KR20210138221A - Faucet for recirculating hot water and hot/cold water supply system including same - Google Patents

Abstract

The present invention relates to a faucet for recirculation of hot water, and a cold and hot water supply system including the same. The faucet for recirculation of hot water of the present invention comprises: a housing including a hot water flow passage which is in communication with a hot water supply pipe and through which the hot water flows, for supplying hot water generated by heating raw water to a demand, a cold water flow passage which is in communication with a cold water supply pipe and through which the cold water flows, for supplying a cold water, which is the raw water, to a consumer, and an outlet which is in communication with the hot water flow passage and the cold water flow passage and opens to the outside so as to supply at least one of the hot water and the cold water to the consumer; and a recirculation unit including a recirculation passage which communicates the hot water passage and the cold water passage to flow the hot water in the hot water passage to the cold water passage, and an opening and closing member provided to close or open the recirculation passage. An objective of the present invention is to provide the faucet for recirculation of the hot water to provide the hot water at an appropriate temperature, and the cold and hot water supply system including the same.

Description

Faucet for recirculation of hot water and cold and hot water supply system including the same {FAUCET FOR RECIRCULATING HOT WATER AND HOT/COLD WATER SUPPLY SYSTEM INCLUDING SAME}

The present invention relates to a faucet for recirculating hot water for providing hot water at an appropriate temperature, and a cold/hot water supply system including the same.

A boiler is a device that heats water using a heat source and provides it for use in heating or discharges it in the form of hot water. As a heat source of such a boiler, a burner that generates a large amount of heat as a combustion reaction occurs using fuel and oxygen and provides water through a heat exchanger may be used.

When the water heated by the boiler is provided to the consumer in such a way that it is discharged to the outside, in order for the hot water of a preset temperature to be discharged, it is necessary to wait as much as the time for the hot water to reach the demand from the boiler, during which time the direct water is discharged and discarded. do. Therefore, if the customer is far away from the boiler, the direct water is thrown away for a long time, and a long time has to be waited to use the hot water.

Therefore, in order to always supply hot water at a temperature higher than a certain temperature, a hot water recirculation pipe is provided in a new building recently. Through the hot water recirculation pipe, even in a state in which the hot water is not discharged, water corresponding to the hot water circulates and can be continuously heated in the boiler.

However, it is not easy to install such a hot water recirculation pipe or a separate valve due to the limitation of the installation space or the need for the entire pipe construction for the building to be built, and may give aesthetic inconvenience.

In addition, when the user uses hot and cold water, it is not desirable that hot water of high temperature is supplied through the faucet. there is

The present invention has been devised to solve such problems, and to provide a faucet for recirculating hot water in order to provide hot water at an appropriate temperature, and a cold/hot water supply system including the same.

The faucet according to an embodiment of the present invention has a hot water flow path in communication with a hot water supply pipe for supplying hot water generated by heating raw water to a demand place and flowing hot water through the inside, and a cold water supply pipe for supplying cold water, which is raw water, to a demanding place. a housing having a cold water passage in communication with and flowing cold water through the inside, and an outlet in communication with the hot water passage and the cold water passage so as to supply at least one of the hot water and the cold water to a consumer; and a recirculation unit having a recirculation passage communicating the hot water passage and the cold water passage to flow the hot water in the hot water passage to the cold water passage, and an opening/closing member provided to close or open the recirculation passage.

A cold/hot water supply system according to an embodiment of the present invention includes: a boiler configured to form hot water by heating the introduced raw water; a faucet discharging at least one of the hot water and the cold water through an outlet; a hot water supply pipe communicating the faucet and the boiler to supply the hot water to the faucet; a cold water supply pipe provided to communicate the cold water source and the faucet to supply the cold water to the faucet or to allow water returned from the faucet to flow; a recirculation pipe communicating the cold water supply pipe and the boiler so that the returned water flows into the boiler; a pump disposed in the recirculation pipe and pressure-feeding the returned water to the boiler; a flow rate acquisition unit disposed in the boiler to obtain a flow rate of the returned water; and a processor electrically connected to the flow rate acquisition unit and the pump to control the operation of the pump based on the obtained flow rate, wherein the faucet includes a housing communicating with the cold water supply pipe and the hot water supply pipe; a recirculation flow path that indirectly communicates with the hot water supply pipe and the cold water supply pipe so that the hot water introduced into the housing is returned to the cold water supply pipe through the housing to form the returned water, and the obtained flow rate is less than or equal to a predetermined reference flow rate and an opening/closing member provided to close the recirculation flow path to become , or to open the recirculation flow path so that the obtained flow rate is greater than the reference flow rate.

A cold/hot water supply system according to an embodiment of the present invention includes: a boiler configured to form hot water by heating the introduced raw water; a faucet discharging at least one of the hot water and the cold water through an outlet; a hot water supply pipe communicating the faucet and the boiler to supply the hot water to the faucet; a cold water supply pipe provided to communicate the cold water source and the faucet to supply the cold water to the faucet or to allow water returned from the faucet to flow; a recirculation pipe communicating the cold water supply pipe and the boiler so that the returned water flows into the boiler; a pump disposed in the recirculation pipe and pressure-feeding the returned water to the boiler; and a processor electrically connected to the pump to control the operation of the pump, wherein the faucet includes a housing communicating with the cold water supply pipe and the hot water supply pipe, and hot water flowing into the housing is cold water through the housing. and a recirculation passage for indirectly communicating the hot water supply pipe and the cold water supply pipe so as to be returned to the supply pipe to form the returned water.

The faucet according to an embodiment of the present invention has a hot water flow path in communication with a hot water supply pipe for supplying hot water generated by heating raw water to a demand place and flowing hot water through the inside, and a cold water supply pipe for supplying cold water, which is raw water, to a demanding place. a housing having a cold water passage in communication with and flowing cold water through the inside, and an outlet in communication with the hot water passage and the cold water passage so as to supply at least one of the hot water and the cold water to a consumer; and a recirculation passage communicating the hot water passage and the cold water passage so that the hot water in the hot water passage can flow to the cold water passage.

Accordingly, as the hot water is recirculated through the faucet and heated, an appropriate temperature can be reached and provided.

It is possible to form a system in which hot water is recirculated simply by replacing the faucet.

1 is a diagram conceptually illustrating a cold/hot water supply system including a faucet according to a first embodiment of the present invention.
2 is a cross-sectional view conceptually showing a faucet according to a second embodiment of the present invention.
3 is a diagram conceptually illustrating a situation in which hot water flows through a recirculation passage of a faucet according to a second embodiment of the present invention.
4 is a diagram conceptually illustrating a situation in which hot water is blocked from flowing through a recirculation passage of a faucet according to a second embodiment of the present invention.
5 is a cross-sectional view conceptually showing a faucet according to a third embodiment of the present invention.

Hereinafter, some embodiments of the present invention will be described in detail with reference to exemplary drawings. In adding reference numerals to the components of each drawing, it should be noted that the same components are given the same reference numerals as much as possible even though they are indicated on different drawings. In addition, in describing the embodiment of the present invention, if it is determined that a detailed description of a related known configuration or function interferes with the understanding of the embodiment of the present invention, the detailed description thereof will be omitted.

In addition, in describing the components of the embodiment of the present invention, terms such as first, second, A, B, (a), (b), etc. may be used. These terms are only for distinguishing the components from other components, and the essence, order, or order of the components are not limited by the terms. When it is described that a component is “connected”, “coupled” or “connected” to another component, the component may be directly connected or connected to the other component, but another component is between each component. It will be understood that may also be "connected", "coupled" or "connected".

first embodiment

1 is a diagram conceptually illustrating a cold/hot water supply system 100 including a faucet 1 according to a first embodiment of the present invention.

Referring to the drawings, the cold and hot water supply system 100 according to the first embodiment of the present invention includes a power faucet 1, a boiler 60, a cold water supply pipe 42, a hot water supply pipe 41, a recirculation pipe 43, It includes a pump 431 , a recirculation passage 120 , and a processor 61 .

The boiler 60 is a component that forms hot water by heating the introduced raw water, cold water, or returned water. Therefore, the boiler 60 may include a heat exchanger for heating cold water using sensible heat generated through combustion of fuel and latent heat of combustion gas that is a result of combustion. However, if it is a device capable of receiving and heating cold water or returned water to form hot water and then send it out, another device may be disposed and used instead of the boiler 60 .

The boiler 60 may operate based on the temperature of the introduced water or the flow rate of the water, and may heat the introduced water to form hot water and send it out. Accordingly, the operation of the boiler 60 may be controlled by adjusting the flow rate. For this operation, a flow rate acquisition unit (not shown) capable of measuring a flow rate may be disposed in the boiler 60 . Specific details of the control using the flow rate acquisition unit will be described in the description of the second embodiment.

The recirculation pipe 43 communicates with the cold water supply pipe 42 and the boiler 60 , so that cold water, which is raw water transmitted from the cold water supply pipe 42 , or returned water can be introduced into the boiler 60 . Using this cold water or the returned water as raw water, the raw water is heated by the boiler 60 to become hot water and discharged. A hot water supply pipe 41 is connected to the boiler 60 and hot water is discharged through the hot water supply pipe 41 .

The hot water supply pipe 41 communicates with the boiler 60 and the faucet 1 to supply hot water to the faucet 1 . The hot water supply pipe 41 comes out of the boiler 60 and is connected to the faucet 1, or is directly connected to the other faucets 52 through other hot water supply pipes 411 branched from the hot water supply pipe 41, each faucet 1 ) and other faucets 52 can supply hot water.

The cold water supply pipe 42 is a component that is connected to a cold water source and supplies cold water to the boiler 60 or each faucet 1 . One end of the cold water supply pipe 42 is connected to an external cold water source that is a water supply source for supplying cold water, and receives and flows cold water, or other cold water supply pipes 421 branched from the cold water supply pipe 42 through other faucets 52 ) can be directly connected to supply cold water.

The recirculation pipe 43 is connected to the cold water supply pipe 42 and flows cold water from the water source to the boiler 60 or through the recirculation flow path 120 formed in the faucet 1 to be described later, delivered to the cold water supply pipe 42 . It is a component for introducing the returned water into the boiler (60). Therefore, the recirculation pipe 43 may directly or indirectly connect the cold water source and the boiler 60 so that the cold water is transmitted to the boiler 60 . In addition, when the returned water flows in the opposite direction to the direction in which the cold water flows through the cold water supply pipe 42 and reaches the recirculation pipe 43 , it may be introduced into the boiler 60 . That is, the recirculation pipe 43 is a component that delivers water to be raw water to the boiler 60 .

As shown, one end of the recirculation pipe 43 is connected to one location of the cold water supply pipe 42 located upstream from the point where the cold water supply pipe 42 branches based on the direction in which the cold water flows in the cold water supply pipe 42, and , the other end of the recirculation pipe 43 is connected to the boiler (60). Therefore, the returned water flowing in the opposite direction to the direction in which the cold water flows and returning to the one location, and the cold water flowing downstream from the water source and delivered to the one location, can be delivered to the boiler 60 through the recirculation pipe 43. have.

In order for the recirculation pipe 43 to deliver the cold water or the returned water to the boiler 60 in this way, a pump 431 may be disposed in the recirculation pipe 43 . The pump 431 pressurizes the returned water flowing from the recirculation pipe 43 and pumps it to the boiler 60 . Thus, the pump 431 provides the power to circulate the hot water of the entire recirculation system. The pump 431 is used when the hot water is recirculated.

The pump 431 may be electrically connected to the processor 61 and controlled by the processor 61 . A specific situation in which the processor 61 controls the pump 431 will be described later in the description of the processor 61 .

The faucet 1 and other faucets 52 may be devices such as a sink, a sink, and a bathtub that can discharge hot and cold water to the outside to supply the demand, and control the degree of discharging, as shown, but is not limited thereto. does not

The faucet 1 is a component that determines whether to recirculate hot water in the cold/hot water supply system 100 according to an embodiment of the present invention. The faucet 1 is connected to the hot water supply pipe 41 and the cold water supply pipe 42, and a recirculation flow path 120 that forms the returned water by transferring the hot water received from the hot water supply pipe 41 to the cold water supply pipe 42. be prepared Since the faucet 1 includes the recirculation passage 120 , the recirculation of hot water can be achieved only by replacing the faucet 1 . Therefore, the cold and hot water supply system 100 in which the hot water recirculation occurs operates as follows.

Cold water is provided to the cold water supply pipe 42 from the cold water source. A portion of the cold water may be provided to the other faucet 52 through the other cold water supply pipe 421 and discharged to the outside through the faucet 1 . Another portion of the cold water is delivered to the boiler 60 through the recirculation pipe (43).

The boiler 60 heats the cold water to form hot water and sends it out. The hot water may be discharged through the other hot water supply pipe 411 , provided to the other faucet 52 , or discharged to the outside through the faucet 1 . The hot water may be provided to the cold water supply pipe 42 through the recirculation passage 120 of the power faucet 1 , and may be returned in a direction opposite to the direction in which the cold water flows along the cold water supply pipe 42 . In a situation where the hot water is discharged to the outside through the faucet 1, some hot water may be recirculated through the recirculation passage 120 and returned.

The water returned in the reverse direction along the cold water supply pipe 42 flows to the boiler 60 through the recirculation pipe 43 . The returned water is heated again by the boiler 60 to form hot water and discharged through the hot water supply pipe 41 . The faucet 1 can adjust the flow rate of the recirculated hot water while this recirculation process is being performed.

The faucet 1 may include a housing 11 and a recirculation passage 120 . The housing 11 may include a hot water passage 13 , a cold water passage 14 , and an outlet 15 . The structure of the faucet 1 may be modified so that at least one of hot water and cold water is discharged or not discharged through the water outlet 15 that is opened to the outside by being manipulated by the user on the operation part of the housing 11 .

The hot water flow path 13 is communicated with the hot water supply pipe 41 for supplying the hot water to the demand, and means a flow path through which the hot water flows. The cold water flow path 14 is communicated with the cold water supply pipe 42 for supplying the cold water to the demand, and means a flow path through which the cold water flows. The cold water passage 14 and the hot water passage 13 may include a cold inlet 142 and a hot water inlet 132 directly connected to the cold water supply pipe 42 and the hot water supply pipe 41, respectively, and the cold water inlet 142. and a cold water accommodating part 141 and a hot water accommodating part 131 in communication with the hot water inlet 132 to accommodate cold water and hot water, respectively. A cold water outlet 143 and a hot water outlet 133 communicating the cold water receiving unit 141 and the hot water receiving unit 131 with the water outlet 15 may be disposed, respectively. That is, the cold water may be discharged to the outside along the cold water supply pipe 42, the cold inlet 142, the cold water receiving part 141, the cold water outgoing part 143, and the water outlet 15 in this order, and the hot water is in the order of the hot water supply pipe. 41 , the hot water inlet 132 , the hot water receiving unit 131 , the hot water outlet 133 , and the outlet 15 may be discharged to the outside.

The recirculation passage 120 communicates with the hot water passage 13 and the cold water passage 14 to flow the hot water in the hot water passage 13 to the cold water passage 14 . The recirculation passage 120 may communicate with the hot water outlet 133 and the cold water outlet 143 as shown, but the communication location is not limited thereto. The recirculation passage 120 may indirectly communicate with the hot water supply pipe 41 and the cold water supply pipe 42 .

A check valve 121 may be further disposed in the recirculation passage 120 . The check valve 121 allows the hot water to be transferred from the hot water passage 13 to the cold water passage 14 through the recirculation passage 120, but blocks the transfer of cold water from the cold water passage 14 to the hot water passage 13. can A check valve 121 may be disposed on a downstream side of the temperature acquisition unit 123 based on a direction in which hot water flows in the recirculation passage 120 .

The faucet 1 may include a temperature acquisition unit 123 disposed in the recirculation passage 120 . The temperature acquisition unit 123 may be disposed in the recirculation passage 120 to obtain the temperature of the hot water accommodated in the circulation passage. The temperature acquisition unit 123 may be electrically connected to the processor 61 to transmit the acquired temperature in the form of an electrical signal. A recirculation unit 12 including such a temperature acquisition unit 123 and a recirculation passage 120 may be assumed, and a check valve 121 may be included. The temperature acquisition unit 123 may include a thermocouple, a thermistor, an ohmmeter, a semiconductor temperature sensor, etc. to acquire the temperature, but the type of member that may be included to acquire the temperature is not limited thereto.

The processor 61 is electrically connected to the pump 431 and the temperature acquisition unit 123 , and may control the pump 431 based on the temperature obtained by the temperature acquisition unit 123 .

The processor 61 is a component that controls other components included in the cold/hot water supply system 100 . The processor 61 may include a microprocessor such as a Field Programmable Gate Array (FPGA), an Application Specific Integrated Circuit (ASIC), or a Central Processing Unit (CPU), but the type of arithmetic unit included is not limited thereto.

In addition, the cold and hot water supply system 100 may include a memory for storing a plurality of control instructions (instructions) as a basis for generating a command for controlling each component in the processor 61 . The processor 61 may be programmed so that the processor 61 receives a control command from the memory and generates an electrical signal for controlling each component based on the received control command. The memory may be a data store such as a hard disk drive (HDD), a solid state drive (SSD), a volatile medium, a nonvolatile medium, and the like, but the type is not limited thereto.

The processor 61 may be electrically connected to the pump 431 and the temperature acquisition unit 123 as described above. The processor 61 may receive the temperature value obtained by the temperature acquisition unit 123 in the form of an electrical signal, and may supply power to the temperature acquisition unit 123 and the pump 431 or transmit an electrical signal for control. .

The processor 61 operates the pump 431 when the temperature acquired by the temperature acquisition unit 123 is less than a predetermined reference temperature, and the pump 431 stops the operation when the acquired temperature is greater than or equal to the reference temperature. 431) can be controlled.

When hot water less than the reference temperature flows, since the hot water still needs to be adjusted to have an appropriate temperature using recirculation, the processor 61 operates the pump 431 to recirculate through the recirculation passage 120 . However, when hot water above the reference temperature flows, if the recirculation is further made, the hot water may be overheated, and the cold water may be overheated and hot water may be discharged when the cold water is used. In order to stop the recirculation, the processor 61 pumps 431 stop the operation of

By the action of the processor 61, recirculation is made through the faucet 1, but overheating of the hot water may not occur, and the hot water may not be discharged when cold water is used.

second embodiment

2 is a cross-sectional view conceptually showing the faucet 2 according to the second embodiment of the present invention. 3 is a diagram conceptually illustrating a situation in which hot water flows through the recirculation passage 220 of the faucet 2 according to the second embodiment of the present invention. 4 is a diagram conceptually illustrating a situation in which hot water is blocked from flowing through the recirculation passage 220 of the faucet 2 according to the second embodiment of the present invention.

The cold and hot water supply system according to the second embodiment may also include all components other than the faucet 1 included in the cold and hot water supply system 100 in the first embodiment shown in FIG. 1 . Accordingly, since the description of each component of the cold/hot water supply system according to the second embodiment is the same as or similar to that of the first embodiment, only the parts with differences will be further described.

A flow rate acquisition unit (not shown) capable of measuring a flow rate may be disposed in the boiler 60 . The flow rate acquisition unit may be disposed in the boiler 60 to obtain a flow rate of the returned water. The flow acquisition unit may include a venturimeter, a differential pressure flowmeter, a positive displacement flowmeter, a pitot tube, a magnetic flowmeter, a vortex flowmeter, an ultrasonic flowmeter, etc. for acquiring the flow rate of water, but the type of member for acquiring the flow rate is limited to this it doesn't happen

The power faucet 2 according to the second embodiment includes a recirculation passage 220 , but further includes an opening/closing member 221 disposed in the recirculation passage 220 . A recirculation unit 12 may be assumed by bundling the opening/closing member 221 and the recirculation passage 120 , and a check valve 121 may be included.

The opening and closing member 221 is a component capable of opening and closing the recirculation passage 120 . The opening/closing member 221 may close the recirculation flow path 220 so that the flow rate obtained by the flow rate acquisition unit is less than or equal to a predetermined reference flow rate. In addition, the opening/closing member 221 may open the recirculation flow path 220 so that the obtained flow rate is greater than the reference flow rate. The reference flow rate may be 0 LPM.

The opening/closing member 221 may include a bimetal plate that is deformed according to the water temperature of the hot water accommodated in the recirculation passage 120 and adjusts the flow rate of the hot water flowing along the recirculation passage 220 . Bimetal refers to a material whose shape is deformed according to temperature by bonding two metals with different coefficients of thermal expansion to each other.

The bimetal plate is deformed according to the water temperature of the hot water to close or open the recirculation flow path 220, allowing the flow of hot water having a water temperature below the reference temperature, and blocking the flow of hot water having a water temperature above the reference temperature. The reference temperature of the second embodiment may be the same as the reference temperature of the first embodiment, but may be different from each other.

The check valve 223 is disposed on the downstream side of the opening/closing member 221 based on the direction in which the hot water flows in the recirculation passage 220 , and the cold water passage in which hot water is formed in the housing 21 through the recirculation passage 220 . It is allowed to be delivered to (24), but it is possible to block the delivery of cold water to the hot water flow path (23).

The processor 61 may control the pump 431 to operate the pump 431 upon receiving a fantasizing signal from the user. That is, the processor 61 may further include an input unit for receiving a command from the user. The input unit may receive a command from a user including a button or a display device, but may also receive a command indirectly through a terminal of the user including a communication device such as a modem, and the method for receiving a command is not limited thereto. does not

When the recirculation flow path 220 is opened and the fan water signal is input to the processor 61 from the user, the pump 431 starts to operate, so the flow rate acquired by the flow rate acquisition unit may be greater than the reference flow rate.

If the water temperature of the hot water does not exceed the reference temperature, the opening and closing member 221 maintains an open state, so that the hot water can be recirculated. However, if the water temperature of the hot water is higher than the reference temperature, the opening and closing member 221 is deformed to close the recirculation flow path 220, and the flow rate of the returned water obtained by the flow rate acquisition unit may be less than the reference flow rate. Since the obtained flow rate is less than or equal to the reference flow rate, the processor 61 may control the pump 431 to stop operation. In this case, the processor 61 may control the pump 431 to stop operation after a predetermined stop waiting time has elapsed.

The processor 61 may determine whether the flow rate obtained after a predetermined operation standby time elapses, not immediately after the pump 431 starts to operate, is equal to or less than the reference flow rate. At this time, when the obtained flow rate is equal to or less than the reference flow rate, the processor 61 may control the pump 431 to stop the operation of the pump 431 .

When the preheating signal is received from the user, the processor 61 may control the pump 431 to stop the operation after the pump 431 operates for a predetermined operating time. That is, instead of continuously monitoring the flow rate, recirculation and preheating can be performed only for a predetermined period of time. However, even when the preheating signal is input, as described above, it is possible to determine whether to stop the operation of the pump 431 by monitoring the flow rate using the flow rate acquisition unit.

The processor 61 may cause the pump 431 to operate according to a predetermined schedule to cause recirculation and preheating. When a schedule for preheating is input by the user, the processor 61 may control the pump 431 to operate the pump 431 according to the input schedule. The processor 61 may start the operation of the pump 431 according to a predetermined schedule and then stop the operation after a predetermined operating time has elapsed, and use the flow rate acquisition unit even after the operation of the pump 431 starts according to the predetermined schedule. It is also possible to continuously monitor to stop the operation of the pump 431 when the flow rate is less than the reference flow rate.

third embodiment

5 is a cross-sectional view conceptually showing the faucet 3 according to the third embodiment of the present invention.

At least a portion of the recirculation passage 320 included in the recirculation unit 32 according to the third embodiment may be disposed outside the housing 31 of the faucet 3 . 5 shows that the recirculation unit 32 having the same shape as in the first embodiment is disposed, but as in the second embodiment, the recirculation passage of the recirculation unit including the opening and closing member 221 is disposed on the outside of the housing. may be

It may be possible to use the faucet 3 having the recirculation part 32 in a simple way of connecting the faucet 3 to the hot water supply pipe and the cold water supply pipe by forming the faucet 3 of the form shown in FIG. 5 . However, a faucet having a recirculation function may be formed by connecting a kit corresponding to the recirculation unit 32 of FIG. 5 by drilling a hole in the existing faucet.

In the above, even though it has been described that all components constituting the embodiment of the present invention operate by being combined or combined into one, the present invention is not necessarily limited to this embodiment. That is, within the scope of the object of the present invention, all the components may operate by selectively combining one or more. In addition, terms such as "comprises", "comprises" or "have" described above mean that the corresponding component may be inherent, unless otherwise stated, excluding other components. Rather, it should be construed as being able to further include other components. All terms, including technical and scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which the present invention belongs, unless otherwise defined. Terms commonly used, such as those defined in the dictionary, should be interpreted as being consistent with the contextual meaning of the related art, and are not interpreted in an ideal or excessively formal meaning unless explicitly defined in the present invention.

The above description is merely illustrative of the technical spirit of the present invention, and various modifications and variations will be possible without departing from the essential characteristics of the present invention by those skilled in the art to which the present invention pertains. Accordingly, the embodiments disclosed in the present invention are not intended to limit the technical spirit of the present invention, but to explain, and the scope of the technical spirit of the present invention is not limited by these embodiments. The protection scope of the present invention should be construed by the following claims, and all technical ideas within the equivalent range should be construed as being included in the scope of the present invention.

1, 2, 3: Faucet
11, 21, 31: housing
12, 22, 32: recirculation part
13, 23: hot water flow path
14, 24: cold water flow path
15, 25: water outlet
41: hot water supply pipe
42: cold water supply pipe
43: recirculation pipe
52: other faucet
60: boiler
61: processor
100: cold and hot water supply system
120, 220, 320: recirculation flow path
121, 223: check valve
123: temperature acquisition unit
131: hot water receiving part
132: hot water inlet
133: hot water outlet
141: cold water receiving part
142: cold inlet
143: cold water export
221: opening and closing member
411: other hot water supply pipe
421: other cold water supply pipe
431: pump

Claims (17)

The hot water flow path is connected to the hot water supply pipe for supplying the hot water generated by heating raw water to the demand side and the hot water flows through the inside, and the cold water supply pipe is connected to the cold water supply pipe for supplying the raw cold water to the demand side and the cold water flows through the inside. a housing having a cold water passage and an outlet communicating with the hot water passage and the cold water passage to supply at least one of the hot water and the cold water to a consumer; and
A faucet comprising: a recirculation passage communicating the hot water passage and the cold water passage to flow hot water in the hot water passage to the cold water passage; and a recirculation unit having an opening/closing member provided to close or open the recirculation passage. According to claim 1,
The opening/closing member includes a bimetal plate provided in the recirculation passage, deformed according to the water temperature of the hot water accommodated in the recirculation passage, and adjusting the flow rate of the hot water flowing along the recirculation passage, the faucet. 3. The method of claim 2,
The bimetal plate is deformed according to the water temperature of the hot water to close or open the recirculation flow path, allowing the flow of hot water having a water temperature below the reference temperature, and blocking the flow of hot water having a water temperature above the reference temperature, faucet. 3. The method of claim 2,
It is disposed on the downstream side of the opening and closing member based on the direction in which the hot water flows in the recirculation passage, and allows the hot water to be transmitted to the cold water passage through the recirculation passage, but the cold water is transferred to the hot water passage Further comprising a check valve to shut off, the faucet. According to claim 1,
At least a portion of the recirculation passage is disposed outside the housing, the faucet. Boiler for heating the incoming raw water to form hot water;
a faucet discharging at least one of the hot water and the cold water through an outlet;
a hot water supply pipe communicating the faucet and the boiler to supply the hot water to the faucet;
a cold water supply pipe provided to communicate the cold water source and the faucet to supply the cold water to the faucet or to allow water returned from the faucet to flow;
a recirculation pipe communicating the cold water supply pipe and the boiler so that the returned water flows into the boiler;
a pump disposed in the recirculation pipe to pressurize the returned water to the boiler;
a flow rate acquisition unit disposed in the boiler to obtain a flow rate of the returned water; and
A processor electrically connected to the flow rate acquisition unit and the pump to control the operation of the pump based on the obtained flow rate,
The faucet includes a housing communicating with the cold water supply pipe and the hot water supply pipe, and the hot water supply pipe and the cold water supply pipe are indirectly connected so that the hot water flowing into the housing is returned to the cold water supply pipe through the housing to form the returned water. a recirculation flow path communicating with , hot and cold water supply system. 7. The method of claim 6,
The processor, when receiving a fantang signal from the user, controls the pump to operate the pump, cold and hot water supply system. 8. The method of claim 7,
The processor determines whether the obtained flow rate is equal to or less than the reference flow rate after a predetermined operating standby time has elapsed after the pump starts to operate, and when the obtained flow rate is less than or equal to the reference flow rate, the pump stops the operation Controlling the pump to do so, cold and hot water supply system. 7. The method of claim 6,
The processor, upon receiving a preheating signal from the user, controls the pump to stop the operation after the pump operates for a predetermined operating time. 7. The method of claim 6,
The processor determines whether the obtained flow rate is less than or equal to the reference flow rate while the pump is operating, and when the obtained flow rate is less than or equal to the reference flow rate, the pump controls to stop operation after a predetermined stop waiting time, Hot and cold water supply system. 7. The method of claim 6,
The processor, when receiving a schedule for preheating from a user, controls the pump to operate according to the input schedule. Boiler for heating the incoming raw water to form hot water;
a faucet discharging at least one of the hot water and the cold water through an outlet;
a hot water supply pipe communicating the faucet and the boiler to supply the hot water to the faucet;
a cold water supply pipe provided to communicate the cold water source and the faucet to supply the cold water to the faucet or to allow water returned from the faucet to flow;
a recirculation pipe communicating the cold water supply pipe and the boiler so that the returned water flows into the boiler;
a pump disposed in the recirculation pipe and pressure-feeding the returned water to the boiler; and
A processor electrically connected to the pump to control the operation of the pump,
The faucet includes a housing communicating with the cold water supply pipe and the hot water supply pipe, and the hot water supply pipe and the cold water supply pipe are indirectly connected so that the hot water flowing into the housing is returned to the cold water supply pipe through the housing to form the returned water. A cold and hot water supply system comprising a recirculation passage communicating with 13. The method of claim 12,
It is disposed in the recirculation flow path, further comprising a temperature acquisition unit for obtaining the temperature of the hot water accommodated in the recirculation flow path,
The processor is further electrically connected to the temperature acquisition unit, and controls the pump based on the temperature obtained by the temperature acquisition unit. 14. The method of claim 13,
The processor is
The pump is operated when the temperature obtained by the temperature acquisition unit is less than a predetermined reference temperature, and the pump is controlled to stop the operation when the obtained temperature is equal to or greater than the reference temperature. 14. The method of claim 13,
It is disposed on the downstream side of the temperature acquisition unit based on the direction in which the hot water flows in the recirculation flow path, and allows the hot water to be transmitted to the cold water supply pipe through the recirculation flow path, but the cold water is delivered to the hot water supply pipe Which further comprises a check valve to shut off, hot and cold water supply system. 14. The method of claim 13,
The faucet is
A hot water flow path communicating with the hot water supply pipe and flowing hot water through the inside, a cold water flow path communicating with the cold water supply pipe and flowing cold water through the inside, and supplying at least one of the hot water and the cold water to a consumer, the hot water Further comprising a housing having a water outlet communicating with the flow path and the cold water flow path and opening to the outside,
At least a portion of the recirculation passage communicating with the hot water passage and the cold water passage is disposed outside the housing. The hot water flow path is connected to the hot water supply pipe for supplying the hot water generated by heating raw water to the demand side and the hot water flows through the inside, and the cold water supply pipe is connected to the cold water supply pipe for supplying the raw cold water to the demand side and the cold water flows through the inside. a housing having a cold water passage and an outlet communicating with the hot water passage and the cold water passage to supply at least one of the hot water and the cold water to a consumer; and
and a recirculation passage communicating the hot water passage and the cold water passage so that the hot water in the hot water passage can flow to the cold water passage.

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