JP2550603Y2 - Hot water generator using solar heat - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hot water generating apparatus utilizing solar heat for generating hot water using solar heat.

[0002]

2. Description of the Related Art Today, various types of hot water generators utilizing solar heat are widely used for hot water supply, heating and the like, in which energy saving is being called for.

[0003] As a hot water generator utilizing solar heat, a vacuum double heat collecting tube is often employed because of its high heat collecting effect. Water is supplied into the vacuum double heat collecting tube to form a vacuum double heat collecting tube. The hot water generated by heating inside the pipe is guided to the outside of the pipe and used. A water supply pipe that supplies water and a hot water conduit that guides hot water out of the pipe are inserted into this vacuum double heat collection pipe,
The opening of the vacuum double heat collection tube is sealed with an airtight stopper.

[0004]

In the above-mentioned conventional hot water generator utilizing solar heat, the hermetic plug that seals the opening of the vacuum double heat collecting tube covers only the outer surface of the opening of the vacuum double heat collecting tube. Due to the configuration, there is a problem that airtightness is difficult, and the airtightness is easily removed.

[0005] In view of the above, the present invention aims at perfecting the sealing of the opening of the vacuum double heat collecting tube with an airtight stopper,
An object of the present invention is to provide a hot water generating apparatus using solar heat, which aims to allow an airtight plug to be securely attached to an opening of a vacuum double heat collecting tube.

[0006]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a vacuum double heat collecting pipe, a water supply pipe for supplying water into the vacuum double heat collecting pipe, and the vacuum double heat collecting pipe. In a hot water generating apparatus utilizing solar heat, in which a hot water conduit for guiding hot water generated by heating in the pipe to the outside of the pipe is inserted, and an opening of the vacuum double heat collecting pipe is sealed with an airtight plug, the vacuum double heat collecting pipe The airtight plug that closes the opening has a structure that wraps the open end of the vacuum double heat collection tube from both inside and outside, and the watertight tube includes a water supply pipe and a hot water conduit of a plug portion inserted into the vacuum double heat collection tube. A structure in which a solid in-mold core having high rigidity is provided in a portion except for a portion penetrating through is adopted.

[0007] A lip is provided at the junction of the plug portion of the airtight plug with the plug portion, the pipe wall in the vacuum double heat collection tube, the water supply pipe, and the hot water conduit.

[0008] A compression piece is provided in the vacuum layer at the open end of the vacuum dual heat collecting tube.

[0009]

[Function] The airtight plug that closes the opening of the vacuum double heat collection tube is structured so as to wrap the open end of the vacuum double heat collection tube from both inside and outside, so the contact area between the airtight plug and the open end of the vacuum double heat collection tube In addition, since the hermetic plug is provided with a rigid high solid in-mold core in a portion of the plug portion inserted into the vacuum double heat collecting tube except for a portion penetrating the water supply pipe and the hot water conduit. When the hermetic plug is fitted into the opening of the vacuum double heat collecting tube, the in-mold core prevents compression bending of the hermetic plug, and the hermetic plug is more securely held by the inner surface of the open end of the vacuum double heat collecting tube. Due to the close contact, more complete airtightness of the vacuum double heat collecting tube by the hermetic plug and stronger attachment holding force of the hermetic plug can be obtained.

A lip is provided at the junction of the plug portion of the hermetic plug with the plug portion of the plug portion and the pipe wall, the water supply pipe, and the hot water conduit in the vacuum dual heat collecting tube, so that the hermetic plug and the vacuum double tube are provided. The contact area with the open end of the heat collecting tube becomes larger, so that the airtight plug can provide more airtightness of the vacuum double heat collecting tube.

Further, by providing a compression piece in the vacuum layer at the end of the vacuum double heat collecting tube on the opening side, the vacuum double collecting tube can be secured even when the airtight plug fitted into the vacuum double heat collecting tube is tightened with a tightening band. Since the heat tube is prevented from being damaged, it is possible to tighten more strongly, and the airtightness of the vacuum double heat collecting tube can be improved, and the airtight plug can be prevented from falling off.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail based on an embodiment shown in the drawings.

In the drawing, reference numeral 1 denotes a vacuum double heat collecting tube, which comprises a transparent glass outer tube 2 having a predetermined length and a selective heat absorbing film 3 having a high heat collecting property. An inner tube 4 made of glass provided on the surface
It is supported in an appropriately inclined state with the side as the upper part and the closed end 6 as the lower part.

Reference numeral 7 denotes a water supply pipe for supplying water to the inside of the vacuum double heat collecting tube 1, which is inserted into the tube 1 through the opening 5 of the vacuum double heat collecting tube 1, and the water discharge port 8 has a sharp nozzle shape. The outlet end of the water outlet 8 is disposed at a position close to the closed end 6 of the vacuum dual heat collecting tube 1.

Reference numeral 9 denotes a hot water conduit which guides the hot water generated by heating in the vacuum double heat collecting tube 1 to the outside of the tube 1. The hot water conduit 9 is inserted into the tube 1 through the opening 5 of the vacuum double heat collecting tube 1 and absorbs the water. Mouth 10
Has a flare shape, and the open end of the water inlet 10 is arranged at a position near the opening 5 of the vacuum dual heat collecting tube 1.

Reference numeral 11 denotes a hermetic plug for closing the opening 5 of the vacuum dual heat collecting tube 1, which is made of heat-resistant synthetic rubber. In this airtight plug 11, a circumferential groove 12 for press-fitting the opening 5 of the vacuum double heat collecting tube 1 is formed on the inner surface thereof.
By press-fitting the opening 5 into the circumferential groove 12,
The airtight plug 11 wraps the inside and outside surfaces of the open end. Further, a water supply pipe 7 inserted into the vacuum double heat collecting pipe 1 and a through hole 13 through which the hot water pipe 9 penetrates,
14 are formed. Further, a water supply pipe 7 and a hot water pipe 9 are provided in a plug portion of the airtight plug 11 inserted into the vacuum double heat collecting pipe 1.
A solid in-mold core 15 having high rigidity, such as metal, is cast in a portion excluding the portions of the through holes 13 and 14 penetrating through. Reference numeral 16 denotes a lip provided on a plug portion of the hermetic plug 11 at a junction with the outer wall of the pipe wall, the water supply pipe 7 and the hot water conduit 9 in the vacuum double heat collecting tube 1.

Reference numeral 17 denotes a compression piece made of a hard resin inserted into the vacuum layer at the opening side end of the vacuum double heat collecting tube 1, and 18 denotes an airtight stopper 11 fitted into the opening 5 of the vacuum double heat collecting tube 1. It is a tightening band for tightening the outer circumference.

According to the above configuration, the opening 5 of the vacuum double heat collecting tube 1 is press-fitted into the circumferential groove 12 formed on the inner surface of the hermetic plug 11, whereby the opening 5 of the vacuum double heat collecting tube 1 is formed. Is open from both inside and outside by an airtight plug 11, so that the contact area between them is large, whereby the airtightness of the vacuum double heat collecting tube 1 is improved. Is difficult to remove.

The airtight stopper 11 has a vacuum double heat collecting tube 1.
A rigid solid in-mold core 15 such as metal is cast into a portion of the plug portion except for the through holes 13 and 14 penetrating the water supply pipe 7 and the hot water conduit 9. When the hermetic plug 11 is fitted into the opening 5 of the vacuum dual heat collecting tube 1, the in-mold core 15
1 is prevented, and the hermetic plug 11 is more securely adhered to the inner surface of the open end of the vacuum dual heat collecting tube 1. Thereby, more complete airtightness of the vacuum double heat collecting tube 1 by the airtight plug 11 can be achieved, and the airtight plug 11 can be separated from the vacuum double heat collecting tube 1.
Is more difficult to come off.

The lip 16 is provided at the junction of the plug portion of the airtight plug 11 with the outer wall of the pipe wall in the vacuum double heat collecting tube 1, the water supply pipe 7, and the hot water conduit 9, so that the airtight plug is provided. 11
The contact area between the vacuum double heat collecting tube 1, the water supply pipe 7, and the hot water conduit 9 is further increased, so that the airtight stopper 11 can achieve more complete airtightness of the vacuum double heat collecting tube 1.

Since the compression piece 17 made of hard resin is inserted into the vacuum layer at the opening end of the vacuum double heat collecting tube 1, the airtight plug 11 fitted into the opening 5 of the vacuum double heat collecting tube 1 is inserted. Even when the outer periphery of the vacuum double heat collecting tube 1 is strongly tightened with the tightening band 18, there is no fear that the opening 5 of the vacuum double heat collecting tube 1 is damaged.
Therefore, it is possible to strongly tighten with the tightening band 18, and the airtightness of the vacuum double heat collecting tube 1 can be achieved, and the airtight plug 11 can be prevented from falling off.

In the figure, 19 is a water supply header, 20 is a hot water header, 21 is a water supply pipe, 22 is a hot water pipe, 23 is a hot water storage tank, and 24 is a makeup water pipe, and water is supplied through the water supply pipe 21 and the water supply header 19. Water supplied from the pipe 7 into the vacuum double heat collecting pipe 1 is heated in the vacuum double heat collecting pipe 1 to become hot water, and this hot water passes through the hot water pipe 9, the hot water header 20, the hot water pipe 22 and the hot water storage tank 23. The hot water entering the hot water storage tank 23 is sent again to the vacuum double heat collecting pipe 1 by the pump 25 provided on the water supply pipe 21, and the water is supplied to the vacuum double heat collecting pipe 1 and the hot water storage tank 23. While being circulated, it is generated in high-temperature hot water. The generated hot water can be taken out of the hot water storage tank 23 by the take-out pipe 26. When replenishing water, water is supplied from a replenishing water pipe 24 having one end connected to a water pipe (not shown) or the like.

[0023]

As described above, according to the present invention, the sealing performance of the airtight plug that closes the opening of the vacuum dual heat collection tube is extremely high, and there is no risk of water leaking from the same. Since the airtight plug fitted into the opening of the heat pipe is firmly fixed to the same and does not easily come off, a robust and durable hot water generator utilizing solar heat can be obtained.

[Brief description of the drawings]

FIG. 1 is a partially omitted longitudinal sectional view showing an embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Vacuum double heat collecting pipe 7 Water supply pipe 9 Hot water pipe 11 Hermetic plug 13, 14 Through hole 15 In-mold core 16 Lip 17 Compression piece

Claims (3)

(57) [Scope of request for utility model registration] 1. A water supply pipe for supplying water into the vacuum double heat collecting pipe and a hot water conduit for guiding hot water generated by heating in the vacuum double heat collecting pipe to the outside of the vacuum double heat collecting pipe. In the hot water generating apparatus utilizing solar heat, wherein the opening of the vacuum double heat collecting tube is inserted and hermetically sealed with an airtight plug, the airtight plug closing the opening of the vacuum double heat collecting tube is closed with the opening end of the vacuum double heat collecting tube. In addition to having a structure that wraps from both inside and outside, the airtight stopper has a rigid high solid in-mold at the part of the plug part inserted into the vacuum double heat collecting tube except for the part penetrating the water supply pipe and hot water conduit. A hot water generator utilizing solar heat, comprising a core. 2. A lip is provided at a junction of the plug portion of the hermetic plug with the plug portion, a pipe wall in a vacuum double heat collecting tube, a water supply pipe, and a hot water conduit. The hot water generator using solar heat as described in the above. 3. The hot water generating apparatus using solar heat according to claim 2, wherein a compression piece is provided in a vacuum layer at an end of the vacuum double heat collecting tube on the opening side.