Inverter

Abstract

The utility model relates to an inverter, in particular to a single-phase photovoltaic grid-connected inverter, which comprises an upper cover and a radiator integrated on one side of the upper cover, a power board and an inductance component are arranged on the inner wall which is positioned in the upper cover and is close to one side of the radiator, a capacitor component is arranged on the power board, a fan component is further arranged in the upper cover, and the fan component is connected with the power board. The capacitor assembly is located on the edge of the power board, the inductor assembly is arranged on one side of the power board and close to the capacitor, the fan assembly is arranged between the inductor assembly and the capacitor assembly and used for absorbing heat generated by the inductor assembly and the capacitor assembly, and the air inlet end of the fan assembly intersects with the area where the inductor assembly and the capacitor assembly are located. The extension line of the air outlet end of the fan assembly inclines to the plane where the inner wall of the upper cover is located. The air inlet end of the fan assembly is located between the power board and the capacitor assembly, heat generated by the power board and the capacitor assembly can be taken away at the same time through the fan assembly, and the good heat dissipation effect is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to inverter technical field especially relates to a kind of inverter, specifically speaking, a single-phase photovoltaic grid-connected inverter. BACKGROUND

[0002] Single-phase photovoltaic grid-connected inverter is a kind of grid-connected inverter, and photovoltaic grid-connected inverter is the equipment that converts direct-current electric energy into 220V alternating current. It is composed of inductance, internal circuit board, internal fan, wiring harness and software.

[0003] The existing inductance built-in type single-phase photovoltaic grid-connected inverter has the problem of excessively high temperature of relay and electrolytic capacitor, and unilateral increase of the height of radiator fin or heat-conducting silicone rubber cannot meet the internal cooling demand of whole machine. Therefore, it is necessary to improve the structure of existing inverter for the above problems. UTILITY MODEL CONTENT

[0004] The utility model discloses to solve the problems in the prior art, and provides an inverter, which solves the problem of poor heat dissipation effect of the inductance built-in type inverter in the prior art.

[0005] To solve the above problems, the following technical solutions are provided:

[0006] The utility model discloses an inverter, including upper cover and integrated in the radiator of upper cover one side, be equipped with power board and inductance component on the inner wall of one side in upper cover and close to radiator, there is capacitor component on the power board, still be equipped with fan component in the upper cover, capacitor component is located on the edge of power board setting, inductance component sets up on the one side of power board and close to capacitor setting, fan component is arranged between inductance component and capacitor component, fan component is used to suck away the heat generated by inductance component and capacitor component, the air inlet end of fan component and the area where inductance component and capacitor component are located intersect, the extension line of the air outlet end of fan component is obliquely arranged with the plane where the inner wall of upper cover is located.

[0007] The power board and capacitor component are integrated in the upper cover, and the fan component is further provided in the upper cover, the air inlet end of the fan component is located between the power board and the capacitor component, so that the heat generated by the power board and the capacitor component can be carried away by the fan component, and the air outlet end of the fan component is obliquely arranged with the inner wall of the upper cover, so that the airflow of the air outlet end of the fan component is approximately tangent to the inner wall of the upper cover. After tangency, a circulating airflow is formed in the upper cover. By the circulating airflow, the temperature of the surface of the power board can be greatly reduced, and the cooling effect of the internal part of the inverter is improved.

[0008] The fan assembly comprises a bracket, a fan body and a wind guide, the fan body is located on the air inlet of the wind guide, one end of the fan body is connected with the inner wall of the upper cover through the bracket, the wind guide is fixedly connected with the bracket or the inner wall of the upper cover, and the air outlet end of the fan assembly is the air outlet of the wind guide.

[0009] The fan assembly has the bracket and the fan body connected with the bracket, and the fan body is further provided with the wind guide on the air outlet, so that the air flow direction can be adjusted, the air flow is circulated in the upper cover, and the heat dissipation effect is improved.

[0010] The fan body is provided with two fan bodies, the wind guide has an air outlet and air inlets corresponding to the two fan bodies, one fan body faces the capacitor assembly, and the other fan body faces the inductor assembly.

[0011] The two fan bodies are arranged, and the two fan bodies correspond to the power board and the capacitor assembly respectively, so that the areas of the power board and the capacitor assembly can be cooled separately, and the cooling effect of the power board and the capacitor assembly contained in the relay is improved.

[0012] The wind guide comprises a wind guide pipe and a wind guide blade, the wind guide blade is arranged on the air outlet of the wind guide pipe, the wind guide pipe is a straight pipe and is arranged obliquely relative to the inductor assembly, and the wind guide blade is arranged on both sides of the air outlet and is in an outwardly flared shape.

[0013] The wind guide pipe is a straight pipe arranged obliquely, there is a point at the intersection between the inductor assembly and the capacitor assembly, a circle is drawn with the power board as a plane, so that the point is a point on the circle, the center line of the wind guide pipe can be approximately regarded as tangent to the circle, then the air flow from the straight pipe forms a circulating air flow through the inner wall of the upper cover, the wind guide blade is flared to both sides and has a guiding effect on the air flow, and the flow of the air flow is accelerated, so that the fan assembly can effectively take away heat.

[0014] The upper cover comprises an upper panel, a side plate and a lower panel, the periphery of the upper panel and the lower panel is connected by the side plate, the outer end surface of the lower panel is used for mounting the radiator, and the inner end surface of the lower panel is used for mounting the power board.

[0015] The upper cover is composed of the upper panel, the side plate and the lower panel, the inner side of the upper panel is used for mounting the fan assembly, the inner side of the lower panel is used for mounting the power board and the inductor assembly, and the lower panel is in contact with the radiator, so that the heat generated by the power board and the inductor assembly can be dispersed through the radiator, and the cooling effect is ensured.

[0016] The lower panel is provided with heat conduction grooves, a plurality of heat conduction grooves are arranged corresponding to the inductor assembly and the power board, heat conduction silica gel is arranged in the heat conduction grooves, and the heat conduction silica gel is used for transferring heat between the radiator and the inductor assembly and the power board.

[0017] The heat-conducting groove is provided on the lower panel, is through-provided, and the heat-conducting groove is provided with heat-conducting silica gel, and since the heat-conducting groove is provided on the lower panel, one side of the heat-conducting silica gel in the heat-conducting groove is in contact with the power board or the inductor assembly, and the other side is in contact with the heat sink, thereby improving the cooling effect of the heat sink on the relay and the electrolytic capacitor.

[0018] The above scheme has the following advantages:

[0019] 1. The inverter of the utility model includes a cover and a heat sink integrated on one side of the cover, a power board and an inductor assembly are arranged on the inner wall of the cover close to the heat sink, the power board is provided with a capacitor assembly, a fan assembly is further arranged in the cover, the capacitor assembly is arranged at the edge of the power board, the inductor assembly is arranged on one side of the power board close to the capacitor, the fan assembly is arranged between the inductor assembly and the capacitor assembly, the fan assembly is used for sucking away the heat generated by the inductor assembly and the capacitor assembly, the air inlet end of the fan assembly intersects with the area where the inductor assembly and the capacitor assembly are arranged, and the extension line of the air outlet end of the fan assembly is arranged obliquely to the plane where the inner wall of the cover is arranged; the air inlet end of the fan assembly is located between the power board and the capacitor assembly, the heat generated by the power board and the capacitor assembly can be taken away by the fan assembly, the air outlet end of the fan assembly is arranged obliquely to the inner wall of the cover, therefore, the airflow of the air outlet end of the fan assembly is approximately tangent to the inner wall of the cover, a circulating airflow is formed in the cover after the tangency, the temperature of the surface of the power board can be greatly reduced by the circulating airflow, and the cooling effect of the inverter is improved.

[0020] 2. The fan assembly includes a support, a fan body and a wind guide, the fan body is arranged on the air inlet of the wind guide, one end of the fan body is connected to the inner wall of the cover through the support, the wind guide is fixedly connected to the support or the inner wall of the cover, and the air outlet of the fan assembly is the air outlet of the wind guide; the fan assembly has the support and the fan body connected to the support, the fan body is further provided with the wind guide on the air outlet thereof, the airflow direction can be adjusted by the wind guide, the airflow circulates in the cover, and the heat dissipation effect is improved. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to make the content of the utility model more easily understood clearly, the utility model is further described in detail below according to the specific embodiments of the utility model and in combination with the drawings, wherein:

[0022] Figure 1 is the overall schematic view of the inverter of the first embodiment;

[0023] Figure 2 is the internal component schematic view of the inverter of the first embodiment;

[0024] Figure 3is a schematic diagram of an inverter according to a second embodiment;

[0025] Figure 4 FIG. 1 is a schematic diagram of an inverter according to a second embodiment.

[0026] Figure numerals: 1. Upper cover; 101. Upper panel; 102. Side panel; 103. Lower panel; 1031. Heat conduction groove; 2. Power board; 3. Inductor assembly; 4. Fan assembly; 401. Bracket; 402. Fan body; 403. Air duct; 4031. Air guide blade; 5. Capacitor assembly; 6. Radiator; 7. Thermal conductive silicone. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0028] like Figure 1 As shown, the inverter of the first embodiment includes an upper cover 1, a power board 2, a heat sink assembly, an inductor assembly 3, a capacitor assembly 5, and a fan assembly 4. A heat sink 6 is integrated into one side of the upper cover 1 and includes a heat sink substrate on which a plurality of heat dissipation fins are mounted. The power board 2 and the inductor assembly 3 are located on the inner wall of the upper cover 1, close to the heat sink 6. The power board 2 also has a capacitor assembly 5. The upper cover 1 is composed of an upper panel 101, side panels 102, and a lower panel 103. The upper and lower panels 101 and 103 are connected by the side panels 102. The outer end surface of the lower panel 103 is used to mount the heat sink 6, and the inner end surface of the lower panel 103 is used to mount the power board 2. The fan assembly 4 is mounted on the inner side of the upper panel 101. It can be seen that the upper cover 1 of the first embodiment is composed of an upper panel 101, a side panel 102 and a lower panel 103. The inner side of the upper panel 101 is used to install the fan assembly 4, and the inner side of the lower panel 103 is used to install the power board 2 and the inductor assembly 3. At the same time, the lower panel 103 is in contact with the radiator 6, so that the heat generated by the power board 2 and the inductor assembly 3 can be dispersed through the radiator 6 to ensure the cooling effect.

[0029] What needs to be protected is that the capacitor assembly 5 is located at the edge of the power board 2, the inductor assembly 3 is located on one side of the power board 2 and close to the capacitor, the fan assembly 4 is located between the inductor assembly 3 and the capacitor assembly 5, and the fan assembly 4 is used to absorb the heat generated by the inductor assembly 3 and the capacitor assembly 5. The air inlet end of the fan assembly 4 intersects with the area where the inductor assembly 3 and the capacitor assembly 5 are located, and the extension line of the air outlet end of the fan assembly 4 is inclined to the plane where the inner wall of the upper cover 1 is located.

[0030] Specifically, the inner side of the lower panel 103 is integrated with the power board 2 and the capacitor assembly 5, and the inner side of the upper panel 101 is provided with the fan assembly 4, and the fan assembly 4 is arranged close to the power board 2 and the capacitor assembly 5, that is, the air inlet end of the fan assembly 4 is located between the power board 2 and the capacitor assembly 5, so that the heat generated by the power board 2 and the capacitor assembly 5 can be taken away by the fan assembly 4, and the air outlet end of the fan assembly 4 is arranged obliquely to the inner wall of the upper cover 1, so that the airflow of the air outlet end of the fan assembly 4 is approximately tangent to the inner wall of the upper cover 1, and then forms a circulating airflow in the upper cover 1. Through the circulating airflow, the temperature of the surface of the power board 2 can be greatly reduced, and the cooling effect of the inverter internal is improved.

[0031] As shown in Figure 1 or Figure 2 The fan assembly 4 of the embodiment includes a bracket 401, a fan body 402, and a wind guide, the fan body 402 is located on the air inlet of the wind guide, one end of the fan body 402 is connected with the inner wall of the upper cover 1 through the bracket 401, and the wind guide is fixedly connected with the bracket 401 or the inner wall of the upper cover 1. The air outlet end of the fan assembly 4 is the air outlet of the wind guide. The fan assembly 4 has the bracket 401 and the fan body 402 connected with the bracket 401, and the fan body 402 is further provided with the wind guide on the air outlet. The airflow direction can be adjusted through the wind guide, so that the airflow circulates in the upper cover 1, and the heat dissipation effect is improved.

[0032] As an example, the wind guide has a wind guide pipe 403 and a wind guide blade 4031, the wind guide blade 4031 is arranged on the air outlet of the wind guide pipe 403, wherein the wind guide pipe 403 is a straight pipe and is arranged obliquely compared with the power board 2 as a whole, and the wind guide blade 4031 is arranged on both sides of the air outlet and is arranged in an outwardly flared shape. In addition, the wind guide pipe 403 of the embodiment adopts a straight pipe, and the airflow from the straight pipe forms a circulating airflow through the inner wall of the upper cover 1, and the wind guide blade 4031 is flared to both sides, which has a guiding effect on the airflow, accelerates the flow of the airflow, and ensures that the fan assembly 4 can effectively take away the heat.

[0033] As shown in Figure 3 As a second embodiment of the inverter, compared with the first embodiment, the fan body 402 is provided with two, the wind guide has one air outlet and two air inlets corresponding to the two fan bodies 402, one fan body 402 is directed to the capacitor assembly 5, and the other fan body 402 is directed to the inductor assembly 3. The reason why the embodiment is provided with two fan bodies 402 is to cope with the heat absorption of the power board 2 and the capacitor assembly 5 through the two fan bodies 402 respectively, so that the areas of the power board 2 and the capacitor assembly 5 can be cooled separately, and the cooling effect of the power board 2 and the capacitor assembly 5 contained in the relay is improved.

[0034] In the first and second embodiments described above, the capacitor assembly 5 and the inductor assembly 3 need to be arranged close to each other because both are high-temperature areas and are strong heat dissipation targets. When the airflow circulates, the high-temperature airflow enters another high-temperature airflow from one high-temperature area, which prevents the high-temperature area from dissipating heat. In essence, it can be regarded as heat preservation. Therefore, the two high-temperature areas are combined to facilitate the heat dissipation of the high-temperature airflow, thereby improving the cooling effect on the relay and the electrolytic capacitor.

[0035] The lower panel 103 is penetrated by a heat conducting groove 1031 , and a plurality of heat conducting grooves 1031 are provided corresponding to the inductor assembly 3 and the power board 2 . The heat conducting grooves 1031 are provided with heat conducting silicone rubber 7 , which is used to transfer heat between the radiator 6 and the inductor assembly 3 and the power board 2 .

[0036] like Figure 4 As shown, as the inverter of the third embodiment, compared with the first embodiment, a heat-conducting groove 1031 is provided on the lower panel 103, and the heat-conducting groove 1031 is set through and a heat-conducting silicone rubber 7 is provided in the heat-conducting groove 1031. Since the heat-conducting groove 1031 is provided on the lower panel 103, one side of the heat-conducting silicone rubber 7 in the heat-conducting groove 1031 is in contact with the power board 2 or the inductor component 3, and the other side is in contact with the radiator 6, thereby improving the cooling effect of the radiator 6 on the relay and the electrolytic capacitor.

[0037] Finally, it should be noted that in the above embodiment, the arrangement of the air duct 403 in the fan assembly 4 is as follows: there is a point at the intersection between the inductor assembly 3 and the capacitor assembly 5 and a circle is drawn with the power board 2 as the surface, so that the point is a point on the circle. If the air duct 403 adopts a straight tube, the center line of the air duct 403 can be approximately regarded as tangent to the circle. If the air duct 403 adopts an arc tube, the center line of the air duct 403 can be approximately regarded as coinciding with the circle. Then the airflow comes out of the straight tube and hits the side panel 102 to form a circulating airflow, and the air guide blades 4031 open to both sides, which has a guiding and pushing effect on the circulating airflow, accelerates the flow of the airflow, and thus ensures that the fan assembly 4 can effectively take away heat.

[0038] It is understood that the present invention is described by way of certain embodiments, and those skilled in the art will appreciate that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. Furthermore, under the guidance of the present invention, these features and embodiments may be modified to suit specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are intended to be protected by the present invention.

Claims

1. An inverter comprising an upper cover (1) and a heat sink (6) integrated on one side of the upper cover (1), a power board (2) and an inductor assembly (3) being arranged on an inner wall in the upper cover (1) and close to one side of the heat sink (6), a capacitor assembly (5) being arranged on the power board (2), and a fan assembly (4) being further arranged in the upper cover (1), characterized in that, The capacitor assembly (5) is arranged at the edge of the power board (2), the inductor assembly (3) is arranged on one side of the power board (2) and close to the capacitor, the fan assembly (4) is arranged between the inductor assembly (3) and the capacitor assembly (5), the fan assembly (4) is used for sucking away the heat generated by the inductor assembly (3) and the capacitor assembly (5), the air inlet end of the fan assembly (4) intersects with the area where the inductor assembly (3) and the capacitor assembly (5) are located, and the extension line of the air outlet end of the fan assembly (4) is arranged obliquely to the plane where the inner wall of the upper cover (1) is located.

2. An inverter according to claim 1, characterized in that The fan assembly (4) comprises a bracket (401), a fan body (402) and a wind guide, the fan body (402) is located on the air inlet of the wind guide, one end of the fan body (402) is connected with the inner wall of the upper cover (1) through the bracket (401), and the wind guide is fixedly connected with the bracket (401) or the inner wall of the upper cover (1). The air outlet end of the fan assembly (4) is the air outlet of the wind guide.

3. An inverter according to claim 2, wherein The fan body (402) is provided with two fan bodies (402), the wind guide has one air outlet and two air inlets corresponding to the two fan bodies (402), one fan body (402) faces the capacitor assembly (5), and the other fan body (402) faces the inductor assembly (3).

4. An inverter according to claim 2 or 3, characterised in that, The wind guide comprises a wind guide pipe (403) and a wind guide blade (4031), the wind guide blade (4031) is arranged on the air outlet of the wind guide pipe (403), the wind guide pipe (403) is a straight pipe and is arranged obliquely, and the wind guide blade (4031) is arranged on both sides of the air outlet and is in an outwardly flared shape.

5. An inverter according to claim 4, wherein The upper cover (1) comprises an upper panel (101), a side plate (102) and a lower panel (103), the periphery of the upper panel (101) and the lower panel (103) is connected by the side plate (102), the outer end surface of the lower panel (103) is used for mounting the radiator (6), and the inner end surface of the lower panel (103) is used for mounting the power board (2).

6. An inverter according to claim 5, wherein The lower panel (103) is provided with a heat conduction groove (1031) penetrating through, a plurality of heat conduction grooves (1031) are arranged corresponding to the inductor assembly (3) and the power board (2), heat conduction silica gel (7) is arranged in the heat conduction groove (1031), and the heat conduction silica gel (7) is used for transferring heat between the radiator (6) and the inductor assembly (3) and the power board (2).

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