CN117029278A - Gas water heater and control method thereof - Google Patents
Gas water heater and control method thereof Download PDFInfo
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- CN117029278A CN117029278A CN202311092422.1A CN202311092422A CN117029278A CN 117029278 A CN117029278 A CN 117029278A CN 202311092422 A CN202311092422 A CN 202311092422A CN 117029278 A CN117029278 A CN 117029278A
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- water
- pipeline
- pipe section
- valve
- pipe
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 650
- 238000000034 method Methods 0.000 title claims abstract description 30
- 230000017525 heat dissipation Effects 0.000 claims description 49
- 238000007599 discharging Methods 0.000 claims description 35
- 238000001514 detection method Methods 0.000 claims description 14
- 238000004891 communication Methods 0.000 claims description 9
- 238000001816 cooling Methods 0.000 claims description 7
- 230000005855 radiation Effects 0.000 claims description 5
- 239000003779 heat-resistant material Substances 0.000 claims description 4
- 238000012544 monitoring process Methods 0.000 claims description 4
- 230000000903 blocking effect Effects 0.000 claims description 3
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 abstract description 5
- 239000007789 gas Substances 0.000 description 49
- JLVVSXFLKOJNIY-UHFFFAOYSA-N Magnesium ion Chemical compound [Mg+2] JLVVSXFLKOJNIY-UHFFFAOYSA-N 0.000 description 9
- 229910052500 inorganic mineral Inorganic materials 0.000 description 9
- 229910001425 magnesium ion Inorganic materials 0.000 description 9
- 239000011707 mineral Substances 0.000 description 9
- 229910001424 calcium ion Inorganic materials 0.000 description 8
- BHPQYMZQTOCNFJ-UHFFFAOYSA-N Calcium cation Chemical compound [Ca+2] BHPQYMZQTOCNFJ-UHFFFAOYSA-N 0.000 description 7
- 230000009286 beneficial effect Effects 0.000 description 7
- 229910052751 metal Inorganic materials 0.000 description 7
- 239000002184 metal Substances 0.000 description 7
- 239000000126 substance Substances 0.000 description 6
- 239000008399 tap water Substances 0.000 description 6
- 235000020679 tap water Nutrition 0.000 description 6
- 230000009471 action Effects 0.000 description 4
- 238000002485 combustion reaction Methods 0.000 description 4
- 230000006870 function Effects 0.000 description 4
- 229910052755 nonmetal Inorganic materials 0.000 description 3
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 2
- 239000011575 calcium Substances 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000000779 smoke Substances 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 206010053615 Thermal burn Diseases 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003657 drainage water Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 230000006855 networking Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 239000005060 rubber Substances 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- 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
- F24H9/16—Arrangements for water drainage
-
- 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
- F24H15/10—Control of fluid heaters characterised by the purpose of the control
- F24H15/14—Cleaning; Sterilising; Preventing contamination by bacteria or microorganisms, e.g. by replacing fluid in tanks or conduits
-
- 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
- F24H15/20—Control of fluid heaters characterised by control inputs
- F24H15/281—Input from user
-
- 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
- F24H15/32—Control of valves of switching valves
-
- 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
- F24H15/40—Control of fluid heaters characterised by the type of controllers
- F24H15/414—Control of fluid heaters characterised by the type of controllers using electronic processing, e.g. computer-based
- F24H15/421—Control of fluid heaters characterised by the type of controllers using electronic processing, e.g. computer-based using pre-stored data
- F24H15/429—Control of fluid heaters characterised by the type of controllers using electronic processing, e.g. computer-based using pre-stored data for selecting operation modes
-
- 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
- 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
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)
- Computer Hardware Design (AREA)
- Instantaneous Water Boilers, Portable Hot-Water Supply Apparatuses, And Control Of Portable Hot-Water Supply Apparatuses (AREA)
Abstract
The invention relates to the technical field of water heaters, and discloses a gas water heater and a control method thereof, wherein the water heater comprises a heat exchanger, a water inlet pipeline, a water outlet pipeline and a residual water discharge device, and the residual water discharge device comprises a connecting pipeline arranged between the water inlet pipeline and the water outlet pipeline, a water discharge pipeline communicated with the water outlet pipeline and valves respectively arranged on the water inlet pipeline and the water outlet pipeline; the valve is suitable for switching and controlling normal circulation of the water inlet pipeline and the water outlet pipeline, or controlling conduction of the connecting pipeline and the water inlet pipeline and/or the water outlet pipeline, or controlling conduction of the water discharge pipeline and the water outlet pipeline. When a user stops using water, the water inlet end of the water inlet pipeline can be controlled to be blocked with the water outlet pipeline and communicated with the connecting pipeline, and the water outlet pipeline is communicated with the water discharge pipeline, so that the water stored in the pipeline inside the water heater is discharged in time, the residence time of the water in the pipeline is reduced, and the problem of forming scale or rust pipeline is avoided.
Description
Technical Field
The invention relates to the technical field of water heaters, in particular to a gas water heater and a control method thereof.
Background
At present, water heaters are widely popularized and gradually become indispensable household appliances in daily life, and particularly gas water heaters can rapidly heat domestic water and are used by more families.
However, since the daily water contains more minerals such as calcium ions and magnesium ions, the hardness of the water is high, and when the gas water heater is used, water is still accumulated in the pipeline, and the water in the pipeline is easy to generate scale and adhere to the pipe wall in a static state, so that bacteria are bred, and the flow rate of water flow is influenced.
In addition, the pipeline of the water heater is generally a metal component, and a plurality of metal detection parts are arranged, so that the pipeline and the detection parts made of metal are soaked in accumulated water with more mineral substances for a long time, calcium ions and magnesium ions of the water quality can be adsorbed to form scale, and the accumulated water can rust the pipeline and the detection parts to seriously influence the normal use of the gas water heater.
Disclosure of Invention
In view of the above, the invention provides a gas water heater and a control method thereof, which are used for solving the problems that after the gas water heater in the prior art is used, water stored in a pipeline inside the gas water heater cannot be discharged in time, so that scales or rust are formed on the pipeline and detection parts on the pipeline, and normal use is affected.
In a first aspect, the present invention provides a gas water heater comprising:
a heat exchanger;
the water inlet pipeline and the water outlet pipeline are respectively connected with the heat exchanger;
the residual water discharge device comprises a connecting pipeline arranged between the water inlet pipeline and the water outlet pipeline, a water discharge pipeline communicated with the water outlet pipeline, and valves respectively arranged on the water inlet pipeline and the water outlet pipeline;
the valve is suitable for switching and controlling normal circulation of the water inlet pipeline and the water outlet pipeline, or controlling conduction of the connecting pipeline and the water inlet pipeline and/or the water outlet pipeline, or controlling conduction of the water discharge pipeline and the water outlet pipeline.
The beneficial effects are that: through the surplus water discharging device, after the water heater is used, the water discharging pipeline is controlled to be communicated with the water outlet pipeline, water stored in the water heater pipeline is timely discharged, the residence time of the water in the pipeline is reduced, and the phenomenon that metal components such as the pipeline are soaked in accumulated water for a long time to form scale or rust the pipeline is avoided. In addition, through the connecting line that sets up between inlet tube and outlet pipe, because connecting line adopts non-metal heat-resistant material to make, compare in inlet tube, it is difficult to scale deposit or by corrosion, when the ponding in the drainage water heater pipeline, switch to the state that inlet end is linked together with the connecting line and inlet tube is cut off through valve control inlet tube, thereby can effectually avoid rivers to gush into in the inlet tube under the water pressure effect, cause the problem that surplus water in the pipeline is difficult to drain, and after the user finishes the water heater, can also control connecting line and inlet tube, the heat transfer pipeline in outlet tube and the heat exchanger forms closed loop's radiating circuit, supplementary heat exchanger carries out quick heat dissipation, reduce the temperature rise of heat exchanger, make the heat exchanger can quick cooling down, the problem that the water temperature is too high appears when avoiding the user to use once more in the short time.
In an alternative embodiment, a valve includes:
the first valve is arranged on the water inlet pipeline, one end of the connecting pipeline is connected to the first valve, and the water inlet pipeline is divided into a first pipe section and a second pipe section by the first valve;
the second valve is arranged on the water outlet pipeline, the other end of the connecting pipeline and the water draining pipeline are connected to the second valve, and the water outlet pipeline is divided into a third pipe section and a fourth pipe section by the second valve;
the first valve is suitable for switching and controlling the normal circulation of the water inlet pipeline, or controlling the connection pipeline to be communicated with the first pipe section, or controlling the connection pipeline to be communicated with the second pipe section;
the second valve is suitable for switching and controlling the normal circulation of the water outlet pipeline, or controlling the connection pipeline to be communicated with the third pipe section, or controlling the connection pipeline to be communicated with the fourth pipe section, or controlling the water outlet pipeline to be communicated with the drainage pipeline.
The beneficial effects are that: the valve is used for switching the conducting state of each pipeline by adopting the first valve and the second valve, so that the water heater can be switched among various functions such as normal water use, residual water drainage, auxiliary heat dissipation on the heat exchanger and the like, and the structure is simple and reliable, and the water heater is easy to realize.
In an alternative embodiment, the first valve and the second valve are manual valves or solenoid valves.
In an alternative embodiment, the first valve is a three-way valve, the first valve having three ports, wherein one port is adapted to be connected to one end of the connecting line and the other two ports are connected to the first pipe section and the second pipe section, respectively;
the second valve is a four-way valve, and is provided with four valve ports, wherein one valve port is suitable for being connected with the other end of the connecting pipeline, and the other three valve ports are respectively connected with the third pipe section, the fourth pipe section and the drainage pipeline.
The beneficial effects are that: the first valve adopts the three-way valve, the second valve adopts the four-way valve, and the water heater can be switched among a plurality of modes through two valves, so that the structure is simple and the assembly is convenient.
In an alternative embodiment, the first pipe section is communicated with the water inlet end of the water inlet pipeline, the second pipe section is communicated with the heat exchanger, the third pipe section is communicated with the heat exchanger, and the fourth pipe section is communicated with the water outlet end of the water outlet pipeline;
the gas water heater includes use mode, surplus water mode, wherein:
when the gas water heater is in a use mode, the heat exchanger is in a working state, the water inlet pipeline and the water outlet pipeline are in a circulation state, and external water enters from the water inlet pipeline and flows out from the water outlet pipeline after being heated by the heat exchanger;
When the gas water heater is in the residual water discharging mode, the heat exchanger is in a closed state, the water inlet pipeline is in a state that the first pipe section is communicated with the connecting pipeline and the first pipe section is blocked from the second pipe section, the water outlet pipeline is in a state that the third pipe section is communicated with the water discharging pipeline and the third pipe section is blocked from the fourth pipe section, and residual water in the second pipe section, the heat exchanger and the third pipe section can be discharged through the water discharging pipeline.
The beneficial effects are that: when a user uses the water heater, the water inlet pipeline, the water outlet pipeline and the heat exchanger are controlled to be in a circulation state through the first valve and the second valve, tap water enters from the water inlet end of the water inlet pipeline and is discharged from the water outlet pipeline after flowing through the heat exchanger for being used by the user after being heated. After the user uses the water heater, the first valve controls the water inlet pipeline to be switched to a state that the first pipe section is communicated with the connecting pipeline and the first pipe section and the second pipe section are blocked, so that the problem that tap water can flow into the second pipe section, the third pipe section and the heat exchanger under the action of water pressure when the user does not use the water heater can be effectively avoided, and because the second pipe section and the third pipe section are closer to the heat exchanger than the first pipe section and the second pipe section, the water temperature is higher, mineral substances such as calcium, magnesium ions and the like in water are easier to be adsorbed to form scale, the first pipe section and the second pipe section are cut off through the first valve, the problem that scale is easy to form in the second pipe section, the third pipe section and the heat exchanger can be effectively avoided, and meanwhile the problem that the water is not easy to drain when residual water is discharged can be avoided.
In an alternative embodiment, the gas water heater further comprises an auxiliary heat dissipation mode, and when the gas water heater is in the auxiliary heat dissipation mode, the connecting pipeline is respectively communicated with the second pipe section and the third pipe section, so that the second pipe section, the heat exchanger, the third pipe section and the connecting pipeline form a closed loop heat dissipation circuit;
the gas water heater also comprises a water flow driving piece arranged on the heat dissipation loop, and the water flow driving piece is suitable for driving residual water in the heat dissipation loop to circularly flow in the heat dissipation loop after the gas water heater is closed so as to conduct heat dissipation and cooling on the heat exchanger.
The beneficial effects are that: after the water heater is shut down, the temperature around the heat exchanger is still very high, and the residual temperature of the heat exchanger is still high, so that after a user finishes using the water heater, the first valve and the second valve control connecting pipeline are respectively communicated with the second pipe section and the third pipe section, so that the second pipe section, the heat exchanger, the third pipe section and the connecting pipeline form a closed-loop heat dissipation loop, residual water in the heat dissipation loop of the water flow driving part circularly flows in the heat dissipation loop, the residual water absorbs heat and evaporates when the residual water approaches the heat exchanger, the heat of the heat exchanger and the air around the heat exchanger is reduced, the temperature rise of the heat exchanger is reduced, the heat is taken away by the water flow circulation to assist the heat exchanger to dissipate heat and cool, the excessive temperature rise of the heat exchanger is avoided, and when the user uses water again in a short time, the water outlet temperature is higher, and the user is scalded or the user experience is affected.
In an alternative embodiment, the water flow driver comprises a water pump arranged on the second pipe section of the water inlet pipe.
The beneficial effects are that: through setting up the rivers driving piece on the second pipeline section of water inlet pipeline for the rivers driving piece not only can be in supplementary heat dissipation mode drive rivers circulation flow in the cooling circuit, can also be in the drainage mode, the residual water in second pipeline section and the third pipeline section and the heat exchanger is discharged to the drainage pipeline.
In an alternative embodiment, the gas water heater further comprises an anti-scaling mode, when the gas water heater is in the anti-scaling mode, the first pipe section, the connecting pipeline and the fourth pipe section are in a mutually-conducted state, and the second pipe section and the third pipe section are in a state of being blocked from external water inlet.
The beneficial effects are that: when the user does not use the water heater, the first pipe section, the connecting pipeline and the fourth pipe section are controlled to be in a state of being communicated with each other through the first valve and the second valve, and the second pipe section and the third pipe section are in a state of being blocked with external water inlet, so that tap water cannot flow into the second pipe section, the third pipe section and the heat exchanger under the action of water pressure when the user does not use the water heater, and because the second pipe section and the third pipe section are closer to the heat exchanger than the first pipe section and the second pipe section, the temperature of water in the second pipe section is relatively higher, mineral substances such as calcium ions and magnesium ions in water are absorbed more easily to form scale, and the problem that the second pipe section and the third pipe section are easy to scale is avoided. In addition, the problem that the temperature detection part is easy to scale after being soaked in residual water of a pipeline for a long time can be effectively avoided.
In an alternative embodiment, the gas water heater further comprises a temperature sensing member disposed on the third pipe section of the water outlet line.
In an alternative embodiment, the gas water heater further comprises a flow sensing member disposed on the first section of the water inlet line.
In a second aspect, the present invention further provides a control method of a gas water heater, which is applicable to the gas water heater in any one of the above embodiments, and the control method includes:
starting a residual water discharging mode;
the water inlet end of the control water inlet pipeline is blocked with the water outlet pipeline and is communicated with the connecting pipeline;
the water outlet pipeline is controlled to be communicated with the water draining pipeline, and residual water in the internal pipeline of the water heater is discharged.
In an alternative embodiment, before the water inlet end of the water inlet pipeline is controlled to be blocked from the water outlet pipeline and communicated with the connecting pipeline, and then the water outlet pipeline is controlled to be communicated with the water discharge pipeline, the following steps are further executed:
starting an auxiliary heat dissipation mode;
controlling the second valve to act, and switching the water outlet pipe from a normal circulation state to a state of being communicated with the connecting pipeline, so that the water inlet pipe, the heat exchanger, the water outlet pipe and the connecting pipeline can form a closed-loop heat dissipation loop;
And controlling the water flow driving part to start so as to drive residual water in the heat dissipation loop to circularly flow in the heat dissipation loop, and performing heat dissipation and cooling on the heat exchanger.
In an alternative embodiment, after the water outlet pipeline is controlled to be communicated with the water draining pipeline and residual water in the internal pipeline of the water heater is drained, the following steps are further executed:
entering an anti-scaling mode;
controlling the first valve to act, and switching the water inlet pipeline to a first state that the first pipe section is communicated with the connecting pipeline and blocked with the second pipe section;
and controlling the second valve to act, and switching the water outlet pipeline to a second state that the fourth pipe section is communicated with the connecting pipeline and is blocked with the third pipe section.
In an alternative embodiment, the control method further includes:
receiving a signal from a user to start water consumption;
controlling the second valve to act, and switching the water outlet pipe from the second state to a third state in which the third pipe section is communicated with the water outlet pipeline;
controlling the first valve to act, and switching the water inlet pipe from a first state to a normal circulation state;
controlling the water inlet pipeline to normally feed water, and discharging air in the internal pipeline of the water heater through the water discharge pipeline;
and after the set exhaust time is reached, controlling the second valve to act, and switching the third state of the water outlet pipe to a normal circulation state.
In an alternative embodiment, the control method further comprises the steps of:
when judging that the water consumption stopping time of the user is greater than or equal to the set interval time and the user water consumption signal is not received in the set interval time, controlling the water heater to enter a residual water discharging mode.
In an alternative embodiment, the control method further comprises the steps of:
monitoring the water flow in the water inlet pipeline in real time;
when the water flow rate is judged to be lower than the set threshold value, the user can be inferred to stop water consumption; when the water flow rate is judged to be greater than or equal to the set threshold value, the user can be inferred to start water consumption.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a gas water heater according to an embodiment of the present invention;
FIG. 2 is a schematic flow chart of a first embodiment of a control method of a gas water heater according to an embodiment of the present invention;
FIG. 3 is a schematic flow chart of a second embodiment of a control method of a gas water heater according to an embodiment of the present invention;
FIG. 4 is a schematic flow chart of a third embodiment of a method for controlling a gas water heater according to an embodiment of the present invention;
FIG. 5 is a schematic flow chart of a fourth embodiment of a method for controlling a gas water heater according to an embodiment of the present invention;
fig. 6 is a schematic flow chart of a fifth implementation of a control method of a gas water heater according to an embodiment of the present invention.
Reference numerals illustrate:
10. a heat exchanger;
11. a water inlet pipeline; 111. A first pipe section; 112. A second pipe section;
12. a water outlet pipeline; 121. A third pipe section; 122. A fourth pipe section;
13. a heat exchange pipeline;
20. a connecting pipeline; 21. a first valve; 22. a second valve;
30. a water flow driving member;
40. a temperature detecting part;
50. a flow rate detection unit;
60. a gas inlet pipeline; 61. a safety valve; 62. a proportional valve; 63. a segment valve; 64. discharging fire;
70. a blower.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Water heaters are widely used in daily life to rapidly supply hot water. Water heaters typically include air-powered water heaters, electric water heaters, and gas-fired water heaters. The gas water heater comprises different energy materials such as combustion liquefied gas, natural gas and the like. The water outlet temperature of the water heater is generally monitored in real time through a temperature sensor and is fed back to the controller, and the controller adjusts the output of the load according to the current water temperature so as to adjust the water temperature to the set target temperature.
Because the temperature sensor and the internal pipeline of the water heater are metal components, the water heater can absorb mineral substances which are mainly calcium ions and magnesium ions in the water quality after being immersed in the water quality with excessive mineral substances for a long time, the temperature sensor and the water inlet and outlet pipeline can be scaled up over time, the measurement precision of the temperature sensor can be influenced by scale, the feedback temperature has deviation, the temperature detection and temperature control precision of the water heater are reduced, the problem that the outlet water temperature of the water heater is inconsistent with the target set temperature is solved, and the water consumption comfort of a user is reduced. And the pipeline inside the water heater can also lead to the water flow caliber to reduce because of the scale deposit, causes the water flow to block up easily and influences the performance, and the flow of water flow can also reduce thereupon, influences user experience.
Embodiments of the present invention are described below with reference to fig. 1 to 6.
According to an embodiment of the present invention, in one aspect, the present invention provides a gas water heater, which includes a heat exchanger 10, a water inlet pipeline 11, a water outlet pipeline 12, and a surplus water discharging device.
Specifically, as shown in fig. 1, an inlet pipe 11 and an outlet pipe 12 are respectively connected to the heat exchanger 10; the residual water discharging device comprises a connecting pipeline 20 arranged between the water inlet pipeline 11 and the water outlet pipeline 12, a water discharging pipeline communicated with the water outlet pipeline 12, and valves respectively arranged on the water inlet pipeline 11 and the water outlet pipeline 12; wherein, the connecting pipeline 20 is made of nonmetallic heat-resistant materials, and the valve is suitable for switching and controlling the normal circulation of the water inlet pipeline 11 and the water outlet pipeline 12, or controlling the connection of the connecting pipeline 20 and the water inlet pipeline 11 and/or the water outlet pipeline 12, or controlling the connection of the water outlet pipeline and the water outlet pipeline 12.
In the above embodiment, through the residual water discharging device, after the water heater is used, the water discharging pipeline is controlled to be communicated with the water outlet pipeline 12, so that the water stored in the water heater pipeline is timely discharged, the residence time of the water in the pipeline is reduced, and the phenomenon that scale or rust pipeline is formed by long-term soaking of metal components such as the pipeline in accumulated water is avoided.
In addition, in this embodiment, through the connecting pipeline 20 that sets up between inlet tube 11 and outlet pipe 12, because connecting pipeline 20 adopts non-metal heat-resistant material to make, compare in inlet tube 11, it is difficult to scale deposit or by corrosion, when discharging ponding in the water heater pipeline, switch to the state that inlet end is linked together with connecting pipeline 20 and inlet tube 11 is cut off through valve control inlet tube 11, thereby can effectually avoid rivers to gush into in inlet tube 11 under the hydraulic pressure effect, cause the problem that surplus water in the pipeline is difficult to drain, and after the user finishes using the water heater, can also control connecting pipeline 20 and inlet tube 11, outlet pipe 12 and heat exchange pipeline 13 in the heat exchanger 10 form the radiating circuit of closed loop, supplementary heat exchanger 10 carries out quick heat dissipation, reduce the temperature rise of heat exchanger 10, make heat exchanger 10 can quick cooling down, avoid the user to appear the problem that the water temperature is too high when using once more in the short time.
Alternatively, the connecting pipe 20 may be made of plastic, rubber or ceramic, and the specific material of the connecting pipe 20 is not limited in this embodiment, so long as the connecting pipe is made of a non-metal material and has high temperature resistance.
In some embodiments, the valves include a first valve 21 and a second valve 22, specifically, the first valve 21 is disposed on the water inlet pipe 11, one end of the connecting pipe 20 is connected to the first valve 21, the connecting pipe 20 is connected to the water inlet pipe 11 through the first valve 21, and the water inlet pipe 11 is divided into a first pipe section 111 and a second pipe section 112 by the first valve 21; the second valve 22 is disposed on the water outlet pipeline 12, the other end of the connecting pipeline 20 and the water draining pipeline are both connected to the second valve 22, the other end of the connecting pipeline 20 and the water draining pipeline are both connected to the water outlet pipeline 12 through the second valve 22, and the water outlet pipeline 12 is divided into a third pipe section 121 and a fourth pipe section 122 by the second valve 22.
Further, the first valve 21 is adapted to switch between controlling the normal flow of the water inlet pipe 11, or controlling the connection pipe 20 to be connected with the first pipe section 111, or controlling the connection pipe 20 to be connected with the second pipe section 112; the second valve 22 is adapted to switch between controlling the normal flow of the water outlet pipe 12, controlling the communication between the connecting pipe 20 and the third pipe section 121, controlling the communication between the connecting pipe 20 and the fourth pipe section 122, or controlling the communication between the water outlet pipe 12 and the water draining pipe.
In the above embodiment, the valves switch the on state of each pipeline by adopting the first valve 21 and the second valve 22, so that the water heater can switch between the normal water use, the residual water drainage, the auxiliary heat dissipation of the heat exchanger 10 and other functions, and the structure is simple and reliable, and the implementation is easy.
In an alternative embodiment, the first valve 21 and the second valve 22 are manual valves or solenoid valves. When the first valve 21 and the second valve 22 are manual valves, a user can control the first valve 21 and the second valve 22 to be opened and closed in a manual mode so as to realize the switching of the water heater between various functions of normal water use, residual water drainage, auxiliary heat dissipation of the heat exchanger and the like. When the first valve 21 and the second valve 22 are electromagnetic valves, the first valve 21 and the second valve 22 can be automatically controlled in an electric mode in cooperation with a controller of the hot air heater, so that the water heater can be switched between various functions of normal water use, residual water drainage, auxiliary heat dissipation of the heat exchanger and the like.
Preferably, in this embodiment, the first valve 21 and the second valve 22 are electromagnetic valves, and the switching between the first valve 21 and the second valve 22 in multiple states is automatically controlled by electric mode, so that the degree of automation and intelligence is higher.
In some preferred embodiments, the first valve 21 is a three-way valve, the first valve 21 having three ports, one of which is adapted to be connected to one end of the connecting line 20 and the other two of which are connected to the first pipe section 111 and the second pipe section 112, respectively. The second valve 22 is a four-way valve, and the second valve 22 has four ports, wherein one port is suitable for being connected with the other end of the connecting pipeline 20, and the other three ports are respectively connected with the third pipe section 121, the fourth pipe section 122 and the drainage pipeline.
In the above embodiment, the first valve 21 is a three-way valve, the second valve 22 is a four-way valve, and the two valves can be used to switch the water heater between multiple modes, so that the structure is simple and the assembly is convenient.
It should be noted that, the first valve 21 and the second valve 22 in this embodiment are not limited to the structure of adopting the three-way valve and the four-way valve, and may be any combination of a switch valve, a two-way valve, a one-way valve, and the like, and the types and the number of the valves adopted by the first valve 21 and the second valve 22 are not limited in this embodiment, so long as the operation switching of the water heater between the modes can be realized.
In some embodiments, the first tube segment 111 communicates with the water inlet end of the water inlet line 11, the second tube segment 112 communicates with the heat exchanger 10, the third tube segment 121 communicates with the heat exchanger 10, and the fourth tube segment 122 communicates with the water outlet end of the water outlet line 12.
Further, the three ports of the first valve 21 are E, F, G ports, wherein the port E is connected to one end of the second pipe section 112, the other end of the second pipe section 112 is connected to the water inlet end of the heat exchanger 10, the port F is connected to one end of the first pipe section 111, the other end of the first pipe section 111 is connected to a faucet, and the port G is connected to one end of the connecting pipe 20. The four valve ports of the second valve 22 are A, B, C, D valve ports respectively, wherein the valve port A is connected with one end of the third pipe section 121, the other end of the third pipe section 121 is connected with the water outlet end of the heat exchanger 10, the valve port B is connected with the first end of the fourth pipe section 122, the other end of the fourth pipe section 122 is connected with water outlet structures such as a shower head, the valve port C is connected with the other end of a connecting pipeline, and the valve port D is connected with a drainage pipeline.
In this embodiment, the gas water heater includes a usage mode and a residual water discharging mode, wherein: when the gas water heater is in a use mode, the heat exchanger is in a working state, the water inlet pipeline 11 and the water outlet pipeline 12 are in a circulation state, and external water enters from the water inlet pipeline 11 and flows out from the water outlet pipeline 12 after being heated by the heat exchanger 10. When the gas water heater is in the residual water discharging mode, the heat exchanger 10 is in a closed state, the water inlet pipeline 11 is in a state that the first pipe section 111 is communicated with the connecting pipeline 20, the first pipe section 111 is blocked from the second pipe section 112, the water outlet pipeline 12 is in a state that the third pipe section 121 is communicated with the water discharging pipeline, the third pipe section 121 is blocked from the fourth pipe section 122, and residual water in the second pipe section 112, the heat exchanger 10 and the third pipe section 121 can be discharged through the water discharging pipeline.
In the above embodiment, when the user uses the water heater, the water inlet pipeline 11, the water outlet pipeline 12 and the heat exchanger 10 are controlled to be in a circulating state by the first valve 21 and the second valve 22, tap water enters from the water inlet end of the water inlet pipeline 11, flows through the heat exchanger 10 for heating, and is discharged from the water outlet pipeline 12 for the user to use. After the user uses the water heater, the first valve 21 controls the water inlet pipeline 11 to be switched to a state that the first pipe section 111 is communicated with the connecting pipeline 20 and the first pipe section 111 and the second pipe section 112 are blocked, so that the problem that tap water can flow into the second pipe section 112, the third pipe section 121 and the heat exchanger 10 under the action of water pressure when the user does not use the water heater can be effectively avoided, and the problem that the water is difficult to drain when residual water is discharged can be also avoided because the second pipe section 112 and the third pipe section 121 are closer to the heat exchanger 10 than the first pipe section 111 and the second pipe section 112, the water temperature is higher, and minerals such as calcium ions and magnesium ions in water are easier to be adsorbed to form scale.
In some embodiments, the gas water heater further comprises an auxiliary heat rejection mode when the gas water heater is in the auxiliary heat rejection mode: the connecting pipeline 20 is respectively communicated with the second pipe section 112 and the third pipe section 121, so that the second pipe section 112, the heat exchange pipeline 13 in the heat exchanger 10, the third pipe section 121 and the connecting pipeline 20 form a closed-loop heat dissipation circuit; the gas water heater further comprises a water flow driving member 30 arranged on the heat dissipation loop, wherein the water flow driving member 30 is suitable for driving residual water in the heat dissipation loop to circularly flow in the heat dissipation loop after the gas water heater is turned off so as to perform heat dissipation and cooling on the heat exchanger 10.
Because the temperature around the heat exchanger 10 is still high after the water heater is shut down, and the residual temperature of the heat exchanger 10 is still high, in this embodiment, after the user uses the water heater, the first valve 21 and the second valve 22 control the connecting pipeline 20 to be respectively connected with the second pipe segment 112 and the third pipe segment 121, so that the second pipe segment 112, the heat exchanger 10, the third pipe segment 121 and the connecting pipeline 20 form a closed loop heat dissipation loop, then residual water in the heat dissipation loop flows in a circulating manner in the heat dissipation loop through the water flow driving piece 30, and the residual water absorbs heat and evaporates near the heat exchanger 10, so that the heat exchanger 10 and air around the heat exchanger 10 are cooled, the temperature rise of the heat exchanger 10 is reduced, the heat is taken away by the water flow circulation to assist the heat exchanger 10 to cool the heat dissipation, the excessive high temperature of the heat exchanger 10 is avoided, and when the user uses water again in a short time, the water outlet temperature can be high, and the user is scalded or the user experience is affected.
In some embodiments, the water flow driver 30 includes a water pump disposed on the second pipe section 112 of the water inlet line 11.
In the above embodiment, by providing the water flow driving member 30 on the second pipe section 112 of the water intake pipe 11, the water flow driving member 30 is enabled to drive not only the water flow circulating in the heat radiation circuit in the auxiliary heat radiation mode but also the second pipe section 112 and the third pipe section 121 and the residual water in the heat exchanger 10 to be discharged into the water discharge pipe in the water discharge mode.
In some embodiments, the gas water heater further comprises an anti-scaling mode, when the gas water heater is in the anti-scaling mode, the first pipe section 111, the connecting pipeline 20 and the fourth pipe section 122 are in a state of being communicated with each other, and the second pipe section 112 and the third pipe section 121 are in a state of being blocked from external water inlet.
In the above embodiment, when the user does not use the water heater, the first pipe section 111, the connecting pipeline 20 and the fourth pipe section 122 are controlled to be in a mutually conducting state by the first valve 21 and the second valve 22, and the second pipe section 112 and the third pipe section 121 are in a state of being blocked from the external water inlet, so that when the user does not use the water heater, tap water cannot flow into the second pipe section 112, the third pipe section 121 and the heat exchanger 10 under the action of water pressure, and as the second pipe section 112 and the third pipe section 121 are closer to the heat exchanger 10 than the first pipe section 111 and the second pipe section 112, the temperature of water in the second pipe section 112 and the third pipe section 121 is relatively higher, mineral substances such as calcium ions and magnesium ions in the water are more easily adsorbed to form scale, and the problem that the second pipe section 112 and the third pipe section 121 are easy to scale is avoided.
In some embodiments, the gas water heater further comprises a temperature sensing component 40 disposed on the third pipe section 121 of the water outlet line 12. The temperature detecting part 40 monitors the water outlet temperature of the water heater in real time, and feeds back the water outlet temperature to the controller of the water heater, and the controller adjusts the output of the load according to the current water temperature so as to adjust the water temperature to the set target temperature.
Because the temperature detecting member 40 is disposed on the third pipe section 121, the problem that the temperature detecting member 40 is easily scaled in the residual water of the pipeline after being immersed in the water for a long period can be effectively avoided by blocking the second pipe section 112 and the third pipe section 121 from the external water inlet when the water heater is not used.
Alternatively, the temperature detecting member 40 is a temperature sensor.
In some embodiments, the gas water heater further comprises a flow detection member 50 disposed on the first pipe section 111 of the water inlet line 11. The flow rate of water flowing through the water inlet pipeline 11 can be detected through the flow rate detection part 50, so that the time node for monitoring the water use start or stop of the user can be conveniently judged.
Alternatively, the flow detection member 50 is a water flow sensor.
The structure of the water heater in this embodiment will be described with reference to fig. 1.
In this embodiment, the end of the water inlet pipeline 11 near the port F is a water inlet end connected to a tap, and the end of the water outlet pipeline 12 near the port B is a water outlet end connected to a shower head. Normally, the water flow detecting part 50 detects that water flows, and the water flow detecting part indicates that a user uses water in a boiling water tap, and the water heater starts to enter into a working state. Water enters from the water inlet end of the water inlet pipeline 11, flows through the upper heat exchanger 10 and is heated to the water outlet end of the water outlet pipeline 12 and flows out. The temperature detecting part 40 monitors the outlet water temperature of the water heater in real time and feeds back and adjusts the water temperature in time. In this embodiment, the pipes from the E valve port to the a valve port are copper pipes, and the temperature detecting member 40 is a metal device, so that calcium and magnesium ions in water are easily adsorbed to form scale. The connecting line 20 between port C and port G is a nonmetallic heat-resistant pipe. The temperature detecting member 40 is disposed at an end of the third pipe section 121 of the water outlet pipe 12 near the valve port a.
Further, the gas water heater comprises a shell, a heat exchanger 10 arranged in the shell, and a fire row 64 positioned below the heat exchanger 10, wherein the fire row 64 burns air, the air rises to heat a heat exchange pipeline 13 in the heat exchanger 10, optionally, the heat exchange pipeline 13 is a coiled pipe, and two ends of the heat exchange pipeline 13 are respectively connected with a water inlet pipeline 11 and a water outlet pipeline 12. The water heater further comprises a gas inlet pipeline 60 and a safety valve 61 arranged at the outlet end of the gas inlet pipeline 60, the safety valve 61 is suitable for opening the outlet end of the gas inlet pipeline 60 or closing the outlet end of the gas inlet pipeline 60, the water heater further comprises a proportional valve 62 connected with the safety valve 61 through a pipeline, and the proportional valve 62 is used for adjusting the fire intensity of the fire row 64. The water heater further comprises a plurality of sectional valves 63, fire rows 64 are also multiple, the plurality of fire rows 64 are arranged in one-to-one correspondence with the plurality of sectional valves 63, and the sectional valves 63 are suitable for controlling which fire rows 64 catch fire. The water heater further comprises a fan 70, the fan 70 is arranged above the heat exchanger 10, the fan 70 is used for accelerating air circulation in the combustion chamber, continuously supplementing fresh air into the combustion chamber, and simultaneously discharging waste gas in the combustion chamber.
Since the smoke temperature around the heat exchanger 10 is still high after the water heater is shut down and extinguished, the fan 70 can continuously rotate to discharge the smoke, and the residual water discharging device controls the water flow to circulate to take away heat to assist in heat dissipation. The water in the water inlet pipeline 11, the water outlet pipeline 12 and the heat exchange pipeline 13 is timely discharged through the residual water discharging device, so that the problems that the water quality in the water heater is too hard, the water accumulated in the water heater is scaled, the caliber of the pipeline is reduced, the water flow is influenced, and the temperature detecting component 40 is easy to scale to influence the detection precision can be effectively avoided.
According to an embodiment of the present invention, in another aspect, there is provided a control method of a gas water heater, which is applicable to the gas water heater of any one of the above embodiments, and is shown in fig. 1 and 2, the control method includes the following steps:
step S101, starting a residual water discharging mode;
step S102, controlling the water inlet end of the water inlet pipeline 11 to be communicated with the connecting pipeline 20 and blocked with the water outlet pipeline 12;
and step 103, controlling the water outlet pipeline 12 to be communicated with the water discharge pipeline, and discharging residual water in the internal pipeline of the water heater.
In the above embodiment, when the user stops using water, the water inlet pipeline 11 is controlled by the valve to switch from the normal circulation state to the state that the water inlet end is blocked from the water outlet pipeline 12 and is connected to the connecting pipeline 20, so that external water inlet cannot enter the water inlet pipeline 11, the heat exchanger 10 and the water outlet pipeline 12 in the process of draining residual water, and the problem of incomplete draining of residual water in the pipeline is caused.
In the step S101, the starting of the water draining mode includes that the user starts the water draining mode manually, or the controller of the water heater automatically controls the water heater to start the water draining mode after receiving a signal of stopping water consumption by the user.
In some embodiments, as shown in fig. 1 and 3, after the water inlet end of the water inlet pipeline 11 is controlled to be communicated with the connecting pipeline 20 and is blocked from the water outlet pipeline 12, the following steps are further performed before the water outlet pipeline 12 is controlled to be communicated with the water discharge pipeline:
Step S201, starting an auxiliary heat dissipation mode;
step S202, controlling the second valve 22 to act, and switching the water outlet pipeline 12 from a normal circulation state to a state of being communicated with the connecting pipeline 20, so that the water inlet pipeline 11, the heat exchanger 10, the water outlet pipeline 12 and the connecting pipeline 20 can form a closed-loop heat dissipation loop;
in step S203, the water flow driving member 30 is controlled to start to drive the residual water in the heat dissipation circuit to circulate in the heat dissipation circuit, so as to cool the heat exchanger 10.
In the above embodiment, before the user stops using water and starts draining residual water, the water flow driving member 30 drives residual water in the heat dissipation loop to circulate in the heat dissipation loop, and the residual water absorbs waste heat and evaporates when approaching the heat exchanger 10, so as to cool the heat exchanger 10 and air around the heat exchanger 10, reduce the temperature rise of the heat exchanger 10, and utilize the water flow circulation to take away heat to assist the heat exchanger 10 to dissipate heat and cool, so as to avoid the problem that the heat exchanger 10 is too high in temperature, and when the user uses water again in a short time, the water outlet temperature is higher, scalds or affects the user experience.
Optionally, the operation time of the auxiliary heat dissipation mode is 15S-25S. Preferably, the operation time of the auxiliary heat dissipation mode is 20S.
In some embodiments, as shown in connection with fig. 1 and 4, after the water outlet pipeline 12 is controlled to be communicated with the water discharge pipeline, the residual water in the internal pipeline of the water heater is discharged, the following steps are further performed:
step 301, entering an anti-scaling mode;
step S302, controlling the first valve 21 to act, and switching the water inlet pipeline 11 to a first state in which the first pipe section 111 is communicated with the connecting pipeline 20 and is blocked from the second pipe section 112;
in step S303, the second valve 22 is controlled to operate, and the water outlet pipeline 12 is switched to a second state in which the fourth pipe section 122 is connected to the connecting pipeline 20 and is blocked from the third pipe section 121.
In the above embodiment, when the user does not use the water heater after draining the residual water, the water inlet end of the water inlet pipeline 11 and the water outlet end of the water outlet pipeline 12 are controlled to be communicated with the connecting pipeline 20 and to be in a blocking state with the second pipe section 112, the third pipe section 121 and the heat exchanger 10, and since the second pipe section 112 and the third pipe section 121 are closer to the heat exchanger 10 than the first pipe section 111 and the second pipe section 112, the temperature of the water in the water pipe is relatively higher, and minerals such as calcium ions and magnesium ions in the water are more easily adsorbed to form scale, so that the problem that the second pipe section 112 and the third pipe section 121 are easy to scale is avoided. In addition, the problem that the temperature detecting member 40 provided on the third pipe section 121 is easily scaled by being immersed in the residual water of the pipe for a long period of time can be effectively avoided.
In some embodiments, as shown in connection with fig. 1 and 5, the control method further includes:
step S401, receiving a signal of starting water consumption by a user;
step S402, controlling the second valve 22 to act, and switching the water outlet pipeline 12 from the second state to a third state in which the third pipe section 121 is communicated with the water discharge pipeline;
step S403, controlling the first valve 21 to act, and switching the water inlet pipeline 11 from the first state to the normal circulation state;
step S404, controlling the water inlet pipeline 11 to normally feed water, and discharging air in the internal pipeline of the water heater through the water discharge pipeline;
in step S405, after the set exhaust time is reached, the second valve 22 is controlled to operate, and the water outlet pipeline 12 is switched from the third state to the normal circulation state.
In the above embodiment, when a user starts to use the water heater, the third pipe section 121 of the water outlet pipeline 12 is connected with the water discharge pipeline, and then the water inlet pipeline 11 is controlled to normally feed water, so that air stored in the water heater pipeline can be extruded, and after the air is discharged, the water outlet pipeline 12 is controlled to recover to a normal circulation state, so that the problems that air is stored in the pipeline of the water heater, the water outlet is intermittent, the water flow is not smooth, and the user experience is affected can be effectively avoided.
Optionally, in step S404, the water flow driving member 30 is controlled to be activated, so as to drive the water flow to discharge the air in the pipeline. Of course, in other embodiments, the air in the pipeline can be driven out by the pressure of the water flow itself, namely the water pressure.
In some embodiments, the control method further comprises the steps of:
when judging that the water consumption stopping time of the user is greater than or equal to the set interval time T and the user water consumption signal is not received in the set interval time T, controlling the water heater to enter a residual water discharging mode.
In the above embodiment, when the time for stopping the user is longer than the set interval time and the user water signal is not received all the time, the water heater is controlled to enter the residual water discharging mode, so that the problem of resource waste caused by misjudgment that the user does not use the water heater and directly enters the residual water discharging mode when the user switches on and off the water heater for a plurality of times during use is avoided.
In some preferred embodiments, the control method further comprises the steps of:
and acquiring the using habit data information of the user, and determining the set interval time T based on the using habit data information of the user.
In the above embodiment, the relevant parameter information of the drainage mode may be determined according to the life usage habit of the user, the usage habit of the user is learned by networking in the early stage, the data is transmitted to the cloud for learning, and the drainage operation is performed according to the habit of the user. For example, the usage habit of the user is obtained and is frequently shut down in the using process, and the time of the shut down is generally more than 10 seconds, and then the control setting interval time is more than 10 seconds.
In some embodiments, as shown in connection with fig. 1 and 6, the control method further comprises the steps of:
s501, monitoring the flow of water in the water inlet pipeline 11 in real time;
s502, when judging that the water flow rate is lower than a set threshold value, deducing that the user stops using water;
s503, when the water flow rate is judged to be greater than or equal to the set threshold value, the user can be inferred to start water consumption.
In the above embodiment, the flow rate of the water flowing through the water inlet pipe 11 is detected in real time by the flow rate detecting part 50 provided on the first pipe section 111 of the water inlet pipe 11, and whether the user starts or stops using the water is judged by the magnitude of the detected flow rate, so that the judging manner is simple and reliable.
The working principle of the water heater is described below with reference to the accompanying drawings.
In this embodiment, the water flow direction of the first valve 21 is FE and the water flow direction of the second valve 22 is AB when the user uses the device normally. When the user boiled water, the water flow in the water pipe can generate a water flow signal, and when the flow detection part 50 detects that the water flow is too low, the water flow is stopped by the user, and the water flow is not expected to fluctuate after 10 minutes.
The second valve 22 is controlled to be switched from the AB flow direction to the AC flow direction, the first valve 21 is changed from the FE flow direction to the EG flow direction, the water flow driving piece 30 operates, and the water flow circulates for a set time T1 to assist in heat dissipation. Alternatively, T1 is 20s.
After the water stop time reaches the set interval time T2 (where T2 is greater than T1) and no water signal is received during this time, the second valve 22 changes the AC flow direction to the AD flow direction, and the remaining water is discharged.
After the set drain time T3 is reached, the second valve 22 is switched from the AD flow direction to the CB flow direction, and the first valve 21 is switched from the EG flow direction to the FG flow direction. Alternatively, T3 is 30s.
When the water flow signal is detected again, the first valve 21 is switched from the flow direction FG to the FE, the second valve 22 is switched from the CB to the AD, the exhaust time T4 is continuously set, and after the air in the pipeline is exhausted, the second valve 22 is switched from the AD to the AB to restore to the normal circulation state. Alternatively, the exhaust time T4 is set to 2s.
Although embodiments of the present invention have been described in connection with the accompanying drawings, various modifications and variations may be made by those skilled in the art without departing from the spirit and scope of the invention, and such modifications and variations fall within the scope of the invention as defined by the appended claims.
Claims (15)
1. A gas water heater, comprising:
a heat exchanger (10);
a water inlet pipeline (11) and a water outlet pipeline (12) are respectively connected with the heat exchanger (10);
the residual water discharge device comprises a connecting pipeline (20) arranged between the water inlet pipeline (11) and the water outlet pipeline (12), a water discharge pipeline communicated with the water outlet pipeline (12) and valves respectively arranged on the water inlet pipeline (11) and the water outlet pipeline (12);
The connecting pipeline (20) is made of a nonmetallic heat-resistant material, and the valve is suitable for switching and controlling the normal circulation of the water inlet pipeline (11) and the water outlet pipeline (12), or controlling the conduction of the connecting pipeline (20) and the water inlet pipeline (11) and/or the water outlet pipeline (12), or controlling the conduction of the water drainage pipeline and the water outlet pipeline (12).
2. The gas water heater as recited in claim 1, wherein the valve comprises:
the first valve (21) is arranged on the water inlet pipeline (11), one end of the connecting pipeline (20) is connected to the first valve (21), and the water inlet pipeline (11) is divided into a first pipe section (111) and a second pipe section (112) by the first valve (21);
the second valve (22) is arranged on the water outlet pipeline (12), the other end of the connecting pipeline (20) and the water draining pipeline are connected to the second valve (22), and the water outlet pipeline (12) is divided into a third pipe section (121) and a fourth pipe section (122) by the second valve (22);
wherein the first valve (21) is adapted to switch and control the normal circulation of the water inlet pipeline (11), or control the connection pipeline (20) to be communicated with the first pipe section (111), or control the connection pipeline (20) to be communicated with the second pipe section (112);
The second valve (22) is suitable for switching and controlling the normal circulation of the water outlet pipeline (12), or controlling the conduction of the connecting pipeline (20) and the third pipeline section (121), or controlling the conduction of the connecting pipeline (20) and the fourth pipeline section (122), or controlling the conduction of the water outlet pipeline (12) and the drainage pipeline.
3. Gas water heater according to claim 2, characterized in that the first valve (21) and the second valve (22) are manual valves or solenoid valves.
4. A gas water heater according to claim 2, wherein the first valve (21) is a three-way valve, the first valve (21) having three ports, one of which is adapted to be connected to one end of the connecting pipe (20) and the other two of which are connected to the first pipe section (111) and the second pipe section (112), respectively;
the second valve (22) is a four-way valve, the second valve (22) is provided with four valve ports, one valve port is suitable for being connected with the other end of the connecting pipeline (20), and the other three valve ports are respectively connected with a third pipe section (121), a fourth pipe section (122) and a drainage pipeline.
5. A gas water heater according to claim 2, wherein the first pipe section (111) is in communication with the water inlet end of the water inlet pipe (11), the second pipe section (112) is in communication with the heat exchanger (10), the third pipe section (121) is in communication with the heat exchanger (10), and the fourth pipe section (122) is in communication with the water outlet end of the water outlet pipe (12);
The gas water heater comprises a use mode and a residual water discharging mode, wherein:
when the gas water heater is in a use mode, the heat exchanger (10) is in a working state, the water inlet pipeline (11) and the water outlet pipeline (12) are in a circulation state, and external water enters from the water inlet pipeline (11) and flows out from the water outlet pipeline (12) after being heated by the heat exchanger (10);
when the gas water heater is in a residual water discharging mode, the heat exchanger (10) is in a closed state, the water inlet pipeline (11) is in a state that a first pipe section (111) is communicated with the connecting pipeline (20) and the first pipe section (111) is blocked from a second pipe section (112), the water outlet pipeline (12) is in a state that a third pipe section (121) is communicated with the water discharging pipeline and the third pipe section (121) is blocked from a fourth pipe section (122), and residual water in the second pipe section (112), the heat exchanger (10) and the third pipe section (121) can be discharged through the water discharging pipeline.
6. The gas water heater according to claim 4, further comprising an auxiliary heat radiation mode, wherein when the gas water heater is in the auxiliary heat radiation mode, the connecting pipe (20) is in communication with the second pipe section (112) and the third pipe section (121), respectively, such that the second pipe section (112), the heat exchanger (10), the third pipe section (121) and the connecting pipe (20) form a closed loop heat radiation circuit;
The gas water heater further comprises a water flow driving piece (30) arranged on the heat dissipation loop, and the water flow driving piece (30) is suitable for driving residual water in the heat dissipation loop to circularly flow in the heat dissipation loop after the gas water heater is closed so as to conduct heat dissipation and cooling on the heat exchanger (10).
7. A gas water heater according to claim 6, wherein the water flow drive (30) comprises a water pump arranged on the second pipe section (112) of the water inlet pipe (11).
8. A gas water heater according to any one of claims 5 to 7, further comprising an anti-scaling mode, wherein the first pipe section (111), the connecting pipe (20), the fourth pipe section (122) are in a mutually conductive state, and the second pipe section (112) and the third pipe section (121) are in a blocking state from external water intake when the gas water heater is in the anti-scaling mode.
9. A gas water heater according to any one of claims 5 to 7, further comprising a temperature detection member (40) provided on a third pipe section (121) of the water outlet pipe (12);
and/or the gas water heater further comprises a flow detection component (50) arranged on the first pipe section (111) of the water inlet pipeline (11).
10. A control method for a gas water heater, suitable for use in a gas water heater as claimed in any one of claims 1 to 9, the control method comprising:
starting a residual water discharging mode;
the water inlet end of the water inlet pipeline (11) is controlled to be communicated with the connecting pipeline (20) and blocked with the water outlet pipeline (12);
and controlling the water outlet pipeline (12) to be communicated with the water draining pipeline, and draining residual water in the internal pipeline of the water heater.
11. The control method of a gas water heater according to claim 10, characterized in that after controlling the water inlet end of the water inlet pipe (11) to be connected to the connecting pipe (20) and to be disconnected from the water outlet pipe (12), the following steps are further performed before controlling the water outlet pipe (12) to be connected to the water discharge pipe:
starting an auxiliary heat dissipation mode;
controlling a second valve (22) to act, and switching the water outlet pipeline (12) from a normal circulation state to a state of being communicated with the connecting pipeline (20), so that the water inlet pipeline (11), the heat exchanger (10), the water outlet pipeline (12) and the connecting pipeline (20) can form a closed-loop heat dissipation loop;
and controlling a water flow driving piece (30) to start so as to drive residual water in the heat dissipation loop to circularly flow in the heat dissipation loop and cool the heat exchanger (10).
12. A control method of a gas water heater according to claim 10, characterized in that after controlling the water outlet pipe (12) to be in communication with the water discharge pipe, the residual water in the internal pipe of the water heater is discharged, the following steps are also performed:
entering an anti-scaling mode;
controlling the first valve (21) to act, and switching the water inlet pipeline (11) to a first state that the first pipe section (111) is communicated with the connecting pipeline (20) and is blocked from the second pipe section (112);
and controlling the second valve (22) to act, and switching the water outlet pipeline (12) to a second state that the fourth pipeline section (122) is communicated with the connecting pipeline (20) and blocked from the third pipeline section (121).
13. The control method of a gas water heater according to claim 12, further comprising:
receiving a signal from a user to start water consumption;
controlling a second valve (22) to act, and switching the water outlet pipeline (12) from a second state to a third state in which a third pipe section (121) is communicated with the water discharge pipeline;
controlling the first valve (21) to act, and switching the water inlet pipeline (11) from a first state to a normal circulation state;
controlling a water inlet pipeline (11) to normally feed water, and discharging air in an internal pipeline of the water heater through the water discharge pipeline;
After the set exhaust time is reached, the second valve (22) is controlled to act, and the water outlet pipeline (12) is switched from the third state to the normal circulation state.
14. A control method of a gas water heater according to any one of claims 10 to 13, further comprising the steps of:
when judging that the water consumption stopping time of the user is greater than or equal to the set interval time and the user water consumption signal is not received in the set interval time, controlling the water heater to enter a residual water discharging mode.
15. A control method of a gas water heater according to any one of claims 10 to 13, further comprising the steps of:
monitoring the flow of water in the water inlet pipeline (11) in real time;
when the water flow rate is judged to be lower than a set threshold value, the user can be inferred to stop using water;
when the water flow rate is judged to be greater than or equal to the set threshold value, the user can be inferred to start water consumption.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311092422.1A CN117029278A (en) | 2023-08-28 | 2023-08-28 | Gas water heater and control method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311092422.1A CN117029278A (en) | 2023-08-28 | 2023-08-28 | Gas water heater and control method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN117029278A true CN117029278A (en) | 2023-11-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202311092422.1A Pending CN117029278A (en) | 2023-08-28 | 2023-08-28 | Gas water heater and control method thereof |
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| Country | Link |
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| CN (1) | CN117029278A (en) |
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2023
- 2023-08-28 CN CN202311092422.1A patent/CN117029278A/en active Pending
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