CN220674241U - A photovoltaic inverter - Google Patents

Abstract

The utility model discloses a photovoltaic inverter, relates to the field of photovoltaic inverters, and aims to solve the problems that in the prior art, the internal temperature of a current photovoltaic inverter is high during working, a radiating structure is required to be arranged, the existing photovoltaic inverter mostly adopts a radiating hole structure, the radiating efficiency of a radiating mode of natural ventilation is low due to the fact that radiating holes are adopted in radiating holes, and the photovoltaic inverter installed outdoors in rainy days adopts the radiating hole structure design to easily cause rainwater to enter the inside to cause internal short circuit and damage to the inverter. The photovoltaic inverter comprises a photovoltaic inverter body, wherein a radiating net is arranged inside the photovoltaic inverter body, a radiating device is arranged at the rear end of the photovoltaic inverter body, a plurality of strip-shaped air inlets are formed in one side of the radiating device at equal intervals, a ventilation net is arranged on the other side of the radiating device, a plurality of rectangular blades are arranged inside the radiating device at equal intervals on one side of a second arc-shaped air deflector, a servo motor outer frame is arranged at the lower end of the second arc-shaped air deflector, and a servo motor is arranged inside the servo motor outer frame.

Description

A photovoltaic inverter

Technical field

The utility model relates to the field of photovoltaic inverters, specifically a photovoltaic inverter.

Background technique

A photovoltaic inverter is an inverter that can convert the variable DC voltage generated by photovoltaic solar panels into AC power at the mains frequency, which can be fed back to the commercial power transmission system or used by the off-grid power grid. The photovoltaic inverter is one of the important system balances in the photovoltaic array system and can be used with general AC power supply equipment. Solar inverters have special features that work with photovoltaic arrays, such as maximum power point tracking and islanding effect protection.

At present, the internal temperature of photovoltaic inverters is high when working, and a heat dissipation structure is required. Most existing photovoltaic inverters adopt a heat dissipation hole structure. The heat dissipation holes adopt natural ventilation heat dissipation mode, which has low heat dissipation efficiency and is installed in rainy days. Outdoor photovoltaic inverters adopt a cooling hole structure design that can easily cause rainwater to enter the interior and cause an internal short circuit, causing damage to the inverter. Therefore, the market urgently needs to develop a photovoltaic inverter to help people solve existing problems.

Utility model content

The purpose of this utility model is to provide a photovoltaic inverter to solve the problem in the above background technology. Most of the existing photovoltaic inverters adopt a heat dissipation hole structure. The heat dissipation holes adopt a natural ventilation heat dissipation mode and have low heat dissipation efficiency. Photovoltaic inverters installed outdoors on rainy days adopt a heat dissipation hole structure design, which can easily cause rainwater to enter the interior and cause internal short circuits, causing damage to the inverter.

In order to achieve the above purpose, the present utility model provides the following technical solution: a photovoltaic inverter, including a photovoltaic inverter main body. A heat dissipation network is provided inside the photovoltaic inverter main body. The heat dissipation network is connected with the photovoltaic inverter main body. A heat exchange cavity is provided between the internal rear end surfaces, an air inlet is provided on one side of the middle part of the internal rear end surface of the photovoltaic inverter main body, and an air outlet is provided on the other side of the middle part of the internal rear end surface of the photovoltaic inverter main body. A heat dissipation device is provided at the rear end of the main body of the photovoltaic inverter. A plurality of strip-shaped air suction outlets are arranged at equal intervals on one side of the heat dissipation device. An arc-shaped rain shield is fixedly connected to the outside of each strip-shaped air suction outlet. A ventilation net is provided on the other side of the heat dissipation device, a first arc-shaped air guide plate is provided on one side of the middle portion of the heat dissipation device, and a second arc-shaped air guide plate is provided on the other side of the middle portion of the heat dissipation device. A plurality of fan outer frames are arranged at equal intervals on one side of the first arc-shaped air guide plate inside the heat dissipation device. Fans are arranged inside the fan outer frames. The second arc-shaped air guide plate is provided inside the heat dissipation device. A plurality of rectangular blades are arranged at equal intervals on one side of the rectangular blade. A rotating tube is fixedly connected to one side of each rectangular blade. A rotating shaft is connected to the middle part of each rotating tube. The middle part of each rotating tube is provided with a rotating tube. Worm gears, a worm is arranged on one side of each worm gear, a servo motor outer frame is arranged at the lower end of the second arc-shaped air guide plate, and a servo motor is arranged inside the servo motor outer frame.

Preferably, the main body of the photovoltaic inverter is fixedly connected to the heat dissipation device, each of the arc-shaped rainshields is fixedly connected to the heat dissipation device, and each of the fan outer frames is fixedly arranged inside the heat dissipation device.

Preferably, the rear ends of the first arc-shaped air guide plate and the second arc-shaped air guide plate are fixedly connected to the internal rear end of the heat dissipation device.

Preferably, the front end of the first arc-shaped air guide plate is connected to the air inlet, and the front end of the second arc-shaped air guide plate is connected to the air outlet.

Preferably, an arc-shaped windshield is provided inside the heat exchange chamber between the air inlet and the air outlet.

Preferably, each of the worm gears is fixedly connected to each rotating tube, the front and rear ends of each rotating shaft are fixedly connected to the front and rear ends of the heat dissipation device, and each of the rotating tubes is rotationally connected to the rotating shaft.

Preferably, a plurality of worm teeth are arranged at equal intervals on the worm, and a worm wheel in the middle of each rotating tube is meshed with a plurality of worm teeth provided on the worm.

Preferably, the upper end of the worm is rotatably connected to a circular stopper, and the upper end of the circular stopper is fixedly connected to the upper end inside the heat dissipation device.

Preferably, a limit tube is provided on one side of the middle part of the upper end of the outer frame of the servo motor, and the lower end of the worm extends through the middle part of the limit tube to the inside of the outer frame of the servo motor and is fixedly connected with a first cone-shaped tooth.

Preferably, the servo motor output shaft is fixedly connected with a second conical tooth, and the first conical tooth at the lower end of the worm is meshed with the second conical tooth portion on the servo motor output shaft.

Compared with the existing technology, the beneficial effects of this utility model are:

1. In this utility model, through the arrangement of the first arc-shaped air guide plate, the second arc-shaped air guide plate and the arc-shaped wind shield, a first arc-shaped air guide plate is provided on one side of the middle part of the heat dissipation device to dissipate heat. There is a second arc-shaped air guide plate on the other side of the middle part of the device. The rear ends of the first arc-shaped air guide plate and the second arc-shaped air guide plate are fixedly connected to the rear end of the heat dissipation device. The first arc-shaped air guide plate The front end of the plate is connected to the air inlet, and the front end of the second arc-shaped air guide plate is connected to the air outlet. The air sucked by the fan is guided to the air inlet through the first arc-shaped air guide plate and enters the heat exchange cavity. The inside of the heat exchange cavity is in the air inlet. There is an arc-shaped windshield between the air inlet and the air outlet. The arc-shaped windshield pressurizes the air entering the air inlet so that part of it enters the main body of the photovoltaic inverter through the heat dissipation network for cooling. It passes through the second arc-shaped guide. The air plate guides the wind blown from the air outlet to the rectangular blades and spreads it out from the ventilation network, thereby improving the heat dissipation efficiency of the photovoltaic inverter body.

2. In this utility model, through the arrangement of rectangular blades, a plurality of rectangular blades are arranged at equal intervals on one side of the second arc-shaped air guide plate inside the heat dissipation device, and a rotating tube is fixedly connected to one side of each rectangular blade. The servo motor drives the worm to rotate. The worm gear in the middle of each rotating tube is meshed with multiple worm teeth provided on the worm. The rotation of the worm drives the rotating tube to rotate, opening each rectangular blade upward, allowing the hot air to flow through the ventilation The net spreads out, and when it rains, the worm rotates to drive the rotating tube to rotate, closing each rectangular blade downward to prevent rainwater from entering the main body of the photovoltaic inverter and causing a short circuit.

3. In this utility model, through the arrangement of the circular limiter and the limiter tube, the upper end of the worm is rotatably connected to the circular limiter. The upper end of the circular limiter is fixedly connected to the upper end of the heat dissipation device. The upper end of the outer frame of the servo motor A limit tube is provided on one side of the middle part. The lower end of the worm extends through the middle part of the limit tube to the inside of the outer frame of the servo motor and is fixedly connected with the first conical tooth. The stability of the worm rotation is maintained through the circular limit piece and the limit tube.

Description of the drawings

Figure 1 is a front view of a photovoltaic inverter of the present invention;

Figure 2 is a main cross-sectional view of the utility model;

Figure 3 is a top cross-sectional view of the utility model;

Figure 4 is an enlarged view of detail A of the present utility model.

In the picture: 1. Main body of photovoltaic inverter; 101. Heat dissipation network; 102. Heat exchange cavity; 103. Air inlet; 104. Air outlet; 105. Curved windshield; 2. Heat dissipation device; 201. Strip suction Air outlet; 202. Curved rain shield; 203. Ventilation net; 204. First curved wind deflector; 205. Second curved wind deflector; 206. Fixed baffle; 3. Fan outer frame; 301. Fan; 4. Rectangular blade; 401. Rotating tube; 402. Rotating shaft; 403. Worm gear; 5. Worm; 501. Worm gear; 502. Circular stopper; 503. First conical tooth; 6. Servo motor outer frame; 601. Limit tube; 602. Servo motor; 603. Second conical tooth.

Detailed ways

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only part of the embodiments of the present utility model, not all implementations. example.

Please refer to Figures 1-4. An embodiment provided by the present utility model: a photovoltaic inverter, including a photovoltaic inverter main body 1. A heat dissipation network 101 is provided inside the photovoltaic inverter main body 1. The heat dissipation network 101 and the photovoltaic inverter A heat exchange cavity 102 is provided between the internal rear end surfaces of the inverter body 1. An air inlet 103 is provided at the middle side of the internal rear end surface of the photovoltaic inverter body 1. The other side of the middle rear end surface of the photovoltaic inverter body 1 is provided. An air outlet 104 is provided, and a heat dissipation device 2 is provided at the rear end of the photovoltaic inverter body 1. A plurality of strip-shaped air suction outlets 201 are provided at equal intervals on one side of the heat dissipation device 2, and an arc is fixedly connected to the outside of each strip-shaped air suction outlet 201. A rain shield 202 is provided, a ventilation net 203 is provided on the other side of the heat dissipation device 2, a first arc-shaped air guide plate 204 is provided on one side of the middle part of the interior of the heat dissipation device 2, and a second arc-shaped air guide plate 204 is provided on the other side of the middle part of the interior of the heat dissipation device 2. A plurality of fan outer frames 3 are arranged at equal intervals on one side of the first arc-shaped air guide plate 204 inside the heat dissipation device 2. Fans 301 are arranged inside the fan outer frames 3. Inside the heat dissipation device 2, A plurality of rectangular blades 4 are arranged at equal intervals on one side of the two arc-shaped air guide plates 205. A rotating tube 401 is fixedly connected to one side of each rectangular blade 4. A rotating shaft 402 is connected to the middle of each rotating tube 401. A worm gear 403 is provided in the middle of the rotating tube 401, and a worm 5 is provided on one side of each worm wheel 403. A servo motor frame 6 is provided at the lower end of the second arc-shaped air guide plate 205, and a servo motor 602 is provided inside the servo motor outer frame 6. .

Furthermore, the photovoltaic inverter main body 1 is fixedly connected to the heat sink 2 , each arc-shaped rainshield 202 is fixedly connected to the heat sink 2 , and each fan frame 3 is fixedly installed inside the heat sink 2 .

Furthermore, the rear ends of the first arc-shaped air guide plate 204 and the second arc-shaped air guide plate 205 are fixedly connected to the internal rear end of the heat sink 2 .

Furthermore, the front end of the first arc-shaped air guide plate 204 is connected with the air inlet 103, and the front end of the second arc-shaped air guide plate 205 is connected with the air outlet 104. The air sucked by the fan 301 is guided to the inlet through the first arc-shaped air guide plate 204. The air outlet 103 enters the heat exchange cavity 102, and the second arc-shaped air guide plate 205 guides the wind blown out of the air outlet 104 to the rectangular blades 4 and spreads out from the ventilation mesh 203.

Furthermore, an arc-shaped windshield 105 is provided inside the heat exchange cavity 102 between the air inlet 103 and the air outlet 104. The arc-shaped windshield 105 pressurizes the air entering the air inlet 103 so that part of it enters through the heat dissipation net 101. The inside of the photovoltaic inverter main body 1 is cooled.

Furthermore, each worm gear 403 is fixedly connected to each rotating tube 401 respectively, the front and rear ends of each rotating shaft 402 are fixedly connected to the front and rear ends inside the heat sink 2, and each rotating tube 401 is rotationally connected to the rotating shaft 402, so that the rotating tube 401 can rotate through the rotating shaft 402.

Furthermore, a plurality of worm teeth 501 are arranged at equal intervals on the worm 5. The worm gear 403 in the middle of each rotating tube 401 is meshed with the teeth of the plurality of worm teeth 501 provided on the worm 5. The rotation of the worm 5 drives the rotating tube 401 to rotate. Rotation realizes the opening and closing of the rectangular blade 4.

Furthermore, a circular stopper 502 is rotatably connected to the upper end of the worm 5. The upper end of the circular limiter 502 is fixedly connected to the upper end of the heat sink 2. The circular limiter 502 maintains the stability of the rotation of the upper end of the worm 5.

Further, a limit tube 601 is provided on the middle side of the upper end of the servo motor outer frame 6. The lower end of the worm 5 passes through the middle of the limit tube 601 and extends to the inside of the servo motor outer frame 6 and is fixedly connected with a first conical tooth 503. Through the limit tube 601 maintains the stability of the rotation of the lower end of the worm 5.

Further, the output shaft of the servo motor 602 is fixedly connected with a second conical tooth 603. The first conical tooth 503 at the lower end of the worm 5 is meshed with the second conical tooth 603 on the output shaft of the servo motor 602, and the worm is driven by the servo motor 602. 5 rotates, and by controlling the rotation of the servo motor 602, the opening degree of each rectangular blade 4 is controlled.

Working principle: During use, multiple fans 301 inside the heat dissipation device 2 suck air from multiple strip-shaped air suction openings 201 on one side of the heat dissipating device 2. An arc-shaped rain shield 202 is provided outside each strip-shaped air suction opening 201 to prevent rainwater from entering. Inside, the air sucked by the fan 301 is guided to the air inlet 103 through the first arc-shaped air guide plate 204 and enters the heat exchange chamber 102. An arc-shaped baffle is provided inside the heat exchange chamber 102 between the air inlet 103 and the air outlet 104. The air plate 105 pressurizes the air entering the air inlet 103 through the arc-shaped wind shield 105 so that part of it enters the interior of the photovoltaic inverter body 1 through the heat dissipation network 101 for cooling. The air outlet is directed through the second arc-shaped air guide plate 205 The air blown out by 104 is directed to the rectangular blade 4. The output shaft of the servo motor 602 is fixedly connected with a second conical tooth 603. The first conical tooth 503 at the lower end of the worm 5 meshes with the second conical tooth 603 on the output shaft of the servo motor 602. connection, the servo motor 602 drives the worm 5 to rotate, the worm gear 403 in the middle of each rotating tube 401 is meshed with the plurality of worm teeth 501 provided on the worm 5, and the rotation of the worm 5 drives the rotating tube 401 to rotate. Each rectangular blade 4 opens upward to allow the hot air to escape through the ventilation network 203. When it rains, the worm 5 rotates to drive the rotating tube 401 to rotate. Each rectangular blade 4 is closed downward to prevent rainwater from entering the interior of the photovoltaic inverter body 1. causing a short circuit.

It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the appended claims rather than the above description, and it is therefore intended that all claims falling within the rights All changes within the meaning and scope of the required equivalents are included in the present invention. Any reference signs in the claims shall not be construed as limiting the claim in question.

Claims (10)

1. Photovoltaic inverter, comprising a photovoltaic inverter body (1), characterized in that: the photovoltaic inverter body (1) is internally provided with a heat dissipation net (101), be provided with heat exchange cavity (102) between heat dissipation net (101) and the inside rear end face of photovoltaic inverter body (1), middle part one side of the inside rear end face of photovoltaic inverter body (1) is provided with air intake (103), middle part opposite side of the inside rear end face of photovoltaic inverter body (1) is provided with air outlet (104), photovoltaic inverter body (1) rear end is provided with heat abstractor (2), equidistant a plurality of bar-shaped air inlets (201) that are provided with in heat abstractor (2) one side, every equal fixedly connected with arc rain fender (202) in bar-shaped air inlet (201) outside, heat abstractor (2) opposite side is provided with ventilation net (203), middle part one side of heat abstractor (2) inside is provided with first arc aviation baffle (204), the inside middle part opposite side of heat abstractor (2) is provided with second arc aviation baffle (205), heat abstractor (2) inside is provided with a plurality of rectangle aviation baffle (204) equidistant one side, a plurality of rectangle (3) are provided with fan (301) in first arc-shaped air baffle (2) inside, fan (3) are equidistant fan (301) inside each other side, every rectangle blade (4) one side all fixedly connected with rotates pipe (401), every the inside middle part of rotation pipe (401) is connected with pivot (402), every it all is provided with worm wheel (403) to rotate pipe (401) middle part, every worm wheel (403) one side is provided with worm (5) jointly, second arc aviation baffle (205) lower extreme is provided with servo motor frame (6), servo motor frame (6) inside is provided with servo motor (602).

2. A photovoltaic inverter according to claim 1, characterized in that: the photovoltaic inverter is characterized in that the photovoltaic inverter main body (1) is fixedly connected with the heat dissipation device (2), each arc-shaped rain shield (202) is fixedly connected with the heat dissipation device (2), and each fan outer frame (3) is fixedly arranged inside the heat dissipation device (2).

3. A photovoltaic inverter according to claim 1, characterized in that: the rear ends of the first arc-shaped air deflector (204) and the second arc-shaped air deflector (205) are fixedly connected with the rear end inside the heat dissipation device (2).

4. A photovoltaic inverter according to claim 3, characterized in that: the front end of the first arc-shaped air deflector (204) is communicated with the air inlet (103), and the front end of the second arc-shaped air deflector (205) is communicated with the air outlet (104).

5. A photovoltaic inverter according to claim 1, characterized in that: an arc-shaped wind shield (105) is arranged between the air inlet (103) and the air outlet (104) in the heat exchange cavity (102).

6. A photovoltaic inverter according to claim 1, characterized in that: each worm wheel (403) is fixedly connected with each rotating pipe (401), the front end and the rear end of each rotating shaft (402) are fixedly connected with the front end and the rear end of the inside of the heat radiating device (2), and each rotating pipe (401) is rotatably connected with the rotating shaft (402).

7. A photovoltaic inverter according to claim 1, characterized in that: a plurality of worm teeth (501) are arranged on the worm (5) at equal intervals, and the middle worm wheel (403) of each rotating tube (401) is respectively connected with the tooth parts of the plurality of worm teeth (501) arranged on the worm (5) in a meshed mode.

8. A photovoltaic inverter according to claim 1, characterized in that: the upper end of the worm (5) is rotationally connected with a circular limiting part (502), and the upper end of the circular limiting part (502) is fixedly connected with the upper end inside the heat radiating device (2).

9. The photovoltaic inverter of claim 8, wherein: a limiting pipe (601) is arranged on one side of the middle of the upper end of the outer servo motor frame (6), and the lower end of the worm (5) penetrates through the middle of the limiting pipe (601) and extends to the inside of the outer servo motor frame (6) and is fixedly connected with first conical teeth (503).

10. A photovoltaic inverter according to claim 9, characterized in that: the output shaft of the servo motor (602) is fixedly connected with second conical teeth (603), and the first conical teeth (503) at the lower end of the worm (5) are connected with the teeth of the second conical teeth (603) on the output shaft of the servo motor (602) in a meshed mode.