KR200435845Y1 - Fully enclosed solar hot water heater - Google Patents

Abstract

The present invention relates to a fully enclosed solar hot water heater, comprising: a solar heat collector for heating and heating a solar hot water heater using solar heat; A heating heat storage tank connected to the heat medium supply pipe completely sealed to the solar heat collector; A hot water storage tank connected in series with the heating heat storage tank and connected to a solar heat collector and a heat-sealed heat recovery tube; A heat medium circulation pump installed on the heat medium recovery pipe to circulate the heat medium; A hermetic expansion tank connected to the heat medium recovery pipe between the heat medium circulation pump and the hot water storage tank to accommodate the pressure rise of the heat medium; An auxiliary boiler connected to the heating heat storage tank and the hot water storage heat storage tank to heat and supply heating water and hot water; A heating water circulation pump for circulating the heating water supplied from the auxiliary boiler to the heating water receiving pipe; It is installed in the heating water return pipe; electric triangular inlet to introduce the heating return to the heat storage tank or auxiliary boiler; characterized in that configured to include.

Solar heat, collector, hot water, hot water, heating, heat storage tank, boiler

Description

Closing Solar Heater

1 is a block diagram showing a conventional open-type solar hot water heater.

Figure 2 is a block diagram showing an open-type solar hot water heater according to another conventional example.

Figure 3 is a block diagram showing a completely sealed solar hot water heater according to the present invention.

Figure 4 is a front perspective view of the solar hot water heater according to the present invention.

5 is a plan view of the solar hot water heater according to the present invention.

6 is a view showing a double jacket structure of the heating heat storage tank according to the present invention.

7 is a control system diagram of a solar hot water heater according to the present invention.

<Description of the symbols for the main parts of the drawings>

10: solar collector 11: heat medium supply pipe

12: safety valve 13: heat storage tank

14: heat exchanger for hot water 15: built-in heat exchanger

16: open expansion tank 17: heat medium circulation pump

18: heat recovery pipe 20: auxiliary boiler

21: the first hot water supply pipe 22: the second hot water supply pipe

30: heating water circulation pump 31: the first heating water supply pipe

32: second heating water supply pipe 33: heating water return pipe

40: ball tap 41: direct entry pipe

50: solar collector 51: heat medium supply pipe

52: safety valve 53: separate heat exchanger

54: open expansion tank 55: heat medium circulation pump

56: heat recovery pipe 57: heat storage tank

58: hot water heat exchanger 59: hot water circulation pump

60: auxiliary boiler 61: the first hot water supply pipe

62: second hot water supply pipe 70: heating water circulation pump

71: first heating water supply pipe 72: second heating water supply pipe

73: heating return pipe 80: ball tap

81: direct entry pipe

100: solar collector 101: heat medium supply pipe

102: heat medium recovery pipe 110: heat radiation device

111: bypass pipe 112: circulation pump

113: radiator 120: heating heat storage tank

121: first heating water supply pipe 130: connector

140: hot water storage tank 141: heat medium circulation pump

142: hermetic expansion tank 143: first hot water supply pipe

150: auxiliary boiler 151: second hot water supply pipe

152: second heating water supply pipe 153: heating water return pipe

154: heating water circulation pump 155: electric three-way valve (valve)

160: ball tap 161: direct entry pipe

The present invention relates to a fully enclosed solar hot water heater, and more particularly to a heat exchanger-type fully enclosed solar hot water heater using a separate heat collecting medium for preventing freezing in winter.

In general, solar heat of the solar system is a clean energy that replaces a limited amount of fossil fuel, and is an energy source that is in the spotlight as the most easily obtainable energy source of high efficiency among various alternative energy.

The solar hot water heater consists of a heat collecting medium piping system that collects solar heat and heats the hot water storage tank and the heating heat storage tank, and a hot water circulation system that uses solar-heated heating water and hot water for hot water and heating.

The collecting medium piping system is divided into a closed type and an open type according to whether the system is open, divided into a double jacket method, a tank built-in heat exchange method, and a separate heat exchange method according to the heat exchange method. It is divided into paths.

In addition, the hot water (hot water) circulation system is classified into a series preheating method and a parallel preheating method according to the heating water circulation path of the solar heating heat storage tank.

Referring to the accompanying drawings of the conventional solar hot water heater, the solar heat collector 10 is installed outdoors, the heat storage tank 13 is connected to the heat collector 10 and the heat collecting medium piping system, and the heat storage tank An open expansion tank 16 connected to 13 and a heat medium circulation pump 17 for circulating the heat medium flowing in the heat collecting medium piping system.

The heat storage tank 13 includes upper and lower heat exchangers 14 and a built-in heat exchanger 15 which are copper coil heat exchangers, respectively, and the solar heat collector 10 has a built-in heat exchange of the heat storage tank 13. It is connected with the group 15.

On the other hand, the heat collecting medium piping system is a pipe connecting the above-described solar collector 10, heat storage tank 13, open expansion tank 16, the heat medium circulation pump (17).

That is, the solar collector 10 and the heat storage tank 13 are connected to the heat medium supply pipe 11, and a safety valve 12 is installed on the heat medium supply pipe 11, so that the safety valve 12 is expanded when the heat medium is expanded. As it opens, the heat medium is discharged to the outside.

The heat medium circulation pump 17 and the solar collector 10 are connected to the heat medium recovery pipe 18.

Therefore, when the flow of the heat medium is described, the heat medium circulating through the heat collecting medium piping system by the heat medium circulation pump 17 is heated while passing through the solar heat collector 10, and the heated heat medium is a built-in heat exchanger of the heat storage tank 13. Heat-exchanged with the water in the heat storage tank 13 while being introduced into the water 15 to heat the water in the heat storage tank 13, and then discharged into the open expansion tank 16 and again by the heat medium circulation pump 17. It is supplied to and heated again.

In addition, the hot water (hot water) system of the solar hot water heater, one end of the hot water heat exchanger 14 built in the heat storage tank 13 is directly connected as a cold water supply source and a direct inlet pipe 41 to receive cold water The other end of the hot water heat exchanger 14 is connected to the auxiliary boiler 20 as the first hot water supply pipe 21, and the cold water flowing in the hot water heat exchanger 14 is exchanged with hot water in the heat storage tank 13. After the indirect heating is supplied to the auxiliary boiler 20 through the first hot water supply pipe (21).

In addition, the auxiliary boiler 20 is heated indirectly by the hot water heat exchanger 14 to further heat cold water introduced thereto, and then is supplied to the hot water supply (hot water) through the second hot water supply pipe 22.

In addition, the heating system of the solar hot water heater, the heat storage tank 13 and the auxiliary boiler 20 is connected as the first heating water supply pipe 31, the hot water, that is, the heating water in the heat storage tank 13 heat exchanged to the auxiliary boiler 20. Is supplied, the auxiliary boiler 20 is connected to the heating element to be heated and the second heating water supply pipe 32, the heating element and the heat storage tank 13 is connected to the heating water return pipe 33 and finished heating Heating water flows into the heat storage tank 13.

In addition, a heating water circulation pump 30 for forcibly circulating heating water is configured on the heating water return pipe 33, and one side of the heating water return pipe 33 is connected to a ball tap 40 in which cold water is stored to supply cold water. Receive.

However, such a conventional solar hot water heater has the following problems.

First, the conventional solar hot water heater has a problem that the heat exchange performance of the copper coil type hot water and the built-in heat exchanger 14, 15 is always submerged in the water of the heat storage tank 13, so that the heat exchange performance is significantly reduced within a short period of time due to the deposition of the scale. .

Second, since the heat collecting medium piping system is open, the oxidation of the piping system is accelerated due to the introduction of external air into the pipe during the opening operation of the safety valve 12, thereby shortening the lifespan, and reducing the inside of the pipe due to the air introduced into the pipe. There is a problem that a circulation disorder occurs due to air trouble when air flows.

Third, the hot water in the heat storage tank 13 indirectly heats the cold water flowing in the hot water heat exchanger 14 while passing through the hot water heat exchanger 14 above the heat storage tank 13, which is directly compared with the direct heat storage method. Hot water temperature is significantly low.

Fourth, since the heating return after the heating operation is unconditionally returned to the heat storage tank (13), when the water in the heat storage tank 13 is low temperature, as a result, the auxiliary boiler 20 is all heated, resulting in a large fuel consumption. have.

Fifth, in the summer season, because the heat collecting medium is overheated, the pressure in the plumbing pipe increases, so that the heat collecting medium is frequently discharged, and thus the operation is stopped, resulting in loss of the heat collecting medium.

2 is a view showing a conventional solar hot water heater according to another embodiment, a solar heat collector 50 installed outdoors, and a separate heat exchanger 53 connected to the heat collector 50 and a heat collecting medium piping system. ), An open expansion tank (54) connected to the primary side of the separation type heat exchanger (53), and a heat medium circulation pump (55) for circulating the heat medium flowing in the heat collecting medium piping system.

Then, the secondary side of the separate heat exchanger 53 is connected to the heat storage tank 57, the hot water circulation pump 59 for circulating the hot water in the heat storage tank 57 is installed on the connection pipe.

In addition, the heat storage tank 57 is configured such that a heat exchanger 58 for hot water, which is a copper coil heat exchanger, is built thereon.

On the other hand, the heat collecting medium piping is the pipe connecting the above-described solar collector 50, the separate heat exchanger 53, the open expansion tank 54, the heat medium circulation pump (55).

That is, the solar collector 50 and the separate heat exchanger 53 are connected to the heat medium supply pipe 51, and a safety valve (valve) 52 is installed on the heat medium supply pipe 51, so that the safety valve 52 is expanded when the heat medium is expanded. As the) is opened, the heat medium is discharged to the outside.

In addition, the heat medium circulation pump 55 and the solar collector 50 are connected to the heat medium recovery pipe 56.

Therefore, when the flow of the heat medium is described, the heat medium circulating through the heat collecting medium piping system by the heat medium circulation pump 55 is heated while passing through the solar heat collector 50, and the heated heat medium is 1 of the separate heat exchanger 53. Heat-exchanged with the water in the heat storage tank (57) flowing into the secondary side while flowing to the secondary side to warm the water in the heat storage tank (57), and then discharged to the open expansion tank (54) again by the heat medium circulation pump (55) It is supplied to the collector 50 and heated again.

At this time, the water in the heat storage tank 57 is supplied to the secondary side of the separate type heat exchanger 53 from the heat storage tank 57 by the hot water circulation pump 59 to be heat exchanged, and then recovered and stored in the heat storage tank 57 again.

In addition, the hot water supply system (hot water) system consisting of the auxiliary boiler 60, the first hot water supply pipe 61, the second hot water supply pipe 62 of the solar hot water heater, the heating water circulation pump 70, the first heating water Since the heating system composed of the supply pipe 71, the second heating water supply pipe 72, the heating water return pipe 73, the ball tap 80 and the direct inlet pipe 81 and the like are the same as in the above-described conventional embodiment Duplicate description thereof will be omitted.

On the other hand, the solar hot water heater according to another embodiment made as described above, since the separate heat exchanger 53 for heat-exchanging the heat medium and the water in the heat storage tank 57 is installed separately from the heat storage tank 57, the heat exchange performance is excellent, but separate There was a disadvantage of requiring an installation space.

In addition, the open type heat collecting medium piping system, the hot water supply system, the heating system, etc. having the same structure as the above-described embodiment have the same problems as those of the above-described embodiment.

Accordingly, the present invention has been made to solve the problems of the prior art as described above, the heat-sealing tank of the completely sealed heat collecting medium piping system, the helical double jacket heat exchange method, and the heating return to control the temperature of the water in the heat storage tank The purpose of the present invention is to provide a fully enclosed solar hot water heater with electric triangulation and overheating protection.

The fully enclosed solar hot water heater of the present invention for achieving the above object is a solar hot water heater for hot water supply and heating using solar heat, a solar heat collector for collecting the heat of the heat to heat the heat medium; A heating heat storage tank connected to the heat medium supply pipe completely sealed to the solar heat collector; A hot water storage tank connected in series with the heating heat storage tank and connected to a solar heat collector and a heat-sealed heat recovery tube; A heat medium circulation pump installed on the heat medium recovery pipe to circulate the heat medium; A hermetic expansion tank connected to the heat medium recovery pipe between the heat medium circulation pump and the hot water storage tank to accommodate the pressure rise of the heat medium; An auxiliary boiler connected to the heating heat storage tank and the hot water storage heat storage tank to heat and supply heating water and hot water; A heating water circulation pump for circulating the heating water supplied from the auxiliary boiler to the heating water receiving pipe; It is installed in the heating water return pipe; electric triangular inlet to introduce the heating return to the heat storage tank or auxiliary boiler; characterized in that configured to include.

Preferably, the heat dissipation device is configured between the heat medium supply pipe and the heat medium recovery pipe, the heat dissipation device comprising: a bypass pipe connecting the heat medium supply pipe and the heat medium recovery pipe; A circulation pump installed on the bypass pipe to forcibly circulate the superheated heat medium; It is configured to include; a radiator for radiating the overheated heat medium forcibly circulated by the circulation pump.

The heating heat storage tank and the hot water storage heat storage tank are formed of an inner cylinder and an outer cylinder, and a double jacket structure having a spiral flow path formed of a spiral plate is formed between the inner cylinder and the outer cylinder.

Hereinafter, with reference to the accompanying drawings, preferred embodiments of the present invention in detail as follows.

3 to 7 are views showing a fully sealed solar hot water heater according to the present invention.

Fully enclosed solar hot water heater according to the present invention is largely composed of a heat collecting medium circulation (pipe) system, a hot water supply system, a heating system, a heat dissipation device, and the like, as shown in FIGS. As shown in Fig. 7, it is controlled by a controller configured in a solar hot water heater.

The heat collecting medium circulation system includes: a solar heat collector (100) installed outdoors and collecting solar heat to heat the heat medium; and a heat storage tank (120) connected to the heat medium supply pipe (101) completely sealed to the solar heat collector (100); The hot water storage tank 140 connected in series with the heating heat storage tank 120 and the connection pipe 130 and connected to the heat collector 100 and the heat recovery pipe 102 which is completely sealed, and the heat recovery pipe 102 on the heat storage tank 120. It is installed in the heat medium circulation pump 141 for circulating the heat medium and the heat medium circulation pump (141) between the heat medium circulation pump 141 and the hot water storage heat storage tank (140) is an hermetic expansion tank for receiving the pressure rise of the heat medium 142.

As shown in FIG. 6, the heating heat storage tank 120 and the hot water storage heat storage tank 140 are formed of an inner cylinder and an outer cylinder, and a spiral plate corresponding to a gap between the inner cylinder and the outer cylinder is formed between the inner cylinder and the outer cylinder. It consists of a double jacket structure having a spiral flow path formed from the side to the outlet side.

6, only the heating heat storage tank 120 is illustrated since the heating heat storage tank 120 and the hot water storage heat storage tank 140 have the same structure.

Accordingly, the heat storage medium pipe of the heating heat storage tank 120 and the hot water storage heat storage tank 140 connected to the solar heat collector 100 has a heating medium supply pipe 101 connected to an outer jacket of the heating heat storage tank 120, that is, the outer heat storage tank 120. Heat and heat the heating water in the), the outer jacket of the hot water storage tank 140, the outer cylinder is connected to the connection pipe 130 in series with the outer jacket of the heating heat storage tank 120 is connected to heat the hot water in the hot water storage tank 140. And the outer jacket of the hot water storage tank 140 and the solar collector 100 are connected to the heat medium recovery pipe 102 to supply the heat medium discharged from the outer jacket of the hot water storage tank 140 to the solar collector 100. Done.

On the other hand, the sealed type of the present invention means that the heat collecting medium circulation system from the heat storage tank 120 (140) to the solar collector 100 of the double jacket is sealed. That is, it means that the piping of the circulation system is completely sealed without the conventional safety valve (valve) or air vent, and the like, and absorbs the pressure fluctuations caused by the expansion of the heat medium through the hermetic expansion tank 142. The circulation system can be operated safely.

In addition, although not shown in the drawing, the hermetic expansion tank 142 is provided with a diaphragm inside and filled with nitrogen gas at an appropriate pressure in the upper part of the diaphragm, so that the heat collecting medium increases in temperature during operation of the solar hot water heater. Due to thermal expansion, the nitrogen gas is compressed and the collecting medium expanded into the diaphragm flows in to maintain the pressure of the collecting medium circulation system.On the contrary, when the temperature of the collecting medium decreases, the nitrogen gas expands and the inside of the diaphragm expands. By discharging the collecting medium into the piping system, the pressure of the collecting medium circulation system is maintained stably.

On the other hand, the flow of the heat collecting medium circulation system configured as described above, after the heat medium forcedly circulated by the heat medium circulation pump 141 is recovered and heated by the heat collector 100 through the heat medium recovery pipe 102, the heat medium supply pipe ( 101 is supplied to the outer jacket of the heating heat storage tank 120 through.

The heat medium supplied in this way flows from the upper side to the lower side of the spiral flow path formed by the spiral plate provided between the outer cylinder and the inner cylinder of the heating heat storage tank 120 to directly heat the water in the heating heat storage tank 120 to form hot water.

And, the heat medium discharged from the outer jacket of the heating heat storage tank 120 is supplied to the outer jacket of the hot water storage heat storage tank 140 through the connection pipe 130, while directly heating the water in the hot water storage heat storage tank 140 while being discharged, The heat collector tube 102 is recovered to the solar collector 100 again.

At this time, when the temperature of the heat medium rises and is thermally expanded, the pressure of the heat medium is stably maintained through the hermetic expansion tank 142 connected to the heat medium recovery pipe 102 between the hot water storage heat storage tank 140 and the heat medium circulation pump 141. .

The hot water supply system, the hot water storage tank 140 and the auxiliary boiler 150 is connected to the first hot water supply pipe 143, the second boiler 150 is provided with a second hot water supply pipe 151 for supplying hot water. .

In addition, a direct inlet pipe 161 connected to a cold water supply source is connected to a lower portion of the hot water storage tank 140.

Therefore, as described above, the hot water in the hot water storage tank 140 directly heated by the heat medium is supplied to the auxiliary boiler 150 through the first hot water supply pipe 143, and further heated in the auxiliary boiler 150, and then the second hot water is supplied to the auxiliary boiler 150. Hot water is supplied through the hot water supply pipe 151.

The heating system, the heating heat storage tank 120 and the auxiliary boiler 150 is connected to the first heating water supply pipe 121, the auxiliary boiler 150, the second heating water supply pipe for supplying heating water to the heating place ( 152 is installed.

In addition, a heating water return pipe 153 for returning the heated water is installed in the heating place, and a heating water circulation pump 154 for forcibly circulating the heating return is installed in the heating water return pipe 153.

On the other hand, the heating return pipe 153 is provided with an electric triangular valve (valve) 155 having a "T" shaped flow path, the heating heat storage tank 120 in accordance with the temperature of the heating heat storage tank 120 Or it flows into the auxiliary boiler 150.

Therefore, the hot water in the heating heat storage tank 120 directly heated by the heat medium as described above is supplied to the auxiliary boiler 150 through the first heating water supply pipe 121, and further heated in the auxiliary boiler 150, 2 is supplied to the heating place through the heating water supply pipe 152 to heat.

Subsequently, the heating water that has been heated is returned through the heating water return pipe 153 by the heating water circulation pump 154, and the heating return water returned to the heating water return pipe 153 is heated by the electric triangular valve 155. Inflow to the 120 or the auxiliary boiler 150 is circulated.

That is, when the temperature of the heating heat storage tank 120 is sufficiently high, the electric triangular valve 155 opens the flow path of the heating heat storage tank 120 side while the flow path of the auxiliary boiler 150 is closed, and on the contrary, the heating heat storage tank 120. When the temperature of) is low, the flow path on the side of the heating heat storage tank 120 is closed, and the flow path on the side of the auxiliary boiler 150 is opened to circulate the heating return.

When the heating water is insufficient in the heating system, supplemental water is supplied from the ball tap 160.

The heat dissipation device 110 includes a bypass pipe 111 installed to connect the heat medium supply pipe 101 and the heat medium recovery pipe 102, and a circulation forcibly circulating the heat medium installed in the bypass pipe 111. It comprises a pump 112, and a radiator 113 for radiating the overheated heat medium forcibly circulated by the circulation pump 112.

The radiator 113 is an air-cooled radiator formed in a fin-like form.

Therefore, when the heat medium is overheated, the circulation pump 112 of the heat dissipation device 110 by the controller is operated to bypass the heat medium supplied through the heat medium supply pipe 101 to the bypass pipe 111 to radiate the heat radiation 113. The heat medium supplied to the radiator 113 is radiated while passing through the pipes stacked in the form of fins and circulated back to the solar heat collector 100 through the heat medium recovery pipe 102.

As described above, according to the fully enclosed solar hot water heater of the present invention has the following advantages.

Firstly, the air is not drawn in by completely enclosing the collection media circulation system, which extends the life of the equipment and does not cause circulation obstruction.

Second, by installing a hot water storage tank separately and connecting the heating storage tank with a single path, the circulation system of the heat collecting medium is simplified, and hot water use efficiency is high.

Third, the heating and hot water storage tanks are formed by a double jacket heat storage tank having a spiral flow path, so that there is less concern about scale deposition and requires less installation space.

Fourth, by installing an electric triangular valve in the heating and return pipe, the preheating operation of the heating heat storage tank and the auxiliary boiler in parallel minimizes unnecessary fuel consumption.

Fifth, by installing a heat dissipation device, it is possible to prevent the operation stop and heat medium loss due to overheating of the collector in summer.

Claims (3)

In the solar hot water heater, which supplies hot water and heat using solar heat, A solar collector which collects solar heat and heats the heat medium; A heating heat storage tank connected to the heat medium supply pipe completely sealed to the solar heat collector; A hot water storage tank connected in series with the heating heat storage tank and connected to a solar heat collector and a heat-sealed heat recovery tube; A heat medium circulation pump installed on the heat medium recovery pipe to circulate the heat medium; A hermetic expansion tank connected to the heat medium recovery pipe between the heat medium circulation pump and the hot water storage tank to accommodate the pressure rise of the heat medium; An auxiliary boiler connected to the heating heat storage tank and the hot water storage heat storage tank to heat and supply heating water and hot water; A heating water circulation pump for circulating the heating water supplied from the auxiliary boiler to the heating water receiving pipe; Completely enclosed solar hot water heater, characterized in that it comprises a; electric triangular toilet installed in the heating water return pipe to introduce the heating return to the heat storage tank or auxiliary boiler. The method of claim 1, The heat dissipation device is configured between the heat medium supply pipe and the heat medium recovery pipe, The heat dissipation device includes: a bypass pipe connecting the heat medium supply pipe and the heat medium recovery pipe; A circulation pump installed on the bypass pipe to forcibly circulate the superheated heat medium; Fully enclosed solar hot water heater, characterized in that it comprises a; a heat radiator for dissipating the overheated heat medium forcibly circulated by the circulation pump. The method of claim 2, The heating heat storage tank and the hot water storage heat storage tank is composed of an inner cylinder and an outer cylinder, and between the inner cylinder and the outer cylinder, a fully-sealed solar hot water heater, characterized in that a double jacket structure having a spiral flow path formed of a spiral plate is formed.

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