JP2548697Y2 - Improvement of solar collector - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial application field) The present invention relates to a heat exchange device using a flexible sheet material,
In particular, Jitsuhei 6-036450 by the same holder as the present application
The present invention relates to an improved technology of a pumping heat exchanger described in Japanese Patent Application Publication (U.S. Patent No. 2076265).

(Description of the Related Art) A deformable sheet material is used to form a curved heat exchange surface on which a heat medium liquid having a relatively large depression flows down.
The technology to use the depression as a hot water storage tank for heat medium liquid
This is known from the above-cited publication. This type of heat exchanger uses a membrane to form a wide heat collecting surface and forms a hot water storage tank with the remaining part. Is unnecessary, and the structure is greatly simplified as a single facility. The initial cost for installing the equipment is significantly low, and the maintenance can be easily performed. Therefore, there is an advantage that it is possible to provide an economical energy facility which can be amortized in a short period of time and has excellent economic efficiency.

(Problems to be Solved by the Invention) However, according to the above-described device structure, the pumping capacity of the heat medium liquid is limited to within the allowable range of the pressure resistance / tensile strength of the sheet material. Accordingly, there are certain restrictions on the scale of hot water storage. In addition, the heat collection temperature of the heating medium is very slow because the hot water storage capacity is large,
It is generally used as a preheating device for low-temperature heat collection, and it is difficult to give voluntary heat collection performance.

(Means for Solving the Problems) In order to solve the above-mentioned problems, the present invention forms a curved heat exchange surface having a depression using a flexible sheet material on an upper part of a storage tank for a heat medium liquid. The recess is arranged so as to cross the liquid surface of the heat medium liquid in the storage tank, and the recess is connected to the inside of the storage tank through a through hole provided at the bottom of the recess.

(Operation) With the configuration described above, the load of the heat medium liquid is offset by the buoyancy generated in the concave portion of the flexible sheet material. As a result, the load required by the flexible sheet material is hardly generated. .

Since no load is applied to the heat exchange surface, the area of the heat exchange surface can be dramatically increased.

The temperature of the heat transfer liquid flowing down from the peripheral edge of the flexible sheet material toward the intermediate portion changes according to the flow rate, and the heat collection temperature of the heat transfer liquid is controlled and controlled by adjusting the flow rate by the control device. be able to.

The hot water supply load varies greatly depending on, for example, business days and time zones, while the amount of solar radiation is relatively constant. On days when the hot water supply load is smaller, the facility capacity is excessive, so that high-temperature heat collection can be performed.

Effective use of surplus capacity if it is possible to select whether to prioritize heat collection temperature over heat collection efficiency and collect high temperature heat in accordance with the generated hot water supply load, or to collect large amounts of low-temperature preheating liquid with priority to heat collection efficiency And the utility value as equipment is increased. Such selective operation is performed by utilizing the pool of the heat medium liquid and by effectively using the pool and the heat storage tank.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

(Example) The heat exchange surface 1 of the heat exchange device is made of a flexible sheet material. At least a part of the heat exchange surface of the flexible sheet material is attached to a support 2 such as a frame.

1 and 2 show the support 2, the storage tank 4 and the heat exchange surface 1 of the flexible sheet material.

The heat exchange surface is mounted on the support 2 as shown in FIG. The heat exchange surface 1 of the flexible sheet material stretched by the support forms a depression, and a through hole is formed at the bottom of the depression.

The storage tank 4 is arranged adjacent to the heat exchange surface. First
As shown in FIG. 3 and FIG. 3, the upper part of the storage tank 4 is opened, and the heat exchange surface 1 of the flexible sheet material covers the opened tank upper part. The depression 3 forming the bottom of the heat exchange surface 1 is electrically connected to the inside of the storage tank 4 through the through hole.

FIG. 3 shows that the heat exchange surface 1 of the flexible sheet material covers the upper part of the storage tank (the flexible sheet material can be supported at the portion in contact with the storage tank), and the heat exchange surface 1 passes through the through hole.
2 shows a state in which the liquid level at the bottom of the container substantially matches the liquid level in the storage tank.

Communication between the bottom of the heat exchange surface 1 and the storage tank can be made through any of the above-described through holes and any pipe means.
In addition, pumps and valves may be interposed in this pipe means, and the heat medium liquid may be moved from the heat exchange surface side to the storage tank side and from the storage tank side to the heat exchange surface side as necessary. it can. If the liquid level of the heat medium liquid stored at the bottom of the heat exchange surface 1 is set slightly higher than the liquid surface of the heat medium liquid in the storage tank, an appropriate tensile force is applied to the heat exchange surface. This tensile force is used when it is desired to make the heat exchange surface self-supporting in a predetermined shape.

The inside of the storage tank or the bottom of the heat exchange surface and the heat medium liquid supply means 5 are connected via a heat medium liquid circulation pipe and a pump (not shown). Heat medium liquid supply means 5
Can be constituted by, for example, a perforated pipe arranged along the periphery of the heat exchange surface 1 or a spray nozzle arranged at the center of the heat exchange surface.

A heat insulating layer such as a soft urethane foam layer may be laminated on the back side of the sheet material. Further, in order to reinforce the flexible sheet material, a reinforcing layer made of another material, for example, a woven fabric may be attached to the lower side of the flexible sheet material.

FIG. 4 is an explanatory view showing a state where the opening edge 4a of the tank 4 is in contact with the flexible sheet material. If a layer of heat insulating material is arranged on the back side of the flexible sheet material, in the case of a storage tank with an open top, this layer of heat insulating material can serve as a heat insulating layer at the top of the tank, which is preferable. In addition, heat exchange surface 1
Can be covered with a transparent material.

(Effects of the Invention) By configuring as described above, a large-scale heat exchange device that can be installed quickly and easily can be constructed.

Since the load of the pumped heat medium liquid is not applied to the heat exchange surface, an ultra-large heat exchange device having a large-scale heat exchange surface can be constructed.

According to the configuration of the present invention, even if the heat exchange surface has a large area, there is almost no head difference between the depression and the supply means, and the circulation of the heat medium liquid can be performed using a relatively small pump. A simple structure of the pumping heat exchanger can be obtained.
With such a configuration, it is easy to analyze the deformation state of the heat exchange surface in consideration of the elastic modulus, tensile strength, material thickness, etc. of the sheet material. A heat exchange surface that can handle the above can be easily manufactured.

According to the present invention, a very simple and large-capacity large-sized heat exchange device can be constructed extremely inexpensively, and the repair and replacement of the sheet material is also easy. , Can also be moved.

[Brief description of the drawings]

FIG. 1 is a schematic view showing a support and a storage tank of a heat exchange device. FIG. 2 is a perspective view showing a sheet material provided on a support. FIG. 3 is a schematic explanatory view showing an embodiment corresponding to FIG. 1 and FIG. FIG. 4 is an explanatory view showing a contact state between the back surface of the heat exchange surface and the opening edge of the storage tank. 1: heat exchange surface, 2: support, 3: depression, 4: storage tank, 5: means for supplying heat medium liquid.

Claims (3)

(57) [Scope of request for utility model registration] A curved heat exchange surface having a depression is formed by using a flexible sheet material at an upper portion of a storage tank for a heat medium liquid, and the depression is formed so as to cross the liquid surface of the heat medium liquid in the storage tank. And a heat exchange device that connects the recess and the inside of the storage tank through a through hole provided at the bottom of the recess. 2. The heat exchange device according to claim 1, wherein the through hole provided at the bottom of the depression communicates with the inside of the storage tank via a valve or a pump. . 3. The heat exchanger according to claim 2, wherein the liquid level of the heat medium in the recess is slightly higher than the liquid level of the heat medium in the storage tank. Heat exchange device adjusted as.