JP2011027375A - Solar heat collector - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an inexpensive air heating type solar heat collector capable of being easily installed on a building. <P>SOLUTION: A translucent plate 1 is disposed at a light receiving face side of a rectangular parallelepiped housing disposed vertically or at an angle near verticalness, a first heat collecting plate 3 having a number of pores is disposed at an interval from the translucent plate, and an imperforate second heat collecting plate 6 shorter than the first heat collecting plate 3 is disposed at the back of the first heat collecting plate at a prescribed interval with a clearance gap at its upper section. A space vertically divided into two is formed at the back of the second heat collecting plate 6, an air supply port 9 for taking the air from the external is formed at the lower space 8, an air straightening plate 11 is disposed in the upper space 10, and an exhaust port 12 is formed at its lower part. An air blower 7 is disposed under two sheets of heat collecting plates so that the air flows in parallel along the heat collecting plates to the interval between the translucent plate 1 and the first heat collecting plate 3. The air is heated while evenly kept into contact with two sheets of heat collecting plates, distributed to the upper space 10 formed at the back of the second heat collecting plate 6, and distributed to the exhaust port 12 through a side part of the upper space 10 by the air straightening plate 11. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

The present invention relates to a solar heat collecting apparatus that eliminates unevenness in air contact with a heat collecting plate and reduces heat collecting loss by rectifying the air flow inside the apparatus.

As a solar heat collecting device for heating conventional air installed on a roof or a wall surface in order to raise the temperature inside a building, for example, as in JP 2000-130860, JP 2001-235236, a rectangular parallelepiped A light-transmitting plate is provided on the light-receiving surface of the housing, a heat collecting plate with a multi-hole structure is arranged inside it, external air is taken in from an air supply port provided at the lower back of the housing, and heat is simultaneously generated when air passes through the hole There is a solar heat collecting apparatus that replaces and supplies heated air from an exhaust port provided at the upper back of the heat collecting plate.

In addition, as in JP 2002-340418 and JP 2003-314901, a rectangular parallelepiped housing is spaced from a heat collecting plate having a plurality of slit-shaped holes, and a light transmitting plate is provided on the light receiving surface side. There is a solar heat collecting apparatus having a structure in which an air supply port is provided between a light transmission plate and a heat collecting plate, and an exhaust port is provided on the opposite surface of the air supply port and on the back surface of the heat collecting plate.

However, when installing in a building, it is often connected from the inside to the air inlet / outlet of the solar heat collector using pipe piping, duct piping, etc., and conveys air. In the case of the structures of 130860 and 2001-235236, the air flow inside the solar heat collector is concentrated on the shortest path connecting the air supply port and the exhaust port as shown in FIG.

As the distance from the shortest path between the air supply port and the exhaust port increases, the amount of air movement decreases, the air contact amount decreases, and the heat collection efficiency of the heat collection device decreases.

In addition, in the case of JP 2002-340418 A and JP 2003-314901 A, since the openings of the air supply port and the exhaust port are both the same size as the heat collecting plate, the above-mentioned problem does not occur, When transporting air using pipe piping and duct piping at the air supply and exhaust ports, it is necessary to match the shape of the opening to connect the pipe piping, duct piping and solar heat collector, and there is an air rectification mechanism There was a problem that a dedicated connector was required.

The present invention solves the above-described problems, and provides a solar heat collector that does not decrease the heat collection efficiency even when the heat collector is easily processed to reduce costs, improve workability, and increase the size.

Such a problem includes a heat collecting plate provided with a non-permeable translucent plate on the light receiving surface side of a rectangular parallelepiped housing, which is installed at an angle close to or perpendicular to the vertical shape, and a predetermined number of holes on the rear surface. A solar heat collecting panel having a double structure consisting of a non-porous heat collecting plate shorter than the heat collecting plate is arranged at a predetermined interval from the light transmitting plate so that a gap is provided at an upper portion with a gap. A blower capable of flowing an air flow in a flat shape is arranged under the solar heat collecting panel, and a space divided into two parts is provided on the back of the blower, and a lower space is connected to the back of the housing. The problem is solved by providing an air vent, providing an exhaust port leading to the back of the housing in the upper space, and disposing an air rectifying plate thereon so that the air flow is diverted to the side of the upper space.

Even when the solar heat collecting apparatus of the present invention transports air using pipe piping and duct piping to the air inlet, the air taken in and exhausted by the blower incorporated in the solar heat collector. Without concentrating on the shortest path of the mouth, it can be sent evenly into the space in front of the solar thermal collector panel. As a result, the amount of air contact becomes uniform with respect to the solar heat collection panel, and the heat collection efficiency can be increased.

In addition, the solar heat collecting panel with a double structure is configured to receive the sunlight transmitted through the heat collecting plate on the light receiving surface side with a small hole by the non-porous heat collecting plate, and at the same time, the space divided into the upper and lower parts of the back part. It becomes a gap. Therefore, all the air from the air supply opening provided in the lower space of the back portion is sent to the front surface of the solar heat collection panel and moves to the upper space of the back portion while contacting the solar heat collection panel. Since the air that has moved to the upper space behind the back has an air baffle, the shortest path to the exhaust port is blocked, the air is diverted to the side of the upper space, and can be concentrated on the exhaust port without staying inside the device. . As a result, it is possible to suppress a decrease in heat collection efficiency even if the apparatus is enlarged.

Next, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a perspective view of a solar heat collecting apparatus in an embodiment of the present invention. FIG. 2 shows a sectional view of the solar heat collecting apparatus of the present invention. 1 and 2, the solid line arrows represent the air flow, and the broken line arrows represent sunlight.

In the solar heat collecting apparatus of the present invention, the light-receiving surface side of a sealed rectangular parallelepiped housing is provided with a non-porous light-transmitting plate 1 such as glass or polycarbonate, with a predetermined interval 2 from the light-transmitting plate, and the light-receiving surface side A first heat collecting plate 3 made of a metal made of a metal such as aluminum or stainless steel colored in black is provided with a large number of small holes. A predetermined interval 4 is provided at the back of the first heat collecting plate 3, and a second heat collecting plate 6 made of a non-porous plate made of metal such as aluminum or stainless steel colored with a black color on the light receiving surface side is disposed. The second heat collecting plate 6 is shorter than the first heat collecting plate 3 so that an upper gap 5 is opened.

The sunlight that has passed through the first heat collecting plate 3 is received by the second heat collecting plate 6 and collected to increase the heat collecting efficiency.

A blower 7 such as a cross flow fan or a line flow fan capable of flowing an air flow in a plane is disposed under the double-layer solar heat collecting panel using the two heat collecting plates. The back part of the heat collecting plate 6 is provided with a space that is divided into two parts, upper and lower, and an air supply port 9 that can be connected to pipe piping or duct piping through the rear surface of the housing in the lower space 8. An air rectifying plate 11 is disposed in the upper space 10, and an exhaust port 12 that can be connected to pipe piping or duct piping is provided below the air rectifying plate 11 below the casing. The air rectifying plate 11 is shorter than the width of the upper space 10 and is arranged so that air from the upper gap 5 bypasses the inner side of the upper space 10 and flows to the exhaust port 12.

The air taken in from the air supply port 9 is sent uniformly to the solar heat collection panel by the blower 7 in front of the solar heat collection panel. It is sent.

Since the air moves from the upper gap 5 to the upper space 10 and is blocked by the air rectifying plate 11 as shown in FIG. 4, the air passes through the side of the upper space 10 and then passes from the exhaust port 12 to the outside of the apparatus. Is released.

As a result, air can travel to the exhaust port 12 without staying in the upper space 10, and even if the apparatus is enlarged, the solar heat collection efficiency is not lowered.

The perspective view which shows the solar heat collecting device of this invention Sectional drawing which shows the solar thermal collector of this invention Air flow in a conventional solar collector Air flow in the upper space of the present invention

DESCRIPTION OF SYMBOLS 1 Light transmission plate 2 Distance between light transmission plate and first heat collecting plate 3 First heat collecting plate 4 Space between first heat collecting plate and second heat collecting plate 5 Clearance above second heat collecting plate 6 Second heat collecting plate Plate 7 Blower 8 Lower space behind solar heat collection panel 9 Air supply port 10 Upper space behind solar heat collection panel 11 Air current plate 12 Exhaust port

Claims (1)

A rectangular parallelepiped housing installed at a vertical or near-vertical angle is equipped with a non-permeable light-transmitting plate on the light-receiving surface side, with a large number of small holes, and a back surface at a predetermined interval. A solar heat collecting panel having a double structure consisting of a non-hole heat collecting plate shorter than the heat collecting plate so as to provide a gap in the upper part is arranged at a predetermined interval from the light transmitting plate, and A blower that allows air flow to flow in a flat shape is placed under the solar heat collection panel, and a space divided in two up and down is provided on the back, and an air supply port that leads to the back of the housing is provided in the lower space. A solar heat collecting apparatus, characterized in that an air rectifying plate is disposed in the upper space, and an exhaust port leading to the back of the housing is provided below the air rectifying plate.