CN115700342A - Control method and control equipment of gas water heater - Google Patents
Control method and control equipment of gas water heater Download PDFInfo
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- CN115700342A CN115700342A CN202110828916.6A CN202110828916A CN115700342A CN 115700342 A CN115700342 A CN 115700342A CN 202110828916 A CN202110828916 A CN 202110828916A CN 115700342 A CN115700342 A CN 115700342A
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Abstract
The invention provides a control method and control equipment of a gas water heater, wherein the gas water heater comprises a heat exchanger cold water pipeline and a water mixing device, the water mixing device comprises a cold water inlet and a hot water inlet, the hot water inlet and the cold water inlet are respectively communicated with a water outlet of the heat exchanger and a water outlet of the cold water pipeline, and the method comprises the following steps: the method comprises the steps of obtaining the water inlet temperature of a hot water inlet of a water mixing device, judging whether the water inlet temperature of the hot water inlet exceeds a set temperature, calculating the water inlet amount of a cold water inlet according to the water inlet temperature of the hot water inlet when the water inlet temperature of the hot water inlet exceeds the set temperature, and reducing the water outlet temperature of the water mixing device, so that the phenomenon that a user is scalded due to overheating of water outlet of a gas water heater can be avoided.
Description
Technical Field
The invention relates to the technical field of household appliances, in particular to a control method and control equipment of a gas water heater.
Background
The gas water heater is a common household appliance in people's homes at present, and generally comprises a water inlet pipe, a water outlet pipe, a burner, a heat exchanger and other parts, wherein the water inlet pipe and the water outlet pipe are respectively connected with the heat exchanger, and cold water flowing into the heat exchanger through the water inlet pipe is heated into hot water and then flows out through the water outlet pipe.
In practical application, after the gas water heater boils water for the second time, because more hot water is stored in the heat exchanger, after the residual hot water is heated for the second time, the water temperature is greatly improved, a user is easily scalded, and the water temperature fluctuation is large, so that the experience of the user can be influenced.
Disclosure of Invention
One object of the present invention is to provide a control method for a gas water heater that avoids overheating of the outlet water temperature.
It is a further object of the present invention to reduce fluctuations in water temperature of a gas water heater.
It is another further object of the present invention to provide a control apparatus for a gas water heater.
According to one aspect of the present invention, there is provided a control method for a gas water heater, the gas water heater including a heat exchanger, a cold water pipeline and a water mixing device, the water mixing device including a cold water inlet and a hot water inlet, the hot water inlet and the cold water inlet being respectively communicated with a water outlet of the heat exchanger and a water outlet of the cold water pipeline, the control method including:
acquiring the water inlet temperature of the hot water inlet;
judging whether the water inlet temperature of the hot water inlet exceeds a set temperature or not;
if so, calculating the water inflow of the cold water inlet according to the water inflow temperature of the hot water inlet so as to reduce the water outlet temperature of the water mixing device.
Optionally, the cold water pipeline includes a water inlet and a first water outlet and a second water outlet that are communicated with the water inlet, the first water outlet and the second water outlet are respectively communicated with the cold water inlet and the water inlet of the heat exchanger, a shunt valve is disposed on the cold water pipeline, the shunt valve is configured to control water flow of the first water outlet, an opening value of the shunt valve represents a ratio of water flow of the first water outlet to total water flow of the cold water pipeline, and the step of calculating a water inflow of the cold water inlet according to a water inflow temperature of the hot water inlet includes:
and calculating the opening value of the shunt valve according to the water inlet temperature of the hot water inlet and performing corresponding control on the shunt valve.
Optionally, the step of calculating an opening value of the shunt valve according to the temperature of the inlet water of the hot water inlet and performing corresponding control on the shunt valve includes:
judging whether the water inlet temperature of the hot water inlet is higher than the set temperature and lower than a preset temperature or not;
if the water inlet temperature of the hot water inlet is higher than the set temperature and lower than the preset temperature, calculating the opening value of the water dividing valve according to the following formula (1) and performing corresponding control on the water dividing valve;
wherein OP is the opening value of the shunt valve, T1 is the water inlet temperature of the hot water inlet, TS is the set temperature, and T0 is the water inlet temperature of the cold water inlet.
Optionally, after the step of determining whether the water inlet temperature of the hot water inlet is greater than the set temperature and less than a preset temperature, the method further includes:
if the water inlet temperature of the hot water inlet is greater than or equal to the preset temperature and is maintained for a preset time, acquiring the water outlet temperature of the water mixing device, and judging whether the temperature difference between the water outlet temperature of the water mixing device and the set temperature exceeds a preset temperature difference threshold value or not;
if the temperature difference between the water outlet temperature of the water mixing device and the set temperature exceeds a preset temperature difference threshold value, calculating the opening value of the water dividing valve according to the following formula (2) and correspondingly controlling the water dividing valve until the temperature difference between the water outlet temperature of the water mixing device and the set temperature is smaller than the preset temperature difference threshold value;
wherein Q2 is the current water inflow of the cold water inlet, Q1 is the current total water flow of the cold water pipeline, and A is the latest opening value of the shunt valve.
Optionally, the step of obtaining the outlet water temperature of the water mixing device includes: the method comprises the steps of obtaining the water outlet temperature of the water mixing device detected by a first temperature detection device arranged at the water outlet of the water mixing device.
Optionally, water flow detection devices are disposed at the inlet of the cold water pipeline and the cold water inlet of the water mixing device, so as to detect the total water flow of the cold water pipeline and the water flow of the cold water inlet.
Optionally, the water outlet of the cold water valve is communicated with the water outlet pipeline.
Optionally, the step of obtaining the temperature of the inlet water of the hot water inlet includes: and acquiring the water inlet temperature of the hot water inlet, which is detected by a second temperature detection device arranged at the hot water inlet.
Optionally, the mixing device is a thermostatic mixing valve.
According to another aspect of the present invention, there is also provided a control apparatus of a gas water heater, comprising a memory in which a computer program is stored and a processor configured to execute the computer program to perform the control method of the gas water heater as described in any one of the above.
According to the invention, after the water inlet temperature of the hot water inlet of the water mixing device is obtained, whether the water inlet temperature of the hot water inlet exceeds the set temperature is judged, and if the water inlet temperature of the hot water inlet exceeds the set temperature, the water inlet amount of the cold water inlet is calculated according to the water inlet temperature of the hot water inlet, so that the water outlet temperature of the water mixing device is reduced, and the phenomenon that a user is scalded due to overheating of the water outlet of the gas water heater can be avoided.
Further, based on the scheme provided by the invention, after the gas water heater boils water for the second time, a user feels that the water temperature rises steadily, the process that the water temperature rises from high to low does not occur, the fluctuation of the water temperature is reduced, and the user experience is improved.
The foregoing description is only an overview of the technical solutions of the present invention, and the embodiments of the present invention are described below in order to make the technical means of the present invention more clearly understood and to make the above and other objects, features, and advantages of the present invention more clearly understandable.
The above and other objects, advantages and features of the present invention will become more apparent to those skilled in the art from the following detailed description of specific embodiments thereof, taken in conjunction with the accompanying drawings.
Drawings
Some specific embodiments of the invention will be described in detail hereinafter, by way of illustration and not limitation, with reference to the accompanying drawings. The same reference numbers in the drawings identify the same or similar elements or components. Those skilled in the art will appreciate that the drawings are not necessarily drawn to scale. In the drawings:
FIG. 1 is a schematic block diagram of a gas water heater according to one embodiment of the present invention;
fig. 2 is a schematic block diagram of a control apparatus of a gas water heater according to an embodiment of the present invention;
fig. 3 is a flow chart illustrating a control method of a gas water heater according to an embodiment of the present invention.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
It should be noted that the technical features of the embodiments and alternative embodiments of the present invention may be combined with each other without conflict.
FIG. 1 is a schematic block diagram of a gas water heater according to one embodiment of the present invention; fig. 2 is a schematic configuration block diagram of a control apparatus of a gas water heater according to an embodiment of the present invention. Referring to fig. 1 and 2, the gas water heater 100 may include at least a heat exchanger 110, a cold water pipeline 120 and a water mixing device 130, where the water mixing device 130 may be a thermostatic water mixing valve, where the water mixing device 130 includes a hot water inlet 131, a cold water inlet 132 and a water outlet 133 that are communicated with each other, the hot water inlet 131 and the cold water inlet 132 are respectively communicated with the water outlet 111 of the heat exchanger 110 and the water outlet of the cold water pipeline 120, the water outlet 133 of the water mixing device 130 is communicated with the water outlet pipeline 190, and water in the heat exchanger 110 is heated into hot water and then flows to the hot water inlet 131 and enters the water mixing device 130 to be mixed with cold water flowing to the water mixing device 130 through the cold water inlet 132. The control device 200 of the gas water heater comprises a memory 220 and a processor 210, wherein the memory 220 stores a computer program, and the processor 210 is configured to run the computer program 221 to execute a control method of the gas water heater in any one of the following embodiments.
Referring to fig. 1, in some embodiments of the present invention, the cold water pipeline 120 includes a water inlet 121 and a first water outlet 122 and a second water outlet 123 communicated with the water inlet 121, the first water outlet 122 and the second water outlet 123 of the cold water pipeline 120 are respectively communicated with a cold water inlet 132 of the water mixing device 130 and a water inlet 112 of the heat exchanger 110, a water diversion valve 140 is further disposed on the cold water pipeline 120, the water diversion valve 140 is configured to control a water flow rate of the first water outlet 122, an opening degree of the water diversion valve 140 represents a ratio of the water flow rate of the first water outlet 122 to a total water flow rate of the cold water pipeline 120, and the larger the opening degree of the water diversion valve 140 is, the larger the water flow rate of the first water outlet 122 is, i.e., the larger the water inflow rate of the cold water inlet 132 of the water mixing device 130 is.
In addition, the control device 200 may be in data connection with the gas water heater 100, and may be disposed at a network-side device such as a server, a cloud, and the like; the control device 200 may also be a centralized control device, disposed in the environment or surroundings in which the gas water heater 100 is located. The data connection mode of the control device 200 and the gas water heater 100 includes but is not limited to wireless transmission, infrared transmission, ultrasonic transmission, etc.; the control device 200 may also be provided inside the gas water heater 100 as part of the gas water heater 100.
Fig. 3 is a flow chart illustrating a control method of a gas water heater according to an embodiment of the present invention. Referring to fig. 3, the control method of the gas water heater 100 performed by the control device 200 of any of the above embodiments of the present invention may include at least the following steps S302-S306.
Step S302: acquiring the water inlet temperature of the hot water inlet 131;
step S302: judging whether the inlet water temperature of the hot water inlet 131 exceeds a set temperature;
step S302: if so, the water inlet amount of the cold water inlet 132 is calculated according to the water inlet temperature of the hot water inlet 131 to lower the water outlet temperature of the water mixing device 130.
In the embodiment of the invention, after the water inlet temperature of the hot water inlet 131 of the water mixing device 130 is obtained, whether the water inlet temperature of the hot water inlet 131 exceeds the set temperature is judged, and if the water inlet temperature of the hot water inlet 131 exceeds the set temperature, the water inlet amount of the cold water inlet 132 is calculated according to the water inlet temperature of the hot water inlet 131 so as to reduce the water outlet temperature of the water mixing device 130, so that the phenomenon that a user is scalded due to the overheat of the water outlet of the gas water heater 100 can be avoided.
The obtaining of the inlet water temperature of the hot water inlet 131 in step S302 may include: the temperature of the hot water inlet 131 detected by the second temperature detecting means 160 provided at the hot water inlet 131 is acquired. The second temperature detecting device 160 includes, but is not limited to, a thermometer and a temperature sensor.
The second temperature detection device 160 may be disposed at the water outlet 111 of the heat exchanger 110, but the present invention is not limited thereto.
In some embodiments of the present invention, the calculating of the water inflow of the cold water inlet 132 according to the inlet water temperature of the hot water inlet 131 mentioned in the above step S302 may include: the opening degree value of the water dividing valve 140 is calculated according to the temperature of the inlet water of the hot water inlet 131 and corresponding control is performed on the water dividing valve 140.
Since the shunt valve 140 is disposed on the cold water line 120 and the shunt valve 140 is configured to control the water flow of the first water outlet 122, the opening value of the shunt valve 140 represents a ratio of the water flow of the first water outlet 122 to the total water flow of the cold water line 120. Therefore, the opening degree of the water dividing valve 140 can be calculated according to the inlet water temperature of the hot water inlet 131, and the water dividing valve 140 can be controlled accordingly, so as to reduce the outlet water temperature of the water mixing device 130.
Specifically, in some embodiments of the present invention, the calculating the opening degree of the water distribution valve 140 according to the inlet water temperature of the hot water inlet 131 in step S306 may include: judging whether the water inlet temperature of the hot water inlet 131 is higher than a set temperature and lower than a preset temperature; if the inlet water temperature of the hot water inlet 131 is higher than the set temperature and lower than the preset temperature, the opening degree of the shunt valve 140 is calculated according to the following formula (1) and the shunt valve 140 is controlled accordingly.
Wherein, OP is the opening value of the shunt valve 140, T1 is the water inlet temperature of the hot water inlet 131, TS is the set temperature, and T0 is the water inlet temperature of the cold water inlet 132.
Here, the inlet water temperature T0 of the cold water inlet 132 may be obtained by a third temperature detection device 180 disposed on the cold water inlet 132 or the cold water pipeline 120.
The opening OP of the water diversion valve 140 represents a ratio of the water flow rate of the first water outlet 122 of the cold water pipeline 120 to the total water flow rate of the cold water pipeline 120, and the water diversion valve 140 is in a closed state when the inlet water temperature of the hot water inlet 131 is lower than a set temperature, that is, no water flow passes through the first water outlet 122. When the water inlet temperature of the hot water inlet 131 is higher than the set temperature and lower than the preset temperature, the opening degree of the water diversion valve 140 is calculated according to the formula (1), wherein the set temperature TS and the water inlet temperature T0 of the cold water inlet 132 are set values, the larger the water inlet temperature T1 of the hot water inlet 131 is, the larger the opening degree OP of the water diversion valve 140 is, the larger the water flow rate of the first water outlet 122 of the cold water pipeline 120, i.e., the water inlet rate of the cold water inlet 132 of the water mixing device 130 is, so that the water outlet temperature of the water mixing device 130 can be reduced, the water outlet temperature of the gas water heater 100 approaches the set temperature, and the user can be prevented from being scalded due to the overhigh water outlet temperature of the gas water heater 100.
In some embodiments of the present invention, after determining whether the water inlet temperature of the hot water inlet 131 is greater than the set temperature and less than the preset temperature, the method further includes: if the inlet water temperature of the hot water inlet 131 is greater than or equal to the preset temperature and is maintained for the preset duration, the outlet water temperature of the water mixing device 130 is obtained, whether the temperature difference between the outlet water temperature of the water mixing device 130 and the set temperature exceeds a preset temperature difference threshold value is judged, and if the temperature difference between the outlet water temperature of the water mixing device 130 and the set temperature exceeds the preset temperature difference threshold value, the opening degree value of the water dividing valve 140 is calculated according to the following formula (2) and corresponding control is performed on the water dividing valve 140 until the temperature difference between the outlet water temperature of the water mixing device 130 and the set temperature is smaller than the preset temperature difference threshold value.
Where Q2 is the current water inlet of the cold water inlet 132, Q1 is the current total water flow of the cold water line 120, and a is the last shunt valve 140 opening value.
The temperature of the outlet water of the water mixing device 130 can be obtained, and specifically, the first temperature detecting device 150 disposed at the water outlet 133 of the water mixing device 130 can detect the temperature of the outlet water of the water mixing device 130.
The inlets of the cold water pipes 120 and the cold water inlet 132 of the water mixing device 130 are respectively provided with a water flow rate detection device 170 to detect the total water flow rate Q1 of the cold water pipes and the water flow rate Q2 of the cold water inlet 132.
The gas water heater 100 may have a problem of unstable combustion, and therefore, in this embodiment, the outlet water temperature of the water mixing device 130 is obtained after the inlet water temperature of the hot water inlet 131 is greater than or equal to the preset temperature and is maintained for the preset time, so that the accuracy of the obtained outlet water temperature of the water mixing device 130 can be ensured.
The preset temperature may be set according to actual needs, for example, 5S, 10S, and the like, and the present invention is not limited thereto.
In addition, the preset temperature is a temperature set by a main control system of the gas water heater 100, the preset temperature is unrelated to the set temperature, after the main control system of the gas water heater 100 detects that the water flow of the heat exchanger 110 reaches a specific value, the whole combustion system of the gas water heater 100 is controlled to start working, and a fan and a gas proportional valve of the gas water heater 100 are controlled to enable the outlet water temperature T1 of the heat exchanger 110 to reach the preset temperature and to be kept according to the outlet water temperature of the heat exchanger 110, namely the inlet water temperature T1 of the hot water inlet 131, the total water flow Q1 and the inlet water temperature, namely the inlet water temperature T0 of the cold water inlet 132.
In this embodiment, if the inlet water temperature of the hot water inlet 131 is greater than or equal to the preset temperature and is maintained for the preset time, if it is determined that the temperature difference between the outlet water temperature of the water mixing device 130 and the set temperature exceeds the preset temperature difference threshold, the opening degree of the water dividing valve 140 is finely adjusted by the above formula (2) until the temperature difference between the outlet water temperature of the water mixing device 130 and the set temperature is smaller than the preset temperature difference threshold, so that the outlet water temperature of the water mixing device 130 approaches the set temperature infinitely and is stable, and the user experience is further improved.
The invention provides a control method and control equipment of a gas water heater, wherein the gas water heater 100 comprises a heat exchanger 110, a cold water pipeline 120 and a water mixing device 130, the water mixing device 130 comprises a cold water inlet 132 and a hot water inlet 131, the hot water inlet 131 and the cold water inlet 132 are respectively communicated with a water outlet 111 of the heat exchanger 110 and a water outlet of the cold water pipeline 120, and the method comprises the following steps: after the water inlet temperature of the hot water inlet 131 of the water mixing device 130 is obtained, whether the water inlet temperature of the hot water inlet 131 exceeds the set temperature is judged, and if the water inlet temperature of the hot water inlet 131 exceeds the set temperature, the water inlet amount of the cold water inlet 132 is calculated according to the water inlet temperature of the hot water inlet 131 so as to reduce the water outlet temperature of the water mixing device 130, so that the situation that a user is scalded due to overheating of the water outlet of the gas water heater 100 can be avoided.
Further, based on the scheme provided by the invention, after the gas water heater 100 boils water for the second time, the user feels that the water temperature rises steadily, the process that the water temperature changes from high to low and then changes to high can not occur, the fluctuation of the water temperature is reduced, and the user experience is improved.
It is clear to those skilled in the art that the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and for the sake of brevity, further description is omitted here.
In addition, the functional units in the embodiments of the present invention may be physically independent of each other, two or more functional units may be integrated together, or all the functional units may be integrated in one processing unit. The integrated functional unit may be implemented in the form of hardware, or may also be implemented in the form of software or firmware.
Those of ordinary skill in the art will understand that: the integrated functional units, if implemented in software and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computing device (e.g., a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention when the instructions are executed. And the aforementioned storage medium includes: various media capable of storing program codes, such as a U disk, a removable hard disk, a Read Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.
Alternatively, all or part of the steps of implementing the foregoing method embodiments may be implemented by hardware (such as a computing device, e.g., a personal computer, a server, or a network device) associated with program instructions, which may be stored in a computer-readable storage medium, and when the program instructions are executed by a processor of the computing device, the computing device executes all or part of the steps of the method according to the embodiments of the present invention.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments can be modified or some or all of the technical features can be replaced with equivalents within the spirit and principle of the present invention; such modifications or substitutions do not depart from the scope of the present invention.
Claims (10)
1. A control method of a gas water heater, the gas water heater comprising a heat exchanger, a cold water pipeline and a water mixing device, the water mixing device comprising a cold water inlet and a hot water inlet, the hot water inlet and the cold water inlet being respectively communicated with a water outlet of the heat exchanger and a water outlet of the cold water pipeline, the control method comprising:
acquiring the water inlet temperature of the hot water inlet;
judging whether the water inlet temperature of the hot water inlet exceeds a set temperature or not;
if so, calculating the water inflow of the cold water inlet according to the water inflow temperature of the hot water inlet so as to reduce the water outlet temperature of the water mixing device.
2. The control method of a gas water heater according to claim 1, wherein the cold water pipeline includes a water inlet and a first water outlet and a second water outlet which are communicated with the water inlet, the first water outlet and the second water outlet are respectively communicated with the cold water inlet and the water inlet of the heat exchanger, a water diversion valve is arranged on the cold water pipeline, the water diversion valve is configured to control water flow of the first water outlet, an opening value of the water diversion valve represents a ratio of the water flow of the first water outlet to total water flow of the cold water pipeline, and the step of calculating the water inflow of the cold water inlet according to the water inflow temperature of the hot water inlet includes:
and calculating the opening value of the shunt valve according to the water inlet temperature of the hot water inlet and performing corresponding control on the shunt valve.
3. The control method of the gas water heater according to claim 2, wherein the step of calculating the opening value of the shunt valve according to the temperature of the inlet water of the hot water inlet and performing corresponding control on the shunt valve comprises:
judging whether the water inlet temperature of the hot water inlet is higher than the set temperature and lower than the preset temperature or not;
if the water inlet temperature of the hot water inlet is higher than the set temperature and lower than the preset temperature, calculating the opening value of the shunt valve according to the following formula (1) and performing corresponding control on the shunt valve;
wherein OP is the opening value of the shunt valve, T1 is the water inlet temperature of the hot water inlet, TS is the set temperature, and T0 is the water inlet temperature of the cold water inlet.
4. The control method of the gas water heater according to claim 3, wherein after the step of determining whether the water inlet temperature of the hot water inlet is greater than the set temperature and less than a preset temperature, the method further comprises:
if the water inlet temperature of the hot water inlet is greater than or equal to the preset temperature and is maintained for a preset time, acquiring the water outlet temperature of the water mixing device, and judging whether the temperature difference between the water outlet temperature of the water mixing device and the set temperature exceeds a preset temperature difference threshold value or not;
if the temperature difference between the water outlet temperature of the water mixing device and the set temperature exceeds a preset temperature difference threshold value, calculating the opening value of the water dividing valve according to the following formula (2) and correspondingly controlling the water dividing valve until the temperature difference between the water outlet temperature of the water mixing device and the set temperature is smaller than the preset temperature difference threshold value;
wherein Q2 is the current water inflow of the cold water inlet, Q1 is the current total water flow of the cold water pipeline, and A is the latest opening value of the shunt valve.
5. The control method of the gas water heater according to claim 4, wherein the step of obtaining the outlet water temperature of the water mixing device comprises: the method comprises the steps of obtaining the water outlet temperature of the water mixing device detected by a first temperature detection device arranged at the water outlet of the water mixing device.
6. The control method of the gas water heater according to claim 4, wherein a water flow detection device is arranged at each of the inlet of the cold water pipeline and the cold water inlet of the water mixing device so as to detect the total water flow of the cold water pipeline and the water flow of the cold water inlet.
7. The control method of the gas water heater according to claim 1, wherein an outlet of the cold water valve is communicated with a water outlet pipeline.
8. The control method of the gas water heater according to claim 1, wherein the step of obtaining the temperature of the inlet water of the hot water inlet includes: and acquiring the inlet water temperature of the hot water inlet detected by a second temperature detection device arranged at the hot water inlet.
9. The control method of the gas water heater according to claim 1, wherein the water mixing device is a thermostatic water mixing valve.
10. A control apparatus of a gas water heater, characterized by comprising a memory in which a computer program is stored and a processor configured to execute the computer program to perform the control method of the gas water heater according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202110828916.6A CN115700342A (en) | 2021-07-22 | 2021-07-22 | Control method and control equipment of gas water heater |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110828916.6A CN115700342A (en) | 2021-07-22 | 2021-07-22 | Control method and control equipment of gas water heater |
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| CN115700342A true CN115700342A (en) | 2023-02-07 |
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| CN202110828916.6A Pending CN115700342A (en) | 2021-07-22 | 2021-07-22 | Control method and control equipment of gas water heater |
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| CN (1) | CN115700342A (en) |
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