CN114183931A - Control method and control device of heater - Google Patents
Control method and control device of heater Download PDFInfo
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- CN114183931A CN114183931A CN202111543446.5A CN202111543446A CN114183931A CN 114183931 A CN114183931 A CN 114183931A CN 202111543446 A CN202111543446 A CN 202111543446A CN 114183931 A CN114183931 A CN 114183931A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/20—Arrangement or mounting of control or safety devices
- F24H9/2007—Arrangement or mounting of control or safety devices for water heaters
- F24H9/2035—Arrangement or mounting of control or safety devices for water heaters using fluid fuel
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- Heat-Pump Type And Storage Water Heaters (AREA)
Abstract
The invention provides a control method and a control device of a heater, wherein the control method comprises the following steps: after the heater is started to heat, acquiring the outlet water temperature of the heater; judging whether the outlet water temperature is greater than a first preset threshold value or not; when the water outlet temperature is higher than the first preset threshold value, judging whether the heater is heated with minimum power or not; and if so, controlling the heater to extinguish. By the arrangement, the temperature of the outlet water is ensured to be stabilized within the range of the first preset threshold value. If the heater heats with the minimum power, the outlet water temperature is still larger than the first preset threshold, so the heater is required to be extinguished, the outlet water temperature can be controlled not to exceed the water use temperature set by the user, and the normal use of the user is ensured. Meanwhile, a buffer water tank does not need to be additionally arranged on the heater, and the production cost and the installation space of the gas water heater can be reduced.
Description
Technical Field
The invention relates to the technical field of household appliances, in particular to a control method and a control device of a heater.
Background
At present, in the actual use process of a heater such as a wall-mounted furnace or a water heater in summer, the inlet water temperature of tap water is extremely high in partial areas. In addition, the water outlet flow rate in the home of the user is not always in a stable state, and when the water outlet flow rate is small, even if the heater operates at the minimum heating power, the water outlet temperature still rises to more than 40 degrees, so that the user cannot use the heater because the water outlet temperature is too high.
Since the current heaters are limited by the number of segments of the combustion fire row, the minimum heating power cannot be reduced. Meanwhile, the installation of the buffer water tank on the heater increases the cost and installation space.
Disclosure of Invention
Therefore, the technical problem to be solved by the present invention is to overcome the defect that the heater cannot be used due to too high outlet water temperature of the heater in the prior art, thereby providing a control method and a control device for the heater.
The embodiment of the invention provides a control method of a heater, which comprises the following steps: after the heater is started to heat, acquiring the outlet water temperature of the heater; judging whether the outlet water temperature is greater than a first preset threshold value or not; when the water outlet temperature is higher than the first preset threshold value, judging whether the heater is heated with minimum power or not; and if so, controlling the heater to extinguish.
Optionally, after the controlling the heater to be turned off, the method further comprises: obtaining the temperature of the effluent; and when the outlet water temperature is lower than a second preset threshold value, controlling the heater to start heating, wherein the second preset threshold value is lower than the first preset threshold value.
Optionally, when the inlet water temperature is greater than the water temperature in the normal state and the outlet water flow is in the abnormal state, after controlling the heater to start heating, the method further includes: acquiring the heating rate of the outlet water temperature; judging whether the temperature rise rate is greater than a preset temperature rise rate or not; and if so, controlling the heater to stop heating.
Optionally, the method further comprises: and when the heating rate is less than or equal to the heating rate, controlling the water heater to continue heating.
Optionally, after controlling the heater to stop heating, the method further includes: judging whether the water outlet signal is acquired or not; if so, acquiring the water outlet temperature of the heater according to the water outlet signal; if not, executing the step of judging whether the outlet water temperature is greater than a first preset threshold value.
Optionally, when the water inlet temperature is in a normal state and the water outlet flow is in a normal state, controlling the heater to start heating includes: controlling the heater to heat with minimum power.
Optionally, the method further comprises: and when the outlet water temperature is less than or equal to the first preset threshold value, carrying out PID (proportion integration differentiation) adjustment on the heating power of the heater. .
An embodiment of the present invention further provides a control device for a heater, where the control device includes: the acquisition module is used for acquiring the water outlet temperature of the heater after the heater is started to heat; the judging module is used for judging whether the outlet water temperature is greater than a first preset threshold value or not; the control module is used for judging whether the heater is heated at the minimum power or not when the outlet water temperature is greater than the first preset threshold value; and if so, controlling the heater to extinguish.
An embodiment of the present invention further provides an electronic device, including: the control method comprises a memory and a processor, wherein the memory and the processor are connected with each other in a communication mode, computer instructions are stored in the memory, and the processor executes the computer instructions so as to execute the control method of any one of the above embodiments.
An embodiment of the present invention further provides a computer-readable storage medium, where the computer-readable storage medium stores computer instructions, and the computer instructions are used to enable the computer to execute the control method described in any of the above embodiments.
The technical scheme of the invention has the following advantages:
1. the embodiment of the invention provides a control method of a heater, which comprises the following steps: after the heater is started to heat, acquiring the outlet water temperature of the heater; judging whether the outlet water temperature is greater than a first preset threshold value or not; when the water outlet temperature is higher than the first preset threshold value, judging whether the heater is heated with minimum power or not; and if so, controlling the heater to extinguish.
So set up, because the water flow of leaving in the user's house is not always in steady state, when water flow is less, when opening the heating back, as long as the leaving water temperature of heater surpasss first preset threshold value just control the heater and heat with minimum power earlier to guarantee that leaving water temperature is stabilized within first preset threshold value scope. If the heater heats with the minimum power, the outlet water temperature is still larger than the first preset threshold, so the heater is required to be extinguished, the outlet water temperature can be controlled not to exceed the water use temperature set by the user, and the normal use of the user is ensured. Meanwhile, a buffer water tank does not need to be additionally arranged on the heater, and the production cost and the installation space of the gas water heater can be reduced.
2. In the embodiment of the invention, the heater is controlled to start heating when the outlet water temperature is maintained within the first preset threshold value and is smaller than a second preset threshold value; acquiring the heating rate of the outlet water temperature; judging whether the temperature rise rate is greater than a preset temperature rise rate or not; and if so, controlling the heater to stop heating.
So set up, can be when the play water temperature is less than the second and predetermine the threshold value, promptly when reducing to the settlement temperature, control heater start heating to can prevent that the play water temperature is less than the settlement temperature when the heater is in flame-out state. And when the heating rate is greater than the preset heating rate, the heater is controlled to stop heating, so that flameout can be performed in advance, the water outlet temperature is prevented from being higher than the set temperature of a user, and the normal use of the user is ensured.
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 method of controlling a heater in embodiment 1 of the present invention;
fig. 2 is a flowchart of a method for controlling a heater according to embodiment 1 of the present invention.
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; the two elements may be directly connected or indirectly connected through an intermediate medium, or may be communicated with each other inside the two elements, or may be wirelessly connected or wired connected. 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.
At present, in the actual use process of a heater such as a wall-mounted furnace or a water heater in summer, the inlet water temperature of tap water is extremely high in partial areas. In addition, the water outlet flow rate in the home of the user is not always in a stable state, and when the water outlet flow rate is small, even if the heater operates at the minimum heating power, the water outlet temperature still rises to more than 40 degrees, so that the user cannot use the heater because the water outlet temperature is too high. Since the current heaters are limited by the number of segments of the combustion fire row, the minimum heating power cannot be reduced. Meanwhile, the installation of the buffer water tank on the heater increases the cost and installation space.
Therefore, the technical problem to be solved by the present invention is to overcome the defect that the heater cannot be used due to too high outlet water temperature of the heater in the prior art, thereby providing a control method and a control device for the heater.
Example 1
As shown in fig. 1 and 2, an embodiment of the present invention provides a control method of a heater, including:
s1, obtaining the water outlet temperature of the heater after the heater is started to heat;
specifically, in the embodiment of the present invention, when a user uses a heater, such as a wall-hanging stove or a water heater, the user needs to open a faucet to discharge water. Because the inside water flow sensor that is provided with of heater, so the heater can detect rivers signal through water flow sensor, then can control the three-way valve in the water route and switch the water route to life hot water mode. Then, the fan and the water pump of the heater keep running state, and open the gas valve to ignite. At this time, the heater may adjust heating power of the heater by PID. After the heater is started to heat, the temperature of the outlet water is detected through a temperature sensor arranged in the heater.
S2, judging whether the outlet water temperature is greater than a first preset threshold value or not;
and, the user can realize that the required water temperature is set on the control panel of the heater, and after the water temperature is set, the water temperature is called as the set temperature. With the continuous heating of the heater to the cold water, the temperature sensor arranged in the heater is required to detect the outlet water temperature, and whether the outlet water temperature is greater than a first preset threshold value is judged. The first preset threshold value is slightly larger than the set temperature, and the difference between the first preset threshold value and the set temperature can be between 0.5 ℃ and 1.5 ℃.
Of course, a person skilled in the art may adjust the difference between the first preset threshold and the set temperature according to actual situations, and this embodiment is merely an example, but not limited to this, and the same technical effect may be achieved.
S3, when the effluent temperature is higher than the first preset threshold value, judging whether the heater is heated at the minimum power; and if so, controlling the heater to extinguish.
When the heater detects that the water storage temperature is higher than the first preset threshold value, the water temperature is slightly higher than the set temperature, and at the moment, the heater can be controlled to heat with the minimum power, so that the water outlet temperature is ensured to be stabilized within the range of the first preset threshold value. If the heater is heated with the minimum power, the outlet water temperature is still higher than the first preset threshold value, so the heater needs to be controlled to be turned off, and the heater needs to be prevented from continuously heating cold water. Especially, when the water flow of the user is small, the temperature rise of the cold water in the heater is obvious.
Therefore, the water outlet temperature can be controlled not to exceed the water use temperature set by the user, and the normal use of the user is ensured. Meanwhile, a buffer water tank does not need to be additionally arranged on the heater, and the production cost and the installation space of the gas water heater can be reduced.
In the embodiment of the present invention, as an optional implementation manner, after step S3, the method may further include:
s4, acquiring the temperature of the effluent;
and S5, when the outlet water temperature is lower than a second preset threshold value, controlling the heater to start heating, wherein the second preset threshold value is lower than the first preset threshold value.
As the user continues to use hot water, the outlet water temperature is continually decreasing. The outlet water temperature is obtained in real time through the temperature detection device, and when the outlet water temperature enters the first preset threshold value again and is smaller than the second preset threshold value, the outlet water temperature is close to the set temperature of the user, so that the heater can be controlled to be started again to heat in advance. The second preset threshold is smaller than the first preset threshold, and the second preset threshold is larger than the set temperature of the user.
Specifically, the difference between the first preset threshold and the set temperature may be between 0.5 ℃ and 1.5 ℃, and the difference between the second preset threshold and the set temperature may be between 0.3 ℃ and 1 ℃.
Of course, the manner of obtaining the outlet water temperature in real time is only illustrated by way of example, but not limited thereto, and those skilled in the art may change the manner according to actual situations, so as to achieve the same technical effect.
Further, in the embodiment of the present invention, when the inlet water temperature is higher than the water temperature in the normal state, and the outlet water flow rate is in the abnormal state, after "controlling the heater to start heating" in step S4, the method further includes:
s6, acquiring the heating rate of the effluent temperature; judging whether the temperature rise rate is greater than a preset temperature rise rate or not;
and S7, if so, controlling the heater to stop heating.
Specifically, in the embodiment of the present invention, the temperature of the inlet water may be obtained by providing a temperature sensor at the inlet pipe of the heater, and the flow rate of the outlet water may be obtained by providing a flow meter at the outlet pipe of the heater. In general, the water inlet pipe of the heater is communicated with the outside, so that the water inlet pipe of the heater is easily influenced by the external environment.
Of course, the embodiment is only to illustrate the manner of acquiring the inlet water temperature and the outlet water flow, but not limited thereto, and a person skilled in the art may change the manner of acquiring the inlet water temperature and the outlet water flow according to actual situations, so as to achieve the same technical effect.
When the temperature of intaking is greater than the temperature of normal state, just when the water flow is in abnormal state, it is higher to explain ambient temperature, causes the temperature of inlet tube also higher for the temperature of intaking can be greater than the temperature under the normal state. The inlet water temperature is tap water temperature, the normal state is generally below 25 ℃, the outlet water flow is regulated according to municipal pipeline pressure, and the normal state can generally reach more than 6L/min. For example, in summer, the inlet tube is influenced by external high temperature, so that the inlet water temperature is obviously close to the set temperature of a user, the difference between the set temperature and the inlet water temperature is small, and the outlet water temperature is easily beyond a first preset threshold value under the heating of minimum power.
And after the heater is controlled to start heating again, the temperature rise rate in a preset time period is taken, for example, 3 seconds or 5 seconds, and when the current temperature rise rate is detected to be greater than the preset temperature rise rate, the heater is controlled to shut off in advance, and the gas valve is closed. So set up, can be when the play water temperature is less than the second and predetermine the threshold value, promptly when reducing to the settlement temperature, control heater start heating to can prevent that the play water temperature is less than the settlement temperature when the heater is in flame-out state. And when the heating rate is greater than the preset heating rate, the heater is controlled to stop heating, so that flameout can be performed in advance, the water outlet temperature is prevented from being higher than the set temperature of a user, and the normal use of the user is ensured.
And S8, if not, controlling the water heater to continue heating when the heating rate is less than or equal to the heating rate.
And at the moment, the temperature rise rate is slow, so that when the current temperature rise rate is less than or equal to the preset temperature rise rate, the heating power of the heater is adjusted through PID.
Further, in the embodiment of the present invention, after step S7, the method may further include:
s9, judging whether the water outlet signal is acquired or not; if so, acquiring the water outlet temperature of the heater according to the water outlet signal; if not, executing the step of judging whether the outlet water temperature is greater than a first preset threshold value.
Therefore, whether the water outlet signal is obtained or not can be judged by the flow meter, and if so, namely, the user is always in the water using state, the step S1 is executed; if the water outlet signal is not acquired, it is indicated that the user has closed the water, step S2 is executed, when the stored water temperature is lower than or equal to the first preset threshold, the PID adjustment mode can be directly entered, and the heater is prevented from being frequently turned off and heated due to the cyclic execution of steps S4 to S8 under the condition that the heater is at a constant temperature, so that the phenomenon that the temperature of the outlet water is suddenly cooled and suddenly heated is caused.
In the embodiment of the present invention, as an optional implementation manner, after step S3, the method may further include:
and S10, when the water inlet temperature is in a normal state and the water outlet flow is in a normal state, controlling the heater to heat with minimum power.
Specifically, when the inlet water temperature is in a normal state and the outlet water flow is in a normal state, it indicates that a user is in a normal use state, and the temperature of the inlet water pipe is also in a normal state, at this time, because the outlet water temperature of the heater is already within a first preset threshold, the heater is controlled to heat with minimum power, the outlet water temperature is continuously maintained within the first preset threshold, and the outlet water temperature is kept to fluctuate near a set temperature.
In the embodiment of the present invention, as an optional implementation manner, after step S10, the method may further include:
s11, when the effluent temperature is less than or equal to the first preset threshold value, carrying out PID (proportion integration differentiation) adjustment on the heating power of the heater;
specifically, when the outlet water temperature is less than or equal to the first preset threshold, it indicates that the water consumption of the user is large, so that the water temperature gradually decreases and is lower than the first preset threshold. In this case, the heating power of the heater may be PID-adjusted, and the water temperature of the heater may be heated to the vicinity of the first preset threshold.
Example 2
An embodiment of the present invention further provides a control device for a heater, where the control device includes:
the acquisition module is used for acquiring the water outlet temperature of the heater after the heater is started to heat; for details, refer to the step S1 of the above embodiment, and are not described herein again.
The judging module is used for judging whether the outlet water temperature is greater than a first preset threshold value or not; for details, refer to the step S2 of the above embodiment, and are not described herein again.
The control module is used for judging whether the heater is heated at the minimum power or not when the outlet water temperature is greater than the first preset threshold value; and if so, controlling the heater to extinguish. For details, refer to the step S3 of the above embodiment, and are not described herein again.
When the heater detects that the water storage temperature is higher than the first preset threshold value, the water temperature is slightly higher than the set temperature, and at the moment, the heater can be controlled to heat with the minimum power, so that the water outlet temperature is ensured to be stabilized within the range of the first preset threshold value. If the heater is heated with the minimum power, the outlet water temperature is still higher than the first preset threshold value, so the heater needs to be controlled to be turned off, and the heater needs to be prevented from continuously heating cold water. Especially, when the water flow of the user is small, the temperature rise of the cold water in the heater is obvious. Therefore, the water outlet temperature can be controlled not to exceed the water use temperature set by the user, and the normal use of the user is ensured. Meanwhile, a buffer water tank does not need to be additionally arranged on the heater, and the production cost and the installation space of the gas water heater can be reduced.
Example 3
An embodiment of the present invention further provides an electronic device, including: the control method comprises a memory and a processor, wherein the memory and the processor are connected with each other in a communication mode, computer instructions are stored in the memory, and the processor executes the computer instructions so as to execute the control method of any one of the above embodiments.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present invention has been described with reference to a method according to an embodiment of the invention. It will be understood that each flow of the flowcharts, and combinations of flows in the flowcharts, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows.
Example 4
An embodiment of the present invention further provides a computer-readable storage medium, where the computer-readable storage medium stores computer instructions, and the computer instructions are used to enable the computer to execute any one of the control methods.
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 (10)
1. A method of controlling a heater, comprising:
after the heater is started to heat, acquiring the outlet water temperature of the heater;
judging whether the outlet water temperature is greater than a first preset threshold value or not;
when the water outlet temperature is higher than the first preset threshold value, judging whether the heater is heated with minimum power or not; and if so, controlling the heater to extinguish.
2. The control method according to claim 1, characterized by comprising, after the controlling the heater to be turned off:
acquiring the outlet water temperature;
and when the outlet water temperature is lower than a second preset threshold value, controlling the heater to start heating, wherein the second preset threshold value is lower than the first preset threshold value.
3. The control method according to claim 2, wherein when the inlet water temperature is higher than the normal water temperature and the outlet water flow rate is in an abnormal state, after controlling the heater to start heating, the method further comprises:
acquiring the heating rate of the outlet water temperature;
judging whether the temperature rise rate is greater than a preset temperature rise rate or not;
and if so, controlling the heater to stop heating.
4. The control method according to claim 3, characterized by further comprising:
and when the heating rate is less than or equal to the heating rate, controlling the water heater to continue heating.
5. The control method according to claim 3 or 4, further comprising, after controlling the heater to stop heating:
judging whether the water outlet signal is acquired or not;
if so, acquiring the water outlet temperature of the heater according to the water outlet signal;
if not, executing the step of judging whether the outlet water temperature is greater than a first preset threshold value.
6. The control method of claim 2, wherein controlling the heater to start heating when the inlet water temperature is in a normal state and the outlet water flow is in a normal state comprises:
controlling the heater to heat with minimum power.
7. The control method according to any one of claims 2 to 4, characterized by further comprising:
and when the outlet water temperature is less than or equal to the first preset threshold value, carrying out PID (proportion integration differentiation) adjustment on the heating power of the heater.
8. A control device for a heater, comprising:
the acquisition module is used for acquiring the water outlet temperature of the heater after the heater is started to heat;
the judging module is used for judging whether the outlet water temperature is greater than a first preset threshold value or not;
the control module is used for judging whether the heater is heated at the minimum power or not when the outlet water temperature is greater than the first preset threshold value; and if so, controlling the heater to extinguish.
9. An electronic device, comprising: a memory and a processor, the memory and the processor being communicatively connected to each other, the memory having stored therein computer instructions, the processor executing the computer instructions to perform the control method of any one of claims 1 to 7.
10. A computer-readable storage medium storing computer instructions for causing a computer to execute the control method according to any one of claims 1 to 7.
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| CN114794884A (en) * | 2022-04-29 | 2022-07-29 | 佛山市顺德区美的饮水机制造有限公司 | Instant heating water dispenser, heating control method and device thereof and storage medium |
| CN115095986A (en) * | 2022-06-30 | 2022-09-23 | 九阳股份有限公司 | Control method of instant heating water outlet machine |
| CN115597228A (en) * | 2022-10-20 | 2023-01-13 | 珠海格力电器股份有限公司（Cn） | Gas water heater and heating control method and device |
| CN115657759A (en) * | 2022-09-15 | 2023-01-31 | 华中光电技术研究所（中国船舶重工集团公司第七一七研究所） | Composite temperature control quartz flexible accelerometer structure |
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