connected with side cooling fin group in dc-to-ac converter casing both sides, side cooling fin group link up the dc-to-ac converter casing side extremely inside the cooling casing, bottom cooling fin group fixed connection has end cooling fin group in the bottom of the internal wall of dc-to-ac converter casing bottom surface extremely inside the cooling casing, the three evenly distributed's of dc-to-ac converter casing bottom surface one end fixedly connected with radiator fan, radiator fan all with external.

Preferably, the upper end surface of the bottom radiating fin group is fixedly connected with a heat conducting plate, and the heat conducting plate is positioned above the radiating fan.

Preferably, the injection hole has been seted up to cooling casing up end, cooling casing side bottom has seted up the discharge hole, the injection hole with the discharge hole all has the screw thread, cooling casing is inside to have the coolant liquid.

Preferably, one end of the bottom radiating fin group, which is close to the radiating fan, is provided with three guide rib groups, the overlooking shape of each guide rib group is circular arc, and the guide rib groups are fixedly connected with two sides of the output end of the radiating fan.

Preferably, an exhaust plate is fixedly connected to one side of the inverter shell, the exhaust plate is located at the bottom of the radiating surface, and a dust guard is fixedly connected to one end, far away from the exhaust plate, of the outer wall of the radiating surface.

Preferably, a heat insulation part is fixedly connected between the bottom of the bottom radiating fin group and the inner wall of the cooling shell.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model discloses be equipped with the cooling casing, the cooling casing wraps the inverter casing outer wall, and the coolant liquid in the cooling casing dispels the heat through offside radiating fin group to replace the temperature above the work subassembly in the inverter casing, the work subassembly bottom surface contacts with the heat-conducting plate, and the work subassembly generates heat in the time of working, transmits to bottom radiating fin group through the heat-conducting plate, and the bottom radiating fin group bottom reduces the temperature on bottom radiating fin group surface once more through radiator fan when cooling with the coolant liquid, thereby makes the cooling high-efficient;

2. the utility model discloses mainly cool down through the fin, the fin both ends are located coolant liquid and dc-to-ac converter casing respectively, through transmitting each other between dc-to-ac converter casing temperature and the coolant liquid to cool down to the dc-to-ac converter is inside, because each structure is the mounting, single structure, thereby increased the life of dc-to-ac converter.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic top view of the present invention;

fig. 3 is a schematic side view of a partial section of the present invention.

In the figure: 1. an inverter case; 11. a heat dissipating surface; 111. heat dissipation holes; 12. a vent panel; 2. cooling the shell; 21. an injection hole; 22. a discharge hole; 23. cooling liquid; 24. a dust-proof plate; 3. a side fin set; 4. a bottom fin set; 41. a heat conducting plate; 42. a heat insulating part; 43. a guide rib group; 5. a heat dissipation fan.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides the following technical solutions: solar energy is from net dc-to-ac converter, including inverter housing 1, inverter housing 1 outer wall fixedly connected with cooling casing 2, inverter housing 1 one end has cooling surface 11, set up a plurality of evenly distributed's louvre 111 on the cooling surface 11, the equal fixedly connected with side radiating fin group 3 in inverter housing 1 both sides, side radiating fin group 3 link up inverter housing 1 side to cooling casing 2 inside, inverter housing 1 inner wall bottom surface fixed connection has end radiating fin group 4, end radiating fin group 4 link up inverter housing 1 bottom surface to cooling casing 2 inside, three evenly distributed's radiator fan 5 of inverter housing 1 bottom surface one end fixed connection, radiator fan 5 all with external power source electric connection.

In this embodiment: the inverter comprises an inverter shell 1, a cooling shell 2 is fixedly connected to the outer wall of the inverter shell 1, a cavity is formed between the cooling shell 2 and the inverter shell 1, cooling liquid 23 is arranged in the cavity, a heat radiating surface 11 is arranged at one end of the inverter shell 1, a plurality of heat radiating holes 111 are uniformly distributed on the heat radiating surface 11, the heat radiating surface 11 is positioned at the rear end of an operation surface of the inverter shell 1, the internal environment of the inverter shell 1 can be opened through the heat radiating holes 111, hot gas is prevented from being exhausted in the inverter shell 1, so that the heat radiating effect is reduced, side heat radiating fin groups 3 are fixedly connected to two sides of the inverter shell 1, the side heat radiating fins 3 mainly exchange the temperature in the inverter shell 1, the contact area of the side heat radiating fin groups 3 and the hot gas in the inverter shell 1 can be increased, so that the heat radiating effect is improved, and the side heat radiating fin groups, the internal side radiating fin group 3 is contacted with a cooling liquid 23, the side radiating fin group 3 is cooled by the cooling liquid 23, so that the radiating speed of the side radiating fin group 3 is improved, the bottom radiating fin group 4 is fixedly connected with the bottom surface of the inner wall of the inverter shell 1, the bottom radiating fin group 4 penetrates through the bottom surface of the inverter shell 1 to the inside of the cooling shell 2, one end of the bottom surface of the inverter shell 1 is fixedly connected with three radiating fans 5 which are uniformly distributed, the radiating fans 5 are electrically connected with an external power supply, because a working assembly in the inverter shell 1 stores solar power generation in a storage battery when in work and then is converted into a household voltage instrument through an inverter, an electronic element generates a large amount of heat when in work, the bottom radiating fin group 4 at the bottom can be effectively and directly contacted with a heat increasing source, so that a large amount of heat is reduced, and when the, the heat dissipation fan 5 is used for secondary heat dissipation to prevent hot air from staying on the bottom heat dissipation fin group 4 and reduce the heat dissipation effect, and the side heat dissipation fin group 3 and the bottom heat dissipation fin group 4 are made of aluminum.

Specifically, the upper end surface of the bottom radiating fin group 4 is fixedly connected with a heat conducting plate 41, and the heat conducting plate 41 is positioned above the radiating fan 5; the working assembly is fixed on the heat conducting plate 41, and the bottom radiating fin group 4 consists of a plurality of fins, so that the working assembly is inconvenient to fix, the working assembly can be effectively fixed through the heat conducting plate 41, heat generated by the working assembly can be absorbed and transferred, and the heat conducting plate 41 is made of aluminum.

Specifically, an injection hole 21 is formed in the upper end face of the cooling shell 2, a discharge hole 22 is formed in the bottom end of the side face of the cooling shell 2, the injection hole 21 and the discharge hole 22 are both provided with threads, and cooling liquid 23 is arranged inside the cooling shell 2; threaded connection has sealed lid or sealed tube on injection hole 21 and the discharge hole 22, when the frequency of use is low, can be by in the operating personnel appointed time, change coolant liquid 23, when frequently using produces the high fever, and can carry out sealing connection with outside small-size circulating pump with sealed tube, the sealed tube that is located discharge hole 22 is placed in the water tank of small-size circulating pump, makes coolant liquid 23 can circulate to carry out rapid cooling.

Specifically, one end of the bottom cooling fin group 4 close to the cooling fan 5 is provided with three guide rib groups 43, the guide rib groups 43 are arc-shaped in plan view, and the guide rib groups 43 are fixedly connected with two sides of the output end of the cooling fan 5; the guide rib group 43 includes two arc-shaped portions, each two arc-shaped portions form a closed air channel with the cooling fan 5 and the fins, so that an aggregation effect is exerted on air, the cooling effect is improved, and the model of the cooling fan 5 is AFB0912 VH.

Specifically, one side of the inverter shell 1 is fixedly connected with an exhaust plate 12, the exhaust plate 12 is positioned at the bottom of the radiating surface 11, and one end, far away from the exhaust plate 12, of the outer wall of the radiating surface 11 is fixedly connected with a dust guard 24; the exhaust plate 12 has a plurality of uniformly distributed exhaust holes through which the hot air blown by the cooling fan 5 is exhausted to the outside.

Specifically, a heat insulation part 42 is fixedly connected between the bottom of the bottom radiating fin group 4 and the inner wall of the cooling shell 2; the heat insulation part 42 separates the bottom radiating fin group 4 from the cooling shell 2, and the bottom surface of the cooling shell 2 is fixed on the installation surface, so that the cooling shell 2 is prevented from directly contacting the bottom radiating fin group 4 to conduct temperature when being influenced by external temperature, and the heat insulation part 42 is made of silica gel.

The utility model discloses a theory of operation and use flow: when the utility model is used, the working component is positioned on the upper end surface of the heat conducting plate 41, a large amount of heat is generated during working and is transmitted to the bottom radiating fin group 4 through the heat conducting plate 41 at the bottom, because the bottom radiating fin group 4 is contacted with the cooling liquid 23 in the cooling shell 2 to carry out the first temperature transmission, a large amount of temperature is taken away through the cooling liquid 23, then the radiating fan 5 is started, the radiating fan 5 is sealed by the guiding rib group 43 to form a wind channel, the temperature on the surface of the bottom radiating fin group 4 is secondarily reduced through wind power, the blown wind is discharged through the exhaust plate 12, the rest temperatures are positioned in the inverter shell 1 and are replaced through the side radiating fin group 3, thereby the temperature in the inverter shell 1 is reduced, because the radiating holes 111 are arranged on the radiating surface 11, the inside of the inverter shell 1 is not in a closed state, thereby the temperature replacement of the inside air and the outside air is increased, and the dust-proof plate 24 can effectively prevent dust from entering the inside of the inverter case 1 through the heat radiation holes 111 and falling on the electronic components.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. Solar energy is from net inverter, including inverter housing (1), its characterized in that: the cooling shell (2) is fixedly connected to the outer wall of the inverter shell (1), a heat dissipation surface (11) is arranged at one end of the inverter shell (1), and a plurality of heat dissipation holes (111) are uniformly distributed in the heat dissipation surface (11);

the cooling structure of the inverter is characterized in that side cooling fin groups (3) are fixedly connected to two sides of the inverter shell (1), the side cooling fin groups (3) are communicated with the side face of the inverter shell (1) to the inside of the cooling shell (2), bottom cooling fin groups (4) are fixedly connected to the bottom face of the inner wall of the inverter shell (1), the bottom cooling fin groups (4) are communicated with the bottom face of the inverter shell (1) to the inside of the cooling shell (2), three uniformly distributed cooling fans (5) are fixedly connected to one end of the bottom face of the inverter shell (1), and the cooling fans (5) are electrically connected with an external power supply.

2. The solar off-grid inverter of claim 1, wherein: the upper end face of the bottom radiating fin group (4) is fixedly connected with a heat conducting plate (41), and the heat conducting plate (41) is located above the radiating fan (5).

3. The solar off-grid inverter of claim 1, wherein: injection hole (21) have been seted up to cooling casing (2) up end, discharge hole (22) have been seted up to cooling casing (2) side bottom, injection hole (21) with discharge hole (22) all have the screw thread, cooling casing (2) inside has coolant liquid (23).

4. The solar off-grid inverter of claim 1, wherein: the bottom radiating fin group (4) is provided with three guide rib groups (43) at one end close to the radiating fan (5), the guide rib groups (43) are arc-shaped in overlooking shape, and the guide rib groups (43) are fixedly connected with two sides of the output end of the radiating fan (5).

5. The solar off-grid inverter of claim 1, wherein: inverter casing (1) one side fixedly connected with exhaust plate (12), exhaust plate (12) are located cooling surface (11) bottom, cooling surface (11) outer wall is kept away from exhaust plate (12) one end fixedly connected with dust guard (24).

6. The solar off-grid inverter of claim 1, wherein: and a heat insulation part (42) is fixedly connected between the bottom of the bottom radiating fin group (4) and the inner wall of the cooling shell (2).