• 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:
    Mobile solar grill or solar cooker with a parabolic mirror of vanishingly elastic mirror foil, which is given its rotational paraboloidal shape during manufacture, for example by plastic deformation. In use, the mirror foil is held in its prefabricated form either by overpressure on the front or by negative pressure on the back. Due to the nonelastic properties of the mirror foil, the shape of the parabolic mirror is largely independent of the amount of pressure difference. This may be made by an air chamber formed with a transparent membrane at the front of the mirror foil in combination with a circular ring resting in a swinging frame of tent poles or by a cavity at the back which is enclosed by an inflatable hemispherical shell. Mounted in an inflatable annulus, the half ball shell forms a ball joint, in the fulcrum of which the focal point of the parabolic mirror comes to rest. A holder for the cooking utensil mounted here must also be kept during the tracking of the mirror after the sun's position is not moved.
    公开号:AT513404A1
    申请号:T525/2012
    申请日:2012-05-03
    公开日:2014-04-15
    发明作者:Fabian Massiczek；Clemens Lehner
    申请人:Clemens Lehner；
    IPC主号:
    专利说明:

    1; ···. ··: file number • · · ··· ··· ··· · · • · * ····· ·· ····· • · · · · ··· ··· ··· ··· ·· ·
    The invention relates to a solar grill or
    Solar cooker with a parabolic mirror made of foil and held in shape by air pressure, built into a carrier frame in lightweight construction, or in a completely inflatable frame. This makes it particularly suitable for mobile use.
    There are already a large number of solar cookers that work according to the principle of a sunlight-concentrating parabolic mirror. Their mirrors, however, consist of relatively heavy aluminum segments or other assembled or mated rigid mirror segments. This results in a large pack size, weight and long construction time, which makes them hardly suitable for mobile use.
    The invention is therefore based on the idea to replace the rigid mirror by an air-supported film, as well as the rigid frame by a support structure in lightweight construction (e.g.
    Tent pole system) or through a completely inflatable substructure. Thus, the solar cooker or solar grill can be quickly assembled and disassembled, small and packaged with little weight and taken everywhere, e.g. in public parks, where he also has the advantage over conventional charcoal grills that there is no risk of fire from him.
    For a long time various investigations have been made into pneumatic solar concentrators. To call here are DE 3030033 C2, US 1/20 2: * ··· ··; File Numbers • ················································································································································································································································································ As far as we are aware, however, none of them, either with regard to the design of the mirror membrane, the embedding in the support structure, the field of application or the type of tracking, is directly comparable with the invention proposed here or can fulfill its function.
    The invention will now be further explained with reference to two exemplary embodiments or variants, which are shown schematically in the accompanying figures.
    Fig.l shows a side view of the parabolic mirror of variant A in section,
    2 shows the parabolic mirror of variant A in the plan view,
    3 shows variant A with frame in a perspective view,
    4 shows variant B in the side view in section.
    Common to both variants is the formation of the parabolic mirror using a preformed mirror foil made of membranes or mirrored foil, which is held in shape by air pressure. The outer edge of the parabolic bowl is attached to the outside to absorb tensile forces to prevent the unwanted formation of the tire to a spherical shape. This is done via tabs 4 or via direct 2/20
    File number • · ································································································ · · · · · · ··· ·
    Attachment to a'bml'aufett & efi * Kfeisring 1, or on a hemispherical shell 15. During the production of the mirror surface already the shape of the later parabolic dish is set ("preshaped mirror"). The mirror foil 2 is not elastically extensible and is formed into the desired shape either as a whole by a thermal or other process during manufacture (convex, rotationally parabolic shape), or it is made up of plane-fit, planar, cut segments educated. The mirror segments can either be cut in the form of continuous pieces of isosceles triangles (radial segments) in the form of continuous pieces from the center to the outer circumference, or as tangentially encircling strips which each form the lateral surface of a truncated cone. Both possibilities are shown in FIG. 2 (left or right of the vertical symmetry axis). Other cuts are possible. In any case, the calculation of the sectional shapes always occurs in such a way that the closest possible approximation to the ideal paraboloid of revolution arises.
    There are now two variants: it is both possible to arrange a transparent membrane 3 on the upper side (ie the reflecting side) of the mirror foil 2, to connect airtight at the peripheral edge, and to introduce an overpressure into the resulting intermediate space (variant A), as well as the mirror film 2 3/20
    Reference numeral • ··· φ Ί · · · · · · φ φ φ φφφ ··· · · · φ φ · φφφφ φ φ · ···· φ φ φ φ · φ φ φ · by suppressing in e * inb * r floftlkämmdir 19 at the back of the mirror foil to keep in shape (variant B).
    Variant A is described in detail below:
    The trained according to the above features Pneu consisting of the preformed mirror membrane 2 and the transparent membrane 3 is clamped in a circumferential annulus 1 and secured thereto. This can be made both as a full and as a hollow rod and either in one piece or for the purpose of improved mobility of several pluggable items (for example, tent pole system). The bars (or bar members) may be elastic to some degree, or may consist of rigid, preformed materials. The foregoing applies to all rods used in construction.
    The tire is filled via a valve 5 and emptied to achieve the shape-stabilizing air pressure between the sheets 2 and 3. The attachment of the tire on the circular ring 1 via regularly arranged tabs. Alternatively, the connection can also be made via cords, hooks or direct integration of the annulus 1 into the tire.
    In Figure 3, the entire arrangement of the version A is shown. The main rod 6 has a continuous appearance. At the ends and in the middle are the three bearing points or
    Points of contact with the ground. Through the 4/20
    • · * ΒΦ ··· ♦ ·· ♦ · • · "% · «· ·
    File number
    Construction with three * lagerp * ühkt * s' a wobbling on uneven ground is avoided. In addition, the solar grill can be raised by raising the two rear feet, e.g. At crossbar 8, turn very lightly around the front support point in the middle of main rod 6 to track the solar grille in the azimuth of the sun.
    The two cross braces 7 and 8 provide stability. But they are just like additional tension in the form of strings and the like. (not shown) for stiffening the construction with a correspondingly fixed main bar 6 optional.
    The connecting pieces 9 include both the attachment points for the heat-resistant center rod 11 and the pivot joints 10. The center rod 11 has in its center of a fixed (or rotatable about the vertical axis) connection with the support rod 12 which at an angle of 90 ° to the central rod eleventh is aligned and with this a horizontal plane spans to form a secure base for the cookware.
    The connecting rods 13 are immovably connected to the circular ring 1, so that the entire mirror element can be pivoted about the pivot joints 10. The parabolic mirror is dimensioned so that its focal point comes exactly to lie on the axis of rotation, exactly centered above the mirror, whereby it remains stationary when pivoting the mirror. Thus, the focus is due to the central slight lowering of the center rod 11 slightly above the floor space of the 5/20
    File number • »· ···> 9 ·· ··· ·· • · ♦ ····· I # ····· • · · · · · · · Φ ·
    Cookware and soi * i * it ** in the middle of it, so that it is hit by all concentrated sunbeams.
    For fixing the mirror in the elevation angle, e.g. two adjustable in length cables 14 are used, which are mounted on the one hand on the circular ring 1, on the other hand to the main rod 6 approximately at the level of the crossbar 8. An optimal alignment is achieved when the connecting rods 13 point exactly to the sun, which can be checked by the shadow.
    In the following, version B, as shown in FIG. 4, is described in detail:
    The concentration of sunlight is carried out as in version A by a similarly manufactured parabolic mirror of non-elastically extensible mirror film 2. To enable manual tracking according to the state of the sun, the parabolic mirror 2 is embedded in a hemisphere 15 and connected airtight with her. The hemisphere is mounted in an inflatable annulus 16. Circular ring 16 and hemisphere 15 form a ball joint, which allows the orientation of the parabolic mirror 2 in each direction.
    The shape of the hemisphere 15 is formed by a hemisphere shell 17 filled with compressed air. Between the inner membrane 18 of the hemispherical shell 17 and the parabolic mirror 2, a cavity 19 is formed, in which by pumping out air or 6/20 7; ···· ··; Akten # # ♦ ········· 0 0 Φ Φ · ΦΦΦΦ Φ Φ ΦΦΦΦ Φ Φ Φ Φ φ Φ Φ Φ φ A reduced pressure is generated during the pumping of the hemisphere shell 17, which creates the membrane the parabolic mirror 2 holds tight and thus ensures that the mirror geometry is fixed in the concave shape defined by the production.
    The hemispherical shell 17 must be stabilized by appropriate webs or other connections between the outer and inner membrane. For this purpose, preferably drop stitch fabric is used, i. the outer membrane of the hemisphere 15 is connected to the inner membrane 18 by numerous threads which prevent bulging. Alternatively, the hemispherical shell 17 can be realized from a plurality of stacked circular rings with diameter decreasing towards the base, which are connected to one another in airtight manner in order to prevent air from penetrating into the cavity 19. Another possibility is an embodiment in many hoses, which are connected to each other according to the principle of the support rods of a geodesic dome or in a different structure. The spaces between the hoses are closed with a membrane to complete the cavity 19. This promises great stability with simultaneously reduced filling volume of the hemispherical shell 17, which results in a shortened inflation time, possibly with high pressure.
    The arrangement is dimensioned such that the center 20 of the hemisphere 15 - he is at the same time 7/20
    File number
    Fulcrum of the ball joint * -'fnilf d ^ m focal point 22 of the parabolic mirror 2 coincides. As a result, the focal point 22 always remains stationary, and the cookware (e.g., pan) positioned here does not have to be moved, regardless of the tracking of the mirror. Thus, it can rest on a simple, fixed mount 21. Alternatively, the holder for the cookware may also be attached directly to the tracked hemisphere, but this poses challenges to the design with respect to the horizontal orientation of the cookware with it.
    The bracket 21 represents the only rigid part of the version B solar grill. It is either anchored directly in the ground, e.g. stuck in the ground, has its own leg, or is connected to the annulus 16 accordingly, to ensure their stability.
    In order to prevent the hemispherical shell 17, together with the parabolic mirror 2, from being blown away from the circular ring 16 by the wind, it may be useful to weight it during use, e.g. with integrated water tanks. Also, an anchorage of the annulus 16 in the ground by means of herring and an easy to follow connection between the circular ring 16 and hemisphere 15 in the form of Velcro closures o.Ä. is possible.
    For the sake of clarity, a legend follows the reference numbers used in the figures: 8/20
    Reference numeral • φ ♦ # φ Q φφφφ ## φ φφφφφ ^ φφφ • φφφφφφφφφφφφφφφφφφφφφφφφφφφφφφφφφφφφφφφφφφφ
    Annulus ...........
    Mirror foil / membrane (rotational paraboloid)
    Transparent membrane
    mounting tabs
    Valve
    main bar
    Lower cross bracing Upper cross bracing connectors
    Swivel joints for tracking in the elevation angle
    Center rod Support rod Connecting rods Length adjustable cables Hemisphere or outer membrane Pneumatic annulus Hemisphere shell (overpressure)
    Inner Diaphragm Cavity (Squeeze) 9/20 ······ 1 Π ···· ·········································································· ···········································
    Reference 20 Center point of the saucer * l * 15 21 Holder for cookware 22 Focus of the parabolic mirror 2 10/20
    权利要求:
    Claims (8)
    [1]
    11. * · .. ··. J ..... ·% §25 / β £ 012 • · · ο ··· · · · ο · · · · & & & & Patent Patent Patent Patent Patent Patent Patent Patent Patent Patent Patent Patent Patent Patent Patent Patent Patent Patent Patent Patent Patent Patent Patent Patent · * * ·· *; 1. solar grill or solar cooker with pneumatically supported mirror optics, characterized in that the paraboloid of rotation of the mirror surface consists of a preformed mirror film (2) negligible in the corresponding pressure range elasticity, which by an overpressure located in front or a suppression located behind it in their predetermined form is held.
    [2]
    2. Parabolic mirror made of non-elastic mirror film according to claim 1, characterized in that the approach to the rotationsparaboloide shape by joining several segments non-elastic mirror film is made, for example, either similar acute-angled isosceles triangles in the form of continuous pieces from the center to the outer circumference, or as tangential circumferential strips, each forming the lateral surface of a truncated cone, and which are connected to each other airtight.
    [3]
    3. Parabolic mirror made of non-elastic mirror film according to claim 1, characterized in that the rotation paraboloidal shape of the non-elastic mirror film is produced by plastic deformation, such as by a thermal deep drawing process, so that the entire mirror surface can be produced from a single piece of film. 11/20 12 12 ·· ·· ···· ········ · · · · ·
    [4]
    4. Solar grill or solar cooker mif ^ DrT ^ uMhtl'sctt · ** supported mirror optics according to claim 1 and claim 2 or 3, characterized in that on the mirror side of the mirror film (2) a transparent membrane (3) is positioned, with which it is connected airtight at the peripheral edge, this arrangement via tabs (4), cords or other fastening systems with a circular ring (1) is connected, so that a valve (5) the mirror film (2) in its predetermined concave parabolic stabilizing overpressure can be introduced.
    [5]
    5. solar grill or solar cooker with pneumatically supported mirror optics according to claim 1 and 4 and claim 2 or 3, characterized in that the support frame substantially of a single continuous main rod (6), one of the cookware by means of a 90 ° twisted about the vertical axis rotatable support rod (12) carrying center rod, the optional cross braces (7,8), the sun tracking serving pivot joints (9) and the connecting rods (13), which hold the parabolic mirror at the appropriate distance from the axis of rotation, so that the focal point to lie on this, with all the rods, including the annulus (1), either preformed or elastic, are held by strings or corresponding textile elements in the form, and may consist of several zusammensteckbaren sections, as known from tent poles. 12/20 13th · *. . *.: ..... · $ £> 25 // £ 012 • · · · · · · · · · · · · · · · · · · ····· * ·
    [6]
    6. solar grill or solar cooker with ** prtfeifttiä table *** supported mirror optics according to claim 1 and claim 2 or 3, characterized in that the mirror film (2) is airtight connected at the edge with an inflatable hemisphere shell, so that in the cavity ( 19) inserted suppresses the mirror film (2) stabilized in its predetermined concave parabolic shape.
    [7]
    7. solar grill or solar cooker with pneumatically supported mirror optics according to claim 1 and 6 and claim 2 or 3, characterized in that the hemisphere shell 17 is preferably made of drop stitch factory, or that the outer membrane (15) and the inner membrane ( 18) are connected by numerous threads or webs which prevent bulging of the inner membrane (18).
    [8]
    8. solar grill or solar cooker with pneumatically supported mirror optics according to claim 1, 6 and 7 and claim 2 or 3, characterized in that the geometry of the arrangement is coordinated with each other such that the focal point (22) of the mirror film (2) with the rotation - And center (20) of the hemispherical shell (17) coincides, so that when a storage of the hemisphere (15) in a pneumatic annulus (16) regardless of Sonnennachführung a stationary holder for cookware (21) can be used. 13/20
    类似技术:
    公开号 | 公开日 | 专利标题
    US7708339B2|2010-05-04|Canopy frame particularly applicable to deck chairs, garden chairs, beach chairs and the like
    US20180008492A1|2018-01-11|Protective Cover for Wheelchair User
    AT513404A1|2014-04-15|Solar grill or cooker
    US8684458B2|2014-04-01|Swing with a folding back that automatically locks the swing
    US10477930B2|2019-11-19|Portable sun shade
    CN107990101A|2018-05-04|A kind of meeting tablet of tilt adjustable section
    US9187922B1|2015-11-17|Fence attachable awning
    CN206251699U|2017-06-16|Multi-functional branch supporting device
    CN204378545U|2015-06-10|Sun-shading and leisure bed chair
    KR20170000167A|2017-01-02|Tent Assembly
    AT515302B1|2015-08-15|relaxation furniture
    EP2722453B1|2015-10-07|Height-adjustable partition element
    EP3270735B1|2019-09-18|Outdoor seating furniture
    CN209498039U|2019-10-18|A kind of forest seedling nursing protective shed
    CN204191893U|2015-03-11|Expansion link and with the folding table of this expansion link for table pin
    JP4327890B1|2009-09-09|Hammock support device
    CN206314694U|2017-07-11|A kind of outdoor sun shade
    DE102015103049A1|2015-12-17|beach chair
    RU67408U1|2007-10-27|SOFA
    CN213308778U|2021-06-01|Tree-shaped flowerpot storage rack
    CN105768652B|2019-04-12|A kind of trapezoidal stool surface folding chair frame structure
    CN213343479U|2021-06-04|Multilayer spherical three-dimensional planting support
    CN205648543U|2016-10-19|Seedling hut
    CN205345215U|2016-06-29|Seat car
    TWI651492B|2019-02-21|Folding portable stove
    同族专利:
    公开号 | 公开日
    AT513404B1|2014-09-15|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    DE2643539A1|1976-09-28|1978-03-30|Johann Prof Dr I Kleinwaechter|Solar energy collector which tracks sun - has two parallel membranes internally air-pressurised as shaped reflector|
    EP0025834A2|1979-09-25|1981-04-01|Reymont Bertrand|Solar collector with a parabolic reflecting element|
    US4552126A|1984-04-10|1985-11-12|Boyd John O|Radiation concentrator|
    DE4009754A1|1988-04-11|1991-01-31|Paul Joachim|Solar concentrator - made of aluminised plastic foil and transparent plastic foil connected together at their peripheries|
    WO2010017594A1|2008-08-12|2010-02-18|Harry Hahn|Lightweight low-cost solar concentrator|
    DE102015223220A1|2015-06-30|2017-01-05|Karl Wohllaib Gmbh|Solar cooking device with a mirror for deflecting and bundling sunrays onto a heat sink|
    DE102016225931B4|2016-12-21|2019-11-07|Karl Wohllaib Gmbh|Solar cooking device|
    法律状态:
    2018-01-15| MM01| Lapse because of not paying annual fees|Effective date: 20170503 |
    优先权:
    申请号 | 申请日 | 专利标题
    ATA525/2012A|AT513404B1|2012-05-03|2012-05-03|Solar grill or cooker|ATA525/2012A| AT513404B1|2012-05-03|2012-05-03|Solar grill or cooker|
    [返回顶部]