CN209926582U - Gas water heater - Google Patents
Gas water heater Download PDFInfo
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- CN209926582U CN209926582U CN201821876580.0U CN201821876580U CN209926582U CN 209926582 U CN209926582 U CN 209926582U CN 201821876580 U CN201821876580 U CN 201821876580U CN 209926582 U CN209926582 U CN 209926582U
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Abstract
The utility model discloses a gas water heater. The gas water heater comprises a water inlet temperature detection device, a water outlet temperature detection device, a water flow detection device, a sampling input device and a control device. The water inlet temperature detection device is used for detecting the water inlet temperature of the gas water heater; the outlet water temperature detection device is used for detecting the outlet water temperature of the gas water heater; the water flow detection device is used for detecting the water flow rate entering the gas water heater; the sampling input device is used for acquiring an automatic sampling instruction of the gas water heater; and the control device is used for controlling the opening of a gas proportional valve of the gas water heater according to the water inlet temperature, the water outlet temperature and the water flow rate after receiving the automatic sampling instruction. Above-mentioned gas heater can improve gas heater's control accuracy to can make gas heater's burning more abundant, the heat production is efficient, and the waste gas volume of production is few, and the security of operation is high.
Description
Technical Field
The utility model relates to a water heater technical field, more specifically say, relate to a gas heater.
Background
In the related art, the gas water heater uses gas as fuel, and the combustion heat required by the gas water heater during water supply is controlled by controlling the gas flow introduced into the gas water heater. Because the sources of the fuel gas supplied to the fuel gas water heater are biased to be diversified, and the component difference of the fuel gas is relatively large, the technical problems of incomplete combustion, vibration combustion, high exhaust emission rate and the like of the water heater are easily caused. Meanwhile, structural elements of a plurality of gas water heaters of the same type have small differences, so that working data detected by the gas water heaters have differences, and therefore the control accuracy of the gas water heaters in the related art is poor.
SUMMERY OF THE UTILITY MODEL
The utility model discloses embodiment provides a gas heater.
The utility model discloses embodiment's gas heater includes:
a gas proportional valve;
the water inlet temperature detection device is arranged at a water inlet pipe of the gas water heater and is used for detecting the water inlet temperature of the gas water heater;
the outlet water temperature detection device is arranged on a water outlet pipe of the gas water heater and is used for detecting the outlet water temperature of the gas water heater;
water flow detection means for detecting a water flow rate into the gas water heater;
the sampling input device is used for acquiring an automatic sampling instruction of the gas water heater;
the control device is connected with the water inlet temperature detection device, the water outlet temperature detection device, the water flow detection device and the sampling input device;
and the control device is used for controlling the opening degree of the gas proportional valve according to the water inlet temperature, the water outlet temperature and the water flow rate after receiving the automatic sampling instruction.
Above-mentioned gas heater, when receiving automatic sampling instruction, according to the aperture of temperature of intaking, leaving water temperature and water flow rate control gas proportional valve, can improve gas heater's control accuracy to can make gas heater's burning more abundant, the heat production is efficient, and the waste gas volume of production is few, and the security of operation is high.
In some embodiments, the control device is configured to obtain a corrected hot water yield according to an automatic sampling instruction of the gas water heater, where the corrected hot water yield is determined by an inlet water temperature, an outlet water temperature, and a water flow rate of the gas water heater; the system comprises a gas water heater, a water inlet pipe, a water outlet pipe and a water outlet pipe, wherein the gas water heater is used for supplying water to the water inlet; and the difference value of the current hot water yield of the gas water heater and the corrected hot water yield of the gas water heater is calculated, and the opening of the gas proportional valve is controlled according to the difference value.
In certain embodiments, the gas water heater includes an alarm device, the alarm device being connected to the control device; the control device is used for judging whether the absolute value of the difference value is larger than a first preset value or not; and when the absolute value of the difference is larger than the first preset value, the control device is used for controlling the alarm device to send alarm information and/or controlling the gas water heater to stop running.
In some embodiments, the control device is configured to determine whether an absolute value of the difference is greater than or equal to a second preset value; and the gas proportional valve is used for adjusting the opening of the gas proportional valve when the absolute value of the difference value is greater than or equal to the second preset value.
In some embodiments, the control device is configured to determine whether the difference is greater than zero; when the difference value is larger than zero, the opening degree of a gas proportional valve of the gas water heater is reduced; and when the difference is less than zero, the opening degree of a gas proportional valve of the gas water heater is increased.
In some embodiments, the control device is configured to calculate a temperature difference between a current inlet water temperature and a current outlet water temperature of the gas water heater; and calculating the product of the temperature difference and the current water flow rate of the gas water heater to obtain the current hot water yield of the gas water heater.
In certain embodiments, the gas water heater includes a burner, and the gas proportional valve is connected to the burner.
In some embodiments, the gas water heater includes a heating pipe, the heating pipe communicates with the water inlet pipe and the water outlet pipe, and the burner is configured to heat the heating pipe so that the heating pipe heats water entering from the water inlet pipe.
In some embodiments, the gas water heater includes a temperature limiting device disposed on the heating tube, the temperature limiting device configured to limit a temperature of the heating tube.
In certain embodiments, the gas water heater includes a burner, a smoke cage and a smoke exhaust passage connected to the smoke cage, the gas proportional valve is connected to the burner, and the smoke cage is disposed above the burner and is used for collecting smoke generated by the burner when burning and discharging the smoke through the smoke exhaust passage.
Additional aspects and advantages of embodiments of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of embodiments of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a schematic structural diagram of a gas water heater according to an embodiment of the present invention;
FIG. 2 is another schematic structural diagram of a gas water heater according to an embodiment of the present invention;
FIG. 3 is a schematic view of another structure of a gas water heater according to an embodiment of the present invention;
FIG. 4 is a block schematic diagram of a gas water heater according to an embodiment of the present invention;
fig. 5 is a flow chart of the automatic sampling program operation of the gas water heater according to the embodiment of the present invention;
FIG. 6 is a graph of gas proportional valve opening versus hot water production for a prior art gas water heater.
Fig. 7 is a graph of the relationship between the opening degree and the hot water yield of the gas proportional valve of the gas water heater of the prior art and the gas water heater of the embodiment of the present invention.
Fig. 8 is another graph of the relationship between the opening degree and the hot water yield of the gas proportional valve of the gas water heater of the prior art and the gas water heater of the embodiment of the present invention.
Fig. 9 is another flowchart of a control method of a gas water heater according to an embodiment of the present invention.
Fig. 10 is another graph showing the relationship between the opening degree of the gas proportional valve and the hot water production rate in the gas water heater according to the embodiment of the present invention.
Fig. 11 is a graph showing still another relationship between the opening degree of the gas proportional valve and the hot water production rate in the gas water heater according to the embodiment of the present invention.
Description of the main element symbols:
the system comprises a gas water heater 100, an inlet water temperature detection device 20, an outlet water temperature detection device 30, a water flow detection device 40, a sampling input device 50, a control device 60, an alarm device 70, a temperature limiting device 80, a water supply device 90, a water inlet pipe 110, a water outlet pipe 120, a burner 130, a gas proportional valve 140, a heating pipe 170, a smoke hood 150 and a smoke exhaust channel 160.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.
In the description of the embodiments of the present invention, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the embodiments of the present invention, "a plurality" means two or more unless specifically limited otherwise.
In the description of the embodiments of the present invention, it should be noted that, unless explicitly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the embodiments of the present invention can be understood by those of ordinary skill in the art according to specific situations.
In embodiments of the invention, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise direct contact between the first and second features through another feature not in direct contact. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
The following disclosure provides many different embodiments or examples for implementing different configurations of embodiments of the invention. In order to simplify the disclosure of embodiments of the present invention, the components and arrangements of specific examples are described below. Of course, they are merely examples and are not intended to limit the present invention. Furthermore, embodiments of the present invention may repeat reference numerals and/or reference letters in the various examples, which have been repeated for purposes of simplicity and clarity and do not in themselves dictate a relationship between the various embodiments and/or arrangements discussed. In addition, embodiments of the present invention provide examples of various specific processes and materials, but one of ordinary skill in the art may recognize applications of other processes and/or use of other materials.
Referring to fig. 1 to 4, a gas water heater 100 according to an embodiment of the present invention includes a gas proportional valve 140, an inlet water temperature detecting device 20, an outlet water temperature detecting device 30, a water flow detecting device 40, a sampling input device 50, and a control device 60. The control device 60 is connected to the inlet water temperature detecting device 20, the outlet water temperature detecting device 30, the water flow detecting device 40 and the sampling input device 50. The inlet water temperature detection device 20 is disposed at the inlet pipe 110 of the gas water heater 100, and the inlet water temperature detection device 20 is used for detecting the inlet water temperature of the gas water heater 100. The outlet water temperature detection device 30 is disposed on the outlet pipe 120 of the gas water heater 100, and the outlet water temperature detection device 30 is used for detecting the outlet water temperature of the gas water heater 100. The water flow detection device 40 is used to detect the water flow rate into the gas water heater 100. The sampling input device 50 is used for acquiring an automatic sampling instruction of the gas water heater 100. The control device 60 is configured to control the opening degree of the gas proportional valve 140 according to the water inlet temperature, the water outlet temperature, and the water flow rate after receiving the automatic sampling instruction.
After receiving the automatic sampling instruction, the gas water heater 100 controls the opening of the gas proportional valve 140 of the gas water heater 100 according to the water inlet temperature, the water outlet temperature and the water flow rate, so that the control precision of the gas water heater 100 can be improved, the gas water heater 100 can burn more sufficiently, the heat production efficiency is high, the amount of generated waste gas is small, and the operation safety is high.
It should be noted that the sample input device 50 according to the embodiment of the present invention may be installed on the gas water heater 100 or at another position outside the gas water heater 100.
Referring to FIG. 1, in certain embodiments, a gas water heater 100 includes a burner 130. The gas proportional valve 140 is connected to the burner 130, the control device 60 is configured to control the opening degree of the gas proportional valve 140, and the flow rate of the gas introduced into the gas water heater 100 is increased as the opening degree of the gas proportional valve 140 is increased.
In some embodiments, the control device 60 is configured to obtain a corrected hot water yield according to the automatic sampling instruction of the gas water heater 100, where the corrected hot water yield is determined by the inlet water temperature, the outlet water temperature, and the water flow rate of the gas water heater 100. The control device 60 is configured to determine the current hot water yield of the gas water heater 100 according to the current water inlet temperature of the gas water heater 100, the current water outlet temperature of the gas water heater 100, and the current water flow rate of the gas water heater 100. The control device 60 is used for calculating the difference between the current hot water yield of the gas water heater 100 and the corrected hot water yield of the gas water heater 100 and controlling the opening of the gas proportional valve 140 according to the difference.
Therefore, the corrected hot water yield is obtained through the automatic sampling instruction according to the gas water heater 100, and the opening degree of the gas proportional valve 140 of the gas water heater 100 is controlled according to the difference value between the current hot water yield of the gas water heater 100 and the corrected hot water yield of the gas water heater 100, so that the control precision of the gas water heater 100 can be improved, the gas water heater 100 can be combusted more fully, the heat production efficiency is high, the generated waste gas amount is less, and the running safety is high.
It should be noted that the corrected hot water yield may be determined by the manufacturer according to the data detected by each gas water heater 100, or after the parts of the gas water heater 100 are replaced, the user or the maintenance personnel presses the automatic sampling button of the sampling input device 50 to generate an automatic sampling command, so as to update the corrected hot water yield. In this way, the corrected hot water yield may be tailored to the actual conditions of the individual gas water heater 100.
Referring to fig. 5, the user can start the automatic sampling program of the gas water heater 100 at the sampling input device 50, the control device 60 can control the opening P of the gas proportional valve 140 of the gas water heater 100 according to the automatic sampling command of the gas water heater 100, detect the temperature difference T and the water flow rate Qw between the water inlet temperature T1 and the water outlet temperature T2 of the gas water heater 100, and establish the data function relationship Co _ n of the corrected hot water yield of the gas water heater 100 as f (T, Qw), so as to obtain the corrected hot water yield Co _ n of the gas water heater 100, and finally, the automatic sampling program is ended.
It should be noted that some or all of the functions of the control device 60 according to the embodiment of the present invention may be implemented by the controller, processor, control board, or computer board of the gas water heater 100 itself, or the control device 60 is made into a separate control box or control terminal including the controller, processor, control board, or computer board and installed on the gas water heater 100, or installed at another position outside the gas water heater 100.
Specifically, in the prior art, the standard hot water yield of the gas water heater of the same model is the same, the standard hot water yield Co of the gas water heater can be understood as the hot water yield of the gas water heater detected in the case of using the standard gas for gas combustion, please refer to fig. 6, the opening degrees of the gas proportional valves and the standard hot water yield of the gas water heater are in a one-to-one correspondence relationship, and the straight line L1(Po) represents the standard hot water yield of the gas water heater obtained under different opening degrees of the gas proportional valves, for example, the standard hot water yield of the gas water heater corresponding to the predetermined opening degree Po of the gas proportional valve 140 is Co. That is, the gas water heaters 100 of the same model are all operated according to the relationship curve between the opening degree of the gas proportional valve and the standard hot water yield of fig. 6 when they are shipped.
However, due to differences in the data detected by the water inlet temperature detecting device 20, the water outlet temperature detecting device 30, and the water flow detecting device 40 of each gas water heater 100, the standard hot water yield detected by each gas water heater 100 under the same opening degree of the gas proportional valve 140 is different, so that a large error exists in calculation using the standard hot water yield, and the control accuracy of the gas water heater 100 is low.
Therefore, in the present embodiment, the automatic sampling program installed on each gas water heater 100 may be started, and the gas water heater 100 may obtain a plurality of data sets of the gas water heater 100 according to the automatic sampling instruction of the gas water heater 100, and determine the corrected hot water yield of the gas water heater 100 according to the plurality of data sets. That is, each gas water heater 100 corresponds to a corrected hot water yield, and the data calculation is performed according to the standard hot water yield based on the corrected hot water yield, so that the control accuracy of the gas water heater 100 can be improved.
The corrected hot water yield of the gas water heater 100 according to the present embodiment may be understood as that, a standard gas is introduced into each gas water heater 100 to operate the gas water heater 100, a plurality of data sets detected by the gas water heater 100 are recorded, the data sets include an inlet water temperature, an outlet water temperature, and a water flow rate of the gas water heater 100, and the control device 60 obtains the corrected hot water yield of the gas water heater 100 according to a data model formed by the plurality of data sets.
Referring to fig. 7, a straight line L1(Po) represents the standard hot water yield of the gas water heater obtained by all water heaters of the same type under different opening degrees of the gas proportional valve in the prior art, for example, the standard hot water yield of the gas water heater corresponding to the predetermined opening degree Po of the gas proportional valve is Co. The straight line L3(Po1) represents the corrected hot water yield of the gas water heater obtained by each gas water heater according to the embodiment of the present invention at different opening degrees of the gas proportional valve 140, for example, the corrected hot water yield of the gas water heater corresponding to the predetermined opening degree Po1 of the gas proportional valve 140 is Co _ n.
It should be noted that the straight line L3(Po1) may be understood that when the automatic sampling program of the gas water heater 100 is started, the obtained data analysis results that the hot water yield of the gas water heater 100 is lower than the value of the standard hot water yield preset and specified by the model of the gas water heater 100, and therefore, in the present embodiment, the reference value of the hot water yield of the gas water heater 100 needs to be adjusted, for example, in one embodiment, the corrected hot water yield of the gas water heater 100 corresponding to the predetermined opening Po1 of the gas proportional valve 140 of the present embodiment is set as Co _ n, and the standard hot water yield with Co _ n as the reference is subjected to data calculation.
Referring to fig. 8, a straight line L1(Po) represents the standard hot water yield of the gas water heater obtained by all water heaters of the same type under different opening degrees of the gas proportional valve in the prior art, for example, the standard hot water yield of the gas water heater corresponding to the predetermined opening degree Po of the gas proportional valve is Co. The straight line L5(Po2) represents the corrected hot water yield of the gas water heater 100 obtained by each gas water heater 100 according to the embodiment of the present invention at different opening degrees of the gas proportional valve 140, for example, the corrected hot water yield of the gas water heater 100 corresponding to the predetermined opening degree Po1 of the gas proportional valve 140 is Co _ n.
It should be noted that the straight line L5(Po2) may be understood that when the automatic sampling program of the gas water heater 100 is started, the obtained multiple sets of data are analyzed to obtain that the hot water yield of the gas water heater 100 is higher than the value of the standard hot water yield preset and specified by the model of the gas water heater 100, and therefore, in the present embodiment, the reference value of the hot water yield of the gas water heater 100 needs to be adjusted, for example, in one embodiment, the corrected hot water yield of the gas water heater 100 corresponding to the predetermined opening Po2 of the gas proportional valve 140 of the present embodiment is set to be Co _ n, and the standard hot water yield with Co _ n as the reference is subjected to data calculation.
In some embodiments, the control device 60 is configured to calculate a temperature difference between a current inlet water temperature and a current outlet water temperature of the gas water heater 100; and calculating the product of the temperature difference and the current water flow rate of the gas water heater 100 to obtain the current hot water yield of the gas water heater 100. In this way, the current hot water production rate of the gas water heater 100 can be accurately obtained.
Specifically, in one embodiment, the current inlet water temperature of the gas water heater 100 is T1, the current outlet water temperature of the gas water heater 100 is T2, and the current water flow rate of the gas water heater 100 is Qw, then the temperature difference between the current inlet water temperature T1 of the gas water heater 100 and the current outlet water temperature T2 of the gas water heater 100 is: and delta T is T2-T1. The current hot water yield of the gas water heater 100 is: c1 ═ (T2-T1) × Qw.
It should be noted that the hot water yield of the gas water heater 100 is a parameter reflecting the efficiency of converting the heat of gas combustion into hot water, and can be used to characterize the combustion sufficiency of the gas. Specifically, the more complete the gas combustion, the higher the conversion rate of hot water; conversely, the lower the conversion of hot water. The calculation of the current hot water production rate of the gas water heater 100 is only one example, and is not particularly limited as long as the calculation method of the efficiency of converting the heat quantity used for characterizing the gas combustion into the hot water can be used.
Referring to fig. 4, in some embodiments, the gas water heater 100 includes an alarm device 70, and the alarm device 70 is connected to the control device 60; the control device 60 is configured to determine whether an absolute value of the difference is greater than a first preset value; when the absolute value of the difference is greater than the first preset value, the control device 60 is used for controlling the alarm device 70 to send out alarm information and/or controlling the gas water heater 100 to stop operating.
Therefore, when the absolute value of the difference value is greater than the first preset value, the gas water heater 100 is controlled to send alarm information, so that a user can timely acquire the abnormal condition of the gas water heater 100, and the gas water heater 100 can automatically stop running when the abnormal condition occurs, so that the safety of the gas water heater 100 can be improved.
In one embodiment, when the absolute value of the difference is greater than the first preset value, the gas water heater 100 is controlled to send out an alarm message and the gas water heater 100 is controlled to stop running. In another embodiment, when the absolute value of the difference is greater than the first preset value, the gas water heater 100 is controlled to send out alarm information. In yet another embodiment, the gas water heater 100 is controlled to stop operating when the absolute value of the difference is greater than the first preset value.
Specifically, when the absolute value of the difference is greater than the first preset value, it indicates that the gas water heater 100 is most likely to have an abnormal condition and abnormal combustion data, and at this time, the power supply of the gas water heater 100 may be cut off, and the alarm device 70 sends a siren alarm sound. Or the control device 60 controls the water supply device 90 to cut off the water supply of the gas water heater 100, and the alarm device 70 flickers the dazzling light. Alternatively, the control device 60 controls the gas unit 60 to shut off the input of gas to the gas water heater 100, and the alarm device 70 sounds a siren alarm and blinks a glaring light. It should be noted that the alarm information and the manner of controlling the gas water heater 100 to stop operating are not limited herein, and may be set according to actual requirements.
In some embodiments, the control device 60 is configured to determine whether the absolute value of the difference is greater than or equal to a second preset value; when the absolute value of the difference is greater than or equal to a second preset value, the opening degree of the gas proportional valve 140 is adjusted
Thus, the working state of the gas water heater 100 is adjusted by comparing the difference between the current hot water yield of the gas water heater 100 and the corrected hot water yield of the gas water heater 100, so that the gas water heater 100 is more fully combusted and the heat generation efficiency is high.
It should be noted that, in the present embodiment, the second preset value is smaller than the first preset value.
Specifically, when the difference between the current hot water yield of the gas water heater 100 and the corrected hot water yield of the gas water heater 100 is smaller than the second preset value, it indicates that the gas water heater 100 is working normally and burning is sufficient, and the opening of the gas proportional valve 140 of the gas water heater 100 does not need to be adjusted. When the difference between the current hot water yield of the gas water heater 100 and the corrected hot water yield of the gas water heater 100 is greater than or equal to the second preset value, it indicates that the gas combustion rate needs to be micro-regulated, that is, the opening of the gas proportional valve 140 needs to be adjusted to make the gas content in the combustion water heater proper, so as to ensure the normal combustion in the gas water heater 100, so that the water heater is in a safe working state, and incomplete combustion and vibration combustion caused by the bias of gas cost are avoided.
In some embodiments, control device 60 is configured to determine whether the difference is greater than zero; when the difference is greater than zero, the opening degree of the gas proportional valve 140 of the gas water heater 100 is reduced; and when the difference value is less than zero, the opening degree of the gas proportional valve 140 of the gas water heater 100 is increased.
Thus, the opening of the gas proportional valve 140 of the gas water heater 100 is controlled by comparing the difference between the current hot water yield of the gas water heater 100 and the corrected hot water yield of the gas water heater 100, so that the gas of the gas water heater 100 is fully mixed with the air in a proper proportion, the stability of gas components is ensured, the water heater is in a safe working state, and incomplete combustion and vibration combustion caused by different gas costs are avoided.
Specifically, when the difference between the current hot water yield of the gas water heater 100 and the corrected hot water yield of the gas water heater 100 is greater than zero, it indicates that the hot water yield of the gas water heater 100 is too high, that is, the gas content in the gas water heater 100 is high, and the air content is insufficient, at this time, the opening degree of the gas proportional valve 140 of the gas water heater 100 needs to be reduced to reduce the gas content introduced into the gas water heater 100, so as to promote the gas to be fully mixed with the air with a proper proportion, ensure the stability of the gas components, enable the gas water heater 100 to be in a safe working state, and avoid incomplete combustion caused by the bias of the gas cost.
When the difference between the current hot water yield of the gas water heater 100 and the corrected hot water yield of the gas water heater 100 is less than zero, it indicates that the hot water yield of the gas water heater 100 is too low, that is, the gas content in the gas water heater 100 is low, and the air content is high, at this time, the opening degree of the gas proportional valve 140 of the gas water heater 100 needs to be increased to introduce more gas content, so as to avoid the occurrence of shock combustion due to the high air content of the gas water heater 100.
In an embodiment, referring to fig. 9, the first preset value may be set to e1, the second preset value may be set to e2, the gas proportional opening of the gas water heater 100 is P, the current water inlet temperature of the gas water heater 100 is T1, the current water outlet temperature of the gas water heater 100 is T2, the current water flow rate of the gas water heater 100 is Qw, the calculated current hot water yield of the gas water heater 100 is C1 ═ T2-T1 × Qw, the corrected hot water yield of the gas water heater 100 corresponding to the gas proportional opening of the gas water heater 100 that is obtained by starting the automatic sampling procedure of the gas water heater 100 when the gas proportional opening of the gas water heater 100 is Po1 is Co _ n, and the difference between the current hot water yield of the gas water heater 100 and the corrected hot water yield of the gas water heater 100 is dC.
And when the | dC | is greater than e1, controlling the gas water heater 100 to give an alarm and/or controlling the gas water heater 100 to stop running.
And when the | dC | is less than e2, controlling the gas water heater 100 to continue normal operation.
When e2 ≦ dC ≦ e1, it is further determined whether the difference dC is less than 0.
Referring to fig. 10, a straight line L3(Po1) represents the corrected hot water yield of the gas water heater 100 obtained by each gas water heater 100 according to the embodiment of the present invention under different opening degrees of the gas proportional valve 140, for example, the corrected hot water yield of the gas water heater 100 corresponding to the predetermined opening degree Po1 of the gas proportional valve 140 is Co _ n. The straight line L7(P1) represents the resulting current hot water production rate relationship for the gas water heater 100 at the current gas proportional valve 140 opening of the gas water heater 100. When the opening degree of the gas proportional valve 140 at the point P1 of the straight line L7(P1) is the same as the opening degree of the gas proportional valve 140 at the point Po1 of the straight line L3(Po1), the current hot water yield of the gas water heater 100 is C1, and when the difference dC is smaller than 0, that is, when the opening degree of the gas proportional valve 140 of the same gas water heater 100 is smaller, the current hot water yield of the gas water heater 100 is C1, which is smaller than the corrected hot water yield of the gas water heater 100, which is Co — n, at this time, the opening degree of the gas proportional valve 140 of the gas water heater 100 needs to be increased accordingly, and the opening degree P1 of the gas proportional valve 140 is increased to P2. Referring to fig. 11, a straight line L5(Po2) represents a corrected hot water yield of the gas water heater 100 obtained by each gas water heater 100 according to the embodiment of the present invention under different opening degrees of the gas proportional valve 140, for example, the corrected hot water yield of the gas water heater 100 corresponding to the predetermined opening degree Po2 of the gas proportional valve 140 is Co2, and a straight line L9(P2) represents a current hot water yield relationship of the gas water heater 100 obtained under the current opening degree of the gas proportional valve 140 of the gas water heater 100. When the opening degree of the gas proportional valve 140 at the point P2 of the straight line L9(P2) is the same as the opening degree of the gas proportional valve 140 at the point Po2 of the straight line L5(Po2), the current hot water yield of the gas water heater 100 is C2, and when the difference dC is greater than 0, that is, when the gas proportional opening value of the same gas water heater 100 is greater than the corrected hot water yield of the gas water heater 100, which is Co — n, the current hot water yield of the gas water heater 100 is C2, and at this time, the opening degree of the gas proportional valve 140 of the gas water heater 100 needs to be increased accordingly, and the opening degree of the gas proportional valve 140 is decreased from P2 to P1. Thus, by adjusting the opening of the gas proportional valve of the gas water heater 100 and promoting the gas to be fully mixed with the air with a proper proportion, the stability of the gas components is ensured, the water heater is in a safe working state, and incomplete combustion and vibration combustion caused by different gas costs are avoided.
Referring to fig. 1 and 2, in some embodiments, the gas water heater 100 includes a heating pipe 170, the heating pipe 170 is connected to the water inlet pipe 110 and the water outlet pipe 120, and the burner 130 is used for heating the heating pipe 170 so that the heating pipe 170 heats water entering from the water inlet pipe 110. Thus, the water entering from the water inlet pipe 110 can be rapidly heated, and the efficiency is high. Specifically, water flows from a water source into the inlet pipe 110, flows through the inlet pipe 110 into the heating pipe 170 and is heated in the heating pipe 170 to form hot water, which flows out via the outlet pipe 120 for use by a user.
In certain embodiments, the gas water heater 100 includes a temperature limiting device 80 disposed on the heating pipe 170, the temperature limiting device 80 being configured to limit the temperature of the heating pipe 170. Thus, the temperature limiting device 80 can avoid the danger caused by the overhigh water temperature.
Specifically, in the present embodiment, the limiting device 80 may be a temperature sensor, the temperature limiting device 80 is connected to the control device 60 and the burner 130, when the limiting device 80 detects that the temperature of the heating pipe 170 exceeds a preset maximum warning value, the limiting device 80 transmits data to the control device 60, and the control device 60 controls the burner 130 to stop heating, so as to prevent the heating pipe 170 from being in danger due to an excessively high temperature.
Referring to fig. 1 and 4, in some embodiments, the gas water heater 100 includes a water supply device 90, the water supply device 90 is connected to the water inlet pipe 110 and the water outlet pipe 120, and the water supply device 90 is used for controlling the input of cold water into the water inlet pipe 110 and the output of hot water out of the water outlet pipe 120. In this way, the water supply device 90 can realize rapid water supply to ensure that the cold water flowing into the gas water heater 100 and the hot water output are appropriate.
Referring to fig. 1 and 2, in certain embodiments, the gas water heater 100 includes a hood 150 and a flue gas duct 160 connected to the hood 150, the hood 150 being disposed above the burner 130 and configured to collect flue gas generated by the burner 130 during combustion and to exhaust the flue gas through the flue gas duct 160. Therefore, the danger caused by the gathering of the smoke is avoided, and the use safety of the gas water heater 100 is improved.
In the description of the present specification, reference to the description of the terms "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example" or "some examples" or the like means 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.
Any process or method descriptions in flow charts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more executable instructions for implementing specific logical functions or steps of the process, and the scope of the preferred embodiments of the present invention includes other implementations in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the embodiments of the present invention.
The logic and/or steps represented in the flowcharts or otherwise described herein, such as an ordered listing of executable instructions that can be considered to implement logical functions, can be embodied in any computer-readable medium for use by or in connection with an instruction execution system, apparatus, or device, such as a computer-based system, processing module-containing system, or other system that can fetch the instructions from the instruction execution system, apparatus, or device and execute the instructions. For the purposes of this description, a "computer-readable medium" can be any means that can contain, store, communicate, propagate, or transport the program for use by or in connection with the instruction execution system, apparatus, or device. More specific examples (a non-exhaustive list) of the computer-readable medium would include the following: an electrical connection having one or more wires (control method), a portable computer diskette (magnetic device), a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disc read-only memory (CDROM). Additionally, the computer-readable medium could even be paper or another suitable medium upon which the program is printed, as the program can be electronically captured, via for instance optical scanning of the paper or other medium, then compiled, interpreted or otherwise processed in a suitable manner if necessary, and then stored in a computer memory.
It should be understood that portions of embodiments of the present invention may be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, the various steps or methods may be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, any one or combination of the following techniques, which are known in the art, may be used: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application specific integrated circuit having an appropriate combinational logic gate circuit, a Programmable Gate Array (PGA), a Field Programmable Gate Array (FPGA), or the like.
It will be understood by those skilled in the art that all or part of the steps carried by the method for implementing the above embodiments may be implemented by hardware related to instructions of a program, which may be stored in a computer readable storage medium, and when the program is executed, the program includes one or a combination of the steps of the method embodiments.
In addition, each functional unit in the embodiments of the present invention may be integrated into one processing module, or each unit may exist alone physically, or two or more units are integrated into one module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode. The integrated module, if implemented in the form of a software functional module and sold or used as a stand-alone product, may also be stored in a computer readable storage medium.
The storage medium mentioned above may be a read-only memory, a magnetic or optical disk, etc.
While embodiments of the present invention have been shown and described, it is to be understood that the above embodiments are exemplary and not to be construed as limiting the present invention, and that variations, modifications, substitutions and alterations in the above embodiments may be made by those of ordinary skill in the art without departing from the scope of the present invention.
Claims (10)
1. A gas water heater, comprising:
a gas proportional valve;
the water inlet temperature detection device is arranged at a water inlet pipe of the gas water heater and is used for detecting the water inlet temperature of the gas water heater;
the outlet water temperature detection device is arranged on a water outlet pipe of the gas water heater and is used for detecting the outlet water temperature of the gas water heater;
water flow detection means for detecting a water flow rate into the gas water heater;
the sampling input device is used for acquiring an automatic sampling instruction of the gas water heater;
the control device is connected with the water inlet temperature detection device, the water outlet temperature detection device, the water flow detection device and the sampling input device;
and the control device is used for controlling the opening degree of the gas proportional valve according to the water inlet temperature, the water outlet temperature and the water flow rate after receiving the automatic sampling instruction.
2. The gas water heater of claim 1, wherein the control device is configured to obtain a modified hot water yield according to an automatic sampling instruction of the gas water heater, the modified hot water yield being determined by an inlet water temperature, an outlet water temperature, and a water flow rate of the gas water heater; the system comprises a gas water heater, a water inlet pipe, a water outlet pipe and a water outlet pipe, wherein the gas water heater is used for supplying water to the water inlet; and the difference value of the current hot water yield of the gas water heater and the corrected hot water yield of the gas water heater is calculated, and the opening of the gas proportional valve is controlled according to the difference value.
3. The gas water heater of claim 2, including an alarm device, said alarm device being connected to said control device; the control device is used for judging whether the absolute value of the difference value is larger than a first preset value or not; and when the absolute value of the difference is larger than the first preset value, the control device is used for controlling the alarm device to send alarm information and/or controlling the gas water heater to stop running.
4. The gas water heater of claim 2, wherein said control means is adapted to determine whether an absolute value of said difference is greater than or equal to a second predetermined value; and the gas proportional valve is used for adjusting the opening of the gas proportional valve when the absolute value of the difference value is greater than or equal to the second preset value.
5. The gas water heater of claim 4, wherein said control means is for determining if said difference is greater than zero; when the difference value is larger than zero, the opening degree of the gas proportional valve is reduced; and when the difference value is less than zero, the opening degree of the gas proportional valve is increased.
6. The gas water heater of claim 2, wherein said control means is adapted to calculate a temperature difference between a current inlet water temperature and a current outlet water temperature of said gas water heater; and calculating the product of the temperature difference and the current water flow rate of the gas water heater to obtain the current hot water yield of the gas water heater.
7. The gas water heater of claim 1, including a burner, said gas proportional valve being connected to said burner.
8. The gas water heater of claim 7, including a heating tube communicating between the inlet tube and the outlet tube, the burner being adapted to heat the heating tube so that the heating tube heats water entering through the inlet tube.
9. The gas water heater of claim 8, including a temperature limiting device disposed on the heating tube, the temperature limiting device for limiting the temperature of the heating tube.
10. The gas water heater of claim 1, including a burner, a hood and a smoke exhaust path connecting the hood, the gas proportional valve being connected to the burner, the hood being disposed above the burner and being adapted to collect smoke generated by the burner when burned and to exhaust the smoke exhaust path.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821876580.0U CN209926582U (en) | 2018-11-14 | 2018-11-14 | Gas water heater |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201821876580.0U CN209926582U (en) | 2018-11-14 | 2018-11-14 | Gas water heater |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111426070A (en) * | 2020-05-21 | 2020-07-17 | 珠海格力电器股份有限公司 | Wall-mounted furnace smoke tube detection method and device and wall-mounted furnace |
| WO2021213532A1 (en) * | 2020-04-20 | 2021-10-28 | 芜湖美的厨卫电器制造有限公司 | Control method for gas water heater, gas water heater, and computer readable storage medium |
-
2018
- 2018-11-14 CN CN201821876580.0U patent/CN209926582U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021213532A1 (en) * | 2020-04-20 | 2021-10-28 | 芜湖美的厨卫电器制造有限公司 | Control method for gas water heater, gas water heater, and computer readable storage medium |
| CN111426070A (en) * | 2020-05-21 | 2020-07-17 | 珠海格力电器股份有限公司 | Wall-mounted furnace smoke tube detection method and device and wall-mounted furnace |
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Effective date of registration: 20220919 Address after: 241000 west side of 3 / F, No.5 office building, new energy and new materials gathering area, Fuzhou Road, Jiangbei District, Wuhu City, Anhui Province Patentee after: Wuhu Midea intelligent kitchen electricity Manufacturing Co.,Ltd. Address before: 241009 Wan Chun East Road, East District, Wuhu economic and Technological Development Zone, Anhui Patentee before: WUHU MIDEA KITCHEN AND BATH APPLIANCES MFG. Co.,Ltd. |
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