Solar light collecting device and solar heat collecting facility
| Title: | Solar light collecting device and solar heat collecting facility |
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| Patent Number: | 9,103,566 |
| Publication Date: | August 11, 2015 |
| Appl. No: | 13/521852 |
| Application Filed: | December 22, 2010 |
| Abstract: | A solar light collecting device includes: a rectangular-shaped frame-like body 22 supported by a strut body 21 so as to be tiltable in a vertical plane; a flexible reflecting mirror 24 having two side edges 22a held by the frame-like body 22 and a quasi-parabolic cross section along the short sides thereof to reflect solar light; and a tilting cylinder device 25 which tilts the frame-like body 22 according to the altitude of the sun and guides the light reflected by the reflecting mirror 24 to a heat collecting device disposed at the focal point of the reflecting surface of the reflecting mirror. A curve adjusting device 27 contacts the rear surface of the reflecting mirror 24 according to the tilting position of the reflecting mirror 24 to change the degree of curve of the reflecting surface. |
| Inventors: | Kosaka, Hiroshi (Osaka, JP); Imoto, Hirokazu (Osaka, JP); Takemoto, Keisuke (Osaka, JP) |
| Assignees: | Hitachi Zosen Corporation (Osaka, JP) |
| Claim: | 1. A solar light collecting device comprising: a tilting body provided on a support frame so as to be tiltable in a vertical plane; a reflecting mirror which is supported by the tilting body, has a reflecting surface with a parabolic or quasi-parabolic cross section, and is capable of reflecting solar light to a heat collecting device; and a tilting device which tilts the tilting body according to an altitude of the sun to introduce the light reflected by the reflecting mirror to the heat collecting device disposed at a focal point of the reflecting surface, wherein the reflecting mirror is rectangular-shaped in plan view and is made of a flexible material, the solar light collecting device further comprises a curve adjusting device which is disposed below the reflecting mirror and changes a degree of curve of the reflecting surface of the reflecting mirror according to a tilting position of the tilting body, a frame-like body is provided as the tilting body to support the reflecting mirror, and the curve adjusting device comprises: a plurality of swing members which are swingably provided on two sides of the frame-like body in the vertical plane; left and right support coupling members which couple upper ends of the swing members on the two sides to each other and are capable of supporting side edges of the reflecting mirror; coupling members which couple the left and right swing members to each other; bar-like moving bodies which are movably provided on the frame-like body and have one ends coupled to the coupling members; contact members which are provided on other ends of the bar-like moving bodies; urging members which are provided on the bar-like moving members to urge the bar-like moving bodies toward the contact members; and a guide body which is capable of moving up or down the left and right support coupling members which couple the swing members to change the degree of curve of the reflecting surface of the reflecting mirror by contacting the contact members on the bar-like moving bodies to move the bar-like moving bodies to move up or down the left and right support coupling members. |
| Patent References Cited: | 2825326 March 1958 Flynn, Jr. 3973834 August 1976 Penn et al. 4243301 January 1981 Powell 4318394 March 1982 Alexander 4483323 November 1984 Murphy 4487196 December 1984 Murphy 4511215 April 1985 Butler 4552438 November 1985 Murphy 4719903 January 1988 Powell 5035497 July 1991 Itoh 5997146 December 1999 Denham et al. 6984050 January 2006 Nakamura 6994082 February 2006 Hochberg et al. 2009/0272375 November 2009 Pedretti 101457991 June 2009 56-54401 May 1981 2003-124741 April 2003 2004-037037 May 2004 2008-503709 February 2008 WO 2006/000834 January 2006 |
| Other References: | Office Action issued in corresponding Japanese Patent Application No. 2011-549895, Apr. 15, 2014. cited by applicant Office Action (dated Jul. 29, 2013) issued in connection with corresponding Chinese Patent Application No. 2010-80053963.8, including English translation. cited by applicant International Search Report for International Application No. PCT/JP2010/073081, Mar. 8, 2011. cited by applicant |
| Assistant Examiner: | Lau, Jason |
| Primary Examiner: | Rinehart, Kenneth |
| Attorney, Agent or Firm: | Kusner & Jaffe |
| Accession Number: | edspgr.09103566 |
| Database: | USPTO Patent Grants |
| Language: | English |
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