CN217545887U

CN217545887U - Off-grid photovoltaic inverter with good heat dissipation effect

Info

Publication number: CN217545887U
Application number: CN202123329304.7U
Authority: CN
Inventors: 彭宇; 沈健
Original assignee: Jiangsu Youchuang Information Technology Co ltd
Current assignee: Jiangsu Youchuang Information Technology Co ltd
Priority date: 2021-12-28
Filing date: 2021-12-28
Publication date: 2022-10-04
Anticipated expiration: 2031-12-28

Abstract

The utility model relates to an off-grid photovoltaic inverter that radiating effect is good, which comprises an outer shell, the inside of shell body is provided with interior casing, the inner wall of interior casing is provided with heat-conducting component, the outer wall of shell body is provided with freezing subassembly, the top of shell body is provided with cold wind mechanism, one side of cold wind mechanism is provided with the fan housing that is linked together, the fan housing is located the interior casing. This off-grid photovoltaic inverter that radiating effect is good, can detect the temperature in the internal casing through temperature sensor, in the time of the limit value, can conduct the heat that the circuit board produced in the shell through heat-conducting component, the coolant liquid absorbs the heat, limit value controller start-up fan when outer, water pump and cold water machine, water pump extraction coolant liquid and through the cold water machine cooling carry the cascade again, the fan is bloied and is passed through cascade and filter screen in proper order, make the air become dry cold air blow in the internal casing, reach rapid cooling's effect, the radiating effect has been improved.

Description

Off-grid photovoltaic inverter with good heat dissipation effect

Technical Field

The utility model relates to a from net photovoltaic inverter technical field, specifically be a radiating effect is good from net photovoltaic inverter.

Background

In an alternating current photovoltaic power generation system, an inverter is an indispensable part, and for various technical or policy reasons, a short period of time is needed for connecting all independent photovoltaic alternating current power generation systems to a national unified power grid, so that the market divides the photovoltaic inverter into a photovoltaic off-grid inverter and a photovoltaic grid-connected inverter; the photovoltaic off-grid inverter is a power conversion device, and is used for boosting the push-pull of input direct current and inverting the direct current into 220V alternating current through an inverter bridge SPWM sinusoidal pulse width modulation technology.

The off-grid photovoltaic inverter on the market at present is of various types, but the heat dissipation mode of most off-grid photovoltaic inverters at present adopts the fan to dissipate heat, and the heat dissipation effect of the mode is poor, can produce a large amount of heats when off-grid photovoltaic inverter runs at high power, and the fan dispels the heat untimely, can lead to the inside components and parts of equipment to damage.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art, the utility model provides a radiating effect is good leaves net photovoltaic inverter has solved current relatively poor problem of leaving net photovoltaic inverter radiating effect.

In order to achieve the above object, the utility model provides a following technical scheme: an off-grid photovoltaic inverter with good heat dissipation effect comprises an outer shell, wherein an inner shell is arranged inside the outer shell, a heat conduction assembly is arranged on the inner wall of the inner shell, a freezing assembly is arranged on the outer wall of the outer shell, a cold air mechanism is arranged at the top of the outer shell, a communicated fan cover is arranged on one side of the cold air mechanism, the fan cover is located inside the inner shell, and a temperature sensor is arranged inside the inner shell;

the cold air mechanism comprises a box body arranged at the top of the outer shell, a water curtain is arranged inside the box body, a fan is arranged on the right side of the box body, a fixing groove is formed in the inner bottom wall of the box body, an inserting port corresponding to the fixing groove in position is formed in the top of the box body, a filter screen is arranged between the inserting port and the inner side of the fixing groove, and a sealing cover plate is movably arranged inside the inserting port and at the top of the filter screen.

The utility model discloses an in the embodiment, the top of shell body is provided with the inlet tube, and the outside of inlet tube is provided with the tube cap, the top of shell body is provided with evenly distributed's thermovent, and the inside of thermovent is provided with the dustproof otter board of detachable.

The utility model discloses an in the embodiment, heat-conducting component includes a plurality of radiating fin, and is a plurality of radiating fin all sets up including on the inside wall of casing, and the homonymy is a plurality of radiating fin keeps away from and is connected with the absorber plate between one side of shell body.

In an embodiment of the utility model, the radiating fin is the aluminium board, the absorber plate is the copper board, one side that the radiating fin kept away from the absorber plate runs through interior casing and extends to the inside of shell body.

The utility model discloses an in one embodiment, freezing subassembly is including setting up the cold water machine at the outer casing lateral wall, the top of cold water machine is provided with the water pump, the drawing liquid end of water pump is connected with the drinking-water pipe, the play water end of water pump is connected with the outlet pipe.

The utility model discloses an in one embodiment, the one end that the water pump was kept away from to the drinking-water pipe runs through and extends to the inside of shell body, the one end that the water pump was kept away from to the outlet pipe runs through and extends to the inside of box and is connected with the end of intaking of cascade.

In one embodiment of the present invention, the water outlet end of the water curtain is connected to a return pipe, the bottom end of the return pipe penetrates through the box body and extends to the inside of the outer shell, and the filter screen is made of an activated carbon drying agent.

The utility model discloses an in an embodiment, one side that the fan was kept away from to the box is provided with the connecting pipe that is linked together, and the one end that the box was kept away from to the connecting pipe runs through the shell body and extends to the air inlet end of fan housing, the inside that runs through and extend to the box is held to the air-out of fan.

The utility model discloses an in one embodiment, the front of interior casing is provided with the detachable chamber door, and the front of chamber door is provided with the controller, temperature sensor, fan, water pump and cold water machine all are connected with the controller electricity.

Compared with the prior art, the technical scheme of the application has the following beneficial effects:

this off-grid photovoltaic inverter that radiating effect is good, can detect the inside temperature of interior casing through the temperature sensor and the controller cooperation that set up, when monitoring normal range value, heat conduction assembly can be in the heat conduction of circuit board production in the shell through heat-conduction, coolant liquid in the shell can be quick absorbs the heat of conduction, reach the purpose of cooling, monitor the temperature of interior casing inside when temperature sensor and exceed behind the limit value, the controller starts the fan, water pump and cold water machine, the water pump is with the water extraction and the cooling in the shell, then carry in the cascade, it makes the air become cold wind through the cascade to blow through the fan, the rethread filter screen is dried to cold air, make the air become dry cold air and blow in interior casing, and then reach rapid cooling's effect, the radiating effect has been improved, thereby be convenient for use it.

Drawings

FIG. 1 is a sectional view of the present invention;

fig. 2 is a structural sectional view of the cooling air mechanism of the present invention;

FIG. 3 is a top view of the box body of the present invention;

fig. 4 is a front view of the present invention;

fig. 5 is a top view of the fan housing structure of the present invention.

In the figure: 1. an outer housing; 2. an inner housing; 3. a heat conducting component; 4. a freezing assembly; 5. a cold air mechanism; 6. a fan housing; 7. a temperature sensor; 8. a controller; 31. a heat dissipating fin; 32. a heat absorbing plate; 41. a water chiller; 42. a water pump; 43. a water pumping pipe; 44. a water outlet pipe; 51. a box body; 52. a water curtain; 53. a fan; 54. fixing grooves; 55. a filter screen; 56. an interface; 57. and sealing the cover plate.

Detailed Description

To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings of the embodiments of the present invention are combined to clearly and completely describe the technical solutions of the embodiments of the present invention, and obviously, the described embodiments are 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.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. 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.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

Examples

Referring to fig. 1 to 5, the off-grid photovoltaic inverter with good heat dissipation effect in the present embodiment includes an outer casing 1, an inner casing 2 is disposed inside the outer casing 1, a heat conducting component 3 is disposed on an inner wall of the inner casing 2, a freezing component 4 is disposed on an outer wall of the outer casing 1, a cold air mechanism 5 is disposed at a top of the outer casing 1, a fan housing 6 communicated with the cold air mechanism 5 is disposed on one side of the cold air mechanism 5, the fan housing 6 is located inside the inner casing 2, and a temperature sensor 7 is disposed inside the inner casing 2.

In addition, the front of the inner shell 2 is provided with a detachable box door, the box door is connected with the inner shell 2 through a plurality of bolts, the front of the box door is provided with a controller 8, and the inside of the inner shell 2 is provided with a component circuit board.

Moreover, a water inlet pipe is arranged at the top of the outer shell 1, a pipe cover is arranged outside the water inlet pipe, uniformly distributed heat dissipation ports are formed in the top of the outer shell 1, and a detachable dustproof screen plate is arranged inside the heat dissipation ports; open the tube cap accessible inlet tube and add the coolant liquid in to outer casing 1, can play heat dissipation and dirt-proof effect through thermovent and the dust screen that sets up, can reduce outside dust and enter into inside the interior casing 2.

It should be noted that, the temperature inside the inner casing 2 can be detected through the cooperation of the temperature sensor 7 and the controller 8 that set up, when monitoring the normal range value, the heat conduction assembly 3 can conduct the heat that the circuit board produced to the outer casing 1 through heat conduction, the coolant liquid in the outer casing 1 can be quick absorbs the heat that conducts, reach the purpose of cooling, after the temperature sensor 7 monitored the inside temperature of inner casing 2 exceeded the limit value, the controller 8 starts the fan 53, water pump 42 and cold water machine 41, water pump 42 extracts and cools down the water in the outer casing 1, then carry in the cascade 52 again, blow through the cascade 52 through the fan 53 and make the air become cold wind, dry the cold air through the filter screen 55 again, make the air become dry cold air and blow in the inner casing 2, and then reach rapid cooling's effect, the radiating effect is improved, thereby be convenient for use it.

Referring to fig. 1, the heat conducting assembly 3 in the present embodiment includes a plurality of heat dissipating fins 31, the heat dissipating fins 31 are all disposed on an inner sidewall of the inner housing 2, and a heat absorbing plate 32 is connected between sides of the heat dissipating fins 31 away from the outer housing 1.

In addition, the side of the heat dissipating fins 31 away from the heat absorbing plate 32 penetrates the inner housing 2 and extends to the inside of the outer housing 1.

It should be noted that the heat dissipating fins 31 are made of aluminum, and the heat absorbing plate 32 is made of copper; the heat generated by the component circuit board is conducted into the outer case 1 through the heat absorbing plate 32 and the heat dissipating fins 31.

Referring to fig. 1, the freezing assembly 4 in the present embodiment includes a water cooler 41 disposed on an outer side wall of the outer casing 1, a water pump 42 is disposed on a top of the water cooler 41, a pumping end of the water pump 42 is connected to a pumping pipe 43, and a water outlet end of the water pump 42 is connected to a water outlet pipe 44.

It should be noted that one end of the pumping pipe 43 away from the water pump 42 penetrates and extends into the outer shell 1, and one end of the discharging pipe 44 away from the water pump 42 penetrates and extends into the box 51 and is connected with the water inlet end of the water curtain 52.

Referring to fig. 1 to 3, the cooling air mechanism 5 in this embodiment includes a box 51 disposed at the top of the outer casing 1, a water curtain 52 is disposed inside the box 51, a blower 53 is disposed at the right side of the box 51, a fixing groove 54 is disposed on an inner bottom wall of the box 51, a socket 56 corresponding to the fixing groove 54 is disposed at the top of the box 51, a filter screen 55 is disposed between the socket 56 and an inner side of the fixing groove 54, and a sealing cover plate 57 is movably disposed inside the socket 56 and at the top of the filter screen 55.

In addition, a return pipe is connected to the water outlet end of the water curtain 52, and the bottom end of the return pipe penetrates through the tank 51 and extends to the inside of the outer shell 1.

And, the box 51 is provided with the connecting pipe that is linked together on the side of keeping away from fan 53, and the one end that the connecting pipe kept away from box 51 runs through shell body 1 and extends to the air inlet end of fan housing 6, and the air-out end of fan 53 runs through and extends to the inside of box 51.

It should be noted that the filter screen 55 is made of an activated carbon desiccant, and has a function of drying wet air, and the filter screen 55 can be drawn out from the insertion port 56 by opening the sealing cover plate 57, so as to be convenient to replace.

In this embodiment, the temperature sensor 7, the fan 53, the water pump 42, and the water chiller 41 are all electrically connected to the controller.

The working principle of the above embodiment is as follows:

the temperature inside the inner shell 2 can be detected through the matching of the arranged temperature sensor 7 and the controller 8, when the normal range value is monitored, the arranged heat absorption plate 32 and the arranged heat dissipation fins 31 are matched to conduct heat generated by the circuit board into the outer shell 1 through heat conduction, and the cooling liquid in the outer shell 1 can quickly absorb the conducted heat so as to achieve the purpose of cooling; after temperature sensor 7 monitors that the inside temperature of interior casing 2 exceeds the limit value, controller 8 starts fan 53, water pump 42 and cold water machine 41, water pump 42 extracts the coolant liquid in with shell body 1 through drinking-water pipe 43 and advances to cool down in cold water machine 41, then carry in the cascade 52 through outlet pipe 44, the coolant liquid flows back to in the shell body 1 through the backward flow pipe of cascade 52 bottom, it makes the air become cold wind through cascade 52 to blow through fan 53, the rethread filter screen 55 is dried cold air, make the air become dry cold air and blow in interior casing 2 inside through connecting pipe and fan housing 6, and then reach rapid cooling's effect.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. 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. An off-grid photovoltaic inverter with a good heat dissipation effect is characterized by comprising an outer shell (1), wherein an inner shell (2) is arranged inside the outer shell (1), a heat conduction assembly (3) is arranged on the inner wall of the inner shell (2), a freezing assembly (4) is arranged on the outer wall of the outer shell (1), a cold air mechanism (5) is arranged at the top of the outer shell (1), a communicated fan cover (6) is arranged on one side of the cold air mechanism (5), the fan cover (6) is positioned inside the inner shell (2), and a temperature sensor (7) is arranged inside the inner shell (2);

the cold air mechanism (5) comprises a box body (51) arranged at the top of the outer shell (1), a water curtain (52) is arranged inside the box body (51), a fan (53) is arranged on the right side of the box body (51), a fixing groove (54) is formed in the inner bottom wall of the box body (51), a plug-in port (56) corresponding to the fixing groove (54) in position is formed in the top of the box body (51), a filter screen (55) is arranged between the plug-in port (56) and the inner side of the fixing groove (54), and a sealing cover plate (57) is movably arranged inside the plug-in port (56) and located at the top of the filter screen (55).

2. The off-grid photovoltaic inverter with good heat dissipation effect according to claim 1, characterized in that: the top of shell body (1) is provided with the inlet tube, and the outside of inlet tube is provided with the tube cap, the top of shell body (1) is provided with evenly distributed's thermovent, and the inside of thermovent is provided with the dustproof otter board of detachable.

3. The off-grid photovoltaic inverter with good heat dissipation effect according to claim 1, characterized in that: the heat conduction assembly (3) comprises a plurality of radiating fins (31), the radiating fins (31) are all arranged on the inner side wall of the inner shell (2), and the same side of the radiating fins (31) away from the outer shell (1) is connected with a heat absorbing plate (32).

4. The off-grid photovoltaic inverter with good heat dissipation effect according to claim 3, characterized in that: the heat dissipation plate is characterized in that the heat dissipation fins (31) are made of aluminum, the heat absorption plate (32) is made of copper, and one side, far away from the heat absorption plate (32), of each heat dissipation fin (31) penetrates through the inner shell (2) and extends to the inner portion of the outer shell (1).

5. The off-grid photovoltaic inverter with good heat dissipation effect according to claim 1, characterized in that: freezing subassembly (4) is including setting up cold water machine (41) at shells (1) lateral wall, the top of cold water machine (41) is provided with water pump (42), the end of drawing liquid of water pump (42) is connected with drinking-water pipe (43), the play water end of water pump (42) is connected with outlet pipe (44).

6. The off-grid photovoltaic inverter with good heat dissipation effect of claim 5, characterized in that: one end of the water pumping pipe (43) far away from the water pump (42) penetrates through and extends to the inside of the outer shell (1), and one end of the water outlet pipe (44) far away from the water pump (42) penetrates through and extends to the inside of the box body (51) and is connected with the water inlet end of the water curtain (52).

7. The off-grid photovoltaic inverter with good heat dissipation effect according to claim 1, characterized in that: the water outlet end of the water curtain (52) is connected with a return pipe, the bottom end of the return pipe penetrates through the box body (51) and extends to the inside of the outer shell (1), the filter screen (55) is made of an activated carbon desiccant.

8. The off-grid photovoltaic inverter with good heat dissipation effect according to claim 1, characterized in that: one side that fan (53) were kept away from in box (51) is provided with the connecting pipe that is linked together, and the one end that box (51) were kept away from to the connecting pipe runs through shell body (1) and extends to the air inlet end of fan housing (6), the inside that runs through and extend to box (51) is held in the air-out of fan (53).

9. The off-grid photovoltaic inverter with good heat dissipation effect of claim 5, characterized in that: the front surface of the inner shell (2) is provided with a detachable box door, the front surface of the box door is provided with a controller (8), and the temperature sensor (7), the fan (53), the water pump (42) and the water cooler (41) are all electrically connected with the controller.