JP2013029537A - Concentrator and concentration apparatus including the same - Google Patents

Concentrator and concentration apparatus including the same Download PDF

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JP2013029537A
JP2013029537A JP2011163462A JP2011163462A JP2013029537A JP 2013029537 A JP2013029537 A JP 2013029537A JP 2011163462 A JP2011163462 A JP 2011163462A JP 2011163462 A JP2011163462 A JP 2011163462A JP 2013029537 A JP2013029537 A JP 2013029537A
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base material
concentrator
receiving member
load receiving
reflecting portion
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Kazunori Yamazaki
和則 山崎
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Sumitomo Heavy Industries Ltd
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Sumitomo Heavy Industries Ltd
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Priority to JP2011163462A priority Critical patent/JP2013029537A/en
Priority to PCT/JP2012/062499 priority patent/WO2013014998A1/en
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    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B19/00—Condensers, e.g. light collectors or similar non-imaging optics
    • G02B19/0004—Condensers, e.g. light collectors or similar non-imaging optics characterised by the optical means employed
    • G02B19/0019—Condensers, e.g. light collectors or similar non-imaging optics characterised by the optical means employed having reflective surfaces only (e.g. louvre systems, systems with multiple planar reflectors)
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S23/00—Arrangements for concentrating solar-rays for solar heat collectors
    • F24S23/70—Arrangements for concentrating solar-rays for solar heat collectors with reflectors
    • F24S23/74—Arrangements for concentrating solar-rays for solar heat collectors with reflectors with trough-shaped or cylindro-parabolic reflective surfaces
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S25/00—Arrangement of stationary mountings or supports for solar heat collector modules
    • F24S25/10—Arrangement of stationary mountings or supports for solar heat collector modules extending in directions away from a supporting surface
    • F24S25/16—Arrangement of interconnected standing structures; Standing structures having separate supporting portions for adjacent modules
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S30/00—Arrangements for moving or orienting solar heat collector modules
    • F24S30/40—Arrangements for moving or orienting solar heat collector modules for rotary movement
    • F24S30/42—Arrangements for moving or orienting solar heat collector modules for rotary movement with only one rotation axis
    • F24S30/425—Horizontal axis
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B19/00—Condensers, e.g. light collectors or similar non-imaging optics
    • G02B19/0033—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use
    • G02B19/0038—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use for use with ambient light
    • G02B19/0042—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use for use with ambient light for use with direct solar radiation
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/08—Mirrors
    • G02B5/09—Multifaceted or polygonal mirrors, e.g. polygonal scanning mirrors; Fresnel mirrors
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/08—Mirrors
    • G02B5/10—Mirrors with curved faces
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S23/00—Arrangements for concentrating solar-rays for solar heat collectors
    • F24S23/70—Arrangements for concentrating solar-rays for solar heat collectors with reflectors
    • F24S2023/87—Reflectors layout
    • F24S2023/874—Reflectors formed by assemblies of adjacent similar reflective facets
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/40—Solar thermal energy, e.g. solar towers
    • Y02E10/47—Mountings or tracking

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Optical Elements Other Than Lenses (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide a concentrator capable of reducing the weight and a concentration apparatus including the same.SOLUTION: A trough-type concentrator 4 having a reflecting part 3 for concentrating solar beam to a linearly extending receiver 2 includes: a base 9 of resin on which the reflecting part 3 is disposed; a metal torque tube 10 which extends along the receiver 2 and is provided to the base 9 at the opposite side of the reflecting part 3; and plural metal ribs 11 extending along the base 9 in a direction crossing the torque tube 10 fixed to the base 9 and the torque tube 10. The base 9 has plural reinforcement rib-faces A having a polygonal grid shape at the opposite side of the reflecting part 3.

Description

本発明は、太陽光を集光する反射型の集光器及びこれを備えた集光装置に関する。   The present invention relates to a reflective concentrator that collects sunlight and a condensing device including the same.

近年、再生可能な自然エネルギーである太陽光の利用が広く検討されている。太陽光の利用には、太陽電池により直接電気に変換する手法と太陽光を吸収して太陽熱として利用する手法とが知られている。太陽熱の利用は半導体を用いないことから太陽電池に比べて初期投資を低く抑えられ、近年注目を再び集めている。このため、太陽熱を効率的に得られる集光装置の開発が世界各国で行われている。   In recent years, the use of sunlight, which is renewable natural energy, has been widely studied. For the use of sunlight, a method of directly converting to sunlight by a solar cell and a method of absorbing sunlight and using it as solar heat are known. Since the use of solar heat does not use semiconductors, the initial investment can be kept lower than that of solar cells. For this reason, development of the condensing device which can obtain solar heat efficiently is carried out in the world.

集光装置には、トラフ型、タワー型、ディッシュ型、フレネル型等が知られている。ここではトラフ型について説明する。トラフ型の集光装置は、直線状のレシーバに対して集光する樋状の集光器と、太陽の動きに合わせて集光器の向きを変えるための駆動機構と、を備えている。トラフ型の集光装置では、管状のレシーバ内部を熱輸送流体が流れており、集光によってレシーバが得た熱が熱輸送流体により輸送されることで、太陽熱の利用が行われる。   Known concentrators include trough, tower, dish, and Fresnel types. Here, the trough type will be described. The trough-type condensing device includes a bowl-shaped concentrator that condenses light on a linear receiver, and a drive mechanism that changes the direction of the concentrator in accordance with the movement of the sun. In the trough-type condensing device, the heat transport fluid flows inside the tubular receiver, and the heat obtained by the receiver by condensing is transported by the heat transport fluid, so that solar heat is used.

トラフ型の集光装置に備えられる集光器としては、太陽光を反射するガラス鏡を金属製の構造体で支持する構成のものが知られている（例えば、特許文献１，２参照）。特許文献１には、金属製の角パイプを枠組みしてなる構造体によりガラス鏡を支持する集光器が開示されている。   As a concentrator provided in the trough-type condensing device, a configuration in which a glass mirror that reflects sunlight is supported by a metal structure is known (for example, see Patent Documents 1 and 2). Patent Document 1 discloses a light collector that supports a glass mirror by a structure that is a framework of a metal square pipe.

特開昭５９−２３３０２号公報JP 59-23302 特開２００７−１６２６７１号公報JP 2007-162671 A

ところで、トラフ型集光装置の集光器は、強風を受けても変形しないように十分な強度を備える必要がある。一方で、強度を高めるために集光器の構造体の部材を増やしたり厚肉にしたりすると、集光器の製造コストが向上し、重量も増加してしまう。集光器の重量の増加は、駆動機構の大型化を招き、装置全体の製造コスト増加に繋がる。このため、集光器の軽量化が強く求められている。   By the way, the concentrator of the trough-type condensing device needs to have sufficient strength so as not to be deformed even under strong wind. On the other hand, if the number of members of the structure of the concentrator is increased or the thickness is increased in order to increase the strength, the manufacturing cost of the concentrator is improved and the weight is also increased. An increase in the weight of the concentrator leads to an increase in the size of the drive mechanism, leading to an increase in manufacturing cost of the entire apparatus. For this reason, the weight reduction of a collector is strongly calculated | required.

そこで、本発明は、軽量化を図ることができる集光器及びこれを備えた集光装置を提供することを目的とする。   Therefore, an object of the present invention is to provide a concentrator that can be reduced in weight and a condensing device including the same.

上記課題を解決するため、本発明は、直線状に延在するレシーバに対して集光する反射部を有するトラフ型の集光器であって、反射部が配置される樹脂製の基材と、基材に対して反射部の反対側に設けられ、レシーバに沿って延在する金属製のねじれ荷重受け部材と、ねじれ荷重受け部材と交差する方向で基材に沿って延在し、基材及びねじれ荷重受け部材に固定された曲げ荷重受け部材と、を備え、基材には、反射部と反対側に多角形格子状の補強リブ面が設けられていることを特徴とする。   In order to solve the above-mentioned problems, the present invention is a trough-type concentrator having a reflecting portion that condenses a linearly extending receiver, and a resin base material on which the reflecting portion is disposed; A metal torsion load receiving member provided on the opposite side of the reflecting portion with respect to the base material and extending along the receiver; and extending along the base material in a direction intersecting the torsion load receiving member; And a bending load receiving member fixed to the torsional load receiving member, and the base material is provided with a polygonal lattice-shaped reinforcing rib surface on the side opposite to the reflecting portion.

この集光器によれば、樹脂製の基材を採用することにより、金属製の場合と比べて大幅な軽量化を図ることができる。しかも、樹脂製の基材に多角形格子状の補強リブ面を設けることで、樹脂使用量を少なく抑えつつ十分な強度を確保することができる。更に、風等により集光器が受ける荷重をねじれ荷重受け部材及び曲げ荷重受け部材によって効率的に分担する構成とすることで、集光器の構造の簡素化及び軽量化を図りつつ、集光器の強度を確保することができる。また、ねじれ荷重受け部材及び曲げ荷重受け部材を備えることにより基材の強度的負担を軽減できるので、基材の薄型化及び軽量化を図ることができる。従って、この集光器によれば、従来品と比べて大幅な軽量化を図ることができる。   According to this concentrator, by adopting a resin base material, it is possible to achieve a significant weight reduction as compared with a metal case. In addition, by providing a polygonal lattice-shaped reinforcing rib surface on the resin base material, it is possible to ensure sufficient strength while suppressing the amount of resin used. Furthermore, the load received by the collector due to wind or the like is efficiently shared by the torsional load receiving member and the bending load receiving member, so that the structure of the collector is simplified and the weight is reduced. The strength of the vessel can be ensured. Moreover, since the torsional load receiving member and the bending load receiving member are provided, the strength burden on the base material can be reduced, so that the base material can be made thinner and lighter. Therefore, according to this concentrator, a significant weight reduction can be achieved as compared with the conventional product.

上記集光器においては、曲げ荷重受け部材は、当該曲げ荷重受け部材の延在方向において基材の両端に至っていても良い。
この集光器によれば、曲げ荷重受け部材が基材の端部まで至っているので、風等により基材の端部に荷重が加わっても、曲げ荷重受け部材が荷重を受けることができ、耐久性の向上を図ることができる。 In the said collector, the bending load receiving member may reach the both ends of a base material in the extension direction of the said bending load receiving member.
According to this concentrator, since the bending load receiving member reaches the end of the base material, even if a load is applied to the end of the base material by wind or the like, the bending load receiving member can receive the load, Durability can be improved.

上記集光器において、反射部は、フィルムミラーであっても良い。
この集光器によれば、反射部にフィルムミラーを採用することで、ガラスミラーを用いる場合と比べて、大幅な軽量化が可能になる。また、この集光器によれば、製造コスト増加の原因であったガラスの湾曲加工が不要となるので、集光器の製造コストの低減を図ることができる。 In the concentrator, the reflection part may be a film mirror.
According to this concentrator, by adopting a film mirror for the reflecting portion, it is possible to significantly reduce the weight as compared with the case of using a glass mirror. Moreover, according to this concentrator, since the glass bending process which was the cause of the increase in manufacturing cost becomes unnecessary, the manufacturing cost of the concentrator can be reduced.

上記集光器において、反射部は、厚さが０．０３ｍｍ〜１ｍｍの薄型ガラスミラーであっても良い。
この集光器によれば、反射部に強度を持たせる必要がないので、厚さが０．０３ｍｍ〜１ｍｍの薄型ガラスミラーを採用することにより、集光器の軽量化を図ることができる。 In the above concentrator, the reflecting portion may be a thin glass mirror having a thickness of 0.03 mm to 1 mm.
According to this concentrator, since it is not necessary to give strength to the reflecting portion, it is possible to reduce the weight of the concentrator by adopting a thin glass mirror having a thickness of 0.03 mm to 1 mm.

上記集光器において、基材は、射出成形又は圧縮成形により形成されてもよい。
この場合、補強リブ面を有する基材をワンプロセスで得ることができるので、製造効率を高くすることができ、大量生産に有利である。 In the concentrator, the base material may be formed by injection molding or compression molding.
In this case, since the base material having the reinforcing rib surface can be obtained in one process, the production efficiency can be increased, which is advantageous for mass production.

上記集光器において、基材は、アクリル、ポリカーボネート、ポリメチル、メタクレート、スチレン、ポリスチレンのうち何れかの材料からなるものであっても良い。
この集光器によれば、太陽光（特に紫外線）の耐性が高い樹脂により基材を形成することで、集光器の寿命向上を図ることができる。 In the concentrator, the base material may be made of any material of acrylic, polycarbonate, polymethyl, methacrylate, styrene, and polystyrene.
According to this concentrator, the lifetime of the concentrator can be improved by forming the base material with a resin having high resistance to sunlight (particularly ultraviolet rays).

上記集光器において、反射部及び基材には、反射部の正面側から基材における反射部の反対側へ抜ける風通しスリットが形成されていても良い。
この集光器によれば、風通しスリットにより集光器に吹き付ける風を通過させることができるので、風により集光器に加えられる荷重を大きく減らすことができる。従って、この集光器によれば、風に対する耐久性を向上させることができるので、集光器の寿命向上を図ることができる。 In the above concentrator, a ventilation slit that passes from the front side of the reflection part to the opposite side of the reflection part in the base material may be formed in the reflection part and the base material.
According to this concentrator, since the wind blown to the concentrator can be passed by the ventilation slit, the load applied to the concentrator by the wind can be greatly reduced. Therefore, according to this concentrator, since durability against wind can be improved, the life of the concentrator can be improved.

本発明に係る集光装置は、上記いずれかの集光器と、太陽の動きに合わせて当該集光器の向きを変える駆動機構と、を備えることを特徴とする。
この集光装置によれば、集光器の大幅な軽量化を図ることができるので、装置全体の軽量化が実現できる。従って、この集光装置によれば、集光器の軽量化により駆動機構に求められる出力が小さくなるので、駆動機構を小型なものとすることができ、装置の製造コストの低減を図ることができる。 The condensing apparatus which concerns on this invention is provided with one of the said concentrators, and the drive mechanism which changes the direction of the said concentrator according to a motion of the sun, It is characterized by the above-mentioned.
According to this condensing device, since the concentrator can be significantly reduced in weight, the entire device can be reduced in weight. Therefore, according to this condensing device, since the output required for the driving mechanism is reduced by reducing the weight of the concentrator, the driving mechanism can be made small, and the manufacturing cost of the device can be reduced. it can.

本発明によれば、軽量化を図ることができる。   According to the present invention, the weight can be reduced.

第１の実施形態に係る集光装置を示す斜視図である。It is a perspective view which shows the condensing apparatus which concerns on 1st Embodiment. 図１の集光装置を示す側面図である。It is a side view which shows the condensing apparatus of FIG. 図１の集光器を表側から見た斜視図である。It is the perspective view which looked at the concentrator of FIG. 1 from the front side. 図１の集光器を裏側から見た斜視図である。It is the perspective view which looked at the concentrator of FIG. 1 from the back side. 第２の実施形態に係る集光装置の集光器を示す斜視図である。It is a perspective view which shows the collector of the condensing apparatus which concerns on 2nd Embodiment.

以下、本発明の好適な実施形態について、図面を参照して詳細に説明する。   DESCRIPTION OF EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings.

［第１の実施形態］
図１に示されるように、第１の実施形態に係る集光装置１は、直線状に延在するレシーバ２と、レシーバ２に対して集光する樋状の反射部３を有する集光器４と、を多数備えたトラフ型の集光装置である。図１では、一列に並ぶ二台の集光器４を例示して説明を行う。各集光器４はレシーバ２を一本ずつ有しており、これらのレシーバ２はジョイントとして機能するレシーバ支持部材５によって連結されている。 [First Embodiment]
As shown in FIG. 1, the light concentrator 1 according to the first embodiment includes a receiver 2 that extends linearly and a bowl-shaped reflector 3 that condenses the receiver 2. 4 is a trough-type condensing device. In FIG. 1, two condensers 4 arranged in a row are illustrated and described. Each concentrator 4 has one receiver 2, and these receivers 2 are connected by a receiver support member 5 that functions as a joint.

トラフ型の集光装置１では、チューブ状のレシーバ２内部を熱輸送流体が流れており、集光器４の集光によりレシーバ２が得た熱が熱輸送流体によって輸送され、太陽熱として利用される。太陽熱は、例えば蒸気発電、給湯、蒸気供給、暖房空調、冷房空調（吸収式冷凍機の高温熱源）等に利用される。なお、レシーバ２は、レシーバ支持部材５を介して集光器４に固定されている。   In the trough-type condensing device 1, the heat transport fluid flows inside the tube-shaped receiver 2, and the heat obtained by the receiver 2 by the condensing of the concentrator 4 is transported by the heat transport fluid and used as solar heat. The Solar heat is used, for example, for steam power generation, hot water supply, steam supply, heating air conditioning, cooling air conditioning (high-temperature heat source of absorption chiller), and the like. The receiver 2 is fixed to the condenser 4 via the receiver support member 5.

図１及び図２に示されるように、集光装置１は、集光器４を回転可能に支持する支持台６と、太陽の動きに合わせて集光器４の向きを変える駆動機構７と、を備えている。支持台６は、集光器４の左右に配置されており、レシーバ２に平行な水平軸を回転中心として集光器４を回転可能に支持している。   As shown in FIGS. 1 and 2, the light collecting device 1 includes a support base 6 that rotatably supports the light collector 4, and a drive mechanism 7 that changes the direction of the light collector 4 in accordance with the movement of the sun. It is equipped with. The support bases 6 are disposed on the left and right sides of the condenser 4 and support the condenser 4 so as to be rotatable about a horizontal axis parallel to the receiver 2.

駆動機構７は、支持台６と集光器４との間に設けられ、集光器４を回転駆動させるものである。回転した集光器４の例を図２に一点鎖線で示す。駆動機構７には、電気式や油圧式等様々な機構のアクチュエータを採用することができる。なお、駆動機構７は、必ずしも集光器４を３６０度回転させる必要はなく、３６０度未満で揺動させる構成であっても良い。また、全ての支持台６に駆動機構７を設ける必要はない。   The drive mechanism 7 is provided between the support base 6 and the condenser 4 and rotates the condenser 4. An example of the rotated condenser 4 is shown by a one-dot chain line in FIG. The drive mechanism 7 can employ actuators of various mechanisms such as an electric type and a hydraulic type. The drive mechanism 7 does not necessarily need to rotate the condenser 4 360 degrees, and may be configured to swing at less than 360 degrees. Further, it is not necessary to provide the drive mechanism 7 on all the support bases 6.

図３及び図４に示されるように、集光器４は、太陽光を反射する樋状の反射部３と、反射部３が配置される基材９と、基材９の裏側（基材９に対して反射部３と反対側）に設けられたトルクチューブ１０と、基材９及びトルクチューブ１０に固定された金属リブ１１と、を備えている。   As shown in FIGS. 3 and 4, the concentrator 4 includes a bowl-shaped reflecting portion 3 that reflects sunlight, a base material 9 on which the reflecting portion 3 is disposed, and a back side of the base material 9 (base material). 9, a torque tube 10 provided on the side opposite to the reflecting portion 3), and a metal rib 11 fixed to the base material 9 and the torque tube 10.

反射部３は、樹脂フィルムに反射用の金属膜を形成したフィルムミラーである。樹脂フィルムの材料としては、アクリル、ポリエチレンテレフタラート、ポリエチレンナフタレート、ポリエチレン、ポリプロピレン等を用いることができる。また、金属膜の材料としては、銀やアルミニウム等を用いることができる。   The reflection part 3 is a film mirror in which a metal film for reflection is formed on a resin film. As a material for the resin film, acrylic, polyethylene terephthalate, polyethylene naphthalate, polyethylene, polypropylene, or the like can be used. Moreover, silver, aluminum, etc. can be used as a material of a metal film.

反射部３は、図２に示される集光装置１の側面方向から見て、レシーバ２を囲むように樋状に湾曲している。また、反射部３におけるレシーバ２と垂直な断面は、レシーバ２を焦点とした放物線形状をなしている。なお、反射部３は、必ずしも断面が放物線形状である必要はない。反射部３は、平面部分を有していても良く、いわゆるフレネル型のミラー形状等であっても良い。   The reflector 3 is curved in a bowl shape so as to surround the receiver 2 when viewed from the side surface direction of the light collector 1 shown in FIG. Further, a cross section perpendicular to the receiver 2 in the reflecting portion 3 has a parabolic shape with the receiver 2 as a focal point. Note that the reflecting section 3 does not necessarily have a parabolic cross section. The reflecting portion 3 may have a flat portion, or may be a so-called Fresnel type mirror shape.

基材９は、反射部３が配置される樹脂製の板状部材である。基材９は、直線状のレシーバ２を囲むように樋状に湾曲している。基材９は、例えばアクリル、ポリカーボネート、ポリメチル、メタクレート、スチレン、ポリスチレン等の材料から形成されている。集光装置１は、砂漠地域や乾燥地域など太陽光の影響の強い環境下で使用されるため、太陽光（特に紫外線）の耐性が高い樹脂から基材９を形成することで、集光器４の寿命向上を図ることができる。   The base material 9 is a resin plate-like member on which the reflecting portion 3 is disposed. The base material 9 is curved in a bowl shape so as to surround the linear receiver 2. The base material 9 is made of a material such as acrylic, polycarbonate, polymethyl, methacrylate, styrene, or polystyrene. Since the light concentrator 1 is used in an environment having a strong influence of sunlight, such as a desert region or a dry region, the concentrator is formed by forming the base material 9 from a resin having high resistance to sunlight (particularly ultraviolet rays). 4 can improve the service life.

また、基材９は、反射部３の樹脂材料と線膨張係数の近い樹脂材料から構成されている。このように、反射部３及び基材９が線膨張係数の近い樹脂材料から形成されることで、環境温度の変化に伴う熱変形により反射部３と基材９との間にストレスが発生することを避けることができる。このことは、集光器４の寿命向上に寄与する。   Moreover, the base material 9 is comprised from the resin material of the linear expansion coefficient with the resin material of the reflection part 3. FIG. As described above, since the reflecting portion 3 and the base material 9 are formed of a resin material having a close linear expansion coefficient, stress is generated between the reflecting portion 3 and the base material 9 due to thermal deformation accompanying a change in environmental temperature. You can avoid that. This contributes to the improvement of the lifetime of the condenser 4.

図３及び図４に示されるように、基材９及び反射部３は、１６個のミラーユニットに分けることができる。ミラーユニットは、基材９を構成する基材パネルの表面に反射部３を構成するミラー面が形成されたものである。基材９及び反射部３は、基材９の横方向（レシーバ２の延在方向）に並ぶ四個のミラーユニットを一列とした場合、四列のミラーユニットに分けられる。図３に四列のミラーユニットのミラー面の列３ａ〜３ｄを示す。また、図４に四列のミラーユニットの基材パネルの列９ａ〜９ｄを示す。   As shown in FIGS. 3 and 4, the base material 9 and the reflecting portion 3 can be divided into 16 mirror units. In the mirror unit, a mirror surface constituting the reflecting portion 3 is formed on the surface of a base material panel constituting the base material 9. The base material 9 and the reflection part 3 are divided into four rows of mirror units when four mirror units arranged in the lateral direction of the base material 9 (the extending direction of the receiver 2) are arranged in one row. FIG. 3 shows the rows 3a to 3d of the mirror surfaces of the four rows of mirror units. FIG. 4 shows the rows 9a to 9d of the base panel of the four rows of mirror units.

各ミラーユニットは、横方向及び縦方向で互いに連結されている。なお、各ミラーユニットは、熱変形等を考慮して横方向にのみ連結されていても良い。各ミラーユニットは、互いに分離可能に連結されている。   The mirror units are connected to each other in the horizontal direction and the vertical direction. Each mirror unit may be connected only in the lateral direction in consideration of thermal deformation and the like. Each mirror unit is connected so as to be separable from each other.

このように基材９及び反射部３を複数のミラーユニットから構成することで、一部に破損等が生じた場合であっても、破損の生じたミラーユニットのみを交換すれば良く、集光器４のメンテナンスを簡素化することができる。なお、ミラーユニットの数は１６に限られず、集光器４の大きさ等に応じて変更される。また、基材９及び反射部３は、必ずしも複数のミラーユニットから構成される必要はなく、一個のミラーユニットから構成されても良い。   Thus, by comprising the base material 9 and the reflecting part 3 from a plurality of mirror units, it is only necessary to replace the damaged mirror unit even if a part of the mirror 9 is damaged. Maintenance of the vessel 4 can be simplified. The number of mirror units is not limited to 16, but is changed according to the size of the condenser 4 and the like. Moreover, the base material 9 and the reflection part 3 do not necessarily need to be comprised from a some mirror unit, and may be comprised from one mirror unit.

基材９の裏側（基材９に対して反射部３と反対側）には、四角形格子状の補強リブ面Ａが形成されている。補強リブ面Ａは、基材９の裏側の面全体に形成されており、基材９の撓み発生を抑えるためのものである。補強リブ面Ａは、基材９の横方向に延びる横リブ１２と、横リブ１２に直交する縦リブ１３と、を有している。各ミラーユニットの補強リブ面Ａは、例えば５本の横リブ１２と３本の縦リブ１３とを有している。なお、補強リブ面Ａには、横リブ１２及び縦リブ１３に囲まれた基材９の裏面も含まれる。   On the back side of the base material 9 (on the side opposite to the reflecting portion 3 with respect to the base material 9), a reinforcing rib surface A having a quadrangular lattice shape is formed. The reinforcing rib surface A is formed on the entire back surface of the base material 9 and is for suppressing the occurrence of bending of the base material 9. The reinforcing rib surface A has a lateral rib 12 extending in the lateral direction of the base material 9 and a longitudinal rib 13 orthogonal to the lateral rib 12. The reinforcing rib surface A of each mirror unit has, for example, five horizontal ribs 12 and three vertical ribs 13. The reinforcing rib surface A includes the back surface of the base material 9 surrounded by the horizontal ribs 12 and the vertical ribs 13.

このような基材９は、射出成形や圧縮成形により形成される。例えば、射出成形において、溶融状に加熱した熱可塑性樹脂を射出機から金型内に射出した後、金型内で熱可塑性樹脂を固化させることにより基材９を形成することができる。   Such a base material 9 is formed by injection molding or compression molding. For example, in injection molding, the base material 9 can be formed by injecting a thermoplastic resin heated in a molten state into a mold from an injection machine and then solidifying the thermoplastic resin in the mold.

このように射出成形や圧縮成形により基材９を形成することにより、補強リブ面Ａを有する基材９をワンプロセスで得ることができる。その結果、基材９の製造効率を高くすることができるので、大量生産に有利である。なお、基材９の形成方法は、射出成形や圧縮成形の他、様々な方法を採用できる。例えば、高温エンボス加工により補強リブ面Ａを有する基材９を連続成形する態様であっても良い。   Thus, the base material 9 which has the reinforcing rib surface A can be obtained by one process by forming the base material 9 by injection molding or compression molding. As a result, the manufacturing efficiency of the substrate 9 can be increased, which is advantageous for mass production. In addition, the formation method of the base material 9 can employ | adopt various methods other than injection molding or compression molding. For example, the aspect which continuously shape | molds the base material 9 which has the reinforcement rib surface A by high temperature embossing may be sufficient.

基材９の裏側には、集光器４の強度を確保するためにトルクチューブ（ねじれ荷重受け部材）１０及び金属リブ（曲げ荷重受け部材）１１が設けられている。トルクチューブ１０は、レシーバ２に沿って横方向に延在する金属製の管状部材である。トルクチューブ１０は、集光器４に加わるねじれ荷重を受けるものである。このトルクチューブ１０は、支持台６の駆動機構７と連結されており、集光器４の回転中心に位置している。なお、必ずしもトルクチューブ１０を集光器４の回転中心とする必要はない。   On the back side of the base material 9, a torque tube (twisted load receiving member) 10 and a metal rib (bending load receiving member) 11 are provided in order to ensure the strength of the condenser 4. The torque tube 10 is a metal tubular member extending in the lateral direction along the receiver 2. The torque tube 10 receives a torsional load applied to the light collector 4. The torque tube 10 is connected to the drive mechanism 7 of the support base 6 and is located at the rotation center of the condenser 4. The torque tube 10 does not necessarily have to be the rotation center of the condenser 4.

金属リブ１１は、トルクチューブ１０と直交する方向（縦方向）で基材９の補強リブ面Ａに沿って延在する円弧状の板部材である。金属リブ１１は、集光器４に加わる縦方向の曲げ荷重を受けるものである。金属リブ１１は、基材９及びトルクチューブ１０と一体に固定されている。   The metal rib 11 is an arc-shaped plate member that extends along the reinforcing rib surface A of the substrate 9 in a direction (vertical direction) orthogonal to the torque tube 10. The metal rib 11 receives a vertical bending load applied to the light collector 4. The metal rib 11 is fixed integrally with the base material 9 and the torque tube 10.

金属リブ１１は、基材９に対して５枚配置されており、５枚の金属リブ１１の中心を貫いた状態でトルクチューブ１０が固定されている。基材９の左右両端に位置する２枚の金属リブ１１は、基材９を挟み込んだ状態でボルト止めされている。また、金属リブ１１には、軽量化のための孔部１１ａが各４箇所形成されている。   Five metal ribs 11 are arranged with respect to the base material 9, and the torque tube 10 is fixed in a state of passing through the centers of the five metal ribs 11. The two metal ribs 11 positioned at the left and right ends of the base material 9 are bolted with the base material 9 sandwiched therebetween. Further, the metal rib 11 is formed with four holes 11a for weight reduction.

これらの金属リブ１１は、金属リブ１１の延在方向（縦方向）において基材９の両端に至っている。このように、金属リブ１１が基材９の端部まで至っていることで、風等により基材９の端部に曲げ荷重が加わっても、金属リブ１１が荷重を受けることができ、集光器４の耐久性の向上が図られる。   These metal ribs 11 reach both ends of the base material 9 in the extending direction (vertical direction) of the metal ribs 11. Thus, even if a bending load is added to the edge part of the base material 9 by a wind etc. because the metal rib 11 has reached the edge part of the base material 9, the metal rib 11 can receive a load and light collection. The durability of the vessel 4 is improved.

以上説明した第１の実施形態に係る集光装置１の集光器４によれば、樹脂製の基材９を採用することにより、金属製の場合と比べて大幅な軽量化を図ることができる。しかも、樹脂製の基材９に四角形格子状の補強リブ面Ａを設けることで、樹脂使用量を少なく抑えつつ基材９の強度を十分に確保することができる。このような補強リブ面Ａは、樹脂製の基材９の一体成形により容易に形成することができるので、製造コスト低減に有利である。更に、風等により集光器４が受ける荷重をトルクチューブ１０及び金属リブ１１によって効率的に分担する構成とすることで、集光器４の構造の簡素化及び軽量化を図りつつ、集光器４の強度を確保することができる。また、トルクチューブ１０及び金属リブ１１を備えることにより基材の強度的負担を軽減できるので、基材９の薄型化及び軽量化を図ることができる。従って、この集光器４によれば、従来品と比べて大幅な軽量化を図ることができる。   According to the concentrator 4 of the concentrating device 1 according to the first embodiment described above, by adopting the resin base material 9, it is possible to achieve a significant weight reduction as compared with the case of metal. it can. Moreover, by providing the resin-made base material 9 with the rectangular lattice-shaped reinforcing rib surface A, the strength of the base material 9 can be sufficiently secured while suppressing the amount of resin used. Such a reinforcing rib surface A can be easily formed by integral molding of the resin base material 9, which is advantageous in reducing the manufacturing cost. Furthermore, by adopting a configuration in which the load received by the condenser 4 due to wind or the like is efficiently shared by the torque tube 10 and the metal rib 11, the structure of the condenser 4 is simplified and the weight is reduced while concentrating. The strength of the vessel 4 can be ensured. Moreover, since the torque burden of a base material can be reduced by providing the torque tube 10 and the metal rib 11, the base material 9 can be reduced in thickness and weight. Therefore, according to this concentrator 4, a significant weight reduction can be achieved as compared with the conventional product.

また、この集光器４によれば、反射部３にフィルムミラーを採用することで、ガラスミラーを用いる場合と比べて、大幅な軽量化が可能になる。更に、この集光器４によれば、製造コスト増加の原因であったガラスの湾曲加工が不要となるので、集光器４の低コスト化を図ることができる。   Further, according to the light collector 4, by adopting a film mirror for the reflecting portion 3, it is possible to significantly reduce the weight as compared with the case where a glass mirror is used. Furthermore, according to this concentrator 4, since the glass bending process which was the cause of the manufacturing cost increase becomes unnecessary, the cost of the concentrator 4 can be reduced.

従って、この集光装置１によれば、集光器４の大幅な軽量化を図ることができるので、集光装置１全体の軽量化が実現できる。また、この集光装置１では、集光器４の軽量化により駆動機構７に求められる出力が小さくなるので、駆動機構７を小型なものとすることができ、装置の製造コスト低減を図ることができる。   Therefore, according to this condensing apparatus 1, since the concentrator 4 can be significantly reduced in weight, the condensing apparatus 1 as a whole can be reduced in weight. Moreover, in this condensing device 1, since the output requested | required of the drive mechanism 7 becomes small by the weight reduction of the collector 4, the drive mechanism 7 can be made small and the manufacturing cost of an apparatus is aimed at. Can do.

［第２の実施形態］
図５に示されるように、第２の実施形態に係る集光装置の集光器２０は、第１の実施形態に係る集光器４と比べて、風通しスリットＳを有している点が主に相違する。 [Second Embodiment]
As shown in FIG. 5, the light collector 20 of the light collector according to the second embodiment has a ventilation slit S compared to the light collector 4 according to the first embodiment. Mainly different.

第２の実施形態に係る集光器２０では、反射部３の正面側から基材９の裏側へ抜ける横長の風通しスリットＳが反射部２１及び基材２２に形成されている。風通しスリットＳは、反射部２１及び基材２２を構成する四列のミラーユニットの間にそれぞれ形成されている。図３に四列のミラーユニットのミラー面の列２１ａ〜２１ｄを示す。   In the concentrator 20 according to the second embodiment, a horizontally long slit S that extends from the front side of the reflecting unit 3 to the back side of the substrate 9 is formed in the reflecting unit 21 and the substrate 22. The ventilation slits S are respectively formed between the four rows of mirror units constituting the reflecting portion 21 and the base material 22. FIG. 3 shows rows 21a to 21d of the mirror surfaces of the four rows of mirror units.

この第２の実施形態に係る集光器２０によれば、風通しスリットＳにより集光器２０に吹き付ける風を通過させることができるので、風により集光器２０に加えられる荷重を大きく減らすことができる。従って、この集光器２０によれば、風に対する耐久性を向上させることができるので、集光器２０の寿命向上が図られる。   According to the collector 20 according to the second embodiment, the wind blown to the collector 20 can be passed by the ventilation slit S, so that the load applied to the collector 20 by the wind can be greatly reduced. it can. Therefore, according to this concentrator 20, since durability with respect to wind can be improved, the life of the concentrator 20 can be improved.

本発明は、上述した実施形態に限定されるものではない。   The present invention is not limited to the embodiment described above.

本発明に係る集光装置は、様々な用途に活用することができる。例えば、太陽熱発電の他、レシーバ２に太陽電池を配置することにより、集光型の太陽光発電装置として活用することもできる。   The condensing device according to the present invention can be utilized for various applications. For example, in addition to solar thermal power generation, a solar cell may be disposed in the receiver 2 to be used as a concentrating solar power generation device.

また、反射部３においてフィルムミラーに代えて薄型ガラスミラーを採用しても良い。本発明によれば、反射部３に強度を持たせる必要がないので、厚さが０．０３ｍｍ〜１ｍｍの薄型ガラスミラーを採用することにより、集光器４の軽量化を図ることができる。なお、反射部２１に薄型ガラスミラーを採用した場合も同様である。   Further, a thin glass mirror may be employed in the reflecting portion 3 instead of the film mirror. According to the present invention, since it is not necessary to give the reflecting portion 3 strength, the light collector 4 can be reduced in weight by adopting a thin glass mirror having a thickness of 0.03 mm to 1 mm. The same applies to the case where a thin glass mirror is employed for the reflecting portion 21.

また、基材９の形状は、実施形態で示したものに限られない。例えば、基材９は、一部がフレーム形状等であっても良く、反射部３を適切に支持できる形状であれば良い。また、基材９は、接着剤により反射部３と接着されている構成であっても良く、機械的に反射部３を把持する構成であっても良い。   Moreover, the shape of the base material 9 is not restricted to what was shown by embodiment. For example, the base material 9 may partially have a frame shape or the like, and may be any shape that can appropriately support the reflecting portion 3. Moreover, the base material 9 may be configured to be bonded to the reflective portion 3 with an adhesive, or may be configured to mechanically grip the reflective portion 3.

また、補強リブ面Ａの形状は、四角形格子状に限られず多角形格子状であれば良い。例えば補強リブ面Ａの形状は、三角形格子状であっても良く、五角形格子状、六角形格子状等であっても良い。また、三角形や四角形等が組み合わされた格子の形状であっても良い。その他、基材９を補強できる構造であれば、必ずしも格子である必要はなく、四角形格子状等に類似する形状であっても良い。また、実施形態では、基材９の裏側全体に補強リブ面Ａが設けられているが、一部のみに補強リブ面Ａが設けられている態様であっても良い。   Further, the shape of the reinforcing rib surface A is not limited to the quadrangular lattice shape, and may be a polygonal lattice shape. For example, the reinforcing rib surface A may have a triangular lattice shape, a pentagonal lattice shape, a hexagonal lattice shape, or the like. Moreover, the shape of the grating | lattice which combined the triangle, the square, etc. may be sufficient. In addition, as long as the base material 9 can be reinforced, the base material 9 is not necessarily a lattice, and may have a shape similar to a rectangular lattice shape. In the embodiment, the reinforcing rib surface A is provided on the entire back side of the base material 9, but the reinforcing rib surface A may be provided on only a part thereof.

また、特許請求の範囲に記載のねじれ荷重受け部材の形状は、必ずしもトルクチューブ１０の形状である必要はない。ねじれ荷重受け部材は、丸棒や多角柱、板状、その他の様々な形状であっても良く、基材９に加わるねじれ荷重を受けられる形状であれば良い。   Further, the shape of the torsion load receiving member described in the claims does not necessarily need to be the shape of the torque tube 10. The torsion load receiving member may be a round bar, a polygonal column, a plate shape, or other various shapes, and may be any shape that can receive a torsion load applied to the substrate 9.

同様に、特許請求の範囲に記載の曲げ加重受け部材は、必ずしも金属製である必要はなく、樹脂製であっても良い。また、曲げ加重受け部材は、ねじれ荷重受け部材と直交する方向に限られず、ねじれ荷重受け部材と交差する方向に延在する構成であれば良い。曲げ加重受け部材の形状も金属リブ１１の形状に限られず、基材９に加わる曲げ荷重を受けられる形状であれば良い。   Similarly, the bending load receiving member described in the claims is not necessarily made of metal, and may be made of resin. Further, the bending load receiving member is not limited to the direction orthogonal to the torsion load receiving member, and may be configured to extend in the direction intersecting with the torsion load receiving member. The shape of the bending load receiving member is not limited to the shape of the metal rib 11 and may be any shape that can receive a bending load applied to the base material 9.

また、第２の実施形態に示す風通しスリットＳは、一箇所又は二箇所のみであっても良く、四箇所以上形成されていても良い。また、風通しスリットＳは、横方向に長く形成される必要はなく、縦方向や斜め方向に長く形成されても良い。また、風通しスリットＳの形状は、長方形状の他、楕円形状等であっても良い。   Moreover, the ventilation slit S shown to 2nd Embodiment may be only one place or two places, and may be formed four or more places. Moreover, the ventilation slit S does not need to be formed long in the horizontal direction, and may be formed long in the vertical direction or the oblique direction. Further, the shape of the ventilation slit S may be an elliptical shape in addition to the rectangular shape.

１…集光装置 ２…レシーバ ３，２１…反射部 ３ａ-３ｄ，２１ａ-２１ｄ…ミラー面の列 ４，２０…集光器 ５…レシーバ支持部材 ６…支持台 ７…駆動機構 ９，２２…基材 ９ａ-９ｄ…基材パネルの列 １０…トルクチューブ（ねじれ荷重受け部材） １１…金属リブ（曲げ荷重受け部材） １２…横リブ １３…縦リブ ２１…反射部 Ａ…補強リブ面 Ｓ…風通しスリット   DESCRIPTION OF SYMBOLS 1 ... Condensing apparatus 2 ... Receiver 3,21 ... Reflection part 3a-3d, 21a-21d ... Row | line | column of mirror surface 4,20 ... Condenser 5 ... Receiver support member 6 ... Support stand 7 ... Drive mechanism 9,22 ... Base material 9a-9d ... Row of base panel 10 ... Torque tube (torsion load receiving member) 11 ... Metal rib (bending load receiving member) 12 ... Horizontal rib 13 ... Vertical rib 21 ... Reflecting portion A ... Reinforcing rib surface S ... Ventilation slit

Claims (8)

直線状に延在するレシーバに対して集光する反射部を有するトラフ型の集光器であって、
前記反射部が配置される樹脂製の基材と、
前記基材に対して前記反射部の反対側に設けられ、前記レシーバに沿って延在する金属製のねじれ荷重受け部材と、
前記ねじれ荷重受け部材と交差する方向で前記基材に沿って延在し、前記基材及び前記ねじれ荷重受け部材に固定された曲げ荷重受け部材と、を備え、
前記基材には、前記反射部と反対側に多角形格子状の補強リブ面が設けられていることを特徴とする集光器。 A trough-type concentrator having a reflecting portion that condenses the linearly extending receiver,
A resin base material on which the reflective portion is disposed;
A metal torsion load receiving member provided on the opposite side of the reflecting portion with respect to the base material and extending along the receiver;
A bending load receiving member extending along the base material in a direction crossing the torsion load receiving member, and fixed to the base material and the torsion load receiving member,
The collector is characterized in that a polygonal rib-shaped reinforcing rib surface is provided on the substrate on the side opposite to the reflecting portion. 前記曲げ荷重受け部材は、当該曲げ荷重受け部材の延在方向において前記基材の両端に至っていることを特徴とする請求項１に記載の集光器。   The concentrator according to claim 1, wherein the bending load receiving member reaches both ends of the base material in an extending direction of the bending load receiving member. 前記反射部は、フィルムミラーであることを特徴とする請求項１又は２に記載の集光器。   The concentrator according to claim 1, wherein the reflecting portion is a film mirror. 前記反射部は、厚さが０．０３ｍｍ〜１ｍｍの薄型ガラスミラーであることを特徴とする請求項１又は２に記載の集光器。   The concentrator according to claim 1 or 2, wherein the reflecting portion is a thin glass mirror having a thickness of 0.03 mm to 1 mm. 前記基材は、射出成形又は圧縮成形により形成されることを特徴とする請求項１〜４の何れか一項に記載の集光器。   The said base material is formed by injection molding or compression molding, The concentrator as described in any one of Claims 1-4 characterized by the above-mentioned. 前記基材は、アクリル、ポリカーボネート、ポリメチル、メタクレート、スチレン、ポリスチレンのうち何れかの材料からなることを特徴とする請求項１〜５の何れか一項に記載の集光器。   The said base material consists of any materials among an acryl, a polycarbonate, a polymethyl, a methacrylate, styrene, and a polystyrene, The collector as described in any one of Claims 1-5 characterized by the above-mentioned. 前記反射部及び前記基材には、前記反射部の正面側から前記基材における前記反射部の反対側へ抜ける風通しスリットが形成されていることを特徴とする請求項１〜６の何れか一項に記載の集光器。   The ventilation part which escapes from the front side of the said reflection part to the other side of the said reflection part in the said base material is formed in the said reflection part and the said base material, The any one of Claims 1-6 characterized by the above-mentioned. Concentrator according to item. 請求項１〜７の何れか一項に記載の集光器と、太陽の動きに合わせて当該集光器の向きを変える駆動機構と、を備えることを特徴とする集光装置。   A condensing apparatus comprising: the concentrator according to any one of claims 1 to 7; and a drive mechanism that changes a direction of the concentrator in accordance with movement of the sun.
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