Pressurizing cooling fan for photovoltaic inverter

Abstract

The utility model belongs to the technical field of heat dissipation of photovoltaic inverters, and particularly relates to a pressurizing heat dissipation fan for a photovoltaic inverter, which comprises a main mounting plate, a water tank and a fan mounting plate are respectively mounted on the upper side and the lower side of the main mounting plate, a plurality of heat exchange plates are adjacently mounted on the main mounting plate on the inner side of the fan mounting plate, and flow guide cores are filled in the heat exchange plates. Cooling fans are installed between the heat exchange plates and the fan installation plate, air channels are formed between the adjacent heat exchange plates, the top ends of the air channels are communicated with a water distribution box, the water distribution box and the water tank are communicated with the two ends of a flow adjusting valve respectively, a water inlet is formed in the top of the water tank, and a low-boiling-point solvent is contained in the water tank. The low-boiling-point solvent in the water tank is rapidly evaporated when flowing along the inner wall of the heat exchange plate, so that the surface temperature of the heat exchange plate is effectively reduced, the temperature of air flowing through the outer wall of the heat exchange plate under the suction of the heat dissipation fan is rapidly reduced, and an effective heat dissipation effect is achieved with low energy consumption after the air enters the inverter shell.

Description

Technical Field

[0001] The utility model belongs to the technical field of heat dissipation of photovoltaic inverters, and in particular relates to a booster heat dissipation fan for photovoltaic inverters. Background Art

[0002] An inverter is an electric power regulating device composed of semiconductor devices, which is mainly used to convert DC power into AC power. It is generally composed of a boost circuit and an inverter bridge circuit. The boost circuit boosts the DC voltage of the solar cell to the DC voltage required for the inverter output control; the inverter bridge circuit converts the boosted DC voltage into an AC voltage of a common frequency. Generally, the inverter is arranged in a cabinet shape, and various inverter components are installed in the cabinet. Then, air inlets and outlets are opened on the cabinet. The heat source of the photovoltaic inverter is the IGBT power device in the cabinet. In order to ensure the heat dissipation effect of the photovoltaic inverter, a cooling fan is generally required at the inlet of the cabinet.

[0003] In the prior art, photovoltaic inverters use a boost cooling fan to cool the inverter through air cooling. This method has a poor heat dissipation effect when the ambient temperature is high. In order to improve the heat dissipation effect, some technologies have proposed the use of semiconductor refrigeration sheets to cool down. However, although the use of refrigeration sheets improves the cooling effect, the power consumption of the refrigeration sheets is large, and there is a problem of frost on the surface that makes maintenance inconvenient. Utility Model Content

[0004] In view of the above problems, the purpose of the utility model is to provide a boost cooling fan for a photovoltaic inverter to solve the problem that the existing boost cooling fan for a photovoltaic inverter cannot achieve efficient heat dissipation with a low power consumption and low maintenance cost structure.

[0005] To achieve the above purpose, the utility model adopts the following technical solution: a boost cooling fan for a photovoltaic inverter, comprising a main mounting plate, a water tank and a fan mounting plate are respectively mounted on the upper and lower sides of the main mounting plate, a plurality of heat exchange plates are adjacently mounted on the main mounting plate inside the fan mounting plate, the interior of the heat exchange plate is filled with a guide core, a cooling fan is installed between the heat exchange plate and the fan mounting plate, an air duct is formed between adjacent heat exchange plates, the top end of the air duct is connected to a water diversion box, the water diversion box and the water tank are respectively connected to the two ends of a flow regulating valve, a water inlet is arranged on the top of the water tank, and a low-boiling-point solvent is contained in the interior of the water tank.

[0006] The beneficial effects of the utility model are as follows: the low-boiling-point solvent in the water tank evaporates quickly when flowing along the inner wall of the heat exchange plate, thereby effectively reducing the surface temperature of the heat exchange plate, and then the temperature of the air flowing through the outer wall of the heat exchange plate under the suction of the cooling fan is quickly reduced, and after entering the inverter housing, it plays an effective heat dissipation role with lower energy consumption.

[0007] In order to make the low boiling point solvent flow effectively along the inner wall of the heat exchange plate;

[0008] As a further improvement of the above technical solution: a through hole structure communicating with the top end of the guide core is provided at the bottom of the water diversion box.

[0009] The beneficial effect of this improvement is that under the distribution of the water distribution box, the water in the low-boiling point solvent flows into each heat exchange plate evenly through the flow regulating valve.

[0010] In order to make the low boiling point solvent flow effectively along the inner wall of the heat exchange plate;

[0011] As a further improvement of the above technical solution: the upper and lower ends of the guide core are flush with the upper and lower ends of the heat exchange plate, and the guide core is a sponge block structure.

[0012] The beneficial effect of this improvement is that the guide core plays a guiding role. After the low-boiling point solvent at the edge of the guide core is quickly evaporated due to its proximity to the heat exchange plate with a higher temperature, the low-boiling point solvent on the inside of the guide core can continue to flow to the edge of the guide core and fully contact the heat exchange plate under capillary action.

[0013] In order to avoid the low boiling point solvent from accumulating inside the heat exchange plate;

[0014] As a further improvement of the above technical solution: the heat exchange plate is a square tube structure that penetrates from top to bottom.

[0015] The beneficial effect of this improvement is that the low boiling point solvent can flow through the inner wall of the heat exchange plate under the action of gravity and be discharged smoothly.

[0016] In order to fully reduce the gaseous low-boiling-point solvent discharged from the bottom of the heat exchange plate from being washed and sucked into the cooling fan to affect the safety of the inverter;

[0017] As a further improvement of the above technical solution: a baffle is provided at the bottom end of the air duct.

[0018] The beneficial effect of this improvement is that the baffle prevents the air below from being directly sucked into the air duct, so that the outside air is sucked into the air duct from the front side of the air duct, thereby substantially reducing the gaseous low-boiling point solvent discharged from the bottom end of the heat exchange plate from being flushed and sucked into the cooling fan.

[0019] In order to enable operators to easily install this device on the inverter;

[0020] As a further improvement of the above technical solution: the fan mounting plate is provided with a bolt hole structure corresponding to the mounting hole on the heat dissipation fan.

[0021] The beneficial effect of this improvement is that the operator can use bolts to connect the fan mounting plate and the outer shell of the inverter to achieve convenient installation of the device.

[0022] The parts not involved in the device are the same as those in the prior art or can be implemented by using the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 The structure of the utility model is shown in FIG. Figure 1 ;

[0024] Figure 2 The structure of the utility model is shown in FIG. Figure 2 ;

[0025] Figure 3 It is a cross-sectional structural diagram of the utility model;

[0026] Figure 4 It is the front view of the utility model;

[0027] In the figure: 1. Main mounting plate; 2. Fan mounting plate; 3. Water tank; 4. Cooling fan; 5. Heat exchange plate; 6. Air duct; 7. Baffle; 8. Guide core; 9. Water separation box; 10. Flow regulating valve; 11. Water inlet; 12. Low boiling point solvent. DETAILED DESCRIPTION

[0028] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is described in detail below in conjunction with the accompanying drawings. The description in this part is only exemplary and explanatory and should not have any limiting effect on the protection scope of the present invention.

[0029] Embodiment 1:

[0030] like Figure 1—4 shows: a boost cooling fan for a photovoltaic inverter, comprising a main mounting plate 1, a water tank 3 and a fan mounting plate 2 are respectively mounted on the upper and lower sides of the main mounting plate 1, a plurality of heat exchange plates 5 are adjacently mounted on the main mounting plate 1 inside the fan mounting plate 2, the interior of the heat exchange plate 5 is filled with a guide core 8, a cooling fan 4 is mounted between the heat exchange plate 5 and the fan mounting plate 2, an air duct 6 is formed between adjacent heat exchange plates 5, the top of the air duct 6 is connected to a water separation box 9, the water separation box 9 and the water tank 3 are respectively connected to the two ends of a flow regulating valve 10, The top of the water tank 3 is provided with a water inlet 11, and the interior of the water tank 3 is filled with a low-boiling point solvent 12. The low-boiling point solvent 12 in the water tank 3 evaporates quickly when flowing along the inner wall of the heat exchange plate 5, thereby effectively reducing the surface temperature of the heat exchange plate 5, and then the temperature of the air flowing through the outer wall of the heat exchange plate 5 under the suction of the heat dissipation fan 4 is quickly reduced, and after entering the inverter housing, it plays an effective heat dissipation role with low energy consumption. The bottom of the water separation box 9 is provided with a through-hole structure connected to the top of the guide core 8. Under the distribution of the water separation box 9, the low-boiling point solvent 12 in The water flows into each heat exchange plate 5 evenly through the flow regulating valve 10. The upper and lower ends of the guide core 8 are flush with the upper and lower ends of the heat exchange plate 5. The guide core 8 is a sponge block structure. The guide core 8 plays a guiding role. The low boiling point solvent 12 at the edge of the guide core 8 is quickly evaporated due to being close to the heat exchange plate 5 with a higher temperature. The low boiling point solvent 12 on the inside of the guide core 8 can continue to flow to the edge of the guide core 8 and fully contact the heat exchange plate 5 under the capillary action. The heat exchange plate 5 is a square tube structure that runs through from top to bottom. The low boiling point solvent 12 can be Under the action of force, the air flows through the inner wall of the heat exchange plate 5 and is discharged smoothly. A baffle 7 is provided at the bottom of the air duct 6. The baffle 7 prevents the air below from being directly sucked into the air duct 6, so that the outside air is sucked into the air duct 6 from the front side of the air duct 6, thereby fully reducing the gaseous low-boiling point solvent 12 discharged from the bottom of the heat exchange plate 5 from being washed and sucked into the cooling fan 4. A bolt hole structure corresponding to the mounting hole on the cooling fan 4 is provided on the fan mounting plate 2. The operator can use bolts to connect the fan mounting plate 2 and the outer shell of the inverter to achieve convenient installation of the device.

[0031] The working principle of the technical solution is as follows: a through hole with the same diameter as the air duct of the heat dissipation fan 4 is preset on the inverter housing, and a through hole structure for connecting the bolt hole on the fan mounting plate 2 is opened at a corresponding position on the inverter housing; the heat dissipation fan 4 is slidably inserted into the fan mounting plate 2, and the installation connection of the heat dissipation fan 4 is completed while the inverter housing and the fan mounting plate 2 are connected by bolts; after the device is powered on, the flow regulating valve 10 is opened according to the preset valve path size. For example, in hot summer, the medium flow through the flow regulating valve 10 can be increased accordingly, thereby reducing the air inlet temperature by increasing the evaporation amount; the water tank 3 The low boiling point solvent 12 in the heat exchanger enters the water distribution box 9 through the flow regulating valve 10, and is evenly distributed through the water distribution box 9 to flow into the interior of multiple heat exchange plates 5, and is guided by the guide core 8 filled in the heat exchange plate 5 to flow downward along the inner wall of the heat exchange plate 5, and evaporates rapidly during the flow, thereby reducing the surface temperature of the heat exchange plate 5; the outside air is sucked into the inner side of the air duct 6 through the open parts of the air duct 6 at the upper and lower ends of the heat exchanger 4 under the suction of the heat dissipation fan 4, and flows along the outer surface of the heat exchange plate 5 with a lower surface temperature, thereby reducing the intake temperature, so that the air with a temperature lower than the ambient temperature is sent into the casing of the inverter, achieving efficient cooling.

[0032] It should be noted that, in this article, the terms "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or apparatus.

[0033] This article uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core ideas of the present invention. The above is only a preferred implementation of the present invention. It should be pointed out that due to the limitations of textual expression, there are objectively infinite specific structures. For ordinary technicians in this technical field, without departing from the principles of the present invention, they can make several improvements, modifications or changes, and can also combine the above technical features in an appropriate manner; these improvements, modifications, changes or combinations, or the direct application of the inventive concept and technical solution to other occasions without improvement, should be regarded as the protection scope of the present invention.

Claims

1. A boost cooling fan for a photovoltaic inverter, characterized in that: The invention comprises a main mounting plate (1), wherein a water tank (3) and a fan mounting plate (2) are respectively mounted on the upper and lower sides of the main mounting plate (1), a plurality of heat exchange plates (5) are adjacently mounted on the main mounting plate (1) inside the fan mounting plate (2), the interior of the heat exchange plates (5) is filled with a flow guide core (8), a heat dissipation fan (4) is mounted between the heat exchange plates (5) and the fan mounting plate (2), an air duct (6) is formed between adjacent heat exchange plates (5), the top end of the air duct (6) is connected to a water separation box (9), the water separation box (9) and the water tank (3) are respectively connected to the two ends of a flow regulating valve (10), a water inlet (11) is arranged at the top of the water tank (3), and a low-boiling-point solvent (12) is contained in the interior of the water tank (3).

2. A boost cooling fan for a photovoltaic inverter according to claim 1, characterized in that: The bottom of the water diversion box (9) is provided with a through hole structure which is in communication with the top end of the flow guide core (8).

3. The boost cooling fan for photovoltaic inverter according to claim 1, characterized in that: The upper and lower ends of the flow guide core (8) are flush with the upper and lower ends of the heat exchange plate (5), and the flow guide core (8) is a sponge block structure.

4. The boost cooling fan for photovoltaic inverter according to claim 1, characterized in that: The heat exchange plate (5) is a square tube structure that penetrates from top to bottom.

5. The boost cooling fan for photovoltaic inverter according to claim 1, characterized in that: A baffle (7) is provided at the bottom end of the air duct (6).

6. The boost cooling fan for photovoltaic inverter according to claim 1, characterized in that: The fan mounting plate (2) is provided with a bolt hole structure corresponding to the mounting hole on the heat dissipation fan (4).

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