JPH04316960A - Flow-down-over-back type heat collector - Google Patents

Abstract

PURPOSE:To improve reliability of a heat collector and to facilitate maintenance and management by a method wherein a piping route/heating medium liquid feeding means is erected on the upper side of a heat collecting sheet the surface of which forms a heat collecting surface for a solar heat and over the back of which heating medium liquid flows down, and a receiving surface and a curved surface are formed on the heat collecting sheet. CONSTITUTION:A shield body 1a is located in juxtaposition to a heat collecting sheet 1, the surface of which forms a heat collecting surface for a solar heat and over the back of which heating medium liquid flows down, with a distance therebetween, and a closed space is formed therebetween. A piping route/heating medium liquid feeding means 2 is erected on the upper surface of the heat collecting sheet 1 and serves as a suspension means round which a part of the heat collecting sheet 1 is wound. The heat collecting sheet 1 has a curved surface 4 curved along a guide member 5a of a fixing means 5, and the wound part of the heat collecting sheet is pressed by means of a holding member 5b. After heating medium liquid is caused to flow down from a liquid absorbing layer 2a, formed on the outer surface of the means 2, along a heating medium receiving surface 3, it flows through the curved surface 4 down to the back of the heat collecting sheet 1.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION The present invention relates to a downstream type heat collector, and particularly to a backside type heat collector.

0002

[Prior Art] The present invention relates to a back side flow type heat collector in which a heat medium liquid is applied to the back surface of a heat collector and flows down from a heat medium liquid supply means with a rectifying means provided on the back surface of a heat collecting sheet. Various things have been proposed by the inventor of the application so far.

0003

[Problems to be Solved by the Invention] As the scale of the heat collector increases, the equipment route becomes more complicated, and it becomes difficult to stably supply the heat medium liquid from the heat medium liquid supply means to the heat collection sheet, and maintenance management becomes difficult. This creates a time-consuming problem on the surface. How can we improve the heat transfer liquid supply structure while making maximum use of the features of the backside flow type heat collector or sealed flow type heat collector that the applicant has proposed in the past, and achieve more reliable maintenance management? The current challenge is how to create a heat collector that is easy to use.

0004

[Means for Solving the Problems] According to the present invention, there is provided a heat collecting sheet whose front side forms a solar heat collecting surface and whose back side forms a heat transfer liquid flowing down, a hanging means for supporting this heat collecting sheet, and a lower side. a fixing means for fixing the parts; a piping route/heat medium liquid supply means installed above the heat collection sheet; and a part of the heat collection sheet curved along the lower surface of the piping route/heat supply liquid supply means. A heat medium liquid receiving surface formed by deforming and further attaching a heat collecting sheet along the upper surface from the side surface of the piping route/heat medium liquid supply means, and a lower part of the heat collecting sheet that receives the heat medium liquid flowing down the heat collecting sheet. The heating medium liquid is directly discharged from the piping route/heating medium liquid supplying means and the heating medium liquid falls along the piping route/heating medium liquid supplying means itself. A back side flow-down type heat collector is obtained in which heat is collected by receiving the heat medium on the heat medium liquid receiving surface and allowing the heat to flow down from the heat medium liquid receiving surface through the curved and deformed surface to the back surface of the heat collecting sheet.

[0005]

[Operation] By configuring as described above, the heat transfer liquid sprayed onto the heat collection sheet from the piping route/heat transfer liquid supply means changes direction along the curved surface while remaining attached to the surface of the heat collection sheet. The heat medium liquid that continuously flows down the back surface of the heat collection sheet and at the same time flows down the piping route/heat medium liquid supply means itself without adhering to the heat collection sheet is received by the heat medium liquid receiving surface and is also curved in the same way. It is supplied to the back surface of the heat collecting sheet, flows down the heat collecting sheet, and is collected in the gutter passage or storage water tank.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the back side flow type heat collector of the present invention will be described in detail below with reference to the accompanying drawings.

FIG. 1 shows a part of the upper part of a heat collecting sheet 1 constituting a heat collecting surface of a back side flow type heat collector. In the illustrated example, the shielding body 1a is spaced apart from the heat collecting sheet 1.
is installed. An extended portion of a heat collecting sheet can be used as the shielding body 1a. Alternatively, it is also possible to use a wall of a structure or the like as a shield. This shield can function as a heat collecting surface or a heat insulating wall. A substantial closed space can be formed by the shielding body 1a, the heat collecting sheet 1, and the waterproof sheet described below.

The front surface of the heat collecting sheet 1 forms a heat collecting surface for solar heat, while the back surface forms a heat exchange surface on which a heat transfer liquid flows. The piping route/
A heat medium liquid supply means 2 is installed. In the illustrated example, the piping route/heat medium liquid supply means 2 is located near the top of the heat collecting sheet 1 and serves as means for suspending the heat collecting sheet. A portion of the heat collecting sheet is wound around the piping route/heat medium liquid supply means 2 along the surface thereof either directly or at intervals through an arbitrary spacer member. Further, a portion of the heat collecting sheet along the piping route/lower surface of the heat medium liquid supply means 2 is deformed, for example, curved.

In the example shown in FIG. 1, the heat collecting sheet 1 forms a curved surface 4 along the guide member 5a of the fixing means 5, is wrapped around the pipe of the piping route/heat medium liquid supply means 2, and is wrapped around the pipe of the piping route/heat medium liquid supply means 2, and is attached to the holding member 5b. is holding down this wrapped part. The continuous portion of the heat collecting sheet can be fixed to a collecting tank 6 or a gutter passage, which will be described later, at an appropriate time by using an appropriate structure, for example, after checking the state of adhesion of the heat medium liquid.

The heat medium liquid receiving surface 3 has a function of regulating or diffusing the heat medium liquid. Diffusion here refers to spreading over the surface, and as a special example, there is a method of spreading the heat transfer liquid over the entire slope using a pre-formed liquid-absorbing coating layer, or a pre-formed regulation line. This means that the heat transfer liquid is forcibly spread along the regulation line using When using a regulation line, for example, the regulation line structure described in JP-A-63-297966 filed by the same person as the applicant of the present invention or the regulation-line structure described in JP-A-2-291024 is used. You can also do that.

For the piping route/heat medium liquid supply means 2, a porous pipe as shown in the drawing can be used, for example, or a siphon structure as described in Utility Model Application No. 2-291024 filed by the same applicant as the applicant of the present invention. Alternatively, a method may be adopted in which the heat transfer liquid is sprayed using spray nozzles installed at intervals in the piping. When using a spray nozzle, the opening 4a (Fig. 1) should be narrowed (the protruding distance of the curved surface should be large), and the piping route/heat medium liquid supply means should be installed outside the heat collector to create a spray cavity. can also be formed.

In the illustrated example, a liquid absorbing layer 2 a is provided on the outer surface of the piping route/heat medium liquid supply means 2 . The heat medium liquid discharged from the piping route/heat medium liquid supply means to the heat medium liquid receiving surface 3 via the liquid absorption layer 2a flows down along the heat medium liquid receiving surface 3, and curves away from the heat medium liquid receiving surface 3. On side 4,
Further, it flows down from the curved surface 4 to the back surface of the heat collecting sheet. The back surface of the heat collecting sheet can have the same diffusion function as the heat medium liquid receiving surface described above. That is, the liquid absorbent coating layer and the regulation line can be provided in advance.

The heat transfer liquid that has flowed down along the back surface of the heat collecting sheet is either stored in the pumping tank 6 at the bottom of the heat collector, or is stored in the gutter passage (
(not shown) and then sent to the required location.

The water tank 6 shown in FIG. 2 is equipped with a foam insulation block 7 for storing hot water. In the illustrated example, the foam insulation block 7 supports a waterproof layer of a flexible sheet material made of the same material as the heat collector, which is continuous with the heat collector of the heat collector, on the upper part, while supporting side walls on the sides. It is backed up by 8.

[0005] The supporting side walls have sufficient rigidity and can be spaced apart or narrowed from one another along the installation surface. In the illustrated example, the support side wall 8 is provided with a groove 9 formed continuously or intermittently in its lower part, in which a wedge-shaped leg 10 is formed.
By inserting the support side wall 8, the support side wall 8 can be fixed.

The legs 10 do not necessarily need to be constructed separately from the supporting side walls.

By configuring as described above, the spacing between the supporting side walls can be freely widened or narrowed, thereby making it possible to insert a heat insulator block having a desired volume between the supporting side walls. If it is made of styrofoam, even hundreds of pieces can be manufactured relatively easily and inexpensively. In addition, since the support side wall and the leg can be freely displaced relative to each other, this location functions as a hinge, so that the installation of the aquarium is not significantly affected by the unevenness of the support surface.

The insulation blocks are inserted between the side walls in adjacent or spaced blocks of appropriate width. Since it is supported by the side wall, the insulation block itself only needs to receive the water load as surface pressure through the waterproof layer, so even soft materials such as styrofoam can be used.

[0019]

[Effects of the Invention] With the above-described configuration, even on the heat collecting surface of a large-scale heat collector, installation of piping routes/heat medium liquid supply means, laying of heat collecting sheets, and heating medium can be performed with simple operations. Forming the liquid receiving surface and constructing the pumping tank can be done relatively easily.

The relative positional relationship between the heating medium liquid piping route/heating medium liquid supplying means and the heating medium liquid receiving surface of the heat collecting sheet can be adjusted while visually controlling the falling shape of the heating medium liquid.

A continuous flowing down surface is formed from the heat medium liquid receiving surface to the curved surface and from the curved surface to the back surface of the heat collecting sheet, and the heat medium liquid once attached to the heat medium liquid receiving surface of the heat collecting sheet is transferred to the heat collecting sheet. It is possible to flow down reliably and smoothly while remaining attached to the surface.

[0022] A pumping tank with an arbitrary volume can be easily constructed, and even if the heat collecting surface is large-scale, its weight is generally light, and it is an inexpensive tank with a simple structure and a large heat storage capacity. A heat collector is obtained.

[0023] If the above-mentioned hanging method is adopted, the heat collector does not take up much space and can be installed wherever it is needed.

[Brief explanation of drawings]

FIG. 1 is an explanatory cross-sectional view showing an example of the upper structure of a backside flow type heat collector according to the present invention.

FIG. 2 is an explanatory cross-sectional view showing an example of the lower structure of the back side flow type heat collector according to the present invention.

[Explanation of sign]

Claims (7)

[Claims] Claim 1: A heat collecting sheet whose front side forms a solar heat collecting surface and whose back side forms a heat transfer liquid, a hanging means for supporting the heat collecting sheet, a fixing means for fixing the lower part, and a heat collecting sheet. The piping route/heating medium liquid supplying means installed above the sheet and a part of the heat collecting sheet are curved and deformed along the lower surface of the piping route/heating medium liquid supplying means, and further the piping route/heating medium liquid supplying means is A heat medium liquid receiving surface formed by attaching a heat collecting sheet along the upper surface from the side surface of the supply means, and a gutter passage or a pumping tank provided at the bottom of the heat collecting sheet to receive the heat medium liquid flowing down the heat collecting sheet. The heating medium liquid receiving surface receives the heating medium liquid directly discharged from the piping route/heating medium liquid supplying means and the heating medium liquid falling along the piping route/heating medium liquid supplying means itself, and A backside flow type heat collector that collects heat by flowing it from the medium liquid receiving surface through the curved surface to the back surface of the heat collecting sheet. 2. The back side flow type heat collector according to claim 1, wherein the hanging means also serves as a piping route/heat medium liquid supply means. 3. The back side flow type heat collector according to claim 1 or 2, wherein the gutter passage or the scooping tank passage fixes and holds a lower portion of the heat collection sheet. 4. The backside flow type heat collector according to claim 1, wherein the pumping tank includes an inner foam insulation block for storing hot water, and a rigid support side wall that backs up the foam insulation block. and a waterproof sheet covering the surface of the foam insulation block. 5. In the backside flow type heat collector according to claim 4, the waterproof sheet and the shielding body are integrated into the heat collecting sheet, and the waterproof sheet, the shielding body, and the heat collecting sheet provide a substantial A backside flow-through type heat collector with a closed space. 6. The back side flow-down type heat collector according to claim 5, wherein the heat collection sheet is held by the weight of a heat transfer liquid such as water stored in a pumping tank. vessel. 7. The back side flow-down type heat collector according to any one of claims 1 to 6, wherein the heat collection sheet is covered with a greenhouse effect cover at intervals. vessel.