• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    Positioning device for cleaning surfaces of different geometry by means of proximity or contact, and procedure of use, whose main characteristics are that it is perpendicular to the surface, the cleaning equipment being arranged in a line parallel to it, covering it completely, so that, by means of water spraying, with dirt removing element (brush or similar) or without it, the cleaning of the entire surface to be cleaned is optimized. (Machine-translation by Google Translate, not legally binding)
    公开号:ES2649989A1
    申请号:ES201630973
    申请日:2016-07-15
    公开日:2018-01-16
    发明作者:Jose Ruben CABRAL HERRERA；Jose Enrique REINA JAIME；Javier Jesus GARCIA PEREZ AINSUA
    申请人:Ecilimp Termosolar S L；Ecilimp Termosolar SL；
    IPC主号:
    专利说明:

    Positioning device for cleaning surfaces of different geometry by means of proximity or contact, and use procedure.
    OBJECT OF THE INVENTION
    The present invention relates to a device, implemented in a mobile vehicle or with the tractor system forming an integral part thereof, intended for the positioning of 10 elements whose purpose turns out to be surface cleaning, covering the length where they are installed.
    They may be implanted in this, to ensure the cleaning effect, both pressurized liquids (pure water or water with some dissolved cleaning agent) and any other technology that allows the removal of deposited dirt or combination of several, with or without the help of Rotating brushes and or scratching lips with or without drying (in the case of using liquids). All these systems will be considered "cleaning elements" in a generic way.
    The system is designed so that it can be implemented at the tip of an extendable arm 20, such as those installed in boom trucks.
    BACKGROUND OF THE INVENTION
    Various systems that perform similar processes are currently known, 25 mentioning the following being of special interest:
    1º) ES-1062794_U: the cleaning equipment object of the invention is intended for solar collection panels with a two-axis solar tracker, of the type that are constituted by a base support that supports a panel formed by multiple photovoltaic panels, and is
    30 characterized by the fact that it comprises at least one liquid outlet located in the panel for cleaning coupled at least to a liquid supply conduit and pumping means for the liquid.
    2º) ES-1070127_U: this invention has as its object the presentation of a device 35 composed of guides in vertical or horizontal arrangement on which a cleaning carriage that moves by means of motors with gearbox slides, which transmits its rotation to its

    respective pulleys by dragging of toothed belts, transmission chains or toothed rack. On the other hand, another reduction motor rotates a cleaning roller located with the profile of the cleaning car in contact with the outside of the solar panel; The roller is impregnated with cleaning liquid so that when the car is raised and lowered, the cleaning roller sweeps the solar panel with one or more scrapers and an air-drying complement. At the end of the descent, the surplus liquids are collected in a tray following the profile of the cleaning car that has drain holes.
    3º) ES-1074781_U: the object of the invention is centered on a vehicle that incorporates a series of elements intended to clean the upper surface of the solar energy collection panels, especially those installed in solar fields, with in order to increase their performance, presenting the particularity of incorporating, on the one hand, means to effectively control the approximation of the brush or cleaning cylinder that it has, to the surface of the panels and to maintain its position even if the vehicle travels through terrain with irregularities, and, on the other hand, means to ensure the immediate drying of the panels after cleaning them.
    4th) WO2010079242A1, procedure for cleaning solar panels, characterized by the projection of water vapor in the form of multiple individual jets at a pressure and temperature conditional on the resistance characteristics of the solar panel to be cleaned and the impurities to be removed, and according to an adjustable angle with respect to the panel, variable according to the type of impurities to be removed, approximately between 30º and 90º, with variable steam temperature between 150ºC and 200ºC, variable pressure between 2.5bar and 5 bars, performing contact cleaning Smooth plus steam jet projection.
    5th) P-200902289: the automatic hydrolimpiador for cleaning solar panels, consists of an arm for cleaning solar panels formed by a set of articulated bars, joined by articulation to a tractor vehicle. Thanks to the positioning bars it is possible to place the spray bars in the optimum position for the correct cleaning of the plates. The movement between the different bars that make up the assembly is achieved thanks to a hydraulic system run by an electronic control unit located in the control cabin of the tractor vehicle itself. This invention suffers from the accessories described as necessary components in this description, which provide concrete improvements both in construction and in the execution of work by the team.

    4
    6th) EP0668400 A1: Equipment for cleaning surfaces at height, above ground level, such as vertical surfaces and vaults, including complex contours, such as the walls of tunnels, road equipment, panels, or others.
    5 The proposed invention contains the following advantages and, therefore, novelty, with respect to theknown state of the art, while there are no references to a system thatcomply with all these characteristics that the proposed invention meets:
    With respect to the complete set:
    10 The coupling assembly performs perpendicular positioning with respect to the section of the surface to be cleaned, and the final cleaning element anchoring device has a distance control approach system, as well as the set includes limit detection systems of the profile to be cleaned, which, in short, allows a perfect adaptation
    15 to the different surfaces both in shape and in proximity, height and inclination.
    The tip of the extendable arm allows a quick assembly, by means of a securing bolt and bolted safety fixing joint that allows quick coupling and uncoupling, being able to adapt to different extendable arms (load capacity,
    20 geometry and sizes).
    Both the approach and the perpendicular confrontation allow to minimize the connection elements to compressed air, electricity, communication and hydraulic oil installations.
    Both the approach and the perpendicular confrontation allow to minimize the construction of the structural elements that support the cleaning equipment
    The final implement for anchoring cleaning elements includes movable elements 30 designed for the drawing of structural elements that are in the advance of the surface line, which can be a stumbling block for cleaning equipment.
    In the brush cleaning profile there are actuators that provide damping that protects against impacts and overpressures exerted on the surface to be cleaned, determining a safety pressure such that it will ensure the correct support of the cleaning elements while preventing surface breakage in the event that

    5
    This is fragile. As an additional safety measure, you will have a quick retraction system for the cleaning profile.
    Beam projection luminaires on surface to be cleaned and cleaned.
    With regard to the vehicle, the advantages are:
    Interchangeable heads, so that several implements can be arranged, even for different surfaces, with the same vehicle.
    Vehicle speed adjustable by the operator, allowing smooth and continuous displacements, independently of the vehicle's drive system.
    With respect to the implement working with rotary brushes:
    It has protection elements against the impact of the water spray nozzles, flexible extensions.
    Set of brushes depending on the number of surfaces, being able to organize by 20 pairs or per brush unit, depending on the morphology and size of each constituent unit of the surface.
    Ability to perform prewash and rinse by high or low water pressure only, or prewash and subsequent cleaning with brushing or combination of both.
    Ability to adjust the angle of attack of the brush, even making it possible to make the fourth opposite to the advance the portion of filaments of the brush that rubs the surface to be cleaned.
    30 Ability to adjust the speed of rotation of the brushes.
    DESCRIPTION OF THE INVENTION
    The proposed invention, "Positioning device for surface cleaning of
    35 different geometry by means of proximity or contact, and method of use ”, is carried out from the following constituent elements:

    6
    1. Mobile vehicle. Directed by a pilot driver, bearer of all the facilities necessary for the execution of the cleaning, namely:
    to. Tractor head of the vehicle.
    5 b. Operator controlled speed with measurement continues through tachograph.
    C. In the case of use of water or other cleaning fluid, it incorporates a fluid accumulation tank, with adequate volume for the required autonomy.
    d. Organization of different sections of water storage and distribution 10 of consumptions to ensure the correct leveling of the set.
    and. Pressurized pumping group, for the projection of cleaning water.
    F. Hydraulic group, in case the cleaning equipment requires hydraulic drives.
    g. Pneumatic group in case the cleaning equipment requires 15 pneumatic drives.
    h. Extensible arm This element may be the same or similar to the lifting booms of existing loads in the market. In any case, it may allow the interchangeability of the different cleaning implement configurations.
    i. Feed speed regulation system: This system allows a
    20 travel, smooth and at low speeds, independently of the vehicle's drive system.
    2. Positioning coupling. It will consist of a series of concatenated actuators so that, working in solidarity with the possible turns in the arm
    Extensible, the assembly ensures that the ultimate mechanism where the cleaning elements are located is positioned perfectly perpendicular to the surface to be cleaned. In turn, it will consist of the following parts:
    to. Anchoring piece with extendable arm. Independent structural element, configurable depending on the characteristics of the extensible arm.
    b. Rotary mechanisms that confer degrees of freedom in the three axes of rotation. These spins may be bounded in a given race or they may be executed by free rotations (the three axes of rotation, commonly referred to as X, Y and Z).
    35 c. Anchoring piece to the support implement for cleaning elements.

    7
    d. It may include a linear displacement system in the radial direction of the parabola, applicable when the road through which the vehicle moves is very far from the surfaces to be cleaned.
    5 3. Cleaning implement. On a supporting structure, the cleaning implement isjoins on one side to the positioning coupling and on the other side a second is mountedblock of structures, with moving elements between them, such that in the positionof work, reproduces a parabola parallel to that produced by the section of the surface toclean. This second block of structures serves as a support for the cleaning elements
    10 (cleaning liquid injection nozzles, rotating brushes or others).
    Between the supporting structure and the block of structures there is a mechanism that makes the movement of approach or distance between the anchor point to positioning coupling so as to ensure linear translation in the radial direction of the
    15 parabolic surface. This mechanism will allow the controlled approach to the surface to be cleaned, ensuring full support when required. It will also integrate a pressure control system that ensures that there is no overpressure that could deform or break the surface to be cleaned.
    20 The structure block that supports the cleaning elements contains mobile elements and drive systems (actuators, linear or rotary and electrical, pneumatic or hydraulic) that produce the folding to thereby overcome the structural elements supporting both the surface to be cleaned and other elements that could be located protruding from the surface to be cleaned and therefore causing a stumble
    25 in the advance of the cleaning system.
    The cleaning elements will cover the total surface to be cleaned. These elements may be some, a combination of some of them or even all of those listed below:
    i. Liquid curtain injection nozzle with pressure, with adjustable pressure and flow. Some sections of the cleaning liquid conduit pipes can be flexible as a safety against accidental impacts.
    35 ii. Rotating brushes, of inclination and distribution as well as in variable number, for its perfect adaptation to the profile of the surface to be cleaned.

    It will generally include the projection of cleaning liquid from the front, or both from behind.
    iii. In general, any system that, by approach or even contact, produces cleaning on a surface.
    4. Other functional elements, responsible for ensuring the proper functioning of the equipment, such as:
    i. Rigid structures.
    ii. Surface position detectors. They will be in number and will be arranged in the most convenient way depending on the surface to be cleaned.
    iii. Flow regulators, valves and other elements of pneumatic, hydraulic, oil and hydraulic installations.
    iv. Tanker in tractor element with semi insulated compartment.
    v. Beam projection luminaires for cleaning control by the operator.
    saw. In the case of cleaning with water, envelopes of the cleaning implement, of light mass, which together with a series of folding trays are responsible for collecting most of the projected water, with forced suction system or not, which by its passage through a filtering unit with or without reverse osmosis integrated in the tractor equipment, in such a way that the previously projected water is recovered, thus reducing the final water consumption.
    The procedure for using the Positioning Device for cleaning surfaces of different geometry by means of proximity or contact, described herein, will consist of the following steps:
    to. A vehicle that has an extendable arm engages at the tip of the latter a first set of mechanisms formed by a coupling with at least three degrees of rotational freedom, and may include a fourth degree of linear freedom, and then a second set of mechanisms that are in themselves the cleaning implement.
    b. The vehicle will be positioned so that its direction of travel runs parallel to the surface line to be cleaned. The separation between the truck and the surface may vary depending on the layout of the road. The surface may be with a wide range of

    inclination with respect to the vertical, but they should remain static during cleaning.
    C. The driver of the vehicle and operator of the cleaning equipment, through semi-automatic controlled movements, guided by distance and angle meters that exist in the cleaning implement, make an approach of the implement to the surface. This approach includes an orientation, the assembly must be positioned so that the cleaning equipment is located in an arc parallel to the surface.
    To carry out this movement, you must have made a refolding of the interior line of structures carrying the cleaning systems, in case you had to overcome, protruding parts of the surface to be cleaned. It will also keep the pressure control system and approach the cleaning elements in a retracted position.
    To execute this approach, you will use both the movements of the extendable arm (rotation with respect to the base of the anchor to the chassis, changes in the height of the tip by rotation of joints in second and subsequent arms) and the possible turns in the three axes, which are conferred by the coupling between extendable arm and supporting structure of cleaning implement. If the coupling has a linear extension, it will allow the truck to run farther from the surface.
    d. Once located approximately by the operator, it will open the structures supporting cleaning equipment, since it will have already overcome outstanding obstacles of the surface, and will expand the approach and pressure control mechanism, until supporting the cleaning equipment (brushes or , others) on the surface.
    and. The vehicle begins cleaning by carrying out, at the same time as it advances parallel to the surface line, some of the following actions (combinations of them): projecting cleaning liquid, acting with the dirt remover (brushes or others) and projecting water from cleared up.
    F. When, during the advance along the surface line, there is a structural element that can be a stumbling block for the cleaning equipment, both manually and automatically, the support structure of interior cleaning systems can be collected.

    10
    g. When the advance of the vehicle is not perfectly parallel, the parallel axes system that configures the approach and pressure control mechanism will absorb these differences in distance while they are corrected by the positioning system.
    h. When the vehicle progress finds height differences between the road and the glass line, the positioning error will be detected by means of position sensors and the equipment will be repositioned by combining the necessary movements in the extendable arm and the coupling. These movements may
    10 run semi automatically or automatically.
    i. The complete equipment can be folded back to enable safe transport, even by road for transport.
    15 BRIEF DESCRIPTION OF THE DRAWINGS
    To complement the description that is being made and in order to help a better understanding of the characteristics of the invention, according to a preferred example of practical realization thereof, it is accompanied as an integral part of this
    20 description, a set of figures in which, for illustrative and non-limiting purposes, the following has been represented:
    Figure 1.- Shows an isometric view of the model configured with brushes, in a truck assembly with cleaning mechanisms.
    25 Figure 2.- Shows an isometric view of the cleaning implement with coupling. Figure 3.- Shows an isometric view of a possible version of positioning coupling, which includes a linear extension system. Figure 4.- Shows an isometric view of another possible coupling version between truck boom and implement, which dispenses with the linear extension system.
    30 Figure 5.- Shows an isometric view of the cleaning implement assembly. Figure 6.- Shows a detail of Figure 5, with an isometric view of the cleaning implement assembly.
    In the mentioned figures the following constituent elements can be highlighted:
    01.-Tractor head of the vehicle.

    02.-Storage tank for cleaning liquid.03.-Mobile element for loading the cleaning group (pen).04.-Coupling between mobile load element and cleaning group.05.-X-axis angle corrector.06.-Y-axis angle corrector.07.-Z axis angle corrector.08.-Extension for correct distance positioning.09.-Cleaning implement.10.-Supporting structure of the cleaning implement.11.-Block of structures supporting cleaning elements.12.-Draw mechanism.13.-Damping and approach mechanism14.-Rotary brush.15.-Position detection elements.16.-Water injection nozzle.
    DESCRIPTION OF A PREFERRED EMBODIMENT
    The positioning device for cleaning surfaces of different geometry by means of proximity or contact, can be configured as a vehicle adapted for this purpose or an implement type device to be integrated in the tip of the boom of a truck that had a cistern and extendable arm with elevation.
    For the purposes of the present preferred embodiment, and in relation to the second configuration mentioned (configured as an implement to be incorporated into trucks that have a water accumulation tank and an extendable arm with elevation) the implement is installed at the tip of the mobile element of cleaning group load (3) existing in vehicle. This vehicle will have at least a tractor unit of the vehicle (1) and a chassis for transporting cargo, where a mobile load element of the cleaning group (3) must always be located and where a cleaning liquid accumulation tank can also be located (2).
    The cleaning implement (9) which is the set of mechanisms that explicitly execute the cleaning function must be positioned, for proper operation, in perpendicular orientation and centered in the center of the possible surface curves; In order to enable this assembly, it is based on a coupling between the mobile load element and the cleaning group (04) built as an axis that fits inside the tip of the

    movable element of load of the group of cleaning (3), and to assure its fixation a bolt of retention is used. This coupling element between the mobile loading element and the cleaning group (04) has a first hinged joint that is actuated by a linear actuator so that an X-axis angle corrector (05) is formed. Next, two serial turning systems are arranged so that the first one acts as an angle corrector in the Y axis (06) and the second one in the angle corrector in the Z axis (7). Then there may be a hollow rod directed radially, which contains another rod that can be moved inside it linearly and actuated by a linear actuator, thus performing the function of an extension for correct distance positioning (08), actuated by providing tip of the joint plate to the bearing structure of the cleaning implement (10).
    Following the coupling between the mobile load element and the cleaning group (04), the supporting structure of the cleaning equipment (10), of rigid construction, is fixed by means of a bolted joint or by means of a quick clamping system (fixing flanges type).
    Following the supporting structure of the cleaning equipment are two blocks of support structures for cleaning elements (11), subject to the previous one by means of a damping and approach mechanism (13) consisting of a parallel bar system that together with a linear actuator they ensure the approach of the elements that produce the cleaning, even getting to support them on the surface to be cleaned, with pressure control on it. In each block of support structures of cleaning elements (11) there are independent structures, joined by a hinge between them, so that these structures can be opened and closed, making the opening of a gap in the interior area of the parable, which raffles the structural elements that the surface can have both ornamental and functional. The hinged mechanism assembly, with its corresponding linear actuator, forms the draw mechanism (12) that exists in the support structure blocks of cleaning elements (11).
    In each block of structures supporting cleaning elements (11) the cleaning elements themselves, such as a rotary brush (14), as well as the facilities necessary for its operation (water pipes, hydraulic oil supply, pneumatic and pneumatic supply and electric, other possible).

    13
    At the end of the equipment, the elements whose function is to perform the cleaning will be arranged, and a series of cleaning fluid injection nozzles can be found at the front, in the direction of the vehicle's advance, then a series of brushes can be distributed rotary (14) to finally distribute a second line of nozzles
    5 injection of cleaning liquid for rinsing. You can also perform a less thorough cleaning and dispense with brushing.
    In the same bearing structure of the cleaning implement (10), the series of position sensing elements (15) can be distributed to help automate the positioning 10 of the rotating brushes (14) in reference to the surface to be cleaned.
    It is not considered necessary to make this description more extensive so that any person skilled in the art understands the scope of the invention and the advantages derived therefrom. The materials used, shapes, sizes, number of pieces and arrangement of the
    15 elements described will be subject to variation as long as this does not imply an alteration in the essentiality of the invention.

    权利要求:
    Claims (2)
    [1]
    1.-Positioning device for cleaning surfaces of different geometry by means of proximity or contact, characterized by being constituted from the following 5 constituent elements:
    a) Tractor element. Consisting of a driver-driven self-propelled vehicle, which is constituted, in turn, of:
    10 • Tractor head of the vehicle.
    • Operator controlled speed with measurement continues through tachograph.
    • Storage tank for cleaning liquid, with adequate volume for the required autonomy.
    • Organization of different sections of water storage and distribution of 15 consumptions to ensure the correct leveling of the set.
    • Pressure pumping group, for water projection.
    • Hydraulic group, when the cleaning equipment requires hydraulic drives.
    • Pneumatic group, when the cleaning team requires 20 pneumatic drives.
    • Extensible arm, mobile element of load of the cleaning group, equal or similar to the lifting feathers of existing loads in the market.
    b) Positioning coupling. It will consist of a series of concatenated actuators 25 that work in solidarity with the possible turns in the vehicle boom, and which consist of:
    • Anchoring piece with extendable arm tip. Independent structural element, configurable depending on the characteristics of the pen.
    30 • Rotary mechanisms that confer degrees of freedom on all three axes of rotation. These spins may be bounded in a given race or they may be executed by free rotations (three axes of rotation, commonly referred to as X, Y and Z).
    • Anchoring piece to the support implement for cleaning elements.
    • Additionally, it may include a linear displacement system in the radial direction of the surface.

    c) Cleaning implement. On a supporting structure the cleaning implement is attached, on the one hand, to the positioning coupling and on the other hand a second block of structures is mounted, with moving elements between them, so that in the working position it reproduces a curve parallel to that produced by the section of the surface to be cleaned, this second block of structures being the support of the cleaning elements (cleaning liquid injection nozzles, rotating brushes or others). Between the supporting structure and the block of structures a mechanism is incorporated that makes the movement of approach or distance between the anchor point to positioning coupling. In addition, the device may integrate a pressure control system. The block of
    10 structures that support the cleaning elements also contain mobile elements and drive systems (actuators, linear or rotary and electric, pneumatic or hydraulic) for folding.
    The cleaning elements will cover the total surface to be cleaned and may be some, a combination of some of them or even all of those listed below:
    • Liquid curtain injection nozzle with pressure, with adjustable pressure and flow. Some sections of the cleaning liquid conduit pipes can be flexible as a safety against accidental impacts.
    20 • Rotating, tilt and distribution brushes as well as variable numbers, for their perfect adaptation to the surface profile to be cleaned. It will generally include the projection of cleaning liquid from the front, or both from behind.
    • In general, any system that, by approach or even contact, produces cleaning on a surface.
    d) Other functional elements:
    • Rigid structures. 30 • Surface position detectors.
    • Flow regulators, valves and other elements of pneumatic, hydraulic, oil and hydraulic installations.
    • Tanker in tractor element with semi isolated compartment ..
    • Beam projection luminaires for cleaning control by the operator.

    • For the case of cleaning with water, envelopes of the cleaning implement, of light mass, with forced suction system or not.
    [2]
    2.- Positioning device for cleaning surfaces of different geometry
    5 by means of proximity or contact, according to claim 1, characterized in that the tractor element is an independent equipment such that the cleaning group and the attached functional elements are part of an interchangeable implement, using or not the same connecting element, pre-configured for different surface sections.
    10 3.-Use procedure of the Positioning Device for cleaning surfaces of different geometry by means of proximity or contact, as described in claims 1 and 2, characterized in that the set of actions to be performed for the correct use of the device is the one that follows in number and order:
    15 • A vehicle that has an extendable arm attaches a first set of mechanisms formed by a coupling with at least three degrees of rotational freedom, including a fourth degree of linear freedom, and then a second set of mechanisms that They are themselves the cleaning implement.
    • The vehicle will be positioned so that its direction of travel runs parallel to the surface line to be cleaned. The separation between the truck and the surface may vary depending on the layout of the road. The surface may be with a wide range of inclination with respect to the vertical, but must remain static
    25 during cleaning.
    • The driver of the vehicle and operator of the cleaning equipment, through semi-automatic controlled movements, guided by distance and angle meters that exist in the cleaning implement, makes an approach to the
    30 implement to the surface. This approach includes an orientation, the assembly must be positioned so that the cleaning equipment is located in an arc parallel to the surface.
    • To carry out this movement, you must have carried out the inner line
    35 of structures carrying the cleaning systems, in the event that there were to be overcome, protruding parts of the surface to be cleaned. It will also keep the

    pressure control system and approach of cleaning elements in retracted position.
    • To execute this approach you will use both the extendable arm movements
    5 (rotation with respect to the base of the anchor to the chassis, changes in the height of the tip due to the rotation of joints in the second and subsequent arms) such as the possible turns in the three axes, which are conferred by the coupling between the extensible arm and the supporting structure of cleaning implement. If the coupling has a linear extension, it will allow the truck to run farther from the surface.
    • Once located approximately by the operator, it will open the structures supporting cleaning equipment, since it will have already overcome outstanding obstacles of the surface, and will expand the approach and pressure control mechanism, until supporting the cleaning equipment (brushes or , others) on the surface.
    • The vehicle begins cleaning by carrying out, at the same time as it advances parallel to the surface line, some of the following actions (combinations of them): projecting cleaning liquid, acting with the dirt remover (brushes or others) and projecting water from cleared up.
    • When, during the advance along the surface line, there is a structural element that can be a stumbling block for the cleaning equipment, both manually and automatically, the support structure of interior cleaning systems can be collected.
    • When the vehicle advance is not perfectly parallel, the parallel axes system that configures the approach and pressure control mechanism will absorb these differences in distance while they are corrected by the positioning system.
    • When the vehicle advance finds height differences between the road and the glass line, the positioning error will be detected by means of position sensors and the equipment will be re-positioned by combining necessary movements in the extendable arm and the coupling . These movements
    35 may run semi automatically or automatically.

    • The complete equipment can be folded back to enable safe transport, even by road for transport.
    Fig. 1
    Fig 2
    Fig. 3
    Fig. 4
    Fig. 5
    Fig. 6
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    同族专利:
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    引用文献:
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    ES2375859A1|2010-07-07|2012-03-07|Rafael Mª MÉNDEZ DE LA CUESTA|Cleaning device for photovoltaic panels and solar thermal panels|
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