CN106369807A - Zero-cold-water gas water heater and system thereof - Google Patents
Zero-cold-water gas water heater and system thereof Download PDFInfo
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- CN106369807A CN106369807A CN201610917603.7A CN201610917603A CN106369807A CN 106369807 A CN106369807 A CN 106369807A CN 201610917603 A CN201610917603 A CN 201610917603A CN 106369807 A CN106369807 A CN 106369807A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 1181
- 239000008399 tap water Substances 0.000 claims description 151
- 235000020679 tap water Nutrition 0.000 claims description 151
- 230000002035 prolonged effect Effects 0.000 abstract description 7
- 238000010438 heat treatment Methods 0.000 description 45
- 238000010586 diagram Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 4
- 238000003287 bathing Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 230000005611 electricity Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/20—Arrangement or mounting of control or safety devices
- F24H9/2007—Arrangement or mounting of control or safety devices for water heaters
- F24H9/2035—Arrangement or mounting of control or safety devices for water heaters using fluid fuel
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
- F24H1/10—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium
- F24H1/12—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium in which the water is kept separate from the heating medium
- F24H1/124—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium in which the water is kept separate from the heating medium using fluid fuel
- F24H1/125—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium in which the water is kept separate from the heating medium using fluid fuel combined with storage tank
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H15/00—Control of fluid heaters
- F24H15/20—Control of fluid heaters characterised by control inputs
- F24H15/212—Temperature of the water
- F24H15/219—Temperature of the water after heating
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H15/00—Control of fluid heaters
- F24H15/20—Control of fluid heaters characterised by control inputs
- F24H15/238—Flow rate
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H15/00—Control of fluid heaters
- F24H15/30—Control of fluid heaters characterised by control outputs; characterised by the components to be controlled
- F24H15/335—Control of pumps, e.g. on-off control
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/12—Arrangements for connecting heaters to circulation pipes
- F24H9/13—Arrangements for connecting heaters to circulation pipes for water heaters
- F24H9/139—Continuous flow heaters
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H15/00—Control of fluid heaters
- F24H15/30—Control of fluid heaters characterised by control outputs; characterised by the components to be controlled
- F24H15/305—Control of valves
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fluid Mechanics (AREA)
- Domestic Hot-Water Supply Systems And Details Of Heating Systems (AREA)
Abstract
The invention discloses a zero-cold-water gas water heater which comprises a circulation water pump, a water pump water inlet pipe, a water pump water outlet pipe, a cold water pipe, a cold water inlet nozzle, a hot water outlet nozzle, a heat exchanger, a first one-way valve, a controller, a first water flow sensor and a second water flow sensor. The cold water inlet nozzle, the cold water pipe and the heat exchanger communicate with the hot water outlet nozzle in sequence. The water pump water inlet pipe is connected with the water pump water outlet pipe through the circulation water pump, the water pump water outlet pipe is connected with the cold water pipe, and a first water pipe joint is formed at the connecting position. The first water flow sensor is installed at the position of the water pump water inlet pipe or the water pump water outlet pipe. The second water flow sensor and the first one-way valve are installed at the position of a section, between the first water pipe joint and the cold water inlet nozzle, of the cold water pipe. The circulation water pump, the first water flow sensor and the second water flow sensor are electrically connected with the controller. According to the zero-cold-water gas water heater, water utilization of a user can be correctly judged, good user experience is achieved, electric energy can be saved, and the service life of the water pump can be prolonged.
Description
Technical Field
The invention relates to the technical field of gas appliances, in particular to a zero-cold-water gas water heater and a system thereof.
Background
In order to solve the defect that a water consumption point of a gas water heater can firstly flow out of tap water when the gas water heater is used, the zero-cold-water gas water heater comprises a water circulation heating pipeline formed by a circulating water pump, a water return pipe and the like, wherein one end of the water circulation heating pipeline is connected with a cold water inlet pipe connected with a heat exchanger, and the other end of the water circulation heating pipeline is connected with a hot water outlet pipe of the gas water heater connected with the water consumption point. The working principle is as follows: when the temperature of water in the hot water outlet pipe is lower than the preset temperature, the circulating water pump starts to work, cold water in the hot water outlet pipe flows back to the cold water inlet pipe through the water return pipe, and enters the heat exchanger through the cold water inlet pipe to be heated, so that preheating of the cold water in the hot water outlet pipe can be realized, and water used by a user at a water using point is preheated. In addition, current zero cold water gas heater still including locating water flow sensor in the cold water pipe, when the user is at normal water use in-process, there is water to flow in the cold water pipe, at this moment water flow sensor can change the velocity of flow of rivers into the signal of telecommunication and send the signal of telecommunication to the controller of being connected with water flow sensor electricity, then the controller can judge that there is water to flow in the cold water pipe, shows that the user is using water, and at this moment the controller can control zero cold water gas heater's heating work to send the water after the heating to the user and use the water point, thereby make the user can normally use water.
However, the circulating heating pipeline of the current zero-cold-water gas water heater is communicated with the cold water inlet pipe, and the water flow sensor is arranged in a section of the cold water inlet pipe between the communication position of the circulating heating pipeline and the cold water inlet pipe and the heat exchanger, so that the circulating heating pipeline and the cold water inlet pipe share one water flow sensor; when a user uses water for a bathroom, the cold water inlet pipe can also flow water, and the water flow sensor can also generate a water flow signal; therefore, the controller is difficult to accurately judge whether the water of the cold water pipe flows due to the fact that the user uses water for a bathroom or heats the water in a circulating way, so that the zero-cold-water gas water heater can possibly heat the water in a circulating way when the user needs the water, and the user cannot normally use the water (because the water using point and the water pressure in the pipeline are not stable enough when the zero-cold-water gas water heater heats the water in a circulating way in the water using process of the user, and meanwhile, because the water pressure in the pipeline is unstable, the control program of the zero-cold-water gas water heater is complex, the program operation is easy to make mistakes, the work of the water heater is unstable), and the use experience of the user is influenced; and the user can waste the electric energy when still working with water pump, has also influenced the working life of water pump simultaneously.
Disclosure of Invention
In view of the above problems, an object of the present invention is to provide a zero-cold-water gas water heater and a zero-cold-water gas water heater system, which can correctly determine the water consumption condition of a user, thereby providing good user experience, saving electric energy, and prolonging the service life of a water pump.
In order to achieve the aim, the invention provides a zero-cold-water gas water heater which comprises a circulating water pump, a water pump water inlet pipe, a water pump water outlet pipe, a cold water inlet nozzle, a hot water outlet nozzle, a heat exchanger, a first one-way valve, a controller, a first water flow sensor and a second water flow sensor, wherein the circulating water pump is connected with the water pump water inlet pipe; the cold water pipe is connected with the cold water inlet nozzle and is connected with the water inlet end of the heat exchanger; the water outlet end of the heat exchanger is communicated with the hot water outlet nozzle; the first end of the water inlet pipe of the water pump is communicated with the hot water outlet nozzle, and the second end of the water inlet pipe of the water pump is connected with the water inlet end of the circulating water pump; the first end of the water pump water outlet pipe is connected with the water outlet end of the circulating water pump, and the second end of the water pump water outlet pipe is connected with the cold water pipe to form a first water pipe node; the first water flow sensor is arranged at the water inlet pipe of the water pump or the water outlet pipe of the water pump, and the second water flow sensor and the first one-way valve are both arranged at a section of cold water pipe between the first water pipe node and the cold water inlet nozzle; an inlet of the first one-way valve is communicated with the cold water inlet nozzle, and an outlet of the first one-way valve is communicated with the first water pipe node; the circulating water pump, the first water flow sensor and the second water flow sensor are all electrically connected with the controller.
Preferably, the zero-cold-water gas water heater further comprises a third one-way valve; the third one-way valve is arranged at the water outlet pipe of the water pump, the inlet of the third one-way valve is communicated with the first end of the water outlet pipe of the water pump, and the outlet of the third one-way valve is communicated with the second end of the water outlet pipe of the water pump; or, the third check valve is installed water pump inlet tube department, just the entry of third check valve with the first end intercommunication of water pump inlet tube, the export of third check valve with the second end intercommunication of water pump inlet tube.
Preferably, the zero-cold-water gas water heater further comprises a hot water storage tank, wherein a water inlet end of the hot water storage tank is communicated with a water outlet end of the heat exchanger, and a water outlet end of the hot water storage tank is communicated with the hot water outlet nozzle.
Preferably, the zero-cold-water gas water heater further comprises a water return nozzle communicated with the hot water outlet nozzle, and the water return nozzle is connected with the first end of the water inlet pipe of the water pump.
The invention also provides a first zero-cold-water gas water heater system, which comprises a first tap water pipe, a second tap water pipe, a tap water inlet, at least one water mixing valve connected with a water using point, a fourth one-way valve, a return water connecting pipe, a hot water outlet pipe, a connecting pipe and the zero-cold-water gas water heater; the water return nozzle is connected with the cold water inlet nozzle through the connecting pipe; the hot water port of the water mixing valve is communicated with the hot water outlet nozzle through the hot water outlet pipe, and the hot water outlet pipe is connected with the first tap water pipe through the backwater connecting pipe provided with the fourth one-way valve; an inlet of the fourth one-way valve is communicated with the hot water outlet pipe, and an outlet of the fourth one-way valve is communicated with the first tap water pipe; a cold water port of the water mixing valve is connected with one end of the first tap water pipe, the other end of the first tap water pipe is connected with one end of the second tap water pipe, and the other end of the second tap water pipe is connected with the cold water inlet nozzle; the tap water inlets are connected with the first tap water pipe and the second tap water pipe.
The invention also provides a second zero-cold-water gas water heater system, which comprises a first tap water pipe, a second tap water pipe, a tap water port, at least one water mixing valve connected with a water using point, a backwater connecting pipe, a hot water outlet pipe and the zero-cold-water gas water heater; the hot water port of the water mixing valve is communicated with the hot water outlet nozzle through the hot water outlet pipe, and the hot water outlet pipe is connected with the return water nozzle through the return water connecting pipe; the cold water port of the water mixing valve is connected with one end of the first tap water pipe, the other end of the first tap water pipe is communicated with the tap water port, one end of the second tap water pipe is connected with the cold water inlet nozzle, and the other end of the second tap water pipe is communicated with the tap water port.
Preferably, the first end of the water inlet pipe of the water pump is connected with the cold water pipe to form a second water pipe node, the second water pipe node is located at the cold water pipe at one end between the cold water inlet nozzle and the first water pipe node, and the second water flow sensor and the first check valve are both specifically installed at a section of the cold water pipe located between the first water pipe node and the second water pipe node.
The invention also provides a third zero-cold-water gas water heater system which comprises a first tap water pipe, a second tap water pipe, a tap water inlet, at least one water mixing valve connected with a water using point, a fourth one-way valve, a backwater connecting pipe, a hot water outlet pipe and the zero-cold-water gas water heater; the hot water port of the water mixing valve is communicated with the hot water outlet nozzle through the hot water outlet pipe, and the hot water outlet pipe is connected with the first tap water pipe through the backwater connecting pipe provided with the fourth one-way valve; an inlet of the fourth one-way valve is communicated with the hot water outlet pipe, and an outlet of the fourth one-way valve is communicated with the first tap water pipe; a cold water port of the water mixing valve is connected with one end of the first tap water pipe, the other end of the first tap water pipe is connected with one end of the second tap water pipe, and the other end of the second tap water pipe is connected with the cold water inlet nozzle; the tap water inlets are connected with the first tap water pipe and the second tap water pipe.
Furthermore, the zero-cold-water gas water heater also comprises a connecting pipe, a second one-way valve arranged at the connecting pipe and a water return nozzle communicated with the hot water outlet nozzle, wherein the water return nozzle is connected with a section of cold water pipe between the second water pipe node and the cold water inlet nozzle through the connecting pipe; the inlet of the second one-way valve is communicated with the water return nozzle, and the outlet of the second one-way valve is communicated with the cold water inlet nozzle.
The invention also provides a fourth zero-cold-water gas water heater system, which comprises a first tap water pipe, a second tap water pipe, a tap water port, at least one water mixing valve connected with a water using point, a backwater connecting pipe, a hot water outlet pipe and the zero-cold-water gas water heater; the hot water port of the water mixing valve is communicated with the hot water outlet nozzle through the hot water outlet pipe, and the hot water outlet pipe is connected with the return water nozzle through the return water connecting pipe; the cold water port of the water mixing valve is connected with one end of the first tap water pipe, the other end of the first tap water pipe is communicated with the tap water port, one end of the second tap water pipe is connected with the cold water inlet nozzle, and the other end of the second tap water pipe is communicated with the tap water port.
According to the zero-cold-water gas water heater and the zero-cold-water gas water heater system, the first end of the water outlet pipe of the water pump is connected with the water outlet end of the circulating water pump, the second end of the water outlet pipe of the water pump is connected with the cold water pipe to form a first water pipe node, the cold water pipe is communicated with the hot water outlet nozzle through the heat exchanger, and the first water flow sensor is arranged at the water inlet pipe of the water pump or the water outlet pipe of the water pump; thus, when a water circulation heating pipeline formed by the water pump inlet pipe, the circulating water pump, the water pump outlet pipe, the cold water pipe, the heat exchanger and the hot water outlet nozzle and communicated with the hot water outlet nozzle works (namely the circulating water pump works), the circulating water pump sprays water from the water pump inlet pipe into the water pump outlet pipe and then enters the heat exchanger through the cold water pipe for circulation heating, at this time, the first water flow sensor can generate a water flow signal, but the second water flow sensor does not generate a water flow signal (because the inlet of the first one-way valve is communicated with the cold water inlet nozzle, the outlet of the first one-way valve is communicated with the first water pipe node, and the first one-way valve is arranged at a section of the cold water pipe between the first water pipe node and the cold water inlet nozzle, therefore, water flowing out of the water pump water outlet pipe cannot flow back to the cold water inlet nozzle, so that the second water flow sensor arranged at the cold water pipe between the first water pipe node and the cold water inlet nozzle cannot generate a water flow signal), and the controller judges that the zero-cold-water gas water heater is performing water circulation heating; when a user needs to use water, no matter whether the circulating water pump works or not, water flows into the cold water inlet nozzle, passes through the cold water pipe, reaches the heat exchanger to be heated, and flows out of the hot water outlet nozzle after being heated, so that water flows from the cold water pipe, the second water flow sensor generates a water flow signal, the controller judges that the user uses water according to the water flow signal, then the circulating water pump stops working, the controller calculates the total water flow of the zero-cold-water gas water heater according to the water flow signals of the first water flow sensor and the second water flow sensor, then the controller controls the heating work of the zero-cold-water gas water heater according to the total water flow, the user can use water normally, and the problem that the zero-cold-water gas water heater works due to the fact that program operation is prone to errors caused by the fact that a control program of a single-flow sensor is complex is solved The problem of instability is solved, so the method has good user experience; and because the second water flow sensor judges that the water is being used by the user, the circulating water pump stops working, so that the electric energy can be saved and the service life of the circulating water pump can be prolonged.
Drawings
In order to more clearly illustrate the technical solution of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a zero-cold-water gas water heater provided by an embodiment of the invention;
FIG. 2 is a schematic structural diagram of another zero-cold-water gas water heater provided by the embodiment of the invention;
FIG. 3 is a schematic structural diagram of another zero-cold-water gas water heater provided by the embodiment of the invention;
FIG. 4 is a schematic structural diagram of a zero-cold-water gas water heater system according to an embodiment of the present invention;
FIG. 5 is a schematic view of another configuration of the zero cold water gas water heater system shown in FIG. 4;
FIG. 6 is a schematic diagram of a zero cold water gas water heater system according to an embodiment of the present invention;
FIG. 7 is a schematic diagram of a zero cold water gas water heater system according to an embodiment of the present invention;
fig. 8 is a schematic structural diagram of another zero-cold-water gas water heater system according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, 2 and 3, in one aspect, the present invention provides a zero-cold water gas water heater, including a circulating water pump 1, a water pump inlet pipe 2, a water pump outlet pipe 3, a cold water pipe 4, a cold water inlet tap 5, a hot water outlet tap 6, a heat exchanger 7, a first check valve 8, a controller 9, a first water flow sensor 10 and a second water flow sensor 11; the cold water pipe 4 is connected with the cold water inlet nozzle 5, and the cold water pipe 4 is connected with the water inlet end of the heat exchanger 7; the water outlet end of the heat exchanger 7 is communicated with the hot water outlet nozzle 6; the first end of the water pump inlet pipe 2 is used for being communicated with the hot water outlet nozzle 6, and the second end of the water pump inlet pipe 2 is connected with the water inlet end of the circulating water pump 1; the first end of the water pump water outlet pipe 3 is connected with the water outlet end of the circulating water pump 1, and the second end of the water pump water outlet pipe 3 is connected with the cold water pipe 4 to form a first water pipe node; the first water flow sensor 10 is arranged at the water inlet pipe 2 or the water outlet pipe 3 of the water pump, and the second water flow sensor 11 and the first one-way valve 8 are both arranged at a section of the cold water pipe 4 between the first water pipe node and the cold water inlet nozzle 5; an inlet of the first one-way valve 8 is communicated with the cold water inlet nozzle, and an outlet of the first one-way valve 8 is communicated with the first water pipe node; the circulating water pump 1, the first water flow sensor 10 and the second water flow sensor 11 are all electrically connected with the controller 9.
Preferably, referring to fig. 1, the zero-cold-water gas water heater further includes a third check valve 30, and the third check valve 30 is installed at the water outlet pipe 3 of the water pump; the third one-way valve 30 is installed at the water pump water outlet pipe 3, an inlet of the third one-way valve 30 is communicated with a first end of the water pump water outlet pipe 3, and an outlet of the third one-way valve 30 is communicated with a second end of the water pump water outlet pipe 3; or, the third check valve 30 is installed at the water pump inlet pipe 2, an inlet of the third check valve 30 is communicated with the first end of the water pump inlet pipe 2, and an outlet of the third check valve 30 is communicated with the second end of the water pump inlet pipe 2. This prevents water from flowing from the cold water pipe 4 to the water pump inlet pipe 2 through the water pump inlet pipe 2, thereby allowing water to flow more intensively to the heat exchanger 7 through the cold water pipe 4 connected to the cold water inlet tap 5.
Preferably, referring to fig. 1, fig. 2 and fig. 3, the zero-cold water gas water heater further includes a hot water storage tank 31, a water inlet end of the hot water storage tank 31 is communicated with a water outlet end of the heat exchanger 7, and a water outlet end of the hot water storage tank 31 is communicated with the hot water outlet nozzle 6. Therefore, the hot water from the heat exchanger 7 is mixed with the hot water temporarily stored in the hot water storage tank 31, so that the temperature variation amplitude of the hot water from the hot water outlet nozzle 6 is reduced, the phenomenon that the water from the hot water outlet nozzle 6 is suddenly cooled and suddenly heated is avoided, and the use experience of a user is improved. It should be noted that the hot water storage tank 31 and the heat exchanger 7 may be connected through one or more pipes, and the hot water storage tank 31 and the hot water nozzle 6 may be connected through one or more pipes, which is not limited herein.
In the embodiment of the invention, a first end of the water pump water outlet pipe 3 is connected with a water outlet end of the circulating water pump 1, a second end of the water pump water outlet pipe 3 is connected with the cold water pipe 4 to form a first water pipe node, the cold water pipe 4 is communicated with the hot water faucet 6 through the heat exchanger 7, and the first water flow sensor 10 is installed at the water pump water inlet pipe 2 or the water pump water outlet pipe 3; thus, when a water circulation heating pipeline formed by the water pump inlet pipe 2, the circulating water pump 1, the water pump outlet pipe 3, the cold water pipe 4, the heat exchanger 7 and the hot water outlet nozzle 6 and used for communicating with the hot water outlet nozzle 6 works (namely, the circulating water pump 1 works), the circulating water pump 1 sprays water coming from the water pump inlet pipe 2 into the water pump outlet pipe 3 and then enters the heat exchanger 7 through the cold water pipe 4 for circulation heating, at this time, the first water flow sensor 10 generates a water flow signal, but the second water flow sensor 11 does not generate a water flow signal (because the inlet of the first one-way valve 8 is communicated with the cold water inlet nozzle, the outlet of the first one-way valve is communicated with the first water pipe node, and the first one-way valve 8 is installed at a section of the cold water pipe 4 between the first water pipe node and the cold water inlet nozzle 5, therefore, the water flowing out of the water pump water outlet pipe 3 cannot flow back to the cold water inlet nozzle 5, so that the second water flow sensor 11 installed at the cold water pipe 4 between the first water pipe node and the cold water inlet nozzle 5 cannot generate a water flow signal), and at this time, the controller 9 judges that the zero-cold-water gas water heater is performing water circulation heating; when a user needs to use water, no matter whether the circulating water pump 1 works, water flows into the cold water inlet nozzle 5, passes through the cold water pipe 4, reaches the heat exchanger 7 to be heated, and flows out from the hot water outlet nozzle 6 after being heated, so that water flows through the cold water pipe 4, the second water flow sensor generates a water flow signal, the controller 9 judges that the user uses water according to the water flow signal, then the circulating water pump 1 stops working by the controller 9, the controller 9 calculates the total water flow of the zero-cold-water gas water heater according to the water flow signals of the first water flow sensor 10 and the second water flow sensor 11, then the controller 9 controls the heating work of the zero-cold-water gas water heater according to the total water flow, so that the user can use water normally, the problem that the zero-cold-water gas water heater is unstable in work due to the fact that program operation is prone to making mistakes due to the fact that a single-flow sensor control program is complex is solved, and therefore the zero-cold-water gas water heater has good user experience; and because the circulating water pump 1 is stopped when the second water flow sensor 11 determines that the user is using water, the electric energy can be saved and the service life of the circulating water pump 1 can be prolonged.
To facilitate an understanding of the invention, some preferred examples of the invention are provided herein:
first preferred embodiment:
referring to fig. 1, the zero-cold water gas water heater further includes a water return nozzle 13 communicated with the hot water outlet nozzle 6, and the water return nozzle 13 is connected with a first end of the water inlet pipe 2 of the water pump.
In the preferred embodiment, the water return nozzle 13 for communicating with the hot water outlet nozzle 6 is connected to the first end of the water pump inlet pipe 2, so that the water return nozzle 13, the water pump inlet pipe 2, the circulating water pump 1, the water pump outlet pipe 3, the cold water pipe 4, the heat exchanger 7 and the hot water outlet nozzle 6 can form a water circulation heating pipeline, and the zero-cold water gas water heater has a water circulation heating function.
Second preferred embodiment:
referring to fig. 2, a first end of the water inlet pipe 2 of the water pump is connected to the cold water pipe 4 to form a second water pipe node, the second water pipe node is located at a section of the cold water pipe 4 between the cold water inlet nozzle 5 and the first water pipe node, and the second water flow sensor 11 and the first check valve 8 are both specifically installed at a section of the cold water pipe 4 between the first water pipe node and the second water pipe node.
In the preferred embodiment, a second water pipe node is formed by connecting the first end of the water pump inlet pipe 2 with the cold water pipe 4, so that when the water pump inlet pipe 2 connected with the cold water pipe 4 is communicated with the hot water faucet 6 through the cold water inlet tap 5 connected with the cold water pipe 4, the cold water inlet tap 5, the water pump inlet pipe 2, the circulating water pump 1, the water pump outlet pipe 3, the cold water pipe 4, the heat exchanger 7 and the hot water faucet 6 can form a water circulation heating pipeline, so that the zero-cold-water gas water heater has a water circulation heating function.
A third preferred embodiment is provided on the basis of the second preferred embodiment:
referring to fig. 3, the zero-cold water gas water heater further includes a connecting pipe 14, a second check valve 15 installed at the connecting pipe 14, and a water return nozzle 13 for communicating with the hot water outlet nozzle 6, wherein the water return nozzle 13 is connected to a section of cold water pipe 4 located between a node of the second water pipe and the cold water inlet nozzle 5 through the connecting pipe 14; the inlet of the second one-way valve 15 is communicated with the water return nozzle 13, and the outlet of the second one-way valve 15 is communicated with the cold water inlet nozzle 5.
In the preferred embodiment, a second water pipe node is formed by connecting the first end of the water inlet pipe 2 of the water pump with the cold water pipe 4, and the water return nozzle 13 is connected with a section of the cold water pipe 4 between the second water pipe node and the cold water inlet nozzle 5 through the connecting pipe 14; thus, when the water pump inlet pipe 2 connected with the cold water pipe 4 is communicated with the hot water outlet nozzle 6 through the cold water inlet nozzle 5 connected with the cold water pipe 4, the cold water inlet nozzle 5, the water pump inlet pipe 2, the circulating water pump 1, the water pump outlet pipe 3, the cold water pipe 4, the heat exchanger 7 and the hot water outlet nozzle 6 can form a water circulation heating pipeline; or when the water pump inlet pipe 2 is communicated with the hot water outlet nozzle 6 through the water return nozzle 13, the connecting pipe 14, the water pump inlet pipe 2, the circulating water pump 1, the water pump outlet pipe 3, the cold water pipe 4, the heat exchanger 7 and the hot water outlet nozzle 6 may form a water circulation heating pipeline; therefore, the zero-cold-water gas water heater has the function of water circulation heating through the preferred embodiment, and a user can design a water circulation heating pipeline according to actual conditions, so that the use experience of the user is improved.
In another aspect of the present invention, referring to fig. 4, a zero-cold-water gas water heater system is provided, which includes a first tap water pipe 20, a second tap water pipe 21, a tap water port 22, at least one water mixing valve 23 connected to a water using point, a fourth check valve 24, a return water connecting pipe 25, a hot water outlet pipe 26, a connecting pipe 14, and a zero-cold-water gas water heater according to the first preferred embodiment; the water return nozzle 13 is connected with the cold water inlet nozzle 5 through the connecting pipe 14; the hot water port of the water mixing valve 23 is communicated with the hot water outlet nozzle 6 through the hot water outlet pipe, and the hot water outlet pipe is connected with the first tap water pipe 20 through the backwater connecting pipe 25 provided with the fourth check valve 24; the inlet of the fourth one-way valve 24 is communicated with the hot water outlet pipe 26, and the outlet of the fourth one-way valve 24 is communicated with the first tap water pipe 20; a cold water port of the water mixing valve 23 is connected with one end of the first tap water pipe 20, the other end of the first tap water pipe 20 is connected with one end of the second tap water pipe 21, and the other end of the second tap water pipe 21 is connected with the cold water inlet nozzle 5; the tap water port 22 is connected to the first tap water pipe 20 and the second tap water pipe 21.
In the embodiment of the present invention, the hot water outlet pipe 26 communicated with the hot water outlet nozzle 6 is connected to the first tap water pipe 20 through the return water connecting pipe 25 provided with the fourth check valve 24, and the first tap water pipe 20 is connected to the cold water inlet nozzle 5 through the second tap water pipe 21, so that the hot water outlet pipe 26, the return water connecting pipe 25, the first tap water pipe 20, the second tap water pipe 21, the cold water inlet nozzle 5, the connecting pipe 14, the return water nozzle 13, the water pump inlet pipe 2, the circulating water pump 1, the water pump outlet pipe 3, the cold water pipe 4, the heat exchanger 7 and the hot water outlet nozzle 6 can form a water circulation heating pipeline, so that the zero-cold water gas water heater system has a water circulation heating function when a temperature sensor disposed in the hot water outlet pipe 26 and electrically connected to the controller 9 detects that the temperature sensor in the hot water outlet pipe 26 is in the hot water outlet pipe 26 When the temperature of the water is lower than the preset requirement, the controller 9 controls the start of the circulating water pump 1, so that the water in the hot water outlet pipe 26 continuously enters the heat exchanger 7 through the return water connecting pipe 25, the first tap water pipe 20, the second tap water pipe 21, the cold water inlet nozzle 5, the connecting pipe 14, the return water nozzle 13, the water pump inlet pipe 2, the circulating water pump 1, the water pump outlet pipe 3 and the cold water pipe 4 for heating, and flows out from the hot water outlet nozzle 6 after heating, thereby realizing the circulating heating of the water in the hot water outlet pipe 26. When a user needs to use water, no matter whether the circulating water pump 1 works, water flows into the cold water inlet nozzle 5, passes through the cold water pipe 4, reaches the heat exchanger 7 to be heated, and flows out from the hot water outlet nozzle 6 after being heated, so that water flows through the cold water pipe 4, the second water flow sensor generates a water flow signal, the controller 9 judges that the user uses water according to the water flow signal, then the circulating water pump 1 stops working by the controller 9, the controller 9 calculates the total water flow of the zero-cold-water gas water heater according to the water flow signals of the first water flow sensor 10 and the second water flow sensor 11, then the controller 9 controls the heating work of the zero-cold-water gas water heater according to the total water flow, so that the user can use water normally, the problem that the zero-cold-water gas water heater is unstable in work due to the fact that program operation is prone to making mistakes due to the fact that a single-flow sensor control program is complex is solved, and therefore the zero-cold-water gas water heater has good user experience; and because the circulating water pump 1 is stopped when the second water flow sensor 11 determines that the user is using water, the electric energy can be saved and the service life of the circulating water pump 1 can be prolonged.
It should be noted that, referring to fig. 5, the connection pipe in the zero-cold water gas water heater system of the present embodiment may be removed, and at this time, the second tap water pipe 21 may be directly connected to the water return nozzle 13 (i.e., the second tap water pipe 21 is no longer connected to the cold water inlet nozzle 5); thus, the hot water outlet pipe 26, the backwater connecting pipe 25, the first tap water pipe 20, the second tap water pipe 21, the backwater nozzle 13, the water pump inlet pipe 2, the circulating water pump 1, the water pump outlet pipe 3, the cold water pipe 4, the heat exchanger 7 and the hot water nozzle 6 can form a water circulation heating pipeline, so that the zero-cold-water gas water heater system has a water circulation heating function, that is, when a temperature sensor arranged in the hot water outlet pipe 26 and electrically connected with the controller 9 detects that the temperature of water in the hot water outlet pipe 26 is lower than a preset requirement, the controller 9 controls the start of the circulating water pump 1, so that the water in the hot water outlet pipe 26 continuously passes through the backwater connecting pipe 25, the first tap water pipe 20, the second tap water pipe 21 and the backwater nozzle 13, The water inlet pipe 2, the circulating water pump 1, the water outlet pipe 3 and the cold water pipe 4 enter the heat exchanger 7 to be heated, and flow out from the hot water faucet 6 after being heated, so that the circulating heating of the water in the hot water outlet pipe 26 is realized. After the water in the hot water outlet pipe 26 is heated circularly, when a user opens the mixing valve 23 at a water consumption point, the water consumption point will firstly flow out the heated water, and at this time, the tap water in the tap water port 22 will enter the heat exchanger 7 through the second tap water pipe 21, the water return nozzle 13, the water pump inlet pipe 2, the circulating water pump 1, the water pump outlet pipe 3 and the cold water pipe 4 to be heated, and then flow into the hot water outlet pipe 26 from the hot water outlet nozzle 6 after being heated, and then flow out through the water consumption point connected with the hot water outlet pipe 26, so that the continuous supply of hot water is realized. Therefore, the embodiment can realize the function of zero cold water of the gas water heater, and overcomes the defect that tap water with the temperature not reaching the bathing requirement firstly flows out in the using process of a user because the water in the hot water outlet pipe 26 cannot be preheated, thereby improving the bathing experience of the user.
In another aspect of the present invention, a zero-cold-water gas water heater system is provided, please refer to fig. 6, which includes a first tap water pipe 20, a second tap water pipe 21, a tap water port 22, at least one mixing valve 23 connected to a water using point, a return water connecting pipe 25, a hot water outlet pipe, and a zero-cold-water gas water heater according to the first preferred embodiment; the hot water port of the water mixing valve 23 is communicated with the hot water outlet nozzle 6 through the hot water outlet pipe, and the hot water outlet pipe is connected with the water return nozzle 13 through the water return connecting pipe 25; the cold water port of the mixing valve 23 is connected to one end of the first tap water pipe 20, the other end of the first tap water pipe 20 is communicated with the tap water port 22, one end of the second tap water pipe 21 is connected to the cold water inlet nozzle 5, and the other end of the second tap water pipe 21 is communicated with the tap water port 22.
In the embodiment of the present invention, the hot water outlet pipe communicated with the hot water outlet nozzle 6 is connected to the water return nozzle 13 through the water return connecting pipe 25, so that the hot water outlet pipe, the water return connecting pipe 25, the water return nozzle 13, the water pump inlet pipe 2, the circulating water pump 1, the water pump outlet pipe 3, the cold water pipe 4, the heat exchanger 7 and the hot water outlet nozzle 6 can form a water circulation heating pipeline, so that the zero-cold-water gas water heater system has a water circulation heating function, that is, when a temperature sensor disposed in the hot water outlet pipe 26 and electrically connected to the controller 9 detects that the temperature of water in the hot water outlet pipe 26 is lower than a preset requirement, the controller 9 controls the start-up of the circulating water pump 1, so that the water in the hot water outlet pipe 26 continuously passes through the water return connecting pipe 25, The water return nozzle 13, the water pump inlet pipe 2, the circulating water pump 1, the water pump outlet pipe 3 and the cold water pipe 4 enter the heat exchanger 7 to be heated, and flow out from the hot water outlet nozzle 6 after being heated, so that the circulating heating of the water in the hot water outlet pipe 26 is realized. When a user needs to use water, no matter whether the circulating water pump 1 works, water flows into the cold water inlet nozzle 5, passes through the cold water pipe 4, reaches the heat exchanger 7 to be heated, and flows out from the hot water outlet nozzle 6 after being heated, so that water flows through the cold water pipe 4, the second water flow sensor generates a water flow signal, the controller 9 judges that the user uses water according to the water flow signal, then the circulating water pump 1 stops working by the controller 9, the controller 9 calculates the total water flow of the zero-cold-water gas water heater according to the water flow signals of the first water flow sensor 10 and the second water flow sensor 11, then the controller 9 controls the heating work of the zero-cold-water gas water heater according to the total water flow, so that the user can use water normally, the problem that the zero-cold-water gas water heater is unstable in work due to the fact that program operation is prone to making mistakes due to the fact that a single-flow sensor control program is complex is solved, and therefore the zero-cold-water gas water heater has good user experience; and because the circulating water pump 1 is stopped when the second water flow sensor 11 determines that the user is using water, the electric energy can be saved and the service life of the circulating water pump 1 can be prolonged.
In another aspect of the present invention, a zero-cold-water gas water heater system is provided, please refer to fig. 7, which includes a first tap water pipe 20, a second tap water pipe 21, a tap water port 22, at least one water mixing valve 23 connected to a water using point, a fourth check valve 24, a return water connecting pipe 25, a hot water outlet pipe, and a zero-cold-water gas water heater according to a second preferred embodiment; the hot water port of the water mixing valve 23 is communicated with the hot water outlet nozzle 6 through the hot water outlet pipe, and the hot water outlet pipe is connected with the first tap water pipe 20 through the backwater connecting pipe 25 provided with the fourth check valve 24; the inlet of the fourth one-way valve 24 is communicated with the hot water outlet pipe 26, and the outlet of the fourth one-way valve 24 is communicated with the first tap water pipe 20; a cold water port of the water mixing valve 23 is connected with one end of the first tap water pipe 20, the other end of the first tap water pipe 20 is connected with one end of the second tap water pipe 21, and the other end of the second tap water pipe 21 is connected with the cold water inlet nozzle 5; the tap water port 22 is connected to the first tap water pipe 20 and the second tap water pipe 21.
In the embodiment of the present invention, the hot water outlet pipe communicated with the hot water outlet nozzle 6 is connected to the first tap water pipe 20 through the return water connecting pipe 25 provided with the fourth check valve 24, and the other end of the second tap water pipe 21 connected to the first tap water pipe 20 is connected to the cold water inlet nozzle 5; thus, when the water pump inlet pipe 2 is communicated with the hot water outlet nozzle 6 through the cold water inlet nozzle 5 connected with the cold water pipe 4, the hot water outlet pipe, the backwater connecting pipe 25, the first tap water pipe 20, the second tap water pipe 21, the cold water inlet nozzle 5, the water pump inlet pipe 2, the circulating water pump 1, the water pump outlet pipe 3, the cold water pipe 4, the heat exchanger 7 and the hot water outlet nozzle 6 can form a water circulation heating pipeline, so that the zero-cold-water gas water heater system has a water circulation heating function, namely when a temperature sensor arranged in the hot water outlet pipe 26 and electrically connected with the controller 9 detects that the temperature of water in the hot water outlet pipe 26 is lower than a preset requirement, the controller 9 controls the starting of the circulating water pump 1, so that the water in the hot water outlet pipe 26 is continuously circulated through the backwater connecting pipe 25, The first tap water pipe 20, the second tap water pipe 21, the cold water inlet nozzle 5, the water pump inlet pipe 2, the circulating water pump 1, the water pump outlet pipe 3 and the cold water pipe 4 enter the heat exchanger 7 to be heated, and flow out from the hot water outlet nozzle 6 after being heated, so that the circulating heating of the water in the hot water outlet pipe 26 is realized. When a user needs to use water, no matter whether the circulating water pump 1 works, water flows into the cold water inlet nozzle 5, passes through the cold water pipe 4, reaches the heat exchanger 7 to be heated, and flows out from the hot water outlet nozzle 6 after being heated, so that water flows through the cold water pipe 4, the second water flow sensor generates a water flow signal, the controller 9 judges that the user uses water according to the water flow signal, then the circulating water pump 1 stops working by the controller 9, the controller 9 calculates the total water flow of the zero-cold-water gas water heater according to the water flow signals of the first water flow sensor 10 and the second water flow sensor 11, then the controller 9 controls the heating work of the zero-cold-water gas water heater according to the total water flow, so that the user can use water normally, the problem that the zero-cold-water gas water heater is unstable in work due to the fact that program operation is prone to making mistakes due to the fact that a single-flow sensor control program is complex is solved, and therefore the zero-cold-water gas water heater has good user experience; and because the circulating water pump 1 is stopped when the second water flow sensor 11 determines that the user is using water, the electric energy can be saved and the service life of the circulating water pump 1 can be prolonged.
In another aspect of the present invention, a zero-cold-water gas water heater system is further provided, please refer to fig. 8, which includes a first tap water pipe 20, a second tap water pipe 21, a tap water port 22, at least one mixing valve 23 connected to a water using point, a return water connecting pipe 25, a hot water outlet pipe, and a zero-cold-water gas water heater according to a third preferred embodiment; the hot water port of the water mixing valve 23 is communicated with the hot water outlet nozzle 6 through the hot water outlet pipe, and the hot water outlet pipe is connected with the water return nozzle 13 through the water return connecting pipe 25; the cold water port of the mixing valve 23 is connected to one end of the first tap water pipe 20, the other end of the first tap water pipe 20 is communicated with the tap water port 22, one end of the second tap water pipe 21 is connected to the cold water inlet nozzle 5, and the other end of the second tap water pipe 21 is communicated with the tap water port 22.
In the embodiment of the present invention, the hot water outlet pipe communicated with the hot water outlet nozzle 6 is connected to the water return nozzle 13 through the water return connecting pipe 25, so that the hot water outlet pipe, the water return connecting pipe 25, the water return nozzle 13, the connecting pipe 14, the water pump inlet pipe 2, the circulating water pump 1, the water pump outlet pipe 3, the cold water pipe 4, the heat exchanger 7 and the hot water outlet nozzle 6 can form a water circulation heating pipeline, so that the zero-cold-water gas water heater system has a water circulation heating function, that is, when a temperature sensor arranged in the hot water outlet pipe 26 and electrically connected to the controller 9 detects that the temperature of water in the hot water outlet pipe 26 is lower than a preset requirement, the controller 9 controls the start of the circulating water pump, so that the water in the hot water outlet pipe 26 continuously passes through the water return connecting pipe 25, The water return nozzle 13, the connecting pipe 14, the water pump inlet pipe 2, the circulating water pump 1, the water pump outlet pipe 3 and the cold water pipe 4 enter the heat exchanger 7 to be heated, and flow out from the hot water outlet nozzle 6 after being heated, so that the circulating heating of the water in the hot water outlet pipe 26 is realized. When a user needs to use water, no matter whether the circulating water pump 1 works, water flows into the cold water inlet nozzle 5, passes through the cold water pipe 4, reaches the heat exchanger 7 to be heated, and flows out from the hot water outlet nozzle 6 after being heated, so that water flows through the cold water pipe 4, the second water flow sensor generates a water flow signal, the controller 9 judges that the user uses water according to the water flow signal, then the circulating water pump 1 stops working by the controller 9, the controller 9 calculates the total water flow of the zero-cold-water gas water heater according to the water flow signals of the first water flow sensor 10 and the second water flow sensor 11, then the controller 9 controls the heating work of the zero-cold-water gas water heater according to the total water flow, so that the user can use water normally, the problem that the zero-cold-water gas water heater is unstable in work due to the fact that program operation is prone to making mistakes due to the fact that a single-flow sensor control program is complex is solved, and therefore the zero-cold-water gas water heater has good user experience; and because the circulating water pump 1 is stopped when the second water flow sensor 11 determines that the user is using water, the electric energy can be saved and the service life of the circulating water pump 1 can be prolonged.
In the embodiment of the present invention, it should be noted that one or more of the first check valve 8, the second check valve 15, the third check valve 30, and the fourth check valve 24 may be provided, and are not limited in particular. The water pump outlet pipe 3 can be connected with the cold water pipe 4 through a three-way joint, and the water pump outlet pipe 3 and the cold water pipe 4 can also be connected in an integrated manner, and the concrete limitation is not made here.
The above description is only an embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention disclosed herein are intended to be covered by the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (10)
1. A zero-cold-water gas water heater comprises a circulating water pump, a water pump water inlet pipe, a water pump water outlet pipe, a cold water inlet nozzle, a hot water outlet nozzle, a heat exchanger and a controller, and is characterized by further comprising a first water flow sensor and a second water flow sensor;
the cold water pipe is connected with the cold water inlet nozzle and is connected with the water inlet end of the heat exchanger; the water outlet end of the heat exchanger is communicated with the hot water outlet nozzle;
the first end of the water inlet pipe of the water pump is communicated with the hot water outlet nozzle, and the second end of the water inlet pipe of the water pump is connected with the water inlet end of the circulating water pump;
the first end of the water pump water outlet pipe is connected with the water outlet end of the circulating water pump, and the second end of the water pump water outlet pipe is connected with the cold water pipe to form a first water pipe node; the first water flow sensor is arranged at the water inlet pipe of the water pump or the water outlet pipe of the water pump, and the second water flow sensor and the first one-way valve are both arranged at a section of cold water pipe between the first water pipe node and the cold water inlet nozzle; an inlet of the first one-way valve is communicated with the cold water inlet nozzle, and an outlet of the first one-way valve is communicated with the first water pipe node;
the circulating water pump, the first water flow sensor and the second water flow sensor are all electrically connected with the controller.
2. The zero-cold-water gas water heater according to claim 1, further comprising a water return nozzle for communicating with the hot water outlet nozzle, the water return nozzle being connected to the first end of the water pump inlet pipe.
3. The zero-cold-water gas water heater of claim 1, wherein a first end of the water pump inlet pipe is connected with the cold water pipe to form a second water pipe node, the second water pipe node being located at a section of the cold water pipe between the cold water inlet tap and the first water pipe node; the second water flow sensor and the first one-way valve are both installed at a section of cold water pipe located between the first water pipe node and the second water pipe node.
4. The zero-cold-water gas water heater according to claim 3, further comprising a connecting pipe, a second one-way valve installed at the connecting pipe, and a water return nozzle for communicating with the hot water outlet nozzle, wherein the water return nozzle is connected with a section of cold water pipe located between the second water pipe node and the cold water inlet nozzle through the connecting pipe; the inlet of the second one-way valve is communicated with the water return nozzle, and the outlet of the second one-way valve is communicated with the cold water inlet nozzle.
5. The zero cold water gas water heater of claim 1, further comprising a third one-way valve; the third one-way valve is arranged at the water outlet pipe of the water pump, the inlet of the third one-way valve is communicated with the first end of the water outlet pipe of the water pump, and the outlet of the third one-way valve is communicated with the second end of the water outlet pipe of the water pump; or,
the third check valve is installed water pump inlet tube department, just the entry of third check valve with the first end intercommunication of water pump inlet tube, the export of third check valve with the second end intercommunication of water pump inlet tube.
6. The gas water heater according to any one of claims 1 to 5, further comprising a hot water storage tank, wherein a water inlet end of the hot water storage tank is communicated with a water outlet end of the heat exchanger, and a water outlet end of the hot water storage tank is communicated with the hot water outlet nozzle.
7. A zero-cold-water gas water heater system, which is characterized by comprising a first tap water pipe, a second tap water pipe, a tap water port, at least one water mixing valve connected with a water using point, a fourth one-way valve, a return water connecting pipe, a hot water outlet pipe, a connecting pipe and the zero-cold-water gas water heater as claimed in claim 2; the water return nozzle is connected with the cold water inlet nozzle through the connecting pipe;
the hot water port of the water mixing valve is communicated with the hot water outlet nozzle through the hot water outlet pipe, and the hot water outlet pipe is connected with the first tap water pipe through the backwater connecting pipe provided with the fourth one-way valve; an inlet of the fourth one-way valve is communicated with the hot water outlet pipe, and an outlet of the fourth one-way valve is communicated with the first tap water pipe;
a cold water port of the water mixing valve is connected with one end of the first tap water pipe, the other end of the first tap water pipe is connected with one end of the second tap water pipe, and the other end of the second tap water pipe is connected with the cold water inlet nozzle; the tap water inlets are connected with the first tap water pipe and the second tap water pipe.
8. A zero-cold-water gas water heater system, which is characterized by comprising a first tap water pipe, a second tap water pipe, a tap water port, at least one water mixing valve connected with a water using point, a return water connecting pipe, a hot water outlet pipe and the zero-cold-water gas water heater as claimed in claim 2;
the hot water port of the water mixing valve is communicated with the hot water outlet nozzle through the hot water outlet pipe, and the hot water outlet pipe is connected with the return water nozzle through the return water connecting pipe;
the cold water port of the water mixing valve is connected with one end of the first tap water pipe, the other end of the first tap water pipe is communicated with the tap water port, one end of the second tap water pipe is connected with the cold water inlet nozzle, and the other end of the second tap water pipe is communicated with the tap water port.
9. A zero-cold-water gas water heater system, which is characterized by comprising a first tap water pipe, a second tap water pipe, a tap water port, at least one water mixing valve connected with a water using point, a fourth one-way valve, a return water connecting pipe, a hot water outlet pipe and the zero-cold-water gas water heater as claimed in claim 3;
the hot water port of the water mixing valve is communicated with the hot water outlet nozzle through the hot water outlet pipe, and the hot water outlet pipe is connected with the first tap water pipe through the backwater connecting pipe provided with the fourth one-way valve; an inlet of the fourth one-way valve is communicated with the hot water outlet pipe, and an outlet of the fourth one-way valve is communicated with the first tap water pipe;
a cold water port of the water mixing valve is connected with one end of the first tap water pipe, the other end of the first tap water pipe is connected with one end of the second tap water pipe, and the other end of the second tap water pipe is connected with the cold water inlet nozzle; the tap water inlets are connected with the first tap water pipe and the second tap water pipe.
10. A zero-cold-water gas water heater system is characterized by comprising a first tap water pipe, a second tap water pipe, a tap water port, at least one water mixing valve connected with a water using point, a return water connecting pipe, a hot water outlet pipe and the zero-cold-water gas water heater as claimed in claim 4;
the hot water port of the water mixing valve is communicated with the hot water outlet nozzle through the hot water outlet pipe, and the hot water outlet pipe is connected with the return water nozzle through the return water connecting pipe;
the cold water port of the water mixing valve is connected with one end of the first tap water pipe, the other end of the first tap water pipe is communicated with the tap water port, one end of the second tap water pipe is connected with the cold water inlet nozzle, and the other end of the second tap water pipe is communicated with the tap water port.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
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| CN201610917603.7A CN106369807B (en) | 2016-10-20 | 2016-10-20 | Zero cold water gas heater of one kind and its system |
| PCT/CN2016/103996 WO2018072230A1 (en) | 2016-10-20 | 2016-10-31 | Gas water heater having reduced initial cold water flow and system thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610917603.7A CN106369807B (en) | 2016-10-20 | 2016-10-20 | Zero cold water gas heater of one kind and its system |
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| CN106369807A true CN106369807A (en) | 2017-02-01 |
| CN106369807B CN106369807B (en) | 2019-07-16 |
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| CN201610917603.7A Active CN106369807B (en) | 2016-10-20 | 2016-10-20 | Zero cold water gas heater of one kind and its system |
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| WO (1) | WO2018072230A1 (en) |
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| CN107036296A (en) * | 2017-05-06 | 2017-08-11 | 广东万家乐燃气具有限公司 | Multifunctional central gas heater and its control system |
| EP3418649A1 (en) * | 2017-06-21 | 2018-12-26 | Vaillant GmbH | Hot water appliance and hot water system using the same |
| CN109114620B (en) * | 2017-06-26 | 2023-08-11 | 徐兆良 | Brand-new household charging heating architecture and running mode thereof |
| CN109114620A (en) * | 2017-06-26 | 2019-01-01 | 徐兆良 | A kind of completely new household cost allocation heating framework and its operational mode |
| CN107576055A (en) * | 2017-08-25 | 2018-01-12 | 华帝股份有限公司 | A kind of zero cold water water heater |
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| CN108195059A (en) * | 2017-12-29 | 2018-06-22 | Tcl家用电器（中山）有限公司 | Zero cold water gas heater, system and anti-dry method |
| CN110440448A (en) * | 2018-05-04 | 2019-11-12 | 青岛经济技术开发区海尔热水器有限公司 | Water heater system and control method |
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| CN111217420B (en) * | 2018-11-27 | 2022-12-13 | 青岛经济技术开发区海尔热水器有限公司 | Sterilization control method for zero-cold water system of water heater |
| CN111217420A (en) * | 2018-11-27 | 2020-06-02 | 青岛经济技术开发区海尔热水器有限公司 | Sterilization control method for zero-cold water system of water heater |
| CN109612079A (en) * | 2018-12-04 | 2019-04-12 | 上海工业自动化仪表研究院有限公司 | Water-saving gas heater device |
| CN109612079B (en) * | 2018-12-04 | 2024-03-05 | 上海工业自动化仪表研究院有限公司 | Water-saving gas water heater device |
| CN109442732A (en) * | 2018-12-15 | 2019-03-08 | 成都前锋电子有限责任公司 | A kind of zero cold water gas heater system with water circulating pump |
| CN110186180A (en) * | 2019-04-12 | 2019-08-30 | 华帝股份有限公司 | Gas water heater, water outlet control method using gas water heater and pressurization control method |
| CN110094875A (en) * | 2019-06-10 | 2019-08-06 | 中燃宝电气（深圳）有限公司 | Zero cold water gas heater |
| CN110094873A (en) * | 2019-06-10 | 2019-08-06 | 中燃宝电气（深圳）有限公司 | A kind of novel zero cold water gas heater |
| CN110094874A (en) * | 2019-06-10 | 2019-08-06 | 中燃宝电气（深圳）有限公司 | A kind of zero cold water gas heater |
| CN110345629A (en) * | 2019-08-07 | 2019-10-18 | Tcl家用电器（中山）有限公司 | Control method, gas heater and the readable storage medium storing program for executing of gas heater |
| CN110887233A (en) * | 2019-12-11 | 2020-03-17 | 成都师范学院 | Device and method for recycling cold water at front section of water heater |
| CN113280515A (en) * | 2021-05-31 | 2021-08-20 | 重庆信科蓝鸿科技有限公司 | Zero-cold-water constant-temperature hot-water intelligent module and control method |
| CN113465170A (en) * | 2021-07-12 | 2021-10-01 | 重庆交通大学 | Non-circulation zero-cold water heater device |
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| Publication number | Publication date |
|---|---|
| WO2018072230A1 (en) | 2018-04-26 |
| CN106369807B (en) | 2019-07-16 |
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