JPH0133990Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field This invention relates to a component of a solar heat collector used in a solar water heater.

Conventional technology and its problems Conventionally, solar heat collector components have been
Some of them are known, such as those described in Japanese Patent No. 55-100891. The device in the same publication that is similar in form to this idea is shown in FIG. The solar heat collector component shown in the figure consists of a band-shaped metal plate in which a metal tube fitting groove is formed in the longitudinal direction of the width center of the band-shaped metal plate, and a metal tube fitted into the fitting groove of the metal plate. However, since the metal plate and the metal tube are not integrated, the heat conductivity from the metal plate to the metal tube is poor, and the heat collection efficiency is poor. Therefore, as shown in Fig. 6, a component of a solar heat collector, in which a metal tube is welded in the width direction of a flat band-shaped metal plate in the widthwise center length direction, is also used as an integrated metal plate and metal tube. better known. Incidentally, it is preferable to use aluminum, which has good heat absorption performance, for the metal plate that absorbs solar heat, and to use copper, which has excellent corrosion resistance against hot water, for the metal tube through which hot water flows. However, because there is a difference in the coefficient of thermal expansion between aluminum and copper, when collecting heat, especially during so-called dry firing when no water is present in the copper tube, the aluminum plate expands more in the length direction than the copper tube. Since the heat collector components are integrated, they curve in an arcuate shape when viewed from the side. If the deformation exceeds a certain limit, it cannot return to its original state. Furthermore, if water is suddenly passed through the copper pipes while the temperature of the heat collector component is rising under the above-mentioned dry condition, the entire component will be cooled and thermally contracted. ,
Since the center of the width of the aluminum plate where the copper tube is present has a larger amount of shrinkage than both sides of the aluminum plate, the difference in the amount of shrinkage appears in the form of waves on both sides. This waving will not return to its original state once the deformation exceeds a certain limit. The occurrence of bow-shaped warps and undulations not only impairs the appearance of the solar heat collector, but also causes the following problems. That is, a solar heat collector is constructed by connecting a required number of each component, but if the above-mentioned deformation exists, a gap will be created between the connecting portions of adjacent components. Then, gas generated from the binder contained in the heat insulating material placed on the lower surface of the solar heat collector passes through the gap and clouds the transparent plate at the top of the water heater, impeding heat collection performance. Conversely, condensed water generated on the lower surface of the transparent plate penetrates into the heat insulating material through the gap, impairing its heat insulating performance.

The purpose of this invention is to provide a solar heat collector component that is free from thermal deformation even though the aluminum plate and copper tube are integrated and can be easily connected to each other.

Means for Solving the Problems In order to achieve the above problems, the solar heat collector component according to this invention consists of a strip-shaped aluminum plate and a copper tube welded in the widthwise and longitudinal direction of the lower surface of the aluminum plate. , the aluminum plate has a foreskin that tightly encloses the upper half of the copper tube's outer circumferential surface, and heat is applied upward or downward parallel to the copper tube on both sides of the aluminum plate. A recessed portion for preventing deformation and for polymerization connection is formed.

Embodiment An embodiment of this invention will be described below with reference to the drawings.

The components of the solar heat collector shown in FIG.
It consists of a copper tube 2 that is high-frequency welded in the widthwise and lengthwise direction of the lower surface of the tube. Copper tube 2 is attached to aluminum plate 1.
A foreskin part 3 is formed which tightly encloses an area exceeding the upper half of the outer circumferential surface of the foreskin. Further, on both sides of the aluminum plate 1, V-shaped recesses 4 and 5 for preventing thermal deformation and for superposition connection are formed parallel to the copper tubes and facing upward.

A solar heat collector is constructed by sequentially connecting the required number of components in the width direction, and the connection is made by connecting the concave portions 4 of one of the adjacent components (indicated by a solid line) in the same way. This is done by overlapping the other recess 5 (indicated by a chain line).

The solar heat collector component shown in FIG. 2 is the same as the embodiment of FIG. 1, except that the V-shaped recesses 6, 7 are both directed downward.

The solar heat collector component shown in FIG. 3 has downward V-shaped recesses 10 and 11 for preventing thermal deformation parallel to both downward V-shaped recesses 8 and 9 and the copper tube 2, respectively. It is the same as the embodiment of FIG. 2 except that it is formed redundantly.

The solar heat collector component shown in FIG. 4 is the same as the embodiment shown in FIG. 1, except that the V-shaped recess 12 on one side faces downward and the V-shaped recess 13 on the other side faces upward. are the same.

The embodiment shown in FIG. 4 is used by horizontally rotating the structural members connected on both sides by 180 degrees from the state shown.

Effects of the invention The solar heat collector component according to this invention consists of a band-shaped aluminum plate and a copper tube welded in the longitudinal direction of the width center of the lower surface of the aluminum plate. When a solar heat collector is constructed using this component, the solar heat absorbed by the aluminum plate, which has good heat absorption performance, is absorbed by the aluminum plate, which has excellent corrosion resistance against the hot water that exists on the underside. transmitted through copper pipes,
It efficiently heats the water flowing inside it.

In addition, the aluminum plate has a foreskin that tightly wraps the upper half of the outer circumferential surface of the copper tube, and on both sides of the aluminum plate,
Since the upward or downward thermal deformation prevention and overlapping connection concave portion is formed parallel to the copper tube, the heat collector component is prevented from warping into an arched shape. Furthermore, recesses are formed on both sides of the aluminum plate in parallel with the copper tube to prevent thermal deformation.
Coupled with the presence of the foreskin, the strength of the heat collector component is significantly increased compared to a flat aluminum plate, which further prevents the heat collector component from warping into an arched shape, and also prevents the heat collector component from bowing. The presence of the deformation-preventing recesses also prevents undulations from occurring on both sides of the aluminum plate.

Since the above-mentioned recesses also serve as overlapping connections of the heat collector constituent members, the position of each constituent member can be determined and shifted by simply overlapping the required number of heat collector constituent members with the recesses on the sides one after another. It is possible to easily configure a solar heat collector by connecting the solar heat collector in a state where there is no solar heat collector. Moreover, since there is no undulation due to thermal deformation on both sides of the aluminum plate, the concave portions of adjacent heat collector components are maintained in a close overlapping state, and no gap is created at the connecting portion, so the above-mentioned problem based on the generation of gaps is maintained. Problems like this do not occur.

[Brief explanation of the drawing]

1 to 4 are front views showing various embodiments of this invention. DESCRIPTION OF SYMBOLS 1... Aluminum plate, 2... Copper tube, 3... Foreskin part, 4, 9... Recessed part for preventing thermal deformation and for polymerization connection.

Claims (1)

[Scope of utility model registration request] It consists of a band-shaped aluminum plate and a copper tube welded in the width center length direction of the lower surface of the aluminum plate. A component of a solar heat collector, in which concave portions for preventing thermal deformation and for superposition connection are formed on both sides of an aluminum plate and are directed upwardly or downwardly in parallel with the copper tubes.