KR20210050263A - Water saving type hot water circulation system - Google Patents

Abstract

The present invention relates to a water-saving hot water circulation system and, more specifically, to a water-saving hot water circulation system which can adjust water pressure by a pumping unit while hot water is circulated between a boiler and a water valve to maintain a constant temperature to immediately discharge the hot water when the water valve is opened and stably provide the hot water to resolve user inconvenience. The water-saving hot water circulation system comprises: a boiler (12) to heat water supplied by a raw water unit (10); a hot water inlet pipe (15) installed to be connected to the boiler (12) to allow the hot water heated by the boiler (12) to flow thereinto; and a water valve (16) to control discharging of the hot water entering from the hot water inlet pipe (15). The water-saving hot water circulation system further comprises: a pumping unit (20) installed to be connected to the hot water inlet pipe (15) to apply pressure to entering hot water to adjust the water pressure; a circulation pipe (30) branching from the hot water inlet pipe (15) to circulate the hot water; a water discharge pipe (40) installed to be connected to the circulation pipe (30) to discharge the hot water to the outside; and a connection pipe (50) installed to be connected between the circulation pipe (30) and a direct water pipe (11) to discharge the hot water to the direction water pipe (11). Moreover, the hot water circulating through the hot water inlet pipe (15) or the connection pipe (50) is discharged to the outside depending on whether the water valve (16) is opened or closed.

Description

Water saving type hot water circulation system {WATER SAVING TYPE HOT WATER CIRCULATION SYSTEM}

The present invention relates to a water-saving hot water circulation system, and more particularly, as hot water is circulated between a boiler and a water valve to maintain a constant temperature, the water pressure is controlled by a pumping unit, so that when the water valve is opened, hot water is immediately discharged and stable The present invention relates to a water-saving hot water circulation system that can supply hot water by means of a water saving type that can relieve user inconvenience.

In general, hot water discharged through a faucet installed in a shower or sink is supplied through the hot water direct water pipe of the boiler. It always remains, and if hot water is not used for a long time, the water temperature of the water remaining in the hot water direct water pipe gradually decreases.

In particular, when hot water is to be used in winter, the water remaining in the hot water direct water pipe is supplied to the shower from the lowered water, so that the hot water cannot be used immediately.

Therefore, not only water is wasted, but also the inconvenience of waiting a certain time for hot water to be supplied when the boiler is started because it is necessary to send a large amount of cold water as it is until hot water that has been heated by the operation of the boiler. there was.

In addition, although it is hot water that maintains a low water temperature remaining in the hot water direct water pipe, since it has already been heated by using fuel in a boiler, energy is wasted because energy is already consumed.

Conventionally, as described in Patent No. 10-1311352 (registration date: September 16, 2013) to solve this problem, a faucet, a hot water supply pipe for supplying hot water to the faucet, and cold water to the faucet. A cold water supply pipe for supplying, and a mixing pipe for supplying mixed water to the faucet by mixing the hot water supply pipe and the cold water supply pipe, a temperature sensor installed in the mixing pipe, and supplied to the faucet from the mixing pipe. In order to block the mixed water, a valve installed between the faucet and the temperature sensor, a circulation pipe connected between the hot water supply pipe and the cold water supply pipe, a pump installed in the circulation pipe, and supplied to the cold water supply pipe. A hot water supply device for preventing water waste, characterized in that the direct water comprises a hot water heat exchanger located in a boiler that is heated and supplied by the hot water supply pipe, the valve, the temperature sensor, and a control unit for controlling the pump.

However, the conventional hot water supply device for preventing water waste can prevent water from being wasted by circulating water by operating the boiler while maintaining the valve closed even if the opening/closing valve is opened when the water is lower than the set temperature. There is a problem in that time is wasted unnecessarily because time is required until water is circulated.

The present invention has been proposed to solve the above-described problem, and an object of the present invention is to ensure that hot water having a temperature set by the user between the boiler and the water valve is circulated while maintaining a constant temperature, so that hot water is immediately discharged when the water valve is opened. It is intended to provide a water-saving hot water circulation system that can prevent the wastage of water as well as can solve the user's discomfort.

In addition, it is to provide a water-saving hot water circulation system capable of controlling the water pressure by applying pressure to the hot water by a pumping unit so that the hot water can be discharged to the outside.

The problems to be solved by the present invention are not limited to the problems mentioned above, and other problems that are not mentioned will be clearly understood by those skilled in the art from the following description.

The water-saving hot water circulation system according to the present invention for achieving the above object is installed to be connected to a boiler 12 for heating water supplied from the raw water unit 10, and the boiler 12. In the hot water circulation system comprising a hot water inlet pipe 15 for introducing the hot water heated by ), and a water valve 16 for controlling the outlet water of the hot water introduced from the hot water inlet pipe 15, the hot water A pumping unit 20 installed to be connected to the inlet pipe 15 to adjust the water pressure by applying pressure to the introduced hot water, and a circulation pipe 30 branched from the hot water inlet pipe 15 to circulate the hot water, and , It is installed to be connected to the circulation pipe 30 and is installed to be connected between the water outlet pipe 40 for discharging hot water to the outside, and the direct water pipe 11 to be connected between the circulation pipe 30 and the direct water pipe 11 It includes a connection pipe 50 for discharging hot water, and the hot water circulating through the hot water inlet pipe 15 to the connection pipe 50 is discharged to the outside according to whether the water valve 16 is opened or closed. It is characterized.

In addition, the pumping unit 20, a circulation drive pipe 21 installed to be connected to the hot water inlet pipe 15, and the circulation drive pipe 21 installed inside the circulation drive pipe 21 A circulation pump 22 for discharging the introduced hot water according to a pressure action, and the end of the hot water discharged from which the hot water is discharged while being connected between the circulation drive pipe 21 and the water valve 16, is the water discharge pipe. A double pipe 25 installed on the inside of 40 and through which hot water pressured by the circulation pump 22 flows, and a solenoid valve installed in the double pipe 25 to control the circulation pump It characterized in that it consists of (24).

As described above, according to the present invention, hot water having a temperature set by the user between the boiler and the water valve is circulated while maintaining a constant temperature so that hot water is immediately discharged when the water valve is opened, thereby reducing the consumption of water and energy Indirect costs such as water production costs, water supply and sewage costs can be reduced, as well as greenhouse gases.

In addition, by applying pressure to the hot water by the pumping unit so that the hot water can be discharged to the outside, the water pressure can be adjusted and the hot water can be stably discharged, thereby improving user satisfaction.

1 is a cross-sectional view schematically showing a hot water circulation state of a water-saving hot water circulation system according to an embodiment of the present invention;
2 is a cross-sectional view showing an open state of some water valves in the water-saving hot water circulation system according to an embodiment of the present invention;
3 is a cross-sectional view showing a state in which a plurality of water valves are all open in the water-saving hot water circulation system according to an embodiment of the present invention;
4 is a cross-sectional view showing a state in which a plurality of heating valves are all open in the water-saving hot water circulation system according to an embodiment of the present invention;
5 is a block diagram showing a connection state of a control unit in a water-saving hot water circulation system according to an embodiment of the present invention.
6 is a cross-sectional view showing a hot water heating device of a water-saving hot water circulation system according to another embodiment of the present invention.

Hereinafter, a water-saving hot water circulation system according to the present invention will be described in detail with reference to the accompanying drawings. Prior to this, in describing the present invention, if it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the subject matter of the present invention, a detailed description thereof will be omitted.

In addition, terms to be described later are terms set in consideration of functions in the present invention, and these terms may vary according to the intention or custom of the producer or manufacturer producing the product, and the thickness of the lines or the size of the components shown in the drawings. And the like may be exaggerated for clarity and convenience of description, and the embodiments described in the present specification and the configurations shown in the drawings are only the most preferred embodiment of the present invention, and do not represent all the technical ideas of the present invention. As such, it should be understood that there may be various equivalents and modified examples that can replace them at the time of the present application.

In addition, when a part of the specification is said to be'connected' with another part, this includes not only the case that it is'directly connected', but also the case that it is'indirectly connected' with another element in the middle. do. In addition, "including" a certain component means that other components may be further included rather than excluding other components unless otherwise stated.

In addition, the directional terminology used in the present invention is used in connection with the orientation of the disclosed drawing(s). Since components of the embodiments of the present invention can be positioned in various orientations, the directional terminology is used for illustrative purposes and is not limiting.

1 is a cross-sectional view schematically showing a hot water circulation state of a water-saving hot water circulation system according to an embodiment of the present invention, and FIG. 2 is a state in which some water valves are opened in the water-saving hot water circulation system according to an embodiment of the present invention. 3 is a cross-sectional view showing a state in which a plurality of water valves are all open in the water-saving hot water circulation system according to an embodiment of the present invention.

4 is a cross-sectional view showing a state in which a plurality of heating valves are all open in the water-saving hot water circulation system according to an embodiment of the present invention, and FIG. 5 is a control unit in the water-saving hot water circulation system according to an embodiment of the present invention. Fig. 6 is a block diagram showing a connection state of, and Fig. 6 is a cross-sectional view showing a hot water heating device of a water-saving hot water circulation system according to another embodiment of the present invention.

As shown in FIGS. 1 to 5, the water-saving hot water circulation system according to the present invention is installed to be connected to a boiler 12 for heating water supplied from the raw water unit 10, and to the boiler 12. In the hot water circulation system comprising a hot water inlet pipe 15 for introducing the hot water heated by the boiler 12, and a water valve 16 for controlling the outlet water of the hot water introduced from the hot water inlet pipe 15 , A pumping unit 20 installed to be connected to the hot water inlet pipe 15 to adjust the water pressure by applying pressure to the introduced hot water, and a circulation pipe branched from the hot water inlet pipe 15 to circulate the hot water ( 30), and a water outlet pipe 40 installed to be connected to the circulation pipe 30 to discharge hot water to the outside, and the direct water pipe installed to be connected between the circulation pipe 30 and the direct water pipe 11 It may be configured to include a connection pipe 50 for discharging hot water to (11).

The boiler 12 is installed to be connected to the end of the direct water pipe 11 for supplying water flowing from the raw water part 10, and the water supplied from the raw water part 10 through the direct water pipe 11 is It is provided to supply hot water by heat exchange through a heat exchanger installed inside the casing.

At this time, the boiler 12 may use gas, oil, electricity, and coal as fuel.

In addition, it would be desirable to connect a separate cold water pipe (not shown) to the water valve 16.

Meanwhile, in the direct water pipe 11, the hot water flowing into the connection pipe 50 to be described later flows to the boiler 12 through the direct water pipe 11 and flows to the raw water part 10 so that it can be circulated. A check valve 70 is installed to prevent it.

In addition, it would be desirable to supply raw water to the inside of the boiler 12 only when necessary in the direct water pipe 11.

The hot water discharged from the boiler 12 flows into the hot water inlet pipe 15. The hot water inlet pipe 15 is connected to the boiler 12 so that the hot water heated in the boiler 12 flows into the hot water. Is connected to the heating unit 17 so that it can flow to the heating unit 17.

Here, the check valve 70 is installed in the hot water inlet pipe 15 to prevent the hot water discharged from the boiler 12 from flowing back to the boiler 12, and the hot water is transferred to the heating unit 17. A heating valve 71 is installed to control the flow.

The pumping unit 20 includes a circulation drive pipe 21 installed to be connected to the hot water inlet pipe 15, and a circulation drive pipe 21 installed inside the circulation drive pipe 21 to flow into the circulation drive pipe 21. A circulation pump 22 for discharging hot water according to a pressure action, and an end to which hot water is discharged while being installed to be connected between the circulation drive pipe 21 and the water valve 16, is inside the water outlet pipe 40. It includes a double pipe 25 for flowing hot water that is installed and pressurized by the circulation pump 22, and a solenoid valve 24 installed in the double pipe 25 to control the circulation pump 22. It can be configured.

At this time, a pressure measurement sensor 60 is installed inside the circulation drive pipe 21.

The circulation pump 22 receives the pressure of the hot water from the circulation drive pipe 21 according to the determination of the pressure measurement sensor 60 installed in the circulation drive pipe 21 and the water outlet pipe 40 to be described later. It is to be able to be discharged to the outside through the double pipe (25).

Here, the circulation pump 22 is described as being installed in the circulation drive pipe 21, but is not limited thereto, and may be installed in the double pipe 25, respectively.

As described above, according to the determination of the pressure measuring sensor 60, the hot water flowing into the double pipe 25 receives pressure so that the hot water can be discharged to the outside.

In addition, it is possible to control the water pressure by operating at least one circulation pump 22 of the circulation pump 22 installed in the double pipe (25).

The double pipe 25 is a pipe connected between the circulation drive pipe 21 and the water valve 16, and is a passage through which hot water pressured by the circulation pump 22 flows to the water valve 16. .

The solenoid valve 24 is installed in the double pipe 25, respectively.

At this time, the solenoid valve 24 is opened and closed according to the water pressure measured by the pressure measuring sensor 60.

That is, when the water pressure measured by the pressure measurement sensor 60 is equal to or exceeds the preset normal water pressure, current is not supplied to the solenoid coil and the solenoid valve 24 is closed, and the circulation pump 22 is operated. When the water pressure measured by the pressure measuring sensor 60 is less than the preset normal water pressure, current is supplied to the solenoid coil to open the solenoid valve 24 to operate the circulation pump 22.

Here, when both the first water valve 13 and the second water valve 14 of the water valve 16 are open, the pressure measurement sensor 60 determines the water pressure to be less than a preset normal water pressure, and the solenoid coil Current is supplied to the solenoid valve 24 to open the circulation pump 22 to operate, so that the hot water in the circulation drive pipe 21 receives pressure by the circulation pump 22 and the double pipe 25 ), it is possible to exit to the outside.

At this time, when only one of the first water supply valve 13 and the second water supply valve 14 of the water valve 16 is opened, it is determined that the measured water pressure is equal to or exceeds the preset normal water pressure, and the solenoid valve 24 ) Is closed so that the circulation pump 22 is not operated. Here, even if the circulation pump 22 is not operated, hot water may be discharged to the outside through the double pipe 25 at a normal water pressure.

The circulation pipe 30 is installed to be branched to the hot water inlet pipe 15, and the circulation pipe 30 is installed to connect a plurality of water outlet pipes 40 to be described later.

The water outlet pipe 40 is installed to be connected to the circulation pipe 30 and to be connected to the water valve 16.

At this time, the double pipe 25 and the pressure measuring sensor 60 are installed inside the water outlet pipe 40.

The connection pipe 50 is installed to be connected between the circulation pipe 30 and the direct water pipe 11 so that the hot water in the circulation pipe 30 can flow to the direct water pipe 11.

In addition, the check valve 70 is installed in the connection pipe 50 to prevent reverse flow of hot water flowing from the connection pipe 50 to the direct water pipe 11, and flows into the connection pipe 50. A heating valve 71 is installed to control the flow of the hot water to the heating unit 17.

In the case of using the water-saving hot water circulation system according to the present invention, a separate controller 80 may be installed to control the driving of the boiler 12 and the circulation pump 22, and the circulation drive pipe 21 ) And the pressure measurement sensor 60 installed in the water outlet pipe 40 so that the circulation pump 22 and the solenoid valve 24 operate according to the detected signal.

Here, when the hot water heated in the boiler 12 flows through the hot water inlet pipe 15 and circulates through the pipe, when the hot water is discharged to the outside when the water valve 16 is opened, the pressure measurement sensor 60 The pressure is measured and a signal is transmitted to the controller 80.

That is, when the pressure measurement sensor 60 determines that the water pressure is less than the preset normal water pressure, the control unit 80 sends an electrical signal to the solenoid coil to open the solenoid valve 24 and the circulation pump 22 By allowing the pumping unit 20 to operate, the hot water that has been pressurized through the double pipe 25 of the pumping unit 20 can be discharged to the outside.

In addition, a temperature sensor 70 that detects the temperature of water is installed in the circulation drive pipe 21 to detect when the hot water circulating in the pipe falls below the temperature set by the user, and the controller 80 detects the hot water. It can be configured so that the water can be discharged to the outside so that the user can use it by raising the temperature above the set temperature.

Looking at the circulation state of the water-saving hot water circulation system according to the present invention configured as described above, the hot water heated by the boiler 12 flows into the hot water inlet pipe 15, and the introduced hot water is the circulation pipe 30 And flows into the inside of the circulation drive pipe 21 of the pumping part 20.

When the water valve 16 and the heating valve 17 are closed, the hot water flowing into the circulation pipe 30 flows into the connection pipe 50 to circulate, and the water valve 16 When it is open, when hot water is discharged to the outside through the water outlet pipe 40 and the pressure measurement sensor 60 determines that the water pressure is less than the preset normal water pressure, the circulation drive pipe 21 of the pumping unit 20 The hot water flowed to) is pressured by the circulation pump 22 to be discharged to the outside through the double pipe 25 of the pumping unit 20.

At this time, when the water pressure is measured by the pressure measurement sensor 60 installed inside the circulation drive pipe 21 of the pumping unit 20 and the water outlet pipe 40, the water pressure is determined to be less than a preset normal water pressure. The received signal is transmitted to the control unit 80, and the solenoid valve 24 is opened by the transmitted signal to operate the circulation pump 22.

In addition, the temperature sensor 70 installed inside the circulation drive pipe 21 of the pumping unit 20 measures the temperature of hot water and transmits the received signal to the control unit 80, and When the temperature of the hot water is less than the temperature set by the user, the control unit 80 transmits a signal to the boiler 12 to raise the set temperature.

On the other hand, when the heating valve 17 is open, the hot water flowing through the hot water inlet pipe 15 flows to the heating unit 17 and is circulated through the connection pipe 50.

Here, a separate pumping member for pumping hot water circulating for circulation of the heating unit 17 may be installed.

On the other hand, a hot water heating device 19 may be installed at the end of any one double pipe 25 of the plurality of double pipes 25 installed inside the water outlet pipe 40.

That is, the hot water heating device 19 allows the room to be heated by heat generated while the hot water discharged from the boiler 12 circulates through a pipe. When the first water supply valve 13 is opened, The hot water flowing through the water outlet pipe 40 and the hot water flowing through the double pipe 25 under pressure by the operation of the circulation pump 22 flow into the hot water heating device 19, thereby heating the room. It becomes.

As described above, in the water-saving hot water circulation system according to the present invention, when hot water having a temperature set by the user between the boiler 12 and the water valve 16 is circulated while maintaining a constant temperature, the water valve 16 is opened. , By allowing the user to use hot water immediately, not only can the user's discomfort be solved, but also water and energy can be prevented from wasting.

In addition, by applying pressure to the hot water by the pumping unit 20, the hot water can be discharged to the outside through the double pipe 25, so that the water pressure can be adjusted, thereby improving user satisfaction.

As described above, specific embodiments of the present invention have been described in detail, but those of ordinary skill in the field to which the present invention pertains will be able to implement various modifications without departing from the scope of the present invention. Therefore, the scope of the present invention is not limited to the above-described embodiments, and should be defined by not only the claims to be described later, but also the claims and equivalents.

10: Marshal Department 11: direct water pipe
12: boiler 13: first water valve
14: second water supply valve 15: hot water inlet pipe
16: water valve 17: heating part
19: hot water heating device 20: pumping unit
21: circulation drive pipe 22: circulation pump
24:: solenoid valve 25: double piping
30: circulation pipe 40: water outlet pipe
50: connection pipe 60: pressure measuring sensor
70: check valve 71: heating valve
80: control unit 90: temperature sensor

Claims (2)

A boiler 12 for heating the water supplied from the raw water unit 10, a hot water inlet pipe 15 installed to be connected to the boiler 12 and through which the hot water heated by the boiler 12 flows in, In the hot water circulation system comprising a water valve (16) for controlling the discharge water of the hot water introduced from the hot water inlet pipe (15),
A pumping unit 20 installed to be connected to the hot water inlet pipe 15 to adjust the water pressure by applying pressure to the introduced hot water, and a circulation pipe 30 branching from the hot water inlet pipe 15 to circulate the hot water. ), and a water outlet pipe 40 installed to be connected to the circulation pipe 30 to discharge hot water to the outside, and the direct water pipe ( A connection pipe 50 for discharging hot water is included in 11), and hot water circulating through the hot water inlet pipe 15 to the connection pipe 50 is discharged to the outside depending on whether the water valve 16 is opened or closed. Water-saving hot water circulation system.
The method according to claim 1,
The pumping unit 20 includes a circulation drive pipe 21 installed to be connected to the hot water inlet pipe 15, and a circulation drive pipe 21 installed inside the circulation drive pipe 21 to flow into the circulation drive pipe 21. A circulation pump 22 for discharging hot water according to a pressure action, and an end to which hot water from which hot water is discharged is installed to be connected between the circulation drive pipe 21 and the water valve 16, and the water discharge pipe 40 ), a double pipe 25 for flowing hot water pressured by the circulation pump 22, and a solenoid valve installed in the double pipe 25 to control the circulation pump 22 ( 24), characterized in that the water-saving hot water circulation system.

Images