KR101776565B1 - Double vacuum tube type solar heat collecting apparatus - Google Patents

Abstract

The present invention relates to a dual vacuum tube type solar collecting apparatus, in which a double tube type vacuum collecting tube is used to circulate heated water in a natural manner, thereby increasing the heat storage rate and the heat collecting effect.
The double tube type solar collecting apparatus according to the present invention includes: a replenishing tank (130) for receiving and storing water in an internal space; A heat storage tank 120 for receiving heating water from the supplementary tank 130 and storing the heated water at a predetermined height; A plurality of vacuum collection tubes 180 formed in a double vacuum tube so as to be heated by the solar heat while circulating the heating water stored in the heat storage tank 120 into the inside of the hole of the heat storage tank 120; A heating pipe (150) for discharging heated water in the heat storage tank (120); And a heat exchange pipe (170) arranged to be submerged in the heating water inside the heat storage tank (120) and heating the hot water supplied from the supplement tank (130) by heat conduction of water for heating and discharging the hot water to hot water have.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a vacuum tube type solar collecting apparatus,

The present invention relates to a dual vacuum tube type solar collecting apparatus, and more particularly, to a dual vacuum tube type solar collector capable of improving a heat accumulating speed and a collecting effect.

Today, technologies that use solar heat as an energy source include solar power plants, solar water heaters, solar boilers, and solar vehicles. Among them, the solar heat boiler is connected to a tank for storing water by using a plurality of arranged heat collecting tubes as a heating medium, and hot water and cold water pipes for heating are connected to the tank. Accordingly, in the conventional solar heating boiler, heat and hot water are supplied by using the energy collected through the heat collecting pipe during the daytime.

However, such a conventional solar heating boiler has a disadvantage in that the supply efficiency of heating and hot water is low. For example, the temperature of the heating and hot water is not constant depending on the heating level of the house in which the solar heating boiler is installed, and deviations occur severely, resulting in poor heating and supply of hot water.

In addition, the conventional solar heating boiler is intended to be installed in order to save energy by using natural energy, but it is necessary to additionally provide an auxiliary boiler such as an oil boiler or a gas boiler, It is true. This is because the cost of installing the auxiliary heating means is additionally required, and when the auxiliary heating means such as the boiler is operated, the amount of electricity used increases, resulting in waste of resources.

In addition, the conventional solar thermal boiler has a problem of not only low thermal efficiency, frequent failures, poor performance, and high cost compared to quality.

Korean Patent Publication No. 10-2013-0082280 (published on July 19, 2013)

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and it is an object of the present invention to provide a dual vacuum tube type solar collecting apparatus capable of increasing the heat storage rate and the heat collecting effect by naturally circulating the heating water using a double vacuum tube- There is.

Another object of the present invention is to provide a double vacuum tube which can supply heating water and hot water by heating water in a water heater with solar energy using a double vacuum tube type vacuum collection tube without using electricity, Type solar collectors.

Another aspect of the present invention is to provide a dual vacuum tube type solar collecting apparatus capable of improving the heat storage rate and the heat collecting effect by providing a reflector under the vacuum tube.

Another object of the present invention is to provide a dual vacuum tube type solar collecting apparatus which can be used together with existing oil boilers and gas boilers to reduce fuel costs.

The solution to the problem of the present invention is not limited to those mentioned above, and other solutions not mentioned can be clearly understood by those skilled in the art from the following description.

As a means for solving the above-mentioned technical problem, a dual vacuum tube type solar collecting apparatus according to the present invention supplies water to an internal space and stores the water, and a heating water supply pipe 141 and a hot water pipe 142 are connected, A replenishing tank 130 having a discharge pipe for discharging the water when the water has a water level higher than a predetermined height; A storage tank 120 for receiving water through a heating water supply pipe 141 of the supplementary tank 130 and storing the water at a predetermined height and discharging the stored water to heating water through a heating pipe 150; A plurality of water heaters are installed in the lower part of the heat storage tank 120. Water in the heat storage tank 120 is directly heated by solar heat and circulated with water in the heat storage tank 120, And a vacuum heat collecting tube 180 made of a double vacuum tube in which a vacuum is formed between the outer tube 181 and the inner tube 182 and a radiant heat absorbing coating 183 is formed on the outer surface of the inner tube 182, ); Water is supplied through the hot water pipe 142 of the replenishing tank 130 and flows into the water of the thermal storage tank 120 to heat the water by the thermal conduction, A heat exchange tube 170 for circulating the water through the circulation pipe 171 connected between the discharge port and the discharge port; And a connection pipe 143 which is connected between the heat storage tank 120 and the supplement tank 130 and sends the heat to the supplement tank 130 when the heating water stored in the heat accumulation tank 120 boils over, And the like.

The vacuum collection tube 180 includes an outer tube 181 made of a U-shaped glass tube having an upper portion opened and a lower portion sealed; The outer tube 181 and the upper tube 181 are connected to each other to form a vacuum between the outer tube 181 and the outer tube 181. The outer tube 181 is formed of a U- An inner pipe 182 through which water in the thermal storage tank 120 flows into and out of the inner space; And a radiation heat absorbing coating 183 on which a copper film layer is formed on the outer surface of the inner tube 182 and on which a black film layer for absorbing radiant heat is formed on the copper film layer .

The dual vacuum tube type solar collecting apparatus includes a hot wire installed in contact with the outside of a water pipe 140 for supplying water to the replenishing tank 130; And a control box 400 for setting and controlling the temperature of the hot wire, setting the temperature of the hot water, and controlling the supply of hot water and hot water according to the temperature of the hot water . Here, the control box 400 includes a heating temperature controller 410 for setting the temperature of the heating water; A heat line temperature controller 420 for setting a heating temperature of the heat line; And controls the supply of the heating water so as to use only hot water when the temperature of the heating water is equal to or lower than the set temperature, And a control unit for heating the hot wire according to the set temperature to prevent the water pipe 140 from being frozen during the winter season.

In the dual vacuum tube type solar collecting apparatus, a flat plate type reflector 190 or a curved type reflector 191 may be disposed under the vacuum collection tube 180.

According to the present invention, by using the double vacuum tube type vacuum collection tube to circulate heating water naturally, it is possible to increase the heat accumulation rate and the heat collecting effect, and it is possible to always supply clean hot water with excellent corrosion prevention property without water tapping.

In addition, because of the thermal efficiency of the tube system, high temperature hot water is generated, unlike the conventional solar heat, there is no danger of freezing, and the price is lower than other products.

In addition, because it uses solar energy, which is natural energy, it is semi-permanent and durable, environment-friendly. Installation cost is about 50 ~ 80% lower than other products according to the amount of sunshine and heating. There is an effect that can be recovered.

In addition, there is no risk of explosion or electric shock by not using electricity, oil and gas, and it is designed to withstand strong winds. Also, the shape is neat and sophisticated and does not harm the appearance even if it is installed in any place.

It can be used in combination with industrial water heater, swimming pool, fish farm, greenhouse, bathroom, factory, dormitory, domestic water heater, power house, single family, multi family, coal mine, pension house and other heating equipment. The fuel cost can be greatly reduced when used together.

The effects of the present invention are not limited to those mentioned above, and other effects not mentioned can be clearly understood by those skilled in the art from the following description.

1 to 8 are views showing a dual vacuum tube type solar collector according to a first preferred embodiment of the present invention,
1 is a perspective view of a dual vacuum tube type solar collecting apparatus 100,
2 is a front view of the dual vacuum tube type solar collecting apparatus 100,
3 is a view showing a state in which the heat exchange tube 170 is disposed inside the heat collecting tank 120,
4 is a perspective view showing a state in which a plurality of vacuum collection tubes 180 are connected to the heat collection tank 120,
5 is an internal sectional view seen from the side,
6 is a sectional view of the vacuum collection tube 180,
7 is a cross-sectional perspective view of the vacuum collection tube 180,
8 is a schematic view showing the control box 400. Fig.
9 to 11 are views showing a dual vacuum tube type solar collecting apparatus 200 according to a second preferred embodiment of the present invention,
9 is a view showing the structure of a dual vacuum tube type solar collector 200,
10 is an internal sectional view seen from the side,
11 is a cross-sectional view showing the curved reflection plate 191. Fig.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings, which will be readily apparent to those skilled in the art. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. In order to clearly explain the present invention in the drawings, parts not related to the description are omitted, and similar parts are denoted by similar reference numerals throughout the specification.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

First Embodiment of Double Vacuum Tube Type Solar Collector

FIG. 1 is a perspective view of a dual vacuum tube type solar collecting apparatus 100, FIG. 2 is a perspective view of a double vacuum tube type solar collector according to a first preferred embodiment of the present invention, 3 is a front view of the heat collecting apparatus 100. FIG. 3 is a view showing a heat exchanging tube 170 disposed inside the heat collecting tank 120. FIG. 4 is a view showing a state in which a plurality of vacuum collecting tubes 180 are installed in the heat collecting tank 120, FIG. 6 is a cross-sectional view of the vacuum collection tube 180, FIG. 7 is a cross-sectional perspective view of the vacuum collection tube 180, and FIG. 8 is a cross- Box 400. Fig.

1 to 3, a dual vacuum tube type solar collecting apparatus 100 according to a preferred embodiment of the present invention includes a frame 111, a heat storage tank 120, a replenishing tank 130, a water pipe 140, A heating water pipe 141, a hot water pipe 142, a connection pipe 143, a heating pipe 150, a hot water pipe 151, a heat exchange pipe 170 and a vacuum pipe 180 have.

Here, the frame 111 is a support for supporting the double vacuum-tube solar collecting apparatus 100, and may have a triangular structure on its side. At this time, the frame 111 may be made of a metal material including stainless steel and aluminum (Al), or may be heat treated and plated to improve abrasion resistance.

The heat storage tank 120 may be disposed above the frame 111. The heat storage tank 120 is a tank for storing hot water 121 and hot water, and may be formed of a metal material having a cylindrical shape.

A supplementary tank 130 for supplementing heating water to the heat storage tank 120 may be disposed at an upper portion of the heat storage tank 120. The supplemental tank 130 receives water from the water pipe 140 and replenishes the heating water to the heat storage tank 120 through the heating water supply pipe 141. At this time, the water pipe 140 may be connected to a tap water supply pipe.

The heat storage tank 120 and the heating water supply pipe 141 are separately connected to the hot water pipe 142 and the connection pipe 143 in the supplementary tank 130. At this time, the heating water supply pipe 141 supplies or replenishes the water stored in the supplement tank 130 to the heat storage tank 120. The hot water pipe 142 is a passage for supplying the water stored in the replenishing tank 130 to the heat exchange pipe 170 installed in the heat storage tank 120. The connection pipe 143 circulates the hot water stored in the heat storage tank 120 to the supplement tank 130 to be mixed with the cold water when the heating water boils over. In the present invention, the heating water of the storage tank 120 is discharged through the drain pipe when it is boiled. However, in the present invention, water can be saved by mixing the cold water with the replenishing tank 130.

Further, a discharge pipe (not shown) may be additionally provided in the replenishing tank 130. This discharge pipe can be configured to be automatically discharged when the water stored in the replenishing tank 130 is overflowed or has a water level higher than a predetermined height. For this purpose, the discharge pipe may be installed on the upper side of the replenishing tank 130 to discharge water downward.

The heat storage tank 120 replenishes the heating water from the supplement tank 130 through the heating water supply pipe 141 and is stored therein.

In addition, a heating pipe 150 and a hot water pipe 151 may be connected to the heat storage tank 120. At this time, the heating pipe 150 discharges heated water heated in the heat storage tank 120, and the hot water pipe 151 is connected to the heat exchange pipe 170 installed in the heat storage tank 120 And serves to discharge heated hot water.

The heat exchange tube 170 may be arranged to be submerged in the heating water or the heating water stored in the internal space of the heat storage tank 120. As shown in FIG. 3, the heat exchange pipe 170 may have a spiral or circular ring shape having a screw shape. However, it is not necessarily limited to this, but may be formed in various shapes and forms such as serrated, zigzag, wavy, and rectangular pulse shapes.

The water (cold water) of the replenishing tank 130 supplied to the heat exchanging pipe 170 through the heating water supply pipe 141 is circulated through the heat exchanging pipe 170, It is heated by the thermal conductivity of water. At this time, the water heated in the heat exchange pipe 170 may be discharged through the hot water pipe 151 to a faucet or a shower in the house. When water is not discharged to the hot water pipe 151, the water heated in the heat exchange pipe 170 may be fed back to the inlet of the heat exchange pipe 170 through the circulation pipe 171 . The circulation pipe 171 serves to return the water at the outlet of the heat exchange pipe 170 to the inlet of the heat exchange pipe 170.

The heat exchange tube 170 is configured to be submerged in the heating water 121 inside the heat storage tank 120 and is heated by the heat conduction of the heating water 121. Therefore, the heat exchange pipe 170 is divided to supply hot water separately from the heating water of the heat storage tank 120.

A plurality of vacuum collection tubes 180 may be connected to the lower part of the heat storage tank 120 to communicate with the inner space (see FIG. 4). The vacuum heat collecting tube 180 is connected to an upper end of the heat accumulating tank 120 and communicates with the internal space of the heat accumulating tank 120. Water stored in the heat accumulating tank 120 flows into / So as to form a double vacuum tube.

A plurality of tube insertion openings for inserting and installing the plurality of vacuum collection tubes 180 are formed in the lower end of the heat storage tank 120. The vacuum collecting tube 180 may be installed to be hermetically sealed by using a fixing packing (184 in FIG. 4) to the tube inlet of the heat storage tank 120.

6 and 7, the vacuum heat collecting tube 180 may include an outer tube 181, an inner tube 182, and a radiating heat absorbing film 183.

Here, the outer tube 181 may be formed of a U-shaped glass tube having an upper portion opened and a lower portion sealed. The inner tube 182 is disposed inside the outer tube 181 and is formed of a U-shaped glass tube having an upper portion opened and a lower portion sealed. The outer tube 181 and the upper portion are connected to each other, And the heating water may be formed to be accommodated in the inner space. The radiant heat absorbing coating 183 is formed on the outer surface of the inner tube 182 and may include a black film layer (not shown) and a copper film layer (not shown). Here, the copper film layer is formed on the outer surface of the inner tube 182, and the black film layer is formed on the copper film layer to absorb radiant heat due to the irradiation of the light source.

The vacuum tube 180 is formed to have a double pipe structure and a sealed vacuum chamber. In this state, a copper film is coated on the inside of the vacuum tube, that is, the portion forming the outer surface of the inner tube 182 to effectively absorb sunlight.

The vacuum tube 180 according to the embodiment of the present invention provides a vacuum insulation function so as to prevent the absorbed heat from escaping to the outside so as to maximize the thermal conductivity by radiant heat. The vacuum tube 180 has an outer tube 181 and an inner tube 182, A vacuum space is formed between them to perform vacuum insulation. The radiant heat absorbing coating 183 coated on the outer surface of the inner tube 182 may be composed of an absorbent such as copper oxide, carbon, etc., and is preferably coated in a coating form or a coated form.

Therefore, the sunlight passes through the outside of the vacuum tube, easily passes through the vacuum state, and is effectively absorbed by the coated coating on the inside of the vacuum tube. At this time, water is contained in the inner pipe 182, and it is possible to extend the water temperature to a level that can sufficiently use the water even in the summer or winter.

The vacuum collecting tube 180 may be coupled to an upper portion of the heat storage tank 120 and a lower portion coupled to a lower frame 112 disposed at a lower front end of the frame 111. At this time, the opposite end 113 supporting the frame 111 is disposed at the lower end of the lower frame 112.

In the dual vacuum tube type solar collecting apparatus 100, the heated water rises into the vacuum heat collecting tube 180 by the solar radiation heat and enters the interior of the heat storage tank 120. Inside the heat storage tank 120, The water having a relatively low temperature flows into the vacuum collection tube 180 and is circulated. As the circulation process of the water is repeated, the heating water stored in the heat storage tank 120 is heated. When the heating water of the heat storage tank 120 is heated, the heat exchange tube 170 disposed inside the heat storage tank 120 is heated to produce hot water.

In the double tube type solar collecting apparatus 100 according to the preferred embodiment of the present invention, the temperature of the heating water is set so as to control the heating water and the supply of hot water, And a control box 400 for setting and controlling the temperature of the hot wire installed in the heat exchanger 140.

Here, the control box 400 may be installed in the rear frame 111 of the double vacuum tube type solar thermal collector 100 (see FIG. 11). In addition, the control box 400 may be installed outside or inside a building or a house, in addition to the dual vacuum tube type solar collector 100.

The control box 400 may include a heating temperature controller 410, a heating temperature controller 420, and a controller (not shown).

Here, the heating temperature controller 410 is a regulator for setting the temperature of the heating water, and may be a rotary switch. The hot-wire temperature regulator 420 is a regulator for setting a heating temperature of a hot wire (not shown) disposed in contact with an outer surface of the water pipe 140, and may be a rotary switch. At this time, the hot wire serves to heat the water pipe 140 to prevent the water pipe 140 from being frozen or frozen during the winter season. The control unit controls the supply of heating water and hot water when the temperature of the heating water is equal to or higher than the set temperature and controls the supply of heating water to use only hot water when the temperature of the heating water is lower than the set temperature, It is controlled to heat the hot wire in accordance with the set temperature of the hot-wire temperature controller 420 to prevent freezing in winter.

Second Embodiment of Vacuum Tube Type Solar Collector

9 to 10 are views showing a dual vacuum tube type solar collecting apparatus according to a second preferred embodiment of the present invention. FIG. 9 is a diagram showing the construction of a dual vacuum tube type solar collecting apparatus 200, And FIG. 11 is a sectional view showing the curved reflection plate 191. FIG.

The double vacuum tube type solar collecting apparatus 200 according to the second embodiment of the present invention is characterized in that the reflector plates 190 and 191 are installed under the vacuum tube 180 in the dual vacuum tube solar collecting apparatus 100 of the first embodiment, Speed and heat collection effect. At this time, the reflection plates 190 and 191 may be installed on the frame 111 of the double vacuum tube type solar thermal collector 100, and may be made of a metal material.

10 illustrates a planar reflector 190. The vacuum collector tubes 180 may be installed on a frame 111 below a plurality of vacuum collection tubes 180 provided on the front surface of the dual vacuum tube type solar collector 100, have. The reflection plate 190 reflects the light passing through the vacuum collection tube 180 and the vacuum collection tube 180 to improve the heat storage rate and the heat collecting effect.

11 shows a curved reflector 191. The curved reflector 191 may be installed on a frame 111 under a plurality of vacuum tubes 180 disposed on the front surface of the dual vacuum tube type solar collector 100. [ The curved reflection plate 191 may have a curved shape so that the light passing through the vacuum collection tube 180 and the light passing through the reflection tube 180 may be reflected by the vacuum collection tube 180. The curved reflection plate 191 may have a semicircular shape, an elliptical shape, a triangular shape, a saw shape, or the like. The curved reflection plate 191 having any one of these shapes may be integrally formed with a triangular or serrated protrusion on a surface reflecting sunlight. At this time, the projecting portion reflects light of various angles incident on the reflection plate to concentrate on the vacuum collection tube 180, thereby improving the heat storage rate and the heat collecting effect.

In the dual vacuum tube type solar collector according to the present invention thus configured, the heating water is naturally circulated by using a double vacuum tube type vacuum collecting tube, and the light is condensed by the vacuum collecting tube by using the reflector to improve the heat accumulation rate and the heat collecting effect The technical problem of the present invention can be solved.

It will be apparent to those skilled in the art that various modifications and changes can be made in the present invention without departing from the spirit or scope of the present invention as defined by the appended claims. It will be appreciated that such modifications and variations are intended to fall within the scope of the following claims.

100: First Embodiment of Double Vacuum Tube Type Solar Collector
111: Frame 112: Lower frame
113: opposite 120: storage tank
121: Number of heating 130: Supplementary tank
140: Water piping 141: Heating water supply pipe
142: Hot water pipe 143: Connector
150: Heating piping 151: Hot water piping
170: heat exchange tube 171: circulation tube
180: vacuum tube
181: Appearance 182: Inner pipe
183: Radiant heat absorbing coating 184: Fixed packing
190: Plate type reflector 191: Curved type reflector
200: Second Embodiment of Double Vacuum Tube Type Solar Collector
400: Control box 410: Heating temperature controller
420: Hot-wire temperature controller

Claims (4)

A supplemental tank 130 connected to the heating water supply pipe 141 and the hot water pipe 142 and having a discharge pipe for discharging the water when the stored water has a water level higher than a predetermined height;
A storage tank 120 for receiving water through a heating water supply pipe 141 of the supplementary tank 130 and storing the water at a predetermined height and discharging the stored water to heating water through a heating pipe 150;
A plurality of water heaters are installed in the lower part of the heat storage tank 120. Water in the heat storage tank 120 is directly heated by solar heat and circulated with water in the heat storage tank 120, And a vacuum heat collecting tube 180 made of a double vacuum tube in which a vacuum is formed between the outer tube 181 and the inner tube 182 and a radiant heat absorbing coating 183 is formed on the outer surface of the inner tube 182, );
Water is supplied through the hot water pipe 142 of the replenishing tank 130 and flows into the water of the thermal storage tank 120 to heat the water by the thermal conduction, A heat exchange tube 170 for circulating the water through the circulation pipe 171 connected between the discharge port and the discharge port; And
A connection pipe 143 which is connected between the heat storage tank 120 and the supplement tank 130 and sends the water to the supplement tank 130 when the heating water stored in the heat storage tank 120 boils over and circulates;
And a second vacuum tube type solar collector.
The method according to claim 1,
The vacuum collecting tube 180 is provided with a vacuum-
An outer tube 181 made of a U-shaped glass tube having an upper portion opened and a lower portion sealed;
The outer tube 181 and the upper tube 181 are connected to each other to form a vacuum between the outer tube 181 and the outer tube 181, An inner pipe 182 through which water in the thermal storage tank 120 flows into and out of the inner space; And
A radiation heat absorbing coating 183 on which a copper film layer is formed on the outer surface of the inner tube 182 and a black film layer is formed on the copper film layer to absorb radiant heat according to a light source irradiation;
And a second vacuum tube type solar collector.
The method according to claim 1,
In the double vacuum tube type solar collector,
A hot wire installed in contact with the outside of the water pipe 140 for supplying water to the replenishing tank 130; And
A control box 400 for setting and controlling the temperature of the hot wire, setting the temperature of the hot water, and controlling the supply of hot water and hot water according to the temperature of the hot water,
The control box (400)
A heating temperature controller 410 for setting the temperature of the heating water;
A heat line temperature controller 420 for setting a heating temperature of the heat line; And
And controls the supply of the heating water so as to use only hot water when the temperature of the heating water is equal to or lower than the set temperature, A controller for heating the hot wire according to the temperature to prevent the water pipe 140 from freezing during winter;
And a second vacuum tube type solar collector.
The method according to claim 1,
In the double vacuum tube type solar collector,
And a flat plate type reflector 190 or a curved type reflector 191 is disposed below the vacuum collection tube 180.

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