CN210928430U - Inverter heat dissipation device for photovoltaic - Google Patents

Abstract

The utility model provides a heat dissipation device for a photovoltaic inverter, belonging to the field of inverters. The heat dissipation device for a photovoltaic inverter comprises a box body, a heat dissipation component and an isolation component. The box body includes an outer shell and a cover plate, the upper end surface of the outer shell is provided with an opening, and the cover plate is installed on the upper end surface of the outer shell. The heat dissipation assembly includes a heat dissipation plate, a heat dissipation fan and a heat pipe, the heat dissipation plate is arranged inside the casing, and one end of the heat pipe is connected to the heat dissipation plate; the heat generated by the components inside the installation cavity passes through the outer surface of the heat dissipation plate to the outside. Diffusion is carried out, and the air flow is driven by starting the cooling fan, so that the air in the cooling cavity flows, and the heat on the surface of the cooling plate is blown away. The components in the cavity dissipate heat, which reduces the possibility of dust in the air adhering to the surface of the components and improves the dustproof capability.

Description

A photovoltaic inverter cooling device

technical field

The utility model relates to the field of inverters, in particular to a heat dissipation device for a photovoltaic inverter.

Background technique

The inverter converts DC power into AC power. It consists of inverter bridge, control logic and filter circuit. The use of inverters is very extensive in life, but the use of inverters usually generates heat, which increases the temperature of the inverter and needs to be dissipated by installing a heat sink.

The existing heat dissipation component is that the heat generating component is connected to the heat sink through a heat pipe, and the air flow is driven by a cooling fan to speed up the heat dissipation of the heat sink. .

Utility model content

In order to make up for the above deficiencies, the present invention provides a heat dissipation device for a photovoltaic inverter, which aims to improve the problems of low heat dissipation efficiency and poor dustproof effect.

The utility model is realized in this way:

A heat dissipation device for a photovoltaic inverter includes a box body, a heat dissipation component and an isolation component.

The box body includes an outer shell and a cover plate, the upper end surface of the outer shell is provided with an opening, and the cover plate is installed on the upper end surface of the outer shell.

The heat dissipation assembly includes a heat dissipation plate, a heat dissipation fan and a heat pipe, the heat dissipation plate is arranged inside the casing, one end of the heat pipe is connected to the heat dissipation plate, and the heat dissipation fan is fixed to one end of the casing.

The isolation assembly includes a first baffle plate and a second baffle plate, the first baffle plate and the second baffle plate are fixed on the bottom of the casing, and the two cooling plates are symmetrically arranged on both sides of the casing, The two heat dissipation plates, the first baffle plate and the second baffle plate form an annular closed installation cavity.

A heat dissipation cavity is formed between the two heat dissipation plates and the inner wall of the casing, and a heat dissipation port is formed between two ends of the second baffle plate and the inner wall of the casing, and the heat dissipation port is communicated with the heat dissipation cavity.

In an embodiment of the present invention, the bottom of the casing is provided with a base, the base is clamped with the lower surface of the casing, and a mounting hole is opened on the surface of the base.

In an embodiment of the present invention, a clamping slot is formed on the lower surface of the casing, a clamping block is fixed on the upper surface of the base, and the clamping block is clamped with the clamping slot.

In an embodiment of the present invention, the heat dissipation plate includes a heat conduction plate and a heat dissipation fin, the heat dissipation fin is arranged on the outer surface of the heat conduction plate, and the heat dissipation fin is welded and fixedly connected to the heat conduction plate .

In an embodiment of the present invention, one end of the heat pipe is fixed on the inner surface of the heat-conducting plate by means of bolts, and the connection between the heat pipe and the heat-conducting plate is coated with heat-conducting silicone grease.

In an embodiment of the present invention, two ends of the heat conducting plate are respectively clamped with the ends of the first baffle plate and the second baffle plate.

In an embodiment of the present invention, positioning grooves are provided on the inner walls of the first baffle plate and the second baffle plate, and positioning blocks are fixedly welded at both ends of the heat-conducting plate, and the positioning blocks inserted into the positioning groove.

In an embodiment of the present invention, the first baffle plate and the second baffle plate are integrally formed with the bottom of the casing.

In an embodiment of the present invention, the upper end surface of the casing is provided with threaded holes, the countersunk holes provided on the upper surface of the cover plate are inserted with screws, and the lower ends of the screws are threadedly connected to the threaded holes.

In an embodiment of the present invention, a through hole is opened at one end of the casing, the cooling fan is fixed in the through hole, and a dustproof mesh plate is arranged at the outer port of the through hole, and the dustproof The surface array of the mesh plate is provided with mesh holes.

The beneficial effects of the present invention are: the heat dissipation device for photovoltaic inverters obtained by the present invention through the above design, when in use, the heat generated by the components inside the installation cavity is diffused to the outside through the outer surface of the heat dissipation plate, and the heat is dissipated by starting the heat dissipation. The fan drives the airflow to make the air flow in the heat dissipation cavity, and the heat on the surface of the heat dissipation plate is blown away and taken away. The internal components dissipate heat, reduce the possibility of dust in the air adhering to the surface of the components, and improve the dustproof ability.

Description of drawings

In order to illustrate the technical solutions of the embodiments of the present invention more clearly, the accompanying drawings required in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention. Therefore, it should not be regarded as a limitation of the scope. For those of ordinary skill in the art, other related drawings can also be obtained from these drawings without any creative effort.

1 is a schematic structural diagram provided by an embodiment of the present invention;

2 is a schematic structural diagram of a box body provided by an embodiment of the present invention;

3 is a schematic structural diagram of a heat dissipation plate provided by an embodiment of the present invention;

FIG. 4 is a schematic diagram of the structure at A in FIG. 1 according to an embodiment of the present invention.

In the figure: 100-box body; 110-shell; 111-card slot; 113-radiation port; 115-threaded hole; 117-dust screen plate; 130-cover plate; 131-screw; 150-base; block; 300-heat dissipation assembly; 310-heat dissipation plate; 311-thermal conduction plate; 313-heat dissipation fin; 315-positioning block; 330-heat dissipation fan; 350-heat pipe; 500-isolation assembly; 510-first baffle; 530 -Second baffle; 540-positioning slot; 700-installation cavity; 900-heat dissipation cavity.

Detailed ways

In order to make the purposes, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described The embodiments of the present invention are a part of the embodiments of the present invention, but not all of the embodiments. Based on the present invention. Embodiments, and all other embodiments obtained by those of ordinary skill in the art without creative work, fall within the protection scope of the present invention.

Accordingly, the following detailed description of the embodiments of the invention provided 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 of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

It should be noted that like numerals and letters refer to like items in the following figures, so once an item is defined in one figure, it does not require further definition and explanation in subsequent figures.

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "Back", "Left", "Right", "Vertical", "Horizontal", "Top", "Bottom", "Inner", "Outer", "Clockwise", "Counterclockwise" etc. Or the positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed in a specific orientation and operation, so it cannot be construed as a limitation to the present invention.

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

In the present utility model, unless otherwise expressly specified and limited, the terms "installation", "connection", "connection", "fixed" and other terms should be understood in a broad sense, for example, it may be a fixed connection or a detachable connection Connection, or integration; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the internal communication between two elements or the interaction relationship between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

In the present invention, unless otherwise expressly specified and limited, a first feature "on" or "under" a second feature may include the first and second features in direct contact, or may include the first and second features The features are not in direct contact but through additional features between them. Also, the first feature being "above", "over" and "above" the second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is level higher than the second feature. The first feature is "below", "below" and "below" the second feature includes the first feature is directly below and diagonally below the second feature, or simply means that the first feature has a lower level than the second feature.

Example

Referring to FIGS. 1-4 , the present invention provides a technical solution: a heat dissipation device for a photovoltaic inverter, comprising a box body 100 , a heat dissipation assembly 300 and an isolation assembly 500 .

Referring to FIG. 2 , the box body 100 includes a casing 110 and a cover plate 130 . The upper end surface of the casing 110 is open and the cover plate 130 is installed on the upper end surface of the casing 110 . The bottom of the casing 110 is provided with a base 150, the base 150 is clamped with the lower surface of the casing 110, and a mounting hole is formed on the surface of the base 150 to facilitate the installation and fixation of the casing 110 by setting the base 150. A clamping block 151 is fixed on the upper surface of the 150, wherein the clamping block 151 is welded to the base 150, the clamping block 151 is clamped with the clamping slot 111, and the shell 110 and the base 150 are fixedly connected by clamping, which is convenient for disassembly.

Please continue to refer to FIG. 2 , a threaded hole 115 is formed on the upper end surface of the casing 110 , a screw 131 is inserted into the countersunk hole formed on the upper surface of the cover plate 130 , and the lower end of the screw 131 is threadedly connected with the threaded hole 115 , which is convenient for the casing 110 and the cover plate 130 Connection is fixed.

3-4, the heat dissipation assembly 300 includes a heat dissipation plate 310, a heat dissipation fan 330 and a heat pipe 350. The heat dissipation plate 310 is disposed inside the housing 110, and the heat dissipation plate 310 includes a heat dissipation plate 311 and heat dissipation fins 313. The heat dissipation fins 313 are disposed on On the outer surface of the heat-conducting plate 311, the heat-dissipating fins 313 are welded and fixedly connected to the heat-dissipating plate 311. By disposing the heat-dissipating fins 313, the heat of the heat-conducting plate 311 can be easily diffused to the outside, thereby increasing the heat dissipation rate. One end of the heat pipe 350 is connected to the heat-dissipating plate 310. , one end of the heat pipe 350 is fixed on the inner surface of the heat-conducting plate 311 by bolts. The connection between the heat pipe 350 and the heat-conducting plate 311 is coated with heat-conducting silicone grease, which is connected by bolts to facilitate disassembly and assembly and replacement of parts. By setting the heat-conducting silicone grease, the heat pipe 350 It is well connected to the heat conduction plate 311, which is convenient for heat transfer. The cooling fan 330 is fixed on one end of the casing 110. One end of the casing 110 is provided with a through hole. The cooling fan 330 is fixed in the through hole by bolts. 117. Mesh holes are formed on the surface of the dust-proof mesh plate 117 in an array.

Please continue to refer to FIG. 1 , the isolation assembly 500 includes a first baffle 510 and a second baffle 530 , the first baffle 510 and the second baffle 530 are fixed on the bottom of the housing 110 , the first baffle 510 and the second baffle 530 It is integrally formed with the bottom of the casing 110 to improve the connection strength between the structures and prevent looseness from affecting the use. The two heat dissipation plates 310 are symmetrically arranged on both sides of the casing 110. The two baffles 530 form an annular closed mounting cavity 700 .

Next, a heat dissipation cavity 900 is formed between the two heat dissipation plates 310 and the inner wall of the casing 110 , and a heat dissipation port 113 is formed between the two ends of the second baffle 530 and the inner wall of the casing 110 , and the heat dissipation port 113 communicates with the heat dissipation cavity 900 .

During the specific setting, both ends of the heat conducting plate 311 are clamped with the ends of the first baffle 510 and the second baffle 530 respectively, and the inner walls of the first baffle 510 and the second baffle 530 are both provided with positioning grooves 540 The two ends of the heat-conducting plate 311 are fixedly welded with positioning blocks 315, and the positioning blocks 315 are inserted into the positioning grooves 540, which facilitates the installation and disassembly of the heat-dissipating plate 310 and facilitates maintenance and use.

The working principle of the heat dissipation device for a photovoltaic inverter: when in use, the installation cavity 700 is provided to facilitate fixing the electrical components in the installation cavity 700, and the heat pipe 350 is used to connect with the element to be radiated to transfer heat to the heat dissipation plate 310, the heat generated by the components inside the installation cavity 700 is diffused to the outside through the outer surface of the heat dissipation plate 310, and the air flow is driven by starting the heat dissipation fan 330, so that the air in the heat dissipation cavity 900 flows, and the heat on the surface of the heat dissipation plate 310 is blown away and taken away. , the heat dissipation plates 310 are arranged on both sides of the inner wall of the housing 110, which increases the heat dissipation area, enhances the heat dissipation effect, improves the direct heat dissipation of the components in the installation cavity 700 by the external air, and reduces the possibility of dust in the air adhering to the surface layer of the components. Improved dust resistance.

It should be noted that the specific model and specifications of the cooling fan 330 need to be selected and determined according to the actual specifications of the device, and the specific selection and calculation method adopts the prior art in the field, so it will not be described in detail.

The power supply of the cooling fan 330 and its principle are clear to those skilled in the art, and will not be described in detail here.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims (10)

1. An inverter heat dissipation device for photovoltaic is characterized by comprising

The box body (100) comprises a shell (110) and a cover plate (130), the upper end face of the shell (110) is open, and the cover plate (130) is installed on the upper end face of the shell (110);

the heat dissipation assembly (300) comprises a heat dissipation plate (310), a heat dissipation fan (330) and a heat pipe (350), wherein the heat dissipation plate (310) is arranged inside the shell (110), one end of the heat pipe (350) is connected with the heat dissipation plate (310), and the heat dissipation fan (330) is fixed at one end of the shell (110);

the isolation assembly (500) comprises a first baffle plate (510) and a second baffle plate (530), the first baffle plate (510) and the second baffle plate (530) are fixed at the bottom of the shell (110), the two heat dissipation plates (310) are symmetrically arranged at two sides of the shell (110), and the two heat dissipation plates (310), the first baffle plate (510) and the second baffle plate (530) form an annular closed installation cavity (700);

two heating panel (310) with form heat dissipation chamber (900) between shell (110) inner wall, the both ends of second baffle (530) with form thermovent (113) between shell (110) inner wall, thermovent (113) with heat dissipation chamber (900) intercommunication.

2. The inverter heat sink for photovoltaic as recited in claim 1, wherein a base (150) is disposed at a bottom of the housing (110), the base (150) is clamped to a lower surface of the housing (110), and a mounting hole is formed in a surface of the base (150).

3. The inverter heat sink for photovoltaic as claimed in claim 2, wherein a clamping groove (111) is formed in a lower surface of the housing (110), a clamping block (151) is fixed to an upper surface of the base (150), and the clamping block (151) is clamped with the clamping groove (111).

4. The inverter heat sink for photovoltaic use according to claim 1, wherein the heat sink (310) comprises a heat conducting plate (311) and heat dissipating fins (313), the heat dissipating fins (313) are disposed on an outer surface of the heat conducting plate (311), and the heat dissipating fins (313) are fixedly welded to the heat conducting plate (311).

5. The inverter heat sink for photovoltaic use according to claim 4, wherein one end of the heat pipe (350) is fixed on the inner surface of the heat conducting plate (311) by bolts, and the joint of the heat pipe (350) and the heat conducting plate (311) is coated with heat conductive silicone grease.

6. The inverter heat sink for photovoltaic as claimed in claim 5, wherein both ends of the heat conducting plate (311) are respectively engaged with the ends of the first baffle (510) and the second baffle (530).

7. The inverter heat sink for photovoltaic as recited in claim 6, wherein the inner walls of the first baffle (510) and the second baffle (530) are respectively provided with a positioning groove (540), positioning blocks (315) are fixedly welded to two ends of the heat conducting plate (311), and the positioning blocks (315) are inserted into the positioning grooves (540).

8. The inverter heat sink for photovoltaic use according to claim 1, wherein the first baffle (510) and the second baffle (530) are integrally formed with the bottom of the housing (110).

9. The inverter heat sink for photovoltaic as claimed in claim 1, wherein a screw hole (115) is formed on an upper surface of the housing (110), a screw (131) is inserted into a counter bore formed on an upper surface of the cover plate (130), and a lower end of the screw (131) is in threaded connection with the screw hole (115).

10. The inverter heat sink for photovoltaic as claimed in claim 1, wherein a through hole is formed at one end of the housing (110), the heat dissipation fan (330) is fixed in the through hole, a dust screen (117) is disposed at an outer port of the through hole, and meshes are formed on a surface of the dust screen (117).

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