JP2770016B2 - Heat medium flow down regulation means - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a means for regulating the flow direction of a heat medium liquid for regulating the moving direction of the heat medium liquid. 2. Description of the Related Art A technique for regulating the flow of a heat medium liquid flowing down is disclosed in, for example, Japanese Utility Model Publication No. 58-9666 (Japanese Utility Model Publication No. 62-7971), which is related to the same holder as the inventor of the present application. Has become known. In this prior art, the heat exchange surface itself is plastically deformed to form a number of ridges extending vertically adjacent to each other on the left and right sides, and valleys between the ridges are used as a water conduit. It is about regulating the moving direction of the heating medium. [0003] The reason why the ridge-shaped projection structure is adopted is that there is a demand for improving the external design so that the heat collector is adapted to the building for the sake of architectural design. If the shape of the collector is changed, the edge shape of the heat exchange surface must be changed in the same manner. Originally, in the case of a flow-down type heat collector having a large handmade element, the shape change was not so difficult, but it was difficult to accurately and reliably distribute the heat medium liquid throughout the irregular heat exchange surface. . As a countermeasure, a method has been devised in which a water conduit for forcibly guiding the heat medium liquid is previously formed on the heat exchange surface as described in the above-mentioned publication. Although the plastic processing of the heat exchange surface for the formation of the headrace can be easily performed using a roller, it takes considerable time to correct the twist and warpage generated in the processed material. The final product price has to rise significantly, and it cannot be said that this is a production technology for custom-made products that emphasizes aesthetics rather than the economic benefits of introducing equipment. Japanese Patent Application Laid-Open No. 61-278500 (Japanese Patent Application No. 61-278500)
No.-123866) describes a fluid contact sheet comprising a row of ridges with parallel valleys and peaks.
The construction of this sheet is identical to that of the prior art, the only difference being that the sheet structure is a plastic extrudate. According to the description in the official gazette, the flow of the fluid along the surface of the sheet may decrease the drag resistance, but the flow resistance does not decrease unless the flow of the fluid itself has a certain inertia or directionality from the beginning, Rather, it induces irregular turbulence in the fluid. If the flow rate of the fluid is small enough that the parallel valleys serve as a water channel, the same regulation effect by the forced water conduction phenomenon as in the above cited technology occurs. With respect to this kind of prismatic plastic sheet extrusion, the sheet is a plastic sheet straight fresnel lens itself that is widely used in the field of solar heat collection. is there. The problems inherent in lens sheet manufacturing have been carried over. What is particularly problematic is that, under the current conditions, only belt-shaped products having a small width (several ten centimeters) and a thickness can be manufactured due to the difficulty in uniform extrusion. The product usage unit price per unit area is higher than that of the above cited example, and cannot be a substitute technology. An important problem that the inventor of the present application has pursued to date is to develop an inexpensive device having a simple structure that can be amortized in a short period of time, and the prior art described later exactly meets such a demand. Technology. JP-A-58-20506 (Japanese Patent Publication No. 5-041902) and JP-A-58-01296 relating to the same holder as the inventor of the present application.
No. 0 (Japanese Patent Publication No. 5-041901) uses a rectifying means provided with a large number of contacts that are pressed against the heat exchange surface, and finely divides the heat medium liquid flowing down along the heat exchange surface into leaf veins. It relates to the technology of spreading over the entire heat exchange surface. The rectifying means to be used is located at an intermediate position of the flow path of the heat medium liquid and is arranged in a direction crossing the flow path of the heat medium liquid. Accordingly, the required number of rectifying means / the location / position of the pressure contactor is determined by the following equation: flow distance / wetability of flow surface / water repellency /
The selection is made in consideration of various factors such as the flatness of the surface. When the rectifying means is installed, a mounting frame for fixing the rectifying means, a support base or a mounting bracket for erecting the mounting frame, and a clamp device are used. The material cost / construction cost required for these components is significantly lower than using a conventional heat collector of the same scale, and as described above for this type of equipment which is particularly important in terms of investment effect and economic efficiency. Technology plays a major role, and is expected to be widely used in the future as a simple heat collection method. [0009] The above-described rectification technique involves various problems when used in equipment having a large-scale falling surface area or equipment having a long and long flowing path. That is, the rectification method has a scale limitation. In addition, it is difficult to use even a small-scaled one on a curved or curved downstream surface, and it is difficult to manage the downstream surface that may be deformed because the downstream surface has a large influence on the downstream surface. There is a point. There is a need for a reliable and inexpensive flow regulating means for a heat transfer fluid that can maintain a stable regulating action for a long period of time, regardless of the availability of the equipment. [0010] In order to solve the above-mentioned problems, a means for regulating the flow of a heat medium liquid according to the present invention comprises a plurality of materials arranged side by side and arranged in parallel to form a dense band. Zones are formed in parallel on the substrate surface. The space between each strip is interposed between these strips as an exposed blank area on the substrate surface. Since the strip-shaped area where the material is densely packed and the blank area where the surface of the substrate is exposed are arranged side by side and in parallel, the velocity difference boundary area is applied to the heat transfer medium flowing down along the substrate. Alternatively, a drag difference boundary region appears, and these horizontally aligned boundary regions respectively constrain the moving direction of the heat medium liquid, and the flowing direction of the heat medium liquid is constant. As a result, the heating medium liquid does not move irregularly, and flows while maintaining a relatively stable state. FIG. 1 is a schematic plan view showing one embodiment of a means for regulating the flow down of a heat medium liquid according to the present invention. The illustrated flow-down regulating means is configured by placing a large number of materials 1 on the surface of a substrate 3. The material 1 has, for example, a width of about 1 mm,
It is repeatedly arranged in a dense and dense state. More specifically, a group of a plurality of materials arranged side-by-side and parallel in a horizontal direction is a group (strip-like area), and the groups are arranged in parallel at intervals. The space between each group is directly used as an exposed blank area 2 on the substrate surface. A small number of rows of material can be arranged in this blank area. The supply means of the heating medium liquid is provided at a position above the base material. FIG. 2 shows an example in which the above-mentioned flow regulating means is applied to an open-type falling heat collector. The raw material 1 is vertically bonded from a position above the front surface of the base material 3 which is a heat receiving plate to a downstream side. The heat receiving plate includes not only those made of metal such as stainless steel and aluminum but also those belonging to synthetic resin such as fiber reinforced polyester plate, polycarbonate plate and methacrylic resin, or glass plate or ceramic material. Alternatively, a silicon-based or fluorine-based film material can be used. As the material 1, an elastomer or plastomer synthetic material having excellent weather resistance can be used. Such a material is adhered to the surface of the heat receiving plate by painting, silk screen printing, pasting or hot rolling. The thickness of the material can be selected from a few tens of microns to a few millimeters and can be easily formed and bonded using conventional and well-known materials. When the base material has hydrophobicity, a material having hydrophilicity can be selected as the material. FIG. 3 shows an example in which the above-described flow regulating means is applied to a sealed-type falling heat collector. The material 1 is adhered to the back surface of the base material 3 which is a heat receiving plate. The heating medium liquid is supplied to a position above the back surface of the heat receiving plate, and flows down along the surface.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic plan view showing a configuration example of a heat medium flow regulating means according to the present invention. FIG. 2 is a longitudinal sectional view showing an example of an open-type flow-down type heat collector using the flow-down regulating means of FIG. FIG. 3 is a longitudinal sectional view showing an example of a sealed-type falling-type heat collector using the falling-down regulating means of FIG. 1; [Explanation of Signs] 1 Material 2 Blank area 3 Base material

Claims (1)

(57) [Claims] Along with forming a dense band-shaped area of a material in which a plurality of materials are adjacently arranged side by side and arranged in parallel on a substrate surface,
The space between each of the strips is a means for regulating the flow of the heat transfer fluid interposed between the strips as an exposed blank area on the substrate surface. 2. 2. The means for regulating the flow of a heat medium liquid according to claim 1, wherein said blank area is partitioned by a small number of materials.