KR101073785B1 - Cold and hot water supplying system - Google Patents

Abstract

The present invention relates to a cold / hot water supply system for providing hot water and cold water to a plurality of generations by using an external facility of a district heating facility or a central heating facility, comprising: a granular cold water supply pipe for supplying cold water introduced from the outside through a main cold water supply pipe; A central heat exchanger for heating cold water introduced from the outside through a water supply pipe to a high temperature water by using a heat medium introduced from the external equipment, and a granular hot water supply pipe supplied with hot water from the central heat exchanger through a main hot water supply pipe; An integrated heat exchanger installed in the granular hot water supply pipe so as to correspond to each generation, and supplied with hot water branched through the first high temperature hot water supply pipe branched from the granular hot water supply pipe, and installed in each generation, and branched from the integrated heat exchanger. The hot water branched through the second hot water supply pipe and the mouth Each generation unit uses a mixed water control valve which discharges the mixed water using cold water branched from the cold water supply pipe through the first cold water supply pipe, and a mixed water which is connected to an outlet of the mixed water control valve and flows out of the mixed water control valve. A mixed water pipe to be supplied to a required portion, a circulating water pipe communicating with the mixed water pipe and circulating residual water of the mixed water pipe, residual water of the circulating water pipe is introduced, and supplying the introduced residual water to the integrated heat exchanger. A circulating water pump, a residual water temperature sensor for sensing a temperature of the circulating residual water, and a start operation mode in which the circulating water pump is stopped in a normal operation mode, and the use request information of the mixed water is received from a user. The circulating water pump until the temperature of the residual water detected from the residual water temperature sensor satisfies a set temperature range. To, and then heating the residue at the inside of the integral heat exchanger provides a hot water supply system including the control unit for introducing a high-temperature water in the mixing valve can be controlled.
Therefore, since the residual water of the circulating water pipe is heated and used in an integrated heat exchanger in a state where hot water is not introduced from the outside, the residual water can be reused without discarding it. This reduces water waste, improves user convenience and simplifies the configuration of the overall system.

Description

Cold and hot water supplying system

The present invention relates to a cold and hot water supply system, and more particularly to a cold and hot water supply system that is circulated and reused without discarding the residual water in the circulation water pipe.

In general, cold and hot water supply systems that supply cold water and hot water to district heating facilities, centrally heated apartments, officetels, hotels, residential houses, etc. are installed with main cold water supply pipes and main hot water supply pipes directly supplied to each customer. It is a system that is supplied to the cold / hot water integrated mixing faucet installed in the kitchen, bathroom, etc., the cold and hot water is mixed by the operation of the faucet handle is discharged through the water discharge port of the cold / hot water integrated mixing faucet.

Referring to FIG. 1, in the conventional system, cold water and hot water are supplied from the cold water supply pipe 1 and the hot water supply pipe 3 from the granular cold water supply pipe 1 and the granular hot water supply pipe 3 through the generation cold water meter 2 and the generation hot water meter 4. Is supplied. The unused hot water of the hot water supplied to the granular hot water supply pipe 3 is recovered to the central heat exchanger (not shown) through the granular hot water pipe 5. At each required destination 8, the user operates the faucet handle or the manual control valve manually to manipulate the temperature of the mixed water discharged from the faucet.

In such a system, it is inconvenient to set an appropriate temperature because the temperature of the discharged water is different according to the user. In other words, when the faucet handle is opened, hot water of high temperature in the hot water pipe and cold cold water of the cold water supply pipe are mixed and discharged, and thus, when cold water is used in the integrated cold / hot water integrated mixing faucet of the other side in the shower and washing face, As the temperature suddenly becomes hot, hot hot water is supplied, which causes burns and thermal discomfort, which is inconvenient to readjust the faucet handle in order to adjust the proper temperature. In particular, in order to discharge hot water having a temperature corresponding to the user's desire, the cold water stagnant in the pipe should be used after draining, so there is a problem in that water waste due to discarding the cold residual water in the pipe to the sewer without need.

In addition, when using the integrated cold / hot water integrated mixer of one side in the household and using the integrated cold / hot water integrated mixer of the other side in the household, the temperature of the water is changed, and the handle of the integrated cold / hot water integrated mixer is used to adjust the temperature again. The manual control valve has to be operated again, resulting in a lot of waste of water, and the waste water is collected through sewage pipes to the sewage treatment plant, purified, and discharged to the river, resulting in a large amount of financial loss due to national energy resources and human resources. There was a problem.

It is an object of the present invention to provide a cold / hot water supply system for circulating and reusing a residual water in a mixed water pipe.

The present invention relates to a cold / hot water supply system for providing hot water and cold water to a plurality of generations by using an external facility of a district heating facility or a central heating facility, comprising: a granular cold water supply pipe for supplying cold water introduced from the outside through a main cold water supply pipe; A central heat exchanger for heating cold water introduced from the outside through a water supply pipe to a high temperature water by using a heat medium introduced from the external equipment, and a granular hot water supply pipe supplied with hot water from the central heat exchanger through a main hot water supply pipe; An integrated heat exchanger installed in the granular hot water supply pipe so as to correspond to each generation, and supplied with hot water branched through the first high temperature hot water supply pipe branched from the granular hot water supply pipe, and installed in each generation, and branched from the integrated heat exchanger. The hot water branched through the second hot water supply pipe and the mouth Each generation unit uses a mixed water control valve which discharges the mixed water using cold water branched from the cold water supply pipe through the first cold water supply pipe, and a mixed water which is connected to an outlet of the mixed water control valve and flows out of the mixed water control valve. A mixed water pipe to be supplied to a required portion, a circulating water pipe communicating with the mixed water pipe and circulating residual water of the mixed water pipe, residual water of the circulating water pipe is introduced, and supplying the introduced residual water to the integrated heat exchanger. A circulating water pump, a residual water temperature sensor for sensing a temperature of the circulating residual water, and a start operation mode in which the circulating water pump is stopped in a normal operation mode, and the use request information of the mixed water is received from a user. The circulating water pump until the temperature of the residual water detected from the residual water temperature sensor satisfies a set temperature range. And, after heating the said remaining within the integrated heat exchanger to provide cold or hot water supply system including a controller for introducing a high-temperature water in the mixing valve can be controlled.

According to another aspect of the present invention, the present invention provides a cold and hot water supply system for providing hot water and cold water to a plurality of generations by using an external facility of a district heating facility or a central heating facility, the cold water flowing from the outside through the main cold water supply pipe A central heat exchanger for heating cold water introduced from the outside through a water supply pipe to a high temperature water by using a granular cold water supply pipe for supplying a heat source and a heat medium introduced from the external equipment, and a high temperature through the main hot water supply pipe from the central heat exchanger. A granular hot water supply pipe to which water is supplied, a granular heating water supply pipe to which hot water is supplied from the central heat exchanger through a main hot water supply pipe, and installed to correspond to each generation and installed with the granular heating water supply pipe, and branched from the granular hot water supply pipe. Hot water branched through the first hot water supply pipe Mixed water using an integrated heat exchanger supplied to each generation and hot water branched through a second high temperature water supply pipe branched from the integrated heat exchanger and cold water branched from the granular cold water supply pipe through a first cold water supply pipe. A mixed water control valve which flows out of the mixed water control valve, a mixed water pipe which is connected to an outlet of the mixed water control valve, and supplies mixed water flowing out of the mixed water control valve to a required destination of each generation, and branches from the granular heating water supply pipe. A heating water supply pipe communicating with a heating water supply pipe for supplying heating water to a heating water source of each generation, and an integrated heat exchanger connected to the heating water supply pipe, and circulating the residual water in the heating water supply pipe to circulate the integrated water heat exchanger. And a circulating water pipe communicating with the mixed water pipe and circulating residual water of the mixed water pipe, and the remainder of the circulating water pipe. Water flows in, the circulating water pump for supplying the introduced residual water to the integrated heat exchanger, the residual water temperature sensor for detecting the temperature of the circulated residual water and the operation of the circulating water pump in the normal operation mode, In the start operation mode in which the use request information of the mixed water is received from a user, the circulating water pump is operated until the temperature of the residual water detected from the residual water temperature sensor satisfies a set temperature range. It provides a cold and hot water supply system including a control unit for heating in the integrated heat exchanger and then introduced as hot water to the mixed water control valve.

Cold and hot water supply system according to the present invention has the following effects.

First, it is possible to reduce waste of water by circulating and reusing the integrated heat exchanger without discarding the residual water of the circulating water pipe due to the use of mixed water in the household.

Second, the alarm device notifies the requesting user when the mixed water in the circulating water pipe reaches the set range temperature when the residual water in the circulating water pipe is circulated to the integrated heat exchanger by using the mixed water in the household at the request of the user. It is provided to improve the convenience of the user.

Third, when the flow does not occur in the mixed water pipe or the circulation water pipe, it is possible to reduce the maintenance cost by shutting off the power of the system in whole or in part.

Fourth, although the remaining water in the circulating water pipe can be reused, the entire system is simple and can be easily applied to a general facility.

1 is a view schematically showing the configuration of a conventional cold and hot water supply system.
2 is a configuration of the cold and hot water supply system according to an embodiment of the present invention.
3 is a view showing a connection relationship between the main control unit and the mixed water control valve shown in FIG.
4 is a schematic plan view of the sub-control unit shown in FIG. 2.
FIG. 5 is a block diagram illustrating a control flow of a controller of the cold / hot water supply system illustrated in FIG. 2.
6 is a configuration diagram illustrating a connection relationship illustrated in FIG. 3.
FIG. 7 is a diagram illustrating an internal configuration of the heat exchanger illustrated in FIG. 2.
8 is a schematic diagram of a cold / hot water supply system according to another embodiment of the present invention.

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

2 to 7, the cold and hot water supply system according to an embodiment of the present invention, the granular cold water supply pipe 10, the central heat exchanger 20, the granular hot water supply pipe 30, the integral heat exchanger ( 40, a mixed water control valve 50, a mixed water pipe 60, a circulating water pipe 70, a circulating water pump 80, a residual water temperature sensor 72, and a controller 90. .

The granular cold water supply pipe (10) receives cold cold water through the main cold water supply pipe (12) from an external water supply pressurizing pipe, and through each of the first cold water supply pipe (14) branched from the granular cold water supply pipe (10) Cold water is supplied to the faucet and mixed water control valve 50.

The central heat exchanger 20 serves to change the cold water introduced from the outside through the water supply pipe 21 to the high temperature water by using the heat medium introduced from the external equipment.

The heat medium is introduced into the central heat exchanger 20 through the heat medium supply pipe 22, and after heat exchange with cold water introduced from the outside through the water supply pipe 21 in the central heat exchanger 20, the heat medium return pipe It is returned to the external equipment through 23.

The central heat exchanger 20 is provided with a main hot water supply pipe 32 communicating with the granular hot water supply pipe 30, and using the heat medium introduced from an external facility through the heat medium supply pipe 22, the water supply pipe 21. The hot water generated by heating the cold cold water flowing from the water supply pressurization pipe through the main hot water supply pipe 32 is supplied to the granular hot water supply pipe 30 for supplying hot water to each floor generation.

A pressure reducing valve 33 is provided on the main hot water supply pipe 32. The pressure reducing valve 33 maintains a constant pressure in a pipe of the granular hot water supply pipe 30 communicating with the main hot water supply pipe 32. Play a role.

Cold cold water flowing from the water supply pressurizing pipe passes through the hot water feed water tank 25 before being supplied to the central heat exchanger 20, and the cold water passing through the hot water feed water tank 25 is an expansion tank feed water pump. It is introduced into the central heat exchanger 20 by the (26).

Cold water passing through the expansion tank replenishment water pump 26 is a common granular hot water pipe (not shown) for circulating to the central heat exchanger 20 without using the hot water of the granular hot water pipe 30 in each generation. After joining the communicating main hot water pipe (not shown), it is supplied to the central heat exchanger 20, the expansion tank feed water pump 26 is in communication with the hermetic expansion tank (27).

The hermetic expansion tank 27 blocks air contact and fills the appropriate pressure to receive and reduce the expansion water in a fluid manner, thereby branching the first water supply pipe branched from the water supply pipe 21 and the water supply pipe 21. Prevent corrosion of (27-1) and operate smoothly.

A water level control valve 24 is provided on the water supply pipe 21 for supplying cold water to the hot water supply water tank 25. The water level control valve 24 automatically opens and closes the water supply pipe 21 to supply the hot water. It serves to adjust the water level of the water tank (25).

The expansion valve replenishment water pump 26 is composed of two, generally only one is operated, but the other is provided in case the expansion tank replenishment water pump 26 used is broken.

The granular hot water supply pipe 30 is installed for each line to supply hot water to each floor generation, and the granular hot water supply pipe 30 communicates with the rooftop main hot water pipe (not shown) at the end of the final layer.

The rooftop main hot water pipe (not shown) is connected to a plurality of granular hot water supply pipes (30) for supplying hot water to each household, and then communicated with and joined to one common standing hot water pipe (not shown), and the main hot water pipe. Returning the water circulating sequentially (not shown) is sent to the central heat exchanger 20 by a circulation water pressure pump (not shown) and reheated. The main hot water pipe (not shown) is connected to the pipe in communication with the chemical feeder 28 to inject the chemical to disinfect the cold water supplied to each generation.

The integrated heat exchanger 40 is integrally installed to have a double pipe structure in the granular hot water supply pipe (30). The interior of the integrated heat exchanger (40) is filled with hot water introduced from the granular hot water supply pipe (30), and the shell 41, which is the body of the integrated heat exchanger (40), has a high temperature of the granular hot water supply pipe (30). The first inlet 42 through which water is introduced, the outlet 43 through which the hot water introduced from the granular hot water supply pipe 30 flows out, and the second inlet through which residual water passed through the mixed water control valve 50 to be described later ( 44) is formed.

A plurality of baffles 45 are installed inside the shell 41. The plurality of baffles 45 are arranged along the height direction of the shell 41, the first baffle 46 and the first high temperature water supply pipe through which the granular hot water supply pipe 30 passes. A plurality of second through holes 47 through which the hot water introduced through the 34 passes is formed.

The outlet 43 is formed on the upper portion of the first inlet 42, the second inlet 44 is preferably formed in the lower portion of the first inlet (42). Residual water flowing into the second inlet 44 formed at the lower portion of the outlet 43 moves from the lower portion to the upper portion, and heat-exchanges with the granular hot water supply pipe 30 and then the mixed water control valve 50 through the outlet 43. Is supplied. The integrated heat exchanger 40 is welded to the granular hot water supply pipe 30 or installed using a flange.

On the first high temperature water supply pipe 34 branched from the granular hot water supply pipe 30, the pressure is adjusted to reduce the pressure before the inlet generation piping pressure of the hot water flowing into the integrated heat exchanger 40, and then check the flow rate. The first flow meter 34-1 is provided.

The high temperature water branched through the first high temperature water supply pipe 34 branched from the granular hot water supply pipe 30 is adjusted to depressurize pressure in accordance with the generation piping pressure in the pressure reducing valve, and then passes through the first flowmeter 34-1. The inlet 42 is introduced into the integrated heat exchanger 40, and the introduced high temperature water passes through the outlet 43 of the integrated heat exchanger 40 to the mixed water control valves 50a and 50b of each generation. Supplied.

The mixed water control valves 50a and 50b are installed in each generation, and the hot water and the granular cold water branched through the second high temperature water supply pipe 36 through the outlet 43 of the integrated heat exchanger 40. The mixed water generated by mixing the cold water branched from the supply pipe 10 through the first cold water supply pipe 14 is supplied to the cold / hot water mixing faucet of each household unit 110 through the mixed water pipes 60a and 60b. .

The mixed water control valve (50a, 50b) is composed of two to supply the mixed water of the set temperature range to the A zone and B zone, respectively, the number of the zone is not limited to this, there is one or three or more This may exist.

The mixed water pipe (60a, 60b) has a first flow rate sensor (64a, 64b) for detecting the flow of the mixed water in the mixed water pipe (60a, 60b) and the mixed water temperature sensor (62a) for measuring the temperature of the mixed water; 62b), the first flow rate sensor (64a, 64b) serves to block the power of the controller 90 partially or entirely if the flow of the mixed water in the mixed water pipe (60a, 60b) is not detected. .

The mixed water temperature sensors 62a and 62b measure hot water and cold water introduced into the mixed water control valves 50a and 50b to measure a temperature of the mixed water in the mixed water pipes 60a and 60b to satisfy a set temperature range. It automatically adjusts the inflow of.

The mixed water pipes 60a and 60b communicate with the circulating water pipe 70, and the circulating water pipe 70 supplies the remaining water remaining in the mixed water pipes 60a and 60b to the circulating water pump 80. The circulating water pipe 70 is provided with a residual water temperature sensor 72, a check valve 76, and a second flow rate sensor 74.

The check valve 76 sets the temperature to be used by the user in each zone in the sub-control unit 94 and presses the circulating water pump start switch 97 of the circulating water pump 80 to control the respective mixed water control valves 60a, In 60b), mixed water having a different set temperature is supplied to zones A and B, respectively. Zone A and B zone mixed water pipes 60a and 60b communicate with each other through one circulation water pipe 70 so that the cold residual water in the pipe circulates through the circulation water pump 80 to reheat the residual water and set the mixed water at different temperatures. When this is completed, the circulating water pump 80 is stopped, and at this time, the mixing temperature of the zone A and B of the mixed water pipes 60a and 60b communicated with each other in one circulating water pipe 70 is mixed at different temperatures. When water is used, the mixed water of different temperature flows to the lower pressure side according to the pressure change in the pipe, so that the mixed water of different temperature is prevented from flowing back to prevent the user from supplying the mixed water of different temperature. .

The residual water temperature sensor 72 measures the temperature of the residual water flowing into the circulating water pump 80, and the second flow rate sensor 74 detects the flow of cold water in the first cold water supply pipe 14. Play a role.

The residual water temperature sensor 72 measures the temperature of the residual water circulating and informs the user by using the alarm device 98 provided in the controller 90 when the temperature of the residual water reaches a set temperature range. When the set temperature range is satisfied, the circulation is stopped by stopping the circulation water pump 80 and the integrated heat exchanger 40.

The second flow rate sensor 74 detects the flow of cold water in the first cold water supply pipe 14, transfers the residual water, reheats it, and forms mixed water having a temperature set by the user in the mixed water control valve 50. If one side accidentally opens the cold water in the faucet, the power of the circulating water pump 80 is cut off so that the air is sucked into the open faucet at the rear end of the circulating water pump 80 to prevent the flow collision in the pipe. It serves to cut off the power of the pump (80).

The circulating water pump 80 is provided on the circulating water pipe 70 in the case 52 of the mixed water control valves 50a and 50b, and the circulating water pump 90 is stopped in the normal operation mode. And, it operates only in the startup operation mode in which the mixed water use request information is received from the user, and supplies the residual water in the mixed water pipes 70a and 70b to the integrated heat exchanger 40.

An electric valve 100 is installed on a pipe for supplying residual water from the circulation water pump 80 to the integrated heat exchanger 40. The electric valve 100 is closed in a normal operation mode, and a start operation mode. At the time of opening, the residual water pumped from the circulating water pump 80 is supplied to the integrated heat exchanger 40.

The control unit 90 includes a main control unit 92 and a sub control unit 94. The main control unit 92 is provided together with the mixed water control valve 50, and the sub control unit 94 has a respective control unit. It is provided in the zone.

The sub controller 94 operates when the user needs to use the mixed water to switch the normal operation mode to the start operation mode, and the residual water of the mixed water pipes 60a and 60b is converted into the circulation water pipe 70. And the circulating water pump 80 are supplied to the integrated heat exchanger 40.

The main control unit 92 receives the user's mixed water use request from the sub control unit 94 and operates the circulating water pump 80 when the temperature of the residual water satisfies a set temperature range in the start operation mode. Stop, and switch the start operation mode to the normal operation mode.

The sub control unit 94 is provided with a display unit 95 and the mixed water temperature control switch 96, the display unit 95 through the mixed water pipe 60 to cool the cooling unit 110 of each zone required Displaying the temperature of the mixed water supplied to the / hot water mixing faucet, the mixed water temperature control switch 96 allows to adjust the temperature of the mixed water mixed in the mixed water control valve (50).

The sub-control unit 94 is further provided with a circulating water pump start switch 97 and an alarm device 98. The circulating water pump start switch 97 is provided when the user needs mixed water. It is a switch for starting the start operation mode, the alarm device 98 serves to inform the user requesting the use of the mixed water by voice when the temperature of the mixed water satisfies the set temperature range during the system start operation mode. do. In addition, each generation is provided with a meter for measuring the supply of hot water and cold water.

The sub-control unit 94 may be provided with a water discharge hole, a bath, a shower faucet closing cover of each zone for each generation, and sets the temperature of the circulating water pipe 70 by operating the mixed water temperature control switch 96, When the circulating water pump start switch 97 is pressed, the mixed water can be used at a user set temperature.

The water discharge port may be provided with a separate switch and lever in the operation unit, the separate switch is a switch for selecting hot water and cold water, the separate lever is a lever for adjusting the flow rate of hot water and cold water. When the hot water is selected by operating the switch, the mixed water at a temperature set by the user is supplied, and when the cold water is selected, cold cold water is supplied.

When the cold and hot water supply system is operated in the normal operation mode and the start operation mode described as follows.

The normal operation mode is generally used in general, and supplies cold water supplied from an external water supply pressurizing pipe to the central heat exchanger 20 through the water supply pipe 21 and the first water supply pipe 21-1.

The central heat exchanger 20 receives the heat medium through the heat medium supply pipe 22 from an external facility, and heats the cold water introduced into the water supply pipe 21 and the first water supply pipe 21-1 to heat the hot water. The hot water supply pipe to the granular hot water supply pipe 30 through the main hot water supply pipe 32 to supply hot water to each floor generation, and communicates with each other to the rooftop main hot water pipe (not shown) at the end of the granular hot water supply pipe 30, respectively. After joining the common granular water exchange pipe (not shown), the main circulation pipe (not shown) is repeatedly circulated through the central heat exchanger 20.

Cold water supplied from the external water supply pressurizing pipe is supplied to the granular cold water supply pipe 10 through the main cold water supply pipe 12, and the mixed water control valve through the first cold water supply pipe 14 branched from the granular cold water supply pipe 10. Supplied to 50a and 50b.

Not only cold cold water is supplied to the mixed water control valves 50a and 50b, but through the second high temperature water supply pipe 36 branched from the integrated heat exchanger 40 that is integrally manufactured with the granular hot water supply pipe 30. The hot water is supplied to mix the cold and hot water to generate the mixed water set by the user. The generated mixed water is supplied to the cold / hot water mixed faucet of the required place 110 of each zone through the mixed water pipe 60 communicating with the outlets of the mixed water control valves 50a and 50b. At this time, the circulating water pump 80 is not in operation.

The start operation mode is a mode in which the user operates the start switch of the sub-control unit 94 provided in each generation shower room inlet and the shower faucet when the user wants to use the mixed water anew. 70 is circulated from the circulating water pump 80 to the integrated heat exchanger 40 without discarding the remaining water of the circulating water pump 80 and exchanged with the granular hot water supply pipe 30 for reuse.

When the normal operation mode is switched to the start operation mode at the request of the user, the circulating water pump 80 provided inside the case 52 of the mixed water control valve 50 is stopped while the normal operation mode is stopped. The residual water of the circulating water pipe 70 is supplied to the integrated heat exchanger 40.

The granular hot water supply pipe 30 and the integral heat exchanger 40 which are manufactured integrally for each floor generation are manufactured in a double pipe structure having the granular hot water supply pipe 30 and the inner / outer space part at the household hot water meter granular branch of each floor. The inner pipe supplies the hot water to the granular hot water supply pipe 30 through the hot water meter to each floor generation, and the outer integrated heat exchanger 40 receives the residual water introduced from the circulating water pump 80 to the granular hot water supply pipe 30. ) As a heating source and reheated to the mixed water control valve 60 to generate hot water earlier than the time for heating cold water in the central heat exchanger 20 to the mixed water control valve 50. The mixed water is mixed with the residual water in the mixed water control valve 50 to generate mixed water, and the mixed water is supplied to the mixed cold / hot water faucet of each zone.

The cold and hot water supply system is to be used in parallel with the normal operation mode and the start operation mode described above, usually operating the system in the normal operation mode to be used for heating of each generation, the user to use hot mixed water urgently In this case, by operating the sub controller 94 to switch the normal operation mode to the start operation mode, the user may not operate the cold / hot water mixed faucet to adjust the temperature of the mixed water, thereby improving user convenience. By reusing the waste water without cooling it, the waste of water is reduced, and the economic effect of this is achieved.

Referring to Figure 8, when describing the cold and hot water supply system according to another embodiment of the present invention.

Cold and hot water supply system according to another embodiment of the present invention, the granular cold water supply pipe 210, the central heat exchanger 220, the granular hot water supply pipe 230, the granular heating water supply pipe 240, integral heat exchanger ( 250, mixed water control valve 260, mixed water pipe 270, heating water supply pipe 242, heating water circulation pipe 246, circulating water pipe 280, circulating water pump 290 And a residual luch temperature sensor 282 and a control unit 300.

The granular cold water supply pipe 210, the central heat exchanger 220, the granular hot water supply pipe 230, the integral heat exchanger 240, the mixed water control valve 260, the mixed water pipe 270, and the circulation The water pipe 280, the circulating water pump 290, the residual water temperature sensor 282, and the controller 300 have the same configuration and contents according to the exemplary embodiment of the present invention.

However, although the integrated heat exchanger 250 has the same configuration as the integrated heat exchanger 40 in one embodiment of the present invention, in one embodiment of the present invention, the integrated heat exchanger 250 is integrally connected to the granular hot water supply pipe 30. In another embodiment of the present invention, it is differentiated in that it is a structure that is integrally connected with the granular heating water supply pipe 240.

The hot water supplied to the integrated heat exchanger 250 is supplied through the first high temperature water supply pipe 234 branched from the granular hot water supply pipe 230 as in the embodiment of the present invention.

The granular heating water supply pipe 240 receives high temperature water from the central heat exchanger 220, and receives high temperature water for each generation of heating water through the heating water supply pipe 242 branched from the granular heating water supply pipe 240. Supply water.

The hot water supplied through the heating water supply pipe 242 branched from the granular heating water supply pipe 240 is used for heating of each household, and the heating water used for heating of each household is the heating water return pipe 244. It is returned to the integrated heat exchanger 250 through.

The heating water returned to the integrated heat exchanger 250 is mixed and supplied from the granular hot water supply pipe 230 to exchange heat with the heating water supply pipe 240 to be supplied to the mixed water control valve 260 for reuse.

The cold and hot water supply system according to another embodiment of the present invention mentioned above is not useful in countries with geographical conditions that do not require year-round heating, but may be useful in countries with geographical conditions that require annual heating.

The heating water, which is the hot water supplied to the granular heating water supply pipe 240, is not used as hot water in each generation, but is supplied to the integrated heat exchanger 250 after being used for heating of each generation, thereby providing the integrated heat exchanger. After the heat exchange at 250 and supplied to the mixed water control valve 260 is reused in the place of each generation, the chemical feeder (not shown) to inject the disinfecting chemicals, etc. do not need to be installed to reduce costs There is an effect that can be effective and the use of water efficiently.

Although the present invention has been described with reference to the embodiments illustrated in the drawings, this is merely exemplary, and it will be understood by those skilled in the art that various modifications and equivalent other embodiments are possible. Therefore, the true technical protection scope of the present invention will be defined by the technical spirit of the appended claims.

10: granular cold water supply pipe 20: central heat exchanger
30: granular hot water supply pipe 40: integral heat exchanger
50: mixed water control valve 60: mixed water pipe
70: circulating water pipe 80: circulating water pump
90 control unit 100 electric valve
110: required 210: granular cold water supply pipe
220: central heat exchanger 230: granular hot water supply pipe
240: granular heating water supply pipe 250: integral heat exchanger
260: mixed water control valve 270: mixed water pipe
280: circulating water pipe 290: circulating water pump
300: control unit 310: electric valve
320: Where to go

Claims (13)

In the cold and hot water supply system for providing hot water and cold water to a plurality of generations by using a district heating facility or an external facility of the central heating facility,
A granular cold water supply pipe for supplying cold water introduced from the outside through the main cold water supply pipe;
A central heat exchanger for heating cold water introduced from the outside through a water supply pipe to heat the water by using a heat medium introduced from the external equipment;
A granular hot water supply pipe through which the hot water is supplied from the central heat exchanger through the main hot water supply pipe;
An integrated heat exchanger installed in the granular hot water supply pipe so as to correspond to each generation, and supplied with hot water branched through a first high temperature hot water supply pipe branched from the granular hot water supply pipe;
Installed in each generation, the mixed water control to discharge the mixed water by using the hot water branched through the second hot water supply pipe branched from the integrated heat exchanger and cold water branched from the granular cold water supply pipe through the first cold water supply pipe valve;
A mixed water pipe communicating with an outlet of the mixed water control valve and supplying the mixed water flowing out of the mixed water control valve to each generation required;
A circulating water pipe communicating with the mixed water pipe and circulating residual water of the mixed water pipe;
A circulating water pump in which residual water of the circulating water pipe is introduced and supplies the introduced residual water to the integrated heat exchanger;
Residual water temperature sensor for sensing the temperature of the circulating residual water; And
It includes a control unit for controlling the operation of the circulating water pump,
The control unit,
In the start-up operation mode in which the use request information of the mixed water is received from a user, the circulating water pump is operated until the temperature of the residual water detected from the residual water temperature sensor satisfies a set temperature range. After heating a portion in the integrated heat exchanger, the mixed water control valve is introduced as hot water and the remainder of the residual water is introduced as cold water into the mixed water control valve,
In the normal operation mode, the operation of the circulating water pump is stopped to prevent the residual water and the mixed water from flowing into the circulating water pipe, and the hot water flowing into the second high temperature water supply pipe is transferred to the mixed water control valve. And cold water branched through the first cold water supply pipe into the mixed water control valve as cold water.
In the cold and hot water supply system for providing hot water and cold water to a plurality of generations by using a district heating facility or an external facility of the central heating facility,
A granular cold water supply pipe for supplying cold water introduced from the outside through the main cold water supply pipe;
A central heat exchanger for heating cold water introduced from the outside through a water supply pipe to heat the water by using a heat medium introduced from the external equipment;
A granular hot water supply pipe through which the hot water is supplied from the central heat exchanger through the main hot water supply pipe;
A granular heating water supply pipe through which the hot water is supplied from the central heat exchanger through the main hot water supply pipe;
An integrated heat exchanger installed to correspond to each generation and installed with the granular heating water supply pipe and supplied with hot water branched through a first high temperature water supply pipe branched from the granular hot water supply pipe;
Installed in each generation, the mixed water control to discharge the mixed water by using the hot water branched through the second hot water supply pipe branched from the integrated heat exchanger and cold water branched from the granular cold water supply pipe through the first cold water supply pipe valve;
A mixed water pipe communicating with an outlet of the mixed water control valve and supplying the mixed water flowing out of the mixed water control valve to each generation required;
A heating water supply pipe branched from the granular heating water supply pipe and supplying heating water to a heating water source of each household;
A heating water circulation pipe communicating with the integrated heat exchanger connected to the heating water supply pipe and circulating the residual water of the heating water supply pipe to circulate with the integrated heat exchanger;
A circulating water pipe communicating with the mixed water pipe and circulating residual water of the mixed water pipe;
A circulating water pump in which residual water of the circulating water pipe is introduced and supplies the introduced residual water to the integrated heat exchanger;
Residual water temperature sensor for sensing the temperature of the circulating residual water; And
It includes a control unit for controlling the operation of the circulating water pump,
The control unit,
In the start-up operation mode in which the use request information of the mixed water is received from a user, the circulating water pump is operated until the temperature of the residual water detected from the residual water temperature sensor satisfies a set temperature range. After heating a portion in the integrated heat exchanger, the mixed water control valve is introduced as hot water and the remainder of the residual water is introduced as cold water into the mixed water control valve,
In the normal operation mode, the circulating water pump is stopped to prevent the residual water and the circulating water from flowing into the circulating water pipe, and the hot water flowing into the second high temperature water supply pipe is fed to the mixed water control valve. And cold water branched through the first cold water supply pipe into the mixed water control valve as cold water.
The method according to claim 1 or 2,
The integrated heat exchanger,
A shell filled with hot water flowing from the granular hot water supply pipe and having a plurality of baffles installed therein; And
The shell may include a first inlet through which hot water from the granular hot water supply pipe flows, a high temperature water flowing into the shell from the granular hot water supply pipe, and an outlet formed at an upper portion of the inlet, and a lower portion of the first inlet. Cold and hot water supply system is formed with a second inlet through which the residual water passed through the mixed water control valve.
The method according to claim 3,
The baffle is cold and hot water supply system is formed with a first through hole through which the granular hot water supply pipe passes, and a plurality of second through holes through which hot water flowing from the granular hot water supply pipe passes.
The method according to claim 3,
The baffle is cold and hot water supply system is formed with a first through hole through which the granular heating water supply pipe passes, and a plurality of second through holes through which hot water flowing from the granular hot water supply pipe passes.
The method according to claim 3,
The plurality of baffles are cold and hot water supply system is arranged along the height direction of the shell.
The method according to claim 1 or 2,
And a first flow meter installed in the first high temperature water supply pipe and checking a flow rate of the high temperature water introduced into the integrated heat exchanger.
The method according to claim 1 or 2,
In the start operation mode,
A part of the residual water supplied from the circulating water pump is branched and supplied as cold water to the mixed water control valve, and is closed in the normal operation mode on the pipe supplied from the circulating water pump to the integrated heat exchanger, and the start-up operation. Cold and hot water supply system with an electric valve that opens in mode.
The method according to claim 1 or 2,
The residual water temperature sensor is installed in the front or rear of the circulating water pump on the circulating water pipe,
It is installed on the mixed water pipe, and further comprising a mixed water temperature sensor for sensing the temperature of the mixed water,
The control unit, the hot and cold water control system for automatically adjusting the inflow of hot water and cold water flowing into the mixed water control valve based on the temperature of the mixed water detected by the mixed water temperature sensor.
The method according to claim 1 or 2,
Further comprising a first flow rate sensor installed on the mixed water pipe to sense the flow in the mixed water pipe,
The control unit, when the flow of the mixed water does not occur from the first flow rate sensor to cut off the power of the control unit, partly or entirely,
The control unit,
And the alarm device informing the user when the temperature of the circulating residual water reaches the set temperature range in the start operation mode.
The method according to claim 1 or 2,
Further comprising a second flow rate sensor for detecting cold water in the first cold water supply pipe,
And the control unit stops the operation of the circulation water pump when detecting the flow of cold water by the second flow rate sensor.
The method according to claim 1,
The hot and cold water supply system through which the granular hot water supply pipe passes through the integrated heat exchanger.
The method according to claim 2,
Cold and hot water supply system through which the granular heating water supply pipe passes through the integrated heat exchanger.

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