KR102354202B1 - Solar panel cleaner - Google Patents

Abstract

The present invention relates to a photovoltaic panel cleaner, and more particularly, to a photovoltaic panel cleaner for removing foreign substances from a photovoltaic panel in order to improve power generation efficiency of the photovoltaic panel.
According to the present invention, a rod, a motor connected to the rear end of the rod, a brush connected to the motor and rotated by the motor, and an inlet and a rear end provided at the front end and into which the cleaning liquid is injected, and spraying the cleaning liquid to the brush It includes a water supply hose including a nozzle unit.

Description

Solar panel cleaner {SOLAR PANEL CLEANER}

The present invention relates to a photovoltaic panel cleaner, and more particularly, to a photovoltaic panel cleaner for removing foreign substances from a photovoltaic panel in order to improve power generation efficiency of the photovoltaic panel.

In general, a photovoltaic generator that generates power using sunlight is configured to generate power using sunlight irradiated to the photovoltaic panel by installing a plurality of photovoltaic panels on an upper surface of a support frame.

At this time, since these solar panels are exposed to the outside, various foreign substances including dust, yellow sand, heavy snow, and bird droppings are accumulated on the upper surface. In this case, the power generation efficiency is lowered, but there is a problem that the transparency is reduced due to the surface contamination of the solar panel and the power generation efficiency is decreased by about 20%. A report has been published that indicates that 9.3% of the

Therefore, the solar panel in such a photovoltaic power generation needs to be cleaned every predetermined time.

Moreover, as the installation of home photovoltaic power generation facilities has rapidly increased in Korea and Asia, the demand and necessity for individual maintenance is gradually increasing.

Meanwhile, the prior art Registration Patent No. 10-1949828 (hereinafter referred to as the prior art) relates to a solar panel washing device, and more specifically, the solar panel washing device according to the present invention is installed in a panel frame supporting a solar panel. a guide rail, which moves along the guide rail, and a panel washing unit provided with a cleaning member capable of washing the surface of the solar panel on one side, and again after the panel washing unit moves along the guide rail and a unit return unit for returning the panel washing unit to return to the initial position, wherein the panel washing unit includes a lifting member to which the washing member is installed and coupled to the guide rail, and a rotatably installed to the lifting member, , including a water storage member having a water storage space so that water can be stored and having an upper side open, and when water is stored in the water storage member, the panel washing unit moves along the guide rail by the weight of the water stored in the water storage member Since the solar panel washing device is automatically cleaned according to the mechanical operation, separate power is not consumed according to the operation of the washing device, so it is efficient, and it is possible to automatically wash the light collecting panel to generate power There is an advantage in that the efficiency can be prevented from being lowered.

However, this prior art has a problem in that the solar panel cannot be effectively cleaned by simply moving the panel cleaning unit including the cleaning member along the guide rail. In addition, the prior art has a problem in that it is not economical to clean the photovoltaic panel of a small-scale photovoltaic power plant, such as a home photovoltaic power plant, as a form of installation on a photovoltaic panel.

The present invention has been devised to solve the above problems, and it is possible to more economically clean the solar panel of a small-scale solar power generation facility, such as a home solar power generation facility, and to provide a solar panel cleaner capable of improving cleaning efficiency is intended for

The present invention for the purpose of solving the above problems has the following configuration and features.

A rod, a motor connected to the rear end of the rod, a brush connected to the motor and rotated by the motor, and a nozzle portion provided at the front end and provided at the inlet and the rear end into which the cleaning liquid is injected and spraying the cleaning liquid to the brush Includes water supply hose.

In addition, the motor may output a rotational force, and include a driving shaft whose longitudinal direction is parallel to a normal direction of the upper surface of the solar panel, and the brush may be connected to the driving shaft and rotated around the driving shaft as a central axis.

In addition, it further includes a connecting member provided at the front end and including a coupling part to which the rod is connected, and a rotation coupling part branched from the rear end of the coupling part, the rear end side extending in a direction orthogonal to the rod on a plane, wherein the motor is the At least a portion of the rotation coupling portion is interpolated to include a rotation counteracting portion coupled thereto, and the water supply hose includes a first hose and a second hose, wherein the first hose is a first inlet through which a detergent solution of the cleaning solution is injected, and the detergent solution. may include a first nozzle for spraying with the brush, and the second hose may include a second inlet through which water in the detergent solution is injected, and a second nozzle through which the water is sprayed with the brush.

The present invention having the above configuration and characteristics can more economically clean the solar panel of a small-scale photovoltaic power plant, such as a home photovoltaic power plant, by including a brush connected to the rear end of the rod and rotated by a motor, and the cleaning efficiency is improved. It has the effect of improving it.

In addition, the present invention includes a brush that rotates about the driving shaft of the motor whose longitudinal direction is parallel to the normal direction of the upper surface of the solar panel as a central axis, so that the solar panel is manufactured through a brush that moves in multiple directions with respect to the moving direction of the rod. Since it can be washed, it has the effect of improving cleaning efficiency.

In addition, the present invention includes the connecting member, and by including a rotation corresponding portion that the motor is coupled to the rotation coupling portion, it has the effect of being able to wash the solar panel installed at various angles.

In addition, the present invention has the effect that washing can be performed in stages by including a first nozzle for spraying a detergent solution and a second nozzle for spraying water.

1 is a view showing a solar panel cleaner according to an embodiment of the present invention.
2 is a view showing a solar panel cleaner according to another embodiment of the present invention.
3 is a diagram illustrating a further embodiment of the present invention.

Since the present invention can have various changes and can have various forms, implementation examples (態樣, aspects) (or embodiments) will be described in detail in the text. However, this is not intended to limit the present invention to the specific disclosed form, it should be understood to include all modifications, equivalents and substitutes included in the spirit and scope of the present invention.

The terminology used herein is only used to describe a specific embodiment (aspect, aspect, aspect) (or embodiment), and is not intended to limit the present invention. The singular expression includes the plural expression unless the context clearly dictates otherwise. In the present application, terms such as comprises or consists of are intended to designate that the features, numbers, steps, operations, components, parts, or combinations thereof described in the specification exist, but one or more other features It is to be understood that it does not preclude the possibility of the presence or addition of numbers, steps, operations, components, parts, or combinations thereof.

Unless defined otherwise, all terms used herein, including technical and scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with the meaning in the context of the related art, and should not be interpreted in an ideal or excessively formal meaning unless explicitly defined in the present application. does not

~1~, ~2~, etc. described in the present specification are only to be referred to to distinguish that they are different components, and are not limited to the order of manufacture, and their names in the detailed description and claims of the invention are may not match.

Throughout this specification, when a part is "connected" with another part, this includes not only the case of being "directly connected" but also the case of being "indirectly connected" with another element interposed therebetween. do.

1 is a view showing a solar panel cleaner according to an embodiment of the present invention, Figure 2 is a view showing a solar panel cleaner according to another embodiment of the present invention.

Hereinafter, a solar panel cleaner (PC) according to an embodiment of the present invention and a solar panel cleaner (PC) according to another embodiment of the present invention will be referred to as 'this device' for convenience of description.

Referring to FIG. 1 , the device (a solar panel cleaner PC) includes a rod 1 , a motor 2 , a brush 3 , and a water supply hose 4 .

First, the rod (1) is for carrying the motor (2), brush (3) and water supply hose (4), which will be described later, and has a diameter so that a user using the rod (1) can easily grip it. It is preferable to form

As will be described in more detail in the following description, since at least a portion of the water supply hose 4 can be built into the rod 1, the rod 1 has a hollow through which one end (front end) and the other end (rear end) pass therein. can be formed.

Illustratively, the rod 1 may be formed in a telescopic structure so that its length is adjustable, which is obvious to those skilled in the art, and thus a more detailed description will be omitted. Illustratively, the rod 1 may be 2.4 to 14 m long, and may be made of a carbon material.

Referring to FIG. 1 , the motor 2 is connected to the rear end of the rod 1 . Here, the rear end is based on the flow direction of the cleaning liquid in the water supply hose 4 to be described later. Therefore, the front end of the rod 1 is a part gripped by a user using the present device. The front-end direction and the rear-end direction to be described below will be equally applied based on the direction in which the cleaning liquid moves in the water supply hose 4 to be described later.

As will be described in more detail in the following description, the motor 2 may include a housing H, and the motor 2 includes an iron material (not shown), an electric device (not shown), and the like for generating magnetic force. Therefore, since corrosion may occur, the iron material (not shown), the electric device (not shown), etc. of the motor 2 may be accommodated in the housing H in order to be protected from the external environment.

The rod 1 is electrically or communicatively connected to the motor 2 at the front end and may include a switch (not shown) for determining whether to supply power to an electric device (not shown) of the motor 2 . is of course Since this is obvious to those skilled in the art, a more detailed description will be omitted.

The solar panel cleaner (PC) according to an embodiment of the present invention may include a connecting member 5 , which is a member that connects the rod 1 and the motor 2 .

More specifically, the connecting member 5 may include a coupling portion 51 provided at the front end and connected to the rear end of the rod 1 . Since at least a portion of the water supply hose 4 may be embedded in the coupling portion 51 like the rod 1, it may be a tubular body having a hollow through which the front end and the rear end pass. Exemplarily, a female thread is formed on the outer peripheral surface of the rear end of the rod 1, and a male thread is formed on the inner peripheral surface of the front end of the coupling part 51, so that the rod 1 and the coupling part 51 are screwed together to be mutually coupled (connected). can

In addition, the connecting member 5 may include a rotational coupling portion 52 that is branched from the rear end of the coupling portion 51 and the rear end extends along a direction perpendicular to the longitudinal direction of the rod 1 on a plane. The rotational coupling part 52 may also be a tubular body like the rod 1 and the coupling part 51 .

At this time, the motor 2 may include a rotation-response part 52 in which at least a portion of the rotation coupling part 52 is interpolated and rotatably coupled. As described above, the motor 2 may include a housing H, and it was said that an iron material (not shown), an electric device (not shown), etc. of the motor 2 can be accommodated in the housing H, the rotation The corresponding part 52 may be formed in the housing H so that the housing H is rotatably coupled to the rotation coupling part 52 . At least a portion of the housing (H) likewise the water supply hose (4) may be built-in.

Illustratively, the rotation coupling part 52 may include a fitting protrusion (not shown) provided to protrude outward from the outer circumferential surface, and the rotation counteracting part 52 may include the fitting protrusion (not shown) on the outer circumferential surface so that the fitting protrusion (not shown) is fitted. It may include a fitting groove (not shown) recessed to the outside. Here, the outward direction may mean a direction opposite to the inner direction from the outer peripheral surface of the rotational coupling part 52 toward the center line along the longitudinal direction of the rotationally coupled part 52 .

In this way, the rod 1 and the motor 2 are coupled (connected) by the connecting member 5 , and the motor 2 can rotate with the longitudinal direction of the rotation coupling part 52 as the central axis. , the motor 2 can be rotated (tilted). As will be described later, since the brush 3 is connected to the motor 2, eventually the brush 3 is rotated (tilted) with the longitudinal direction of the rotation coupling part 51 as the central axis by the external force transmitted from the rod 1. will become

Therefore, there is an advantage of improving versatility because it can be applied to the solar panel (SP) installed at various angles and the height of the user using the solar panel cleaner (PC) according to an embodiment of the present invention.

2 is a view showing a solar panel cleaner according to another embodiment of the present invention. Referring to FIG. 2 , the solar panel cleaner PC according to another embodiment of the present invention may include a link member 6 , the link member 6 connecting the rod 1 and the motor 2 . It is the absence of

More specifically, the link member 6 includes a first insertion hole 611 into which the rod 1 is inserted, a second insertion hole 612 provided vertically at the rear end of the first insertion hole 611, and the The first insertion hole 611 may include a bracket 61 including a tightening adjustment unit 613 for adjusting the size of each. In addition, the link member 6 may include a rotating part 62 that is connected to the motor 2 and is inserted into the second insertion hole 612 .

For example, to be more specific, at least a portion of the rotating part 62 (eg, a part inserted into the second insertion hole 612 ) may be a cylindrical tubular body. In addition, the bracket 61 has a 'L' or 'T' shape, and the second insertion hole 612 is curved upward so that at least a part of the cylindrical rotating part 62 is inserted into the recessed upper plate and the lower side. It may be formed by combining the curved and recessed lower plate. Here, the upper side and the lower side describe the motor 2 to be described later and will be described in more detail.

At this time, the tightening adjustment unit 613 may be a bolt, and each of the upper plate and the lower plate may have a nut hole into which the bolt is inserted. That is, when the bolts simultaneously inserted into the upper plate and the lower plate tighten the upper plate and the lower plate, the size of the second insertion hole 612 becomes smaller, and when the bolt releases the tightening of the upper plate and the lower plate, the second insert hole The size of (612) can be large.

If, as described above, the bolt releases the tightening of the upper plate and the lower plate to increase the size of the second inserting hole 612, the rotating part 62 inserted into the second inserting hole 612 is the second inserting hole ( Since it can rotate based on the insertion direction of the rotating part 62 in 612 , there is an advantage that the motor 2 to which the brush 3 is connected can be tilted by an external force transmitted from the rod 1 . That is, since it can be applied to the solar panel (SP) installed at various angles and the height of the user using the solar panel cleaner (PC) according to another embodiment of the present invention, there is an advantage in that versatility is improved.

As described above, it was said that the rotating part 62 can be connected to the motor 2 . As described above, the motor 2 may include the housing H, and the rotating part 62 is extended to the housing H. can be formed. Likewise, at least a portion of the emergency hose 4 may be built into the housing (H).

Referring to FIG. 2, the rotating part 62 has an insertion part 621 having one side inserted into the second insertion hole 612 and the other side exposed from the second insertion hole 612, and the other side is the motor ( A tilt part 622 connected to 2) and coupled to tilt with one side of the insertion part 621 and the width direction of the rotation part 62 orthogonal to the longitudinal direction of the rotation part 62 as a central axis ) may be included. Herein, the width direction of the rotating part 62 exemplarily means a direction orthogonal to the longitudinal direction of the rotating part 62 in a plane parallel to the surface in contact with the solar panel SP in the brush 3 . can do.

Here, one side may mean the second insertion hole 612 side of the bracket 61 and the other side may mean the motor 2 side opposite to the one side. In addition, the longitudinal direction of the rotating part 62 may mean a direction having a length of a line connecting the one side and the other side.

Illustratively, the rotating part 62 may include a joint 623 having a length in the width direction of the rotating part 62 , and the insertion part 621 and the tilt part 622 are mutually on the other side and one side, respectively. In the overlapping state, the other side of the insertion part 621 and one side of the tilt part 622 may include a through hole through which the joint 623 is inserted. That is, the insertion part 621 and the tilt part 622 are coupled so that the joint 623 is inserted through and tilted to each other.

Illustratively, the joint 623 is rotatably inserted in the through hole of the insertion part 621, and is fitted with the through hole inner circumferential surface of the tilt part 622 (the surface forming the through hole of the tilt part 622 and the joint 623) ) the outer circumferential surface is fixed) so that the tilt part 622 can be tilted with respect to the insertion part 621 by rotation of the joint 623 .

At this time, the insertion part 621 has a ridge that protrudes in the width direction of the rotation part 62 on the contact surface in contact with the tilt part 622 from one side and a sawtooth including a valley recessed in the width direction of the rotation part 62 . may be provided along the rotational direction of the joint 623 , and teeth corresponding to the teeth may be provided on a contact surface in contact with the insertion part 621 from the other side of the tilt part 622 .

1 and 2 , the brush 3 is connected to the motor 2 and rotated by the motor 2 . The motor 2 may include a driving shaft (not shown) to which a rotational force is output. That is, the driving shaft (not shown) is to output the rotational force by the iron material (not shown), the electric device (not shown), etc. of the motor 2 .

The brush 3 may be connected to a drive shaft (not shown) of the motor 2 to rotate. Since the coupling structure between the brush 3 and the driving shaft (not shown) is obvious to those skilled in the art, a more detailed description thereof will be omitted.

As such, the device includes the brush 3 rotated by the motor 2 , so that compared to when the user washes the solar panel SP while moving the brush 3 , the solar panel SP ) has the advantage of improving the cleaning efficiency.

The driving shaft (not shown) of the motor 2 may output a rotational force, and the longitudinal direction may be parallel to the normal direction of the upper surface of the solar panel SP. The upper surface is a surface facing upward in the vertical direction, and may mean a surface facing upward or 11 o'clock with reference to FIG. 1 . That is, the driving shaft (not shown) rotates with an axis parallel to the normal direction of the upper surface of the solar panel SP as a central axis by an iron material (not shown) or an electric device (not shown) of the motor 2 .

In this way, since the drive shaft (not shown) of the motor 2 connected to the brush 3 rotates about an axis parallel to the normal direction of the upper surface of the solar panel SP as a central axis, the brush 3 is also a solar panel (SP) It can rotate about an axis parallel to the normal direction of the upper surface as the central axis.

As described above, in the present device, since the brush 3 rotates about an axis parallel to the normal direction of the upper surface of the solar panel SP, the brush 3 rotates 360 degrees around the driving shaft (not shown). There is an advantage that the cleaning efficiency of the solar panel SP is improved with respect to the moving direction of the rod 1 . More specifically, the brush 3 has a recess in the rear end face according to its characteristics, and when the brush 3 is moved in one direction, foreign substances and the like may not be cleaned by these grooves. At this time, even if the rod 1 is moved in one direction, since the brush 3 rotates 360 degrees around the drive shaft (not shown), foreign substances can be removed regardless of the presence of the groove, thereby improving cleaning efficiency. .

The brush 3 is preferably formed in parallel with the upper surface of the rear end surface of the solar panel (SP).

1 and 2 , the water supply hose 4 is provided at the front end and includes an inlet (not shown) into which the cleaning liquid is injected, and a nozzle portion N provided at the rear end for spraying the cleaning liquid to the brush 3 . do. As described above, the water supply hose (4) may be at least partially embedded in at least one of the rod (1), the connecting member (5), and the housing (H). Alternatively, the water supply hose 4 may be in a separated state without being built-in.

More specifically, the water supply hose 4 includes a first hose 41 and a second hose 42, but the first hose 41 is a first inlet (not shown) into which the detergent solution in the cleaning solution is injected. And it may include a first nozzle (N1) for spraying the cleaning liquid to the brush (3). In addition, the second hose 42 may include a second inlet (not shown) into which water in the detergent solution is injected and a second nozzle N2 for spraying water to the brush 3 .

The first hose 41 and the second hose 42 selectively open and close the first inlet (not shown), the second inlet (not shown) or the first nozzle (N1) and the second nozzle (N2), respectively. Of course, a valve may be provided.

Illustratively, the first hose 41 and the second hose 42 may have a front end embedded in the rod 1 and the connecting member 5, respectively, and the rear end of the connecting member 5 (or the rod 1) or The nozzle unit N exposed to the outside through the through hole of the link member 6) and provided at the rear end may be disposed to spray the brush 3 with detergent solution or water. As another example, the rear end is exposed to the outside through the through hole of the connecting member 5 (or the rod 1 or the link member 6) and inserted into the housing (H) so that the nozzle unit (N) is cleaned with the brush (3). It may be arranged to spray liquid or water.

The water supply hose 4 may be provided corresponding to the number of brushes 3 , and each of the first hose 41 and the second hose 42 has a plurality of brushes 3 connected to each of the motors 2 . The detergent liquid or water may be sprayed by the first nozzle N1 and the second nozzle N2 .

In this way, the water supply hose 4 of the present device includes a first hose 41 for supplying detergent solution to the brush 3 and a second hose 42 for supplying water to the brush 3, so that sunlight The washing of the panel SP can be performed in stages. For example, after the solar panel SP is washed by supplying a detergent solution, the second hose 42 is closed through a valve, etc. to supply the detergent solution. By blocking and supplying only water through the first hose 41, there is an advantage that the detergent solution can be removed from the solar panel SP.

3 is a diagram illustrating a further embodiment of the present invention.

1 to 3, as described above, the motor 2 supplies electric power to a steel material (not shown), an electric device (not shown), and an electric device (not shown) of the motor 2 to generate a magnetic force. It may include a switch (not shown) that determines whether or not and a communication device (not shown) that electrically or communicatively connects, and the cleaning solution (water, detergent solution, etc.) is scattered by the rotating brush 3, etc. Corrosion may occur in materials (not shown), electrical devices (not shown), etc., or communication devices (not shown) may break down.

At this time, if the iron material (not shown), the electric device (not shown), the communication device (not shown), etc. are connected to each other and installed inside the housing (H), it is separated from the transport cable and the steel material ( (not shown), an electric device (not shown), and a communication device (not shown), because any one of them may fall and be damaged or damaged. Any one of them can be installed while connecting the others to the housing (H).

At this time, it is necessary to open one side of the housing (H) in order to containerize the wiring work for structural and electrical connection, etc., inside the housing (H) a steel material (not shown), an electric device (not shown) After the communication device (not shown), etc. is installed, water, etc. flows into the housing (H) to prevent damage to the iron material (not shown), the electrical device (not shown), the communication device (not shown), etc. It is necessary to maintain hermeticity.

As a means for solving the above problem, the motor 2 may include a housing (H), the housing (H) having an opening (H11) and an internal space (H12) on one side of the body (H1), It may include a cover (H2) coupled to the body (H1) to cover the opening (H11), and sealing coupling means (C) for coupling and sealing the body (H1) and the cover (H2).

The sealing coupling means (C) includes a binding groove (C1) formed along the circumference of the main body (H1), an extended groove (C2) formed on the wall surface of the binding groove (C1), and a cover (H2) on the wall surface of the extended groove (C2) The access hole C3 formed to the side, the binding protrusion C4 which is provided along the circumference of the cover H2 and is inserted into the binding groove C1, is provided along the circumference of the cover H2 and corresponds to the entrance hole C3. The locking groove (C5) formed at the position, the sealing member (C6) provided on the outer surface of the binding protrusion (C4), and the locking pin are accommodated in the entrance hole (C3), and the front end is inserted into the locking groove (C5) when moving forward and backward. (C7),

The sealing member C6 includes a heating part C61 that generates heat by an impact greater than or equal to a threshold value, and an expansion part C62 that is provided outside the heating part C61 and expands by heat.

As described above, since the housing H has the opening H11, accessibility to the internal space H12 is improved, so that work on the internal configuration, for example, assembly, wiring, replacement, soldering, etc. is easy. In addition, it is possible to fundamentally prevent the deterioration of the sealing property due to taking the powder bonding form to equip the opening (H11) by the sealing coupling means (C) without additional equipment, additional tools and skilled technology, and furthermore, the main body ( It is possible to improve the bonding strength and bonding retention between H1) and the cover (H2).

(In the following description, for convenience of explanation, the upper, lower, left, and right are set based on Fig. 2. This direction specification should not be construed as an element limiting the scope of the present invention. .)

Referring to FIG. 2, more specifically, the binding groove C1 is a groove formed along the circumference of the main body H1 on the end side of the main body H1, and the overall shape of the binding groove C1 is the main body It follows the shape of (H1). This binding groove (C1) is formed by recessing downward along the circumference of the main body (H1) from the upper end.

And the extended groove (C2) is a groove formed in the wall surface (the reference side wall surface in the drawing) of the binding groove (C1), also the overall shape of the extended groove (C2) follows the shape of the main body (H1). The binding groove C1 and the extended groove C2 have a continuous groove structure along the circumference of the main body H1.

And the entrance hole (C3) is formed from the wall surface of the extension groove (C2) toward the cover (H2). Exemplarily, the entrance hole C3 may be a through hole passing through the upper wall surface adjacent to the cover H2 in the extension groove C2 and the upper end of the body H1 .

And the binding protrusion C4 is provided to protrude downward from the bottom along the circumference of the cover H2, and is inserted into the binding groove C1 when the body H1 and the cover H2 are coupled.

And the locking groove (C5) is a groove recessed upward from the lower end of the cover (H2), similarly formed along the circumference of the cover (H2) at a position corresponding to the entrance (C3).

And the sealing member (C6) is provided on the outer surface of the binding protrusion (C4). The sealing member (C6) includes a heating part (C61) that generates heat by an impact greater than or equal to a threshold value, and an expansion part (C62) provided on the outside of the heating part (C61) and expands by heat. In more detail, the heat generating part C61 includes 50 parts by weight of water relative to 80 parts by weight of sodium acetate, and is accommodated in the heat conductor C63. The heating part C61 may be provided by dissolving sodium acetate in water in a supersaturated state.

The heat generating part C61 is pressed by the lower wall of the cover H2 and the binding groove C1 during the coupling process between the cover H2 and the body H1 and receives an impact greater than a threshold to generate heat, and the heating temperature is It is about 50-90°C.

The expansion part C62 is characterized in that it further comprises 1 part by weight of polyol di(meth)acrylate and 13 parts by weight of hydrofluor ether, based on 100 parts by weight of the cellulose ester.

In the above, the cellulose ester is used as a thermoplastic polymer constituting the polymerizable monomer, and has a glass transition temperature of 30 to 120° C., and the glass transition temperature is lowered to 55° C. by a crosslinking agent to be described later. Other compositions of the expandable part C62 are based on 100 parts by weight of this cellulose ester.

Polyol di(meth)acrylate is added as a crosslinking agent, and the molecular weight between crosslinking points is large, so that the viscosity of the expansion part C62 is increased without deterioration of the foaming properties of the hydrofluoroether without excessively increasing the crosslinking density of the polymer resin. In addition, there is an effect of lowering the glass transition temperature of the expansion part C62 to enable foaming at a low temperature. If the amount of the polyol di(meth)acrylate is too small, the thickening effect is insignificant and can be easily torn during foaming. As a result of repeated experiments, the content showing optimal foaming properties was 4 parts by weight.

Hydrofluoric ether is added as a blowing agent, and the content thereof is preferably 13 parts by weight. When the expansion part C62 is heated by the heating part C61, the thermoplastic polymer is softened and the internal pressure of the foaming agent is increased at the same time to expand the volume.

And the locking pin (C7) is accommodated in the entrance hole (C3) to move forward and backward (up and down in the drawing), and the front end is inserted into the locking groove (C5) when moving forward. Description of the specific details in which the locking pin C7 is accommodated in the entry hole C3 will be omitted, and common knowledge will be followed.

The above-described sealing coupling means (C) provides two major effects, one is to completely seal the gap occurring in the coupling portion between the body (H1) and the cover (H2), and the other is to the body (H1) ) and to improve the coupling force between the cover (H2), the coupling holding force, and to suppress the shaking of the cover (H2).

Summarizing the operation and effects of the sealing coupling means (C) with reference to FIG. 2, in the state of FIG. 2 [A], the heat generating unit (C61) is an impact applied when coupling between the main body (H1) and the cover (H2). The expansion part C62 is expanded while being heated by the , and the gap between the body H1 and the cover H2 is filled and completely sealed as shown in FIG. 2 [B]. And in this process, the expansion part C62 expands and fills the extended groove C2, so that the locking pin C7 is advanced so that the locking pin C7 is inserted into the locking groove C5, so that the main body H1 and the coupling and locking structure between the cover H2 are realized.

The rod 1 is electrically or communicatively connected to the motor 2 at the front end and may include a switch (not shown) for determining whether to supply power to an electric device (not shown) of the motor 2 . is of course Since this is obvious to those skilled in the art, a more detailed description will be omitted.

The present invention described above with reference to the accompanying drawings is capable of various modifications and changes by those skilled in the art, and such modifications and changes should be construed as being included in the scope of the present invention.

Solar Panel Cleaner: PC Rods: 1
Motor: 2 Brushes: 3
Water supply hose: 4 1st hose: 41
2nd hose: 42 Nozzle part: N
1st nozzle: N1 2nd nozzle: N2
Connection member: 5 Connection part: 51
Rotational coupling part: 52 Link member: 6
Bracket: 61 First inlet: 611
2nd inlet: 612 Tightening control part: 613
Rotating part: 62 Insertion part: 621
Tilt part: 622 Joint: 623

Claims (4)

pole;
a motor connected to the rear end of the rod;
a brush connected to the motor and rotated by the motor; and
a water supply hose provided at the front end and including a nozzle unit provided at the rear end and provided at the inlet to which the cleaning liquid is injected and spraying the cleaning liquid to the brush;
including,
The motor has a rotational force output, the longitudinal direction includes a drive shaft parallel to the normal direction of the upper surface of the solar panel,
The brush is connected to the drive shaft and rotates about the drive shaft as a central axis,
Further comprising a connecting member provided at the front end and including a coupling part to which the rod is connected, and a rotation coupling part branched from the rear end of the coupling part, the rear end side extending in a direction orthogonal to the rod on a plane, wherein the motor rotates At least a portion of the coupling part includes a rotation corresponding part to be interpolated and coupled,
The water supply hose includes a first hose and a second hose, wherein the first hose includes a first inlet through which a detergent solution of the cleaning solution is injected, and a first nozzle for spraying the detergent solution with the brush, the second The hose includes a second inlet through which water in the detergent solution is injected and a second nozzle for spraying the water with the brush,
Further comprising a housing in which the motor is accommodated, wherein the housing has a main body having an opening and an inner space on one side, a cover coupled to the main body to cover the opening, and a hermetic coupling for coupling and sealing the main body and the cover including means;
The sealing coupling means includes a binding groove formed along the circumference of the main body, an extension groove formed on a wall surface of the binding groove, an exit hole formed from the wall surface of the extension groove toward the cover, and provided along the circumference of the cover and the binding groove The binding protrusion inserted into the, a locking groove provided along the circumference of the cover and formed at a position corresponding to the entry hole, a sealing member provided on the outer surface of the binding projection, and the front end when accommodated in the entry hole and forward and backward and a locking pin inserted into the locking groove;
The sealing member includes a heating part that generates heat by an impact greater than or equal to a critical value, and an expansion part that is provided on the outside of the heating part and expands by heat,
The heating part comprises 50 parts by weight of water compared to 80 parts by weight of sodium acetate,
The expansion part is a solar panel cleaner, characterized in that it further comprises 1 part by weight of polyol di(meth)acrylate and 13 parts by weight of hydrofluor ether, based on 100 parts by weight of the cellulose ester. delete delete delete

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