KR101402137B1 - Hot and cold water supply system that can utilize residual water - Google Patents

Abstract

In the present invention, when the residual water removal request information is received from the user input means, the first pump connected to the residual water storage tank is operated to discharge the residual water in the mixed water pipe to the residual water storage tank, The second pump is operated to discharge the residual water stored in the residual water storage tank through the residual water supply pipe for recycling.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hot and cold water supply system,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cold / hot water supply system capable of utilizing residual water, and more particularly, to a cold / hot water supply system capable of storing and utilizing residual water in a mixed water pipe.

Generally, a cold and hot water supply system that supplies cold water and hot water to a demand place such as an apartment, an officetel, a hotel, a residential house, etc. includes a cold water supply pipe for directly supplying cold water to each customer, Hot water is mixed with cold / hot water by the operation of the power receiver handle, and the hot / cold water mixed water faucet is mixed with hot / hot water mixed water faucet It is a system that is discharged through a water pipe.

Referring to FIG. 1, in the conventional system, cold water is supplied from a cold water supply pipe 1 through a generation cold water meter 2 to each of the specified destinations 5, and some of cold water supplied to the cold water supply pipe 1 And heated in the boiler 3 to generate hot water. The high temperature water generated in the boiler 3 is supplied to the respective destination 5 through the mixed water pipe 4.

In such a system, the cold molten stagnant in the pipe must be taken out to discharge the hot water having a temperature suitable for the user's desire, so that the cold mixed water in the pipe is discharged to the sewer without necessity, In order to solve this problem, a water return pipe is installed to recover waste water.

However, when the water piping is installed in an accommodation for an old house, an apartment or a residence, a large-scale remodeling work of the cold / hot water facility for installing the water piping must be performed, which not only requires a high installation cost, There is a problem that the residents have to suffer inconvenience during the construction period to be done and the cost due to the disposal of construction waste generated in the remodeling is generated.

Accordingly, it is necessary to develop a cold / hot water supply system capable of recycling the remaining water remaining in the mixed water pipe without using it without using it.

An object of the present invention is to provide a cold / hot water supply system capable of storing residual water remaining in a mixed water pipe in a separate tank, and utilizing residual water that can be used by reusing residual water if necessary.

The present invention relates to a cold water pipe to which cold water is supplied from the outside; A heating device for supplying cold water through the first cold water branch pipe branched from the cold water pipe and heating the cold water; A mixed water control valve unit for receiving cold water from the hot water supplied from the heating device and the second cold water branch branched from the first cold water distribution pipe to generate mixed water; A mixed water pipe for supplying the mixed water generated by the mixed water control valve unit to a required site; A residual water storage tank connected to the mixed water pipe to store residual water of the mixed water pipe; A residual water supply pipe connecting the residual water storage tank and the cold water pipe to supply residual water; A user input means for requesting removal of the remaining water in the mixed water pipe from a user; And when the residual water removal request information is received from the user input means, the first pump connected to the residual water storage tank is operated to discharge the residual water in the mixed water pipe to the residual water storage tank, And a controller for operating the second pump and discharging the residual water stored in the residual water storage tank through the residual water supply pipe in order to recycle the residual water stored in the residual water storage tank.

According to another aspect of the present invention, there is provided a cold water pipe, comprising: a cold water pipe to which cold water is supplied from the outside; A hot water tube to which hot water is supplied from the outside; A mixed water control valve unit for receiving cold water from the hot water supplied from the hot water pipe and the first cold water pipe branched from the cold water pipe to generate mixed water; A mixed water pipe for supplying the mixed water generated by the mixed water control valve unit to a required site; A residual water storage tank connected to the mixed water pipe to store residual water of the mixed water pipe; A residual water supply pipe connecting the residual water storage tank and the cold water pipe to supply residual water; A user input means for requesting removal of the remaining water in the mixed water pipe from a user; And a first pump connected to the residual water storage tank is operated to discharge residual water in the mixed water pipe to the residual water storage tank when the residual water removal request information is received from the user input means, And a control unit for operating the second pump to discharge the residual water stored in the residual water storage tank for recycling.

The cold / hot water supply system capable of utilizing the residual water according to the present invention includes a residual water storage tank, and when the user desires to use the mixed water, residual water remaining in the mixed water can be discharged to the residual water storage tank and stored . When the mixed water is to be newly generated, the residual water stored in the residual water storage tank can be recycled and used.

1 shows a conventional cold / hot water supply system.
2 is a view illustrating a configuration of a cold / hot water supply system capable of utilizing residual water according to an embodiment of the present invention.
3 is a view illustrating a configuration of a cold / hot water supply system capable of utilizing residual water according to another embodiment of the present invention.
FIG. 4 is a block diagram showing a configuration of a cold / hot water supply system capable of utilizing residual water according to the present invention.

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

FIG. 2 shows a cold / hot water supply system capable of utilizing residual water according to an embodiment of the present invention, and FIG. 3 shows a cold / hot water supply system capable of utilizing residual water according to another embodiment of the present invention. FIG. 2 shows the case where hot water is generated by heating the cold water with a heating device, whereas FIG. 3 shows a case where hot water is directly supplied without a heating device by using a hot water supply device such as a district heating system. 2 and FIG. 3 are the same except for these differences, and therefore, in FIG. 3, the same reference numerals are used for the same components as FIG. 2, and the description will be made with reference to FIG.

2 and 3, the cold / hot water supply system capable of utilizing residual water includes a cold water pipe 10, a heating device 20 or a hot water pipe 200, a mixed water control valve unit 30, A residual water storage tank 50, a residual water supply pipe 60, a user input means 3, and a control unit 5, as shown in FIG.

2, the cold water pipe 10 is supplied with external cold water. The cold water pipe 10 supplies cold water to the heating device 20 to generate high-temperature water in the heating device 20, Can be supplied. The cold water pipe 10 is provided with a first pressure reducing valve 10a, a flow meter 10b and a first check valve 10c. The first pressure reducing valve 10a controls the flow of external cold water flowing into the cold water pipe 10 at a predetermined pressure. The flow meter 10b senses the flow rate of the cold water flowing from the outside, and the first check valve 10c prevents the cold water flowing from the outside from flowing backward.

3, the cold water pipe 10 supplies cold water to the target 1 or the mixed water control valve unit 30 through the first cold water pipe branch 11 branched from the cold water pipe 10, As shown in FIG.

In FIG. 2, the heating device 20 is illustratively provided with a boiler, but is not limited thereto. The heating device 20 heats the cold water flowing through the first cold water pipe branch 11 branched from the cold water pipe 10 to generate hot water and supplies the hot water to the mixed water control valve unit 30 .

3, the mixed water control valve unit 30 is connected to the high temperature water supplied from the district heating system through the high temperature water pipe 200 and the cold water supplied through the first cold water pipe 11, May be used to generate mixed water. Similar to the cold water pipe 10, the hot water pipe 200 is provided with a first pressure reducing valve 201, a flow meter 203 and a first check valve 205, and plays the same role.

Referring to FIGS. 2 and 3, the mixed water control valve unit 30 includes a mixed water control valve (not shown) and a temperature sensor (not shown) in this embodiment. Accordingly, the temperature sensor measures the temperature of the hot water flowing through the heating device 20, and the flow rate of the hot water and the cold water flowing into the mixed water control valve unit 30 can be adjusted. However, the configuration of the mixed water control valve unit 30 as in the present embodiment is merely an example, and the temperature sensor is not provided, and the ratio of the hot water to the cold water according to the temperature is preset in the mixed water control valve, And may be provided in the form of a mixed water control valve unit in which hot water and cold water flow in accordance with the ratio.

The mixed water pipe (40) supplies the mixed water generated from the mixed water control valve unit (30) to the in-generation required place (1). The mixed water pipe 40 is provided with a temperature sensor 41. The temperature sensor 41 detects the temperature of the mixed water flowing through the mixed water pipe 40 or the temperature It is detected whether or not the user set temperature is reached.

The mixed water stored in the mixed water pipe 40 without being supplied to the demanding unit 1 is retained when the water is cooled over time and is stored in the residual water storage tank 50 connected to the mixed water pipe 40. The residual water storage tank 50 stores residual water of the mixed water pipe 40 and supplies residual water when it is desired to use mixed water.

The residual water storage tank 50 may store the remaining water in the mixed water pipe 40 and the mixed water that has been newly generated but has not reached the preset temperature or the user set temperature several times.

The residual water storage tank 50 may be provided in an open type or a closed type. The residual water storage tank (50) is provided with a sensor (50a) which can detect the water pressure or the water level of the stored residual water. When the residual water storage tank 50 is open, the sensor 50a is provided as a water level sensor. When the residual water storage tank 50 is closed, the sensor 50a is connected to the water pressure sensor Respectively. In the following description, the residual water storage tank 50 is open, and the sensor 50a is provided as a water level sensor.

When the residual water storage tank 50 is provided in a closed state, the diaphragm is provided in the residual water storage tank 50 so that the residual water in the residual water storage tank 50 is shrunk as the water is stored, The diaphragm is inflated and the residual water can be discharged.

A first pump (51) is connected between the residual water storage tank (50) and the mixed water pipe (40). The first pump 51 operates the first pump 51 when the residual water in the mixed water pipe 40 is requested to remove the residual water in the mixed water pipe 40 from the residual water storage tank 50).

A second pump (53) is connected to the residual water storage tank (50) on the side opposite to the first pump (51). The second pump 53 may operate the second pump 53 to supply the residual water when the residual water stored in the residual water storage tank 50 is to be used.

The second pump (53) is provided with a residual water supply pipe (60) connected to the first cold water distribution pipe (11). The residual water supply pipe 60 is a pipe through which residual water flows when the residual water stored in the residual water storage tank 50 is supplied by the second pump 53. The remaining water is supplied to the cold water pipe 10 And is supplied to the heating device 20 along the first cold water distributing pipe 11. The heating device 20 is connected to the heating device 20 through the first cold water distributing pipe 11, 2 and 3, the residual water supply pipe 60 is connected to the cold water pipe 10 before a branch point branched from the cold water pipe 10 to the first cold water pipe branch 11.

The residual water supply pipe (60) is provided with a second pressure reducing valve (61) for adjusting the hydraulic pressure of the residual water supplied from the residual water storage tank (50). The second pressure reducing valve (61) allows the residual water supplied from the residual water storage tank (50) to flow at a constant pressure. The pressure of the second pressure-reducing valve 61 is set to be higher than that of the first pressure-reducing valve 10a. This is to allow residual water to be supplied to the residual water storage tank 50 and at the same time to consume the residual water and then use the cold water when the cold water is introduced through the cold water pipe 10.

The residual water flowing through the residual water supply pipe (60) can flow into the cold water pipe (10) and be supplied to the specified destination (1). Therefore, if the pressure of the second pressure reducing valve 61 is lower than that of the first pressure reducing valve 10a, the residual water flowing through the residual water supply pipe 60 can not flow into the cold water pipe 10, And is stagnated in the water supply pipe (60).

The residual water supply pipe (60) is provided with a first electric valve (63). The first electrically operated valve 63 is provided to open or close the first residual water drain pipe 60. When the residual water stored in the residual water storage tank 50 is to be supplied, do.

The residual water storage tank 50 is provided with a drain pipe 80 provided with a second electric valve 81 for discharging the residual water stored in the residual water storage tank 50 to the outside. The residual water stored in the residual water storage tank 50 is supplied to the residual water supply pipe 60 according to the state of the water level sensor 50a and a hydraulic pressure switch 65 to be described later, It is determined whether or not to discharge it to the outside through the pipe 80.

The residual water supply pipe (60) is provided with a hydraulic pressure switch (65) and a second check valve (67). The second check valve 67 functions to prevent the backflow of the residual water by allowing the residual water to flow only in the direction toward the cold water pipe 10. The hydraulic pressure switch 65 is installed in the residual water supply pipe 60 and detects a change in the pressure of the cold water pipe 10 connected to the residual water supply pipe 60.

When the hydraulic pressure switch 65 senses a change in the pressure of the cold water pipe 10 in a state where residual water is stored in the residual water storage tank 50, the level of the residual water in the residual water storage tank 50 The first pump 63 is opened and the second pump 53 is operated to supply the water stored in the residual water storage tank 50 to the residual water supply pipe 60. [

Meanwhile, when the residual water is stored in the residual water storage tank 50 two to three times, the hydraulic switch 65 does not detect a change in the pressure of the cold water pipe 10, The residual water stored in the residual water storage tank 50 is discharged to the outside through the drain pipe 80 by opening the second electric valve 81 when the residual water level in the residual water storage tank 50 is equal to or higher than the set water level, Can be discharged.

The user input means 3 may be provided, for example, as a remote control, and the user may remove residual water in the mixed water pipe 40, To the operation mode.

The control unit 5 operates the first pump 51 to operate the residual water in the mixed water pipe 40 in the start operation mode in which mixed water use request information is received from the user input means 3, And discharged to the water storage tank 50. The residual water stored in the residual water storage tank 50 is supplied to the residual water supply pipe 60 in accordance with a signal sensed by the input switch 71 and the water level sensor 50a, .

The user input means 3 and the control unit 5 may be operated by a method such as wireless communication, for example, RF communication.

Hereinafter, the operation of the cold / hot water supply system capable of utilizing the residual water as described above will be described.

When the user removes the residual water by using the user input means 3 and requests the start operation mode to use the mixed water, the control unit 5 operates the first pump 51 to operate the mixed water pipe 40, The residual water remaining in the residual water storage tank 50 is discharged to the residual water storage tank 50 and stored therein. At this time, when cold water flows into the cold water pipe 10 to generate new mixed water, the oil pressure switch 65 senses a change in oil pressure of the cold water pipe 10 and opens the first electric valve 61 And operates the second pump 53 to supply the residual water stored in the residual water storage tank 50 to the residual water supply pipe 60.

The residual water supplied to the residual water supply pipe 60 flows into the cold water pipe 10 and then is transferred to the heating device 20 and is delivered to the mixed water control valve unit 30 with high temperature water (1) as cold water. At this time, the second pressure reducing valve (63) provided in the residual water supply pipe (60) is set to a pressure greater than that of the first pressure reducing valve (61) installed in the cold water pipe (10) And flows into the cold water pipe (10) through the pipe (60).

The mixed water generated in the mixed water control valve unit 30 is supplied to the required point 1 through the mixed water pipe 40 or flows into the mixed water pipe 40 through a temperature sensor 41 If the temperature of the mixed water is below a preset temperature or a user set temperature, the first pump 51 operates to discharge the newly generated mixed water to the residual water storage tank 50. [

On the other hand, in the normal operation mode in which the use of the mixed water is requested without removing the residual water, the cold water of the cold water pipe 10 flows into the heating device 20 through the first cold water pipe branch 11, And is supplied to the mixed water control valve unit 30 through the second cold water distributing pipe 13 branched from the first cold water distributing pipe 11, The mixed cold water is mixed to produce mixed water.

At this time, when the cold water flows into the cold water pipe 10, the hydraulic pressure switch 65 installed in the residual water supply pipe 60 senses the pressure fluctuation of the cold water pipe 10. When the change in the pressure of the cold water pipe 10 is detected, the first electric valve 61 is opened and the second pump 53 is operated to supply the residual water to the residual water supply pipe 60. The residual water supplied to the residual water supply pipe 60 may be supplied to the cold water pipe 10 to generate hot water or may be supplied to the demanding water 1 as cold water.

After the residual water is stored about two to three times in the residual water supply pipe 60, the user can directly discharge the water through the drain pipe 80 provided in the residual water supply pipe 60.

In the cold / hot water supply system capable of utilizing residual water according to an embodiment of the present invention, when the use of mixed water is requested, the residual water in the mixed water pipe is discharged to the residual water storage tank without discarding, Water can be supplied when it is desired to be produced or can be supplied as cold water to the destination for recycling.

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.

1: Requirements
10: cold water pipe
20: Heating device 30: Mixed water control valve unit
40: Mixed water pipe 50: Residual water storage tank
60: Residual water supply piping
80: drain pipe
200: high temperature water pipe

Claims (8)

A cold water pipe to which cold water is supplied from outside;
A heating device for supplying cold water through the first cold water branch pipe branched from the cold water pipe and heating the cold water;
A mixed water control valve unit for receiving cold water from the hot water supplied from the heating device and the second cold water branch branched from the first cold water distribution pipe to generate mixed water;
A mixed water pipe for supplying the mixed water generated by the mixed water control valve unit to a required site;
A residual water storage tank connected to the mixed water pipe to store residual water of the mixed water pipe;
A residual water supply pipe for supplying residual water stored in the residual water storage tank to the cold water pipe;
A hydraulic pressure switch installed in the residual water supply pipe to sense hydraulic pressure fluctuated by the flow of cold water in the cold water pipe;
A first pressure reducing valve provided in the cold water pipe to adjust the hydraulic pressure of the cold water flowing from the outside to the cold water pipe;
A second pressure reducing valve provided in the residual water supply pipe and having a pressure higher than that of the first pressure reducing valve so that the hydraulic pressure of the residual water discharged from the residual water storage tank to the cold water pipe is higher than the pressure of the cold water of the cold water pipe, ;
A user input means for requesting removal of the remaining water in the mixed water pipe from a user; And
A first pump connected to the residual water storage tank is operated to discharge residual water in the mixed water tank to the residual water storage tank in a start-up operation mode in which request information for removing residual water from the user input means is received, When the hydraulic pressure switch detects a change in the hydraulic pressure of the cold water pipe, the second pump installed in the residual water supply pipe is operated to supply the residual water stored in the residual water storage tank to the cold water pipe through the residual water supply pipe, When the hydraulic pressure switch detects a variation in the hydraulic pressure of the cold water pipe in a normal operation mode in which the residual water is not removed, the second pump is operated to return the residual water stored in the residual water storage tank to the cold water A cold / hot water supply system capable of utilizing residual water including a control unit to supply water to a pipe. A cold water pipe to which cold water is supplied from outside;
A hot water tube to which hot water is supplied from the outside;
A mixed water control valve unit for receiving cold water from the hot water supplied from the hot water pipe and the first cold water pipe branched from the cold water pipe to generate mixed water;
A mixed water pipe for supplying the mixed water generated by the mixed water control valve unit to a required site;
A residual water storage tank connected to the mixed water pipe to store residual water of the mixed water pipe;
A residual water supply pipe for supplying residual water stored in the residual water storage tank to the cold water pipe;
A hydraulic pressure switch installed in the residual water supply pipe to sense hydraulic pressure fluctuated by the flow of cold water in the cold water pipe;
A first pressure reducing valve provided in the cold water pipe to adjust the hydraulic pressure of the cold water flowing from the outside to the cold water pipe;
A second pressure reducing valve provided in the residual water supply pipe and having a pressure higher than that of the first pressure reducing valve so that the hydraulic pressure of the residual water discharged from the residual water storage tank to the cold water pipe is higher than the pressure of the cold water of the cold water pipe, ;
A user input means for requesting removal of the remaining water in the mixed water pipe from a user; And
A first pump connected to the residual water storage tank is operated to discharge residual water in the mixed water tank to the residual water storage tank in a start-up operation mode in which request information for removing residual water from the user input means is received, When the hydraulic pressure switch detects a change in the hydraulic pressure of the cold water pipe, the second pump installed in the residual water supply pipe is operated to supply the residual water stored in the residual water storage tank to the cold water pipe through the residual water supply pipe, When the hydraulic pressure switch detects a variation in the hydraulic pressure of the cold water pipe in a normal operation mode in which the residual water is not removed, the second pump is operated to return the residual water stored in the residual water storage tank to the cold water A cold / hot water supply system capable of utilizing residual water including a control unit to supply water to a pipe. The method according to claim 1 or 2,
In the cold water pipe,
A flow meter for sensing a flow rate of cold water flowing into the cold water pipe; And
A cold / hot water supply system comprising a first check valve for preventing reverse flow of cold water flowing from the outside. The method according to claim 1 or 2,
In the residual water supply pipe,
A first electric valve that is opened when the residual water is discharged from the residual water storage tank; And
And a second check valve for preventing the residual water supplied through the residual water supply pipe from flowing backward without flowing into the cold water pipe,
Wherein the first hydraulic valve is opened when the hydraulic pressure switch senses a variation in the hydraulic pressure of the cold water pipe, and the residual water to which the second pump is operated can be utilized. The method according to claim 1 or 2,
Wherein the residual water storage tank comprises:
A sensor for detecting a water level or a water pressure of the residual water stored in the residual water storage tank; And
And a drain pipe provided with a second electric valve for draining the residual water stored in the residual water storage tank to the outside. The method of claim 5,
Wherein the residual water storage tank is an open type and the sensor is a water level sensor for sensing the level of residual water. The method of claim 5,
The residual water storage tank is closed, the sensor is a pressure sensor for sensing the pressure of the residual water, the residual water storage tank inside which it is urged by the residual water that flows can remain which diaphragm is provided utilizing the available Hot and cold water supply system. The method according to claim 1 or 2,
Wherein the residual water supply pipe is capable of utilizing residual water connected to the first cold water distribution pipe in the cold water pipe.

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