KR100716508B1 - A solar-heated hot-water boiler - Google Patents

Abstract

The present invention relates to a solar hot water boiler.

The present invention is filled with a high temperature heat transfer medium in a heating tank connected to a plurality of heat collecting pipes, so that the water passing through the circulation pipe can be heated quickly and sufficiently through the heat collecting of the heater member or solar energy. In addition, the heat transfer medium whose temperature is lowered while passing through the circulation pipe is configured to execute a cycle of repeated recirculation, which is reheated as the natural circulation is caused by convection. Thus, heating and The hot water supply can be made smoothly while maximizing the efficiency as an alternative energy.

Solar heat, hot water boiler, high temperature heat transfer medium, circulation furnace, screw, impeller, circulation tank

Description

Solar hot water boiler {a solar-heated hot-water boiler}

1 is a perspective view showing the structure of a solar hot water boiler according to the present invention.

Figure 2 is a side view showing the structure of a solar hot water boiler according to the present invention.

3 is a cross-sectional view taken along the line A-A of Figure 1 as an embodiment of the present invention.

4 is a cross-sectional view taken along the line B-B of Figure 1 as an embodiment of the present invention.

Figure 5 is a schematic cross-sectional view showing a high temperature heat transfer medium circulation state of the present invention.

Explanation of symbols on the main parts of the drawings

10; Heating tank 11; Cold water inlet pipe

12; Hot water discharge pipe 13; Circulatory tube

14; Replenishment inlet 16; Check valve

17; Pressurizer 20; Heater element

30; Collecting section 31; Heat collecting tube

32; Reflector 40; Circulation tank

41; High pressure hose coupling 42; Shut-off valve

50; High temperature heat transfer medium 60; Media circulation

61; Circuit 62; screw

63; Impeller 70; Drain valve

The present invention relates to a solar hot water boiler, and more particularly, after the high temperature heat transfer medium is filled in a heating tank of a solar boiler having a hot water pipe installed thereon, the high temperature heat transfer medium is naturally circulated by convection. It relates to a solar hot water boiler that ensures that the heating and hot water supply is always performed smoothly at night.

In recent years, in the face of the problem of air pollution caused by excessive use of fossil raw materials and the depletion of resources, the technology of using solar heat as an alternative energy source has been developed. The technology using the solar heat as an energy source is a solar power plant and a solar boiler. And solar vehicles.

The solar boiler connected a plurality of heat collecting tubes arranged with a tank for storing water as a heat medium, and the hot water and cold water pipes for heating were connected to the tank. Accordingly, the conventional solar boiler is provided with heating and hot water supply using energy collected through the collecting pipe during the day.

However, such a solar boiler has the disadvantage of extremely low efficiency of heating and hot water supply using natural energy.

In other words, even if the heat collection efficiency of solar heat is stable during the day, the break point of the water stored in the tank is 100 ℃, so when the continuous use of heating and hot water is made, the temperature of the heating and hot water is not always constant and the deviation occurs severely. It was causing difficulties in use, such as a poor supply of heating and hot water.

In addition, the conventional solar boiler is intended to install the natural energy to induce the saving of the processing energy, but in the external environment where the heat collection efficiency is deteriorated, that is, in the state where solar heat collection such as winter or cloudy days is almost impossible. Since the function is virtually lost, additional auxiliary heating means such as oil boilers and gas boilers have to be additionally equipped.

Therefore, this requires additional cost and space according to the installation of the auxiliary heating means, as well as the use of auxiliary heating means such as boilers, rather than the increase in the use of electricity, there was a significant waste of resources.

The present invention has been made in order to solve the above-mentioned conventional problems, by filling a high temperature heat transfer medium in a heating tank connected to a plurality of heat collecting pipes arranged, the water passing through the circulation pipe is collected by the heater member or solar energy. The heat transfer medium, which can be heated quickly and sufficiently through the circulation pipe, and whose temperature is lowered as it passes through the circulation pipe, provides a solar hot water boiler that constitutes a line that executes a cycle of recirculation where the natural circulation is reheated by convection. The purpose is to.

Solar hot water boiler of the present invention for achieving the above object, the heating tank is provided with a cold water inlet pipe and hot water discharge pipe for heating; A heater member provided in the heating tank; A heat collecting part including a heat collecting tube connected to the heating tank at an upper side thereof, and a reflecting plate disposed adjacent to a bottom of the heat collecting tube to collect solar heat; A circulation tank connected to the lower side of the heat collecting tube; The natural circulation is made in the heating tank, the heat collecting portion, and the circulation tank, and the high temperature heat transfer medium increases the temperature of the cold water and hot water for heating by raising to a predetermined temperature by the heat of the heat collecting portion or the heating of the heater member. ; A medium circulation unit connecting the heating tank and the circulation tank to induce natural circulation of the high temperature heat transfer medium; Characterized in that comprises a configuration.

According to another aspect, the high-temperature heat transfer medium is a circulation in which the low-temperature heat transfer medium is supplied to the heating tank → medium circulation portion → circulation tank → collecting portion → heating tank due to convection from the collection of the heat collecting portion or the heating of the heating portion. The flow is guided along the cycle.

According to another aspect, the upper end of the heat collecting portion is connected to the upper surface of the heating tank, the upper end of the medium circulation portion connected to the lower side of the heat collecting portion so that the high temperature heat transfer medium is naturally circulated in the convection phenomenon is a heating tank It is characterized in that connected to one side of the lower side.

According to another aspect, the heating tank further comprises a pressure checker for checking the pressure in the heating tank according to the temperature rise of the high temperature heat transfer medium, and a supplementary inlet for replenishing the high temperature heat transfer medium. do.

According to yet another aspect, the connection portion between the heating tank and the heat collecting tube, characterized in that it further comprises a check valve for preventing the back flow to prevent the high temperature heat transfer medium introduced into the heating tank to be returned to the circulation tank. .

According to yet another aspect, the medium circulation unit, the circulation passage connected to one end of the circulation tank from one side of the heating tank; A screw provided in the circulation path and rotating to facilitate circulation of the high temperature heat transfer medium; An impeller connected to the screw at an outer side of the circulation path and rotating by the natural wind to rotate the screw; Characterized in that comprises a configuration.

According to another aspect, the high temperature heat transfer medium is an organic heat transfer medium containing a eutectic mixture of diphenyl and diphenyl ether with a maximum heating temperature of about 400 ° C. or less, or a maximum heating temperature of about 400 ° C. It is characterized in that any one of the inorganic heat transfer medium containing mercury, molten metal, HTS (process mixture of nitrate and nitrite).

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

1 is a perspective view showing a solar hot water boiler structure of the present invention, Figure 2 is a side view showing a solar hot water boiler structure of the present invention, Figure 3 is a cross-sectional view taken along line AA of Figure 1, Figure 4 is a cross-sectional view taken along the line BB of Figure 1 5 is a schematic cross-sectional view showing a circulation state of the high temperature heat transfer medium.

1 to 5, the solar hot water boiler of the present invention, the heating tank 10, the heater member 20, the heat collecting unit 30, the circulation tank 40, the high temperature heat transfer medium 50, and And a medium circulation unit 60.

The heating tank 10 is provided with a space in which the high temperature heat transfer medium 50 is filled, and the heating tank in which the heating water flowing in through the cold water inlet pipe 11 is wound in a coil shape. The cold water inflow pipe 11 and the hot water discharge pipe 12 are exposed to the outside of the heating tank 10 so as to be heated while passing through the circulation pipe 13 embedded in the 10) to be supplied to the outside through the hot water discharge pipe 12. The heater member 20 is additionally configured in the heating tank 10.

And, the upper side of the heating tank 10, a multi-stage connector (not shown) is provided, the heat collecting pipe 31 to be described later of the heat collecting portion 30 is connected to the connector to maintain a predetermined inclination angle The heating tank 10 and the heat collecting tube 31 form a structure in communication with each other.

At this time, the upper surface of the heating tank 10, when the temperature of the high temperature heat transfer medium 50 rises, the pressure regulator 17 for checking the pressure in the heating tank 10 is expanded rapidly, and the high temperature heat transfer A refill inlet 14 for refilling the medium 50 is configured.

In addition, when the circulation is made by the convection of the high temperature heat transfer medium 50 from the circulation tank 40 toward the heating tank 10, the high temperature heat transfer medium 50 is again circulated in the tank 40. The check valve 16 for preventing a backflow which prevents return to () is comprised.

The heater member 20 is a heating operation to increase the temperature of the high temperature heat transfer medium 50 in the heating tank 10 in an external condition where it is impossible to collect heat at night or by solar energy. It is configured to be installed so that the heating operation is controlled by the drive circuit portion not shown.

The heat collecting part 30 includes a plurality of heat collecting pipes 31 arranged in parallel and close to collect solar heat, and a reflecting plate 32 supporting a lower portion of the heat collecting pipes 31. 31) forms a double tube structure with excellent heat retention, one side of which is connected to the upper surface of the heating tank 10 so that the high temperature heat transfer medium 50 can flow into the heating tank 10 by convection. It forms a structure connected to the circulation tank 40 located at a lower height than the heating tank (10).

The circulation tank 40 is connected to the lower side of the heat collecting tube 31 having a double heat insulating tube structure, is connected through the heat collecting tube 31 and the high-pressure lake connector 41, the circulation tank ( One end of the 40 is provided with a shutoff valve 42 for forcibly blocking the circulation of the high temperature heat transfer medium 50.

The shutoff valve 42 is configured to be opened and closed by manual operation, but may be configured electronically, in which case it is preferable to apply a solenoid valve.

The high temperature heat transfer medium 50 rises to a predetermined temperature by the heat collected by the heat collecting portion 30 or by the heating of the heater member 20, and the heating tank 10 → medium circulation portion 60 due to convection. ) → circulation tank (40) → collecting portion (30) → heating tank 10, the flow is guided along the circulation cycle, which is heated by solar energy while passing through the heat collecting pipe (31) It is introduced into the furnace heating tank (10), in order to maintain a stable temperature, the organic heating medium containing a eutectic mixture of diphenyl and diphenyl ether, the maximum heating temperature is preferably within about 400 ℃, or One of the inorganic heat transfer media including mercury, molten metal and HTS (a process mixture of nitrate and nitrite) is optionally used, and the maximum heating temperature exceeds about 400 ° C. Among them, organic heat transfer media is preferable. Use Is configured to.

The medium circulation unit 60 is connected to the heating tank 10 and the circulation tank 40 to induce the natural circulation of the high temperature heat transfer medium 50 by convection, circulation circuit 61, screw 62, and an impeller 63.

The circulation path 61 is a pipe connected to one end of the circulation tank 40 from one side of the heating tank 10, and the screw 62 is provided in the circulation path 61. It is a component that rotates to facilitate the circulation of 50.

The impeller 63, which is installed in the state exposed from the outside of the circulation path 61 to the top, forms a structure connected to the screw 62, which is rotated by natural wind to forcibly rotate the screw 62 It is a component.

Hereinafter, reference numeral 70 that is not described shows a drain valve installed in the heating tank 10 and the circulation tank 40, respectively.

Referring to Figures 1 to 5 attached to the operation of one embodiment of the present invention configured as described above are as follows.

First, in the daytime, when the heat collecting efficiency of the solar heat is increased by the heat collecting part 30 including the heat collecting tube 31 and the reflecting plate 32, the heat by the heat collecting is transferred to the heating tank 10. At this time, not only the inside of the heating tank 10 but also the heat collecting tube 31, and the inside of the circulation path 61 of the medium circulation unit 60 connecting the heating tank 10 and the heat collecting tube 31 to a high temperature heat transfer medium. 50 is filled, the high temperature heat transfer medium 50 is raised to a predetermined temperature (about 250 ~ 300 ℃) by the heat of the heat collecting portion (10).

Then, the high temperature heat transfer medium 50 heated to the high temperature is supplied to the upper side in the heating tank 10, and accordingly of the circulation pipe 13 wound in the coil form in the heating tank 10 The water is heated to the required temperature to provide the heating water, wherein the heat transfer medium 50 having a low temperature while heating the water in the circulation pipe 13 is sufficiently heated so that the heat transfer medium 50 flows into the heating tank 10. Due to the convection generated by mixing with the natural circulation is returned to the circulation path 61 → circulation tank 40 → heat collecting tube 31 → heating tank 10 included in the medium circulation unit (60).

Therefore, the high temperature heat transfer medium 50 filled in the heating tank 10 is to maintain a constant high temperature at all times, thereby through the cold water inlet pipe 11 into the interior of the heating tank 10. Water that is introduced and flows along the circulation pipe 13 is discharged through the hot water discharge pipe 12 while being heated to a sufficient temperature.

In other words, the high temperature heat transfer medium 50 in the heating tank 10 has a low temperature while heating the water passing through the circulation pipe 13, which is introduced into the circulation path 61 again, and the cooled heat transfer. The medium flows back into the circulation tank 40 located at a lower position than the heating tank 10 by the rotation of the screw 62 forcibly rotated by the impeller 63, and the heat transfer introduced into the circulation tank 40. The medium 50 is to be reheated while passing through the heat collecting pipe 31 again to execute a cycle of recirculation recycling supplied to the heating tank 10.

Accordingly, the high temperature heat transfer medium 50 in the heating tank 10 passes through the cold water inlet pipe 11, the circulation pipe 13, and the hot water discharge pipe 12 for heating while always maintaining a constant high temperature. Because it is to heat the water, it will be able to maintain a constant temperature of heating and hot water.

Here, a check valve 16 for preventing backflow is provided at a portion connecting the heating tank 10 and the heat collecting tube 31, and the check valve 33 is a high temperature heat transfer medium 50 in a circulation tank ( 40) to prevent backflow.

On the other hand, when the solar heat collection is not possible at night or the weather is not good due to poor solar heat collection, the heater member 20 in the heating tank 10 is heated. Then, the high temperature heat transfer medium 50 filled in the heating tank 10 rises to a predetermined temperature (about 250 to 300 ° C.) from heat caused by the heating operation of the heater member 20.

At this time, the heated high temperature heat transfer medium 50 is returned to the circulation passage 61 → circulation tank 40 → collecting pipe 31 → heating tank 10 included in the medium circulation part 60 due to convection. Natural circulation is achieved.

Accordingly, the high temperature heat transfer medium 50 filled in the heating tank 10 maintains a constant high temperature at all times, while the cold water inlet pipe 11, the circulation pipe 13, and hot water therein. It is possible to heat the surface of the discharge pipe (12).

Then, the water flowing through the cold water inlet pipe 11 at night and discharged through the hot water discharge pipe 12 is heated to a predetermined temperature by the high temperature heat transfer medium 50 in which the temperature rises to a predetermined temperature. Accordingly, the heating and hot water supply can be made smoothly.

That is, the high temperature heat transfer medium 50 in the heating tank 10 has a temperature rise and at the same time a low temperature heat transfer medium is introduced into the circulation path 61 by the internal pressure, the heat transfer medium is lowered the introduced temperature Is again introduced into the circulation tank 40 located at a lower level than the heating tank 10 from the rotation of the screw 62 in the circulation path 61 rotated by the impeller 63, the circulation tank 40 The high temperature heat transfer medium 50 introduced is recycled to the heating tank 10 via the heat collecting pipe 31 again by convection.

Accordingly, the high temperature heat transfer medium 50 in the heating tank 10 passes through the cold water inlet pipe 11, the circulation pipe 13, and the hot water discharge pipe 12 for heating while maintaining a constant temperature at all times at night. While warming the water, the temperature of the heating and hot water can be kept constant.

Here, the pressurizer 17 provided in the heating tank 10 checks the pressure in the heating tank 10 caused by the high temperature heat transfer medium 50, thereby rapidly expanding the high temperature heat transfer medium 50. To prevent accidents.

As described above, the present invention can smoothly supply heating as well as hot water by itself without any additional equipment even under adverse conditions in which daytime and nighttime or solar heat collection is not properly performed. There is convenience in maintenance.

As described above, the present invention is a high temperature for rapidly increasing the temperature from the heating operation of the heater member or the collection of solar energy so as to heat the water passing through the circulation pipe in the heating tank connected to the plurality of heat collecting pipes arranged The heat transfer medium filled with the heat transfer medium and heating the water passing through the circulation tube has a low temperature, and constitutes a line in which a cycle of repeated recirculation is performed, which is reheated as the natural circulation occurs due to convection. It is possible to obtain the effect of maximizing the efficiency as alternative energy while allowing the heating and hot water supply required at any time.

The present invention is not limited to the above-described specific preferred embodiments, and various modifications can be made by those skilled in the art without departing from the gist of the present invention as claimed in the claims. Such changes are intended to fall within the scope of the claims.

Claims (7)

A heating tank provided with a cold water inlet pipe for heating and a hot water discharge pipe, a heater member provided in the heating tank, and a reflecting plate installed adjacent to the bottom of the heat collecting tube so as to collect a heat collecting tube connected to the heating tank and solar heat. Collecting unit comprising a, a circulation tank connected to the lower side of the collecting tube, the natural circulation is made in the heating tank and the collecting portion and the circulation tank and a predetermined temperature by the heat generated by the heat of the heat collecting portion or the heater member A high temperature heat transfer medium for raising the temperature of cold water and hot water for heating, and a medium circulation unit connecting the heating tank and the circulation tank to induce natural circulation of the high temperature heat transfer medium; The medium circulation unit, the circulation passage connected to one end of the circulation tank from one side of the heating tank below; A screw provided in the circulation path and rotating to facilitate circulation of the high temperature heat transfer medium; An impeller connected to the screw at an outer side of the circulation path and rotating by the natural wind to rotate the screw; Solar hot water boiler, characterized in that it comprises a. The method of claim 1, wherein the high temperature heat transfer medium, The heat transfer medium having a low temperature due to convection from the collection of the heat collecting portion or the heating portion of the heat collecting portion is guided by a flow along the circulation cycle supplied to the heating tank → medium circulation portion → circulation tank → collecting portion → heating tank. Solar hot water boiler. The method of claim 2, wherein the high temperature heat transfer medium is naturally circulated in a convection phenomenon, And an upper end of the heat collecting unit is connected to an upper surface of the heating tank, and an upper end of the medium circulation unit connected to the lower side of the collecting tank is connected to a lower side of one surface of the heating tank. According to claim 1, The heating tank, A solar hot water boiler, characterized by further comprising a pressure inlet for checking the pressure in the heating tank according to the temperature rise of the high temperature heat transfer medium, and a supplementary inlet for replenishment of the high temperature heat transfer medium. According to claim 1, At the connection portion of the heating tank and the heat collecting pipe, A solar hot water boiler, characterized in that it further comprises a check valve for preventing the back flow to prevent the high temperature heat transfer medium introduced into the heating tank to be returned to the circulation tank. delete The method of claim 1, wherein the high temperature heat transfer medium, Organic heating medium containing a eutectic mixture of diphenyl and diphenyl ether with a maximum heating temperature of about 400 ° C. or less, or a mercury, molten metal, HTS (nitrate and Solar hot water boiler, characterized in that any one of the inorganic heat transfer medium containing a nitrite process mixture).

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