KR101525097B1 - cold and hot water supplying system - Google Patents

cold and hot water supplying system Download PDF

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Publication number
KR101525097B1
KR101525097B1 KR1020130146964A KR20130146964A KR101525097B1 KR 101525097 B1 KR101525097 B1 KR 101525097B1 KR 1020130146964 A KR1020130146964 A KR 1020130146964A KR 20130146964 A KR20130146964 A KR 20130146964A KR 101525097 B1 KR101525097 B1 KR 101525097B1
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South Korea
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water
zone
mixed
operation mode
supply pipe
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KR1020130146964A
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Korean (ko)
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이용춘
이근기
이대우
이누리
이승준
한창완
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이누리
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D17/00—Domestic hot-water supply systems

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Domestic Hot-Water Supply Systems And Details Of Heating Systems (AREA)
  • Bathtubs, Showers, And Their Attachments (AREA)

Abstract

In the cold / hot water supply system according to the present invention, when the temperature of the mixed water falls below the set temperature due to the unused mixed water in the shower operation mode, the mixed water is circulated and reheated, It is possible to prevent the mixed water from becoming cold. In addition, since the shower operation mode can be separately selected in addition to the starting operation mode, it is possible to prevent the mixed water remaining in the mixed water supply pipe from becoming cold in a state in which the water receiving apparatus is closed during the user's shower, . In addition, since the residual water circulation is performed only in the zone where the shower operation mode is inputted in the shower operation mode and only the zone of some of the plurality of zones, the unnecessary electric power cost and heat cost can be lowered.

Figure R1020130146964

Description

Cold and hot water supply system

The present invention relates to a cold / hot water supply system, and more particularly to a cold / hot water supply system in which residual water is recirculated and heated so that the temperature of residual water remaining in a mixed water supply pipe in a zone where a user requests a shower mode reaches a set temperature Hot water supply system for supplying the hot water again.

In general, the cold / hot water supply system includes a cold water supply pipe for supplying cold water, a hot water supply pipe for supplying hot water heated after heating cold water introduced from the cold water supply pipe, and a cold water supply pipe connected to the hot water supply pipe, And mixed water faucets for mixing and supplying cold and hot water by the operation of the water receiving handles.

In the conventional cold / hot water supply system, when the user wishes to use the hot water, cold residual water flowing in the hot water supply pipe flows and waits until hot water of a desired temperature is discharged. Therefore, waste of clean water occurs .

On the other hand, Korean Patent No. 10-1198590 discloses a cold / hot water supply system for circulating and reusing residual water in a hot water supply pipe without throwing away. However, when there is a request for hot water use by the user, not only the residual water in the hot water supply pipe connected to the faucet having the use request is recirculated, but also the hot water supply pipe connected to the faucet without use request recirculates the residual water, There is a problem that electricity and heat are consumed and a financial loss occurs.

In addition, while the user is showering and locking the faucet for soap or other toilet, the temperature of the remaining water remaining in the hot water supply pipe is gradually lowered, so that the user may feel discomfort due to the cold water remaining when the faucet is opened again. Not only there is a problem to be felt, but also there is a problem that water is wasted because the cold water is flowed again to wait for hot water.

An object of the present invention is to provide a cold / hot water supply system capable of re-circulating residual water so that the temperature of the remaining water remaining in the mixed water supply pipe of the zone requiring the user's shower mode reaches the set temperature, .

The cold / hot water supply system according to the present invention comprises at least one water receiving device, a cold water supply pipe for supplying cold water to the water receiving device, a heater for introducing cold water branched from the cold water supply pipe and discharging heated hot water, A mixing water control valve for mixing the cold water flowing into the heater and the hot water heated by the heater; and a mixing water control valve for connecting the mixing water control valve and the water receiving device to supply the mixed water mixed in the mixing water control valve to the water receiving device A residual water circulation pipe for guiding the residual water remaining in the mixed water supply pipe to circulate to the heater, a residual water circulation pump installed in the residual water circulation pipe, A mixed water temperature sensor for measuring a temperature; an input unit for inputting a shower operation mode signal by a user; When the temperature of the mixed water detected by the mixed water temperature sensor is lower than the set temperature at the time of input of the mode signal, the residual water circulating pump is operated, the recirculating opening / closing valve is opened, And a control unit for controlling the circulation to the heater through the residual water circulation pipe.

In the cold / hot water supply system according to the present invention, when the temperature of the mixed water falls below the set temperature due to the unused mixed water in the shower operation mode, the mixed water is circulated and reheated, It is possible to prevent the mixed water from becoming cold.

In addition, since the shower operation mode can be separately selected in addition to the starting operation mode, it is possible to prevent the mixed water remaining in the mixed water supply pipe from becoming cold in a state where the water receiving apparatus is closed during the user's shower, So that comfort and convenience can be further improved.

Further, by circulating the mixed water and reheating the same, the mixture is supplied again, and the mixed water that has been cooled down is not discarded, so that waste of water in the shower can be reduced.

Further, the cold water supply pipe and the mixed water supply pipe are connected, and the remaining water in the mixed water supply pipe is recirculated by using the cold water supply pipe, so that the existing facilities can be used.

In addition, since the residual water circulation is performed only in the zone where the shower operation mode is inputted in the shower operation mode and only the zone of some of the plurality of zones, the unnecessary electric power cost and heat cost can be lowered.

1 is a configuration diagram of a cold / hot water supply system according to an embodiment of the present invention.
Fig. 2 is a view showing a state in which both the first zone and the second zone are in the normal operation mode in Fig. 1. Fig.
Fig. 3 is a view showing a state in which a shower operation mode signal is input in the first zone in Fig. 1, and the residual water is circulated when the temperature of the mixed water in the mixed water supply pipe is lower than the set temperature.
Fig. 4 is a view showing a state in which a shower operation mode signal is input in the second zone in Fig. 1, and the residual water is circulated when the temperature of the mixed water in the mixed water supply pipe is lower than the set temperature.
FIG. 5 is a view showing a state in which a shower operation mode signal is input in both the first zone and the second zone in FIG. 1, and the remaining water is circulated when the temperature of the mixed water in the mixed water supply pipe is lower than the set temperature.
FIG. 6 is a view showing the input unit of FIG. 1. FIG.
7 is a control block diagram of the cold / hot water supply system shown in FIG.
8 is a schematic view showing power supply of the cold / hot water supply system shown in FIG.
9 is a configuration diagram of a cold / hot water supply system according to another embodiment of the present invention.
FIG. 10 is a view showing a state in which both the first zone and the second zone are in the normal operation mode in FIG.
Fig. 11 is a view showing a state in which a shower operation mode signal is input in the first zone in Fig. 9 and the residual water is circulated when the temperature of the mixed water in the mixed water supply pipe is lower than the set temperature.
FIG. 12 is a diagram showing a state in which a shower operation mode signal is input in the second zone in FIG. 9, and the remaining water is circulated when the temperature of the mixed water in the mixed water supply pipe is lower than the set temperature.
13 is a view showing the input unit of Fig.
14 is a control block diagram of the cold / hot water supply system shown in FIG.

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

1 is a configuration diagram of a cold / hot water supply system according to an embodiment of the present invention.

Referring to FIG. 1, a cold / hot water supply system according to an embodiment of the present invention is a system that divides one indoor space into a plurality of zones and supplies cold water or hot water to the plurality of zones, However, the present invention is not limited to this, and it is also possible to use water in which at least one water receiving apparatus is provided in one zone. In the case of a large indoor space having a plurality of kitchens, bathrooms, etc., it takes a long time to supply cold water or hot water to a plurality of kitchens or baths, and therefore, it can be divided into zones so that cold water or hot water is supplied, respectively. Here, the plurality of zones are divided into two first zones 100 and a second zone 200, for example. The first zone 100 and the second zone 200 may each include at least one water receiving device. The water receiving apparatus includes a kitchen sink, a bathroom sink, a bathroom shower, a bathroom bath, and the like. Here, the first zone 100 includes two first receiving units 110 and a second receiving unit 120, and the second zone 200 includes three third receiving units 210, 4 < / RTI > receiving apparatus 220 and the fifth receiving apparatus 230 will be described by way of example.

The cold / hot water supply system includes a cold water pipe 20, a heater 12, a mixed water control valve 30 and 40, a mixed water supply pipe 38 and 48, a mixed water temperature sensor 36 and 46, Off valves 34 and 44, a residual water circulation pipe 50, an input unit, and a control unit 80.

The cold water pipe (20) is an external cold water pipe connected to the external water pipe to supply cold water. The cold water pipe 20 includes a zone cold water supply pipe 22 for supplying cold water to the first zone 100 and the second zone 200, And a heater cold water supply pipe (21) for supplying cold water to the heater. In the present embodiment, the zone cold water supply pipe 22 and the heater cold water supply pipe 21 are branched from the cold water pipe 20, but the present invention is not limited thereto, It is also possible that the heater cold water supply pipe 21 is separately connected to the external water pipe. A first flow rate sensor 23 is installed in the cold water pipe 20 and a cold water check valve 25 is installed in the heater cold water pipe 21.

The zone cold water supply pipe 22 includes a first cold water pipe 111 connected to the first water receiving unit 110 and a second cold water pipe 111 connecting the first water receiving unit 110 and the second water receiving unit 120, A third cold water pipe 211 connected to the third water receiving device 210 and a fourth cold water pipe 211 connecting the third water receiving device 210 and the fourth water receiving device 220, And a fifth water pipe 231 connecting the fourth water receiving unit 220 and the fifth water receiving unit 230. The fifth water receiving unit 230 is connected to the fourth water receiving unit 220 and the fifth water receiving unit 230,

The heater (12) is a device for introducing and heating cold water from the heater cold water supply pipe (21) and discharging heated hot water. Although the heater 12 is a boiler, it is also possible to use a geothermal and electric water heater, a solar water heater, a gas water heater or the like.

The mixed water control valves 30 and 40 mix the cold water flowing into the heater 12 and the hot water heated by the heater 12 to supply mixed water. The mixed water control valves 30 and 40 include a first zone mixing water control valve 30 for supplying mixed water to the first zone 100 and a second zone mixing water control valve 30 for supplying mixed water to the second zone 200 And a second zone mixing water control valve (40). That is, the mixing water control valves 30 and 40 may be installed in a number corresponding to the number of the zones.

The first zone mixing water control valve 30 includes a first cold water inflow pipe 31 connected to the heater cold water supply pipe 21 to introduce cold water and a second cold water inflow pipe 31 connected to the discharge side of the heater 12, The hot water inflow pipe 32 is connected to the first hot water inflow pipe 32. The first zone mixing water control valve 30 is connected to the first zone 100 and a first zone mixing water supply pipe 38 described later.

The first zone mixing water supply pipe 38 supplies mixed water mixed in the first zone mixing water control valve 30 to the first zone 100.

The first zone mixed water supply pipe 38 includes a first mixed water pipe 112 connected to the first water receiving device 110 and a second mixed water pipe 112 connected to the first water receiving device 11 and the second water receiving device 120 And a second mixing water pipe 122 for connecting the first and second water pipes.

The first zone mixed water supply pipe (38) is provided with a first zone recirculation opening / closing valve (34). The first zone recycling opening / closing valve 34 is opened and closed in response to a signal from the controller 80. That is, the first zone recycling opening / closing valve 34 is normally open and is opened or shielded in an operation mode for the re-circulation of the remaining water.

The second zone mixing water control valve 40 includes a second cold water inflow pipe 41 connected to the heater cold water supply pipe 21 for introducing cold water and a second cold water inflow pipe 41 connected to the discharge side of the heater 12, The second hot water inflow pipe 42 is connected. The second zone mixing water control valve 40 is connected to the second zone 200 and a second zone mixing water supply pipe 48 described later.

The second zone mixing water supply pipe 48 supplies the mixed water mixed in the second zone mixing water control valve 40 to the second zone 200.

The second zone mixed water supply pipe 48 includes a third mixed water pipe 212 connected to the third water receiving device 210 and a third mixed water pipe 212 connected to the third water receiving device 210 and the fourth water receiving device 220 And a fifth mixed water pipe 232 connecting the fourth water receiving device 220 and the fifth water receiving device 230. The fourth water mixing pipe 222 connects the fourth water receiving device 220 and the fifth water receiving device 230,

And the second zone recirculation opening / closing valve 44 is installed in the second zone mixed water supply pipe 48. The second zone recycling opening / closing valve 44 is opened / closed in response to a signal from the controller 80. That is, the second zone recycling opening / closing valve 44 is normally open and is opened or shielded when the residual water is recirculated.

The mixed water temperature sensor 36 and 46 are provided with a first temperature sensor 36 provided in the first zone mixed water supply pipe 38 and a second temperature sensor 36 provided in the second zone mixed water supply pipe 48. [ (46). In the shower operation mode, the controller 80 compares the temperature of the mixed water set by the user with the temperature sensed by the mixed water temperature sensors 36 and 46 to determine whether or not the remaining water is circulated.

The first temperature sensor 36 measures the temperature of the mixed water flowing through the first zone mixed water supply pipe 38. The control unit 80 may control the first zone mixing water control valve 30 according to the temperature sensed by the first temperature sensor 36.

The second temperature sensor (46) measures the temperature of the mixed water flowing through the second zone mixed water supply pipe (48). The control unit 80 may control the second zone mixing water control valve 40 according to the temperature sensed by the second temperature sensor 46.

The first zone mixing water control valve 30 and the second zone mixing water control valve 40 are connected to the first temperature sensor 36 and the second temperature sensor 46, To provide the temperature of the mixed water required by the user. Various known technologies may be applied to the integrated valve unit so long as the temperature of the mixed water can be adjusted not only by the structure described above. In addition, the first zone sensor 30 and the second zone water control valve 40 are not separately provided, and the first zone temperature sensor 36 and the second temperature sensor 46 are not separately provided, The automatic temperature control of the number may not be performed. In this case, the first zone mixing water control valve 30 and the second zone mixing water control valve 40 can be manually and variously adjusted so that cold water and hot water are introduced at a predetermined ratio.

The remaining water circulation pipe 50 connects the respective ends of the first zone mixed water supply pipe 38 and the second zone mixed water supply pipe 48 with the heater 12 to supply the first zone mixed water supply pipe 38) and the remaining water in the second zone mixed water supply pipe (48).

The remaining water circulation pipe 50 includes a first water pipe 51 for circulating the water remaining in the first zone 100 and a second water pipe 51 for circulating the remaining water in the second zone 200 52). The first residual water pipe (51) and the second residual water pipe (52) are joined together in the casing (10).

The residual water circulation pipe (50) is provided with a residual water circulation pump (70) and a residual water check valve (56). The residual water circulation pipe (50) is provided with a residual water temperature sensor (55) for measuring the temperature of the residual water. The residual water temperature sensor 55 detects the temperature of the residual water circulation pipe 50 so that it is possible to prevent the residual water circulation pipe 50 from being frozen in the winter season.

Referring to FIGS. 6 and 7, the input units 101 and 201 are devices for inputting a desired operating condition by the user. The input units 101 and 201 include a first zone input unit 101 installed in the first zone 100 and a second zone input unit 201 installed in the second zone 200, do. As described above, the input unit 101 and the input unit 201 are provided in the first zone 100 and the second zone 200, respectively. However, the present invention is not limited thereto. Or may be installed in any one of the second zones 200, and it is of course possible that the zones are installed for each of the water receiving devices of the zones. The input units 101 and 201 may transmit a user's input signal to the control unit 80 through Wi-Fi communication or wired / wireless communication with the control unit 80. The input units 101 and 201 are remote controllers, for example.

The input units 101 and 201 include a start operation input unit 93 for starting a system or inputting a start operation mode signal for remaining water circulation, a shower operation input unit 94 for inputting a shower operation mode signal, A temperature control unit 92 for controlling the temperature of the mixed water, a selection unit 95 for selecting a function to be input, And an alarm unit (not shown) for informing the user.

The startup operation input unit 93 is a switch for turning on the heater 12 or the entire system when it is off, or for starting a startup operation mode when the user needs hot mixing water.

The shower operation input unit 94 is a switch that the user inputs when showering. When a signal is input from the shower operation input unit 94, the controller 80 monitors the temperature of the mixed water and the shower time. The shower operation input unit 94 may be configured such that it is turned on by pressing once and turned off by pressing again.

It is of course possible that the user sets the shower time through the selector 95.

The alarm unit (not shown) may be any device capable of notifying an alarm sound or an alarm message.

The control unit 80 selectively opens or closes the first zone recirculation switching valve 34 and the second zone recirculation switching valve 44 in accordance with a signal input by the user through the input units 101 and 201, It can be shielded.

The first and second zone mixing water control valves 30 and 40 and the first and second zone recycling opening and closing valves 34 and 44 are provided in one unit 14. The unit (14) is provided in the casing (10) and the heater (12). However, the present invention is not limited to this, and it is of course possible to provide the heater 12 separately from the heater 12.

Referring to Fig. 8, a configuration for power supply is shown. The controller 80 is installed on a circuit board (PCB) 81. The circuit board 81 is provided with a capacitor 82 and the capacitor 82 stores the electric power supplied from the external power source 85. Reference numeral 84 denotes a switch 84 which is turned on / off to interrupt power supply. Reference numeral 83 denotes a power supply 83 for converting an AC current received from the external power supply 85 into a direct current so as to be stably used, to be.

The operation of the cold / hot water supply system according to one embodiment of the present invention will now be described.

First, FIG. 2 shows a state in which the first zone 100 and the second zone 200 are in normal operation mode. When the user does not input the start operation mode signal or the shower operation mode signal through the input unit 101 (201) separately, it is operated in the normal operation mode state.

In the normal operation mode, the control unit 80 stops the operation of the residual water circulation pump 70. Also, the controller 80 opens both the first zone recirculation switching valve 34 and the second zone recirculation switching valve 44.

The cold water is supplied to the first zone 100 and the second zone 200 through the zone cold water supply pipe 22 and is supplied to the heater 12 through the heater cold water supply pipe 21.

The hot water heated in the heater 12 is mixed with the cold water in the first zone mixing water control valve 30 and the second zone mixing water control valve 40 and mixed with the mixing water of the preset temperature. At this time, the first and second zone mixing water control valves 30 and 40 control the mixing of the cold water and the hot water in the first and second zone mixing water control valves 30 and 40 according to the temperature of the mixed water sensed by the first temperature sensor 36 and the second temperature sensor 46 The mixing ratio can be adjusted.

The mixed water mixed in the first zone mixing water control valve 30 is supplied to the first zone 100 through the first zone mixing water supply pipe 38. The mixed water mixed in the second zone mixing water control valve 40 is supplied to the second zone 200 through the second zone mixing water supply pipe 48.

Fig. 3 is a view showing a state in which a shower operation mode signal is input in the first zone in Fig. 1, and the residual water is circulated when the temperature of the mixed water in the mixed water supply pipe is lower than the set temperature.

3, when the user inputs a shower operation mode signal through the shower operation input unit 94 of the first zone input unit 101 in the first zone 100, the hot / The mode is switched to the operation mode.

When the shower operation mode signal is inputted, the controller 80 controls the operation of the residual water circulation pump 70, the first zone recirculation opening / closing valve 34, and the second zone recirculation opening / closing valve 34 according to the temperature sensed by the first temperature sensor 36. [ And controls the operation of the second zone recirculation switching valve 44.

When the shower operation mode signal is input, the controller 80 determines whether the temperature of the mixed water detected by the first temperature sensor 36 is lower than a predetermined set temperature. In the shower operation mode, when the user temporarily closes the water receiving devices for soaking or the like and does not use the mixed water, the mixed water in the first zone mixed water supply pipe 38 remains and the temperature is lowered. Therefore, when the temperature of the mixed water detected by the first temperature sensor 36 is less than a predetermined set temperature, the mixed water remaining in the first zone mixed water supply pipe 38 is recirculated and heated. Here, the set temperature may be set to a temperature that is about 2 to 3 degrees lower than the reference temperature that is set automatically when the user does not input the required temperature set by the first zone input unit 101 or the user's temperature.

 The control unit 80 activates the residual water circulation pump 70 when the temperature of the mixed water detected by the first temperature sensor 36 is less than a predetermined set temperature and the first zone recirculation opening / 34 are opened, and the second zone recycling opening / closing valve 44 is closed. At this time, the controller 80 informs the user of the reheating of the residual water through the alarm signal.

When the residual water circulation pump 70 is operated and the first zone recycling opening and closing valve 34 is opened, the mixed water is supplied to the first and second mixed water pipes 112 through the first zone mixed water supply pipe 38, And the remaining water in the first and second mixed water pipes 112 and 122 circulates to the heater 12 side through the first residual water pipe 51. [ By circulating the water in the first zone mixed water supply pipe 38 and the first and second mixed water pipes 112 and 122 without heating it and supplying the heated water to the user, It will be available.

The residual water circulated through the first residual water pipe (51) to the heater cold water pipe (21) is supplied to the heater (12) or the first zone mixing water control valve (30).

The residual water flowing into the heater (12) is reheated in the heater (12). At this time, the temperature of the residual water is higher than the temperature of the cold water. Therefore, in the heater 12, the residual water having a temperature higher than the cold water can be heated faster.

The residual water flowing into the first zone mixing water control valve 30 is mixed with the hot water in the first zone mixing water control valve 30. At this time, since the temperature of the residual water is higher than the temperature of the cold water, when the residual water and the hot water are mixed, the temperature of the mixed water can be increased faster than when mixed with the cold water, .

Accordingly, when the shower operation mode signal is input, the mixed water of the first zone 100 to which the shower operation mode signal is input is not recirculated while the user temporarily uses the mixed water to soap or the like, So that the temperature of the mixed water can always be maintained at the set temperature inputted by the user.

On the other hand, the second zone recycling opening / closing valve 44 is shielded, and the remaining water in the second zone 200 is not circulated. When the shower operation mode signal is inputted only in the first zone 100, the remaining water is circulated only in the first zone 100 and the remaining water is not circulated in the second zone 200. Therefore, it is possible to prevent unnecessary circulation of the remaining water in the second zone 200 in which the shower operation mode signal is not inputted, and to prevent waste of gas and electric energy for heating the cold remaining water in the unused zone have.

Meanwhile, when the shower operation mode signal for the second zone 200 is input while the remaining water in the first zone 100 is circulated, the second zone recirculation opening / closing valve 44 is also opened together with the second zone recirculation opening / The remaining water in the zone 200 is circulated.

On the other hand, if the user opens at least one of the water receiving devices and uses water after the shower operation mode signal is input, the shower operation mode is automatically stopped. That is, the operation of the residual water circulation pump 70 is stopped so that the mixed water is supplied to the water receiving apparatus without circulation. Thereafter, when the user does not use the mixed water due to the locking of the water receiving apparatus, the controller 80 controls the residual water circulating pump 70 (70) according to the temperature of the mixed water sensed by the first temperature sensor 36 ).

The control unit 80 stops the operation of the residual water circulation pump 70 when the temperature of the mixed water detected by the first temperature sensor 36 reaches a predetermined set temperature.

When the shower operation mode signal is input, the control unit 80 may interrupt the supply of the external power, terminate the shower operation mode, or terminate the operation of the system. Here, the set time may be basically set to about 1 hour, and the user may adjust the shower time through the selector 95. After the shower operation mode signal is input, if it exceeds the set time, it is determined that the shower is over and the shower operation mode is ended or the operation of the system is automatically terminated. Here, an example will be described by terminating the system.

Referring to FIG. 8, the control unit 80 can turn off the switch 84 and shut off the supply of the external power source 85 to terminate the system. When the supply of the external power source 85 is cut off, the power supply to the circuit board (PCB) 81 is interrupted to maintain the temporarily terminated state. Since the power is stored in the capacitor 82 even if the supply of the external power source 85 is interrupted, the user can not input the signal through the input unit 101 or 201, Can be operated again. When the electric power stored in the capacitor 82 is reduced by a predetermined amount or more, the controller 80 may turn on the switch 84 to supply the external power source 85.

 The user can be informed by the alarm unit (not shown) or the display unit 91 of the remaining water circulation in the shower operation mode by voice, alarm sound, message or the like.

On the other hand, when the user inputs the start operation mode signal in the first zone 100, the residual water circulation pump 70 is operated and the first zone recycle opening / closing valve 34 And the second zone recycling opening / closing valve 44 is shielded, so that only the mixed water of the first zone 100 can be recycled and heated.

Fig. 4 is a view showing a state in which a shower operation mode signal is input in the second zone in Fig. 1, and the residual water is circulated when the temperature of the mixed water in the mixed water supply pipe is lower than the set temperature.

4, when a user inputs a shower operation mode signal through the shower operation input unit 94 of the second zone input unit 201 in the second zone 200, the hot / .

When the shower operation mode signal is input, the control unit 80 controls the residual water circulation pump 70, the first zone recycling opening / closing valve 34, and the second zone recirculation opening / closing valve 34 in accordance with the temperature sensed by the second temperature sensor 46. [ And controls the operation of the second zone recirculation switching valve 44.

When the shower operation mode signal is input, the controller 80 determines whether the temperature of the mixed water detected by the second temperature sensor 46 is lower than a predetermined set temperature. In the shower operation mode, when the user temporarily closes the water receiving devices for soaping and does not use the mixed water, the mixed water in the second zone mixed water supply pipe 48 remains and the temperature is lowered. Therefore, when the temperature of the mixed water detected by the second temperature sensor 46 is less than a predetermined set temperature, the mixed water remaining in the second zone mixed water supply pipe 48 is recirculated and heated. Here, the set temperature may be set to a temperature that is about 2 to 3 degrees lower than the reference temperature that is automatically set when there is no required temperature set by the user through the second zone input unit 201 or a user's temperature input.

 The control unit 80 operates the residual water circulation pump 70 when the temperature of the mixed water detected by the second temperature sensor 46 is less than a predetermined set temperature and the second zone recirculation opening / 44 are opened, and the first zone recycling opening / closing valve 34 is closed.

When the residual water circulation pump 70 is operated and the second zone recycling opening and closing valve 44 is opened, the mixed water flows through the second zone mixed water supply pipe 48 to the third, And the remaining water in the third, fourth and fifth mixed water pipes 212, 222 and 232 is supplied to the heater 12 through the second residual water pipe 52 Circulate. By circulating the water in the second zone mixed water supply pipe 48 and the third, fourth, and fifth mixed water pipes 212, 222, 232 without heating the water, The hot water can be supplied more quickly.

The residual water circulated to the heater cold water supply pipe (21) is supplied to the heater (12) or the second zone mixed water control valve (40).

The residual water flowing into the heater (12) is reheated in the heater (12). At this time, the temperature of the residual water is higher than the temperature of the cold water. Therefore, in the heater 12, the residual water having a temperature higher than the cold water can be heated faster.

The residual water flowing into the second zone mixing water control valve 40 is mixed with the hot water in the second zone mixing water control valve 40. At this time, since the temperature of the residual water is higher than the temperature of the cold water, when the residual water and the hot water are mixed, the temperature of the mixed water can be increased faster than when mixed with the cold water, .

Therefore, when the shower operation mode signal is input, the mixed water of the second zone 200, to which the shower operation mode signal is input, is recirculated while the user does not temporarily use the mixed water to soap or the like So that the temperature of the mixed water can always be maintained above the set temperature.

Meanwhile, when the shower operation mode signal for the first zone 100 is inputted while the remaining water in the second zone 200 is circulated, the first zone recirculation opening / closing valve 34 is also opened together with the first zone recirculation opening / The remaining water in the zone 100 is circulated.

On the other hand, the first zone recycling opening / closing valve 34 is shielded, and the remaining water in the first zone 100 is not circulated. When the shower operation mode signal is input only in the second zone 200, the remaining water is circulated only in the second zone 200, and the remaining water is not circulated in the first zone 100. Therefore, the circulation of the unnecessary remaining water in the first zone 100 in which the shower operation mode signal is not inputted can be prevented.

On the other hand, if the user opens at least one of the water receiving devices and uses water after the shower operation mode signal is input, the shower operation mode is automatically stopped. That is, the operation of the residual water circulation pump 70 is stopped so that the mixed water is supplied to the water receiving apparatus without circulation. Thereafter, if the user does not use the mixed water due to the locking of the water receiving apparatus, the controller 80 controls the residual water circulating pump 370 ).

The control unit 80 stops the operation of the residual water circulation pump 70 when the temperature of the mixed water detected by the second temperature sensor 46 reaches a predetermined set temperature.

When the shower operation mode signal is input, the control unit 80 may interrupt the supply of the external power, terminate the shower operation mode, or terminate the operation of the system. Here, the set time may be basically set to about one hour, and it is of course possible that the set time is adjusted by the user. After the shower operation mode signal is input, if it exceeds the set time, it is determined that the shower is over and the shower operation mode is ended or the operation of the system is automatically terminated. Here, an example will be described by terminating the system.

Referring to FIG. 8, the control unit 80 can turn off the switch 84 and shut off the supply of the external power source 85 to terminate the system. When the supply of the external power source 85 is cut off, the power supply to the circuit board (PCB) 81 is interrupted to maintain the temporarily terminated state. Since the power is stored in the capacitor 82 even if the supply of the external power source 85 is interrupted, the user can not input the signal through the input unit 101 or 201, Can be operated again. When the electric power stored in the capacitor 82 is reduced by a predetermined amount or more, the controller 80 may turn on the switch 84 to supply the external power source 85.

 The user can be informed by the alarm unit (not shown) or the display unit 91 of the remaining water circulation in the shower operation mode by voice, alarm sound, message or the like.

On the other hand, when the user inputs the start operation mode signal in the second zone 200, the residual water circulation pump 70 is operated and the second zone recycle opening / closing valve 44 And the first zone recycling opening / closing valve 34 is shielded, so that only the mixed water of the second zone 200 can be recycled and heated.

FIG. 5 is a view showing a state in which a shower operation mode signal is input in both the first zone and the second zone in FIG. 1, and the remaining water is circulated when the temperature of the mixed water in the mixed water supply pipe is lower than the set temperature.

Referring to FIG. 5, when the user inputs a shower operation mode signal in both the first zone 100 and the second zone 200, the cold / hot water supply system is switched to the shower operation mode.

When the shower operation mode signal is input to both the first zone 100 and the second zone 100, the controller 80 detects the shower mode signal from the first temperature sensor 36 and the second temperature sensor 46 And controls the operation of the residual water circulation pump 70, the first zone recycling opening / closing valve 34, and the second zone recycling opening / closing valve 44 in accordance with the detected temperature.

 If the temperature of the mixed water detected by the first temperature sensor 36 and the second temperature sensor 46 is lower than a predetermined set temperature, the control unit 80 controls the residual water circulation pump 70 to operate And opens both the first zone recirculation switching valve 34 and the second zone recycling opening / closing valve 44.

When both the first zone recirculation switching valve 34 and the second zone recycling opening and closing valve 44 are opened, the residual water of the first zone mixed water supply pipe 38 and the second zone mixed water supply pipe 48 ) Is recovered through the residual water circulation pipe (50). The circulated water is circulated to the heater cold water supply pipe (21).

The remaining water circulated to the heater cold water supply pipe 21 is supplied to the heater 12 or the first and second zone mixing water control valves 30 and 40.

The residual water flowing into the heater (12) is reheated in the heater (12). At this time, the temperature of the residual water is higher than the temperature of the cold water. Therefore, in the heater 12, the residual water having a temperature higher than the cold water can be heated faster.

The residual water flowing into the first and second zone mixing water control valves 30 and 40 is mixed with the hot water in the first and second zone mixing water control valves 30 and 40. At this time, since the temperature of the residual water is higher than the temperature of the cold water, when the residual water and the hot water are mixed, the temperature of the mixed water may be higher than when mixed with the cold water. Therefore, the temperature of the mixed water can be increased more quickly.

Therefore, when the shower operation mode signal is inputted, while the user does not temporarily use the mixed water to soap or the like, the shower operation mode signal is inputted to the first zone 100, The mixed water of the mixed water 200 is automatically recirculated when the temperature is lowered, so that the temperature of the mixed water can be always maintained at the set temperature set by the user.

On the other hand, if the user opens at least one of the water receiving devices and uses water after the shower operation mode signal is input, the shower operation mode is automatically stopped. That is, the operation of the residual water circulation pump 70 is stopped so that the mixed water is supplied to the water receiving apparatus without circulation.

When the temperature of the mixed water detected by the first temperature sensor 36 and the second temperature sensor 46 reaches a predetermined set temperature, the controller 80 controls the flow of the residual water circulating pump 70 Stop operation. At this time, when only the temperature of the mixed water of any one zone of the first temperature sensor (36) and the second temperature sensor (46) reaches the set temperature, the operation of the residual water circulation pump And only one of the first zone recirculation opening / closing valve 34 and the second zone recycling opening / closing valve 44 can be selectively opened.

When the shower operation mode signal is input, the control unit 80 may interrupt the supply of the external power, terminate the shower operation mode, or terminate the operation of the system. Here, the set time may be basically set to about one hour, and it is of course possible that the set time is adjusted by the user. After the shower operation mode signal is input, if it exceeds the set time, it is determined that the shower is over and the shower operation mode is ended or the operation of the system is automatically terminated. Here, an example will be described by terminating the system.

 The user can be informed by the alarm unit (not shown) or the display unit 91 of the remaining water circulation in the shower operation mode by voice, alarm sound, message or the like.

Even if the shower operation mode is input in both the first zone 100 and the second zone 200, any of the mixed water sensed by the first temperature sensor 36 and the second temperature sensor 46 The temperature of the mixed water among the first zone recirculation switching valve 34 and the second zone recirculation switching valve 44 is set to a predetermined value by operating the residual water circulation pump 70 when only the temperature of one zone is lower than the set temperature, It is of course possible to open only the valves of the low zone and shield the remaining valves.

Meanwhile, when the user inputs the start operation mode signal in both the first zone 100 and the second zone 200, the residual water circulation pump 70 is operated as shown in FIG. 5, The first zone recycling opening and closing valve 34 and the second zone recycling opening and closing valve 44 can be opened to recycle the mixed water of the first zone 100 and the second zone 200 .

9 is a configuration diagram of a cold / hot water supply system according to another embodiment of the present invention.

9, the cold / hot water supply system according to another embodiment of the present invention is characterized in that the residual water circulation pipe is formed to connect a cold water supply pipe to be described later and a mixed water supply pipe to be described later, The present invention is different from the above-described embodiment in that the water is returned through the cold water supply pipe, and the difference will be described in detail.

The cold / hot water supply system is a system for partitioning one indoor space into a plurality of zones and supplying cold water or hot water to the plurality of zones, respectively. In the present embodiment, the plurality of zones are divided into two first zones 400 and second zones 500, for example. The first zone 400 and the second zone 500 may each include at least one water receiving device. The water receiving apparatus includes a kitchen sink, a bathroom sink, a bathroom shower, a bathroom bath, and the like. Here, the first zone 400 includes two first water receiving devices 410 and a second water receiving device 420, and the second zone 500 includes three third water receiving devices 510, 4 water receiving apparatus 520 and a fifth water receiving apparatus 530. [

The cold / hot water supply system includes a cold water pipe 320, a heater 312, mixed water control valves 330 and 340, a mixed water supply pipe 338 and 348, a recirculation switching valve 334 and 344, A circulation pipe, input units 401 and 501, and a control unit 80.

The cold water pipe 320 is connected to an external water pipe to supply cold water. The cold water pipe 320 includes first and second zone cold water supply pipes 321 and 322 and a heater cold water supply pipe 323.

The first zone cold water supply pipe 321 is branched from the cold water pipe 320 and connected to the first zone 400 to supply cold water to the first zone 400. The first zone cold water supply pipe 321 branches to two first zone cold water supply pipes 411 and 412 so as to be connected to the first and second water receiving units 410 and 420 of the first zone 400 .

The second zone cold water supply pipe 322 is branched from the cold water pipe 320 and connected to the second zone 500 to supply cold water to the second zone 500. The second zone cold water supply pipe 322 is connected to three second zone cold water branch pipes 511 (530) to be connected to the first, second and third water receiving units 510, 520 and 530 of the second zone 500 521) < / RTI >

The heater cold water supply pipe 323 is branched from the cold water pipe 320 and supplies cold water to the heater 12.

The residual water circulation pipe 324 for circulating and guiding the residual water is bypass-connected to the heater cold water supply pipe 323. The residual water circulation pipe (324) is provided with a residual water circulation pump (370).

It is also possible that the first zone cold water supply pipe 321, the second zone cold water supply pipe 322 and the cold water distribution pipe 21 are separately connected to the external water pipe.

A first flow sensor 23 is installed in the cold water pipe 320.

The heater 312 is a device for introducing and heating cold water from the heater cold water supply pipe 323 and discharging heated hot water. The heater 312 is, for example, a boiler.

The mixed water control valves 330 and 340 mix the cold water flowing into the heater 312 and the hot water heated by the heater 312 to supply mixed water. The mixed water control valves 330 and 340 include a first zone mixing water control valve 330 for supplying mixed water to the first zone 400 and a second zone mixing water control valve 330 for supplying mixed water to the second zone 500 And a second zone mixing water control valve (340). That is, the mixing water control valves 330 and 340 may be installed in a number corresponding to the number of the zones.

The first zone mixing water control valve 330 includes a first cold water inflow pipe 331 connected to the heater cold water supply pipe 323 for introducing cold water and a second cold water inflow pipe 332 connected to the discharge side of the heater 312 to introduce hot water The first hot water inlet pipe 332 is connected to the first hot water inlet pipe 332. The first zone mixing water control valve 330 is connected to the first zone 400 and a first zone mixed water supply pipe 338 described later.

The first zone mixing water supply pipe 338 supplies the mixed water mixed in the first zone mixing water control valve 330 to the first zone 400. The first zone mixed water supply pipe 338 is branched by the number of the water receiving units included in the first zone 400 and connected to the respective water receiving units. The first zone mixing water supply pipe 338 is divided into two first zone mixing water distributing pipes 412 and 422 so as to be described as an example in which two water receiving devices 410 and 420 are provided in this embodiment And is connected to the first and second water receiving units 410 and 420.

The first zone mixing water supply pipe 338 is provided with a first zone recycling opening / closing valve 334 for interrupting the supply of the mixed water to the first zone 400.

The first zone recycling opening / closing valve 334 is opened and closed in response to a signal from the controller 80. That is, the first zone recycling opening / closing valve 334 is normally open and is opened or shielded when the residual water is recirculated.

The first zone mixed water supply pipe 338 is provided with a first temperature sensor 336. The first temperature sensor 336 measures the temperature of the mixed water flowing through the first zone mixed water supply pipe 338. The control unit 80 may control the first zone mixing water control valve 330 according to the temperature sensed by the first temperature sensor 336.

The second zone mixing water control valve 340 includes a second cold water inflow pipe 341 connected to the heater cold water supply pipe 323 for introducing cold water and a second cold water inflow pipe 342 connected to the discharge side of the heater 312, The second hot water inlet pipe 342 is connected. The second zone mixing water control valve 340 is connected to the second zone 500 and a second zone mixing water supply pipe 348 described later.

The second zone mixed water supply pipe 348 supplies mixed water mixed in the second zone mixed water control valve 340 to the second zone 500. The second zone mixed water supply pipe 348 is branched by the number of the water receiving devices included in the second zone 500 and connected to the respective water receiving devices. In the present embodiment, the second zone 500 is exemplified as having three water receiving devices 510, 520 and 530, so that the second zone mixed water supply pipe 348 is divided into three second zones And is connected to the first, second and third water receiving apparatuses 510, 520, and 530. The mixed water pipes 512, 522, and 532 are connected to the first,

The second zone mixed water supply pipe 348 is provided with a second zone recycle opening / closing valve 344 for interrupting the supply of the mixed water to the second zone 500.

The second zone recycling opening / closing valve 344 is opened or closed in response to a signal from the controller 80. That is, the second zone recycling opening / closing valve 344 is normally open and is opened or shielded when the residual water is recirculated.

A second temperature sensor 346 is installed in the second zone mixed water supply pipe 348. The second temperature sensor 346 measures the temperature of the mixed water flowing through the second zone mixed water supply pipe 348. The control unit 80 may control the second zone mixing water control valve 340 according to the temperature sensed by the second temperature sensor 346.

The remaining water circulation pipe includes a first zone remained water circulation pipe (414) 424 and a second zone remnant water circulation pipe (514) 524 (534).

The first zone remained water circulation pipes 414 and 424 are provided in the first zone 400 to recover the remaining water in the first zone mixed water distribution pipes 412 and 422. The first zone remained water circulation pipes 414 and 424 are arranged to connect the first zone cold water distribution pipes 411 and 421 to the first zone mixing water distribution pipes 412 and 422. That is, since the first zone remained water circulation pipes 414 and 424 are installed under the first and second water receiving units 410 and 420, they can be easily installed in existing facilities.

A first residual water circulation valve 416 and a check valve 417 are installed in the first zone remained water circulation pipes 414 and 424, respectively.

The second zone remained water circulation pipes 514, 524 and 534 are provided in the second zone 500 to circulate the remaining water in the second zone mixing water distribution pipes 512, 522 and 532, do. The second zone remained water circulation pipes 514, 524 and 534 are connected to the second zone cold water distributors 511 and 521 and 531 and the second zone mixing water distributors 512 and 522, (532). That is, the second zone remained water circulation pipes 514, 524, and 534 are installed below the third, fourth, and fifth water receiving units 510, 520, and 530, There is an advantage that it is easy to mount.

The second remaining water circulation pipes 514, 524 and 534 are provided with a second residual water circulation valve 516 and a check valve 517, respectively.

Referring to FIGS. 13 and 14, the input units 401 and 501 are devices for inputting a desired operating condition by the user. The input units 401 and 501 include a first zone input unit 401 installed in the first zone 400 and a second zone input unit 501 installed in the second zone 500, do. The input unit 401 and the input unit 401 are installed in the first zone 400 and the second zone 500 as described above. But it is also possible to install them in any one of the second zones 500, and it is of course possible to provide them for each of the water receiving devices of the zones. The input units 401 and 501 may transmit a user input signal to the control unit 80 through wired / wireless communication with the control unit 80. The input units 401 and 501 are remote controllers, for example.

The input units 401 and 501 include a start operation input unit 93 for starting a system or inputting a start operation mode signal for remaining water circulation, a shower operation input unit 94 for inputting a shower operation mode signal, A temperature control unit 92 for controlling the temperature of the mixed water, a selection unit 95 for selecting a function to be input, And an alarm unit (not shown) for informing the user. The startup operation input unit 93 is a switch for turning on the heater 12 or the entire system when it is off, or for starting a startup operation mode when the user needs hot mixing water. The shower operation input unit 94 is a switch that the user inputs when showering. When a signal is input from the shower operation input unit 94, the controller 80 monitors the temperature of the mixed water and the shower time.

The alarm unit (not shown) may be any device capable of notifying an alarm sound or an alarm message.

The control unit 80 selectively opens or closes the first zone recycling opening / closing valve 334 and the second zone recycling opening / closing valve 344 according to a signal input by the user through the input units 401 and 501 It can be shielded.

The first and second zone mixing water control valves 330 and 340 and the first and second zone recycling opening and closing valves 334 and 344 are provided in one unit 14. The unit (14) is provided in the casing (10) and the heater (12). However, the present invention is not limited to this, and it is of course possible to provide the heater 12 separately from the heater 12.

Since the configuration for supplying power to the system is the same as that of the embodiment shown in FIG. 8, the same reference numerals are used and a detailed description thereof will be omitted.

FIG. 10 is a view showing a state in which both the first zone and the second zone are in the normal operation mode in FIG.

Referring to FIG. 10, the first zone 400 and the second zone 500 are in a normal operation mode. If the user does not input the start operation mode signal or the shower operation mode signal separately, it is operated in the normal operation mode state.

In the normal operation mode, the controller 80 stops the operation of the residual water circulation pump 370 and stops the operation of the first residual water circulation valve 416 and the second residual water circulation valve 418 All shielded. Also, the control unit 80 opens both the first zone recycling opening / closing valve 334 and the second zone recycling opening / closing valve 344.

The cold water supplied to the cold water pipe 320 is supplied to the first zone cold water supply pipe 321, the second zone cold water supply pipe 322 and the heater cold water supply pipe 323.

The hot water heated in the heater 312 is mixed with the cold water in the first zone mixing water control valve 330 and the second zone mixing water control valve 340 and mixed with the mixed water having the preset temperature. At this time, according to the temperature of the mixed water detected by the first temperature sensor 336 and the second temperature sensor 346, the first and the second zone mixing water control valves 330, The mixing ratio can be adjusted.

The mixed water mixed in the first zone mixing water control valve 330 is supplied to the first zone 400 through the first zone mixing water supply pipe 338.

The mixed water mixed in the second zone mixing water control valve 340 is supplied to the second zone 500 through the second zone mixing water supply pipe 348.

Fig. 11 is a view showing a state in which a shower operation mode signal is input in the first zone in Fig. 9 and the residual water is circulated when the temperature of the mixed water in the mixed water supply pipe is lower than the set temperature.

Referring to FIG. 11, when the user inputs a shower operation mode signal through the first zone input unit 401 in the first zone 400, the cold / hot water supply system is switched to the shower operation mode.

When the shower operation mode signal is input, the controller 80 controls the residual water circulation pump 370, the first zone recycling opening / closing valve 334, and the second zone recirculation opening / closing valve 334 according to the temperature sensed by the first temperature sensor 336, And controls the operation of the second zone recirculation opening / closing valve 344.

When the shower operation mode signal is input, the controller 80 determines whether the temperature of the mixed water detected by the first temperature sensor 336 is lower than a predetermined set temperature. In the shower operation mode, when the user temporarily closes the water receiving devices for soaping and does not use the mixed water, the mixed water in the first zone mixed water supply pipe 338 remains and the temperature is lowered. Therefore, when the temperature of the mixed water detected by the first temperature sensor 336 is less than a predetermined set temperature, the mixed water remaining in the first zone mixed water supply pipe 338 is recirculated and heated. Here, the set temperature may be set to a temperature that is about 2 to 3 degrees lower than the reference temperature that is set automatically when the user does not have the required temperature set through the first zone input unit 401 or the user's temperature input.

The control unit 80 operates the residual water circulation pump 370 when the temperature of the mixed water detected by the first temperature sensor 336 is less than a predetermined set temperature, 334 are opened, and the second zone recycling opening / closing valve 344 is shielded.

When the residual water circulation pump 370 is operated and the first zone recycling opening and closing valve 334 is opened, the residual water remaining in the first zone mixing water distributing pipes 412 and 422 flows into the first zone And is circulated through the cold water branch pipes 411 and 412 and the first zone cold water supply pipe 321 to the heater cold water supply pipe 323.

 The residual water circulated to the heater cold water supply pipe 323 is supplied to the heater 312 or the first zone mixed water control valve 330.

The residual water flowing into the heater 312 is reheated in the heater 312. At this time, the temperature of the residual water is higher than the temperature of the cold water. Therefore, in the heater 312, the residual water having a higher temperature than the cold water can be heated faster.

The residual water flowing into the first zone mixing water control valve 330 is mixed with the hot water in the first zone mixing water control valve 330. At this time, since the temperature of the residual water is higher than the temperature of the cold water, when the residual water and the hot water are mixed, the temperature of the mixed water may be higher than when mixed with the cold water. Therefore, the temperature of the mixed water can be increased more quickly.

Therefore, when the shower operation mode signal is input, the mixed water of the first zone 400, to which the shower operation mode signal is inputted, is recirculated while the user does not temporarily use the mixed water to soap or the like So that the temperature of the mixed water can always be maintained above the set temperature.

On the other hand, the second zone residual water opening / closing valve 344 is shielded, and the remaining water in the second zone 500 is not circulated. When the shower operation mode signal is inputted only in the first zone 400, the remaining water is circulated only in the first zone 400 and the remaining water is not circulated in the second zone 500. Therefore, unnecessary circulation of the remaining water in the second zone 500 in which the shower operation mode signal is not inputted can be prevented.

On the other hand, if the user opens at least one of the water receiving devices and uses water after the shower operation mode signal is input, the shower operation mode is automatically stopped. That is, the operation of the residual water circulation pump 370 is stopped, and the mixed water is supplied to the water receiving apparatus without circulation.

The control unit 80 stops the operation of the residual water circulation pump 370 when the temperature of the mixed water detected by the first temperature sensor 336 reaches a predetermined set temperature.

When the shower operation mode signal is input, the control unit 80 may interrupt the supply of the external power, terminate the shower operation mode, or terminate the operation of the system. Here, the set time may be basically set to about one hour, and it is of course possible that the set time is adjusted by the user. After the shower operation mode signal is input, if it exceeds the set time, it is determined that the shower is over and the shower operation mode is ended or the operation of the system is automatically terminated. Here, an example will be described by terminating the system. The method of shutting down the system is the same as the method of the above embodiment, and a detailed description thereof will be omitted.

 The user can be informed by the alarm unit (not shown) or the display unit 91 of the remaining water circulation in the shower operation mode by voice, alarm sound, message or the like.

On the other hand, when the user inputs the start operation mode signal in the first zone 400, the residual water circulation pump 370 is operated and the first zone recycle opening / closing valve 334 And the second zone recycling opening / closing valve 344 is shielded, so that only the mixed water of the first zone 400 can be recycled and heated.

FIG. 12 is a diagram showing a state in which a shower operation mode signal is input in the second zone in FIG. 9, and the remaining water is circulated when the temperature of the mixed water in the mixed water supply pipe is lower than the set temperature.

Referring to FIG. 12, when the user inputs a shower operation mode signal through the second zone input unit 501 in the second zone 500, the hot / cold water supply system is switched to the shower operation mode. At this time, the user circulates the remaining water only in the second zone 500 to which the shower operation mode signal is inputted, and the supply of the mixed water to the first zone 400 is stopped.

When the shower operation mode signal is inputted, the controller 80 controls the residual water circulation pump 370, the first zone recycling opening / closing valve 334, and the second zone recirculation opening / closing valve 334 according to the temperature sensed by the second temperature sensor 346, And controls the operation of the second zone recirculation opening / closing valve 344.

When the shower operation mode signal is input, the controller 80 determines whether the temperature of the mixed water detected by the second temperature sensor 346 is lower than a predetermined set temperature. In the shower operation mode, when the user temporarily closes the water receiving devices for soaking or the like and does not use the mixed water, the mixed water in the second zone mixed water supply pipe 348 remains and the temperature is lowered. Therefore, when the temperature of the mixed water detected by the second temperature sensor 346 is less than a predetermined set temperature, the mixed water remaining in the second zone mixed water supply pipe 348 is recirculated and heated. Here, the set temperature may be set to a temperature that is about 2 to 3 degrees lower than the reference temperature that is set automatically when the user does not input the required temperature set by the second zone input unit 501 or the user's temperature.

 The control unit 80 operates the residual water circulation pump 370 when the temperature of the mixed water detected by the second temperature sensor 346 is less than a predetermined set temperature and the second zone recirculation opening / 344 are opened and the first zone recycling opening / closing valve 334 is closed.

When the residual water circulation pump 370 is operated and the second zone recirculation switching valve 344 is opened, the second zone mixing water supply pipe 348 and the second zone mixing water mixing pipes 512 ) 532 is circulated to the heater cold water supply pipe 323 through the second zone cold water distributing pipes 511, 521, 531 and the second zone cold water supply pipe 322.

The residual water circulated to the heater cold water supply pipe 323 is supplied to the heater 312 or the second zone mixed water control valve 340.

The residual water flowing into the heater 312 is reheated in the heater 312. At this time, the temperature of the residual water is higher than the temperature of the cold water. Therefore, in the heater 312, the residual water having a higher temperature than the cold water can be heated faster.

The residual water flowing into the second zone mixing water control valve 340 is mixed with the hot water in the second zone mixing water control valve 340. At this time, since the temperature of the residual water is higher than the temperature of the cold water, when the residual water and the hot water are mixed, the temperature of the mixed water may be higher than when mixed with the cold water. Therefore, the temperature of the mixed water can be increased more quickly.

Therefore, when the shower operation mode signal is input, the mixed water of the second zone 500, to which the shower operation mode signal is inputted, is recirculated while the user does not temporarily use the mixed water to soap or the like So that the temperature of the mixed water can always be maintained above the set temperature.

On the other hand, the first zone residual water opening / closing valve 344 is shielded, and the remaining water in the first zone 400 is not circulated. When the shower operation mode signal is inputted only in the second zone 500, the remaining water is circulated only in the second zone 500, and the remaining water is not circulated in the first zone 400. Therefore, the circulation of the unnecessary remaining water in the first zone 400 in which the shower operation mode signal is not input can be prevented.

On the other hand, if the user opens at least one of the water receiving devices and uses water after the shower operation mode signal is input, the shower operation mode is automatically stopped. That is, the operation of the residual water circulation pump 370 is stopped, and the mixed water is supplied to the water receiving apparatus without circulation.

The control unit 80 stops the operation of the residual water circulation pump 370 when the temperature of the mixed water detected by the second temperature sensor 346 reaches a predetermined set temperature.

When the shower operation mode signal is input, the control unit 80 may interrupt the supply of the external power, terminate the shower operation mode, or terminate the operation of the system. Here, the set time may be basically set to about one hour, and it is of course possible that the set time is adjusted by the user. After the shower operation mode signal is input, if it exceeds the set time, it is determined that the shower is over and the shower operation mode is ended or the operation of the system is automatically terminated. Here, an example will be described by terminating the system.

 The user can be informed by the alarm unit (not shown) or the display unit 91 of the remaining water circulation in the shower operation mode by voice, alarm sound, message or the like.

On the other hand, when the user inputs the start operation mode signal in the second zone 400, the residual water circulation pump 370 is operated and the second zone recycle opening / closing valve 344 And the first zone recycling opening / closing valve 334 is shielded, so that only the mixed water of the second zone 500 can be recycled and heated.

The first zone 400 and the second zone 500 are both in the shower operation mode or the start operation mode.

While the present invention has been described with reference to exemplary embodiments, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims. Accordingly, the true scope of the present invention should be determined by the technical idea of the appended claims.

12,312: heater 20,320: cold water tube
21, 323: heater cold water supply pipe 22: zone cold water supply pipe
30, 330: first zone mixing water control valve 34, 334: first zone recirculation opening / closing valve
36, 336: first temperature sensor 38, 338: first zone mixed water supply pipe
40,340: Second Zone Mixed Water Control Valve
44,344: Second zone recirculation switching valve
46, 346: second temperature sensor 48, 348: second zone recirculation opening / closing valve
50: Residual water circulation pipe 321: First zone cold water supply pipe
322: Zone 2 cold water supply pipe

Claims (10)

At least one water receiving device;
A cold water supply pipe for supplying cold water to the water receiving device;
A heater for introducing the cold water branched from the cold water supply pipe and discharging hot water heated by the cold water supply pipe;
A mixed water control valve for mixing the cold water flowing into the heater and the hot water heated by the heater,
A mixed water supply pipe connecting the mixed water control valve and the water receiving device to supply mixed water mixed in the mixed water control valve to the water receiving device;
A mixed water temperature sensor installed in the mixed water supply pipe and measuring the temperature of the mixed water supplied to the water receiving device through the mixed water supply pipe;
A residual water circulation pipe for guiding the residual water remaining in the mixed water supply pipe to circulate to the heater;
A residual water circulation pump installed in the residual water circulation pipe;
A residual water temperature sensor installed in the residual water circulation pipe for sensing the temperature of the residual water circulating in the heater;
A start operation input unit for applying an external power source and inputting a start operation mode signal for the residual water circulation and a shower operation input unit arranged separately from the start operation input unit and inputting a shower operation mode signal when the user takes a shower ;
And a control unit for controlling the operation of the residual water circulation pump according to a signal input through the input unit,
Wherein the control unit monitors the preset shower time and the temperature of the mixed water in the mixed water supply pipe when the shower operation mode signal is input through the shower operation input unit,
A controller for comparing the temperature of the mixed water sensed by the mixed water temperature sensor with a predetermined set temperature when the water receiving apparatus is closed during the shower time after the shower operation mode signal is inputted, The residual water circulation pump is operated so that the residual water in the mixed water supply pipe is circulated to the heater through the residual water circulation pipe,
Wherein when the water receiving device is opened during the shower time after the shower operation mode signal is inputted, the operation of the residual water circulating pump is stopped and mixed water in the mixed water supply pipe is supplied to the water receiving device, The operation of the residual water circulation pump is controlled according to the temperature of the mixed water by comparing the temperature of the mixed water sensed by the mixed water temperature sensor with the set temperature when the water receiving apparatus is closed again,
And to exit the shower operation mode when the shower time exceeds the shower time after the shower operation mode signal is input. The method according to claim 1,
Wherein,
Wherein when the temperature of the mixed water sensed by the mixed water temperature sensor is equal to or higher than the set temperature at the time of inputting the shower operation mode signal, the residual water circulating pump is stopped, and the remaining water in the mixed water supply pipe is not circulated . The method according to claim 1,
Wherein the control unit stops the operation of the residual water circulation pump and stops the circulation of the remaining water when the temperature sensed by the residual water temperature sensor reaches the set temperature. The method according to claim 1,
Wherein,
Wherein when the shower operation mode signal is input, a supply of the external power is interrupted and the operation is stopped if the predetermined time is exceeded. delete The method according to claim 1,
Wherein the control unit operates the residual water circulation pump to control the residual water in the mixed water supply pipe to circulate to the heater through the residual water circulation pipe when the start operation mode signal is inputted. The method according to claim 1,
When both the startup operation mode signal and the shower operation mode signal are input,
Wherein the controller controls the residual water circulation pump in accordance with the shower operation mode signal. The method according to claim 1,
Wherein,
When the user opens the water receiving apparatus in the start operation mode signal,
And stops the operation of the residual water circulation pump to stop the circulation of the remaining water. The method according to claim 1,
The residual water circulation pipe may include:
And a water supply unit connected to the cold water supply pipe and the mixed water supply pipe at a lower portion of the water receiving unit to circulate the remaining water in the mixed water supply pipe through the cold water supply pipe. The method according to claim 1,
The water receiving devices are provided in at least one zone in a plurality of zones,
The mixed water control valve, the mixed water supply pipe, and the mixed water temperature sensor are each provided with a plurality of zones corresponding to the plurality of zones,
Further comprising a recirculation opening / closing valve provided in each of the plurality of mixed water supply pipes and opened when circulating the remaining water remaining in the mixed water supply pipe,
When the temperature of the mixed water in the mixed water supply pipe connected to the shower operation zone in which the shower operation mode signal is inputted is less than the set temperature when the shower operation mode signal is inputted in a part of the plurality of zones, And circulates only the mixed water remaining in the mixed water supply pipe connected to the shower operation zone.
KR1020130146964A 2013-11-29 2013-11-29 cold and hot water supplying system KR101525097B1 (en)

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KR20170068763A (en) * 2015-12-10 2017-06-20 롯데알미늄 주식회사 Water saving device of instantaneous boiler and method thereof

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JP3153758U (en) * 2009-07-07 2009-09-17 和博 平元 Water heater
KR101073785B1 (en) * 2011-05-12 2011-10-13 이누리 Cold and hot water supplying system
KR20110125895A (en) * 2010-05-14 2011-11-22 이누리 Cold and hot water supplying system
KR20110129749A (en) * 2010-05-26 2011-12-02 이누리 Hot and cold water passive control system

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Publication number Priority date Publication date Assignee Title
JP3153758U (en) * 2009-07-07 2009-09-17 和博 平元 Water heater
KR20110125895A (en) * 2010-05-14 2011-11-22 이누리 Cold and hot water supplying system
KR20110129749A (en) * 2010-05-26 2011-12-02 이누리 Hot and cold water passive control system
KR101073785B1 (en) * 2011-05-12 2011-10-13 이누리 Cold and hot water supplying system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20170068763A (en) * 2015-12-10 2017-06-20 롯데알미늄 주식회사 Water saving device of instantaneous boiler and method thereof
KR101867521B1 (en) * 2015-12-10 2018-06-15 롯데알미늄 주식회사 Water saving device of instantaneous boiler

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