Solar heat collecting device

Patent metadata

Field	Value
Publication number	US-9291368-B2
Application number	US-201113991017-A
Country	US
Kind code	B2
Filing date	Nov 9, 2011
Priority date	Dec 1, 2010
Publication date	Mar 22, 2016
Grant date	Mar 22, 2016

Abstract

[Problem] To present a solar heat collecting device capable of enhancing the heat collecting efficiency by effectively utilizing the sunlight entering an area near the end part of the reflector at the opposite side of the direction of location of the sun.
[Solving Means] In the solar heat collecting device for collecting the reflected light of sunlight Sb 1 , Sb 2 entering a trough type reflector 1 having a parabolic section to a heat collecting pipe 2 erected at a position of focus of the reflector 1 , and transmitting energy to a heat medium passing inside of the heat collecting pipe 2 , the solar heat collecting device is installed so that central axis L 1 of the reflector 1 may be directed along the north-south axis, and a plane reflector 3 is disposed orthogonally to central axis L 1 , at the end part of the reflector 1 at the opposite side of the direction of location of the sun.

First claim

The invention claimed is:

1. A solar heat collecting device for collecting the reflected light of sunlight entering a trough type reflector having a parabolic section to a heat collecting pipe erected at a position of focus of the reflector, and transmitting energy to a heat medium passing inside of the heat collecting pipe, wherein the solar heat collecting device is installed so that a central axis of the reflector may be directed along the north-south axis, and a plane reflector is disposed orthogonally to the central axis, at the end part of the reflector at the opposite side of the direction of location of the sun,
the solar heat collecting device further comprising a high-pressure air injection mechanism for injecting a high-pressure air for cleaning along the incident plane of sunlight of the reflector, wherein along a frame member supporting the incident plane of sunlight of the reflector, pipe members forming multiple nozzle holes for injecting high-pressure air for cleaning of the high-pressure injection mechanism are disposed.

2. The solar heat collecting device according to claim 1 , wherein a drive mechanism is provided for rotating the oscillation axis for oscillating the incident plane of sunlight of the reflector through the oscillation axis on a platform, so that the incident plane may be directed perpendicularly or the incident plane may be directed downward, and a high-pressure air for cleaning is injected from the high-speed air injection mechanism with the incident plane being directed perpendicularly or the incident plane being directed downward.

3. A solar heat collecting device for collecting the reflected light of sunlight entering a Fresnel mirror type reflector composed of a plurality of long plane division mirrors, to a heat collecting pipe erected at a position of focus of the reflector, and transmitting energy to a heat medium passing inside of the heat collecting pipe, wherein the solar heat collecting device is installed so that a central axis of the reflector may be directed along the north-south axis, and a plane reflector is disposed orthogonally to the central axis, at the end part of the reflector at the opposite side of the direction of location of the sun,
the solar heat collecting device further comprising a high-pressure air injection mechanism for injecting a high-pressure air for cleaning along the incident plane of sunlight of the reflector, wherein along a frame member supporting the incident plane of sunlight of the reflector, pipe members forming multiple nozzle holes for injecting high-pressure air for cleaning of the high-pressure injection mechanism are disposed.

4. The solar heat collecting device according to claim 3 , wherein a drive mechanism is provided for rotating the oscillation axis for oscillating the incident plane of sunlight of the reflector through the oscillation axis on a platform, so that the incident plane may be directed perpendicularly or the incident plane may be directed downward, and a high-pressure air for cleaning is injected from the high-speed air injection mechanism with the incident plane being directed perpendicularly or the incident plane being directed downward.

Assignees

• Kawane Shinichirou
• Yoshida Jun
• Kawamura Munenori
• Ueda Hironobu
• Hitachi Ltd
• Hitachi Plant Mechanics Co Ltd

Inventors

• Kawane Shinichirou
• Yoshida Jun
• Kawamura Munenori
• Ueda Hironobu

Classifications

• Y02E10/47

  Mountings or tracking · CPC title

• F24S50/20 Primary

  for tracking · CPC title

• F24S30/425

  Horizontal axis · CPC title

• F24S23/79

  with spaced and opposed interacting reflective surfaces · CPC title

• F24S2030/18

  Load balancing means, e.g. use of counter-weights · CPC title