Heat dissipation air duct for photovoltaic inverter power module

Abstract

The utility model discloses a heat radiation air channel used for a photovoltaic inverter power module, the heat radiation air channel comprises a housing, an axial flow fan, a fixing member and a fan flow guide cover, the axial flow fan is installed in the housing, the housing is fixed above the power module through the fixing member, and the fan flow guide cover is fixed in the housing; the shell is formed into a whole by fixing an air duct upper fixing piece, an air duct front plate, an air duct right plate, an air duct bottom plate and an air duct left plate; the fixing part comprises a fan fixing beam, a power module guide plate, a power module rear fixing metal plate, an air duct right side fixing beam and an air duct left side fixing beam. According to the utility model, one fan can carry out heat dissipation on three power modules (the maximum number is not more than three) to form one group, and the number of groups can be increased according to needs in practical application. The utility model can effectively improve the utilization rate of air volume, has the advantages of low cost, simple structure, reasonable layout, no waste of air volume and the like, enables the temperature to be controlled within a standard range, and reduces the failure rate.

Description

[Technical field]

[0001] The utility model relates to the technical field of photovoltaic inverters, in particular to the technical field of a heat dissipation air duct for a photovoltaic inverter power module. [Background technology]

[0002] Photovoltaic inverters are the link between solar panels and the power grid. They can transform the electricity generated by solar panels to meet the requirements of power transmission and output it to the power grid. Inverters are usually composed of functional devices such as circuit breakers, reactors, rectifier modules, and inverter modules. The power module is the core of the entire inverter. Whether its operation is normal and stable is an important indicator of whether the entire inverter is qualified. Heat dissipation plays a vital role in the stability of the power module operation. When the heat is too high, the module cannot work normally, which directly affects the power generation efficiency. Therefore, how to effectively dissipate heat from the power module has become a critical step in the entire inverter manufacturing process.

[0003] In traditional heat dissipation design, the number of fans is generally increased, or the specifications of the fans are improved; or a lot of copper tubes are added to the heat sink of the power module, but these two methods will undoubtedly increase a lot of costs.

[0004] In order to overcome the above disadvantages, a heat dissipation duct for a photovoltaic inverter power module is needed. [Utility Model Content]

[0005] The purpose of the utility model is to solve the problems in the prior art and propose a heat dissipation duct for photovoltaic inverter power modules, which can improve the heat dissipation efficiency of the power module during operation, thereby achieving the effect of reducing the failure rate and reducing costs. The utility model effectively improves the utilization rate of the air volume through the new air duct, can dissipate heat for each power module in a targeted manner, and has the advantages of low cost, simple structure, reasonable layout, no waste of air volume, etc., so that its temperature is controlled within a standard range and the failure rate is reduced.

[0006] To achieve the above purpose, the utility model proposes a heat dissipation duct for a photovoltaic inverter power module, the heat dissipation duct includes a housing, an axial flow fan, a fixing member and a fan air guide cover, the axial flow fan is installed in the housing, the housing is fixed above the power module by a fixing member, and a fan air guide cover is fixed inside the housing;

[0007] The shell is fixed to form a whole by the upper fixing parts of the duct, the front plate of the duct, the right plate of the duct, the bottom plate of the duct and the left plate of the duct, and a fan air guide cover is fixed between the right plate of the duct and the left plate of the duct; the fixing parts include a fan fixing beam, a power module guide plate, a rear fixing sheet metal of the power module, a right side fixing beam of the duct and a left side fixing beam of the duct, the fan fixing beam is transversely fixed to the right plate of the duct and the left plate of the duct, an axial flow fan is fixed on the fan fixing beam, the power module guide plate is longitudinally fixed to the bottom of the bottom plate of the duct, the rear fixing sheet metal of the power module is fixed to the lower outside of the front plate of the duct, the shell is fixed to the top of the power module through the power module guide plate and the rear fixing sheet metal of the power module, and the right side fixing beam of the duct and the left side fixing beam of the duct are respectively fixed to the outer sides of the right plate of the duct and the left plate of the duct.

[0008] Preferably, the shell is fixed as a whole by rivets through an upper fixing piece of the air duct, a front plate of the air duct, a right plate of the air duct, a bottom plate of the air duct and a left plate of the air duct.

[0009] Preferably, the shell is provided with a plurality of holes for threading, the positions of the holes can be designed as required, and plugs are installed at the holes to prevent air leakage; a wire mesh is also installed above the upper fixings of the air duct to prevent foreign objects from falling into the axial flow fan.

[0010] Preferably, the axial flow fan is of top-in and bottom-out type.

[0011] Preferably, a fixing hole is formed on the fan fixing beam, and the fixing hole is consistent with the mounting hole on the axial flow fan and is determined according to the model of the selected axial flow fan.

[0012] Preferably, the positions and structures of the fixed beams on the right side of the air duct and the fixed beams on the left side of the air duct can be modified according to the specific structure of the inverter, in order to fix the air duct.

[0013] Preferably, the power module guide plates are several pairs of relatively mounted L-shaped sheet metal parts, the power module guide plates are mounted on the air duct bottom plate, and the spacing between the power module guide plates should be greater than the installation width above the power module for ease of installation.

[0014] Preferably, the fan air guide cover is installed inside the shell, and the two ends of the fan air guide cover are bent to form a bending angle, which serves as a flow channel to facilitate heat dissipation. The middle of the fan air guide cover has an opening and the opening area is larger than the outlet area of ​​the axial flow fan to prevent air volume from being blocked.

[0015] The beneficial effects of the utility model are as follows: the utility model effectively improves the utilization rate of the air volume, can dissipate heat for each power module in a targeted manner, and has the advantages of low cost, simple structure, reasonable layout, no waste of air volume, etc., so that the temperature is controlled within a standard range and the failure rate is reduced.

[0016] The features and advantages of the present invention will be described in detail through embodiments in conjunction with the accompanying drawings.

Brief Description of the Drawings

[0017] Figure 1 This is a general axial view of a heat dissipation duct for a photovoltaic inverter power module of the utility model;

[0018] Figure 2 The utility model is a component axis view of a heat dissipation duct for a photovoltaic inverter power module. Figure 1 ;

[0019] Figure 3 The utility model is a component axis view of a heat dissipation duct for a photovoltaic inverter power module. Figure 2 ;

[0020] Figure 4 This is an exploded view of a heat dissipation duct for a photovoltaic inverter power module of the utility model;

[0021] Figure 5 This is a front view of a heat dissipation duct for a photovoltaic inverter power module of the utility model;

[0022] Figure 6 This is a rear view of a heat dissipation duct for a photovoltaic inverter power module of the utility model;

[0023] Figure 7 This is a left view of a heat dissipation duct for a photovoltaic inverter power module of the utility model;

[0024] Figure 8 This is a right view of a heat dissipation duct for a photovoltaic inverter power module of the utility model;

[0025] Fig. 9 This is a bottom view of a heat dissipation duct for a photovoltaic inverter power module of the utility model;

[0026] Fig.10 The utility model is a top view of a heat dissipation duct for a photovoltaic inverter power module.

[0027] In the figure: 1001 - axial flow fan, 5001 - power module, 201 - fan fixing beam, 202 - power module guide plate, 301 - power module rear fixing sheet metal, 302 - right side fixing beam of air duct, 303 - left side fixing beam of air duct, 401 - upper fixing part of air duct, 402 - front plate of air duct, 403 - right plate of air duct, 404 - bottom plate of air duct, 405 - left plate of air duct, 406 - fan air guide cover. [Specific implementation method]

[0028] See also Figure 1-Figure 10, the utility model, the heat dissipation air duct includes a housing, an axial flow fan 1001, a fixing member and a fan air guide 406, the axial flow fan 1001 is installed in the housing, the housing is fixed above the power module 5001 by a fixing member, and the fan air guide 406 is fixed inside the housing;

[0029] The shell is fixed to form a whole by the upper fixing part 401 of the air duct, the front plate 402 of the air duct, the right plate 403 of the air duct, the bottom plate 404 of the air duct and the left plate 405 of the air duct, and a fan air deflector 406 is fixed between the right plate 403 of the air duct and the left plate 405 of the air duct; the fixing part includes a fan fixing beam 201, a power module guide plate 202, a power module rear fixing sheet metal 301, a right side fixing beam 302 of the air duct and a left side fixing beam 303 of the air duct, and the fan fixing beam 201 is transversely fixed to the right plate 403 of the air duct and the left plate 405 of the air duct. On the left plate 405 of the duct, an axial flow fan 1001 is fixed on the fan fixing beam 201, the power module guide plate 202 is longitudinally fixed to the bottom of the duct bottom plate 404, the power module rear fixing sheet metal 301 is fixed to the outside and bottom of the duct front plate 402, the shell is fixed above the power module 5001 through the power module guide plate 202 and the power module rear fixing sheet metal 301, and the duct right side fixing beam 302 and the duct left side fixing beam 303 are respectively fixed on the outer sides of the duct right plate 403 and the duct left plate 405.

[0030] Working process of this utility model:

[0031] The utility model is a heat dissipation air duct for a photovoltaic inverter power module during operation, which is described in conjunction with the accompanying drawings.

[0032] like Figure 1 As shown, the utility model is a heat dissipation duct for a photovoltaic inverter power module. One axial flow fan 1001 can dissipate heat for three power modules 5001 (the maximum number cannot exceed three), which form a group. In actual use, the number of groups can be increased as needed.

[0033] like Figure 2 , 3 As shown, the utility model is a heat dissipation air duct for a photovoltaic inverter power module, comprising a housing, an axial flow fan 1001, a fixing member, and a fan air guide cover 406. The housing is provided with a hole for threading, and the position of the hole can be designed as required (in this example, it is opened at the lower left corner of the right plate 403 of the air duct), and a plug is installed to prevent air leakage;

[0034] The fixing parts include a fan fixing beam 201, a power module guide plate 202, a power module rear fixing sheet metal 301, a right side fixing beam 302 of the air duct, and a left side fixing beam 303 of the air duct;

[0035] The hole positions on the fan fixing beam 201 should be determined according to the model of the selected axial flow fan 1001;

[0036] The power module guide plates 202 are installed on the air duct bottom plate 404, and the spacing between the power module guide plates 202 should be larger than the installation width above the power module 5001 to facilitate installation.

[0037] The positions and structures of the fixed beam 302 on the right side of the air duct and the fixed beam 303 on the left side of the air duct can be modified according to the specific structure of the inverter, in order to fix the air duct.

[0038] The model of the axial flow fan 1001 can be selected as needed, and is a top-in and bottom-out type.

[0039] like Figure 4 As shown, the utility model is a heat dissipation duct for a photovoltaic inverter power module, wherein the shell includes an upper duct fixing member 401, a duct front plate 402, a duct right plate 403, a duct bottom plate 404, and a duct left plate 405; the shell is fastened with rivets to prevent air leakage.

[0040] A steel mesh may be installed above the upper fixing member 401 of the air duct to prevent foreign matter from falling into the axial flow fan 1001 .

[0041] The fan air guide cover 406 is installed inside the shell, and has bending angles at both ends, which serves as a flow channel to facilitate heat dissipation. The area of ​​the middle opening needs to be larger than the area of ​​the fan outlet to prevent blocking of air volume.

[0042] The utility model proposes a design of a heat dissipation air duct for the power module, effectively improves the utilization rate of the air volume, can dissipate heat for each power module in a targeted manner, and has the advantages of low cost, simple structure, reasonable layout, no waste of air volume, etc., so that the temperature is controlled within a standard range and the failure rate is reduced.

[0043] The above embodiments are intended to illustrate the present invention, not to limit the present invention. Any solution that is a simple transformation of the present invention falls within the protection scope of the present invention.

Claims

1. A heat dissipation duct for a photovoltaic inverter power module, characterized in that: The heat dissipation air duct comprises a housing, an axial flow fan (1001), a fixing member and a fan air guide cover (406); the axial flow fan (1001) is installed in the housing; the housing is fixed above the power module (5001) by the fixing member; and the fan air guide cover (406) is fixed inside the housing; The housing is fixed to form a whole by an upper fixing piece (401) of the air duct, a front plate (402) of the air duct, a right plate (403) of the air duct, a bottom plate (404) of the air duct and a left plate (405) of the air duct, and a fan air guide cover (406) is fixed between the right plate (403) of the air duct and the left plate (405) of the air duct; the fixing piece comprises a fan fixing beam (201), a power module guide plate (202), a rear fixing sheet metal of the power module (301), a right fixing beam (302) of the air duct and a left fixing beam (303) of the air duct, and the fan fixing beam (201) is transversely fixed to the right plate (403) and the left plate (405) of the air duct An axial flow fan (1001) is fixed on the fan fixing beam (201) on the left plate (405) of the air duct, a power module guide plate (202) is longitudinally fixed to the bottom of the air duct bottom plate (404), a power module rear fixing sheet metal (301) is fixed to the outside and below of the air duct front plate (402), a shell is fixed to the top of the power module (5001) through the power module guide plate (202) and the power module rear fixing sheet metal (301), and a right side fixing beam (302) and a left side fixing beam (303) of the air duct are respectively fixed to the outer surfaces of the right plate (403) and the left plate (405) of the air duct.

2. A heat dissipation duct for a photovoltaic inverter power module according to claim 1, characterized in that: The shell is fixed as a whole by means of rivets to the upper fixing piece (401) of the air duct, the front plate (402) of the air duct, the right plate (403) of the air duct, the bottom plate (404) of the air duct and the left plate (405) of the air duct.

3. The heat dissipation duct for a photovoltaic inverter power module according to claim 1, characterized in that: The shell is provided with a plurality of holes for threading wires, and plugs are installed at the holes; a steel mesh is also installed above the upper fixing member (401) of the air duct.

4. The heat dissipation duct for a photovoltaic inverter power module according to claim 1, characterized in that: The axial flow fan (1001) is of the top-in and bottom-out type.

5. The heat dissipation duct for a photovoltaic inverter power module according to claim 1, characterized in that: The fan fixing beam (201) is provided with a fixing hole, and the fixing hole is consistent with the mounting hole on the axial flow fan (1001).

6. The heat dissipation duct for a photovoltaic inverter power module according to claim 1, characterized in that: The right side fixed beam (302) of the air duct and the left side fixed beam (303) of the air duct are connected to the inverter, and the right side fixed beam (302) of the air duct and the left side fixed beam (303) of the air duct are used to fix the heat dissipation air duct.

7. The heat dissipation duct for a photovoltaic inverter power module according to claim 1, characterized in that: The power module guide plates (202) are a plurality of pairs of L-shaped sheet metal parts installed opposite to each other, and the spacing between the L-shaped sheet metal parts installed opposite to each other is greater than the installation width above the power module (5001).

8. The heat dissipation duct for a photovoltaic inverter power module according to claim 1, characterized in that: The fan air guide cover (406) is installed inside the shell, and the two ends of the fan air guide cover (406) are bent to form a bending angle. The middle of the fan air guide cover (406) has an opening, and the opening area is larger than the air outlet area of ​​the axial flow fan (1001).

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