CN110686410A - Intelligent water mixing system of gas water heater and control method thereof - Google Patents
Intelligent water mixing system of gas water heater and control method thereof Download PDFInfo
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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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Abstract
The invention discloses an intelligent water mixing system of a gas water heater and a control method thereof, which comprises a shell, a burner, a heat exchange pipe, a water inlet pipe, a water outlet pipe, an electric three-way valve, a water flow sensor, a water inlet temperature sensor, a water outlet temperature sensor and a control center, wherein the electric three-way valve is arranged at the end part of the water inlet pipe, then the water is divided out of the first shunt pipe to the heat exchanger and is divided out of the second shunt pipe to the water outlet pipe, when the water outlet temperature sensor detects that the water outlet temperature changes, the control center can adjust the proportion of the electric three-way valve to change the water temperature to reach the preset temperature, thereby being capable of intelligently and dynamically adjusting the water temperature without manual operation, being very rapid in water temperature adjustment, being free from sudden cold and sudden heat caused by sudden large and small water flow, even if the water flow changes rapidly, the water temperature can be adjusted to be balanced by rapidly adjusting the opening size of the electric three-way valve.
Description
Technical Field
The invention relates to the field of gas water heaters, in particular to an intelligent water mixing system of a gas water heater and a control method thereof.
Background
With the increasing life of people, the experience requirements of people on using a gas water heater are more exquisite, the gas water heater on the market is constant-temperature, but the water temperature is still suddenly cold and suddenly hot in actual use, and the water outlet temperature is too high when the gas water heater is suddenly stopped and restarted in the use process (namely, the temperature of water in the water heater heated by residual temperature is higher after water is cut off). Most producers use for this reason increases the water admixing device water mixing valve at the water port and adjusts the temperature, needs the manual regulation of user, does not have the intellectuality, uses to experience the comfort level not good, has the producer to adopt the water heater of carrying out linkage feedback with combustor power and play water temperature for this reason, but this kind of mode, because add hot water demand time, the temperature variation of consequently water is slower, uses to experience still not good, especially when rivers change very fast, can't control the temperature at all and is balanced.
Disclosure of Invention
In order to solve the technical problems, the invention aims to provide an intelligent water mixing system of a gas water heater and a control method thereof.
The technical scheme adopted by the invention for solving the problems is as follows: an intelligent water mixing system of a gas water heater, comprising:
a housing;
the combustor is arranged in the shell, and an air inlet joint communicated with the combustor is arranged on the shell;
the heat exchanger is arranged on the combustor;
the water inlet pipe is arranged on the shell;
the water outlet pipe is communicated with the outlet end of the heat exchanger, and the end part of the water outlet pipe is arranged on the shell;
the port a of the electric three-way valve is arranged at the tail end of the water inlet pipe, the port b of the electric three-way valve is connected with a first shunt pipe, the first shunt pipe is communicated with the inlet end of the heat exchanger, the port c of the electric three-way valve is connected with a second shunt pipe, and the second shunt pipe is communicated with the water outlet pipe;
the water flow sensor is arranged in the water inlet pipe;
the water inlet temperature sensor is arranged in the first shunt pipe or the water inlet pipe;
the water outlet temperature sensor is arranged in the water outlet pipe;
and the control center is electrically connected with the combustor, the electric three-way valve, the water flow sensor, the water inlet temperature sensor and the water outlet temperature sensor.
As a further improvement of the above technical solution, the inlet water temperature sensor is disposed in the first branch pipe.
As a further improvement of the technical scheme, the water outlet temperature sensor is arranged at the end part of the water outlet pipe.
As a further improvement of the technical scheme, a safety valve is arranged at the end part of the water outlet pipe.
A control method of an intelligent water mixing system of a gas water heater comprises the following steps:
s1, starting a water heater, and enabling the water heater to enter a standby state;
s2, setting a preset water temperature by a user;
s3, when detecting that a user has a use demand, detecting the flow frequency and the inlet and outlet water temperature of the inflow water by using a water flow detector, an inlet water temperature detector and an outlet water temperature detector, and feeding back the flow frequency and the inlet and outlet water temperature to a control center;
s4, the control center calculates whether the load range of the combustor can meet the requirement of preset water temperature or not according to the water flow and the preset temperature, if yes, the control center enters S5, and if not, the control center enters S8;
s5, adjusting the electric three-way valve to a preset state, enabling part of water flow to flow into the heat exchanger to be heated, enabling part of water flow to flow into the water outlet pipe along the second shunt pipe, adjusting the load of the burner to meet the requirement of preset water temperature, and entering S6;
s6, detecting the outlet water temperature by the outlet water temperature sensor and feeding the outlet water temperature back to the control center, comparing the real-time water temperature with the preset temperature by the control center, and entering S7 if the water temperature changes relative to the preset temperature;
s7, feeding back water flow to a control center by a water flow detector, and adjusting the flow dividing proportion of an electric three-way valve and the load of a burner by the control center according to data to enter a water temperature adjusting step;
s8, judging whether the maximum load or the minimum load of the combustor can not meet the requirement, if so, entering S9, and if not, entering S10;
s9, adjusting the load of the burner to the maximum, and enabling all water flow to flow into the heat exchanger when the electric three-way valve does not work;
s10, adjusting the load of the burner to be minimum, starting an electric three-way valve to adjust the water temperature to a preset water temperature by adjusting a cold water and hot water example, controlling the water temperature by adjusting the electric three-way valve when the water outlet temperature changes, if the electric three-way valve is opened to be maximum or cannot reach the preset temperature, adjusting the load of the burner to be minimum, and opening the electric three-way valve to be maximum.
As a further improvement of the above technical solution, the water temperature adjusting step comprises:
s7.1, controlling the center to compare whether the temperature of the effluent is reduced or increased, wherein the step S7.2 is performed when the temperature is increased, and the step S7.3 is performed when the temperature is reduced;
s7.2, the control center drives the electric three-way valve to be opened greatly, so that water flow flowing into the heat exchanger is reduced, and water flow flowing into the water outlet pipe is increased, so that the water temperature can reach the preset temperature quickly;
and S7.3, the control center drives the electric three-way valve to be opened and closed to increase water flow flowing into the heat exchanger and reduce water flow flowing into the water outlet pipe so as to quickly enable the water temperature to reach the preset temperature.
As a further improvement of the above technical solution, the method further comprises step S7.4: after the step S7.2 is completed, the control center controls the load of the burner to decrease, and simultaneously drives the electric three-way valve to gradually decrease to the preset state, and if the load of the burner is adjusted to the minimum, the current state of the electric three-way valve still cannot be decreased to the preset state, the operation goes to step S10.
As a further improvement of the above technical solution, the method further comprises step S7.5: after the step S7.3 is completed, the control center controls the load of the burner to increase, and simultaneously drives the electric three-way valve to gradually increase to a preset state, if the load of the burner is adjusted to the maximum, the current state of the electric three-way valve still cannot be increased to the preset state, the load of the burner is kept to the maximum, and the electric three-way valve is kept to the current state.
As a further improvement of the above technical solution, the preset state of the electric three-way valve is a half-open state.
The invention has the beneficial effects that: through being provided with electric three-way valve at the inlet tube tip, then shunt out on first shunt to heat exchanger, shunt out on second shunt to the outlet pipe, detect the leaving water temperature and change the back when leaving water temperature sensor, the control hub can make the temperature change reach preset temperature through the proportion of adjusting electric three-way valve, thereby can intelligent dynamic regulation temperature, do not need artificially to control, the temperature is adjusted very rapidly, can not lead to the temperature to neglect cold suddenly hot because rivers are neglected suddenly little, even rivers change very fast, also can come even adjust the temperature balance through the quick size of opening of adjusting electric three-way valve.
Drawings
The invention is further explained below with reference to the drawing description and the detailed description.
Fig. 1 is a schematic structural diagram of a preferred embodiment of an intelligent water mixing system of a gas water heater in the invention;
fig. 2 is a schematic flow chart illustrating steps of a control method of an intelligent water mixing system of a gas water heater according to the present invention.
Detailed Description
Reference will now be made in detail to the present preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to like elements throughout.
In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, the meaning of a plurality of means is one or more, the meaning of a plurality of means is two or more, and larger, smaller, larger, etc. are understood as excluding the number, and larger, smaller, inner, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.
Referring to fig. 1 to 2, an intelligent water mixing system of a gas water heater includes:
a housing 10;
the burner 20 is arranged in the shell 10, and an air inlet joint communicated with the burner 20 is arranged on the shell 10;
a heat exchanger 30, the heat exchanger 30 being provided on the burner 20;
the water inlet pipe 40, the said water inlet pipe 40 is set up on body 10;
the water outlet pipe 80 is communicated with the outlet end of the heat exchanger 30, and the end part of the water outlet pipe 80 is arranged on the shell 10;
the port a of the electric three-way valve 50 is arranged at the tail end of the water inlet pipe 40, the port b of the electric three-way valve 50 is connected with a first shunt pipe 60, the first shunt pipe 60 is communicated with the inlet end of the heat exchanger 30, the port c of the electric three-way valve 50 is connected with a second shunt pipe 70, and the second shunt pipe 70 is communicated with the water outlet pipe 80;
a water flow sensor disposed within the water inlet pipe 40;
the inlet water temperature sensor 92, the inlet water temperature sensor 92 is arranged in the first shunt pipe 60 or the inlet pipe 40;
the water outlet temperature sensor 91, the water outlet temperature sensor 91 is arranged in the water outlet pipe 80;
the control hub 90 is electrically connected to the burner 20, the electric three-way valve 50, the water flow sensor, the inlet water temperature sensor 92 and the outlet water temperature sensor 91, and the control hub 90 can control the electric three-way valve 50 to operate to open the second shunt pipe 70, so as to adjust the ratio of water flowing into the first shunt pipe 60 and the second shunt pipe 70.
When the water temperature control device is used, the electric three-way valve 50 is arranged at the end part of the water inlet pipe 40, then the water flows out of the first shunt pipe 60 to the heat exchanger 30, and then flows out of the second shunt pipe 70 to the water outlet pipe 80, under the normal condition, the electric three-way valve 50 is positioned at a preset position, after the water temperature sensor 91 detects that the water temperature changes, the control center 90 can firstly change the water temperature to reach the preset temperature by adjusting the proportion of the electric three-way valve 50, preferably, the load of the burner 20 is slowly adjusted after the control center 90, meanwhile, the electric three-way valve 50 is adjusted to dynamically balance the water temperature, the electric three-way valve 50 is restored to the preset position to deal with the next water temperature change, the water temperature can be intelligently and dynamically adjusted through the scheme, manual operation is not needed, the water temperature adjustment is very rapid compared with the prior art, even if the water flow changes rapidly, the water temperature can be adjusted to be balanced by rapidly adjusting the opening size of the electric three-way valve 50.
With further improvement, it is preferable that the inlet water temperature sensor 92 is disposed in the first shunt pipe 60.
In order to detect the outlet water temperature more accurately, the outlet water temperature is preferably set at the end of the outlet pipe 80, so that the hot water in the outlet pipe 80 and the cold water flowing in the second shunt pipe 70 are mixed for a longer length.
Further, in order to ensure safety, it is preferable that a safety valve is further provided at the end of the water outlet pipe 80.
The invention also discloses a control method of the intelligent water mixing system, which is shown in figure 2. The control method of the intelligent water mixing system of the gas water heater comprises the following steps:
s1, starting a water heater, and enabling the water heater to enter a standby state;
s2, setting a preset water temperature by a user;
s3, when detecting that a user has a use demand, detecting the flow frequency and the inlet and outlet water temperature of the inflow water by the water flow detector, the inlet water temperature detector and the outlet water temperature detector and feeding back the inflow water and the inlet and outlet water to the control center 90;
s4, the control center 90 calculates whether the load range of the combustor 20 can meet the requirement of the preset water temperature according to the water flow and the preset temperature, if so, the control center enters S5, and if not, the control center enters S8;
s5, adjusting the electric three-way valve 50 to a preset state, enabling part of water flow to flow into the heat exchanger 30 to be heated, enabling part of water flow to flow into the water outlet pipe 80 along the second shunt pipe 70, adjusting the load of the combustor 20 to meet the requirement of preset water temperature, and entering S6;
s6, the outlet water temperature sensor 91 detects the outlet water temperature and feeds the outlet water temperature back to the control center 90, the control center 90 compares the real-time water temperature with the preset temperature, and if the water temperature changes relative to the preset temperature, the operation goes to S7;
s7, the water flow detector feeds back water flow to the control center 90, and the control center 90 adjusts the split ratio of the electric three-way valve 50 and the load of the combustor 20 according to data to enter a water temperature adjusting step;
s8, judging whether the maximum load or the minimum load of the combustor 20 can not meet the requirement, if so, entering S9, and if not, entering S10;
s9, adjusting the load of the burner 20 to be maximum, and enabling all water flow to flow into the heat exchanger 30 when the electric three-way valve 50 does not work;
s10, adjusting the load of the burner 20 to be minimum, starting the electric three-way valve 50 to adjust the water temperature to a preset water temperature by adjusting a cold water and hot water example, controlling the water temperature by adjusting the electric three-way valve 50 when the water outlet temperature changes, and if the electric three-way valve 50 is opened to be maximum or cannot reach the preset temperature, adjusting the load of the burner 20 to be minimum, and opening the electric three-way valve 50 to be maximum.
The water temperature adjusting step preferably includes:
the water temperature adjusting step is as follows:
s7.1, comparing the temperature of the effluent with that of the control center 90, wherein the control center enters S7.2 when the temperature of the effluent is increased, and enters S7.3 when the temperature of the effluent is decreased;
s7.2, the control center 90 drives the electric three-way valve 50 to be opened greatly, so that water flow flowing into the heat exchanger 30 is reduced, and water flow flowing into the water outlet pipe 80 is increased, so that the water temperature can reach the preset temperature quickly;
s7.3, the control center 90 drives the electric three-way valve 50 to be opened to be small, so that the water flow flowing into the heat exchanger 30 is increased, and the water flow flowing into the water outlet pipe 80 is reduced, so that the water temperature can reach the preset temperature quickly.
Further, in order to better cope with the next water temperature change, the method preferably further comprises a step S7.4, wherein the step S7.4 is: after the step S7.2 is completed, the control center 90 controls the load of the burner 20 to decrease, and simultaneously drives the electric three-way valve 50 to gradually decrease to the preset state, if the load of the burner 20 is adjusted to be minimum, the current state of the electric three-way valve 50 still cannot be increased to the preset state, which indicates that the minimum load of the burner 20 cannot meet the preset water temperature, and then the process directly proceeds to S10.
Similarly, step S7.5 is also included. The step S7.5 is as follows: after the step S7.3 is completed, the control center 90 controls the load of the burner 20 to increase, and simultaneously drives the electric three-way valve 50 to gradually increase to a preset state, if the load of the burner 20 is adjusted to be maximum, the current state of the electric three-way valve 50 still cannot be increased to the preset state, the load of the burner 20 is kept to be maximum, and the electric three-way valve 50 is kept to be in the current state.
In the above-mentioned solution, the preset state of the electric three-way valve 50 may be established according to specific situations, and preferably, the preset state of the electric three-way valve 50 is a half-open state.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which can be directly or indirectly applied to other related technical fields without departing from the spirit of the present invention, are intended to be included in the scope of the present invention.
Claims (9)
1. The utility model provides a gas heater's intelligence mixes water system which characterized in that includes:
a housing (10);
the burner (20), the said burner (20) is set up in the body (10), there is air inlet joint communicated with burner (20) on the said body (10);
a heat exchanger (30), the heat exchanger (30) being disposed on the burner (20);
the water inlet pipe (40), the said water inlet pipe (40) is set up on the body (10);
the water outlet pipe (80), the said water outlet pipe (80) communicates with outlet end of the heat exchanger (30), the end of the said water outlet pipe (80) is set up on body (10);
the port a of the electric three-way valve (50) is arranged at the tail end of the water inlet pipe (40), the port b of the electric three-way valve (50) is connected with a first shunt pipe (60), the first shunt pipe (60) is communicated with the inlet end of the heat exchanger (30), the port c of the electric three-way valve (50) is connected with a second shunt pipe (70), and the second shunt pipe (70) is communicated with the water outlet pipe (80);
the water flow sensor is arranged in the water inlet pipe (40);
the inlet water temperature sensor (92), the inlet water temperature sensor (92) is arranged in the first shunt pipe (60) or the inlet pipe (40);
the water outlet temperature sensor (91), the water outlet temperature sensor (91) is arranged in the water outlet pipe (80);
the control center (90), the control center (90) is electrically connected with the burner (20), the electric three-way valve (50), the water flow sensor, the water inlet temperature sensor (92) and the water outlet temperature sensor (91).
2. The intelligent water mixing system of the gas water heater as claimed in claim 1, wherein:
the inlet water temperature sensor (92) is arranged in the first shunt pipe (60).
3. The intelligent water mixing system of the gas water heater as claimed in claim 1, wherein:
the outlet water temperature sensor (91) is arranged at the end part of the outlet pipe (80).
4. The intelligent water mixing system of the gas water heater as claimed in claim 1, wherein:
the end part of the water outlet pipe (80) is provided with a safety valve.
5. The control method of the intelligent water mixing system of the gas water heater according to any one of the claims 1 to 4, characterized by comprising the following steps:
s1, starting a water heater, and enabling the water heater to enter a standby state;
s2, setting a preset water temperature by a user;
s3, when detecting that a user has a use demand, detecting the flow frequency and the inlet and outlet water temperature of the inflow water by using a water flow detector, an inlet water temperature detector and an outlet water temperature detector, and feeding back the flow frequency and the inlet and outlet water temperature to a control center (90);
s4, the control center (90) calculates whether the load range of the combustor (20) can meet the preset water temperature requirement according to the water flow and the preset temperature, if so, the control center enters S5, and if not, the control center enters S8;
s5, adjusting the electric three-way valve (50) to a preset state, enabling part of water flow to flow into the heat exchanger (30) to be heated, enabling part of water flow to flow into the water outlet pipe (80) along the second shunt pipe (70), adjusting the load of the combustor (20) to meet the requirement of preset water temperature, and entering S6;
s6, detecting the outlet water temperature by the outlet water temperature sensor (91) and feeding back the outlet water temperature to the control center (90), comparing the real-time water temperature with the preset temperature by the control center (90), and entering S7 if the water temperature changes relative to the preset temperature;
s7, the water flow detector feeds back water flow to the control center (90), and the control center (90) adjusts the flow dividing proportion of the electric three-way valve (50) and the load of the burner (20) according to data and enters a water temperature adjusting step;
s8, judging whether the maximum load or the minimum load of the combustor (20) can not meet the requirement, if so, entering S9, and if not, entering S10;
s9, adjusting the load of the burner (20) to the maximum, and enabling all water flow to flow into the heat exchanger (30) when the electric three-way valve (50) does not work;
s10, adjusting the load of the burner (20) to the minimum, starting the electric three-way valve (50) to adjust the water temperature to a preset water temperature by adjusting a cold water and hot water example, controlling the water temperature by adjusting the electric three-way valve (50) when the water outlet temperature changes, if the electric three-way valve (50) is opened to the maximum or cannot reach the preset temperature, adjusting the load of the burner (20) to the minimum, and opening the electric three-way valve (50) to the maximum.
6. The control method of the intelligent water mixing system of the gas water heater as claimed in claim 5, wherein:
the water temperature adjusting step is as follows:
s7.1, comparing the temperature of the outlet water by the control center (90) with that of the outlet water, if the temperature is increased, entering S7.2, and if the temperature is decreased, entering S7.3;
s7.2, the control center (90) drives the electric three-way valve (50) to be opened greatly, so that water flow flowing into the heat exchanger (30) is reduced, and water flow flowing into the water outlet pipe (80) is increased, so that the water temperature can reach the preset temperature quickly;
s7.3, the control center (90) drives the electric three-way valve (50) to be opened to be small, so that water flow flowing into the heat exchanger (30) is increased, and water flow flowing into the water outlet pipe (80) is reduced, so that the water temperature can reach the preset temperature quickly.
7. The control method of the intelligent water mixing system of the gas water heater as claimed in claim 6, wherein:
and S7.4, after the step S7.2 is finished, the control center (90) controls the load of the burner (20) to be reduced, meanwhile, the electric three-way valve (50) is driven to be gradually reduced to a preset state, and if the load of the burner (20) is adjusted to be minimum, the current state of the electric three-way valve (50) cannot be reduced to the preset state, the step S10 is carried out.
8. The control method of the intelligent water mixing system of the gas water heater as claimed in claim 6, wherein:
s7.5, after the step S7.3 is finished, the control center (90) controls the load of the burner (20) to be increased, meanwhile, the electric three-way valve (50) is driven to gradually increase to a preset state, if the load of the burner (20) is adjusted to be maximum, the current state of the electric three-way valve (50) cannot be increased to the preset state, the load of the burner (20) is kept to be maximum, and the electric three-way valve (50) is kept to be in the current state.
9. The method for controlling the intelligent water mixing system of the gas water heater as claimed in claim 5, 6, 7 or 8, wherein:
the preset state of the electric three-way valve (50) is a half-open state.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111412649A (en) * | 2020-04-30 | 2020-07-14 | 广东万和新电气股份有限公司 | Gas water heater capable of heating and working method thereof |
| CN111947322A (en) * | 2020-09-21 | 2020-11-17 | 广东万家乐燃气具有限公司 | Water mixing device and gas water heater |
| CN112178946A (en) * | 2020-10-22 | 2021-01-05 | 广东万家乐燃气具有限公司 | Control method of composite energy hot water system and composite energy hot water system |
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