KR20130007069A - Cooling and cleaning apparatus of photovoltaic power generation - Google Patents

Abstract

PURPOSE: A cooling and cleaning device of a photovoltaic power generating system is provided to prevent the overheat of a photovoltaic module by including a temperature sensor around a panel of the photovoltaic module. CONSTITUTION: A photovoltaic module generates electricity by receiving sunlight. A plurality of spray nozzles(20) cleans foreign materials on the photovoltaic module. A reciprocating member(30) fixes the plurality of spray nozzles and reciprocates on the surface of the photovoltaic module. A power transmitting member(80) provides power to the reciprocating member. [Reference numerals] (16) Control unit

Description

COOLING AND CLEANING APPARATUS OF PHOTOVOLTAIC POWER GENERATION}

The present invention relates to a cooling and cleaning device for a photovoltaic power generation system, and more particularly, to selectively spray air or a cleaning fluid on the surface of a photovoltaic module to maintain the surface of the photovoltaic module in a clean state to generate solar power. The present invention relates to a cooling and cleaning device for a photovoltaic system for improving efficiency.

In general, a method of using solar heat is classified into a method of accumulating solar heat and a method of converting sunlight into electricity.

The method of using solar heat is to use the water warmed by the sun to heat or use it as an energy source for power generation. The method of using solar power generates electricity using the light of the sun and charges or supplies this electricity directly. Photovoltaic power generation is a way to operate a variety of machinery and equipment.

The above-mentioned photovoltaic power generation uses a photovoltaic effect, in which photovoltaic effects are generated when electrons are generated by electron-holes due to light energy when solar light is irradiated to a pn junction photovoltaic panel with n-type doping on a silicon crystal. To generate electricity.

To this end, a solar cell for condensing sunlight, a photovoltaic module which is a collection of solar cells, and a solar array in which the solar cells are constantly arranged are required.

Meanwhile, the efficiency of the photovoltaic module used in the photovoltaic power generation system is the most important factor that determines the economic feasibility of photovoltaic power generation in the range of about 16-18% of polycrystalline silicon material which is currently mainstream. Continuous maintenance is required to maintain working power generation efficiency.

However, since solar cells, photovoltaic modules, and photovoltaic arrays (hereinafter referred to as photovoltaic modules) for condensing sunlight are installed outdoors, they are exposed to the outside environment and are scattered in dust, algae, yellow dust and other pollutants. It adheres to this surface and thereby has a problem that the amount of condensing is lowered and the power generation efficiency is lowered.

In particular, in winter, snow accumulates on the solar module, and the amount of light collected is reduced, and power generation efficiency is lowered as described above.

Furthermore, when exposed to sunlight for a long time, the temperature rises, thereby reducing the electromotive force, thereby reducing the power generation efficiency.

Therefore, in recent years, in order to solve such a problem, an efficiency improving device of a photovoltaic power generation facility has been used, and in such a device, a brush method for cleaning the surface of the photovoltaic module by rotating the brush with mechanical power, and spraying water from a water hose Water hose spray method for cleaning the solar module, nozzle spray method for cleaning the solar module by spraying high pressure water through the nozzle.

The above-mentioned invention means the background art of the technical field to which the present invention belongs, and does not mean the prior art.

However, the conventional brush method has a disadvantage in that a separate brush suitable for the solar module is manufactured separately and cannot be cooled when the solar module is overheated. The water hose spraying method uses water through gravity to flow water through the water hose to remove dirt. The nozzle spray method requires a large number of nozzles when the area of the solar module is large, requires expensive equipment costs, and maintains a large number of nozzle water pressures required for cooling and cleaning. There is a problem in that the operating cost increases due to the increased water consumption.

Therefore, there is a need to improve this.

The present invention has been created by the necessity as described above, by selectively spraying air or cleaning fluid with the injection nozzle provided in the reciprocating member moving along the surface of the solar module to maintain the surface of the solar module in a clean state It is an object of the present invention to provide a cooling and cleaning apparatus for a photovoltaic system that improves the power generation efficiency of photovoltaic cells.

In order to achieve the above object, a cooling and cleaning apparatus of a solar power system according to an embodiment of the present invention, a solar module for generating electricity by receiving sunlight; A plurality of injection nozzles for cooling or cleaning the surface by supplying at least one of air, water, and a cleaning liquid to the foreign matter on the solar module through a connection pipe; A reciprocating member reciprocating to the entire surface of the photovoltaic module while fixing the plurality of injection nozzles; And a power transmission member providing power to the reciprocating member, wherein the solar module and the reciprocating member are installed to be inclined.

In addition, the reciprocating member is fixed plate material for fixing the injection nozzle; Rollers provided at both sides of the fixed plate member; Guide rails provided on both sides of the photovoltaic module to wind the gaps to guide the movement of the rollers; And it characterized in that it comprises a support member for supporting the guide rail.

In addition, the fixed plate member is characterized in that the injection nozzle is disposed on the bottom surface at a predetermined interval is provided with a pressure equalizing chamber for supplying the air, water, and the cleaning liquid supplied through the connecting pipe at equal pressure to each injection nozzle.

In addition, the connecting pipe is installed in the three-way valve is characterized in that for selectively supplying the air supplied from the air supply to the injection nozzle.

In addition, a water storage tank or a cleaning liquid storage tank for supplying water or a cleaning liquid to the connecting pipe is provided on one side of the reciprocating member, and the water or cleaning liquid storage tank is provided to the mixing tank storage tank through the first and second pumps. Each of the mixing tank storage tanks is supplied and mixed with water supplied from the water storage tank and the cleaning liquid storage tank and the cleaning liquid at a predetermined ratio.

In addition, the mixing tank storage tank is provided with a third pump is characterized in that for supplying the cleaning nozzle in which a mixing ratio of water and the cleaning liquid in the mixing tank storage tank to the injection nozzle.

In addition, the third pump is characterized in that the vibrator pump for spraying while vibrating the cleaning agent is injected to the solar module through the injection nozzle.

In addition, a temperature sensor for sensing a temperature is installed around the solar module to operate the first, second and third pumps and the power transmission member in a controller to cool the surface of the solar module, and When the power generation efficiency is lowered by installing a light amount sensor that detects the light amount, the module operates the first, second and third pumps and the power transmission member to clean the surface of the solar module.

As described above, the cooling and cleaning device of the photovoltaic power generation system according to the present invention, at least one of the air, water, cleaning liquid is selected by the spray nozzle provided in the reciprocating member moving along the surface of the solar module. By spraying to keep the surface of the solar module in a clean state it can improve the power generation efficiency of solar light.

In addition, by providing a light amount sensor in the panel of the solar module to clean the surface of the solar module to improve the light efficiency, and equipped with a temperature sensor around the solar module to cool the surface it is possible to prevent overheating of the solar module.

In addition, by switching the path using a three-way valve installed in the connection pipe to supply and spray air from the air supply to remove foreign matters such as fallen leaves, snow, etc. that can not be removed by water or to dry the surface of the solar module after cleaning.

1 is a perspective view of main parts of a cooling and cleaning device of a solar power system according to an embodiment of the present invention,
2 is a view of the main portion of the cooling and cleaning device of the solar power generation system according to an embodiment of the present invention seen from the rear,
Figure 3 is a side view of the overall configuration of the cooling and cleaning apparatus of the photovoltaic power generation system according to an embodiment of the present invention.

Hereinafter, a cooling and cleaning apparatus of a solar power system according to an embodiment of the present invention with reference to the accompanying drawings.

In this process, the thicknesses of the lines and the sizes of the components shown in the drawings may be exaggerated for clarity and convenience of explanation. In addition, terms to be described below are terms defined in consideration of functions in the present invention, which may vary according to the intention or convention of a user or an operator. Therefore, definitions of these terms should be made based on the contents throughout the specification.

1 is a perspective view of main parts of a cooling and cleaning device of a solar power system according to an embodiment of the present invention, Figure 2 is a main part of the cooling and cleaning device of a solar power system according to an embodiment of the present invention from the rear 3 is a side view of the overall configuration of a cooling and cleaning apparatus for a photovoltaic system according to an embodiment of the present invention.

1 to 3, the cooling and cleaning apparatus of the solar power generation system according to an embodiment of the present invention, the solar module 10, the injection nozzle 20, the reciprocating member 30 and the power transmission. And a member 80.

The photovoltaic module 10 is composed of a plurality of photovoltaic panels to receive sunlight to produce electricity.

The spray nozzle 20 cools or cleans the surface of the solar module 10 by supplying at least one of air, water, and a cleaning liquid to the foreign matter on the solar module 10 through a connection pipe.

The reciprocating member 30 reciprocates to the entire surface of the photovoltaic module 10 in a state in which a plurality of injection nozzles 20 are fixed.

The reciprocating member 30 has a fixed plate member 32 for fixing the injection nozzle 20, rollers 34 provided on both sides of the fixed plate member 32, and spaces on both sides of the solar module 10. The guide rail 36 is provided to be wound to guide the movement of the roller 34, and the support member 38 supports the guide rail 36.

The photovoltaic module 10 and the reciprocating member 30 are installed to be inclined so that water or the washing liquid can easily flow down.

The fixed plate member 32 is a plate member which is erected horizontally.

The rollers 34 may be directly fixed to both sides of the fixed plate member 32, or two may be disposed on the side surfaces of the plurality of support plate members 35 respectively fixed at right angles to both sides of the fixed plate member 32.

The guide rail 36 is formed as a guide groove in which the upper side is opened and all four sides are blocked.

Spray nozzles 20 are disposed on the bottom surface of the stationary plate 32 at predetermined intervals to supply at least one of air, water, and cleaning liquid supplied through the connection pipe 22 to the respective spray nozzles 20 at equal pressure. A pressure equalizing chamber 40 is provided.

The equalization chamber 40 is formed long in the horizontal length direction, and has a storage hole therein, and a connection hole is formed at the lower side so as to be connected to each injection nozzle 20.

The power transmission member 80 provides power to the reciprocating member 30.

The power transmission member 80 is wound on or loosened the connection ring 82 provided on one side of the photovoltaic module 10, the wire 84 connected to the connection ring 82, and the wire 84. The winch 86 to adjust, and the support roller 88 for supporting the wire 84 to be connected to the set angle bent.

The support roller 88 is located at the center between the plurality of guide rails 36 and is rotatably fixed to the support shaft 90 connected between the guide rail 36 or the support member 38. Of course, the support roller 88 may be fixed in various ways as necessary.

As such, when the winch 86 of the power transmission member 80 is driven, the pulley wire 84 is wound or unwound while the support plate 88, the wire 84, and the connecting ring 82 are fixed to the plate member 32. The roller 34 fixed to the c) is moved along the guide rail 36 to perform cooling and cleaning operations while moving the spray nozzle 20 back and forth from the upper side of the solar module 10.

Since the guide rails 36 are provided at both sides of the solar module 10, the guide rails 36 do not move out of the path or contact the solar module 10 or generate shadows when the reciprocating member 30 moves vertically.

A water storage tank 50 or a cleaning liquid storage tank 60 for supplying water or a cleaning liquid to the connecting pipe 22 is provided at one side of the reciprocating member 30.

The water or washing liquid storage tanks 50 and 60 are respectively supplied to the mixing tank storage tank 70 through the first and second pumps 52 and 62.

The mixing tank storage tank 70 receives and mixes the water and the washing liquid supplied from the water storage tank 50 and the washing liquid storage tank 60 at a predetermined ratio.

The water or washing liquid storage tanks 50 and 60 may be directly connected to the connection pipe 22 individually without passing through the mixing tank storage tank 70.

The water storage tank 50 and the cleaning liquid storage tank 60 may be separately installed to have separate valves, and may be configured to selectively supply water and the cleaning liquid to the injection nozzle 20 through separate connection pipes.

The mixing tank storage tank 70 is provided with a third pump 72 to supply the spray nozzle 20 with the cleaning agent in which water and the cleaning liquid are mixed in a predetermined ratio in the mixing tank storage tank 70.

The third pump 72 may be a vibrator pump that sprays while vibrating the cleaning agent sprayed on the solar module 10 through the spray nozzle 20.

The temperature sensor 12 is installed around the photovoltaic module 10 so that when the temperature is higher than the set temperature, the controller 16 controls the first, second and third pumps 52, 62, 72 and The power transmission member 80 may be operated to selectively spray at least one of air, water, and a cleaning liquid through the movement of the spray nozzle 20 to cool the surface of the solar module 10.

The photovoltaic module 10 is provided with a light amount sensor 14 that senses the amount of light, and when the power generation efficiency is lowered, the controller 16 controls the first, second, and third pumps 52, 62, 72 and power. The transfer member 80 may be operated to selectively spray at least one of air, water, and a cleaning liquid through the movement of the spray nozzle 20 to clean the surface of the solar module 10.

Since the light quantity sensor 14 is installed in the panel surface of the solar module 10, when foreign matters are stacked on the surface of the solar module 10, the light quantity sensor 14 detects a decrease in power generation efficiency due to weakening the amount of light collected and determines and cleans the foreign matter. will be.

The temperature sensor 12 cools the surface of the solar module 10 by spraying water and / or a cleaning solution in consideration of a decrease in power generation efficiency of the solar module 10 due to heat rather than a cleaning role.

Referring to FIG. 3, the connecting pipe 22 is provided with a three-way valve 24 to selectively supply air supplied from the air supply unit 26 to the injection nozzle 20.

That is, the spray nozzle 20 sprays air from the air supply unit 26 without spraying water and / or cleaning liquid, and thus can easily remove fallen leaves or snow that are not separated into water.

The air supply unit 26 is preferably an air pump.

The air supply unit 26 supplies water and / or a cleaning liquid to the connecting pipe 22 and then switches the path of the three-way valve 24 and supplies air to supply the air through the connecting pipe 22 and the pressure equalizing chamber 40. At 20, high pressure air may be injected downward to remove fallen leaves or snow or to dry the surface of the solar module 10 after cleaning.

As described above, the present invention selectively sprays at least one of air, water, and a cleaning liquid into the injection nozzle 20 provided in the reciprocating member 30 moving along the surface of the solar module 10. It is possible to improve the power generation efficiency of solar light by keeping the surface of 10) clean.

The present invention includes a light sensor 14 in the panel of the solar module 10 to clean the surface of the solar module to improve the light efficiency, and to provide a temperature sensor 12 around the solar module to cool the surface Overheating of the solar module can be prevented.

The present invention switches the path by using a three-way valve 24 installed in the connecting pipe 22 to supply and spray air from the air supply unit 26 to remove foreign matters such as fallen leaves or snow or quickly after cleaning the solar module The surface can be dried.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. I will understand.

Therefore, the true technical protection scope of the present invention will be defined by the claims below.

10 solar module 12 temperature sensor
14 light quantity sensor 16 control unit
20: injection nozzle 22: connector
24: three-way valve 26: air supply
30: reciprocating member 32: fixed plate
34: roller 36: guide rail
38 support member 40 equalization chamber
50: water storage tank 60: cleaning liquid storage tank
70: mixing tank storage tank 80: power transmission member
82: connection 84: wire
86 winch 86 support roller

Claims (9)

Solar module for generating electricity by receiving the sunlight;
A plurality of injection nozzles for cooling or cleaning the surface by supplying at least one of air, water, and a cleaning liquid to the foreign matter on the solar module through a connection pipe;
A reciprocating member reciprocating to the entire surface of the photovoltaic module while fixing the plurality of injection nozzles; And
It includes a power transmission member for providing power to the reciprocating member,
The solar module and the reciprocating member cooling and cleaning device of the solar power system, characterized in that installed inclined.
The method of claim 1,
The reciprocating member is fixed plate material for fixing the injection nozzle;
Rollers provided at both sides of the fixed plate member;
Guide rails provided on both sides of the photovoltaic module to wind the gaps to guide the movement of the rollers; And
Cooling and cleaning device for a photovoltaic power generation system comprising a support member for supporting the guide rail.
The method of claim 2,
The fixed plate member is provided with a pressure equalization chamber disposed at a predetermined interval on a bottom surface to supply air, water, and cleaning liquid supplied through the connection pipe to each injection nozzle at equal pressure. System cooling and scrubbing.
The method of claim 1,
The connection pipe is installed in the three-way valve cooling and cleaning device for a photovoltaic power generation system, characterized in that for selectively supplying the air supplied from the air supply to the injection nozzle.
The method of claim 1,
A water storage tank or a cleaning liquid storage tank for supplying water or a cleaning liquid to the connecting pipe is provided on one side of the reciprocating member,
The water or cleaning liquid storage tank is supplied to the mixing tank storage tank through the first and second pumps, respectively,
The mixing tank storage tank is a cooling and cleaning device for a photovoltaic power generation system, characterized in that for mixing the water supplied from the water storage tank and the cleaning liquid storage tank and the cleaning liquid at a predetermined ratio.
The method of claim 1, wherein
The mixing tank storage tank is provided with a third pump, the cooling and cleaning apparatus for a photovoltaic power generation system, characterized in that for supplying the spray nozzle with a predetermined ratio of water and the cleaning liquid in the mixing tank storage tank.
The method according to claim 6,
The third pump is a vibrator pump for spraying while vibrating the cleaning agent injected to the solar module through the injection nozzle, characterized in that the cooling and cleaning device of the solar power system.
The method according to claim 6,
Install a temperature sensor to sense the temperature around the photovoltaic module to operate the first, second, third pump and power transmission member in the control unit to cool the surface of the photovoltaic module when the temperature is above the set temperature,
The photovoltaic module is installed on the photovoltaic module to install a photovoltaic sensor that detects the amount of light, and when the power generation efficiency decreases, the first, second, and third pumps and the power transmission member are operated to clean the surface of the photovoltaic module. System cooling and scrubbing.
The method of claim 1,
The power transmission member has a connection ring provided on one side of the solar module;
A wire connected to the connection ring;
A winch for adjusting the length by winding or releasing the wire; And
Cooling and cleaning device for a photovoltaic power generation system characterized in that it comprises a support roller for supporting the wire bent at a set angle.

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