CN114183929B - Control method and control device of gas water heater - Google Patents
Control method and control device of gas water heater Download PDFInfo
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- CN114183929B CN114183929B CN202111542232.6A CN202111542232A CN114183929B CN 114183929 B CN114183929 B CN 114183929B CN 202111542232 A CN202111542232 A CN 202111542232A CN 114183929 B CN114183929 B CN 114183929B
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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
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Abstract
The invention discloses a control method and a control device of a gas water heater, wherein the control method comprises the following steps: acquiring the current heating rate of the gas water heater; determining a heat load correction mode of the gas water heater according to the relation between the current heating rate and the heating rate interval; and adjusting the heat load of the gas water heater by using the heat load correction mode. According to the arrangement, the heat load correction mode of the gas water heater can be determined according to the relation between the current heating rate and the heating rate interval, and the heating power of the gas water heater is adjusted through the heat load correction mode, so that the heating heat load and the heating rate of the gas water heater can be adjusted and controlled. Therefore, temperature rise overshoot can be reduced while increasing the heating speed.
Description
Technical Field
The invention relates to the technical field of gas water heaters, in particular to a control method and a control device of a gas water heater.
Background
The use of gas water heaters has become very popular today. The gas water heater rapidly heats cold water flowing through the heat exchanger through a large amount of heat generated instantly when gas is fully combusted. Compared with an electric water heater, the electric water heater has the advantages of high heat exchange efficiency, low cost and instant heating after use, and is popular with users. When a user is using a gas water heater, a section of cold water is usually discharged after a hot water tap is opened, and then hot water can be used.
In principle, the total amount of heat required during heating is determined, and the heating time is shortened as the instantaneous heat load is larger, that is, the heating power is larger. However, the instantaneous heat load is too large, which causes a large temperature overshoot during heating, and the water temperature is likely to exceed the set temperature. Particularly, when the water flow is small, the temperature rise overshoot can reach the highest value, and the risk of high-temperature scalding is possibly brought.
The existing ignition control method of the constant-temperature gas water heater adopts a pre-estimated constant-temperature algorithm to obtain a preset heat load, approaches a target temperature value by adjusting a gas valve channel, and then carries out fine adjustment through PID (proportion integration differentiation) so as to reduce the water temperature deviation. The existing control method can reduce temperature rise overshoot during heating, but the heating speed is also limited, and the heating time is difficult to further shorten.
Therefore, in the prior art, the gas water heater is difficult to reduce temperature rise overshoot while increasing the heating speed.
Disclosure of Invention
The technical problem to be solved by the embodiment of the invention is that the existing gas water heater is difficult to simultaneously increase the heating speed and reduce temperature rise overshoot, thereby providing a control method and a control device of the gas water heater.
According to a first aspect, an embodiment of the present invention provides a control method for a gas water heater, the control method including: acquiring the current heating rate of the gas water heater; determining a heat load correction mode of the gas water heater according to the relation between the current heating rate and the heating rate interval; and adjusting the heat load of the gas water heater by using the heat load correction mode.
Optionally, determining a heat load correction mode of the gas water heater according to a relationship between the current temperature rise rate and a preset temperature rise rate interval, including: when the current heating rate is smaller than the minimum value of the heating rate interval, the heat load correction mode is to provide a preset compensation amount; and when the current temperature rise rate is larger than the maximum value of the temperature rise rate interval, the heat load correction mode is to provide a preset overshoot control amount.
Optionally, adjusting the heat load of the gas water heater by using the heat load correction manner includes: when the heat load correction mode is to provide a preset compensation amount, acquiring the current heat load and the compensation amount of the gas water heater, and compensating the current heat load by using the compensation amount; acquiring a second threshold, and canceling the compensation quantity when the outlet water temperature reaches the second threshold; when the heat load correction mode is that a preset overshoot control quantity is provided, the current heat load and the overshoot control quantity of the gas water heater are obtained, and the current heat load is controlled by utilizing the overshoot control quantity; and when the outlet water temperature reaches a second threshold value, acquiring the current heat load of the gas water heater, and adjusting the current heat load by using the overshoot control quantity.
Optionally, the obtaining the second threshold includes: when the current heating rate is smaller than the minimum value of the heating rate interval, determining a second threshold according to a preset target water outlet temperature and a first correction quantity; when the current temperature rising rate is larger than the maximum value of the temperature rising rate interval, determining a second threshold according to a preset target outlet water temperature and a second correction quantity, wherein the second correction quantity is larger than the first correction quantity.
Optionally, the control method further includes: and when the current heating rate is within the heating rate interval, keeping the heating state of the gas water heater.
Optionally, before the relationship between the current temperature-increasing rate and a preset temperature-increasing rate interval is determined, the method further includes: acquiring heating parameters of the gas water heater; and determining the temperature rise rate interval according to the heating parameters.
Optionally, determining the temperature-rise rate interval according to the heating parameter includes: judging whether the heating parameter is larger than a preset first interval or not; if so, taking the first interval as the temperature rise rate interval; and if not, taking the second interval as the temperature rise rate interval.
According to a second aspect, an embodiment of the present invention further provides a control device for a gas water heater, the control device including: the first acquisition module is used for acquiring the current heating rate of the gas water heater; the processing module is used for determining a heat load correction mode of the gas water heater according to the relation between the current heating rate and the heating rate interval; and the adjusting module is used for adjusting the heat load of the gas water heater by using the heat load correction mode.
According to a third aspect, an embodiment of the present invention further provides an electronic device, including: the control method of any of the above embodiments is implemented by a storage and a processor, the storage and the processor are communicatively connected with each other, the storage stores computer instructions, and the processor executes the computer instructions to execute the control method of any of the above embodiments.
According to a fourth aspect, an embodiment of the present invention further provides a computer-readable storage medium, which stores computer instructions for causing the computer to execute the control method according to any one of the above embodiments.
The embodiment of the invention has the following beneficial effects:
1. the embodiment of the invention provides a control method of a gas water heater, which comprises the following steps: acquiring the current heating rate of the gas water heater; determining a heat load correction mode of the gas water heater according to the relation between the current heating rate and the heating rate interval; and adjusting the heat load of the gas water heater by using the heat load correction mode.
According to the arrangement, the heat load correction mode of the gas water heater can be determined according to the relation between the current heating rate and the heating rate interval, and the heat load of the gas water heater is adjusted through the heat load correction mode, so that the heating rate of the gas water heater can be adjusted and controlled. When the heating rate is lower, increasing the heat load so as to accelerate the heating rate; when the heating rate is higher, the heat load is reduced, so that the heating heat load is reduced in advance, the heating rate is reduced, and the temperature is prevented from being overhigh due to overshoot of the temperature rise. Therefore, temperature rise overshoot can be reduced while increasing the heating speed.
2. In the embodiment of the invention, when the current heating rate is smaller than the minimum value of the heating rate interval, the current heat load and the preset compensation amount of the gas water heater are obtained; when the current heating rate is greater than the maximum value of the heating rate interval, acquiring a preset overshoot control quantity, and when the current heating rate is less than the minimum value of the heating rate interval, compensating the current thermal load by using the compensation quantity, so as to accelerate the heating rate; and when the current temperature rise rate is larger than the maximum value of the temperature rise rate interval, increasing overshoot control quantity, reducing heating power, reducing heating heat load in advance and preventing the temperature rise overshoot value from being too high. Therefore, temperature rise overshoot can be reduced while the heating speed is increased.
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 diagram of a control method for a gas water heater of an embodiment of the present invention;
fig. 2 is an overall flowchart of a gas water heater according to an embodiment 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 is to be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
Example 1
As shown in fig. 1 and 2, the present invention provides a control method of a gas water heater, the control method comprising:
s1, acquiring the current heating rate of the gas water heater;
for the current heating rate, the current heating rate may be calculated by a temperature difference of a preset time period, so that the current heating rate of the gas water heater may be obtained. For example, it can be performed by: firstly acquiring the water inlet temperature of the hot gas water heater, then acquiring the water outlet temperature of the hot gas water heater after a preset time period, and then obtaining the current heating rate of the gas water heater according to the water inlet temperature, the water outlet temperature and the length of the time period.
S2, determining a heat load correction mode of the gas water heater according to the relation between the current heating rate and the heating rate interval;
and S3, adjusting the heat load of the gas water heater by using the heat load correction mode.
In steps S2 and S3, a specific heat load correction manner may be obtained according to a relationship between the current temperature increase rate and the temperature increase rate section. And then adjusting the heat load of the gas water heater in a heat load correction mode.
And when the current temperature rise rate is smaller than the temperature rise rate interval, the heat load correction mode is to provide a preset compensation amount. The current heat load of the gas water heater is obtained firstly, the corrected heat load is the sum of the current heat load and the compensation amount, and heating is started by the corrected heat load. Thereby increasing the heating power of the gas water heater. In order to shorten the heating time. And then acquiring a second threshold value of the outlet water temperature, wherein the second threshold value is related to the water temperature set by the user.
In the embodiment of the present invention, the second threshold may be less than the water temperature set by the user, for example, the second threshold may be 2 to 3 ℃ less than the water temperature set by the user. And then, in the heating process, judging whether the current outlet water temperature of the gas water heater reaches a second threshold value, and when the current outlet water temperature reaches the second threshold value, cancelling the compensation amount, namely controlling the gas water heater to heat by the heat load before correction. Specifically, the second threshold may be determined according to a preset target outlet water temperature and the first correction amount. The second threshold is a difference between a preset target outlet water temperature and a first correction amount, and the first correction amount can be 2-3 ℃.
Similarly, when the current temperature rise rate is greater than the temperature rise rate interval, the heat load correction mode is to provide a preset temperature rise overshoot, and the corrected heat load is the difference between the current heat load and the temperature rise overshoot. And then acquiring a second threshold value of the outlet water temperature, wherein the second threshold value is related to the water temperature set by the user.
In the embodiment of the present invention, the second threshold may be smaller than the water temperature set by the user, for example, the second threshold may be 4 to 5 ℃ smaller than the water temperature set by the user. And then, judging whether the current outlet water temperature of the gas water heater reaches a second threshold value or not in the heating process, and when the current outlet water temperature reaches the second threshold value, adjusting the current heat load by using the overshoot control quantity so as to properly reduce the heating power and prevent higher temperature rise overshoot when the heating process is finished. At this time, a second threshold may be determined according to a preset target outlet water temperature and a second correction amount, where the second threshold is a difference between the preset target outlet water temperature and the second correction amount, the second correction amount is greater than the first correction amount, and the second correction amount may be 4 to 5 ℃.
And when the current heating rate is within the heating rate interval, keeping the existing heating state of the gas water heater.
Further, before step S2, the following steps are also included:
s4, acquiring heating parameters of the gas water heater
The heating parameter can be the water inlet flow of the gas water heater, and can also be the preset heat load of the gas water heater. For obtaining the preset heat load of the gas water heater, specifically, in the embodiment of the present invention, the calculation principle of the preset heat load of the gas water heater is as follows: q Heating is carried out ＝k·C Water (I) ·(T Setting up -T Inflow water )·q Water flow Wherein Q is Heating is carried out For a predetermined thermal load, k is a correction factor, C Water (I) Is the specific heat capacity of water, T Setting up Setting the temperature of the gas water heater, wherein the set temperature is set on the gas water heater by a user; t is Inflow water Is the inlet water temperature of the gas water heater, q Water flow rate Is the water inlet flow of the gas water heater.
Therefore, the preset heat load of the gas water heater can be obtained according to the actual working condition of the gas water heater.
S5, determining the temperature rise rate interval according to the heating parameters;
specifically, in the present embodiment, the heating parameter is exemplified as the preset heat load of the gas water heater. This step may include:
s51, judging whether the preset heat load is larger than the heat load reference value or not;
first, a preset first threshold is obtained, and in the embodiment of the present invention, the first threshold is a thermal load reference value. The reference value of the thermal load is related to the specific model of the gas water heater. In the embodiment of the invention, the heat load benchmark value of the gas water heater can be 25KW.
And then judging whether the preset heat load is larger than the heat load reference value or not.
S52, if yes, taking the first interval as the temperature rise rate interval;
for example, in the embodiment of the invention, when a user needs to start the gas water heater by hot water, the water inlet temperature T can be detected Inflow water =20 ℃, set temperature T Setting up Inlet water flow q =45 ℃ Water flow =14 (kg/min), after the gas water heater is ignited successfully, the heating process is switched, and then the heat load Q is preset Heating is carried out ＝k·C Water (W) ·(T Setting up -T Inflow water )·q Water flow rate ＝1.1*4.2*25*14/60＝26.95KW。
Therefore, 26.95KW is larger than 25KW, and the temperature rising rate interval is the first interval.
And S53, if not, taking the second interval as the temperature rise rate interval.
For example, in the embodiment of the invention, when a user needs to start the gas water heater by hot water, the water inlet temperature T can be detected Inflow water =20 ℃, set temperature T Setting up =45 ℃ water inflow q Water flow rate =6 (kg/min), after the gas water heater is ignited successfully, the heating process is switched, and then the heat load Q is preset Heating of ＝k·C Water (W) ·(T Setting up -T Inflow water )·q Water flow rate ＝1.1*4.2*25*6/60＝11.55KW。
Therefore, 11.55KW is less than 25KW, and the temperature-rising speed interval is the second interval.
In the present embodiment, the minimum value K11 of the first interval =1.8 (° c/s), and the maximum value K21 of the first interval =2.2 (° c/s). The minimum value K12=2.0 (° c/s) in the second interval, and the maximum value K22=2.5 (° c/s) in the second interval. Where K11 and K12 may be referred to as Kmin in FIG. 2 and K21 and K22 may be referred to as Kmax in FIG. 2.
Wherein the minimum value of the first interval is K11, and the minimum value of the second interval is K12. The maximum value of the first interval is K21, and the maximum value of the second interval is K22. Associated with the reference numerals in figure 2. The first interval minimum value K11, the first interval maximum value K21, the second interval minimum value K12, and the second interval maximum value K22 are related to the model of the gas water heater. In this embodiment, the minimum value K11 of the first interval, the maximum value K21 of the first interval, the minimum value K12 of the second interval, and the maximum value K22 of the second interval may be obtained by matching with a model system of the gas water heater.
Of course, the present embodiment is only for illustration and not for limitation, and those skilled in the art can change the embodiments according to actual situations to obtain the same technical effects.
Specifically, in the embodiment of the present invention, when the temperature increase rate interval is the first interval, the specific conditions are as follows:
and when the current temperature rise rate is smaller than the first interval, namely smaller than the minimum value K11 of the first interval, the heat load correction mode is a heat load compensation quantity. Thermal load compensation quantity Δ Q1=0.1 · Q Heating is carried out Further, when the outlet water temperature collected at the 5 th second is 27 ℃, the temperature rise rate Kt = (27-20)/5 = (1.4) < K11, and heat load compensation is required, the heating power is increased, and Q starts to be set to Q Correction ＝Q Heating of Heating with +aq1 =1.1 × 26.95=29.65kw is performed in order to shorten the heating time.
And when the collected current effluent water temperature is 42 ℃, the compensation is quitted. In the embodiment of the present invention, the second threshold is a difference between a preset target outlet water temperature and a first correction amount a, and the first correction amount a may be 3 ℃. The preset target outlet water temperature is 45 ℃. And T is set as a preset target outlet water temperature. Therefore, when the collected current outlet water temperature 42 ℃ is more than or equal to T set-A, the compensation is quitted, and high temperature rise overshoot is prevented when the heating process is finished.
The technical scheme has the following comparison results with the prior art:
| test item | Prior Art | The technical scheme |
| Time of heating | 18.5s | 13.5s |
| Temperature rise overshoot | 0.8℃ | 0.8℃ |
When the current temperature rise rate is greater than the first interval, namely greater than the maximum value K21 of the first interval, the heat load correction mode is a temperature rise overshoot. Temperature rise overshoot Δ Q2=0.08 · Q Heating is carried out Further, if the effluent temperature collected at the 5 th second is 31 ℃, the heating rate Kt = (32-20)/5 =2.4 > K21, and the heating is continued.
Of course, when the collected current leaving water temperature is more than or equal to 40 ℃ and more than or equal to T set-B, the temperature rise overshoot control quantity is increased to be delta Q2, and Q is started Correction ＝Q Heating is carried out Heating with-delta q2=0.92 × 26.95=24.79KW, and reducing heating power to prevent heating process from endingA higher temperature overshoot occurs. Where B is the second correction amount, in this embodiment, B may be 5 ℃.
The technical scheme has the following comparison results with the prior art:
| test item | Prior Art | The technical scheme |
| Time of heating | 11.5s | 12s |
| Temperature rise overshoot | 2.0℃ | 1.0℃ |
And when the current temperature rise rate is in the first interval, if the effluent temperature acquired by the temperature probe at the 5 th second is 30 ℃, the temperature rise rate Kt = (30-20)/5 =2.0, and when K11 < Kt < K21 is met, the preset heating heat load Q is kept Heating of Heating was continued for =26.95 (kW). The working state of the gas water heater is as follows:
| test item | The technical scheme |
| Time of heating | 12.5s |
| Temperature rise overshoot | 0.5℃ |
Likewise, in the embodiment of the present invention, when the temperature increase rate interval is the second interval, the specific conditions are as follows:
and when the current temperature rise rate is smaller than the second interval, namely smaller than a low temperature rise rate threshold K12, the heat load correction mode is a heat load compensation amount. Thermal load compensation quantity Δ Q1=0.1 · Q Heating is carried out Further, if the effluent temperature collected at the 5 th second is 29 ℃, the temperature increase rate Kt = (29-20)/5 =1.8 < K12, and heat load compensation is required, and the heating power is increased to start using Q Correction ＝Q Heating is carried out Heating with +. DELTA.q 1=1.1 × 11.55=12.71KW to shorten the heating time.
And when the collected current outlet water temperature is 42 ℃, the compensation is quitted. In the embodiment of the present invention, the second threshold is a difference between a preset target outlet water temperature and a first correction amount a, and the first correction amount a may be 3 ℃. The temperature was set at 45 ℃. Therefore, when the collected current leaving water temperature 42 ℃ is more than or equal to T set-A, the compensation is quitted, and high temperature rising overshoot is prevented when the heating process is finished.
The technical scheme has the following comparison results with the prior art:
| test item | Prior Art | The technical scheme |
| Time of heating | 15.5s | 13.5s |
| Temperature rise overshoot | 0.8℃ | 0.8℃ |
And when the current temperature rise rate is greater than the second interval, namely greater than a high temperature rise rate threshold K22, the heat load correction mode is a temperature rise overshoot. Temperature rise overshoot Δ Q2=0.08 · Q Heating is carried out If the outlet water temperature collected in the 5 th second is 33 ℃, the heating rate Kt = (33-20)/5 = (2.6 > K22), and the heating is continued.
Of course, when the collected current outlet water temperature is 40 ℃ or more and T is set as-B, the temperature rise overshoot control amount is increased to be delta Q2, and the control amount begins to be Q Correction ＝Q Heating is carried out Heating is carried out at- Δ q2=0.92 × 11.55=10.63kw, the heating power is appropriately reduced, and high temperature rise overshoot at the end of the heating process is prevented. Where B is the second correction amount, in this embodiment, B may be 5 ℃.
The technical scheme has the following comparison results with the prior art:
according to the arrangement, the heating rate interval can be reasonably matched according to the size of the heat load required to be preset by the gas water heater, and the heating power of the gas water heater is adjusted in a heat load correction mode, so that the heating heat load and the heating speed of the gas water heater can be adjusted and controlled. When the heating rate is lower, the heating power is increased, so that the thermal load compensation is increased, and the heating speed is increased; when the temperature rising rate is higher, the heating power is reduced, so that the temperature rising overshoot is increased, the heating heat load is reduced in advance, and the temperature rising overshoot is prevented from causing the overhigh temperature. Therefore, temperature rise overshoot can be reduced while increasing the heating speed.
And when the current heating rate is in the second interval, if the effluent temperature acquired by the temperature probe at the 5 th second is 32 ℃, the heating rate Kt = (32-20)/5 =2.4, and if K12 < Kt < K22 is met, keeping the preset heating heat load Q Heating of Heating was continued =11.55 (kW). The working state of the gas water heater is as follows:
| test item | The technical scheme |
| Time of heating | 11s |
| Temperature rise overshoot | 0.5℃ |
Therefore, the embodiment of the invention can effectively shorten the heating time of the gas water heater, and simultaneously reduce the temperature rise overshoot of the gas water heater, so that the hot water performance of the gas water heater is obviously improved.
Example 2
According to a second aspect, an embodiment of the present invention further provides a control device for a gas water heater, the control device including:
the first acquisition module is used for acquiring the current heating rate of the gas water heater; for details, please refer to step S1 of the above embodiment, which is not described herein again.
The processing module is used for determining a heat load correction mode of the gas water heater according to the relation between the current heating rate and the heating rate interval; for details, please refer to step S2 of the above embodiment, which is not described herein again.
And the adjusting module is used for adjusting the heat load of the gas water heater by using the heat load correction mode. For details, please refer to step S3 of the above embodiment, which is not repeated herein.
The control device of the gas water heater further comprises a device for executing the steps of S4 obtaining heating parameters of the gas water heater, S5 determining the heating rate interval according to the heating parameters, S51 judging whether the preset heat load is larger than the heat load reference value, S52, if yes, taking the first interval as the heating rate interval, and if not, taking the second interval as the heating rate interval. For details, see the above steps S4, S5, S51, S52, and S53 of the embodiment, which are not described herein again.
According to the arrangement, the heating rate interval can be reasonably matched according to the size of the heat load required to be preset by the gas water heater, and the heating power of the gas water heater is adjusted in a heat load correction mode, so that the heating heat load and the heating speed of the gas water heater can be adjusted and controlled. When the heating rate is lower, the heating power is increased, so that the heat load compensation is increased, and the heating speed is increased; when the temperature rising rate is higher, the heating power is reduced, so that the temperature rising overshoot is increased, the heating heat load is reduced in advance, and the temperature rising overshoot is prevented from causing the overhigh temperature. Therefore, temperature rise overshoot can be reduced while the heating speed is increased.
Example 3
An embodiment of the present invention further provides an electronic device, which may include a processor and a memory, where the processor and the memory may be connected through a bus or in another manner, for example, by bus connection.
The processor may be a Central Processing Unit (CPU). The Processor may also be other general purpose processors, digital Signal Processors (DSPs), application Specific Integrated Circuits (ASICs), field Programmable Gate Arrays (FPGAs) or other Programmable logic devices, discrete Gate or transistor logic devices, discrete hardware components, or a combination thereof.
The memory, which is a non-transitory computer-readable storage medium, may be used to store non-transitory software programs, non-transitory computer-executable programs, and modules, such as program instructions/modules corresponding to the control methods in the embodiments of the present invention. The processor executes various functional applications and data processing of the processor by executing non-transitory software programs, instructions and modules stored in the memory, that is, the control method in the above method embodiment is realized.
The memory may include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required for at least one function; the storage data area may store data created by the processor, and the like. Further, the memory may include high speed random access memory, and may also include non-transitory memory, such as at least one disk storage device, flash memory device, or other non-transitory solid state storage device. In some embodiments, the memory optionally includes memory located remotely from the processor, and such remote memory may be coupled to the processor via a network. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.
The one or more modules are stored in the memory and, when executed by the processor, perform any of the control methods of the above embodiments.
The specific details of the electronic device may be understood by referring to the corresponding related description and effects in any of the embodiments, which are not described herein again.
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 configured 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 Drive (Hard Disk Drive, abbreviated as HDD), or a Solid State Drive (SSD); the storage medium may also comprise a combination of memories of the kind described above.
Although the embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the invention, and such modifications and variations fall within the scope defined by the appended claims.
Claims (7)
1. A method of controlling a gas water heater, comprising:
acquiring the current heating rate of the gas water heater;
determining a heat load correction mode of the gas water heater according to the relation between the current heating rate and the heating rate interval;
adjusting the heat load of the gas water heater by using the heat load correction mode;
determining a heat load correction mode of the gas water heater according to the relation between the current heating rate and a preset heating rate interval, wherein the heat load correction mode comprises the following steps:
when the current heating rate is smaller than the minimum value of the heating rate interval, the heat load correction mode is to provide a preset compensation amount;
when the current temperature rise rate is larger than the maximum value of the temperature rise rate interval, the heat load correction mode is to provide a preset overshoot control quantity;
adjusting the heat load of the gas water heater by using the heat load correction mode, comprising the following steps:
when the heat load correction mode is to provide a preset compensation amount, acquiring the current heat load and the compensation amount of the gas water heater, and compensating the current heat load by using the compensation amount; acquiring a second threshold, and canceling the compensation quantity when the outlet water temperature reaches the second threshold;
when the heat load correction mode is that a preset overshoot control quantity is provided, the current heat load and the overshoot control quantity of the gas water heater are obtained, and the current heat load is controlled by utilizing the overshoot control quantity; when the outlet water temperature reaches a second threshold value, acquiring the current heat load of the gas water heater, and adjusting the current heat load by using the overshoot control quantity; the obtaining of the second threshold includes:
when the current heating rate is smaller than the minimum value of the heating rate interval, determining a second threshold according to a preset target water outlet temperature and a first correction quantity;
when the current temperature rising rate is larger than the maximum value of the temperature rising rate interval, determining a second threshold according to a preset target outlet water temperature and a second correction quantity, wherein the second correction quantity is larger than the first correction quantity.
2. The method of claim 1, further comprising:
and when the current heating rate is within the heating rate interval, keeping the heating state of the gas water heater.
3. The method according to any one of claims 1 to 2, further comprising, prior to the step of determining the relationship between the current ramp rate and a preset ramp rate interval:
acquiring heating parameters of the gas water heater;
and determining the temperature rise rate interval according to the heating parameters.
4. The method of claim 3, wherein determining the ramp rate interval as a function of the heating parameter comprises:
judging whether the heating parameter is larger than a preset first threshold value or not;
if so, taking the first interval as the temperature rise rate interval;
and if not, taking the second interval as the temperature rise rate interval.
5. A control device for a gas water heater, comprising:
the first acquisition module is used for acquiring the current heating rate of the gas water heater;
the processing module is used for determining a heat load correction mode of the gas water heater according to the relation between the current heating rate and the heating rate interval;
the adjusting module is used for adjusting the heat load of the gas water heater by using the heat load correction mode;
determining a heat load correction mode of the gas water heater according to the relation between the current heating rate and a preset heating rate interval, wherein the heat load correction mode comprises the following steps:
when the current heating rate is smaller than the minimum value of the heating rate interval, the heat load correction mode is to provide a preset compensation amount;
when the current temperature rise rate is larger than the maximum value of the temperature rise rate interval, the heat load correction mode is to provide a preset overshoot control quantity;
adjusting the heat load of the gas water heater by using the heat load correction mode, comprising the following steps:
when the heat load correction mode is to provide a preset compensation amount, acquiring the current heat load and the compensation amount of the gas water heater, and compensating the current heat load by using the compensation amount; acquiring a second threshold, and canceling the compensation quantity when the outlet water temperature reaches the second threshold;
when the heat load correction mode is that a preset overshoot control quantity is provided, the current heat load and the overshoot control quantity of the gas water heater are obtained, and the current heat load is controlled by utilizing the overshoot control quantity; when the outlet water temperature reaches a second threshold value, acquiring the current heat load of the gas water heater, and adjusting the current heat load by using the overshoot control quantity; the obtaining of the second threshold includes:
when the current heating rate is smaller than the minimum value of the heating rate interval, determining a second threshold according to a preset target water outlet temperature and a first correction quantity;
when the current heating rate is larger than the maximum value of the heating rate interval, determining a second threshold according to a preset target outlet water temperature and a second correction quantity, wherein the second correction quantity is larger than the first correction quantity.
6. 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 according to any one of claims 1 to 4.
7. 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 4.
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| CN115095986B (en) * | 2022-06-30 | 2023-03-14 | 九阳股份有限公司 | Control method of instant heating water outlet machine |
| CN115264960A (en) * | 2022-07-19 | 2022-11-01 | 珠海格力电器股份有限公司 | Ignition control method and device for gas water heater, electronic equipment and gas water heater |
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| US9995493B2 (en) * | 2010-04-14 | 2018-06-12 | Robert J. Mowris | Efficient fan controller |
| CN110398066A (en) * | 2019-07-05 | 2019-11-01 | 芜湖美的厨卫电器制造有限公司 | Water heater and its control method and computer readable storage medium |
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