CN112728760A - Water storage type water heater system and control method - Google Patents
Water storage type water heater system and control method Download PDFInfo
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- CN112728760A CN112728760A CN202011624798.9A CN202011624798A CN112728760A CN 112728760 A CN112728760 A CN 112728760A CN 202011624798 A CN202011624798 A CN 202011624798A CN 112728760 A CN112728760 A CN 112728760A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 1117
- 238000000034 method Methods 0.000 title claims abstract description 50
- 238000010438 heat treatment Methods 0.000 abstract description 31
- 238000005265 energy consumption Methods 0.000 abstract description 6
- 238000003287 bathing Methods 0.000 description 22
- 230000008859 change Effects 0.000 description 8
- 238000010586 diagram Methods 0.000 description 8
- 230000006870 function Effects 0.000 description 8
- 230000000694 effects Effects 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000008236 heating water Substances 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 238000004590 computer program Methods 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
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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
- F24H1/18—Water-storage heaters
- F24H1/186—Water-storage 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
- F24H9/00—Details
- F24H9/0005—Details for water heaters
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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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- Heat-Pump Type And Storage Water Heaters (AREA)
Abstract
The invention relates to a water storage type hot water system and a control method thereof.A first end of an internal pipeline is communicated with a water inlet of a three-way valve through a first water outlet pipe; a first water outlet of the three-way valve is communicated with a lower water inlet of the water storage tank through a water return pipe; one end of the first water inlet pipe is communicated with the other end of the internal pipeline, and the other end of the first water inlet pipe is communicated with one end of the first water inlet and outlet pipe and is used for connecting a water supply port; the other end of the first water inlet and outlet pipe is communicated with a water inlet and outlet at the lower part of the water storage tank; one end of the second water inlet and outlet pipe is communicated with a second water outlet of the three-way valve, and the other end of the second water inlet and outlet pipe is arranged at the upper part of the water storage tank; one end of the second water outlet pipe is communicated with the second water inlet and outlet pipe, and the other end of the second water outlet pipe is used for connecting a water using point; the water pump is arranged on the first water outlet pipe or the water return pipe or the first water inlet pipe or the internal pipeline. The invention can effectively reduce the waiting time of bath heating, reduce energy consumption and reduce water temperature fluctuation.
Description
Technical Field
The invention relates to the technical field of water heaters, in particular to a water storage type hot water system and a control method.
Background
At present, gas water heater products are mainly divided into a rapid hot water supply gas water heater and a water storage type gas water heater, wherein the water storage type gas water heater has the characteristics of rapid heating of the gas water heater, constant temperature of the water storage type gas water heater and the like, and is generally applied to the field of central concentrated hot water supply. However, in the control system of the water storage type gas water heater in the conventional technology, due to the fact that the pipeline design is single, the preheating process has the influence on the situation that a user uses constant-temperature hot water in the water storage tank.
Disclosure of Invention
The invention provides a water storage type hot water system and a control method thereof, aiming at solving at least one technical problem in the background technology.
In one embodiment, the present invention provides a water storage hot water system comprising: the water heater comprises a gas water heater, a water storage tank, a first water outlet pipe, a second water outlet pipe, a water return pipe, a first water inlet and outlet pipe, a second water inlet and outlet pipe, a controller, a three-way valve, a first temperature sensor and a water pump, wherein the three-way valve, the first temperature sensor and the water pump are respectively connected with the controller; the first temperature sensor is arranged in the water storage tank; the gas water heater is connected with the controller and is internally provided with an internal pipeline;
one end of the internal pipeline is communicated with a water inlet of the three-way valve through a first water outlet pipe; a first water outlet of the three-way valve is communicated with a lower water inlet of the water storage tank through a water return pipe; the first water inlet pipe is communicated with the other end of the internal pipeline and one end of the first water inlet and outlet pipe and is used for connecting a water supply port; the other end of the first water inlet and outlet pipe is communicated with a water inlet and outlet at the lower part of the water storage tank; one end of the second water inlet and outlet pipe is communicated with a second water outlet of the three-way valve, and the other end of the second water inlet and outlet pipe extends into the upper part of the inner side of the water storage tank; the second water outlet pipe is communicated with the second water inlet and outlet pipe and is used for connecting a water using point;
the water pump is arranged on the first water outlet pipe or the water return pipe or the first water inlet pipe or the internal pipeline.
In one embodiment, the method further comprises the following steps: the second temperature sensor is connected with the controller and arranged at a preset position at the lower part of the water storage tank;
the first temperature sensor is arranged at a preset position at the upper part of the water storage tank and is lower than the other end of the second water inlet and outlet pipe.
In one embodiment, the method further comprises the following steps: the first water flow sensor is arranged on the internal pipeline, and the second water flow sensor is arranged on the second water outlet pipe and connected with the controller.
In one embodiment, the volume between the upper preset position and the other end of the second water inlet and outlet pipe is between 2.5L and 3.5L.
In one embodiment, the present invention further provides a water storage type hot water control method, applied to a water storage type hot water system:
the method comprises the following steps:
when the current mode is a first preset mode and water consumption information of a water consumption point is not acquired, judging whether a first current water temperature detected by an acquired first temperature sensor is smaller than or equal to a first preset water temperature or not, if so, starting a water pump to operate to return water, and opening a water inlet and a first water outlet of a three-way valve to enable water in a first water outlet pipe to flow into the lower part of a water storage tank through a water return pipe;
and when the water return is determined to be finished, closing a first water outlet of the three-way valve and opening a second water outlet of the three-way valve, so that water in the water storage tank flows into the upper part of the water storage tank through the first water inlet and outlet pipe and the second water inlet and outlet pipe after being heated in the gas water heater through the first water inlet and outlet pipe and the first water inlet pipe, and the water pump stops running until the first current water temperature is larger than or equal to the preset water temperature of the user.
In one embodiment, the method further comprises the following steps:
when the current mode is a first preset mode and a water consumption signal of a water consumption point is obtained, judging whether the first current water temperature is less than or equal to a second preset water temperature;
if so, starting the water pump to operate, opening a water inlet and a first water outlet of the three-way valve, heating water in the gas water heater from the water supply port through the first water inlet pipe, and allowing the water to flow into the lower part of the water storage tank through the first water outlet pipe and the water return pipe until the first current water temperature is greater than or equal to the preset water temperature of the user.
In one embodiment, the water storage type hot water system further comprises: the second temperature sensor is connected with the controller and arranged at a preset position at the lower part of the water storage tank; the first temperature sensor is arranged at the upper part of the water storage tank and is in a preset position:
the method further comprises the following steps:
when the current mode is a second preset mode and water consumption information of a water consumption point is not obtained, judging whether a second current water temperature detected by a second temperature sensor is smaller than or equal to a third preset water temperature or not, if so, starting a water pump to run to return water, and opening a water inlet and a first water outlet of a three-way valve to enable water in a first water outlet pipe to flow into the lower part of a water storage tank through a water return pipe;
and when the water return is determined to be finished, closing a first water outlet of the three-way valve, opening a second water outlet of the three-way valve, and enabling water in the water storage tank to flow into the upper part of the water storage tank through a first water inlet and outlet pipe and a first water inlet pipe after being heated in the gas water heater through the first water inlet and outlet pipe and the second water inlet and outlet pipe until the first current water temperature and the second current water temperature are greater than or equal to the preset water temperature of a user, and stopping the operation of the water pump.
In one embodiment, the method further comprises the following steps:
if the current mode is a second preset mode and the water consumption signal of the water consumption point is obtained, judging whether the second current water temperature is less than or equal to a fourth preset water temperature;
if so, starting the water pump to operate, opening a water inlet and a first water outlet of the three-way valve, and enabling water of the water supply port, which passes through the first water inlet pipe, to flow into the lower part of the water storage tank through the first water outlet pipe and the water return pipe after being heated in the gas water heater, and stopping the water pump to operate until the first current water temperature and the second current water temperature are both greater than or equal to the preset water temperature of the user.
In one embodiment, the water storage type hot water system further comprises: the first water flow sensor is arranged on the internal pipeline;
in the method, the mode of determining the end of backwater is as follows:
when water return is started, a first water flow signal detected by a first water flow sensor and received by the gas water heater is acquired;
obtaining water return time according to the first water flow signal and the obtained water capacity of the first water outlet pipe;
and when the water return time is up, determining that the water return is finished.
In one embodiment, the water storage type hot water system further comprises: the second water flow sensor is arranged on the second water outlet pipe and connected with the controller;
the method further comprises the following steps:
and detecting whether a second water flow signal sent by a second water flow sensor is received, if so, determining to acquire the water using signal of the water using point, and otherwise, determining not to acquire the water using signal of the water using point.
The invention provides a water storage type hot water system and a control method, which at least have the following technical effects:
the invention relates to a water storage type hot water system and a control method thereof, wherein in the water storage type hot water system, a first water outlet pipe is communicated with one end of an internal pipeline of a gas water heater and a water inlet of a three-way valve, a water return pipe is communicated with a first water outlet of the three-way valve and a lower water inlet of a water storage tank, a first water inlet pipe is communicated with the other end of the internal pipeline and a first water inlet and outlet pipe and is also communicated with a water supply opening, a second water inlet and outlet pipe is communicated with a second water outlet of the three-way valve and is arranged at the upper part of the water storage tank, and. The water pump can be arranged on a first water outlet pipe or a water return pipe or a first water inlet pipe or an internal pipeline. Furthermore, the embodiment of the invention can control the three-way valve to change direction by the controller, so that cold water in the first water outlet pipe can be discharged into the lower water inlet of the water storage tank through the water return pipe at the beginning of preheating of the gas water heater, and then the three-way valve is controlled to change direction to inject water, which is heated in the gas water heater by the first water inlet pipe, of the water supply inlet into the upper part of the water storage tank through the first water outlet pipe and the second water inlet and outlet pipe. Furthermore, the three-way valve can be controlled to change the direction to perform circular preheating on the gas water heater through the first water inlet and outlet pipe, the first water inlet pipe, the first water outlet pipe and the water return pipe. The water storage type hot water system provided by the embodiment of the invention has the advantages that the system pipeline arrangement is more perfect, and the function of firstly returning water and then heating the upper part or circularly preheating the lower part can be realized, so that the waiting time for bath heating is effectively reduced, the energy consumption is reduced, and the water temperature fluctuation can be reduced.
Drawings
FIG. 1 shows a schematic diagram of a water storage hot water system according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of the electrical circuit of the water storage type hot water system in one embodiment of the present invention;
FIG. 3 illustrates another schematic diagram of a water storage hot water system in accordance with an embodiment of the present invention;
FIG. 4 is a schematic flow diagram illustrating a method for stored hot water control in accordance with an embodiment of the present invention;
FIG. 5 is a schematic flow chart illustrating a water storage type hot water control method according to an embodiment of the invention;
FIG. 6 is a schematic flow chart illustrating a water storage type hot water control method according to an embodiment of the invention;
fig. 7 is another flow chart of a water storage type hot water control method according to an embodiment of the 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.
The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
Hereinafter, the terms "including", "having", and their derivatives, which may be used in various embodiments of the present invention, are only intended to indicate specific features, numbers, steps, operations, elements, components, or combinations of the foregoing, and should not be construed as first excluding the existence of, or adding to, one or more other features, numbers, steps, operations, elements, components, or combinations of the foregoing.
Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which various embodiments of the present invention belong. The terms (such as those defined in commonly used dictionaries) should be interpreted as having a meaning that is consistent with their contextual meaning in the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein in various embodiments of the present invention.
Referring to fig. 1 and 2, in one embodiment, the present invention provides a water storage type hot water system comprising: the water heater comprises a gas water heater 10, a water storage tank 20, a first water outlet pipe 30, a second water outlet pipe 160, a water return pipe 40, a first water inlet pipe 50, a first water inlet and outlet pipe 60, a second water inlet and outlet pipe 70, a controller 80, a three-way valve 90, a first temperature sensor 100 and a water pump 300, wherein the three-way valve 90, the first temperature sensor 100 and the water pump 300 are respectively connected with the controller 80; the first temperature sensor 100 is arranged inside the water storage tank; the gas water heater 10 is connected to the controller 80 and has an internal pipe 130.
One end of the internal pipe 130 is communicated with the water inlet 102 of the three-way valve 90 through the first water outlet pipe 30; a first water outlet 103 of the three-way valve 90 is communicated with a lower water inlet 3 of the water storage tank 20 through a water return pipe 40; the first water inlet pipe 50 communicates the other end of the inner pipe 130 with one end of the first water inlet and outlet pipe 60 and serves to connect the water supply inlet 200; the other end of the first water inlet and outlet pipe 60 is communicated with a lower water inlet and outlet 5 of the water storage tank 20; one end of the second water inlet and outlet pipe 70 is communicated with the second water outlet 101 of the three-way valve 90, and the other end is arranged at the upper part of the water storage tank 20; the second water outlet pipe 160 is communicated with the second water inlet and outlet pipe 70 and is used for connecting water consumption points.
The water pump 300 is disposed on the first water outlet pipe 30 or the water return pipe 40 or the first water inlet pipe 50 or the internal pipe 130.
The water pump 300 may be disposed on the first water outlet pipe 30 or the water return pipe 40 or the first water inlet pipe 50 or the internal pipe 130 according to actual requirements. The number of water usage points is at least one, and includes, for example, water usage point 1 and water usage point 2. The controller 80 in this application may be a controller independent from the gas water heater 10 (the gas water heater itself is provided with a controller), that is, there may be two controllers in the present water storage type hot water system; the controller 80 in this application may also be the only controller in the present water storage type hot water system, and the controller controls the controlled electric devices of the water storage type hot water system, and the controller may be disposed inside the gas water heater, or disposed on the water storage tank.
The working principle of the system is described as follows: the first temperature sensor 100 sends the detected first current water temperature to the controller 80, if the controller 80 does not detect water consumption at a water consumption point, whether the first current water temperature is less than or equal to a first preset water temperature or not can be judged, if yes, the water pump 300 is started to operate, and the gas water heater 10 starts to heat and return water. At this time, the controller 80 controls the three-way valve 90 to open the water inlet 102 and the first water outlet 103, so that the water of the first water outlet pipe 30 flows into the lower portion of the storage tank 20 through the water return pipe 40. When the water return is determined to be finished, the controller 80 closes the first water outlet 103 of the three-way valve 90 and opens the second water outlet 101, so that the water in the water storage tank 20 flows into the upper part of the water storage tank 80 through the first water inlet and outlet pipe 30 and the second water inlet and outlet pipe 70 after being heated in the gas water heater 10 through the first water inlet and outlet pipe 60 and the first water inlet pipe 50, and the water pump 300 is stopped to operate until the first current water temperature is greater than or equal to the preset water temperature of the user, so as to finish the heating of the gas water heater 10.
Further, when the controller 80 detects that the water is used at the water use point, it is determined whether the first current water temperature is less than or equal to a second preset water temperature. If so, the water pump 300 is started to operate, the gas water heater 10 starts to heat, the water inlet 102 and the first water outlet 103 of the three-way valve 90 are opened, and the second water outlet 101 is closed, so that the water of the water supply port 200 passing through the first water inlet pipe 50 flows into the lower part of the water storage tank 20 through the first water outlet pipe 30 and the water return pipe 40 after being heated in the gas water heater 10 until the first current water temperature is greater than or equal to the preset water temperature of the user. Thereby not influencing the hot water on the upper part of the water storage tank 20 when bathing and reducing the fluctuation of the water temperature. Generally, the first preset water temperature is less than the second preset temperature. A temperature difference of 3 deg.c may be used.
The water storage type hot water system further optimizes the pipeline layout, so that the pipeline arrangement is more perfect and reasonable. Therefore, the upper part of the water storage tank is heated after cold water which is reserved in the first water outlet pipe 30 originally is discharged, bathing can be carried out without preheating water in the whole water storage tank 20, and waiting time of a user is shortened. Meanwhile, cold water at the initial preheating stage can be introduced to the lower part of the water storage tank 20 through water return operation, so that the influence on the water temperature at the upper part of the water storage tank 20 is reduced, and the water temperature of a user during bathing is more constant.
In the water storage type hot water system according to the embodiment of the present invention, the first water outlet pipe 30 communicates with one end of an internal pipeline of the gas water heater 10 and the water inlet 102 of the three-way valve 90, the water return pipe 40 communicates with the first water outlet 103 of the three-way valve 90 and the water inlet at the lower part of the water storage tank 20, the first water inlet pipe 50 communicates with the other end of the internal pipeline and the first water inlet and outlet pipe 60, and also communicates with the water supply port 200, the second water inlet and outlet pipe 70 communicates with the second water outlet 101 of the three-way valve 90 and is disposed at the upper part of the water storage tank 20, and the second water. The water pump 300 may be disposed on the first water outlet pipe 30, the water return pipe 40, the first water inlet pipe 50, or the internal pipeline 130. Furthermore, in the embodiment of the present invention, the water tank controller 80 may control the three-way valve 90 to change the direction such that the cold water in the first water outlet pipe 30 can be discharged into the lower water inlet of the water storage tank 20 through the water return pipe 40 at the beginning of the preheating of the gas water heater 10, and then control the three-way valve 90 to change the direction such that the water heated in the gas water heater 10 through the first water inlet pipe 50 at the water supply port 200 is injected into the upper portion of the water storage tank 20 through the first water outlet pipe 30 and the second water inlet/outlet pipe 70. Further, the three-way valve 90 can be controlled to perform the circular preheating of the gas water heater 10 through the first water inlet/outlet pipe 60, the first water inlet pipe 50, the first water outlet pipe 30 and the water return pipe 40. The water storage type hot water system provided by the embodiment of the invention has the advantages that the system pipeline arrangement is more perfect, and the function of firstly returning water and then heating the upper part or circularly preheating the lower part can be realized, so that the waiting time for bath heating is effectively reduced, the energy consumption is reduced, and the water temperature fluctuation can be reduced.
Referring to fig. 2 and 3, in a specific embodiment, further comprising: and a second temperature sensor 120 connected to the controller 80 and disposed at a lower predetermined position of the water storage tank 20.
The first temperature sensor 100 is disposed at a predetermined position on the upper portion of the water storage tank 20 and is lower than the other end of the second water inlet/outlet pipe 70.
For example, the controller 80 may set, as the trigger condition for heating, a case where the first current water temperature detected by the first temperature sensor 100 is less than or equal to a first preset water temperature when the water usage information of the water usage point is not acquired, and a case where the first current water temperature is less than or equal to a second preset water temperature when the water usage information of the water usage point is acquired. When water consumption at a water consumption point is not obtained, if the first current water temperature is less than or equal to the first preset water temperature, the controller 80 starts water return, and when the water return is finished, the water is circularly heated from the upper part of the water storage tank 20. Or when the controller 80 detects that the water consumption point uses water, if the first current water temperature is less than or equal to the second preset water temperature, heating is started from the lower part of the water storage tank.
In the embodiment of the invention, whether the first current water temperature detected by the first temperature sensor 100 is less than or equal to the first preset water temperature or the second preset water temperature or not can be used for controlling the starting of the water pump 300 to heat the gas water heater, so that the hot water in the water storage tank can be fully utilized, the effect of reducing energy consumption can be achieved, the bath waiting time can be reduced, and sufficient hot water can be continuously and timely provided during bathing.
For another example, the second temperature sensor 120 transmits the detected second current water temperature to the controller 80. The controller 80 may use, as the trigger condition for heating, a case where the second current water temperature detected by the second temperature sensor 120 is less than or equal to the third preset water temperature when the water usage information of the water usage point is not acquired, and a case where the second current water temperature is less than or equal to the fourth preset water temperature when the water usage information of the water usage point is acquired. When the water consumption at the water consumption point is not obtained, the controller 80 may determine whether the second current water temperature is less than or equal to a third preset water temperature, if so, start the water pump 300, start heating and return water for the gas water heater 10, and perform cyclic heating from the upper portion of the water storage tank 20 when the return water is finished until the first current water temperature detected by the first temperature sensor 100 and the second current water temperature detected by the second temperature sensor 120 are greater than or equal to the user preset water temperature. Further, when the controller 80 detects that the water consumption point uses water, it may determine whether the second current water temperature detected by the second temperature sensor 120 is less than or equal to a fourth preset water temperature, and if so, the water pump 300 is started to heat the water from the lower portion of the water storage tank 20 through the gas water heater 10 until the first current water temperature and the second current water temperature are greater than or equal to the user preset water temperature.
Generally, the third predetermined water temperature is less than or equal to the fourth predetermined water temperature.
In the water storage type hot water system according to the embodiment of the present invention, the second temperature sensor 120 is disposed at a preset position at the lower portion of the water storage tank 20, and further, when hot water is consumed for bathing to reduce the water temperature at the lower portion of the water storage tank 20, and when no water is consumed at the point of using water after bathing is finished, if the second current water temperature detected by the second temperature sensor 120 is less than or equal to the third preset water temperature, the controller 80 may start the water pump 300 in time to heat the gas water heater 10. If the water consumption point continuously uses water, and the second current water temperature detected by the second temperature sensor 120 is less than or equal to the fourth preset water temperature, the water is circularly heated from the lower part of the water storage tank 20 to the preset water temperature of the user. According to the embodiment of the invention, the water in the water tank can be heated in time through the second temperature sensor 120, so that constant-temperature hot water can be further provided for bathing, and the comfort level of bathing is improved.
Referring to fig. 3 and 2, in a specific embodiment, the method further includes: a first water flow sensor 150 disposed on the inner connecting pipe 130, and a second water flow sensor 140 disposed on the second water outlet pipe 160 and connected to the controller 80.
The controller 80 may further acquire a first water flow signal detected by the first water flow sensor 100 through the first water flow sensor 100. When the controller 80 starts the water pump to heat and return water to the gas water heater 10, if the water flow indicated in the first water flow signal is less than or equal to the preset water flow, it indicates that the gas water heater 10 is in a standby state, the gas water heater 10 does not start heating and returning water, otherwise, heating and returning water starts. Further, the second water flow sensor 140 sends the detected second water flow signal to the controller 80. The controller 80 may determine whether the water consumption information of the water consumption point is acquired by whether the second water flow signal sent by the second water flow sensor 140 is received.
According to the water storage type hot water system disclosed by the embodiment of the invention, the circuit module composition is more perfect, the reliability of water use detection and heating backwater is favorably improved, the timely and high-precision hot water preheating is effectively realized, and the energy consumption is reduced.
In one embodiment, the volume between the upper preset position and the other end of the second water inlet/outlet pipe 70 is between 2.5L and 3.5L in order to provide hot water timely and continuously.
In the water storage type hot water system according to the embodiment of the present invention, when the controller 80 detects that the first current water temperature is the first preset water temperature or the second preset water temperature through the first temperature sensor 100, it is determined that the remaining hot water storage capacity cannot satisfy the usage amount. At this time, the controller 80 can start the water pump 300 to control the gas water heater 10 to start heating, thereby being beneficial to continuously providing hot water for bathing, reducing water temperature fluctuation and fully utilizing the stored hot water in the water storage tank.
Referring to fig. 4 and fig. 1, in one embodiment, the present invention further provides a water storage type hot water control method applied to a water storage type hot water system;
the method comprises the following steps:
step S410: when the current mode is a first preset mode and water consumption information of a water consumption point is not acquired, whether the acquired first current water temperature detected by the first temperature sensor is smaller than or equal to a first preset water temperature or not is judged, if yes, the water pump is started to operate to return water, and a water inlet and a first water outlet of the three-way valve are opened, so that water in the first water outlet pipe flows into the lower portion of the water storage tank through the water return pipe.
The controller can obtain an operation mode issued by a user, and if the controller identifies that the current mode is a first preset mode, the controller enters the first preset mode. The first preset mode is a mode which takes the condition that the first current water temperature detected by the first temperature sensor is less than or equal to the first preset water temperature when the water consumption information of the water consumption point is not acquired, and the condition that the first current water temperature is less than or equal to the second preset water temperature when the water consumption information of the water consumption point is acquired as the trigger condition of heating. When the current mode is a first preset mode and water consumption information of a water consumption point is not acquired, whether the acquired first current water temperature is smaller than or equal to a first preset water temperature or not is judged, if yes, a water pump is started to operate, and the gas water heater starts to heat to return water. The second water outlet pipe can be provided with a water flow sensor connected with the controller, so that the controller can acquire water consumption information of the water points through the water flow sensor.
Step S420: and when the water return is determined to be finished, closing a first water outlet of the three-way valve and opening a second water outlet of the three-way valve, so that water in the water storage tank flows into the upper part of the water storage tank through the first water inlet and outlet pipe and the second water inlet and outlet pipe after being heated in the gas water heater through the first water inlet and outlet pipe and the first water inlet pipe, and the water pump stops running until the first current water temperature is larger than or equal to the preset water temperature of the user.
And when the controller determines that the water return is finished, closing the first water outlet of the three-way valve and opening the second water outlet so as to enable the three-way valve to change the direction, and starting to heat the upper part of the water storage tank until the first current water temperature is greater than or equal to the preset water temperature of the user. The water return device is used for draining water reserved in the first water outlet pipe into the lower part of the water storage tank during heating, so that water with lower temperature is prevented from flowing into the upper part of the water storage tank to influence the water temperature of the upper part.
It should be noted that, for the limitation of the description of the water storage type hot water system in the embodiment of the present invention, reference may be made to the above description of the water storage type hot water system, and details are not repeated herein.
According to the water storage type hot water control method, the controller is in the first preset mode, if the water consumption point has no water consumption information, the first current water temperature detected by the first temperature sensor can be judged, and therefore the water pump is started to control the gas water heater to heat water so as to return water. And when the first current temperature reaches the preset water temperature of the user, the water pump can be stopped to operate, and the heating of the gas water heater is finished. According to the method, when no water is used by a user, the water in the water storage tank is pumped into the gas water heater to be heated and flows into the gas water heater from the upper part of the water storage tank, so that hot water can be supplied as soon as possible, bathing can be carried out without heating the water in the whole water storage tank, and the waiting time of the user is favorably shortened.
Furthermore, the water storage type hot water control method provided by the embodiment of the invention is applied to a water storage type hot water system, and further can control the three-way valve to change the direction through the controller, so that cold water in the first water outlet pipe can be discharged into the lower water inlet of the water storage tank through the water return pipe at the beginning of preheating of the gas water heater, and then the three-way valve is controlled to change the direction to inject water, which is heated in the gas water heater through the first water inlet pipe, of the water supply opening into the upper part of the water storage tank through the first water outlet pipe and the second water inlet and outlet pipe. According to the water storage type hot water control method provided by the embodiment of the invention, the pipeline arrangement of the water storage type hot water system is more perfect, and the function of heating the upper part after returning water can be realized, so that the waiting time for bath heating is effectively reduced, the energy consumption is reduced, and the water temperature fluctuation can be reduced.
Referring to fig. 5, in a specific embodiment, the method further includes:
step S510: and when the current mode is the first preset mode and the water consumption signal of the water consumption point is obtained, judging whether the first current water temperature is less than or equal to the second preset water temperature.
Step S520: if so, starting the water pump to operate, opening a water inlet and a first water outlet of the three-way valve, heating water in the gas water heater from the water supply port through the first water inlet pipe, and allowing the water to flow into the lower part of the water storage tank through the first water outlet pipe and the water return pipe until the first current water temperature is greater than or equal to the preset water temperature of the user.
The first preset water temperature is less than the second preset water temperature, preferably, the temperature difference between the first preset water temperature and the second preset water temperature is about 3 ℃. Therefore, the reduction of the hot water amount can be dealt with more quickly, and sufficient hot water can be provided for bathing in time when water is used at a water using point.
According to the water storage type hot water control method provided by the embodiment of the invention, hot water in the water storage tank can be fully utilized for bathing, and meanwhile, the water is heated from the lower part of the water storage tank, so that the influence on the water temperature of the upper part of the water storage tank is reduced, the water temperature fluctuation during bathing is reduced, and the bathing comfort level is further improved.
Referring to fig. 6 and 3, in a specific embodiment, the water storage type hot water system further includes: a second temperature sensor 120 connected to the controller and disposed at a lower predetermined position of the water storage tank 20; the first temperature sensor 100 is provided at an upper predetermined position of the water storage tank 20.
The method further comprises the following steps:
step S610: when the current mode is the second preset mode and water consumption information of a water consumption point is not obtained, whether the second current water temperature detected by the second temperature sensor is smaller than or equal to a third preset water temperature or not is judged, if yes, the water pump is started to operate to return water, a water inlet and a first water outlet of the three-way valve are opened, and water in the first water outlet pipe flows into the lower portion of the water storage tank through the water return pipe.
Preferably, the first preset water temperature is less than or equal to the third preset water temperature, and the temperature difference can be about 2.5 ℃. When water is used, the water temperature at the lower part of the water storage tank is reduced before the water temperature at the upper part, so that sufficient bathing hot water is provided in time. When the controller is in the second preset mode, if the water consumption information of the water consumption point is not obtained, whether the second current water temperature is smaller than or equal to a third preset water temperature or not can be judged to determine whether the water pump is started to heat the gas water heater for returning water, if yes, the gas water heater is started, and if not, the gas water heater is not started. The second preset mode is a mode that when the water consumption information of the water consumption point is not acquired, the second current water temperature detected by the second temperature sensor is smaller than or equal to a third preset water temperature, and when the water consumption information of the water consumption point is acquired, the second current water temperature is smaller than or equal to a fourth preset water temperature and serves as a heating triggering condition.
Step S620: and when the water return is determined to be finished, closing a first water outlet of the three-way valve, opening a second water outlet of the three-way valve, and enabling water in the water storage tank to flow into the upper part of the water storage tank through a first water inlet pipe and a second water inlet pipe after being heated in the gas water heater through the first water inlet pipe and the first water outlet pipe until the first current water temperature and the second current water temperature are greater than or equal to the preset water temperature of a user, and finishing the heating of the gas water heater.
In order to further prevent part of stored water between the first temperature sensor and the second temperature sensor in the water storage tank from not reaching the expected water temperature so as to cause the condition of unstable fluctuation of the water temperature during bathing, the upper part of the water in the water storage tank can be heated through the first water outlet pipe and the second water inlet and outlet pipe until the first current water temperature and the second current water temperature are more than or equal to the preset water temperature of a user, and the water pump is stopped to operate so as to finish heating of the gas water heater.
Further, since the temperature of water in the water storage tank gradually decreases from the lower portion to the upper portion when the water is used, the temperature of water detected by the first temperature sensor gradually decreases. If the current mode is a first preset mode and the first current water temperature is less than or equal to the first preset water temperature when no water is used at the water consumption point, the water below the first temperature sensor in the water storage tank is relatively cold, or the first current water temperature is less than or equal to the second preset water temperature when the water is used at the water consumption point, the residual hot water in the water storage tank is about to be used up, and at the moment, the water pump can be started to operate so that the gas water heater starts to heat. The embodiment of the invention is beneficial to fully using the hot water in the water storage tank, further, the water can be heated from the upper part of the water storage tank, bathing can be carried out without heating the water of the whole water storage tank, and further, the first preset mode achieves the effect of energy saving.
According to the water storage type hot water control method, the first temperature sensor is arranged at the upper preset position of the water storage tank, and the second temperature sensor is arranged at the lower preset position of the water storage tank. Furthermore, the energy-saving effect can be achieved when the shower bath enters the first preset mode, and the effect of providing sufficient hot water for the shower bath in time can be achieved when the shower bath enters the second preset mode. Entering a first preset mode to work, wherein the hot water above a first temperature sensor is required to meet the requirement generally; and entering a second preset mode to work, wherein the hot water above the second temperature sensor is required to meet the requirement. Therefore, the first preset mode is a more energy-saving working mode.
Further, when the controller is in a second preset mode, if the water consumption information of the water consumption point is not obtained, when the water temperature of the water at the lower part of the water storage tank is lower than a third preset water temperature, the water pump can be started in time to enable the gas water heater to start heating, water return is carried out at the beginning of heating, the situation that cold water is poured into the upper part of the water storage tank to influence the water temperature of the upper part is prevented, and heating is carried out from the upper part after the water return is finished until the first current water temperature and the second current water temperature are larger than or equal to the preset water. The embodiment of the invention can continuously provide sufficient bath hot water to meet the bath requirements of users, and simultaneously can keep the water temperatures of the upper part and the lower part in the water storage tank consistent or close.
Referring to fig. 7, in a specific embodiment, the method further includes:
step S710: and if the current mode is the second preset mode and the water consumption signal of the water consumption point is obtained, judging whether the second current water temperature is less than or equal to the fourth preset water temperature.
When water is used, the water temperature at the lower part of the water storage tank is reduced before the water temperature at the upper part, so that sufficient hot water for bathing is provided. And under a second preset mode, if the controller acquires a water using signal of the water using point, whether the second current water temperature detected by the second temperature sensor is smaller than or equal to a fourth preset water temperature or not is judged so as to determine whether the water pump is started to enable the gas water heater to start heating or not. Preferably, the third preset water temperature is lower than the fourth preset water temperature, and the temperature difference can be about 3 ℃. The second preset water temperature is less than or equal to the fourth preset water temperature, and the temperature difference can be about 2.5 ℃.
Step S720: if so, starting the water pump to operate, opening a water inlet and a first water outlet of the three-way valve, and enabling water of the water supply port, which passes through the first water inlet pipe, to flow into the lower part of the water storage tank through the first water outlet pipe and the water return pipe after being heated in the gas water heater, and stopping the water pump to operate until the first current water temperature and the second current water temperature are both greater than or equal to the preset water temperature of the user.
And when the second current water temperature is lower than the third preset water temperature, starting the water pump to heat the gas water heater, opening a water inlet and a first water outlet of the three-way valve, allowing one part of water at the water supply inlet to flow out of a water inlet and a water outlet at the lower part of the water storage tank through the first water inlet pipe, heating the other part of the water in the gas water heater through the first water inlet pipe, and allowing the other part of the water to flow into the lower part of the water storage tank through the first water outlet pipe and the water return pipe until the first current water temperature and the second current water temperature are both greater than or equal to the preset water temperature of the user.
According to the water storage type hot water control method provided by the embodiment of the invention, after the second preset mode is entered, if the water consumption information of the water consumption point is obtained, when the water at the lower part of the water storage tank is reduced to the third preset water temperature due to the fact that the water at the water supply opening flows into the water storage tank during bathing, the water pump can be started to operate in time to heat the lower part of the water storage tank until the upper part and the lower part of the water temperature of the whole tank of water reach the preset water temperature of a user through the first temperature sensor and the second temperature sensor. The embodiment of the invention can provide sufficient hot water for bathing while reducing the influence on the temperature of the upper water, thereby meeting the bathing requirements of a plurality of people.
Referring to fig. 3, in a specific embodiment, the water storage type hot water system further includes: a first water flow sensor 150 disposed on the internal conduit 130.
The way of determining the end of the backwater is as follows:
step S10: when water return is started, a first water flow signal detected by a first water flow sensor is obtained.
Step S20: and obtaining the water return time according to the first water flow signal and the obtained water capacity of the first water outlet pipe.
Step S30: and when the water return time is up, determining that the water return is finished.
According to the first water flow signal detected by the first water flow sensor and the water capacity of the first water outlet pipe, the time for discharging the water reserved in the first water outlet pipe originally is calculated from the beginning of water return to the end of water return, namely the water return time. And then the controller can determine whether the water return is finished according to the water return time when the water return is started.
According to the water storage type hot water control method provided by the embodiment of the invention, the water return time can be obtained according to the first water flow signal and the water capacity of the first water outlet pipe, so that the judgment precision of water return can be improved, hot water can be timely supplemented to the water storage tank, the time of bath waiting can be reduced, the water temperature fluctuation can be reduced, and the constant-temperature bath function can be optimized.
Referring to fig. 3, in one specific embodiment, the water storage type hot water system further includes: and a second water flow sensor 140 disposed on the second water outlet pipe 160 and connected to the controller.
The method further comprises the following steps:
step S50: and detecting whether a second water flow signal sent by a second water flow sensor is received or not, if so, determining to acquire the water using signal of the water using point, and otherwise, determining not to acquire the water using signal of the water using point.
The water storage type hot water control method provided by the embodiment of the invention is beneficial to improving the water consumption detection precision of the water consumption point, so that the bathing requirement is met in time, and the reliability is improved.
In the embodiments provided in the present application, it should be understood that the disclosed apparatus and method can be implemented in other ways. The apparatus embodiments described above are merely illustrative and, for example, the flowchart and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of apparatus, methods and computer program products according to various embodiments of the present invention. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that, in alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.
In addition, each functional module or unit in each embodiment of the present invention may be integrated together to form an independent part, or each module may exist separately, or two or more modules may be integrated to form an independent part.
The functions, if implemented in the form of software functional modules and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention or a part of the technical solution that contributes to the prior art in essence can be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a smart phone, a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention.
Claims (10)
1. A water storage type hot water system, comprising: the water heater comprises a gas water heater (10), a water storage tank (20), a first water outlet pipe (30), a second water outlet pipe (160), a water return pipe (40), a first water inlet pipe (50), a first water inlet and outlet pipe (60), a second water inlet and outlet pipe (70), a controller (80), a three-way valve (90), a first temperature sensor (100) and a water pump (300), wherein the three-way valve (90), the first temperature sensor (100) and the water pump are respectively connected with the controller (80); the first temperature sensor (100) is arranged inside the water storage tank (20); the gas water heater (10) is connected with the controller (80) and is internally provided with an internal pipeline (130);
one end of the internal pipeline (130) is communicated with the water inlet (102) of the three-way valve (90) through a first water outlet pipe (30); a first water outlet (103) of the three-way valve (90) is communicated with a lower water inlet (3) of the water storage tank (20) through a water return pipe (40); the first water inlet pipe (50) communicates the other end of the internal pipe (130) with one end of the first water inlet/outlet pipe (60) and is used for connecting a water supply port; the other end of the first water inlet and outlet pipe (60) is communicated with a water inlet and outlet (5) at the lower part of the water storage tank (20); one end of the second water inlet and outlet pipe (70) is communicated with a second water outlet (101) of the three-way valve (90), and the other end of the second water inlet and outlet pipe extends into the upper part of the inner side of the water storage tank (20); the second water outlet pipe (160) is communicated with the second water inlet and outlet pipe (70) and is used for connecting a water using point;
the water pump (300) is arranged on the first water outlet pipe (30), the water return pipe (40), the first water inlet pipe (50) or the internal pipeline (130).
2. The water storage hot water system of claim 1, further comprising: the second temperature sensor (120) is connected with the controller (80) and is arranged at a preset position at the lower part of the water storage tank (20);
the first temperature sensor (100) is arranged at a preset position at the upper part of the water storage tank and is lower than the other end of the second water inlet and outlet pipe (70).
3. A water storage hot water system according to claim 2, wherein the volume between the upper preset position and the other end of the second water inlet/outlet pipe (70) is between 2.5L and 3.5L.
4. The water storage hot water system of claim 1, further comprising: the water flow control device comprises a first water flow sensor (150) arranged on the internal pipeline (130) and a second water flow sensor (140) arranged on the second water outlet pipe (160) and connected with the controller (80).
5. A water storage type hot water control method, which is applied to the water storage type hot water system according to claim 1;
the method comprises the following steps:
when the current mode is a first preset mode and water consumption information of a water consumption point is not acquired, judging whether a first current water temperature detected by an acquired first temperature sensor (100) is smaller than or equal to a first preset water temperature or not, if so, starting a water pump (300) to run to return water, and opening a water inlet and a first water outlet of a three-way valve (90) to enable water in a first water outlet pipe (30) to flow into the lower part of a water storage tank (20) through a water return pipe;
when the water return is determined to be finished, closing a first water outlet of the three-way valve (90) and opening a second water outlet of the three-way valve (90), so that water in the water storage tank (30) flows into the upper part of the water storage tank (20) through the first water outlet pipe (30) and the second water inlet pipe (70) after being heated in the gas water heater (10) through the first water inlet and outlet pipe (50) and the first water inlet pipe (50), and the water pump (300) is stopped to operate until the first current water temperature is larger than or equal to the preset water temperature of a user.
6. The water storage type hot water control method according to claim 5, further comprising:
when the current mode is the first preset mode and a water consumption signal of the water consumption point is obtained, judging whether the first current water temperature is smaller than or equal to a second preset water temperature;
if so, starting the water pump (300) to operate, opening a water inlet and a first water outlet of the three-way valve (90), and enabling water at the water supply inlet, which passes through the first water inlet pipe, to flow into the lower part of the water storage tank (20) through the first water outlet pipe (30) and the water return pipe (40) after being heated in the gas water heater (10) until the first current water temperature is greater than or equal to the preset water temperature of the user, and stopping the operation of the water pump (300).
7. The storage hot water control method of claim 5, wherein the storage hot water system further comprises: the second temperature sensor (120) is connected with the controller (80) and is arranged at a preset position at the lower part of the water storage tank; the first temperature sensor (100) is arranged at a preset position at the upper part of the water storage tank;
the method further comprises the following steps:
when the current mode is a second preset mode and water consumption information of the water consumption point is not obtained, whether the second current water temperature detected by the second temperature sensor (120) is smaller than or equal to a third preset water temperature is judged, if yes, the water pump (300) is started to operate to return water, and a water inlet and a first water outlet of the three-way valve (90) are opened, so that water in the first water outlet pipe (30) flows into the lower part of the water storage tank (20) through the water return pipe;
when the water return is determined to be finished, closing a first water outlet of the three-way valve (90), opening a second water outlet of the three-way valve (90), and enabling water in the water storage tank (20) to flow into the upper part of the water storage tank (20) through the first water inlet and outlet pipe and the second water inlet and outlet pipe after being heated in the gas water heater through the first water inlet and outlet pipe and the first water inlet pipe until the first current water temperature and the second current water temperature are greater than or equal to the preset water temperature of the user, and stopping the operation of the water pump (300).
8. The water storage type hot water control method according to claim 7, further comprising:
if the current mode is the second preset mode and the water consumption signal of the water consumption point is obtained, judging whether the second current water temperature is less than or equal to a fourth preset water temperature;
if so, starting the water pump (300) to operate, opening a water inlet and a first water outlet of the three-way valve (90), and enabling water at the water supply inlet, which passes through the first water inlet pipe, to flow into the lower part of the water storage tank (20) through the first water outlet pipe and the water return pipe after being heated in the gas water heater (10) until the first current water temperature and the second current water temperature are both greater than or equal to the preset water temperature of the user, and stopping the operation of the water pump (300).
9. The storage hot water control method of claim 5, wherein the storage hot water system further comprises: a first water flow sensor (150) disposed on the inner conduit;
in the method, the mode of determining the end of the water return is as follows:
when water return is started, acquiring a first water flow signal detected by the first water flow sensor (150);
according to the first water flow signal and the acquired water capacity of the first water outlet pipe (30), water return time is obtained;
and when the water return time is up, determining that the water return is finished.
10. The storage type hot water control method according to any one of claims 5 to 9, wherein the storage type hot water system further comprises: the second water flow sensor (140) is arranged on the second water outlet pipe (160) and is connected with the controller (80);
the method further comprises the following steps:
and detecting whether a second water flow signal sent by the second water flow sensor (140) is received, if so, determining to acquire the water use signal of the water use point, and otherwise, determining not to acquire the water use signal of the water use point.
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| CN202011624798.9A CN112728760A (en) | 2020-12-31 | 2020-12-31 | Water storage type water heater system and control method |
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| CN202011624798.9A CN112728760A (en) | 2020-12-31 | 2020-12-31 | Water storage type water heater system and control method |
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