CN114754496B - Control method of gas water heater, gas water heater and readable storage medium - Google Patents

Control method of gas water heater, gas water heater and readable storage medium Download PDF

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Publication number
CN114754496B
CN114754496B CN202011602639.9A CN202011602639A CN114754496B CN 114754496 B CN114754496 B CN 114754496B CN 202011602639 A CN202011602639 A CN 202011602639A CN 114754496 B CN114754496 B CN 114754496B
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carbon dioxide
concentration
fan
value
output value
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CN114754496A (en
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薛承志
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Midea Group Co Ltd
Wuhu Midea Kitchen and Bath Appliances Manufacturing Co Ltd
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Midea Group Co Ltd
Wuhu Midea Kitchen and Bath Appliances Manufacturing Co Ltd
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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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
    • F24H1/10—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium
    • F24H1/107—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium using fluid fuel

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Regulation And Control Of Combustion (AREA)

Abstract

The invention provides a control method of a gas water heater, the gas water heater and a readable storage medium. The control method of the gas water heater comprises the steps of: controlling the operation of a combustor and a fan, and determining the concentration parameter value of carbon dioxide; and adjusting the output value of the running fan according to the concentration parameter value of the carbon dioxide. According to the invention, the output value of the fan is regulated according to the concentration of carbon dioxide generated by the burner, so that the combustion operation of the gas water heater can be carried out under good conditions in the working process, the phenomenon of insufficient combustion of the gas water heater is avoided, the working stability of gas equipment is ensured, and the use safety of users is improved.

Description

Control method of gas water heater, gas water heater and readable storage medium
Technical Field
The invention belongs to the technical field of water heaters, and particularly relates to a control method of a gas water heater, the gas water heater and a readable storage medium.
Background
In the related art, most gas water heaters are internally provided with a blower which supplements air to the gas water heater so as to maintain the gas water heater in a combustion operation under a good condition. Because of the difference of installation environments, the air blower cannot meet the combustion requirement of the gas water heater when blowing according to the preset air quantity.
Disclosure of Invention
The present invention aims to solve one of the technical problems existing in the prior art or related technologies.
To this end, a first aspect of the present invention proposes a control method of a gas water heater.
A second aspect of the present invention proposes a gas water heater.
A third aspect of the present invention proposes a readable storage medium.
In view of this, according to a first aspect of the present invention, there is provided a control method of a gas water heater including a burner, a fan for supplying air to the burner, and a carbon dioxide concentration obtaining device, the control method including: controlling the operation of a combustor and a fan, and determining the concentration parameter value of carbon dioxide; and adjusting the output value of the running fan according to the concentration parameter value of the carbon dioxide.
The invention provides a control method for controlling a gas water heater, which comprises a shell, wherein a smoke discharging channel, a heat exchanger, a combustion chamber, a burner arranged in the combustion chamber, a carbon dioxide concentration obtaining device, a gas pipeline connected with the burner, and a gas valve and a fan are arranged on the gas pipeline. The heat exchanger comprises a cold water inlet and a hot water outlet, cold water flows into the heat exchanger from the cold water inlet, the burner combusts and outputs heat to heat the cold water flowing into the heat exchanger to form hot water, and the hot water flows out of the heat exchanger through the hot water outlet of the heat exchanger. The fan is arranged below the shell, and the fan is electrified to blow air into the combustion chamber, so that oxygen can be supplied to the combustor during working, and the combustion efficiency of the combustor is improved. The carbon dioxide concentration acquisition device is arranged at a position between the burner and the smoke exhaust channel, and can detect the carbon dioxide concentration in the exhaust gas generated after combustion. The gas valve is a gas proportional valve, and the gas proportional valve can adjust the gas quantity and the ratio of gas to oxygen output by the burner.
The control method comprises the following steps: and receiving a start control instruction, controlling the burner to run at the initial set power, controlling the fan to start running at the initial set output value, setting the output end of the fan close to the burner, and outputting air to the burner by the fan to play a role in supplying oxygen to the combustion of the burner. The method comprises the steps of acquiring a carbon dioxide concentration value of waste gas generated by a burner through a carbon dioxide concentration acquisition device, determining a concentration parameter value of carbon dioxide according to the acquired carbon dioxide concentration value, and judging whether the oxygen supply to the burner is needed to be increased or not through the concentration parameter value of the carbon dioxide, namely, whether the output value of the fan operation is needed to be adjusted or not. And when the oxygen supply to the burner is judged to be needed, controlling the fan to increase the output value, and if the oxygen supply to the burner is judged not to be needed, controlling the fan to continue to operate at the current output value. The output value of the fan is adjusted according to the concentration of carbon dioxide generated by the burner, so that the combustion operation of the gas water heater can be carried out under good conditions in the working process, the phenomenon of insufficient combustion of the gas water heater is avoided, the working stability of gas equipment is ensured, and the use safety of a user is improved. The problems of incomplete combustion, vibration combustion and the like of the burner in the gas water heater are fundamentally avoided.
In addition, according to the control method of the gas water heater in the technical scheme provided by the invention, the control method also has the following additional technical characteristics:
in one possible design, the step of controlling the operation of the blower according to the concentration parameter value of the carbon dioxide specifically includes: controlling the burner and the fan to stop running and/or outputting prompt information based on the concentration parameter value of the carbon dioxide being larger than the first set parameter value; controlling the fan to continue to operate at the current fan output value based on the concentration parameter value of the carbon dioxide being smaller than the second set parameter value; and determining a set output value of the fan according to the concentration parameter value of the carbon dioxide, and controlling the fan to operate at the set output value.
In the design, the operation of the fan is controlled by the concentration parameter value of the carbon dioxide in such a way that the concentration parameter value of the carbon dioxide is compared with the set parameter value, and the operation of the fan is controlled according to the comparison result. And comparing the concentration parameter value of the carbon dioxide with the first set parameter value and the second set parameter value respectively, when the concentration parameter value of the carbon dioxide exceeds the first set parameter value, judging that the concentration of the carbon dioxide is too high, and if the operation is continued, the gas water heater is easy to be dangerous, immediately controlling the gas water heater to stop and sending out prompt information. When the concentration parameter value of the carbon dioxide is judged to be lower than the second set parameter value, the concentration of the carbon dioxide is judged to be very low, the burner burns very fully at the moment, the output value of the fan is not required to be adjusted, and the fan is controlled to keep the current output value to continue to operate. When the concentration parameter value of the carbon dioxide is between the first set parameter value and the second set parameter value, the output value of the fan is considered to be required to be adjusted according to the concentration parameter value of the carbon dioxide, at the moment, the set output value of the fan is determined according to the concentration parameter value of the carbon dioxide, and the fan is controlled to operate at the set output value. And the concentration parameter values of the carbon dioxide are in different ranges, so that different control steps are executed on the fan, the combustion stability of the burner is ensured, and the use safety of a user is improved.
It can be understood that the gas water heater comprises video output equipment and/or audio output equipment, when the carbon dioxide concentration parameter value is too high, prompt information is output through the video output equipment and/or the video output equipment, a user is prompted to window in time for ventilation, and damage caused by the too high carbon dioxide concentration is avoided.
In one possible design, the step of determining the set output value of the blower according to the concentration parameter value of the carbon dioxide specifically includes: determining a concentration value range in which the concentration parameter value of the carbon dioxide is located according to the concentration parameter value of the carbon dioxide; and determining a set output value according to the concentration value range.
In this design, the carbon dioxide concentration value range is set before the gas water heater leaves the factory. The method comprises the steps of setting the highest concentration parameter value of carbon dioxide which can continue to run of the gas water heater, dividing the parameter value from zero to the highest concentration into a plurality of carbon dioxide concentration value ranges, and setting the carbon dioxide concentration value ranges and the set output value of the fan to be in one-to-one correspondence. Determining the current carbon dioxide concentration parameter value of the gas water heater, determining the concentration value range of the current concentration parameter value, obtaining the set output value of the fan according to the corresponding relation between the concentration value range and the set output value, and controlling the fan to operate at the set output value. By setting up the correspondence between the concentration value range of the carbon dioxide and the set output value, the gas water heater can quickly find and determine the set output value of the fan only by judging the concentration value range where the currently determined concentration parameter value is located, the output value of the fan can be efficiently adjusted according to the concentration parameter value of the carbon dioxide, the calculated amount of a processor in the gas water heater is reduced, and the adjustment efficiency of the output value of the fan is improved.
In one possible design, the step of determining the set output value according to the concentration value range specifically includes: determining a concentration grade according to the concentration value range, and acquiring a first corresponding relation between the concentration grade and a set output value; and determining a set output value according to the concentration level and the first corresponding relation.
In the design, before the gas water heater leaves the factory, corresponding concentration levels are set for the concentration value ranges obtained through division, the higher the concentration value in the concentration value ranges is, the higher the concentration level is, and the higher the concentration level is, the higher the output value of the fan is required. And establishing a one-to-one correspondence between the concentration level and the set output value of the fan. And searching and determining a set output value of the fan through a concentration value range, determining a concentration grade according to the concentration value range, and searching and determining the set output value according to a first corresponding relation between the set output value and the concentration grade. The accuracy of determining the set output value of the fan according to the carbon dioxide concentration parameter value is improved.
In one possible design, the step of controlling the fan to operate at the set output value specifically includes: acquiring a current output value of a fan; determining that the current output value is equal to the set output value, and controlling the fan to continue to operate with the current output value; or determining that the current output value is not equal to the set output value, and controlling the fan to operate at the set output value.
In the design, after the set output value of the fan is obtained according to the carbon dioxide concentration parameter value, whether the set output value is the same as the current output value or not needs to be judged, and if the set output value is equal to the current output value, the fan is controlled to keep running at the current output value. If the set output value is not equal to the current output value, the output value of the fan is required to be adjusted, and the fan is controlled to operate at the set output value. The current output value of the fan is obtained, and compared with the set output value, so that the fact that the current output value is the same as the set output value is avoided, the output value of the fan is adjusted, and the efficiency and stability of adjusting the output value of the fan are improved.
In one possible design, the step of determining the concentration parameter value of carbon dioxide specifically includes: acquiring a second corresponding relation between an actual concentration value of carbon dioxide and a concentration parameter value of carbon dioxide, and acquiring the actual concentration value of carbon dioxide; and determining a concentration parameter value of the carbon dioxide according to the actual concentration value of the carbon dioxide and the second corresponding relation.
In the design, the actual concentration value of the carbon dioxide is acquired by the carbon dioxide concentration acquisition device, a calculation formula of the concentration parameter value is acquired, and the concentration parameter value of the carbon dioxide is calculated according to the actual concentration value and the calculation formula. The concentration parameter value of the carbon dioxide obtained through calculation is selected to control the output value of the fan, and compared with the effect of controlling more accurately directly according to the acquired actual concentration value, the error caused by the acquisition precision can be eliminated through a calculation formula.
According to a second aspect of the present invention there is provided a gas water heater comprising: a housing; the burner is arranged in the shell; the burner is arranged in the shell and is used for outputting heat to the heat exchanger; the fan is arranged in the shell and is used for conveying air to the burner; the carbon dioxide acquisition device is arranged in the shell and is used for acquiring the concentration value of carbon dioxide; a memory in which a program or instructions are stored; a processor connected to the blower, the burner and the carbon dioxide capture device, the processor executing programs or instructions stored in memory to implement the control method as in any one of the possible designs of the first aspect.
The gas water heater comprises a shell, a smoke discharging channel, a heat exchanger, a combustion chamber, a burner arranged in the combustion chamber, a carbon dioxide concentration obtaining device, a gas pipeline connected with the burner, and a gas valve and a fan arranged on the gas pipeline. The heat exchanger comprises a cold water inlet and a hot water outlet, cold water flows into the heat exchanger from the cold water inlet, the burner combusts and outputs heat to heat the cold water flowing into the heat exchanger to form hot water, and the hot water flows out of the heat exchanger through the hot water outlet of the heat exchanger. The fan is arranged below the shell, and the fan is electrified to blow air into the combustion chamber, so that oxygen can be supplied to the combustor during working, and the combustion efficiency of the combustor is improved. The carbon dioxide concentration acquisition device is arranged at a position between the burner and the smoke exhaust channel, and can detect the carbon dioxide concentration in the exhaust gas generated after combustion. The gas valve is a gas proportional valve, and the gas proportional valve can adjust the gas quantity and the ratio of gas to oxygen output by the burner.
The gas water heater also comprises a memory and a processor, wherein the processor can execute programs or instructions stored on the memory so as to control the burner to operate at the initial set power and control the fan to start operating at the initial set output value, the carbon dioxide concentration acquisition device is used for acquiring the carbon dioxide concentration value of waste gas generated by the burner, the concentration parameter value of carbon dioxide is determined according to the acquired carbon dioxide concentration value, whether the oxygen supply amount to the burner needs to be increased is judged through the concentration parameter value of carbon dioxide, when the oxygen supply amount to the burner needs to be increased, the output value of the fan is controlled to be increased, and if the oxygen supply amount to the burner does not need to be increased, the fan is controlled to continue operating at the current output value. The output value of the fan is adjusted according to the concentration of carbon dioxide generated by the burner, so that the combustion operation of the gas water heater can be carried out under good conditions in the working process, the phenomenon of insufficient combustion of the gas water heater is avoided, the working stability of gas equipment is ensured, and the use safety of a user is improved.
Since execution of the program or instructions stored on the memory by the processor enables implementation of the control method as in the first aspect, there are all advantageous technical effects of the control method in the first aspect.
In addition, the gas water heater in the technical scheme provided by the invention can also have the following additional technical characteristics:
in one possible design, the gas water heater further comprises: the gas pipeline is connected with the burner and is provided with a gas valve; the combustion chamber is arranged in the shell, and the burner and the heat exchanger are positioned in the combustion chamber; the smoke exhaust channel is arranged in the shell and is communicated with the combustion chamber, and the carbon dioxide acquisition device is arranged in the smoke exhaust channel.
In this design, gas heater still includes the gas pipeline that links to each other with the combustor, and the gas pipeline can carry the gas to the combustor in, installs the gas valve on the gas pipeline, and the gas valve can be selected as the gas proportional valve, can adjust the proportion of gas and air in the entering combustor through the aperture of control gas proportional valve. The heat exchanger and the burner are arranged in the combustion chamber, the side wall of the combustion chamber is provided with a through hole for air to enter, and external air can directly enter the combustion chamber through the through hole to play a role in supplying oxygen to the burner. The exhaust gas generated by combustion is discharged out of the gas water heater through the smoke exhaust channel.
In one possible design, the gas water heater further comprises: a cold water pipe connected to a cold water inlet of the heat exchanger; and the hot water pipe is connected with the hot water outlet of the heat exchanger.
In this design, the gas water heater further comprises a cold water pipe and a hot water pipe, one end of the cold water pipe is connected with the cold water inlet of the heat exchanger, and the other end of the cold water pipe is connected with the water supply pipe. One end of the hot water pipe is connected with the hot water outlet of the heat exchanger, and the other end of the hot water pipe is connected with the water outlet pipe. Cold water to be heated enters the heat exchanger from the cold water pipe, the burner works to heat the cold water in the heat exchanger, and the heated hot water flows out of the heat exchanger through the hot water outlet.
According to a third aspect of the present invention, a readable storage medium is provided, on which a program or instructions is stored which, when executed by a processor, implement the steps of a method of controlling a gas water heater as in any of the possible designs described above. Therefore, the control method of the gas water heater has all the beneficial technical effects of any one of the possible designs and is not repeated herein.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, or may be learned by practice of the invention.
Drawings
The foregoing and/or additional aspects and advantages of the invention will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:
FIG. 1 is a schematic flow chart of a control method of a gas water heater according to a first embodiment of the invention;
FIG. 2 shows one of the flow charts of the control method of the gas water heater in the second embodiment of the invention;
FIG. 3 is a second flow chart of a control method of a gas water heater according to a second embodiment of the invention;
FIG. 4 shows a third flow chart of a control method of a gas water heater according to a second embodiment of the invention;
FIG. 5 shows a fourth flow chart of a control method of a gas water heater in a second embodiment of the invention;
FIG. 6 is a schematic view showing the construction of a gas water heater according to a third embodiment of the present invention;
FIG. 7 shows a schematic block diagram of a gas water heater in a third embodiment of the invention;
FIG. 8 is a flow chart of a control method of a gas water heater in a complete embodiment of the invention;
FIG. 9 shows a schematic block diagram of a gas water heater in a complete embodiment of the invention;
FIG. 10 is a graph showing the relationship between the fan output value and the carbon dioxide concentration parameter value in the control method of the gas water heater according to a complete embodiment of the present invention;
Fig. 11 is a graph showing a correspondence relationship between a carbon dioxide concentration parameter value and a concentration range in a control method of a gas water heater according to a complete embodiment of the present invention.
The correspondence between the reference numerals and the component names in fig. 6 and 7 is:
700 gas water heater, 702 storage, 704 processor, 706 fan, 708 burner, 710 carbon dioxide capture device, 712 combustion chamber, 714 smoke evacuation channel, 716 heat exchanger, 718 gas valve.
Detailed Description
In order that the above-recited objects, features and advantages of the present invention will be more clearly understood, a more particular description of the invention will be rendered by reference to the appended drawings and appended detailed description. It should be noted that, without conflict, the embodiments of the present invention and features in the embodiments may be combined with each other.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those described herein, and therefore the scope of the present invention is not limited to the specific embodiments disclosed below.
A control method of a gas water heater, and a readable storage medium according to some embodiments of the present invention are described below with reference to fig. 1 to 11.
Embodiment one:
as shown in fig. 1, in a first embodiment of the present invention, there is provided a control method of a gas water heater including a burner, a fan capable of delivering air into the burner, and a carbon dioxide concentration obtaining device.
The control method for the gas water heater comprises the following steps:
step S102, controlling the burner to start to operate, and simultaneously controlling the fan to start to operate;
step S104, obtaining a concentration parameter value of carbon dioxide;
and S106, adjusting the output value of the fan operation according to the concentration parameter value of the carbon dioxide.
In this embodiment, the gas water heater includes a housing, a smoke exhaust passage, a heat exchanger, a combustion chamber provided in the housing, a burner provided in the combustion chamber, a carbon dioxide concentration obtaining device, a gas pipe connected to the burner, and a gas valve and a fan provided on the gas pipe. The heat exchanger comprises a cold water inlet and a hot water outlet, cold water flows into the heat exchanger from the cold water inlet, the burner combusts and outputs heat to heat the cold water flowing into the heat exchanger to form hot water, and the hot water flows out of the heat exchanger through the hot water outlet of the heat exchanger. The fan is arranged below the shell, and the fan is electrified to blow air into the combustion chamber, so that oxygen can be supplied to the combustor during working, and the combustion efficiency of the combustor is improved. The carbon dioxide concentration acquisition device is arranged at a position between the burner and the smoke exhaust channel, and can detect the carbon dioxide concentration in the exhaust gas generated after combustion. The gas valve is a gas proportional valve, and the gas proportional valve can adjust the gas quantity and the ratio of gas to oxygen output by the burner.
The method for controlling the gas water heater comprises the steps of receiving a start control instruction, controlling the burner to operate at the initial set power, controlling the fan to start operating at the initial set output value, setting the output end of the fan close to the burner, and outputting air to the burner by the fan to play a role in supplying oxygen to the combustion of the burner. The method comprises the steps of acquiring a carbon dioxide concentration value of waste gas generated by a burner through a carbon dioxide concentration acquisition device, determining a concentration parameter value of carbon dioxide according to the acquired carbon dioxide concentration value, and judging whether the oxygen supply to the burner is needed to be increased or not through the concentration parameter value of the carbon dioxide, namely, whether the output value of the fan operation is needed to be adjusted or not. And when the oxygen supply to the burner is judged to be needed, controlling the fan to increase the output value, and if the oxygen supply to the burner is judged not to be needed, controlling the fan to continue to operate at the current output value. The output value of the fan is adjusted according to the concentration of carbon dioxide generated by the burner, so that the combustion operation of the gas water heater can be carried out under good conditions in the working process, the phenomenon of insufficient combustion of the gas water heater is avoided, the working stability of gas equipment is ensured, and the use safety of a user is improved. The problems of incomplete combustion, vibration combustion and the like of the burner in the gas water heater are fundamentally avoided.
The output value of the fan can directly influence the air quantity output by the fan, so that the combustion state of the combustor is influenced. The output value of the fan is specifically the duty cycle of the fan operation.
Embodiment two:
as shown in fig. 2, a second embodiment of the present invention provides a control method of a gas water heater, the gas water heater including a burner, a fan, and a carbon dioxide concentration obtaining device, the fan being capable of delivering air into the burner.
The control method for the gas water heater comprises the following steps:
step S202, controlling the fan and the burner to start to operate;
step S204, obtaining a concentration parameter value of carbon dioxide;
step S206, judging that the concentration parameter value of the carbon dioxide is larger than the first set parameter value, controlling the fan and the burner to stop, and/or outputting prompt information;
step S208, judging that the concentration parameter value of the carbon dioxide is smaller than a second set parameter value, and controlling the fan to continue to operate at the current fan output value;
step S210, judging that the concentration parameter value of the carbon dioxide is larger than or equal to the second set parameter value and smaller than or equal to the first set parameter value, searching the set output value of the corresponding fan through the concentration parameter value of the carbon dioxide, and controlling the fan to operate according to the set output value.
In this embodiment, a start control command is received, the burner is controlled to operate at an initial set power, the fan is controlled to start operating at an initial set output value, a carbon dioxide concentration value of exhaust gas generated by the burner is obtained by a carbon dioxide concentration obtaining device, a concentration parameter value of carbon dioxide is determined according to the obtained carbon dioxide concentration value, and whether the oxygen supply to the burner is required to be increased is determined according to the concentration parameter value of carbon dioxide. The method for controlling the operation of the fan through the carbon dioxide concentration parameter value is that the carbon dioxide concentration parameter value is compared with a set parameter value in a numerical mode, and the operation of the fan is controlled according to a comparison result. And comparing the concentration parameter value of the carbon dioxide with the first set parameter value and the second set parameter value respectively, when the concentration parameter value of the carbon dioxide exceeds the first set parameter value, judging that the concentration of the carbon dioxide is too high, and if the operation is continued, the gas water heater is easy to be dangerous, immediately controlling the gas water heater to stop and sending out prompt information. When the concentration parameter value of the carbon dioxide is judged to be lower than the second set parameter value, the concentration of the carbon dioxide is judged to be very low, the burner burns very fully at the moment, the output value of the fan is not required to be adjusted, and the fan is controlled to keep the current output value to continue to operate. When the concentration parameter value of the carbon dioxide is between the first set parameter value and the second set parameter value, the output value of the fan is considered to be required to be adjusted according to the concentration parameter value of the carbon dioxide, at the moment, the set output value of the fan is determined according to the concentration parameter value of the carbon dioxide, and the fan is controlled to operate at the set output value. And the concentration parameter values of the carbon dioxide are in different ranges, so that different control steps are executed on the fan, the combustion stability of the burner is ensured, and the use safety of a user is improved.
In one embodiment, the concentration parameter value of the carbon dioxide is compared with the first set parameter value, and the concentration parameter value of the carbon dioxide is larger than the first set parameter value, at the moment, all components in the gas water heater are controlled to stop running, and the gas valve is controlled to be closed. The operation state of the gas water heater is automatically controlled according to the comparison result, manual operation is not needed, and the use safety of the gas water heater is improved.
In another embodiment, the gas water heater further comprises a video output device and an audio output device, and the gas water heater can output prompt information through the video output device and the audio output device. And comparing the concentration parameter value of the carbon dioxide with the first set parameter value, obtaining that the concentration parameter value of the carbon dioxide is larger than the first set parameter value, and outputting prompt information at the moment. The prompt information comprises the concentration level of the carbon dioxide concentration generated by the combustion of the gas water heater, and a user can select whether to turn off the components in the gas water heater or not by the concentration level of the carbon dioxide. For example: if the carbon dioxide concentration level is too high, the gas valve in the gas water heater can be controlled to be closed, the blower is controlled to increase the air quantity, and the carbon dioxide concentration is reduced rapidly.
In another specific embodiment, the gas water heater further comprises a signal transmission device, and the signal transmission device can communicate with the mobile terminal. The concentration parameter value of the carbon dioxide is compared with the first set parameter value, the concentration parameter value of the carbon dioxide is obtained to be larger than the first set parameter value, prompt information is output at the moment, and the gas water heater is controlled to stop running, so that the running state of the gas water heater is automatically controlled according to the comparison result, manual operation is not needed, and the use safety of the gas water heater is improved. The output prompt information is sent to the mobile terminal of the user, and the user can remotely know the service condition of the gas water heater. The output prompt information can also be sent to an after-sales department of the gas water heater so as to know the use condition of a user in time after sales.
It can be understood that the gas water heater comprises video output equipment and/or audio output equipment, when the carbon dioxide concentration parameter value is too high, prompt information is output through the video output equipment and/or the video output equipment, a user is prompted to window in time for ventilation, and damage caused by the too high carbon dioxide concentration is avoided.
As shown in fig. 3, in any of the above embodiments, the step of searching the set output value of the corresponding fan by the concentration parameter value of carbon dioxide specifically includes:
step S302, searching a concentration value range in which a concentration parameter value of carbon dioxide is located;
step S304, determining the concentration level of the carbon dioxide concentration according to the concentration value range, and searching a first corresponding relation between the set output value and the concentration level;
step S306, searching and setting a force value according to the concentration level and the first corresponding relation.
In this embodiment, the carbon dioxide concentration value range is set before the gas water heater leaves the factory. The method comprises the steps of setting the highest concentration parameter value of carbon dioxide which can continue to run of the gas water heater, dividing the zero-highest concentration parameter value into a plurality of carbon dioxide concentration value ranges, setting the carbon dioxide concentration value ranges and the set output value of the fan to be in one-to-one correspondence, namely directly searching the set output value through the carbon dioxide concentration value ranges. Determining the current carbon dioxide concentration parameter value of the gas water heater, determining the concentration value range of the current concentration parameter value, obtaining the set output value of the fan according to the corresponding relation between the concentration value range and the set output value, and controlling the fan to operate at the set output value. By setting up the correspondence between the concentration value range of the carbon dioxide and the set output value, the gas water heater can quickly find and determine the set output value of the fan only by judging the concentration value range where the currently determined concentration parameter value is located, the output value of the fan can be efficiently adjusted according to the concentration parameter value of the carbon dioxide, the calculated amount of a processor in the gas water heater is reduced, and the adjustment efficiency of the output value of the fan is improved.
And directly searching a corresponding fan set output value through the carbon dioxide concentration range. Before the gas water heater leaves the factory, setting corresponding concentration levels for the concentration value ranges obtained by dividing, wherein the higher the concentration value in the concentration value ranges is, the higher the concentration level is, and the higher the concentration level is, the higher the output value of the fan is required. And establishing a one-to-one correspondence between the concentration level and the set output value of the fan, namely directly finding the set output value of the fan through the concentration level. And searching and determining a set output value of the fan through a concentration value range, determining a concentration grade according to the concentration value range, and searching and determining the set output value according to a first corresponding relation between the set output value and the concentration grade. The accuracy of determining the set output value of the fan according to the carbon dioxide concentration parameter value is improved.
As shown in fig. 4, in any of the above embodiments, the step of controlling the operation of the fan according to the set output value specifically includes:
step S402, reading a current output value of a current running state of the fan;
step S404, judging whether the current output value is equal to the set output value, if yes, executing step S406, and if not, executing step S408;
Step S406, controlling the fan to continue to run according to the current output value;
step S408, the fan is controlled to operate according to the set output value.
In this embodiment, after the set output value of the fan is obtained according to the carbon dioxide concentration parameter value, it is required to determine whether the set output value is the same as the current output value, and if it is determined that the set output value is the same as the current output value, the fan is controlled to continue to keep running at the current output value. If the set output value is not equal to the current output value, the output value of the fan is required to be adjusted, and the fan is controlled to operate at the set output value. The current output value of the fan is obtained, and compared with the set output value, so that the fact that the current output value is the same as the set output value is avoided, the output value of the fan is adjusted, and the efficiency and stability of adjusting the output value of the fan are improved.
As shown in fig. 5, in any of the above embodiments, the step of obtaining the concentration parameter value of carbon dioxide specifically includes:
step S502, acquiring an actual concentration value of carbon dioxide through a carbon dioxide concentration acquisition device;
step S504, obtaining a second corresponding relation between the concentration parameter value and the actual concentration value of the carbon dioxide;
Step S506, the concentration parameter value of the carbon dioxide is searched according to the actual concentration value of the carbon dioxide and the second corresponding relation.
In this embodiment, the actual concentration value of carbon dioxide is acquired by the carbon dioxide concentration acquiring device, and the second correspondence between the concentration parameter value and the actual concentration value, that is, the correspondence between the actual concentration value and the concentration parameter value exists, is acquired, and the corresponding concentration parameter value can be directly found according to the actual concentration value. The concentration parameter value of the carbon dioxide obtained through calculation is selected to control the output value of the fan, and compared with the effect of controlling more accurately directly according to the acquired actual concentration value, the error caused by the acquisition precision can be eliminated through a calculation formula.
In one embodiment, the concentration parameter value of the carbon dioxide corresponds to an actual concentration value range of the carbon dioxide, that is, when the actual concentration value of the carbon dioxide detected by collection falls within a set range, the corresponding concentration parameter value is directly found according to the set range.
In another embodiment, the concentration parameter value of carbon dioxide corresponds to an approximation of the actual concentration value of carbon dioxide, i.e. after the detected actual concentration value of carbon dioxide is collected, the actual concentration value is approximated, and the carbon dioxide concentration parameter value is determined according to the correspondence between the approximation and the concentration parameter value and the actual value of carbon dioxide concentration.
Embodiment III:
as shown in fig. 6, in a third embodiment of the present invention, there is provided a gas water heater 700 including: a housing, a heat exchanger 716 disposed within the housing, a burner 708, a fan 706, and a carbon dioxide capture device 710.
The gas water heater 700 in this embodiment includes a housing, a smoke exhaust passage 714, a heat exchanger 716, a combustion chamber 712, a burner 708 provided in the combustion chamber 712, a carbon dioxide concentration obtaining device, a gas pipe connected to the burner 708, and a gas valve 718 and a fan 706 provided in the gas pipe. The heat exchanger 716 includes a cold water inlet from which cold water flows into the heat exchanger 716 and a hot water outlet from which hot water flows out of the heat exchanger 716 through the hot water outlet of the heat exchanger 716 by the burner 708 burning heat to warm the cold water flowing into the heat exchanger 716 to form hot water. The fan 706 is arranged below the shell, and the fan 706 is electrified to blow air into the combustion chamber 712, so that oxygen can be supplied to the burner 708 when the burner 708 works, and the combustion efficiency of the burner 708 is improved. The carbon dioxide concentration acquiring device is provided at a position between the burner 708 and the smoke evacuation passage 714, and is capable of detecting the carbon dioxide concentration in the exhaust gas generated when the combustion is completed. The gas valve 718 is a gas proportional valve, which can adjust the amount of gas and the ratio of gas to oxygen output from the burner 708.
In one embodiment, the heat exchanger 716, the burner 708, and the fan 706 are disposed within the housing of the gas water heater 700, and the heat exchanger 716, the burner 708, and the fan 706 are disposed within the housing of the gas water heater 700 from above and below, and the smoke evacuation channel 714 is disposed at the uppermost end of the housing, so that the waste gas turned over by the combustion is quickly discharged out of the gas water heater 700 through the smoke evacuation channel 714. Both the burner 708 and the heat exchanger 716 are disposed within the combustion chamber 712, and heat generated by combustion of the burner 708 can directly act on the heat exchanger 716 above the burner 708, thereby heating the water in the heat exchanger 716. The burner 708 is also provided with a gas valve 718, the gas valve 718 being capable of controlling the amount of gas entering the burner 708. The blower 706 is capable of supplying air to the burner 708 and serves to supply oxygen to the burner 708.
As shown in fig. 7, the gas water heater 700 further includes a memory 702 and a processor 704, the processor 704 being connected to a fan 706, a burner 708 and a carbon dioxide capture device 710. The processor 704 can execute a program or instructions stored on the memory 702 to realize controlling the burner 708 to operate at an initial set power, and controlling the fan 706 to start operating at an initial set output value, acquiring a carbon dioxide concentration value of exhaust gas generated by the burner 708 by the carbon dioxide concentration acquiring device, determining a concentration parameter value of carbon dioxide according to the acquired carbon dioxide concentration value, determining whether the oxygen supply to the burner 708 is required to be increased by the concentration parameter value of carbon dioxide, when it is determined that the oxygen supply to the burner 708 is required to be increased, controlling the fan 706 to increase the output value, and if it is determined that the oxygen supply to the burner 708 is not required to be increased, controlling the fan 706 to continue operating at the current output value. The output value of the fan 706 is adjusted according to the concentration of the carbon dioxide generated by the burner 708, so that the combustion operation of the gas water heater 700 can be performed under good conditions in the working process, the phenomenon of insufficient combustion of the gas water heater 700 is avoided, the working stability of gas equipment is ensured, and the use safety of a user is improved.
Since the execution of the program or instructions stored on the memory 702 by the processor 704 can realize the control method as in the first or second embodiment, it has all the advantageous technical effects of the control method in the first or second embodiment.
In any of the above embodiments, the gas water heater 700 further comprises a gas conduit connected to the burner 708, a gas valve 718 disposed on the gas conduit, and a combustion chamber 712 disposed within the housing. Wherein the burner 708 and heat exchanger 716 are located within the combustion chamber 712; the smoke exhaust passage 714 is provided in the housing, the smoke exhaust passage 714 communicates with the combustion chamber 712, and the carbon dioxide capture device 710 is provided in the smoke exhaust passage 714.
In this embodiment, the gas water heater 700 further includes a gas pipe connected to the burner 708, the gas pipe being capable of delivering gas to the burner 708, a gas valve 718 being mounted on the gas pipe, the gas valve 718 being optionally a gas proportional valve, the ratio of gas to air entering the burner 708 being adjustable by controlling the opening of the gas proportional valve. The heat exchanger 716 and the burner 708 are both arranged in the combustion chamber 712, the side wall of the combustion chamber 712 is provided with a through hole for air to enter, and external air can directly enter the combustion chamber 712 through the through hole to supply oxygen to the burner 708. Exhaust gas from the combustion exits the gas water heater 700 through the exhaust passage 714.
In any of the above embodiments, the gas water heater 700 further comprises a cold water pipe and a hot water pipe. The cold water pipe is connected to the cold water inlet of the heat exchanger 716, and the hot water pipe is connected to the hot water outlet of the heat exchanger 716.
In this embodiment, the gas water heater 700 further includes a cold water pipe having one end connected to the cold water inlet of the heat exchanger 716 and a hot water pipe having the other end connected to the water supply pipe. One end of the hot water pipe is connected with a hot water outlet of the heat exchanger 716, and the other end of the hot water pipe is connected with a water outlet pipe. Cold water to be heated enters the heat exchanger 716 from the cold water pipe, the burner 708 is operated to heat the cold water in the heat exchanger 716, and the heated hot water flows out of the heat exchanger 716 through the hot water outlet.
Embodiment four:
as shown in fig. 8, a first embodiment of the present invention provides a control method of a gas water heater, which is used for the gas water heater in the third embodiment. The control method of the gas water heater comprises the following steps:
step S802, controlling the gas water heater to start to operate;
step S804, detecting a concentration value h of carbon dioxide;
step S806, judging whether the concentration value h is larger than the first set parameter value Hn, if so, executing step S808, and if not, executing step S814;
Step S808, judging whether the concentration value H is smaller than the second set parameter value H1, if so, executing step S810, and if not, returning to execute step S802;
step S810, judging whether the current output value is equal to the set output value, if so, executing step S812, and if not, returning to execute step S802;
step S812, controlling the fan to run at a set output value;
step S814, controlling the gas water heater to stop running and/or outputting prompt information.
In this embodiment, a start control command is received, the burner is controlled to operate at an initial set power, the fan is controlled to start operating at an initial set output value, a carbon dioxide concentration value of exhaust gas generated by the burner is obtained by a carbon dioxide concentration obtaining device, a concentration parameter value of carbon dioxide is determined according to the obtained carbon dioxide concentration value, and whether the oxygen supply to the burner is required to be increased is determined according to the concentration parameter value of carbon dioxide. And receiving a start control instruction, controlling the burner to operate at the initial set power, controlling the fan to operate at the initial set output value, acquiring a carbon dioxide concentration value of waste gas generated by the burner through a carbon dioxide concentration acquisition device, determining a concentration parameter value of carbon dioxide according to the acquired carbon dioxide concentration value, judging whether the oxygen supply to the burner is needed or not through the concentration parameter value of carbon dioxide, and controlling the fan to increase the output value when the oxygen supply to the burner is judged to be needed, and if the oxygen supply to the burner is judged not to be needed to be increased, controlling the fan to continue to operate at the current output value. According to the concentration grade of the concentration value of the carbon dioxide, the corresponding set output value of the fan is searched according to the concentration grade, the output value of the fan is adjusted according to the concentration of the carbon dioxide generated by the burner, the combustion operation of the gas water heater can be carried out under good conditions in the working process, the phenomenon of insufficient combustion of the gas water heater is avoided, the working stability of gas equipment is ensured, and the use safety of a user is improved.
And h is a concentration parameter value, the concentration parameter value acquires an actual concentration value of the carbon dioxide through a carbon dioxide concentration acquisition device, a calculation formula of the concentration parameter value is acquired, and the concentration parameter value of the carbon dioxide is calculated according to the actual concentration value and the calculation formula. The concentration parameter value of the carbon dioxide obtained through calculation is selected to control the output value of the fan, and compared with the effect of controlling more accurately directly according to the acquired actual concentration value, the error caused by the acquisition precision can be eliminated through a calculation formula.
It can be understood that after the set output value of the fan is obtained according to the carbon dioxide concentration parameter value, whether the set output value is the same as the current output value needs to be judged, and if the set output value is equal to the current output value, the fan is controlled to keep running at the current output value. If the set output value is not equal to the current output value, the output value of the fan is required to be adjusted, and the fan is controlled to operate at the set output value. The current output value of the fan is obtained, and compared with the set output value, so that the fact that the current output value is the same as the set output value is avoided, the output value of the fan is adjusted, and the efficiency and stability of adjusting the output value of the fan are improved.
As shown in fig. 9, the gas water heater further includes a system control unit 902, a gas control unit 904, a fan control unit 906, a water temperature detection unit 908, a water flow rate detection unit 910, and a carbon dioxide concentration detection unit 912.
As shown in fig. 10, the carbon dioxide concentration detection unit 912 includes a carbon dioxide concentration acquisition device that is installed between the burner of the water heater and the outlet of the smoke exhaust pipe, and stores the correspondence between the gas proportional valve control output value p and the fan output value PR of the water heater in the system control unit 902.
When the water heater burns fuel gas, the concentration h of carbon dioxide is detected first, and the concentration range of carbon dioxide corresponding to the concentration h of carbon dioxide is used.
And judging that h is more than Hn, and alarming and/or stopping operation.
And if the H is less than H1, controlling the gas water heater to continue to operate.
As shown in fig. 11, the corresponding carbon dioxide concentration level is determined according to h, and the fan output value PRn is determined according to the carbon dioxide concentration level, so that the gas water heater operates in a good range.
In the embodiment, the control method is used for controlling the water heater, so that the problems of poor ventilation environment, different heat value of fuel gas, reverse air flow of the smoke exhaust pipe and the like can be solved. The problems of incomplete combustion, vibration combustion and the like are easy to be caused.
Fifth embodiment:
in one embodiment of the present invention, a readable storage medium is provided, on which a program is stored, which when executed by a processor, implements the control method of the gas water heater in any one of the embodiments, thereby having all the beneficial technical effects of the control method of the gas water heater in any one of the embodiments.
Among them, readable storage media such as Read-Only Memory (ROM), random access Memory (Random Access Memory, RAM), magnetic disk or optical disk, and the like.
It should be understood that the invention is not limited to the particular arrangements and instrumentality described above and shown in the drawings. For the sake of brevity, a detailed description of known methods is omitted here. In the above embodiments, several specific steps are described and shown as examples. However, the method processes of the present invention are not limited to the specific steps described and shown, and those skilled in the art can make various changes, modifications and additions, or change the order between steps, after appreciating the spirit of the present invention.
It should also be noted that the exemplary embodiments mentioned in this disclosure describe some methods or systems based on a series of steps or devices. However, the present invention is not limited to the order of the above-described steps, that is, the steps may be performed in the order mentioned in the embodiments, or may be performed in a different order from the order in the embodiments, or several steps may be performed simultaneously.
In the present invention, the term "plurality" means two or more, unless explicitly defined otherwise. The terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; "coupled" may be directly coupled or indirectly coupled through intermediaries. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
In the description of the present specification, the terms "one embodiment," "some embodiments," "particular embodiments," and the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (7)

1. A control method of a gas water heater, the gas water heater comprising a burner, a fan and a carbon dioxide concentration obtaining device, the fan being used for delivering air to the burner, the control method comprising:
controlling the operation of the burner and the fan;
determining a concentration parameter value of carbon dioxide;
adjusting the output value of the running of the fan according to the concentration parameter value of the carbon dioxide;
the step of adjusting the output value of the fan operation according to the concentration parameter value of the carbon dioxide specifically comprises the following steps:
controlling the burner and the fan to stop running and/or outputting prompt information based on the concentration parameter value of the carbon dioxide being greater than a first set parameter value;
controlling the fan to continue to operate at a current fan output value based on the concentration parameter value of the carbon dioxide being less than a second set parameter value;
determining a set output value of the fan according to the concentration parameter value of the carbon dioxide, and controlling the fan to operate at the set output value based on the concentration parameter value of the carbon dioxide being greater than or equal to a second set parameter value and less than or equal to a first set parameter value;
The step of determining the set output value of the fan according to the concentration parameter value of the carbon dioxide specifically comprises the following steps:
determining a concentration value range in which the concentration parameter value of the carbon dioxide is located according to the concentration parameter value of the carbon dioxide;
determining the set output value according to the concentration value range;
the step of determining the concentration parameter value of the carbon dioxide specifically comprises the following steps:
acquiring a second corresponding relation between an actual concentration value of carbon dioxide and a concentration parameter value of the carbon dioxide, and acquiring the actual concentration value of the carbon dioxide;
and determining the concentration parameter value of the carbon dioxide according to the actual concentration value of the carbon dioxide and the second corresponding relation.
2. The method for controlling a gas water heater according to claim 1, wherein the step of determining the set output value according to the concentration value range specifically comprises:
determining a concentration grade according to the concentration value range, and acquiring a first corresponding relation between the grade of the concentration and the set output value;
and determining the set output value according to the concentration grade and the first corresponding relation.
3. The method for controlling a gas water heater according to claim 1, wherein the step of controlling the fan to operate at a set output value comprises:
Acquiring a current output value of the fan;
determining that the current output value is equal to the set output value, and controlling the fan to continue to operate with the current output value; or (b)
And determining that the current output value is not equal to the set output value, and controlling the fan to operate at the set output value.
4. A gas water heater, comprising:
a housing;
the burner is arranged in the shell;
the fan is arranged in the shell and is used for conveying air to the burner;
the carbon dioxide acquisition device is arranged in the shell and is used for acquiring the concentration value of carbon dioxide;
a memory in which a program or instructions are stored;
a processor connected to the fan, the burner and the carbon dioxide capture device, the processor executing programs or instructions stored in the memory to implement the control method of the gas water heater as claimed in any one of claims 1 to 3.
5. The gas water heater as recited in claim 4, further comprising:
the combustion chamber is arranged in the shell, and the burner is positioned in the combustion chamber;
The smoke exhaust channel is arranged in the shell and is communicated with the combustion chamber, and the carbon dioxide acquisition device is arranged in the smoke exhaust channel.
6. The gas water heater as recited in claim 5, further comprising:
a heat exchanger disposed in the combustion chamber;
a cold water pipe connected to a cold water inlet of the heat exchanger;
and the hot water pipe is connected with the hot water outlet of the heat exchanger.
7. A readable storage medium, characterized in that the readable storage medium has stored thereon a program or instructions which, when executed by a processor, implement the steps of the control method of a gas water heater as claimed in any one of claims 1 to 3.
CN202011602639.9A 2020-12-29 2020-12-29 Control method of gas water heater, gas water heater and readable storage medium Active CN114754496B (en)

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