KR101149970B1 - Cleanning and cooling system for solar photovoltaic power generation deivce - Google Patents

Abstract

PURPOSE: A washing and cooling system of a photovoltaic power generation apparatus is provided to improve power generation efficiency of a photovoltaic module by cooling the photovoltaic module while cleaning the surface of the photovoltaic module. CONSTITUTION: A rail unit(40) is installed on the uppermost part of a support frame(10). The rail unit comprises a fixed bracket(42) which is fixed to the upper side of a support leg(12). A nozzle unit sprays a cleansing solution and a coolant to a photovoltaic module(20). A height control unit vertically transfers the nozzle unit. A spray angle control unit controls a spray angle of the nozzle unit.

Description

CLEANNING AND COOLING SYSTEM FOR SOLAR PHOTOVOLTAIC POWER GENERATION DEIVCE

The present invention relates to a washing and cooling system for a photovoltaic device that can simultaneously cool the surface of the photovoltaic module and thus improve the photovoltaic power generation efficiency.

In general, concerns about energy depletion have led to the development of various types of alternative energy sources that can replace fossil fuels, one of which is solar energy. The use of such solar energy can be divided into two types, one of which uses the solar radiation to perform heating and the like, and one that converts the solar energy directly into electricity using solar cells. There is a generator.

The photovoltaic device includes a frame installed on a roof or ground of a building, a solar module installed at an angle to the frame to convert solar energy into electrical energy, and a direct current power generated by the solar module to load an electronic device. It consists of an inverter and the like to convert to the AC power required for.

The development of photovoltaic devices is being promoted in order to develop technologies for increasing the power generation efficiency of photovoltaic modules.

Therefore, a solar generator cleaning and cooling system for cleaning and cooling the surface of the solar module in order to increase the power generation efficiency of the solar module is disclosed in Korean Patent Publication No. 10-0982263.

Conventional photovoltaic washing and cooling system disclosed in Korean Patent Application Publication No. 10-0982263 includes a solar power generator provided with a light collecting plate having a light collecting angle that changes according to a solar position, ambient air temperature and air pollution, temperature of the light collecting plate surface, Sensor unit for detecting the ambient air pollution of the surroundings, the temperature of the water in the water supply pipe, the wind speed and wind direction of the surroundings, the flow pressure of the water supplied to the water supply pipe, and the surface temperature of the light collecting plate to rise above the set temperature compared to the ambient air temperature And a water supply signal to the operation unit when the external air pollution around the light collecting plate rises above a predetermined reference value, and transmits a water drainage signal to the operation unit when the outside temperature becomes lower than a temperature for freezing water in the water supply pipe. When the wind around the light collecting plate is higher than the set wind speed, or the reverse direction of water sprayed onto the light collecting plate surface When the wind blows, the control unit for transmitting the water supply cutoff signal to the operation unit, and when the water supply signal is transmitted from the control unit, the water stored in the water storage tank is supplied to the water injection unit, the water drainage signal is transmitted from the control unit If so, the water in the water supply pipe is discharged to the outside, and when the water supply block signal is transmitted, it is composed of an operation unit for blocking the water supply.

However, the conventional solar generator cleaning and cooling system as described above requires a large number of spray nozzles in order to spray water on the entire surface of the light collecting plate when the area of the light collecting plate is wide because the water injection unit for spraying water to the light collecting plate is fixed. The manufacturing cost is increased, and the spray angle of the spray nozzle is fixed, so that water is not evenly sprayed on the surface of the light collecting plate.

In addition, the conventional solar generator cleaning and cooling system has a problem that the cleaning efficiency is lowered when cleaning the light collecting plate because it sprays water at the same pressure in the spray nozzle when washing and cooling the light collecting plate.

Patent Application Publication 10-0982263

Accordingly, an object of the present invention is to provide a cleaning and cooling system for a photovoltaic device that can cool the photovoltaic module at the same time as cleaning the surface of the photovoltaic module to improve power generation efficiency.

Another object of the present invention is to provide a washing and cooling system for a photovoltaic device that can cool the surface of a wide photovoltaic module and cool it by adjusting the spray angle of the nozzle unit for spraying the washing liquid and the cooling liquid.

Another object of the present invention is to wash the photovoltaic device that can improve the washing efficiency and cooling efficiency while performing the washing and cooling at the same time by different injection pressure when washing and cooling the solar module, respectively; It is to provide a cooling system.

Another object of the present invention is provided with a height adjustment unit for moving the nozzle unit for spraying the washing liquid and the cooling liquid up and down, the height adjustment unit is separately used to adjust the height of the nozzle unit by using water sprayed to the nozzle unit It is to provide a cleaning and cooling system of the solar power generation apparatus is unnecessary.

It is to be understood that both the foregoing general description and the following detailed description of the present invention are exemplary and explanatory and are intended to provide further explanation of the invention as claimed. .

In order to achieve the above object, the washing and cooling system of the photovoltaic device of the present invention is provided with a rail unit which is installed at the highest position of the frame inclined so as to mount the photovoltaic module, and is movable to the rail unit A trolley, a nozzle unit installed on the trolley and spraying a washing liquid and a cooling liquid on the solar module to wash and cool the solar module, and a height adjusting unit installed on the trolley to raise and lower the nozzle unit in a vertical direction. The height adjusting unit may include a first cylinder having a chamber in which a support shaft supporting the nozzle unit is liftably inserted and filled with liquid, and a lift shaft connected to the nozzle unit is liftably inserted and liquid inside. And a second cylinder 84 having a chamber filled therein.

The washing and cooling system of the solar cell apparatus of the present invention further includes a spraying angle adjusting unit for adjusting the spraying angle of the nozzle unit, wherein the spraying angle adjusting unit has an operation rod having one end connected to the nozzle unit; A support shaft rotatably supporting the center of the operating rod, a lifting shaft hinged to the other end of the operating rod to reciprocate the other end of the operating rod in the vertical direction, and a second drive for the reciprocating movement of the lifting shaft in the vertical direction. It characterized in that it comprises a device.

The nozzle unit of the present invention has a nozzle body, a cooling nozzle installed in the nozzle body to spray a cooling liquid when cooling the photovoltaic module, and installed in the nozzle body to spray a cleaning liquid when the photovoltaic module is washed and the cooling It characterized in that it comprises a cleaning nozzle having a large injection pressure compared to the injection pressure of the nozzle.

The second drive device of the present invention is a second drive motor is installed in the bogie to generate a driving force, a drive pulley fixed to the drive shaft of the second drive motor, a drive shaft and fixed to the rotating shaft rotatably mounted on the bogie And a cam member fixed to the rotating shaft, the cam member being rotated together with the driven pulley, and a roller connected to the lower surface of the lifting shaft and rolling along the outer surface of the cam member at the end thereof.

The washing and cooling system of the photovoltaic device of the present invention further includes a purifying system that collects, purifies, and reuses water once used for cooling and washing, and the purifying system is installed on the side of the frame having the lowest height. And a plurality of purification tanks which are sprayed onto the surface of the solar module to collect the water which has been cleaned or cooled, and a plurality of purification tanks connected to the collection tanks and the discharge pipes to gradually purify the water collected in the collection tanks. Characterized in that.

The washing and cooling system of the photovoltaic device of the present invention automatically detects when dust accumulates on the surface of the photovoltaic module and automatically performs the cleaning mode. The control unit further comprises a dust detection sensor for detecting dust accumulated on the surface of the photovoltaic module, a temperature sensor for measuring the temperature of the photovoltaic module, and applied from the dust detection sensor and the temperature sensing sensor. And a controller for operating the cleaning and cooling system in accordance with the signal.

As described above, the cleaning and cooling system of the photovoltaic power generation system of the present invention has the advantage of being able to cool the photovoltaic module while simultaneously cleaning the surface of the photovoltaic module, thereby improving power generation efficiency.

In addition, the washing and cooling system of the photovoltaic device of the present invention has the advantage that it can evenly cool the surface of the wide solar module by adjusting the spraying angle of the nozzle unit for spraying the cleaning liquid and cooling liquid.

In addition, the washing and cooling system of the photovoltaic device of the present invention has the advantage that it is possible to improve the washing efficiency and cooling efficiency while performing the washing and cooling at the same time by different injection pressure when washing and cooling. have.

In addition, the washing and cooling system of the photovoltaic device of the present invention is provided with a height adjusting unit for moving the nozzle unit for spraying the washing liquid and cooling liquid up and down, by using the water sprayed to the nozzle unit, There is an advantage that a separate driving device is unnecessary to adjust the height of the nozzle unit.

1 is a perspective view of a photovoltaic device according to an embodiment of the present invention.
2 is a side view of a photovoltaic device according to an embodiment of the present invention.
3 is a cross-sectional view of one side of the cleaning and cooling system according to an embodiment of the present invention.
Figure 4 is a cross-sectional view of the other side of the cleaning and cooling system according to an embodiment of the present invention.
5 is a cross-sectional view of a cleaning and cooling system according to another embodiment of the present invention.
6 is a block diagram showing a water supply device and a water purification device according to an embodiment of the present invention.
Figure 7 is a block diagram showing a control unit of the washing and cooling system according to an embodiment of the present invention.
8 is a cross-sectional view of a washing and cooling system according to a second embodiment of the present invention.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. In this process, the size or shape of the components shown in the drawings may be exaggerated for clarity and convenience of description. In addition, terms that are specifically defined in consideration of the configuration and operation of the present invention may vary depending on the intention or custom of the user or operator. Definitions of these terms should be made based on the contents throughout the specification.

1 is a perspective view of a photovoltaic device according to an embodiment of the present invention, Figure 2 is a side view of the photovoltaic device according to an embodiment of the present invention, Figure 3 is a washing and according to an embodiment of the present invention 4 is a cross-sectional view of a cooling system, and FIG. 4 is a side view of a cleaning and cooling system according to one embodiment of the present invention.

Washing and cooling system 30 according to an embodiment is a rail unit 40 is installed on one side of the highest position of the height of the support frame 10, and the trolley (movable to the rail unit 40) 50) and a nozzle unit (60) installed in the cart (50) to wash and cool the solar module (20) by spraying a washing liquid or cooling liquid on the solar module (20), and the nozzle (50) is installed in the nozzle (50). It includes a spraying angle adjusting unit 70 for adjusting the spraying angle of the unit 60, and a height adjusting unit 80 is installed in the cart 50 to adjust the height of the nozzle unit 60.

The rail unit 40 has a fixing bracket 42 fixed to the upper side of the support leg 12, a housing 44 formed to have an internal space in the fixing bracket 42, and the upper surface of the housing 44 on both sides. It includes a pair of rails 46 formed.

The trolley 50 is installed to be movable on the upper surface of the rail 46 and moves along the rail 46. The left and right sides are rotatably installed on the lower surface of the trolley 50 and moved along the rail 46. The wheels 52 and 54, a rotation shaft 56 connecting between the left and right wheels, and a first driving device 90 connected to the rotation shaft 56 to drive the cart 50.

The first driving device 90 is fixed to the lower surface of the trolley 50 and moved together with the trolley 50 to generate a driving force, and the drive shaft 91 of the first driving motor 92. Between the first sprocket 94 mounted on the rotating shaft 56 and the second sprocket 96 fixed to the rotation shaft 56 and having a different gear ratio from the first sprocket 94 and the second sprocket 94; And a chain 98 wound up.

In this case, when the first driving motor 92 is driven, the first sprocket 94 is rotated, and the second sprocket 96 connected to the first sprocket 94 and the chain 98 is rotated. Then, as the rotary shaft 56 on which the second sprocket 96 is fixed is rotated, the wheels 52 and 54 rotate so that the cart 50 linearly moves on the rail 46.

The nozzle unit 60 is installed in the nozzle body 66, the nozzle body 66, the cleaning nozzle 62 for spraying the cleaning liquid onto the surface of the solar module 20, and the nozzle body 66 is installed in the sun It consists of a cooling nozzle 64 which injects a cooling liquid to the surface of the optical module 20.

When cleaning the photovoltaic module 20, dust or foreign matter accumulated on the surface of the photovoltaic module 20 should be removed, so the injection pressure should be high, and when cooling the photovoltaic module 20, the photovoltaic module 20 Since spraying water for cooling to the surface of the spray pressure is low and the cooling liquid is evenly sprayed on the entire surface of the solar module.

Therefore, the cleaning nozzle 62 is applied to a nozzle that can be injected far while the injection pressure is high, the cooling nozzle 64 is applied to a nozzle that can be widely sprayed while the injection pressure is low. Of course, it is also possible to perform washing and cooling at the same time by adjusting the injection pressure using one nozzle.

The coolant and the wash liquid may also use the same liquid, the wash liquid may include a substance capable of improving the washing performance, and the coolant may use different liquids containing the substances required for cooling.

The injection angle adjusting unit 70 is coupled to the operation rod 72 having one end connected to the nozzle body 66 and a hinge pin 74 at the center side of the operation rod 72 so that A support shaft 76 rotatably supporting the center side and a lifting shaft coupled to the other end of the operation rod 72 by a hinge shaft 78 to elevate the other end of the operation rod 72 in the vertical direction. And a second driving device 110 for reciprocating the lifting shaft 102 in the vertical direction.

A slot 100 is formed at the other end of the actuating rod 72 and the hinge shaft 78 is moved along the slot so that the other end of the actuating rod 72 is not disturbed when it is rotated in an arc shape. .

The height adjusting unit 80 adjusts the height of the nozzle unit 60 by elevating the support shaft 76 and the lifting shaft 102 in the up and down direction, respectively, and the support shaft 76 is inserted and lifted to the bogie ( A first cylinder 82 having a chamber 104 fixed to an upper surface of the upper surface 50 and filled with a liquid therein; and a chamber 106 into which the lifting shaft 102 is liftably inserted in a vertical direction and filled with liquid therein; And a second cylinder 84 having

The first cylinder 82 is connected to the first line 130 for supplying and discharging liquid into the chamber 104, and the second cylinder 84 is for supplying and discharging liquid into the chamber 106. Line 132 is connected.

At the end of the support shaft 76, the first piston 86 is mounted and moved in close contact with the inner wall of the first cylinder 82, and is disposed between the first piston 86 and the upper inner surface of the first cylinder 82. The first spring 134 is installed to provide an elastic force to the first piston (86).

The second piston 84 is installed at the end of the lifting shaft 102 and moved in close contact with the inner wall of the second cylinder 84, and the sealing member 136 is mounted on the upper inner surface of the second cylinder 84. To maintain the airtight inside the second cylinder 84.

A cylindrical case 140 is installed on an outer circumferential surface of the second cylinder 84, and an upper surface of the case 140 is opened to pass the second cylinder 84 to move up and down, and with an upper inner surface of the case 140. A second spring 142 is installed between the spring sheets 144 protruding from the outer circumferential surface of the second cylinder 84 to provide an elastic force to the second cylinder 84.

A second driving device 110 for reciprocating the lifting shaft 102 up and down is connected to the bottom surface of the second cylinder 84. Here, the second driving device 110 is installed in the cart 50, the second drive motor 112 for generating a driving force, and the drive pulley 128 is fixed to the drive shaft 114 of the second drive motor 112. ), A driven pulley 120 fixed to the rotary shaft 118 rotatably mounted to the trolley 50 and wound around the drive pulley 128 and the belt 116, and a driven pulley fixed to the rotary shaft 118 ( The cam member 122 rotates as shown in FIG. 120, and a roller 124 connected to the lower surface of the second cylinder 84 and rolled along the outer surface of the cam member 122 at an end thereof.

5 is a cross-sectional view of a washing and cooling system according to another embodiment of the present invention, which is the same as the washing and cooling system described in the above embodiment, except that the nozzle unit is disposed on the left and right sides of the support shaft 102, respectively. 60 has a structure provided.

According to another embodiment of the washing and cooling system, a support shaft 102 is disposed on an upper surface of the trolley 50, and a pair of nozzle units 60 are provided on both sides of the support shaft 102, so Washing liquid and cooling liquid can be sprayed in both directions.

6 is a block diagram showing a water supply device and a purification system according to an embodiment of the present invention.

In this embodiment, a purification system is used that collects, purifies and reuses water once used for washing and cooling.

The purification system includes a collection tank 150 which is installed on the side of the lowest height of the frame 10 and sprayed onto the surface of the solar module 20 to collect the water which has been cleaned or cooled, and the collection tank ( And a plurality of purification tanks 152, 154, and 156 connected to the discharge pipe 158 to gradually purify the water collected in the collection tank 150.

Purification tank is installed in the collection tank 150, the mesh member 164 is installed on the upper surface to filter the floating matter, such as fallen leaves and garbage introduced into the collection tank 150, the first foreign matter contained in the water The first purification tank 152 to purify, the second purification tank 154 connected to the upper surface of the first purification tank 152 and the first pipe 160, the first purified water flows in and the second purified water And a third purification tank 156 connected to the upper surface of the second purification tank 154 and the second pipe 162 to purify the water in a third order.

As such, the washing and cooling system according to the present embodiment can save water because the used water is recycled, and keep the surrounding environment of the washing and cooling system clean.

The water supply device includes a pump 180 connected to the third purification tank 156 to pump water and a first line connected to the main line 182 to which the pump is connected to supply water to the first cylinder 82. 130, a second line 132 connected to the main line 182 to supply water to the second cylinder 84, and a third line connected to the pump 180 to supply water to the washing nozzle 62. A fourth line 184 connected to the line 186, a pump 180, and supplying water to the cooling nozzle 64, and branched from the main line 182 to the first cylinder 82 and the second cylinder ( 84, the drain line 188 is discharged to the outside.

In addition, a first valve 190 for opening and closing the third line 186 is installed in the third line 186, and a second valve 192 for opening and closing the fourth line 184 in the fourth line 184. And a third valve 194 for opening and closing the main line 182 is installed in the main line 182, and a fourth valve 196 for opening and closing the drain line 188 is installed in the drain line 188. do.

As described above, referring to the operation of the water supply device, when the nozzle unit 60 is raised, the pump 180 is driven and when the third valve 194 is opened, the water passes through the main line 182. The line 130 and the second line 132 are supplied to the chamber 104 of the first cylinder 82 and the chamber 106 of the second cylinder 84.

The first piston 86 and the second piston 84 then overcome the elastic force of the first spring 134, are lifted by hydraulic pressure, and the support shaft 76 and the lifting shaft 102 are raised accordingly to the nozzle unit. Raise 60.

When the raising of the nozzle unit 60 is completed, the third valve 194 is closed to maintain the nozzle unit 60 in a raised state.

When the nozzle unit 60 is lowered, when the fourth valve 196 is opened, the water filled in the chamber 104 of the first cylinder 82 and the chamber 106 of the second cylinder 84 is drained. 188 is discharged to the outside, the support shaft 76 and the lifting shaft 102 is lowered by the elastic force of the first spring 134.

When the solar module 20 is washed, the first valve 190 is opened to supply water to the washing nozzle 62, and when the solar module 20 is cooled, the second valve 192 is opened. The water is supplied to the cooling nozzle 64.

Here, the valve structure is also applicable to a three-way valve for controlling the line by tying the valves together to switch ports.

As such, the cleaning and cooling system according to the embodiment is configured to automatically detect the dust when accumulated on the surface of the photovoltaic module 20 to perform the cleaning mode, the temperature of the photovoltaic module 20 is higher than the set temperature When the control unit is automatically provided to perform the cooling mode.

As shown in FIG. 7, the control unit includes a dust sensor 210 for detecting dust accumulated on the surface of the solar module 20, and a temperature sensor 220 for measuring the temperature of the solar module 20. And a controller 200 for operating the cleaning and cooling system according to the signals applied from the dust sensor 210 and the temperature sensor 220.

The dust sensor 220 is a sensor that detects the stacking degree of dust accumulated on the surface of the photovoltaic module 20 and applies the signal to the controller 200, and can detect any stacking degree of dust such as an optical sensor. Sensors can also be applied.

Next, the operation of the washing and cooling system of the solar cell apparatus according to the present embodiment will be described in detail.

First, when dust is accumulated on the surface of the solar module 20, when the dust sensor 210 detects the dust accumulated on the surface of the solar module 20 and applies the signal to the controller 200, the controller 200 ) Operates the cleaning system when it is determined that the measured value is greater than or equal to the set value by comparing the measured value applied from the dust sensor 210 with the set value.

In the following, the operation of the cleaning system will be described in detail.

The controller 200 opens the first valve 190 and the third valve 194 and operates the hydraulic pump 180. When the third valve 194 is opened, the water pumped by the hydraulic pump 180 is supplied to the main line 182, and the water is supplied into the first cylinder 82 through the first line 130. Water is supplied into the second cylinder 84 through the second line 132.

Then, the hydraulic pressure is generated in the first cylinder 82 and the second cylinder 84 inside the support shaft 76 and the lifting shaft 102 is raised, the nozzle unit 60 is raised.

When the first valve 190 is opened, the third line 186 is opened to supply water to the washing nozzle 62, and sprays the washing liquid from the washing nozzle 62 to the surface of the solar module 20. Sweep away the accumulated dust. Here, since the washing nozzle 62 has a high injection pressure, it is possible to sufficiently remove the dust accumulated in the solar module 20.

In this state, when the controller 200 drives the first driving motor 92, the rotating shaft 56 connected to the first driving motor 92 is rotated, and the wheels 52 and 54 fixed to the rotating shaft 56 are rotated. Rotates the cart 50 to move.

As such, since the trolley is linearly moved, water is sprayed onto the surface of the photovoltaic module 20 so that the cleaning nozzle 62 may be one or two, thereby reducing manufacturing costs.

The controller 200 drives the second driving motor 112. Then, the cam member 122 connected to the second driving motor 112 is rotated, and the roller 124 rolled up and down along the outer circumferential surface of the cam member 122 is repeatedly lifted up and down. Accordingly, the push rod 126 to which the cam member 124 is connected reciprocates in the vertical direction, and the lifting shaft 102 to which the push rod 126 is connected is reciprocated.

Then, the operation rod 72 is moved up and down about the support shaft 76 to reciprocate the nozzle unit 60 in the vertical direction.

In this way, since the nozzle unit 60 is reciprocated in the vertical direction, the irradiation angle of the washing nozzle 62 is adjusted to evenly spray the washing liquid near the washing nozzle 62 and the portion away from the washing nozzle 62. This allows more effective cleaning of the solar modules.

When the temperature of the photovoltaic module 50 is greater than or equal to the set temperature, the controller 200 detects the temperature of the photovoltaic module 50 and applies the signal to the controller 200. The controller operates the cooling system when it is determined that the measured value is greater than or equal to the set value by comparing the measured value applied from the temperature sensor 220 with the set value.

Referring to the operation of the cooling system, the controller 200 opens the second valve 192 and the third valve 194 and operates the hydraulic pump 180. When the third valve 194 is opened, water is supplied to the first cylinder 82 and the second cylinder 84 to raise the support shaft 76 and the lifting shaft 102 to raise the nozzle unit 60.

When the second valve 192 is opened, water is supplied to the cooling nozzle 64 through the fourth line 184 to supply cooling water to the surface of the solar module 20. At this time, since the cooling nozzle 64 is sprayed with a low injection pressure and spread widely, the cooling water is evenly sprayed on the surface of the solar module.

As described above, the controller 200 drives the bogie 50 by driving the first drive motor 92 and drives the nozzle unit 60 in the vertical direction by driving the second drive motor 112. The reciprocating movement allows the coolant to be evenly sprayed from the near to the far away from the cooling nozzle 64.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is clearly understood that the same is by way of illustration and example only and is not to be construed as limited to the embodiments set forth herein. Various changes and modifications may be made by those skilled in the art.

10: support frame 12: support rod
20: solar module 30: cleaning / cooling system
40: rail unit 44: housing
46: rail 50: bogie
52, 54: Wheel 56: axis of rotation
60: nozzle unit 62: cleaning nozzle
64: cooling nozzle 66: nozzle body
70: injection angle adjustment unit 72: operating rod
76: support shaft 80: height adjustment unit
82: first cylinder 84: second cylinder
86: first piston 88: second piston
90: first drive device 92: first drive motor
94: first sprocket 96: second sprocket
98: chain 102: lifting shaft
110: second drive device 112: second drive motor
120: driven pulley 122: cam member
124: roller 126: push rod
128: drive pulley 180: hydraulic pump
200: controller 210: dust detection sensor
220: temperature sensor

Claims (8)

A rail unit installed at the highest position of the frame inclined to mount the solar module;
A trolley mounted to the rail unit to be movable;
A nozzle unit installed on the trolley to clean and cool the solar module by spraying a washing solution and a cooling solution on the solar module;
A height adjusting unit installed on the trolley to lift the nozzle unit in a vertical direction;
The height adjusting unit may include a first cylinder having a chamber in which a support shaft supporting the nozzle unit is liftably inserted and filled with liquid, and a lifting shaft connected to the nozzle unit is inserted in a liftable manner and liquid is inserted into the inside. Cleaning and cooling system of a photovoltaic device comprising a second cylinder (84) having a chamber to be filled. The method of claim 1,
Further comprising a spraying angle adjusting unit for adjusting the spraying angle of the nozzle unit,
The spraying angle adjusting unit has an operating rod having one end connected to the nozzle unit, a support shaft rotatably supporting the center of the operating rod, and a hinge connected to the other end of the operating rod to vertically move the other end of the operating rod. And a second driving device for reciprocating the lifting shaft in the vertical direction, and a lifting shaft for reciprocating the air shaft. The method of claim 1,
The bogie includes a bogie on which wheels contacting the rail are mounted, and a first driving device for driving the bogie so that the bogie moves along the rail,
The first driving device includes a first driving motor fixed to the trolley, a first sprocket fixed to a drive shaft of the first driving motor, a second sprocket fixed to a rotating shaft to which the wheel is connected, and a first sprocket and a first driving motor. Cleaning and cooling system for photovoltaic devices with chains connected between two sprockets. The method of claim 1,
The nozzle unit comprises a nozzle body,
A cooling nozzle installed in the nozzle body to spray a coolant when cooling the solar module;
And a cleaning nozzle installed in the nozzle body to spray the cleaning liquid when the solar module is washed and having a large spray pressure compared to the spray pressure of the cooling nozzle. The method of claim 2,
The second driving device is a second driving motor which is installed in the cart to generate a driving force,
A drive pulley fixed to the drive shaft of the second drive motor, a driven pulley fixed to the rotating shaft rotatably mounted to the bogie and wound around the drive pulley and the belt,
A cam member fixed to the rotary shaft and rotated like a driven pulley;
And a roller connected to a lower surface of the elevating shaft and having a roller rolling at an end thereof along the outer surface of the cam member. The method of claim 4, wherein
The washing and cooling system further includes a purification system for collecting and purifying water once used for cooling and washing, and then reusing it.
The purification system is installed on the side of the lowest height of the frame is sprayed on the surface of the photovoltaic module is collected in the collection tank to complete the cleaning or cooling action, the collection tank and the discharge pipe connected to the collection tank A cleaning and cooling system of a photovoltaic device, comprising a plurality of purification tanks for purifying the collected water in stages. The method of claim 1,
The cleaning and cooling system further includes a control unit that automatically detects when dust accumulates on the surface of the photovoltaic module and automatically performs a cooling mode. Washing and cooling system of a photovoltaic device. The method of claim 7, wherein
The control unit includes a dust sensor for detecting dust accumulated on the surface of the photovoltaic module, a temperature sensor for measuring the temperature of the photovoltaic module, and a cleaning and cooling system according to signals applied from the dust sensor and the temperature sensor. Cleaning and cooling system of a photovoltaic device comprising a controller for operating the.

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