CN104422141B - Control method of gas water heater adaptable to different altitudes - Google Patents
Control method of gas water heater adaptable to different altitudes Download PDFInfo
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- CN104422141B CN104422141B CN201310393148.1A CN201310393148A CN104422141B CN 104422141 B CN104422141 B CN 104422141B CN 201310393148 A CN201310393148 A CN 201310393148A CN 104422141 B CN104422141 B CN 104422141B
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Abstract
the invention relates to a control method of a gas water heater adaptable to different altitudes, which is characterized by comprising the following steps: the water heater is operated in a trial mode according to the set fan rotating speed, the actual combustion heat is compared with the calculated combustion heat, the altitude where the water heater is located is judged, the fan rotating speed and the proportional valve current value corresponding to the optimal altitude heat load state are matched, and then all parameters are stored, so that the water heater works according to the corresponding fan rotating speed and the proportional valve current value. By the method, the water heater can automatically identify and judge the altitude to be obtained, so that the corresponding fan rotating speed and the proportional valve current value are matched, the gas utilization rate of the water heater is improved, and the purposes of saving energy and improving gas efficiency are achieved. The invention has obvious effect and is suitable for popularization and application.
Description
Technical Field
The invention relates to the field of water heaters, in particular to a control method of a gas water heater suitable for different altitudes.
Background
the gas water heater on the market does not consider the altitude of the area where the user is located. Because the boiling point of water in the plateau area is lower, and the air pressure value is also lower, if the gas water heater adopts the working mode of the plain area, the gas can not be fully combusted, and the heating time is prolonged. This wastes energy and delays the user's usage time.
And current high-altitude gas device generally adopts increase air inlet wind pressure to accelerate air flow rate, make the abundant burning of gas realization. However, because the existing gas water heater generally adjusts the air inflow by changing the rotating speed of the fan, and adjusts the gas inflow by changing the secondary pressure value. Different users are located at different altitudes. There is a need to provide an automatic control method for gas water heater to meet the use requirements of users with different altitude.
In view of the above, the present invention is particularly proposed.
Disclosure of Invention
the invention aims to provide a control method of a gas water heater adaptable to different altitudes so as to automatically match the altitudes of the water heater.
in order to realize the purpose of the invention, the following technical scheme is adopted:
A control method of a gas water heater adaptable to different altitudes comprises the following steps: the water heater is operated in a trial mode according to the set fan rotating speed, the actual combustion heat is compared with the calculated combustion heat, the altitude of the water heater is judged, the fan rotating speed and the proportional valve current value corresponding to the optimal altitude heat load state are matched, and then all parameters are stored, so that the water heater works according to the corresponding fan rotating speed and the proportional valve current value.
further, the calculated combustion heat is a heat value representing the combustion of the gas calculated according to the water inlet temperature, the set temperature and the water inlet flow of the water heater; the actual combustion heat is the actual combustion heat of the fuel gas obtained according to the actual water outlet temperature.
further, the altitude determination process includes the steps of,
21) The method comprises the steps that the rotating speed of a fan and the current of a proportional valve in the optimal heat load state of a corresponding water heater are stored in advance under the condition of different altitudes;
22) The water heater is tested to run for a period of time according to the fan rotating speed and the proportional valve current in the default standard state in the program;
23) Calculating to obtain the calculated combustion heat according to the inlet water temperature, the set temperature and the water flow and obtaining the actual combustion heat according to the actual outlet water temperature;
24) And calculating the calculated combustion heat and the actual combustion heat, and judging the corresponding altitude of the water heater.
Further, when the current value of the proportional valve of the water heater is fixed, the rotating speed of the fan of the water heater is increased along with the rise of the altitude and is reduced along with the reduction of the altitude.
further, the calculated combustion heat is subtracted from the actual combustion heat, the difference corresponding to different altitudes. When the difference is 0, the altitude of the water heater is 0.
Further, the water heater calculates and judges the fan voltage, the fan current and the proportional valve current value of the water heater in the optimal heat load state corresponding to the altitude, and stores the fan voltage, the fan current and the proportional valve current value, so that the water heater works according to the parameters when working.
further, different altitudes are respectively matched with different differences of calculated combustion heat and actual combustion heat in advance and stored.
Furthermore, the water heater calls the pre-stored fan voltage, fan current and proportional valve current value of the water heater in the optimal heat load state corresponding to the altitude according to the calculated and judged altitude, so that the water heater works according to the parameters.
further, the water heater stores fan voltage, fan current and proportional valve current values corresponding to the optimal heat load states of the water heaters with different altitudes in advance.
further, the working process of the water heater comprises the following steps of 11) starting the water heater and powering on; 12) the water heater enters a selected mode; 13) the method comprises the following steps that a fan tries to run for a period of time according to the rotating speed in a program default standard state; 14) collecting inlet water temperature, outlet water temperature, water flow, fan rotating speed, secondary pressure value and the like to obtain calculated combustion heat and actual combustion heat; 15) according to the difference value between the calculated combustion heat and the actual combustion heat, matching with the pre-stored difference value to judge the altitude at the moment; 16) calling a pre-stored matching parameter corresponding to the optimal heat load state of the altitude according to the altitude; 17) storing the best matching parameters; 18) and adjusting the rotating speed of the fan and the current of the proportional valve to enable the water heater to work according to the optimal matching parameters.
By the method, the water heater can automatically identify and judge the altitude to be obtained, so that the corresponding fan rotating speed and the proportional valve current value are matched, the gas utilization rate of the water heater is improved, and the purposes of saving energy and improving gas efficiency are achieved. More particularly, the water heater is operated for a period of time according to the rotating speed of the fan under the default standard state of the program, and various parameters obtained by calculation and stored in the program in advance are utilized
and obtaining the fan rotating speed and the proportional valve current value corresponding to the optimal heat load state of the water heater, so that the water heater is automatically matched with the optimal working mode corresponding to the environment, and the water heater works according to the fan rotating speed and the proportional valve current value corresponding to the optimal state. The invention has obvious effect and is suitable for popularization and application.
drawings
FIG. 1 is a schematic flow diagram of the present invention;
FIG. 2 is a schematic flow diagram of the preferred process of the present invention.
Detailed Description
The present invention will be described in further detail with reference to examples.
Example 1
as shown in fig. 1, a control method of a gas water heater adaptable to different altitudes is characterized in that: the water heater is operated in a trial mode according to the set fan rotating speed, the actual combustion heat is compared with the calculated combustion heat, the altitude of the water heater is judged, the fan rotating speed and the proportional valve current value corresponding to the optimal altitude heat load state are matched, and then all parameters are stored, so that the water heater works according to the corresponding fan rotating speed and the proportional valve current value.
In this embodiment, the calculated combustion heat is a heat value representing combustion of gas, which is calculated according to the water inlet temperature, the set temperature and the water inlet flow of the water heater; the actual combustion heat is the actual combustion heat of the fuel gas obtained according to the actual water outlet temperature.
in this embodiment, the altitude determination process includes the following steps, 21) storing the fan rotation speed and the proportional valve current of the corresponding water heater in the optimal heat load state under different altitudes in advance; 22) the water heater is tested to run for a period of time according to the fan rotating speed and the proportional valve current in the default standard state in the program; 23) calculating to obtain the calculated combustion heat according to the inlet water temperature, the set temperature and the water flow and obtaining the actual combustion heat according to the actual outlet water temperature; 24) and calculating the calculated combustion heat and the actual combustion heat, and judging the corresponding altitude of the water heater.
The water heater stores fan voltage, fan current and proportional valve current values corresponding to the optimal heat load states of the water heaters with different altitudes in advance. Therefore, after the water heater obtains the altitude according to calculation and judgment, the pre-stored fan voltage, fan current and proportional valve current value corresponding to the optimal heat load state of the water heater with the altitude are called, so that the water heater works according to the parameters.
When the rotating speed of the fan of the water heater is constant, the current value of the proportional valve of the water heater is reduced along with the rise of the altitude and is increased along with the reduction of the altitude. Similarly, when the current value of the proportional valve of the water heater is fixed, the rotating speed of the fan of the water heater is increased along with the increase of the altitude and is reduced along with the decrease of the altitude.
Example 2
As shown in fig. 2, in this embodiment, the method for controlling a gas water heater adaptable to different altitudes specifically includes the following steps: 11) starting up the water heater and powering on; 12) the water heater enters a selected mode; 13) the method comprises the following steps that a fan tries to run for a period of time according to the rotating speed in a program default standard state; 14) collecting inlet water temperature, outlet water temperature, water flow, fan rotating speed, secondary pressure value and the like to obtain calculated combustion heat and actual combustion heat; 15) according to the difference value between the calculated combustion heat and the actual combustion heat, matching with the pre-stored difference value to judge the altitude at the moment; 16) calling a pre-stored matching parameter corresponding to the optimal heat load state of the altitude according to the altitude; 17) storing the best matching parameters; 18) and adjusting the rotating speed of the fan and the current of the proportional valve to enable the water heater to work according to the optimal matching parameters.
In this embodiment, the specific method for obtaining the altitude by using the calculated combustion heat and the actual combustion heat is as follows: 31) respectively and correspondingly calculating different differences between the combustion heat and the actual combustion heat at different altitudes in advance, and storing the differences;
32) Subtracting the actual combustion heat from the calculated combustion heat obtained by the trial operation to obtain a difference value;
33) And comparing the difference obtained by the trial operation with a pre-stored difference, and judging the corresponding altitude.
In this embodiment, the calculated combustion heat is preferably the actual combustion heat of the water heater at the standard atmospheric pressure. Therefore, when the difference between the calculated combustion heat amount and the actual combustion heat amount is 0, the altitude at which the water heater is located is 0.
In this embodiment, the fan voltage, the fan current, and the proportional valve current value in the optimal thermal load state of the water heater at different altitudes are stored in advance. After the water heater obtains the altitude according to calculation and judgment, the water heater calls and stores the pre-stored fan voltage, fan current and proportional valve current value corresponding to the optimal heat load state, and the water heater works according to the parameters when working.
The embodiments in the above embodiments can be further combined or replaced, and the embodiments are only used for describing the preferred embodiments of the present invention, and do not limit the concept and scope of the present invention, and various changes and modifications made to the technical solution of the present invention by those skilled in the art without departing from the design idea of the present invention belong to the protection scope of the present invention.
Claims (5)
1. A control method of a gas water heater adaptable to different altitudes is characterized by comprising the following steps: the water heater is operated in a trial mode according to the set fan rotating speed, the calculated combustion heat is obtained according to the inlet water temperature, the set temperature and the water flow, the actual combustion heat is obtained according to the actual outlet water temperature, the actual combustion heat is compared with the calculated combustion heat, the altitude of the water heater is judged, the fan rotating speed and the proportional valve current value corresponding to the optimal altitude heat load state are matched, and then all parameters are stored, so that the water heater works according to the corresponding fan rotating speed and the proportional valve current value;
The altitude determination process described includes the steps of,
21) The method comprises the steps that the rotating speed of a fan and the current of a proportional valve in the optimal heat load state of a corresponding water heater are stored in advance under the condition of different altitudes;
22) The water heater is tested to run for a period of time according to the fan rotating speed and the proportional valve current in the default standard state in the program;
23) Calculating to obtain the calculated combustion heat according to the inlet water temperature, the set temperature and the water flow and obtaining the actual combustion heat according to the actual outlet water temperature;
24) Calculating the calculated combustion heat and the actual combustion heat, and judging the corresponding altitude of the water heater;
Calculating difference values of different combustion heat and actual combustion heat respectively and correspondingly at different altitudes in advance, and storing the difference values; the water heater calls pre-stored fan voltage, fan current and proportional valve current values of the water heater in the optimal heat load state corresponding to the altitude according to the calculated and judged altitude, so that the water heater works according to the parameters;
The water heater stores fan voltage, fan current and proportional valve current values corresponding to the optimal heat load states of the water heaters with different altitudes in advance;
The specific operation of the water heater is as follows,
11) Starting up the water heater and powering on; 12) the water heater enters a selected mode; 13) the method comprises the following steps that a fan tries to run for a period of time according to the rotating speed in a program default standard state; 14) collecting inlet water temperature, outlet water temperature, water flow, fan rotating speed and secondary pressure value to obtain calculated combustion heat and actual combustion heat; 15) according to the difference value between the calculated combustion heat and the actual combustion heat, matching with the pre-stored difference value to judge the altitude at the moment; 16) calling a pre-stored matching parameter corresponding to the optimal heat load state of the altitude according to the altitude; 17) storing the best matching parameters; 18) and adjusting the rotating speed of the fan and the current of the proportional valve to enable the water heater to work according to the optimal matching parameters.
2. The control method of the gas water heater adaptable to different altitudes as claimed in claim 1, characterized in that: when the current value of the proportional valve of the water heater is fixed, the rotating speed of the fan of the water heater is increased along with the rise of the altitude and is reduced along with the reduction of the altitude.
3. The control method of the gas water heater adaptable to different altitudes as claimed in claim 1, characterized in that: the calculated heat of combustion is subtracted from the actual heat of combustion, the difference corresponding to different altitudes.
4. The control method of the gas water heater adaptable to different altitudes as claimed in claim 3, characterized in that: when the difference is 0, the altitude of the water heater is 0.
5. The control method of the gas water heater adaptable to different altitudes as claimed in any one of claims 1 to 4, wherein: the water heater calculates and judges the fan voltage, the fan current and the proportional valve current value of the optimal heat load state of the water heater corresponding to the altitude, and stores the fan voltage, the fan current and the proportional valve current value, so that the water heater works according to the parameters when working.
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