CN115597228A - Gas water heater and heating control method and device - Google Patents
Gas water heater and heating control method and device Download PDFInfo
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- CN115597228A CN115597228A CN202211287211.9A CN202211287211A CN115597228A CN 115597228 A CN115597228 A CN 115597228A CN 202211287211 A CN202211287211 A CN 202211287211A CN 115597228 A CN115597228 A CN 115597228A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
- F24H1/10—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium
- F24H1/107—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium using fluid fuel
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H15/00—Control of fluid heaters
- F24H15/20—Control of fluid heaters characterised by control inputs
- F24H15/212—Temperature of the water
- F24H15/215—Temperature of the water before heating
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H15/00—Control of fluid heaters
- F24H15/20—Control of fluid heaters characterised by control inputs
- F24H15/212—Temperature of the water
- F24H15/219—Temperature of the water after heating
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H15/00—Control of fluid heaters
- F24H15/20—Control of fluid heaters characterised by control inputs
- F24H15/238—Flow rate
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H15/00—Control of fluid heaters
- F24H15/30—Control of fluid heaters characterised by control outputs; characterised by the components to be controlled
- F24H15/355—Control of heat-generating means in heaters
- F24H15/36—Control of heat-generating means in heaters of burners
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H15/00—Control of fluid heaters
- F24H15/40—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
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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
- F24H9/18—Arrangement or mounting of grates or heating means
- F24H9/1809—Arrangement or mounting of grates or heating means for water heaters
- F24H9/1832—Arrangement or mounting of combustion heating means, e.g. grates or burners
- F24H9/1836—Arrangement or mounting of combustion heating means, e.g. grates or burners using fluid fuel
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- 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)
- Heat-Pump Type And Storage Water Heaters (AREA)
Abstract
The invention provides a gas water heater, a heating control method and a device thereof, wherein the gas water heater comprises: a heat exchanger provided with a first heating system; the heatable water storage tank is connected with the water outlet of the heat exchanger and is provided with a second heating system; a first temperature sensor adapted to detect a temperature of inlet water of the heat exchanger; the controller is in communication connection with the first heating system, the second heating system and the first temperature sensor respectively, so that the controller calculates the power required to be output by the gas water heater to meet the following requirements: q = (Ts-T1). Times.CxF, and the first heating system and/or the second heating system are/is started according to the power required to be output by the gas water heater. Through setting up heatable water storage tank for gas heater's minimum power is adjustable littleer, thereby can enlarge gas heater's output range, can solve gas heater and go out the too high problem of temperature under specific condition.
Description
Technical Field
The invention relates to the technical field of gas water heaters, in particular to a gas water heater, and a heating control method and device of the gas water heater.
Background
The gas water heater becomes an indispensable household electrical appliance in life, and the gas water heater usually adopts a high-temperature smoke pipe generated by burning gas to heat water in a heat exchanger, so that the temperature rise of the water is realized.
At present, the minimum power of a gas water heater which is heated by burning gas to generate heat energy is also more than 1.8kW, so that the water outlet temperature is too high under a specific condition, and a user cannot use the gas water heater.
Disclosure of Invention
Therefore, the technical problem to be solved by the invention is to overcome the technical defect that the gas water heater in the prior art has high minimum power and leads the outlet water temperature to be too high to be used, thereby providing the gas water heater capable of expanding the output power range.
In order to solve the above technical problem, the present invention provides a gas water heater, including: a heat exchanger provided with a first heating system; the heatable water storage tank is connected with the water outlet of the heat exchanger and is provided with a second heating system; a first temperature sensor adapted to detect a temperature of inlet water of the heat exchanger; the controller is in communication connection with the first heating system, the second heating system and the first temperature sensor respectively, so that the controller calculates the power required to be output by the gas water heater to meet the following requirements: q = (Ts-T1). Times.CxF, wherein Ts represents the target water temperature of the gas water heater, T1 represents the inlet water temperature of the heat exchanger detected by the first temperature sensor, C represents the specific heat capacity of water, F represents the water flow rate of the water inlet of the heat exchanger, Q represents the power required to be output by the gas water heater, and the first heating system and/or the second heating system are/is started according to the power required to be output by the gas water heater.
Optionally, the heatable water storage tank is provided with a water storage cavity, and the second heating system comprises: the electromagnetic heating coil is arranged around the cavity wall of the water storage cavity; wherein the electromagnetic heating coil is electrically connected with the controller.
Optionally, the second heating system further comprises: and plastic packaging, wherein a sealing cavity is arranged to coat the electromagnetic heating coil.
Optionally, the heatable water storage tank further comprises: the foaming layer encloses an annular cavity and the water storage cavity, and the annular cavity surrounds the water storage cavity; wherein the second heating system is disposed in the annular cavity.
Optionally, the gas water heater further comprises: the second temperature sensor is suitable for detecting the water temperature of the water outlet of the heat exchanger and sending a second water temperature signal; the third temperature sensor is suitable for detecting the water temperature of the water outlet of the heatable water storage tank and sending a third water temperature signal; the controller is in communication connection with the second temperature sensor and the third temperature sensor respectively, the controller is suitable for acquiring the second water temperature signal sent by the second temperature sensor and the third water temperature signal sent by the third temperature sensor, when F is larger than or equal to F1 and Ts is larger than or equal to T + a, the controller starts the first heating system and controls the heating power of the first heating system to be adjusted between Qrmin and Qrmax according to Q = (Ts-T1). Times.CxF, and when Q is larger than or equal to Qrmin, the controller is suitable for acquiring the second water temperature signal sent by the second temperature sensor and the third water temperature signal sent by the third temperature sensor, and when T is larger than or equal to F1 and Ts is larger than or equal to T + a: t2= Ts, if F is larger than or equal to F1 and Ts is larger than or equal to T + a, the controller starts the second heating system according to Q = (Ts-T1). Times.CxF, and when Qrmin is larger than Q and larger than or equal to Qemin, the controller controls the heating power of the second heating system to be adjusted between Qemin and Qemax until T3 meets the following conditions: ts = T3; otherwise, the first heating system and the second heating system are not started; wherein Qr represents the heating power of the first heating system, qe represents the heating power of the second heating system, qrmax represents the maximum heating power of the first heating system, qrmin represents the minimum heating power of the first heating system, qemax represents the maximum heating power of the second heating system, qemin represents the minimum heating power of the second heating system, T2 represents the water temperature at the water outlet of the heat exchanger, T3 represents the water temperature at the water outlet of the heatable water storage tank, a represents the water temperature adjusting value, and F1 represents the preset starting water flow rate of the water heater.
And after the first heating system is started, and when Ts is more than or equal to T3+ a, controlling the heating power of the first heating system to be adjusted between Qrmin and Qrmax until T2 meets the following conditions: t2= Ts, and the heating power of the second heating system is controlled to be adjusted between Qemin and Qemax until T3 satisfies: ts = T3+ a; or when Ts is less than T3+ a, only starting the first heating system for heating; or when only the second heating system is started to heat, controlling the heating power of the second heating system to be adjusted between Qemin and Qemax until T3 meets the following conditions: ts = T3; qrmax denotes a maximum heating power of the first heating system, qemax denotes a maximum heating power of the second heating system, qemin denotes a minimum heating power of the second heating system, T2 denotes a water temperature at the water outlet of the heat exchanger, T3 denotes a water temperature at the water outlet of the heatable water storage tank, and a denotes a water temperature adjustment value.
Therefore, the technical problem to be solved by the present invention is to overcome the technical defect in the prior art that the minimum heating power of the gas water heater is too high, so that the outlet water temperature is too high to be used, and thereby provide a heating control method of a gas water heater capable of expanding the output power range.
In order to solve the above technical problem, the present invention provides a heating control method for a gas water heater, comprising: acquiring the water inlet temperature of a heat exchanger, the water flow of a water inlet of the heat exchanger and the target water temperature of a gas water heater; calculating the power required to be output by the gas water heater according to the inlet water temperature, the water flow and the target water temperature, wherein the power required to be output by the gas water heater meets the following requirements: q = (Ts-T1) xC x F, wherein Ts represents the target water temperature of the gas water heater, T1 represents the inlet water temperature of the heat exchanger, C represents the specific heat capacity of water, F represents the water flow of the water inlet of the heat exchanger, and Q represents the power required to be output by the gas water heater; and starting the first heating system and/or the second heating system according to the power required to be output by the gas water heater.
Optionally, starting the first heating system and/or the second heating system according to the power required to be output by the gas water heater, specifically including: acquiring the minimum heating power of a first heating system and the minimum heating power of a second heating system; when the power required to be output by the gas water heater is greater than or equal to the minimum heating power of the first heating system, starting the first heating system to heat; or when the power required to be output by the gas water heater is smaller than the minimum heating power of the first heating system, the second heating system is started to heat.
Optionally, the obtaining of the power required to be output by the gas water heater specifically includes: acquiring the water inlet temperature of a heat exchanger and the target water temperature of a combustor; acquiring water flow of a water inlet of a heat exchanger; acquiring the power required to be output by the gas water heater according to the water inlet temperature of the heat exchanger, the target water temperature and the water flow of a water inlet of the heat exchanger; wherein, the power that the gas heater needs to be exported satisfies: q = (Ts-T1) × C × F; ts represents a target water temperature of the burner, T1 represents an inlet water temperature of the heat exchanger, C represents a specific heat capacity of water, and F represents a water flow rate of a water inlet of the heat exchanger.
Optionally, when the power required to be output by the gas water heater is greater than or equal to the minimum heating power of the first heating system, the first heating system is started to heat, specifically including: acquiring the water temperature of a water outlet of the heat exchanger; acquiring the water temperature of a water outlet of a heatable water storage tank; according to the water temperature of the water outlet of the heat exchanger and the water temperature of the water outlet of the heatable water storage tank, when Ts is more than or equal to T3+ a, controlling the heating power of the first heating system to be adjusted between Qrmin and Qrmax until T2 meets the following conditions: t2= Ts and controls the heating power of the second heating system to be adjusted between Qemin and Qemax until T3 satisfies: ts = T3+ a; or when Ts is less than T3+ a, only starting the first heating system for heating; wherein Qrmax denotes a maximum heating power of the first heating system, and Qrmin denotes a minimum heating power of the first heating system; qemax denotes a maximum heating power of the second heating system, qemin denotes a minimum heating power of the second heating system, T2 denotes a water temperature at the water outlet of the heat exchanger, T3 denotes a water temperature at the water outlet of the heatable water storage tank, and a denotes a first water temperature adjustment value.
Optionally, when the power that the gas water heater needs to output is less than the minimum heating power of the first heating system, the second heating system is started to heat, which specifically includes: when Q < Qrmin, controlling the heating power of the second heating system to be adjusted between Qemin and Qemax when the second heating system is started to heat until T3 meets the following conditions: ts = T3.
Optionally, the heating control method of the gas water heater further includes: and when the target water temperature of the combustor is more than or equal to the sum of the inlet water temperature of the heat exchanger and the second water temperature regulating value, and the water flow of the water inlet of the heat exchanger is more than the set water flow, starting to obtain the power required to be output by the gas water heater.
Therefore, the technical problem to be solved by the present invention is to overcome the technical defect that the gas water heater in the prior art has high minimum heating power, so that the outlet water temperature is too high to be used, thereby providing a heating control device of a gas water heater capable of expanding the output power range.
In order to solve the above technical problem, the present invention provides a heating control device for a gas water heater, comprising: the acquisition module is suitable for acquiring the water inlet temperature of the heat exchanger, the water flow of a water inlet of the heat exchanger and the target water temperature of the gas water heater; the calculation module is in communication connection with the acquisition module, and calculates the power required to be output by the gas water heater according to the inlet water temperature, the water flow and the target water temperature: q = (Ts-T1) xC x F, wherein Ts represents the target water temperature of the gas water heater, T1 represents the inlet water temperature of the heat exchanger, C represents the specific heat capacity of water, F represents the water flow of the water inlet of the heat exchanger, and Q represents the power required to be output by the gas water heater; the control module is in communication connection with the computing module, so that the control module starts the first heating system and/or the second heating system according to the power which is required to be output by the gas water heater and is computed by the computing module
Optionally, the obtaining module further obtains a minimum heating power of the first heating system and a minimum heating power of the second heating system, and the heating control device of the gas water heater further includes: the judging module is in communication connection with the acquiring module so as to judge the size between the power required to be output by the gas water heater and the minimum heating power of the first heating system and the minimum heating power of the second heating system; the control module is in communication connection with the judging module, so that the control module is suitable for starting the first heating system to heat when the power required to be output by the gas water heater is greater than or equal to the minimum heating power of the first heating system; or when the output power of the gas water heater is less than the minimum heating power of the first heating system, the second heating system is started to heat.
The technical scheme of the invention has the following advantages:
1. according to the gas water heater provided by the invention, the heatable water storage tank is arranged, the minimum power of the constant-temperature water storage tank can reach 120W, so that the minimum power of the gas water heater is reduced to 120W, the output power range of the gas water heater can be expanded, and the problem of overhigh water outlet temperature of the gas water heater under a specific condition can be solved.
2. The gas water heater provided by the invention adopts an electromagnetic heating mode of the electromagnetic heating coil, and water and electricity are separated, so that the risk of electric leakage can be completely eradicated.
3. The gas water heater provided by the invention can solve the problem of overlarge fluctuation of the outlet water temperature when the gas water heater is started again after being shut down for a short time through the heatable water storage tank, and can improve the user experience.
4. According to the heating control method of the gas water heater, the target temperature of the heater is compared with the outlet water temperature of the water storage tank which can be heated, and then the first heating system or the second heating system is selected to be controlled, so that the temperature set by a user can be reached more quickly;
5. the heating control device of the gas water heater provided by the invention is used for realizing the heating control method of the gas water heater in any one item, so that all beneficial effects of the heating control method of the gas water heater are achieved, and the detailed description is omitted.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic view of a water circuit structure of a gas water heater according to an embodiment of the present invention;
fig. 2 is a schematic cross-sectional structural view of a heatable water storage tank of a gas water heater according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of connection of a controller of a heatable water storage tank of a gas water heater according to an embodiment of the present invention;
FIG. 4 is a flow chart of a heating control method for a gas water heater according to an embodiment of the present invention;
FIG. 5 is a flow chart of a heating control method for a gas water heater according to another embodiment of the present invention;
FIG. 6 is a flow chart for obtaining the power required to be output by the gas water heater based on the heating control method of the gas water heater provided by the embodiment of FIG. 5;
fig. 7 is a specific flowchart of the heating control method for a gas water heater according to an embodiment of the present invention, when the power required to be output by the gas water heater is greater than or equal to the minimum heating power of the first heating system, the first heating system is started to heat;
FIG. 8 is a flow chart of a heating control method for a gas water heater according to another embodiment of the present invention;
fig. 9 is a block diagram illustrating a heating control device of a gas water heater according to an embodiment of the present invention.
FIG. 10 is a block diagram of a heating control device for a gas water heater according to another embodiment of the present invention;
fig. 11 is a block diagram illustrating an acquisition module of a heating control device of a gas water heater according to another embodiment of the present invention.
Description of reference numerals:
1-a heat exchanger; 2-a water storage tank can be heated; 3-a controller; 4-a first temperature sensor;
5-a water flow sensor; 6-a second temperature sensor; 7-a second temperature sensor;
8-a heating control device;
11-a first heating system;
201-a water storage cavity; 202-ring cavity;
21-a second heating system; 22-a foamed layer;
211-an electromagnetic heating coil; 212-plastic packaging;
81-an acquisition module; 82-a calculation module; 83-a control module; 84-a judgment module;
811-a first acquisition unit; 812-a second acquisition unit; 813-third acquisition unit.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
The existing gas water heater is started again after being temporarily shut down when in use, and the problem that the water outlet temperature of the water heater fluctuates greatly is solved, so that the user experience is greatly influenced.
Example 1
A gas water heater as shown in fig. 1 and 3, comprising: heat exchanger 1, heatable water storage tank 2, first temperature sensor 4 and controller 3, first temperature sensor 4 is suitable for detecting heat exchanger 1's temperature of intaking, heat exchanger 1 is equipped with first heating system 11, heatable water storage tank 2 is connected with heat exchanger 1's delivery port, heatable water storage tank is equipped with second heating system 21, controller 3 and first heating system 11, second heating system 21 and first temperature sensor 4 are the communication connection respectively for the power that gas heater needs to be exported is calculated to controller 3 and is satisfied: q = (Ts-T1) × C × F, where Ts represents a target water temperature of the gas water heater, T1 represents an inlet water temperature of the heat exchanger detected by the first temperature sensor 4, C represents a specific heat capacity of water, F represents a water flow rate of a water inlet of the heat exchanger, Q represents power required to be output by the gas water heater, and the first heating system 11 and/or the second heating system 21 are/is activated according to the power required to be output by the gas water heater.
The gas water heater further comprises: a water flow sensor 5, the water flow sensor 5 being adapted to detect the water flow at the water inlet of the heat exchanger 1 and to send a water flow signal to the controller 3. The first temperature sensor 4 detects the water inlet temperature of the heat exchanger 1 and sends a first water temperature signal to the controller 3, the controller 3 is in communication connection with the first temperature sensor 4 and the water flow sensor 5 respectively to obtain the first water temperature signal sent by the first temperature sensor 4 and the water flow signal sent by the water flow sensor 5, and the controller 3 calculates the power required to be output by the gas water heater according to the target water temperature, the water inlet temperature, the water flow and the water specific heat capacity.
Foretell heatable water storage tank 2 is the constant temperature water storage tank, and the flue gas that produces after the heating of first heating system 11 gets into and realizes the heat exchange in heat exchanger 1, and second heating system 21 is used for directly heating heatable water storage tank 2, and the minimum temperature can be set for to the temperature of heatable water storage tank 2 for gas heater's minimum power can be reduced to 120W, thereby can enlarge gas heater's output power scope, thereby solved gas heater and gone out the too high problem of temperature under specific condition.
Specifically, the first heating system 11 and/or the second heating system 21 may be started by comparing the power required to be output by the gas water heater with the maximum heating power of the first heating system, the minimum heating power of the first heating system, and the maximum heating power of the second heating system, and the minimum heating power of the second heating system, and since the water temperature of the heatable water storage tank 2 may set the minimum temperature, and the maximum value and the minimum value of the heating power of the second heating system 21 may be obtained, the output power range of the gas water heater may be expanded, and the problem that the outlet water temperature of the gas water heater is excessively high under a specific condition may be solved. The specific conditions here are for example in summer.
More specifically, when the power required to be output by the gas water heater is less than the minimum heating power of the first heating system and greater than the minimum heating power of the second heating system, the second heating system 21 is started and adjusted between the maximum heating power of the second heating system 21 and the minimum heating power of the second heating system 21, so that the power of the constant-temperature water storage tank can be 120 watts to the minimum heating power of the first heating system, and thus, the power range is expanded.
Further, as shown in fig. 2, the heatable water storage tank 2 is provided with a water storage cavity 201, and the second heating system 21 includes: and an electromagnetic heating coil 211 disposed around a wall of the water storage chamber 201, wherein the electromagnetic heating coil 211 is electrically connected to the controller 3.
Foretell heatable water storage tank 2 adopts electromagnetic heating mode of electromagnetic heating coil 211, and the water-electricity separation can stop the electric leakage risk completely.
Further, as shown, the second heating system 21 further includes: the plastic package 212 is provided with a sealing cavity to cover the electromagnetic heating coil 211, so that the safety can be further improved.
Further, as shown in fig. 2, the heatable water storage tank 2 further includes: the foaming layer 22 and the foaming layer 22 enclose the annular cavity 202 and the water storage cavity 201, the annular cavity 202 surrounds the water storage cavity 201, the second heating system 21 is arranged in the annular cavity 202, and the foaming layer 22 can further play a role in heat preservation, so that heat of the heatable water storage tank 2 is not easy to dissipate, and an energy-saving effect is achieved.
Further, as shown in fig. 2, the gas water heater further includes: a second temperature sensor 6 and a third temperature sensor 7, the second temperature sensor 6 is suitable for detecting the water temperature at the water outlet of the heat exchanger and sending a second water temperature signal, and the third temperature sensor 7 is suitable for detecting the water temperature at the water outlet of the heatable water storage tank and sending a third water temperature signal. The controller 3 is in communication connection with the second temperature sensor 6 and the third temperature sensor 7 respectively, the controller 3 is suitable for acquiring a second water temperature signal sent by the second temperature sensor 6 and a third water temperature signal sent by the third temperature sensor 7, when F is larger than or equal to F1 and Ts is larger than or equal to T + a, the controller 3 starts the first heating system 11 according to Q = (Ts-T1). Times.CxF, and when Q is larger than or equal to Qrmin, the controller 3 controls the heating power of the first heating system 11 to be adjusted between Qrmin and Qrmax until T2 meets: t2= Ts, if F is larger than or equal to F1 and Ts is larger than or equal to T + a, the controller 3 starts the second heating system 21 according to Q = (Ts-T1). Times.CxF, and when Qrmin is larger than Q and larger than or equal to Qemin, the controller 3 controls the heating power of the second heating system 21 to be adjusted between Qemin and Qemax until T3 meets the following conditions: ts = T3; otherwise, neither the first heating system 11 nor the second heating system 21 is started; wherein Qr represents the heating power of the first heating system, qe represents the heating power of the second heating system, qrmax represents the maximum heating power of the first heating system, qrmin represents the minimum heating power of the first heating system, qemax represents the maximum heating power of the second heating system, qemin represents the minimum heating power of the second heating system, T2 represents the water temperature at the water outlet of the heat exchanger, T3 represents the water temperature at the water outlet of the heatable water storage tank, a represents the water temperature adjusting value, and F1 represents the preset starting water flow rate of the water heater.
The value of a may be a range, where a may be 1. Similarly, the value of F1 may also be a range value, wherein F1 may take the value of 1L/min. The water flow rate detected by the water flow rate sensor 5 is F, the heating power of the first heating system is Qr, the minimum heating power is Qrmin, and the maximum heating power is Qrmax. The target temperature of the water heater is set to be Ts, the temperature collected by the first temperature sensor 4 is T1, the temperature collected by the second temperature sensor 6 is T2, the temperature collected by the third temperature sensor 7 is T3, the electric heating power Qe of the constant-temperature water storage tank is that the minimum power Qemin is about 120W, the maximum power Qemax is Qemax, and the Qemax is less than Qrmin.
The controller 3 can obtain Q and Qrmin, and start the first heating system 11 to heat when Q is larger than or equal to Qrmin, or start the second heating system 21 to heat when Q is smaller than Qrmin and Q is larger than or equal to Qemin.
Example 2
As shown in fig. 4, a heating control method of a gas water heater includes:
step S101: acquiring the water inlet temperature of the heat exchanger 1, the water flow of a water inlet of the heat exchanger 1 and the target water temperature of the gas water heater;
step S103: according to the inlet water temperature, the water flow and the target water temperature, calculating the power output by the gas water heater to meet the following requirements: q = (Ts-T1). Times.CxF, wherein Ts represents the target water temperature of the gas water heater, T1 represents the inlet water temperature of the heat exchanger, C represents the specific heat capacity of water, F represents the water flow of a water inlet of the heat exchanger, and Q represents the power required to be output by the gas water heater;
step S105: the first heating system 11 and/or the second heating system 21 are activated according to the power required to be output by the gas water heater.
When the second heating system 21 is introduced, the minimum power of the second heating system 21 can be 120W, so that the minimum power of the gas water heater is reduced to 120W, the output power range of the gas water heater can be expanded, and the problem that the outlet water temperature of the gas water heater is too high under a specific condition can be solved.
Further, as shown in fig. 5, starting the first heating system 11 and/or the second heating system 21 according to the power required to be output by the gas water heater specifically includes:
step S201: acquiring the minimum heating power of a first heating system and the minimum heating power of a second heating system;
step S203: when the power required to be output by the gas water heater is greater than or equal to the minimum heating power of the first heating system, starting the first heating system 11 for heating; or
Step S205: when the power required to be output by the gas water heater is less than the minimum heating power of the first heating system, the second heating system 21 is started to heat.
Further, as shown in fig. 6, obtaining the power required to be output by the gas water heater specifically includes:
step S301: acquiring the inlet water temperature of a heat exchanger and the target water temperature of a combustor;
step S303: acquiring water flow of a water inlet of a heat exchanger;
step S305: acquiring the power required to be output by the gas water heater according to the inlet water temperature of the heat exchanger, the target water temperature and the water flow of the water inlet of the heat exchanger;
wherein, the power that the gas heater needs output satisfies: q = (Ts-T1) × C × F; ts represents a target water temperature of the burner, T1 represents an inlet water temperature of the heat exchanger, C represents a specific heat capacity of water, and F represents a water flow rate of a water inlet of the heat exchanger.
Further, as shown in fig. 7 and 8, when the power required to be output by the gas water heater is greater than or equal to the minimum heating power of the first heating system, the starting of the first heating system 11 for heating specifically includes:
step S401: acquiring the water temperature of a water outlet of the heat exchanger;
step S403: acquiring the water temperature of a water outlet of a heatable water storage tank;
when F is larger than or equal to F1 and Ts is larger than or equal to T + a, according to Q = (Ts-T1). Times.CxF, when Q is larger than or equal to Qrmin, the first heating system 11 is started and the power of the first heating system 11 is controlled to be adjusted between Qrmin and Qrmax until T2 meets the following conditions: t2= Ts;
when T2 is less than Ts and (Ts-T2). Times.CxF is more than or equal to Qemin, the second heating system 21 is started to heat, and the power of the second heating system 21 is controlled to be adjusted between Qemin and Qemax until TS meets the following conditions: t3= Ts or (Ts-T2) × C × F < Qemin, the second heating system 21 is turned off.
Wherein Qrmax denotes a maximum heating power of the first heating system, and Qrmin denotes a minimum heating power of the first heating system; qemax denotes a maximum heating power of the second heating system, qemin denotes a minimum heating power of the second heating system, T2 denotes a water temperature at the water outlet of the heat exchanger, T3 denotes a water temperature at the water outlet of the heatable water storage tank, and a denotes a first water temperature adjustment value.
Furthermore, as shown in FIG. 8, if F ≧ F1 and Ts ≧ T + a, according to Q = (Ts-T1). Times.CxF, when Qrmin > Q ≧ Qemin, the second heating system 21 is started, and the heating power of the second heating system 21 is controlled to be adjusted between Qemin and Qemax until T3 satisfies: ts = T3;
otherwise, neither the first heating system 11 nor the second heating system 21 is activated.
Further, as shown in fig. 8, the heating control method of the gas water heater further includes:
and when Ts is more than or equal to T1+1 and F is more than or equal to F1, acquiring the power required to be output by the gas water heater.
And when the target water temperature of the combustor is more than or equal to the sum of the inlet water temperature of the heat exchanger and the second water temperature regulating value, and the water flow of the water inlet of the heat exchanger is more than the set water flow, acquiring the power required to be output by the gas water heater.
When the gas water heater is filled with water, the water flow sensor 5 can detect the water flow F, the controller 3 can make a judgment according to the water flow F and the target temperature Ts of the gas water heater, and if the Ts is more than or equal to T1+1 and the F is more than or equal to F1, the gas water heater enters a working state. Otherwise, the machine does not act, and dry burning can be avoided. Wherein 1 is the value of F1.
As shown in FIG. 8, when Ts ≧ T1+1 and F ≧ F1, the controller 3 further determines whether (Ts-T1). Times.CxF ≧ Qrmin, if yes, execution proceeds to step S501: starting the first heating system 11; otherwise, step S503 is executed: the second heating system 21 is activated. After step S501 is executed, it is further determined whether Ts ≧ T3+0.5, if yes, step S505 is executed: qr is adjusted between Qrmin and Qrmax with target Ts = T2; qe is adjusted between Qemin and Qemax, the target Ts = T3+0.5, and then whether Ts is more than or equal to T1+1 and F is more than or equal to F1 is judged; if not, step S501 is executed. After step S503 is executed, step S507 is executed: qe is adjusted between Qemin and Qemax with target Ts = T3, and then back to determine if (Ts-T1). Times.CxF ≧ Qrmin.
The Qe is the real-time electromagnetic heating power of the constant-temperature water storage tank, the Qemax is the maximum power of the real-time electromagnetic heating power of the constant-temperature water storage tank, the Qemax is less than Qrmin, the Qemin is the minimum power of the real-time electromagnetic heating power of the constant-temperature water storage tank, and the Qemin is about 40-20W. According to (Ts-T1). Times.CxF is not less than Qrmin, the controller 3 starts the first heating system 11 to heat, and obtains Qr, wherein Qr is a change value of the controller 3 which takes Ts = T2 as a target and dynamically adjusts F change, and further determines whether Ts is not less than T3+0.5, wherein 0.5 is a value of a, if yes, obtains Qe, wherein Qe is electromagnetic heating real-time power of the constant-temperature water storage tank, and Qe is a change value of the controller 3 which takes Ts = T3+0.5 as a target and dynamically adjusts F change until Ts is less than T3+0.5, and closes the electromagnetic heating of the constant-temperature water storage tank. If Ts is less than T3+0.5, only the first heating system 11 is started to obtain Qr. Similarly, if (Ts-T1). Times.CxF < Qrmin, only Qe is acquired.
Example 3
As shown in fig. 9, a heating control device of a gas water heater includes: obtaining module 81, calculation module 82 and control module 83, obtaining module 81 and being suitable for the target temperature who obtains heat exchanger 1's the temperature of intaking water, the discharge of the water inlet of heat exchanger 1 and gas heater, calculation module 82 is connected with obtaining module 81 communication, and calculation module 82 calculates the power that gas heater needs to be exported and satisfies according to intaking water temperature, discharge and target temperature: q = (Ts-T1) × C × F, where Ts denotes a target water temperature of the gas water heater, T1 denotes an intake water temperature of the heat exchanger, C denotes a specific heat capacity of water, F denotes a water flow rate of a water inlet of the heat exchanger, and Q denotes power that the gas water heater needs to output. The control module 83 is connected to the calculation module 82 in a communication manner, so that the control module 83 activates the first heating system 11 and/or the second heating system 21 according to the power required to be output by the gas water heater calculated by the calculation module 82.
When the second heating system 21 is introduced, the minimum power of the second heating system 21 can be 120W, so that the minimum power of the gas water heater is reduced to 120W, the output power range of the gas water heater can be expanded, and the problem that the outlet water temperature of the gas water heater is too high under a specific condition can be solved.
Further, as shown in fig. 10, the obtaining module 81 also obtains the minimum heating power of the first heating system and the minimum heating power of the second heating system, and the heating control device of the gas water heater further includes:
and the judging module 84 is in communication connection with the obtaining module 81 to judge the size between the power required to be output by the gas water heater and the minimum heating power of the first heating system and the minimum heating power of the second heating system. The control module 83 is in communication connection with the judging module 84, and the control module 83 is suitable for starting the first heating system to heat when the power required to be output by the gas water heater is greater than or equal to the minimum heating power of the first heating system; or when the output power of the gas water heater is less than the minimum heating power of the first heating system, the second heating system is started to heat.
Further, as shown in fig. 11, the obtaining module 81 includes: the device comprises a first obtaining unit 811, a second obtaining unit 812 and a third obtaining unit 813, wherein the first obtaining unit 811 is suitable for obtaining a target water temperature of the gas water heater, a water inlet temperature of the heat exchanger, a water temperature of a water outlet of the heat exchanger and a water temperature of a water outlet of the heatable water storage tank, the second obtaining unit 812 is suitable for obtaining a water flow rate of a water inlet of the heat exchanger, the third obtaining unit 813 is respectively in communication connection with the first obtaining unit 811 and the second obtaining unit 812, and the third obtaining unit 813 is suitable for calculating and obtaining power required to be output by the gas water heater according to the water inlet temperature of the heat exchanger, the target water temperature of the gas water heater and the water flow rate of the water inlet of the heat exchanger. The judging module 84 is in communication connection with the first obtaining unit 811, the second obtaining unit 812 and the third obtaining unit 813, respectively, and the judging module 84 is further adapted to compare the sum of the inlet water temperature of the heat exchanger and the second water temperature adjusting value with the target water temperature of the burner, the sum of the water temperature of the water outlet of the heatable water storage tank and the first water temperature adjusting value with the target water temperature of the burner, the sum of the target water temperature of the gas water heater and the water temperature of the water outlet of the heat exchanger, the sum of the target water temperature of the burner and the water temperature of the water outlet of the heatable water storage tank, and the sum of the water inlet water temperature of the heat exchanger and the target water temperature of the burner with the target water temperature of the water outlet of the heatable water storage tank.
Example 4
A computer-readable storage medium having stored thereon a computer program which, when executed by a processor, implements the heating control method of any one of the gas water heaters.
It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above may be implemented by a computer program that instructs the relevant hardware to perform the processes, and the computer program may be stored in a computer readable storage medium, and when executed, may include the processes of the embodiments of the methods described above. The storage medium may be a magnetic Disk, an optical Disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a Flash Memory (Flash Memory), a Hard Disk (Hard Disk Drive, abbreviated as HDD), a Solid State Drive (SSD), or the like; the storage medium may also comprise a combination of memories of the kind described above.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.
Claims (12)
1. A gas water heater, comprising:
a heat exchanger (1) provided with a first heating system (11);
the heatable water storage tank (2) is connected with the water outlet of the heat exchanger and is provided with a second heating system (21);
a first temperature sensor (4) adapted to detect a temperature of incoming water of the heat exchanger (1);
the controller (3) is in communication connection with the first heating system (11), the second heating system (21) and the first temperature sensor (4) respectively, so that the controller (3) calculates the power output by the gas water heater to meet the following requirements: q = (Ts-T1). Times.CxF, wherein Ts represents the target water temperature of the gas water heater, T1 represents the inlet water temperature of the heat exchanger detected by the first temperature sensor (4), C represents the specific heat capacity of water, F represents the water flow rate of the water inlet of the heat exchanger, Q represents the power required to be output by the gas water heater, and the first heating system (11) and/or the second heating system (21) are/is started according to the power required to be output by the gas water heater.
2. Gas water heater according to claim 1, wherein the heatable water storage tank (2) is provided with a water storage cavity (201), the second heating system (21) comprising:
the electromagnetic heating coil (211) is arranged around the cavity wall of the water storage cavity (201);
wherein the electromagnetic heating coil (211) is electrically connected with the controller (3).
3. Gas water heater according to claim 2, characterized in that said second heating system (21) further comprises:
and the plastic package (212) is provided with a sealing cavity so as to cover the electromagnetic heating coil (211).
4. Gas water heater according to claim 2, characterized in that said heatable water storage tank (2) further comprises:
a foaming layer (22) enclosing an annular cavity (202) and the water storage cavity (201), wherein the annular cavity (202) surrounds the water storage cavity (201);
wherein the second heating system (21) is provided in the annular chamber (202).
5. The gas water heater of any one of claims 1 to 4, further comprising:
a second temperature sensor (6) adapted to detect the water temperature at the outlet of the heat exchanger and to send a second water temperature signal;
the third temperature sensor (7) is suitable for detecting the water temperature of the water outlet of the heatable water storage tank and sending a third water temperature signal;
the controller (3) is in communication connection with the second temperature sensor (6) and the third temperature sensor (7) respectively, the controller (3) is suitable for acquiring the second water temperature signal sent by the second temperature sensor (6) and the third water temperature signal sent by the third temperature sensor (7), when F is larger than or equal to F1 and Ts is larger than or equal to T + a, the controller (3) starts the first heating system (11) according to Q = (Ts-T1) xCxF, and when Q is larger than or equal to Qrmin, the controller (3) starts the first heating system (11) and controls the heating power of the first heating system (11) to be adjusted between Qrmin and Qrmax until T2 meets: t2= Ts, if F is larger than or equal to F1 and Ts is larger than or equal to T + a, the controller (3) starts the second heating system (21) according to Q = (Ts-T1). Times.CxF, and when Qrmin is larger than Q and larger than or equal to Qemin, the controller (3) controls the heating power of the second heating system (21) to be adjusted between Qemin and Qemax until T3 meets the following conditions: ts = T3; otherwise, neither the first heating system (11) nor the second heating system (21) is started; wherein Qr represents the heating power of the first heating system, qe represents the heating power of the second heating system, qrmax represents the maximum heating power of the first heating system, qrmin represents the minimum heating power of the first heating system, qemax represents the maximum heating power of the second heating system, qemin represents the minimum heating power of the second heating system, T2 represents the water temperature at the water outlet of the heat exchanger, T3 represents the water temperature at the water outlet of the heatable water storage tank, a represents the water temperature adjusting value, and F1 represents the preset starting water flow rate of the water heater.
6. A heating control method of a gas water heater is characterized by comprising the following steps:
acquiring the water inlet temperature of a heat exchanger (1), the water flow of a water inlet of the heat exchanger (1) and the target water temperature of a gas water heater;
calculating the power required to be output by the gas water heater according to the inlet water temperature, the water flow and the target water temperature, wherein the power required to be output by the gas water heater meets the following requirements: q = (Ts-T1) xC x F, wherein Ts represents the target water temperature of the gas water heater, T1 represents the inlet water temperature of the heat exchanger, C represents the specific heat capacity of water, F represents the water flow of the water inlet of the heat exchanger, and Q represents the power required to be output by the gas water heater;
and starting the first heating system (11) and/or the second heating system (21) according to the power required to be output by the gas water heater.
7. The heating control method of a gas water heater according to claim 6, characterized in that starting the first heating system (11) and/or the second heating system (21) according to the power required to be output by the gas water heater comprises:
acquiring the minimum heating power of a first heating system and the minimum heating power of a second heating system;
when the power required to be output by the gas water heater is greater than or equal to the minimum heating power of the first heating system, starting the first heating system (11) to heat; or
And when the power required to be output by the gas water heater is smaller than the minimum heating power of the first heating system and larger than the minimum heating power of the second heating system, starting the second heating system (21) to heat.
8. The heating control method of a gas water heater according to claim 7, wherein when the power required to be output by the gas water heater is greater than or equal to the minimum heating power of the first heating system, the first heating system (11) is started to heat, and the method specifically comprises:
acquiring the water temperature of a water outlet of the heat exchanger;
acquiring the water temperature of a water outlet of a heatable water storage tank;
when F is larger than or equal to F1 and Ts is larger than or equal to T + a, according to Q = (Ts-T1). Times.CxF, when Q is larger than or equal to Qrmin, starting the first heating system (11) and controlling the power of the first heating system (11) to be adjusted between Qrmin and Qrmax until T2 meets the following conditions: t2= Ts;
when T2 is smaller than Ts and (Ts-T2). Times.CxF is larger than or equal to Qemin, the second heating system (21) is started to heat, and the power of the second heating system (21) is controlled to be adjusted between Qemin and Qemax until TS meets the following conditions: t3= Ts or (Ts-T2). Times.CxF < Qemin, turning off the second heating system (21);
wherein Qrmax denotes a maximum heating power of the first heating system, and Qrmin denotes a minimum heating power of the first heating system; qemax represents the maximum heating power of the second heating system, qemin represents the minimum heating power of the second heating system, T2 represents the water temperature at the water outlet of the heat exchanger, T3 represents the water temperature at the water outlet of the heatable water storage tank, a represents the water temperature regulating value, and F1 represents the preset starting water flow of the water heater.
9. The heating control method of the gas water heater according to claim 8, wherein if F ≧ F1 and Ts ≧ T + a, according to Q = (Ts-T1). Times.CxF, and if Qrmin > Q ≧ Qemin, the second heating system (21) is started and the heating power of the second heating system (21) is controlled to be adjusted between Qemin and Qemax until T3 satisfies: ts = T3;
otherwise, neither the first heating system (11) nor the second heating system (21) is activated.
10. The heating control method of a gas water heater according to any one of claims 7 to 9, characterized by further comprising:
and when Ts is more than or equal to T1+1 and F is more than or equal to F1, starting to obtain the power required to be output by the gas water heater.
11. A heating control device for a gas water heater, comprising:
the acquisition module (81) is suitable for acquiring the inlet water temperature of the heat exchanger (1), the water flow rate of a water inlet of the heat exchanger (1) and the target water temperature of the gas water heater;
the calculation module (82) is in communication connection with the acquisition module (81), and the calculation module (82) calculates the power required to be output by the gas water heater according to the inlet water temperature, the water flow and the target water temperature to meet the following requirements: q = (Ts-T1) xC x F, wherein Ts represents the target water temperature of the gas water heater, T1 represents the inlet water temperature of the heat exchanger, C represents the specific heat capacity of water, F represents the water flow of the water inlet of the heat exchanger, and Q represents the power required to be output by the gas water heater;
and the control module (83) is in communication connection with the calculation module (82), so that the control module (83) starts the first heating system (11) and/or the second heating system (21) according to the power required to be output by the gas water heater calculated by the calculation module (82).
12. The heating control device of a gas water heater according to claim 11, said acquisition module (81) further acquiring a minimum heating power of a first heating system and a minimum heating power of a second heating system, characterized in that the heating control device of a gas water heater further comprises:
the judging module (84) is in communication connection with the obtaining module (81) so as to judge the size between the power required to be output by the gas water heater and the minimum heating power of the first heating system and the minimum heating power of the second heating system;
the control module (83) is in communication connection with the judging module (84), so that the control module (83) is suitable for starting the first heating system to heat when the power required to be output by the gas water heater is greater than or equal to the minimum heating power of the first heating system; or when the power required to be output by the gas water heater is smaller than the minimum heating power of the first heating system and larger than the minimum heating power of the second heating system, the second heating system is started to heat.
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