Converter and photovoltaic device

Abstract

The application provides a converter and a photovoltaic device. The converter comprises a cabinet body, an air inlet and an air outlet arranged on the cabinet body, a partition plate arranged in the cabinet body, the partition plate separates the inside of the cabinet body into an air inlet channel and an air outlet channel, the air inlet, the air inlet channel, the air outlet channel and the air outlet are sequentially communicated, a heating component, and a condensing structure. The converter and the photovoltaic device provided by the application condense the gas entering the cabinet body for cooling the heating component and the air absorbing heat at the heating component by using the condensing structure, effectively prevent water vapor from condensing at the heating component, avoid the damage of the heating component caused by the condensation of the gas at the heating component, and avoid the scheme of using the heater to prevent condensation in the prior art, effectively ensure the heat dissipation efficiency of the heating component.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of photovoltaic equipment, in particular to a converter and photovoltaic equipment. BACKGROUND

[0002] At present, the high-power converter on the market is provided with a ventilation device and a heater. The ventilation device is used to drive air flow to pass through the heating component to form convection heat dissipation. The heater is used to increase the temperature of the gas to avoid condensation. When the temperature exceeds 40℃, the ventilation device is started to ventilate and dissipate heat. When the relative humidity exceeds 80%, the heater is started to avoid condensation.

[0003] However, when the converter is in an environment that meets the above two conditions at the same time, that is, the hot and humid air with a temperature above 40℃ and a relative humidity greater than 80% is used as the heat exchange medium, the heat dissipation effect of the converter will be greatly reduced due to the heating of the heater and the superposition of air heat, causing the problem of low reliability of the converter. SUMMARY

[0004] In order to solve the technical problem of low heat dissipation efficiency and low reliability of the converter in the prior art, a converter and photovoltaic equipment are provided, which uses a condensation structure to cool and condense the gas at a set position to improve reliability.

[0005] A converter comprises:

[0006] A cabinet body, wherein an air inlet and an air outlet are arranged on the cabinet body;

[0007] A partition plate arranged in the cabinet body, wherein the partition plate divides the interior of the cabinet body into an air inlet channel and an air outlet channel, and the air inlet, the air inlet channel, the air outlet channel and the air outlet are sequentially communicated;

[0008] A heating component arranged in the air inlet channel and / or the air outlet channel;

[0009] A condensation structure arranged in the cabinet body, wherein part of the condensation structure is arranged at the air inlet, and part of the condensation structure is arranged at the air outlet.

[0010] The cabinet body comprises a top plate, and the air inlet and the air outlet are arranged on the top plate.

[0011] The condensation structure comprises a water collecting plate and a refrigerant pipe, the water collecting plate is provided with a plurality of air passing holes, the refrigerant pipe is located on the side of the water collecting plate facing the top plate, and the refrigerant pipe sequentially passes through all the air passing holes.

[0012] The water collecting plate has an included angle with the horizontal plane, and the included angle ranges from 30° to 60°.

[0013] The cross section of the water receiving plate is inverted V-shaped, and the top angle of the water receiving plate faces the top plate.

[0014] The air passing holes form a plurality of air passing hole rows on the water receiving plate, and the refrigerant pipe sequentially passes all the air passing hole rows in an S-shaped manner.

[0015] The current transformer further comprises a first fan assembly and a second fan assembly, the first fan assembly is arranged in the air inlet channel, and the second fan assembly is arranged in the air outlet channel.

[0016] The air volume of the first fan assembly is greater than that of the second fan assembly.

[0017] The heat exchange area of the condensing structure arranged in the air inlet channel is greater than that of the condensing structure arranged in the air outlet channel.

[0018] The air inlet is provided with a filtering structure.

[0019] A photovoltaic device comprises the current transformer.

[0020] The current transformer and the photovoltaic device provided by the application condense the gas entering the cabinet for cooling the heat generating component and the air after absorbing heat at the heat generating component by using the condensing structure, effectively prevent water vapor from condensing at the heat generating component, avoid the damage of the heat generating component caused by the condensation of the gas at the heat generating component, and avoid the scheme of using the heater to prevent condensation, effectively ensure the heat dissipation efficiency of the heat generating component, enable the current transformer to be used in a humid and hot environment, and ensure the reliability of the alternating current device. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 The structural schematic diagram of the current transformer provided by the embodiment of the application is shown in the figure;

[0022] Figure 2 The structural schematic diagram of the condensing structure provided by the embodiment of the application is shown in the figure;

[0023] In the figure:

[0024] 1, cabinet; 11, air inlet; 12, air outlet; 2, partition; 13, air inlet channel; 14, air outlet channel; 3, heat generating component; 4, condensing structure; 15, top plate; 41, water receiving plate; 42, refrigerant pipe; 43, air passing hole; 5, first fan assembly; 6, second fan assembly. DETAILED DESCRIPTION

[0025] In order to make the objects, technical solutions and advantages of the present application clearer, the present application will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and should not be used to limit the present application.

[0026] As shown in Figure 1 and Figure 2 The converter shown in the drawings comprises a cabinet 1, an air inlet 11 and an air outlet 12 are arranged on the cabinet 1; a partition 2 is arranged in the cabinet 1, and the partition 2 divides the inside of the cabinet 1 into an air inlet channel 13 and an air outlet channel 14, the air inlet 11, the air inlet channel 13, the air outlet channel 14 and the air outlet 12 are sequentially communicated; a heating component 3 is arranged in the air inlet channel 13 and / or the air outlet channel 14; a condensing structure 4 is arranged in the cabinet 1, and part of the condensing structure 4 is arranged at the air inlet 11, and part of the condensing structure 4 is arranged at the air outlet 12. The condensing structure 4 is used to condense the gas entering the cabinet 1 for cooling the heating component 3 and the air after absorbing heat at the heating component 3, effectively preventing water vapor from condensing at the heating component 3, avoiding the damage of the heating component 3 caused by the condensation of the gas at the heating component 3, and avoiding the scheme of using the heater in the prior art to prevent condensation, effectively ensuring the heat dissipation efficiency of the heating component 3.

[0027] The cabinet 1 comprises a top plate 15, and the air inlet 11 and the air outlet 12 are arranged on the top plate 15. The air inlet 11 and the air outlet 12 are arranged on the top plate 15 of the cabinet 1, the cold air is more easily sinking and the hot air is more easily rising, the flow rate of the cold air in the air inlet channel 13 is increased, and the flow rate of the hot air in the air outlet channel 14 is increased, thereby further improving the heat dissipation efficiency of the converter.

[0028] As an implementation, the condensing structure 4 comprises a water collecting plate 41 and a refrigerant pipe 42, the water collecting plate 41 is provided with a plurality of air passing holes 43, the refrigerant pipe 42 is located on the side of the water collecting plate 41 facing the top plate 15, and the refrigerant pipe 42 passes through all the air passing holes 43 in sequence. The gas needs to pass through the air passing hole 43 when flowing through the condensing structure 4, and in the process, the gas passes through the refrigerant pipe 42, which cools and condenses the gas, and the condensed water is collected by the water collecting plate 41 and drained to a designated position, so that the dry and cold gas flows to the heat generating component 3 to dissipate heat and ensure the reliability of the inverter. Similarly, the air temperature after heat exchange with the heat generating component 3 is higher, and it can carry more water vapor than ordinary air, so that the air passes through the air passing hole 43 on the water collecting plate 41 before being discharged from the air outlet 12, and then contacts the refrigerant pipe 42 to be condensed. Similarly, the condensed water condensed at the condensing pipe is collected by the water collecting plate 41 and drained to a designated position, which can further prevent the possibility of water vapor condensing at the bottom of the inverter. When dust and the like enter the cabinet 1, they will first accumulate on the water collecting plate 41, and then flow out under the action of the condensed water, as sewage, to reduce the dust content at the heat generating component 3 and improve the reliability of the inverter.

[0029] Optionally, the air passing holes 43 form a plurality of air passing hole 43 rows on the water collecting plate 41, and the refrigerant pipe 42 is in an S shape and passes through all the air passing hole 43 rows in sequence. It is convenient to arrange the refrigerant pipe 42.

[0030] In order to facilitate the drainage of the water collecting plate 41 to the condensed water, the water collecting plate 41 has an angle with the horizontal plane, and the angle is in the range of 30° to 60°. Preferably, the angle is 45°. The water collecting plate 41 is inclined to drain the condensed water to the side wall of the cabinet 1, and then other structures can be used to drain the condensed water out of the cabinet 1 or to other positions.

[0031] As an implementation, the cross section of the water collecting plate 41 is inverted V-shaped, and the top angle of the water collecting plate 41 faces the top plate 15. The water collecting plate 41 can drain the condensed water to both sides of the cabinet 1, so that the condensed water on the water collecting plate 41 does not flow too long and drop from the air passing hole 43 to the heat generating component 3, further ensuring the reliability of the inverter.

[0032] The converter also includes a first fan assembly 5 and a second fan assembly 6. The first fan assembly 5 is disposed in the air intake channel 13, and the second fan assembly 6 is disposed in the air outlet channel 14. The first fan assembly 5 can draw air from outside the cabinet 1 into the air intake channel 13 through the air inlet 11, and force the air to be cooled and dehumidified by the condenser structure 4 before blowing it onto the heat-generating components 3, thereby achieving cooling of the heat-generating components 3. Under the dual action of the first fan assembly 5 and the active downward flow of cold air, the air velocity in the air intake channel 13 is increased, thereby increasing the heat dissipation efficiency of the heat-generating components 3 in the air intake channel 13. Similarly, the second fan assembly 6 can pump the air from the air outlet channel 14 to the condenser structure 4, and finally discharge it from the cabinet 1 through the air outlet 12. The hot air inside cabinet 1 is mainly generated by heat exchange with the reactor and tends to concentrate above the reactor. If the hot air is not collected, the heat dissipation effect will be reduced. Therefore, an air duct design is made to collect the hot air, transport the cold air to the bottom as quickly as possible, and exhaust the hot air to the condenser plate for condensation removal.

[0033] The air volume of the first fan assembly 5 is greater than that of the second fan assembly 6. This further increases the movement speed and volume of cold air, thereby ensuring the heat exchange efficiency of the reactor.

[0034] Preferably, the first fan assembly 5 includes two fans arranged side by side, and the second fan assembly 6 is a single fan.

[0035] The heat exchange area of ​​the condensing structure 4 located in the air intake channel 13 is larger than that of the condensing structure 4 located in the air outlet channel 14. For example... Figure 1 As shown, the upper part of the partition 2 is inclined, so that the left half and part of the right half of the V-shaped structure are included in the air intake channel 13, thereby increasing the heat exchange area of ​​the condensation structure 4 in the air intake channel 13 and increasing the cooling and dehumidification effect on the gas in the air intake channel 13.

[0036] A filter structure is installed at the air inlet 11. The filter structure blocks and filters out some larger foreign objects, further improving the reliability of the converter.

[0037] A photovoltaic device includes the aforementioned converter.

[0038] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention. Therefore, the scope of protection of this patent should be determined by the appended claims.

Claims

1. A current transformer characterized by: The application relates to a converter, which comprises the following parts: a cabinet (1) provided with an air inlet (11) and an air outlet (12); a partition (2) arranged in the cabinet (1) and separating the inside of the cabinet (1) into an air inlet channel (13) and an air outlet channel (14), wherein the air inlet (11), the air inlet channel (13), the air outlet channel (14) and the air outlet (12) are sequentially communicated; a heating component (3) arranged in the air inlet channel (13) and / or the air outlet channel (14); a condensing structure (4) arranged in the cabinet (1), wherein part of the condensing structure (4) is arranged at the air inlet (11) and part of the condensing structure (4) is arranged at the air outlet (12); the cabinet (1) comprises a top plate (15), and the air inlet (11) and the air outlet (12) are arranged on the top plate (15); the condensing structure (4) comprises a water collecting plate (41) and a refrigerant pipe (42), the water collecting plate (41) is provided with a plurality of air passing holes (43), the refrigerant pipe (42) is arranged on the side of the water collecting plate (41) facing the top plate (15), and the refrigerant pipe (42) sequentially passes through all the air passing holes (43); the water collecting plate (41) has an angle with the horizontal plane, and the angle ranges from 30 DEG to 60 DEG ; the converter further comprises a first fan assembly (5) arranged in the air inlet channel (13) and a second fan assembly (6) arranged in the air outlet channel (14).

2. The current transformer of claim 1, characterized in that: The cross section of the water collecting plate (41) is inverted V-shaped, and the top angle of the water collecting plate (41) faces the top plate (15).

3. The current transformer of claim 1, wherein: The air passing holes (43) form a plurality of air passing hole (43) rows on the water collecting plate (41), and the refrigerant pipe (42) sequentially passes through all the air passing hole (43) rows in an S-shaped manner.

4. The current transformer of claim 1, wherein: The air volume of the first fan assembly (5) is greater than that of the second fan assembly (6).

5. The current transformer of claim 4, characterized in that: The heat exchange area of the condensing structure (4) arranged in the air inlet channel (13) is greater than that of the condensing structure (4) arranged in the air outlet channel (14).

6. The current transformer of claim 1, wherein: The air inlet (11) is provided with a filtering structure.

7. A photovoltaic device, characterized by: The application further relates to a converter comprising any one of the converters in claims 1 to 6.

Images