KR20090111421A - Hot-water supply system using solar heat - Google Patents

Abstract

PURPOSE: A water heating system using solar energy is provided to prevent burst of pipes and a thermal storage tank and secure heat exchange efficiency. CONSTITUTION: A water heating system using solar energy comprises heat collecting inlet and outlet pipes(111,112), a thermal storage tank(130), a circulating pump(150), a control unit(170), and a burst prevention unit(190). The heat collecting inlet and outlet pipes are connected to inlet and outlet sides of a heat collector(110). The thermal storage tank is connected to the other ends of the heat collecting inlet and outlet pipes, and equipped with heating water inlet and outlet pipes(131,312). The circulating pump is installed in the heat collecting inlet pipe to feed the water in the thermal storage tank to the heat collector. The control unit includes a differential temperature controller for controlling the circulating pump. The burst prevention unit is installed with the heat collecting inlet and outlet pipes and opened to drain the water depending on the water temperature.

Description

Hot-water supply system using solar heat

The present invention relates to a hot water system using solar heat, and more particularly, to prevent freezing by a plurality of freezing valves installed on a pipe exposed to the outside even when the outside temperature drops to the freezing temperature. In addition, the present invention relates to a hot water system using solar heat that can be installed at low cost.

As is well known, there has been a recent trend of increasing the technology of generating electricity using solar heat or applying a hot water system as an alternative energy for petroleum resources.

The hot water system using the solar heat is particularly configured to be applied to a house so that hot water (including hot water).

That is, Figure 1 is a view showing a conventional hot water system using a conventional solar heat, as shown, the hot water system 10 using solar heat is stored in the heat storage tank 13 by circulating the heat collector (11) It is a sealed hot water system configured to be stored in and used directly as hot water.

That is, the solar hot water system 10 shown in Figure 1 is installed in the outdoor equipped with the inlet and outlet pipes (11a, 11b) for the collector to absorb the solar heat to heat the water purified by the circulation pump (15). The collector 11 and the collector to be connected to the other end of the drawer pipe 11b for collecting collector 11b connected to one end of the collector 11 so as to store heated hot water and to be circulated by the circulation pump 15. The heat storage tank 13 is connected to the other end of the collector pipe (11a) for one end is connected to the inlet side of the (11), and each end is connected to the heat storage tank 13 so that it is possible to supply heated hot water Hot water inlet and outlet pipes (13a, 13b) and the heat collector outlet pipe (11b) connected to the outlet of the heat collector 11 and the heat collector inlet pipe (11a) connected to the outlet of the heat storage tank (13) The circulation pump by measuring the temperature difference of (15) Control (If the difference between the water temperature of the discharge pipe for collecting heat and the inlet pipe for collecting heat is 3 ℃ or less, the driving of the circulation pump is stopped, the solar heat is collected by the collector to drive the circulation pump when the water temperature difference is more than 10 ℃) And a control unit 17 having a temperature controller (not shown) provided for the control.

However, in the conventional closed solar water system using the conventional solar heat, water remaining in the inlet and outlet pipes for the collector of the collector exposed to the outdoors due to the stop of the operation of the hot water system at night as shown in the winter is shown. There was a problem of freezing.

In consideration of this, in the non-driving hot water system, a heat storage tank open hot water system is proposed to prevent freezing due to the recovery of water circulated in the collector and the inlet and outlet pipes for the collector. Corrosion due to the opening of the pipe was also a problem such as inflow of foreign matters.

In addition, Figure 2 is a view showing a hot water system 20 using another conventional solar heat, the heat medium (antifreeze) circulating through the heat collector 21, as shown is turned on through the heat exchanger (23) The water is configured to be heatable.

That is, the conventional hot water system using another solar heat is installed in the outdoor having the inlet and outlet pipes 21a and 21b for the collector to heat the water circulated by the circulation pump 25 to absorb the solar heat. And a heat exchanger (23) provided to condense the heat collector (21) and the collector pipe and the discharge pipe (21a, 21b) provided therein to perform heat exchange therein, and for heat storage inside the heat exchanger (23). Each end of the inlet pipe 27a and the heat storage draw-out pipe 27b communicate with the inner side, and the heat exchanger may be circulated through the heat storage pump 27c installed in the middle of the heat storage draw-out pipe 27b. The heat exchange is performed at 23 and the heat storage tank 27 is provided to supply heat exchanged hot water through the hot water inlet pipe and the withdrawal pipes 27d and 27e.

However, the conventional hot water system using another solar heat configured as described above does not directly exchange heat with hot water in the heat storage tank as shown in FIG. 2, but heat is exchanged with hot water through a heat exchanger installed separately as described above. There was a problem of poor efficiency of the system.

In addition, since the circulation pump for circulating the heat medium with the installation of the heat exchanger and the heat storage pump provided for circulating the hot water heat exchanged through the heat exchanger should be provided, respectively, the factors that increase the overall installation cost of the hot water system. It became.

Therefore, the present invention has been made to solve the above-mentioned problems, by equipping the conduit pipe to connect the collector and the heat storage tank in the conduit pipe to configure the sealed type capable of automatically draining the hot water filled in the collector and pipe during winter non-driven In addition, the purpose of the present invention is to provide a hot water system using solar heat, which can prevent freezing of pipes and heat storage tanks of hot water systems, as well as prevent corrosion of pipes and inflow of foreign substances.

In addition, another object of the present invention for solving the above problems is to provide a freeze-proof valve in the pipe conduit for connecting the collector and the heat storage tank to configure the sealed type capable of automatically draining the hot water filled in the collector and the pipe during the winter non-driven In order to prevent the heat exchange efficiency from dropping, there is no need for a separate heat exchanger, and furthermore, it is to provide a hot water system using solar heat to reduce the installation cost.

The present invention for achieving the above object, in the hot water system having a conventional heat collector for collecting the solar heat so as to prevent freezing due to winter freezing, each end is provided connected to the inlet side and the discharge side of the collector A heat storage tank which is connected to the other end of the heat collecting inlet pipe and the discharge pipe, and the hot water inlet pipe and the discharge pipe for inflow and outflow of the hot water are connected to each other; Comparing and measuring the temperature of the circulating pump installed in the middle of the heat inlet pipe and provided to discharge the water stored in the heat storage tank to the collector side, the heat collecting discharge pipe side connected to the outlet of the heat collector and the heat collecting inlet pipe connected to the outlet of the heat storage tank And a control unit having a temperature controller to control the circulation pump, the inlet pipe for collecting heat, and When the water charged in the collector and the heat collecting inlet pipe and the discharge pipe is freezing temperature by a temperature sensor installed in the middle of the discharge pipe, the freezing and closing is provided to drain the charged water by opening and closing corresponding to the detected temperature value. Characterized in that it comprises a prevention means.

Here, the freeze protection means, the first freeze-proof drain pipe, one end is connected to the middle of the heat collecting discharge pipe, and the second end is connected to the first freeze wave prevention drain pipe, one end is connected to the middle of the heat collecting lead pipe. It is made of a freeze-proof first valve and a freeze-proof second valve which is installed in the prevention drain pipe, the first freeze-proof drain pipe and the second freeze-proof drain pipe so that the opening degree is adjustable to correspond to the outside temperature. It is done.

In addition, another object of the present invention for achieving the above object is, in the hot water system having a conventional heat collector filled with a heat medium to collect solar heat, each end is provided connected to the inlet side and the discharge side of the collector A heat storage tank connected to the other end of the heat collecting inlet pipe and the discharge pipe and the other ends of the heat collecting inlet pipe and the discharge pipe and conduited to the inside of the hot water inlet pipe and the discharge pipe; This connected and the other end is provided with a freeze-proof drain pipe piped to be connected to the heavy water tank provided indoors, and a range of the opening degree is adjustable to correspond to the outside air temperature by the temperature sensor built in the middle of the freeze-proof drain pipe for hot water For freeze protection provided to discharge the water filled in the discharge pipe to the heavy water tank side It characterized by consisting of bromo.

According to the hot water system using the solar heat according to the present invention as described above, by equipping the conduit pipe to connect the collector and the heat storage tank in the conduit pipe by configuring the sealed type capable of automatically draining the hot water filled in the collector and pipe during the winter non-driven In addition, it is possible to prevent freezing of pipes and heat storage tanks of hot water systems, as well as to prevent corrosion of pipes and inflow of foreign substances.

In addition, according to the hot water system using solar heat according to the present invention, by equipping the conduit pipe to connect the collector and the heat storage tank in the conduit pipe by configuring the sealed type capable of automatically draining the hot water filled in the collector and pipe during the winter non-driven, Since no heat exchanger is required, the heat exchange efficiency can be prevented from falling, and furthermore, the installation cost can be reduced.

Hereinafter, an embodiment of a hot water system using solar heat according to the present invention will be described in detail.

First, it should be noted that in the drawings, the same components or parts denote the same reference numerals as much as possible. In describing the present invention, detailed descriptions of related well-known functions or configurations are omitted in order not to obscure the subject matter of the present invention.

3 is a view showing the configuration of a hot water system using solar heat according to the present invention.

As shown, the hot water system 100 using the solar heat according to the present invention is configured to be able to prevent the freezing of the pipe and the collector due to the freezing of the winter while having a sealed structure.

That is, the hot water system 100 having a conventional heat collector capable of collecting solar heat includes a heat collecting inlet pipe and an outlet pipe 111 and 112 provided at one end thereof connected to an inlet side and an outlet side of the collector 110. A heat storage tank 130 connected to the other end of the heat inlet pipe and the discharge pipe 111 and 112 and connected to the hot water inlet pipe and the discharge pipe 131 and 132 for inflow and outflow of hot water, and the heat inlet A circulation pump 150 installed in the middle of the pipe 111 and provided to discharge the water stored in the heat storage tank 130 to the collector 110 side, and a discharge pipe 112 side for the heat collector connected to the outlet of the collector 110; Control the circulation pump 150 by measuring the temperature of the heat collecting inlet pipe 111 connected to the outlet of the heat storage tank 130 (if the temperature difference between the water discharge pipe side and the heat collecting inlet pipe is less than 3 ℃) Stop the circulating pump And a control unit 170 having a temperature controller not shown, which is provided to collect the solar heat by the collector and drive the circulating pump when the temperature difference of water is greater than 10 ° C.). When the water filled in the collector 110 and the heat collecting inlet and discharge pipes 111 and 112 is freezing temperature by a temperature sensor (not shown) installed in the middle of the 111 and 112, the water is opened and closed to correspond to the detected temperature value. It comprises a freeze protection means 190 is provided to drain the filled water.

Here, the freeze protection means 190, as shown in Figure 3, the first freeze prevention drain pipe 191, one end of which is connected to the middle of the heat discharge pipe 112 and the heat collecting inlet pipe 111 On the way, one end is connected and the other end is connected to the first freeze-proof drain pipe 191, the second freeze-proof drain pipe 192, the first freeze-proof drain pipe 191 and the second freeze-proof drain pipe 192 ) Is composed of a freezing prevention first valve 193 and a freezing prevention second valve 194 which are respectively installed to be adjustable in a range of opening degree corresponding to the outside air temperature.

In addition, the other end of the first freeze protection drain pipe 192 is provided with a water tank 195 indoors to store and use the drained water.

Meanwhile, as described above, the hot water system 100 using solar heat according to the present invention circulates the water supplied to the heat storage tank 130 to the collector 110 through a circulation pump 150 and heats it with hot water to use it as hot water. In the hot water system 100 to be provided with a freezing prevention means 190 for preventing freezing due to the freezing of the winter during the intake pipe and discharge pipe (111,112) for collecting heat, the collector 110 and its collector 110 in winter Although it is configured to prevent the freezing of the heat collecting inlet pipe and the discharge pipe (111,112) connected to the inlet and outlet of the water), as shown in Figure 4 the water is heated by the heat medium circulating the collector 210 and the heat storage tank 230 In order to prevent the freezing of the winter pipe during the hot water discharge pipe 232 of the hot water system 200 configured to be used as hot water may be installed by installing a freeze protection valve 290.

That is, another hot water system 200 using the solar heat according to the present invention having a conventional collector 210 filled with a heat medium (antifreeze) to collect the heat of the sun, as shown in Figure 4, the collector 210 The inlet and outlet pipes for collecting heat and exhaust pipes 211 and 212, one end of which is connected to the inlet side and the discharge side of the outlet, and the other ends of the heat collecting inlet and discharge pipes 211 and 212 are connected to each other, and the inlet pipe for hot water and Heat storage tank 230 is provided to be heat-exchangeable by conduit the discharge pipe (231,232) inside, and one end is connected to the middle of the hot water discharge pipe 232 and the other end is connected to the heavy water tank 250 provided indoors for freezing prevention A range of the opening degree is adjustable to correspond to the outside air temperature by a temperature sensor (not shown) installed in the middle of the drain pipe 270 and the freeze-proof drain pipe 270. 232 is made of a freeze prevention valve 290 is provided to be discharged to the water tank 250 side.

The driving of the hot water system using the solar according to the present invention made as described above is to collect the solar heat in the collector 110 in a state where the hot water system is stopped as shown in FIG. The freeze protection first valve 193 and the freeze protection second valve 194 installed in the middle of the drain pipe 191 and the second freeze prevention drain pipe 192 are closed.

In addition, the water temperature is further increased by the continuous collection of the heat collector 110, the temperature of the water and the heat storage tank 150 of the heat collector discharge pipe 112 connected to the outlet side of the heat collector 110 measured by the temperature controller of the control unit 170 When the temperature difference of the water of the collector inlet pipe 111 connected to the inlet side of the collector 110 via 10) becomes 10 ° C, the controller 170 drives the circulation pump 150.

One end is connected to the inlet side and the outlet side of the collector 110 by the driving of the circulation pump 150, and the other end is circulated through the inlet pipe and the discharge pipe 111 and 112 connected to the heat storage tank 130. The water stored in 130 is heated.

The heated hot water is discharged and supplied through the discharge pipe 132 for hot water, one end of which is connected to the heat storage tank 130.

During use as described above, the night of the collector is connected to the inlet side of the collector 110 via the heat storage tank 150 and the temperature of the water of the discharge pipe 112 for the collector connected to the outlet side of the collector 110. When the temperature difference between the water in the pipe 111 reaches 3 ° C., the control unit controls to stop the circulation pump 130.

Subsequently, when the temperature of the water is continuously lowered to 0 ° C., the first freeze protection first valve installed and opened in the middle of the first freeze protection drain pipe 191 and the second freeze protection drain pipe 192 of the freeze protection means 190 ( 193 and the freezing second valve 194 are opened at a predetermined angle.

The collector 110, the collector inlet pipe 111 connected to the inlet and the outlet of the collector 110 and the collector discharge pipe are opened by opening the first valve 193 and the second valve 194 for preventing freezing. Water filled in the 112 is drained to the water tank 195 provided in the room through the first freeze protection drain pipe 191 and the second freeze protection drain pipe 192.

As described above, when the temperature of the water drops further below 0 ° C. during the drainage, the freeze-proof first valve 193 and the freeze-resistant second valve 194 are completely opened, thereby rapidly collecting the heat collector 110, The water filled in the collector input pipe 111 and the collector discharge pipe 112 connected to the inlet and the outlet of the collector 110 are connected to the first freeze protection drain pipe 191 and the second freeze protection drain pipe 192. It is drained to the water tank 195 side provided in the room through.

Accordingly, the water filled in the collector 110, the collector inlet pipe 111 and the collector outlet pipe 112 connected to the inlet and the outlet of the collector 110 will not freeze, so that the collector and the collector drawer It is possible to prevent the freezing of the pipe 111 and the discharge pipe 112 for the collector.

In addition, the operation of the hot water system using another solar heat according to the present invention shown in Figure 4, when the water temperature of the water for supplying the hot water is 0 ℃ or more, the freeze protection valve installed in the middle of the freeze protection drain pipe 270 ( 290 is closed, the heat medium is heated by the heat collected by the heat collector 210 and the water flowing through the hot water inlet pipe 231 in the heat storage tank 230 by the heat of the heat medium is heat-exchanged and heated It is supplied with.

When the water temperature of the hot water supply water becomes 0 ° C. during use as described above, the freezing prevention valve 290 is opened at a predetermined angle.

Since the water filled in the hot water inlet pipe and the discharge pipes 231 and 232 exposed to the outside by the opening of the freeze protection valve 290 is drained to the heavy water tank 250 provided in the room through the freeze protection drain pipe 270. Freezing can be prevented beforehand.

The present invention described above is not limited to the above-described embodiment and the accompanying drawings, and various substitutions, modifications, and changes are possible within the scope without departing from the technical spirit of the present invention. It will be evident to those who have knowledge of.

1 is a block diagram showing an embodiment of a hot water system using a conventional general solar heat

Figure 2 is a block diagram showing another embodiment of a hot water system using a conventional general solar heat

Figure 3 is a block diagram showing an embodiment of a hot water system using solar heat according to the present invention

Figure 4 is a block diagram showing another embodiment of the hot water system using solar according to the present invention

* Description of the symbols for the main parts of the drawings *

100,200; Hot water system

110,210; Collector

130,230; Heat storage tank

150; Circulation pump

170; Control

190; Freezing prevention means

195,150; Water tank

Claims (4)

In a hot water system having a conventional collector that collects solar heat to prevent freezing due to winter freezing, A collecting pipe and a discharge pipe for collecting and discharging pipes having one end connected to the inlet and the discharge side of the collector 110; A heat storage tank 130 connected to the other end of the heat collecting inlet pipe and the discharge pipe 111 and 112 and connected to the hot water inlet pipe and the discharge pipe 131 and 132 for inflow and outflow of hot water; A circulation pump 150 installed in the middle of the heat collecting inlet pipe 111 and provided to discharge water stored in the heat storage tank 130 to the heat collector 110; To control the circulation pump 150 by measuring the temperature of the heat collecting outlet pipe 112 connected to the outlet of the heat collector 110 and the heat collecting inlet pipe 111 connected to the outlet of the heat storage tank 130. A control unit 170 having a temperature control controller provided for the control unit; When the water filled in the heat collector 110 and the heat collecting inlet pipe and the discharge pipe 111 and 112 by the temperature sensor installed in the middle of the heat collecting inlet pipe and the discharge pipe 111 and 112 reaches a freezing temperature, A freeze protection means 190 correspondingly opened and closed to drain the charged water; Hot water system using solar heat, characterized in that consisting of. The method of claim 1, The freeze protection means 190, the first freeze-proof drain pipe 191, one end of which is connected to the middle of the discharge pipe 112 for collecting heat, and one end is connected to the middle of the intake pipe 111 for collecting heat and the other end is the first end. Range of the opening degree corresponding to the outside air temperature in the second freeze protection drain pipe 192 and the first freeze protection drain pipe 191 and the second freeze protection drain pipe 192 connected to the freeze protection drain pipe 191. The hot water system using solar heat, characterized in that consisting of the first valve for preventing the freezing and the first valve (193) and the second valve for preventing freezing (194) is installed to be adjustable. The method according to claim 1 or 2, The other end of the first freeze protection drain pipe (192) is a hot water system using solar heat, characterized in that the indoor water tank (195) is further provided to store and use the drained water. In the hot water system 200 having a conventional collector 210 filled with a heat medium to collect solar heat, Collecting inlet pipes and discharge pipes 211 and 212 each having one end connected to an inlet side and an outlet side of the collector 210; A heat storage tank 230 connected to the other ends of the heat collecting inlet pipe and the discharge pipe 211 and 212 and configured to conduct heat exchange by conduiting the hot water inlet pipe and the discharge pipe 231 and 232 into the inside; One end is connected in the middle of the hot water discharge pipe 232 and the other end is freeze-proof drain pipe 270 that is connected to the heavy water tank 250 is provided indoors; The opening degree is adjustable so as to correspond to the outside temperature by the temperature sensor built in the middle of the freeze prevention drain pipe 270 to discharge the water filled in the hot water discharge pipe 232 to the heavy water tank 250 side. To freeze prevention valve 290 is provided to; Hot water system using solar heat, characterized in that made.

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