JPS591183Y2 - solar water heater - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a solar water heater, and particularly to a solar water heater using a heat pipe.

Conventionally, this type of water heater has generally had a condensing section of a heat pipe placed directly inside a hot water storage tank.

However, in this type of case, it is difficult to create a perfect seal between the heat pipe and the hot water tank, which may result in water leakage, and if the heat pipe ruptures, the working fluid may leak into the tank. , the stored hot water may become unusable.

In order to solve these problems, the condensing part of the heat pipe may be disposed on the outer surface of the tank wall of the hot water storage tank, but in this case, there is a disadvantage that heat conduction from the condensing part to the hot water storage tank is poor.

This idea was made in view of the above points,
There is no need to worry about water leakage due to seal defects or contamination of the hot water storage tank by leaked working fluid, and it also has excellent pressure resistance, so there is no risk of rupture, and it is easy to connect the heat pipe from the condensing part to the hot water storage tank. The purpose is to provide a solar water heater with excellent heat conduction.

In this specification, roll bonding refers to printing an anti-adhesive material in a desired pattern on one of two metal plates such as aluminum, pressing the other plate onto this surface, and then It is manufactured by the so-called roll bonding method, in which fluid pressure is introduced into the non-crimped part to bulge it into a tubular shape.

This invention will be explained in detail below with reference to illustrated embodiments.

In the figure, the main components of the solar water heater according to this invention are a heat collector plate 1 made of roll bond material and a hot water storage tank 2 installed on one end of the heat collector plate 1.

The heat collecting plate 1 includes a heat collecting part 4 having a plurality of parallel straight expansion tube parts 3, and a sliding installation part 6 having a bulge part 5 communicating with the expansion tube part 3 for contacting the bottom of the tank.

The sliding installation portion 6 bulges out so that a large number of small non-bulging recesses 7 are scattered over the entire surface.

Further, the expansion tube section 3 is made into a heat pipe section by enclosing a working fluid.

The working fluid is injected through the inlet 8.

Further, each heat pipe section communicates with each other via a communication section 10 at the end on the evaporation side.

A selective absorption film is formed on the surface of the heat collecting section 4.

The swelling tube part 3 and the swelling part 5 may be a double-sided swelling tube or a single-sided swelling tube.

The planar pattern of the swelling tube section 3 is not limited to the parallel straight tube shape as described above, but may also be a lattice shape or the like.

On the side of the tank installation part of the heat collecting part 4, through holes 9 are provided in the flat non-expansion tube parts 20 between the expansion tube parts 3 for preventing heat radiation at night.
is open.

The shape of the through hole 9 is circular or rectangular, and is not particularly limited.

The hot water storage tank 2 includes a metal or synthetic resin box 11 that opens downward, and a flat metal bottom plate 1 that closes the opening.
2, the main components are a heat insulating material 13 covering the box 11, a case 14 exteriorized to this, and a reinforcing rib 15 installed inside the box 11, and the same type 2 is a side frame 22 of a solar water heater.
It is fixed with screw 16.

Further, a water supply pipe 17, a hot water discharge pipe 18, and an overflow pipe 23 are arranged on the side of the same type 2.

On the other hand, above the heat collecting part 4 is a force glass plate 1 parallel to the heat collecting part 4.
9 is provided, and a heat insulating material 21 is provided below the heat collecting plate 1.

The solar water heater according to this invention consists of a heat collecting plate 1 made of roll bond material and a hot water storage tank 2 installed on one end of the plate. There is no need to worry about sealing the heat pipe, and there is no risk of the working fluid leaking into the tank even if the heat pipe section ruptures.

In addition, since the tank number placement part 6 is bulged so that many small non-bulging parts 7 are scattered over the entire surface, a large contact area with the bottom of the tank is obtained by the bulging parts 5, and the non-bulging recessed parts 7 A large strength can be obtained, so that the heat transfer from the heat collecting plate 1 to the hot water storage tank 2 can be improved, and a large pressure resistance can be applied to the heat pipe section.

Furthermore, since the heat pipe section is composed of the expansion tube section 3 made of roll bond material, the heat collecting plate can be easily manufactured and the manufacturing cost can be reduced.

[Brief explanation of the drawing]

The drawings show an embodiment of this invention; Fig. 1 is a partially cutaway side view of a solar water heater, Fig. 2 is a plan view of a heat collector plate, and Fig. 3 is a cutaway view of the solar water heater. It is an enlarged view of a notch part. ]... Heat collection plate, 2... Hot water storage tank, 3...
... Expansion tube section, 4 ... Heat collection section, 5 ...
・Bulging part, 6... Tank number placement part, 7... Non-bulging concave part.

Claims (1)

[Scope of utility model registration request] The heat collecting plate 1 consists of a heat collecting plate 1 made of roll bond material and a hot water storage tank 2 installed on one end of the plate. 3, the sliding installation part 6 has a bulging part 5 for contacting the bottom of the tank, and the sliding part 6 has many small non-bulging recesses 7 scattered over the entire surface. In the solar water heater, the pipe section 3 is made into a heat pipe section by enclosing a working fluid.