Gas water heater, air supplement control method and device thereof, storage medium and product

Abstract

The invention relates to the field of gas water heaters, and discloses a gas water heater and an air supplement control method and device thereof, a storage medium and a product. The method comprises the steps that when a draught fan operates, the current current value of the draught fan is obtained; based on the current current value of the fan and the target wind speed, the blockage level under the current working condition is determined; based on the target air speed and the blockage level under the current working condition, an air supplement air speed interval is determined; determining the air supplement speed based on the air supplement speed interval and the current current value; and based on the air supplementing speed, the running air speed of the draught fan is corrected, and the draught fan is controlled to run at the corrected running air speed. Thus, according to the gas water heater, the current actual current value is detected to achieve automatic air supplementation when air exhaust blockage occurs, stepless adjustment is conducted on the air supplementation speed based on the actual current value, the target air speed and the blockage level under the current working condition, the air supplementation speed is made to be matched with the current working condition, the air supplementation precision is improved, and the user experience is improved. And sufficient combustion of fuel gas is promoted.

Description

Technical Field

[0001] The present application relates to gas water heaters, and particularly to a gas water heater and its air supply compensation control method, device, storage medium, and product. Background Art

[0002] When a gas water heater operates, it is necessary to control the blower to maintain ventilation so that the gas burns sufficiently. However, due to the uncertainties of the actual installation environment and external environmental conditions of the gas water heater, such as a too long connected exhaust pipe or strong wind outside, these uncertain conditions may lead to excessive wind resistance, resulting in insufficient gas combustion, and the flue gas discharged by the gas water heater exceeding the relevant flue gas emission standard requirements. Even backdraft may occur, posing serious safety hazards.

[0003] To solve the problem of insufficient gas combustion caused by exhaust blockage, when exhaust blockage occurs, air supply compensation is usually used to increase the actual wind speed of the exhaust. In the related art, after determining the occurrence of exhaust blockage, the wind speed of the blower is usually increased by switching to a high wind gear or automatically compensating air supply based on different fixed air supply compensation amounts. However, whether it is by the method of wind gear switching or the method of automatically compensating air supply based on a fixed air supply compensation amount, due to insufficient air supply compensation accuracy, there are problems that the air supply compensation amount does not match the actual working conditions, resulting in a situation where the air supply compensation amount is too small and the gas combustion efficiency still needs to be improved, or the air supply compensation amount is too large, causing unnecessary energy consumption and excessive noise. Summary of the Invention

[0004] In view of this, embodiments of the present application provide a gas water heater and its air supply compensation control method, device, storage medium, and product, aiming to improve the air supply compensation accuracy when the gas water heater has exhaust blockage.

[0005] The technical solution of the embodiments of the present application is implemented as follows: In a first aspect, embodiments of the present application provide an air supply compensation control method for a gas water heater. The gas water heater includes a blower for promoting gas combustion. The method includes: When the blower is operating, obtain the current current value of the blower; Based on the current current value of the blower and the target wind speed, determine the blockage level under the current working condition; Based on the target wind speed and the blockage level under the current working condition, determine the air supply compensation wind speed range; Based on the air supply compensation wind speed range and the current current value, determine the air supply compensation wind speed; Based on the air supply compensation wind speed, correct the operating wind speed of the blower, and control the blower to operate at the corrected operating wind speed.

[0006] In some embodiments, before obtaining the current current value of the blower, the method further includes: Determining an error compensation wind speed based on the target wind speed of the blower and a preset first mapping relationship; Determining the operating wind speed of the blower based on the target wind speed and the error compensation wind speed, and controlling the blower to operate at the operating wind speed; Wherein, the first mapping relationship represents the mapping relationship between the target wind speed and the error compensation wind speed.

[0007] In some embodiments, before determining the error compensation wind speed, the method further includes: Obtaining the amount of gas required for the operation of the gas water heater; Determining the target wind speed of the blower based on the amount of gas and a preset second mapping relationship; Wherein, the second mapping relationship represents the mapping relationship between the target wind speed and the amount of gas.

[0008] In some embodiments, the determining the blockage level under the current working condition based on the current current value and the target wind speed of the blower includes: Determining the standard current value corresponding to the target wind speed under each working condition based on a preset third mapping relationship; Comparing the current current value with each of the standard current values to determine the blockage level under the current working condition; Wherein, the third mapping relationship represents the mapping relationship between the target wind speed and the standard current value under the non-blockage working condition and each blockage level working condition.

[0009] In some embodiments, the comparing the current current value with each of the standard current values to determine the blockage level under the current working condition includes: Taking each standard current value as an interval threshold to obtain a plurality of continuous current value intervals; Determining the blockage level under the current working condition based on the current value interval in which the current current value falls.

[0010] In some embodiments, the determining the make-up air speed interval based on the target wind speed and the blockage level under the current working condition includes: Determining a corresponding preset fourth mapping relationship based on the blockage level under the current working condition; Determining the make-up air speed interval based on the target wind speed and the determined fourth mapping relationship; Wherein, the fourth mapping relationship represents the mapping relationship between the target wind speed and the make-up air speed interval under each blockage level working condition.

[0011] In some embodiments, determining the make-up air velocity based on the make-up air velocity range and the current current value includes: Establish a mapping relationship based on the range of the make-up air velocity range and the range of the current value corresponding to the blockage level, and obtain a fifth mapping relationship characterizing the mapping relationship between the make-up air velocity and the current value of the fan; Determine the make-up air velocity based on the current current value and the fifth mapping relationship.

[0012] In some embodiments, the method further includes: Under the non-blocked working condition, control the fan to operate at multiple set wind speeds and obtain the corresponding current sampling values; Based on the third mapping relationship corresponding to the non-blocked working condition, determine the standard current value corresponding to each set wind speed; Determine the first mapping relationship based on the deviation value between the current sampling value corresponding to each set wind speed and the standard current value; Wherein, the third mapping relationship characterizes the mapping relationship between the target wind speed and the standard current value of the fan under the non-blocked working condition.

[0013] In a second aspect, an embodiment of the present application provides a make-up air control device for a gas water heater. The gas water heater includes a fan for promoting gas combustion. The device includes: An acquisition module, configured to acquire the current current value of the fan when the fan is operating; A first determination module, configured to determine the blockage level under the current working condition based on the current current value of the fan and the target wind speed; A second determination module, configured to determine the make-up air velocity range based on the target wind speed and the blockage level under the current working condition; A third determination module, configured to determine the make-up air velocity based on the make-up air velocity range and the current current value; A control module, configured to correct the operating wind speed of the fan based on the make-up air velocity and control the fan to operate at the corrected operating wind speed.

[0014] In a third aspect, an embodiment of the present application provides a gas water heater, including a fan for promoting gas combustion. The gas water heater further includes: a processor and a memory for storing a computer program that can run on the processor. Among them, The processor is configured to execute the steps of the method as described in the first aspect when running the computer program.

[0015] In a fourth aspect, an embodiment of the present application provides a storage medium, on which a computer program is stored. When the computer program is executed by a controller, the steps of the method as described in the first aspect are implemented.

[0016] In a fifth aspect, an embodiment of the present application provides a computer program product, including a computer program, which when executed by a controller, implements the steps of the method described in the first aspect.

[0017] In the technical solution provided by the embodiment of the present application, the gas water heater includes a blower for promoting gas combustion; when the blower is operating, the current value of the blower is acquired; based on the current value of the blower and the target wind speed, the blockage level under the current working condition is determined; based on the target wind speed and the blockage level under the current working condition, the make-up air speed interval is determined; based on the make-up air speed interval and the current current value, the make-up air speed is determined; based on the make-up air speed, the operating wind speed of the blower is corrected, and the blower is controlled to operate at the corrected operating wind speed. In this way, the gas water heater in the embodiment of the present application realizes automatic make-up air when an exhaust blockage occurs by detecting the current actual current value, and steplessly adjusts the make-up air speed based on the actual current value, target wind speed and blockage level under the current working condition, so that the make-up air speed matches the current working condition, improves the make-up air accuracy, and promotes full combustion of the gas. Description of the Drawings

[0018] Figure 1 It is a schematic flowchart of the make-up air control method for the gas water heater in the embodiment of the present application; Figure 2 It is a schematic diagram of the third mapping relationship in an application example of the present application; Figure 3 It is a schematic structural diagram of the make-up air control device for the gas water heater in the embodiment of the present application; Figure 4 It is a schematic structural diagram of the gas water heater in the embodiment of the present application. Detailed Embodiments

[0019] The present application will be further described in detail below with reference to the drawings and embodiments.

[0020] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which this application belongs. The terms used in the specification of this application herein are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0021] An embodiment of the present application provides a make-up air control method for a gas water heater. The gas water heater includes a blower for promoting gas combustion, as Figure 1 shown, the method includes: Step 101, when the blower is operating, acquire the current value of the blower.

[0022] Step 102, based on the current value of the blower and the target wind speed, determine the blockage level under the current working condition.

[0023] Step 103: Determine the make-up air velocity range based on the target wind speed and the blockage level under the current working condition.

[0024] Step 104: Determine the make-up air velocity based on the make-up air velocity range and the current current value.

[0025] Step 105: Correct the operating wind speed of the fan based on the make-up air velocity, and control the fan to operate at the corrected operating wind speed.

[0026] Here, the fan in the embodiment of the present application can be a DC fan.

[0027] Here, when the gas water heater operates, it heats the stored water by burning gas, so that the stored water can be quickly heated up; since insufficient gas combustion will lead to a decrease in the heating efficiency of the gas water heater, and the discharged flue gas may exceed the relevant flue gas emission standard requirements. In order to ensure the combustion efficiency of the gas, when the gas water heater heats up, the operation of the fan is controlled, and based on a suitable wind speed ratio to ensure sufficient air supply volume to promote gas combustion.

[0028] It should be noted that there are various control methods for the operation of the fan. For example, the operation of the fan is controlled by taking the operating wind speed as the control quantity, or the operation of the fan is controlled by taking the current value of the fan as the control quantity; considering the problem of ensuring the combustion efficiency of the gas, the gas water heater in the embodiment of the present application takes the operating wind speed as the control quantity and controls the fan to operate at the operating wind speed.

[0029] In the related art, some fans are provided with multiple wind gears and the operating wind speed is adjusted in a stepped speed regulation manner; some fans also adopt a stepless speed regulation manner to adjust the operating wind speed. The fan of the gas water heater in the embodiment of the present application adopts a stepless speed regulation manner to adjust the operating wind speed, and this method further includes: obtaining the gas quantity required for the operation of the gas water heater; determining the target wind speed of the fan based on the gas quantity and a preset second mapping relationship; wherein, the second mapping relationship represents the mapping relationship between the target wind speed and the gas quantity.

[0030] Here, the target wind speed is the wind speed that needs to be maintained for the exhaust of the fan during operation under the non-blocked working condition, and is used to determine the operating wind speed as the control quantity, and is positively correlated with the gas quantity.

[0031] Here, the gas quantity can be determined based on the heating gear and / or heating power selected by the user.

[0032] In some embodiments, determining the operating wind speed of the fan based on the target wind speed specifically means: taking the target wind speed as the operating wind speed of the wind speed, that is, when the target wind speed is used as the control quantity to control the operation of the fan, the actual wind speed of the fan exhaust is close to the target wind speed.

[0033] It can be understood that the greater the amount of gas required for the operation of the gas water heater, the greater the amount of oxygen required for gas combustion, and the greater the air volume that the fan needs to provide; the gas water heater in the embodiment of the present application is pre-configured with a second mapping relationship that characterizes the mapping relationship between the target wind speed and the gas amount, so that the calculated target wind speed matches the gas amount to ensure that the combustion efficiency of the gas meets the set requirements under normal operating conditions.

[0034] It should be noted that due to the uncertainty of the actual installation environment and external environmental conditions of the gas water heater, if the smoke exhaust duct connected to the gas water heater is too long during actual installation, or the wind force level of the external wind at the smoke exhaust port is too high, it will produce a large wind resistance. If the fan operation is still controlled based on the original operating wind speed under blockage conditions, the actual wind speed of the fan exhaust will drop significantly, resulting in incomplete gas combustion. The smoke emitted by the gas water heater exceeds the requirements of the relevant smoke emission standards and may even cause backflow of wind, posing a serious safety hazard.

[0035] In order to solve the problem of incomplete gas combustion caused by exhaust blockage, when exhaust blockage occurs, the actual wind speed of the exhaust is usually increased by supplementary air. In the related art, after determining that exhaust blockage has occurred, the exhaust wind speed of the fan is usually increased by switching to a high wind gear or automatically supplementing air based on different fixed supplementary air volumes. However, whether supplementing air is performed by the wind gear switching method or the automatic supplementary air method based on a fixed supplementary air volume, due to insufficient supplementary air accuracy, there is a mismatch between the supplementary air volume and the actual blockage condition, resulting in a problem that the supplementary air volume is too small, resulting in the gas combustion efficiency still needing to be improved, or the supplementary air volume is too large, or it causes unnecessary energy consumption and excessive noise.

[0036] Based on the above problems, an embodiment of the present application provides a fan air supply control method with stepless speed regulation, which aims to solve the problem of mismatch between air supply based on a fixed air supply volume and the actual blockage condition, and to improve the air supply accuracy of the fan of the gas water heater under different blockage conditions.

[0037] It should be noted that when exhaust blockage occurs, the actual wind speed of the fan exhaust decreases, and based on the correlation between wind speed and fan current, the fan current value will be affected. In the embodiment of the present application, the current current value of the fan is used as the feedback value, and by determining the degree of deviation of the current value obtained by feedback, it can be determined whether exhaust blockage occurs in the current working condition.

[0038] Exemplarily, determining the blockage level under the current working condition based on the current value of the fan and the target wind speed includes: determining the standard current value corresponding to the target wind speed under each working condition based on a preset third mapping relationship; comparing the current current value with each standard current value to determine the blockage level under the current working condition; wherein, the third mapping relationship represents the mapping relationship between the target wind speed and the standard current value under the unblocked working condition and each blockage level working condition.

[0039] Here, the blockage level represents different degrees of exhaust blockage; for example, based on the blockage working condition, it is divided into five blockage levels from level 1 to level 5 according to different degrees of exhaust blockage. The third mapping relationship includes the mapping relationship between the target wind speed and the standard current value under the unblocked working condition, the mapping relationship between the target wind speed and the standard current value under the blockage level 1 working condition, the mapping relationship between the target wind speed and the standard current value under the blockage level 2 working condition, the mapping relationship between the target wind speed and the standard current value under the blockage level 3 working condition, the mapping relationship between the target wind speed and the standard current value under the blockage level 4 working condition, and the mapping relationship between the target wind speed and the standard current value under the blockage level 5 working condition.

[0040] Here, the standard current value is the sampling result of the current value when a standard prototype of the same model as the fan of the gas water heater in the embodiment of the present application operates at the target wind speed under the set working condition; when controlling the standard prototype to operate at the target wind speed under the unblocked working condition, the actual wind speed of the exhaust of the standard prototype is equal to the target wind speed.

[0041] It should be noted that in the embodiment of the present application, by simulating the unblocked working condition and each blockage level working condition, and controlling the standard prototype to operate under each working condition, by continuously adjusting the operating wind speed of the standard prototype, collecting the current values corresponding to different operating wind speeds, and based on the sampling data of multiple groups of operating wind speeds and the current values of the standard prototype, using the data fitting method to obtain the mapping relationship between the target wind speed and the standard current value under each working condition.

[0042] It can be understood that the fan in the embodiment of the present application is pre-configured with a third mapping relationship. After determining the target wind speed of the current operation, based on the third mapping relationship, the corresponding standard current values under the unblocked working condition and each blockage level working condition can be determined. By comparing the deviation between the current current value and each standard current value, it is determined whether there is an exhaust blockage currently, and if there is an exhaust blockage, the blockage level close to the current degree of exhaust blockage is obtained, that is, the greater the deviation value between the current current value and the standard current value corresponding to the unblocked working condition, the higher the blockage level determined under the current working condition.

[0043] In an application example of the present application, the third mapping relationship is as Figure 2 shown.

[0044] In some embodiments, comparing the current current value with each standard current value to determine the blockage level under the current working condition includes: using each standard current value as an interval threshold to obtain a plurality of continuous current value intervals; and determining the blockage level under the current working condition based on the current value interval in which the current current value falls.

[0045] Here, each blockage level is sorted based on the degree of exhaust blockage from light to heavy. The current value interval corresponding to the blockage level is the interval range with the standard current value corresponding to the blockage level and the standard current value corresponding to the previous blockage level as the interval thresholds. For example, according to the third mapping relationship and the determined target wind speed, the standard current value under each working condition is obtained. Among them, the current value interval corresponding to blockage level 2 is the interval range between the standard current value corresponding to blockage level 2 and the standard current value corresponding to blockage level 1.

[0046] Exemplarily, determining the make-up air speed interval based on the target wind speed and the blockage level under the current working condition includes: determining the corresponding preset fourth mapping relationship based on the blockage level under the current working condition; and determining the make-up air speed interval based on the target wind speed and the determined fourth mapping relationship; where the fourth mapping relationship represents the mapping relationship between the target wind speed and the make-up air speed interval under each blockage level working condition.

[0047] It should be noted that in the case of exhaust blockage, the higher the target wind speed, the higher the required make-up air volume. In the related art, after determining the blockage level under the current working condition, a fixed make-up air volume matching the blockage level and the target wind speed is usually used for make-up air control. By making-up air control, the actual wind speed of the fan exhaust under the current working condition approaches the target wind speed again. Generally speaking, the higher the blockage level under the current working condition, the higher the matching fixed make-up air volume. However, based on make-up air control according to the blockage level and the target wind speed, although it solves the problem of low combustion efficiency of gas to a certain extent in the case of exhaust blockage, even if the exhaust blockage degree in the actual working condition is close to the exhaust blockage degree corresponding to the determined blockage level, there may still be obvious deviations. When making-up air control is carried out based on the fixed make-up air volume determined according to the blockage level, there is still an obvious gap between the actual wind speed of the fan exhaust after making-up air and the expected target wind speed due to insufficient make-up air accuracy.

[0048] It should be noted that in the related art, although the exhaust blockage degree can be divided more finely, that is, by adding the blockage level and the corresponding fixed make-up air volume to improve the make-up air accuracy when the fan makes-up air, the addition of the blockage level will greatly increase the data sampling difficulty and the make-up air control difficulty during the operation of the fan.

[0049] It should be noted that after determining the blockage level under the current working condition in the embodiments of the present application, by introducing the current value of the fan at present to participate in the determination of the make-up air speed of the fan, stepless adjustment of the air speed of the fan under the exhaust blockage condition is achieved.

[0050] Exemplarily, based on the target air speed and the blockage level under the current working condition, to determine the make-up air speed interval, it includes: based on the blockage level under the current working condition, determining the corresponding preset fourth mapping relationship; based on the target air speed and the determined fourth mapping relationship, determining the make-up air speed interval; wherein, the fourth mapping relationship represents the mapping relationship between the target air speed and the make-up air speed interval under the working conditions of each blockage level.

[0051] Exemplarily, based on the make-up air speed interval and the current current value, to determine the make-up air speed, it includes: based on the range of the make-up air speed interval and the range of the current value interval corresponding to the blockage level, establishing a mapping relationship to obtain a fifth mapping relationship representing the mapping relationship between the make-up air speed and the current value of the fan; based on the current current value and the fifth mapping relationship, determining the make-up air speed.

[0052] Here, the interval thresholds of the make-up air speed intervals corresponding to the target air speeds under the working conditions of each blockage level in the fourth mapping relationship can be obtained through testing with a standard prototype of the same type as the fan of the gas water heater. The specific testing method is: under the working conditions of the corresponding blockage level, adjusting the operating air speed of the standard prototype and detecting the actual air speed of the fan exhaust. The difference between the operating air speed when the actual air speed of the exhaust is the target air speed and the target air speed is the make-up air volume corresponding to the current blockage level and the target air speed. The obtained make-up air volume is used as the upper interval threshold of the make-up air speed interval corresponding to the blockage level and the target air speed in the fourth mapping relationship.

[0053] It can be understood that in the embodiments of the present application, based on the blockage level and the target air speed under the current working condition, only the make-up air speed interval is determined, and the make-up air volume is not directly determined. Instead, based on the current current value of the fan, the make-up air speed matching the current working condition is determined within the make-up air speed interval.

[0054] It can be understood that since the change in the exhaust blockage degree of the gas water heater will also cause the change in the current value of the air speed, based on the positional relationship of the current current value in the current value interval corresponding to the determined blockage level, the proximity degree of the exhaust blockage degree under the current working condition to the exhaust blockage degree represented by the determined blockage level can be determined; by establishing an association between the range of the make-up air speed interval and the current value interval corresponding to the blockage level, the mapping relationship between the make-up air speed and the current value of the fan is obtained.

[0055] It can be understood that when the degree of exhaust blockage of the gas water heater changes, even if the change range is small, the current current value as the feedback quantity will still change accordingly. Based on the fifth mapping relationship, stepless adjustment of the makeup air speed can be achieved, and then stepless adjustment of the operating speed of the fan can be achieved, improving the makeup air accuracy.

[0056] In some embodiments, in the fifth mapping relationship, there is a linear relationship between the makeup air speed and the current current value, that is, the range of the makeup air speed interval and the range of the current value interval corresponding to the blockage level are directly corresponding, and the specific position of the makeup air speed in the makeup air speed interval is directly determined based on the specific position of the current current value in the current value interval. In some embodiments, since the fourth mapping relationship represents the mapping relationship between the target wind speed and the makeup air speed interval under each blockage level working condition, and the fourth mapping relationship represents the mapping relationship between the target wind speed and the makeup air speed interval under each blockage level working condition, based on the third mapping relationship and the fourth mapping relationship, the correlation relationship between the standard current value and the makeup air speed under each blockage level corresponding to the target wind speed can be obtained. By performing fitting processing on the correlation data of each group of standard current values and makeup air speeds, the non-linear relationship between the makeup air speed corresponding to the target wind speed and the current current value can be obtained based on the fitting curve, and the fifth mapping relationship is constructed.

[0057] It should be noted that the gas water heater in the embodiment of the present application can pre-configure the third mapping relationship and the fourth mapping relationship, determine the blockage level and the operating speed interval under the current working condition based on the third mapping relationship and the fourth mapping relationship when exhaust blockage occurs, and construct the fifth mapping relationship; it can also directly pre-generate the fifth mapping relationship based on the third mapping relationship and the fourth mapping relationship, and directly obtain the corresponding makeup air speed based on the preset fifth mapping relationship and the current current value when exhaust blockage occurs.

[0058] Here, since the makeup air speed is determined based on the current current value in the embodiment of the present application, as a preferred example, the blockage level under the current working condition is also determined based on the current current value, the target wind speed and the third mapping relationship; it should be noted that the embodiment of the present application does not make specific limitations on determining the blockage level under the current working condition. In some embodiments, the blockage level under the current working condition can be determined by the change in the rotation speed of the fan; no matter what method is used to determine the blockage level under the current working condition, the makeup air speed can be determined based on the subsequent makeup air control method.

[0059] In some embodiments, before obtaining the current current value of the fan, the method further includes: determining the error compensation wind speed based on the target wind speed of the fan and the preset first mapping relationship; determining the operating speed of the fan based on the target wind speed and the error compensation wind speed, and controlling the fan to operate at the operating speed; wherein, the first mapping relationship represents the mapping relationship between the target wind speed and the error compensation wind speed.

[0060] It should be noted that under the non-blocked working condition, when controlling the standard prototype to operate at the target wind speed, the actual wind speed of the fan exhaust is the target wind speed; due to possible component errors, structural errors, and assembly errors during the production of the fan, when controlling the fan to operate at the target wind speed, there is a deviation between the actual wind speed of the fan exhaust and the target wind speed; in order to make the actual wind speed of the fan exhaust approach the target wind speed, when determining the target wind speed, the target wind speed is corrected by the error compensation wind speed to obtain the operating wind speed, so that when controlling the fan to operate at the operating wind speed, the actual exhaust wind speed approaches the target wind speed.

[0061] Exemplarily, the method further includes: under the non-blocked working condition, controlling the fan to operate at multiple set wind speeds and obtaining the corresponding current sampling values; based on the third mapping relationship corresponding to the non-blocked working condition, determining the standard current values corresponding to the set wind speeds; based on the deviation values between the current sampling values and the standard current values corresponding to the set wind speeds, determining the first mapping relationship.

[0062] It can be understood that by comparing the operation curve of the fan under the non-blocked working condition with the operation curve of the standard prototype under the non-blocked working condition, the error compensation wind speed corresponding to each target wind speed is determined based on the difference between the operation curves, and the first mapping relationship is generated; in the embodiment of the present application, when the gas water heater operates, the target wind speed is determined based on the required gas volume and the second mapping relationship, and the operation wind speed is determined based on the target wind speed and the first mapping relationship, and the fan is controlled to operate at the operation wind speed; during the operation of the fan, the current value is continuously obtained, and the fan is controlled for stepless adjustment of air supply compensation based on the change of the current value.

[0063] Here, before the gas water heater leaves the factory, the first mapping relationship is determined through testing, and the error is calibrated based on the configured first mapping relationship; in some embodiments, considering that the form of the exhaust pipe in the actual installation environment of the user is quite different from the form of the exhaust pipe in the test scenario, the gas water heater is provided with a calibration mode. After the gas water heater is installed, by starting the calibration mode, the error compensation wind speed of the fan is calibrated again, and the first mapping relationship is updated.

[0064] In some embodiments, during the process of determining the first mapping relationship before the gas water heater leaves the factory, if the determined error compensation wind speed or the difference between the current sampling value and the standard current value is greater than the difference threshold, the first mapping relationship is determined again; if after determining the first mapping relationship again, the determined error compensation wind speed or the difference between the current sampling value and the standard current value is still greater than the difference threshold, it is determined that the fan of the gas water heater is a non-conforming product.

[0065] In some embodiments, based on the aforementioned air supply compensation control method of the gas water heater, the operating wind speed of the gas water heater can be determined based on the following formula:

[0066] Wherein, F is the operating wind speed, f is the target wind speed, x is the gas quantity, and y is the blockage level. is the current current value; S(x) is the second mapping relationship for determining the target wind speed f; E(f) is the first mapping relationship for determining the error compensation wind speed; Z(y) is the standard current value corresponding to the blockage level under the current working condition, Z(y - 1) is the standard current value corresponding to the previous blockage level, and Z(y) and Z(y - 1) are determined based on the third mapping relationship Z(y)=F(y); K(f) is the fourth mapping relationship, and K(f)* - / [Z(y - 1)-Z(y)] is the fifth mapping relationship for determining the make-up air wind speed.

[0067] Based on the above formula, it is easy to understand that in this embodiment, the operating wind speed of the blower of the gas water heater is determined based on the gas quantity and the current current value; when the gas quantity is determined, due to the occurrence of exhaust blockage, the current current value changes, and the operating wind speed of the blower will change accordingly, so that the actual wind speed of the blower exhaust under each working condition matches the gas quantity.

[0068] To implement the method of the embodiments of the present application, the embodiments of the present application also provide a make-up air control device for a gas water heater. This make-up air control device corresponds to the above make-up air control method, and each step in the embodiments of the above make-up air control method is also fully applicable to the embodiments of this device.

[0069] As Figure 3 shown, the embodiments of the present application provide a make-up air control device for a gas water heater. The device includes: an acquisition module 301, a first determination module 302, a second determination module 303, a third determination module 304, and a control module 305. The acquisition module 301 is used to acquire the current current value of the blower when the blower is operating; the first determination module 302 is used to determine the blockage level under the current working condition based on the current current value of the blower and the target wind speed; the second determination module 303 is used to determine the make-up air wind speed range based on the target wind speed and the blockage level under the current working condition; the third determination module 304 is used to determine the make-up air wind speed based on the make-up air wind speed range and the current current value; the control module 305 is used to correct the operating wind speed of the blower based on the make-up air wind speed and control the blower to operate at the corrected operating wind speed.

[0070] In some embodiments, the make-up air control device further includes a fourth determination module 306, and the fourth determination module 306 is configured to: determine an error compensation wind speed based on the target wind speed of the fan and a preset first mapping relationship; determine the operating wind speed of the fan based on the target wind speed and the error compensation wind speed, and control the fan to operate at the operating wind speed; wherein, the first mapping relationship represents the mapping relationship between the target wind speed and the error compensation wind speed.

[0071] In some embodiments, the fourth determination module 306 is further configured to: obtain the gas volume required for the operation of the gas water heater; determine the target wind speed of the fan based on the gas volume and a preset second mapping relationship; wherein, the second mapping relationship represents the mapping relationship between the target wind speed and the gas volume.

[0072] In some embodiments, the first determination module 302 is specifically configured to: determine the standard current value corresponding to the target wind speed under each working condition based on a preset third mapping relationship; compare the current current value with each standard current value to determine the blockage level under the current working condition; wherein, the third mapping relationship represents the mapping relationship between the target wind speed and the standard current value under the non-blocked working condition and each blocked working condition.

[0073] In some embodiments, the first determination module 302 is specifically configured to: use each standard current value as an interval threshold to obtain a plurality of continuous current value intervals; determine the blockage level under the current working condition based on the current value interval into which the current current value falls.

[0074] In some embodiments, the second determination module 303 is specifically configured to: determine a corresponding preset fourth mapping relationship based on the blockage level under the current working condition; determine the make-up air speed interval based on the target wind speed and the determined fourth mapping relationship; wherein, the fourth mapping relationship represents the mapping relationship between the target wind speed and the make-up air speed interval under each blocked working condition.

[0075] In some embodiments, the third determination module 304 is specifically configured to: establish a mapping relationship based on the range of the make-up air speed interval and the range of the current value interval corresponding to the blockage level to obtain a fifth mapping relationship representing the mapping relationship between the make-up air speed and the current value of the fan; determine the make-up air speed based on the current current value and the fifth mapping relationship.

[0076] In some embodiments, the acquisition module 301 is further configured to: under the non-blocked working condition, control the fan to operate at a plurality of set wind speeds and obtain the corresponding current sampling values; the fourth determination module 306 is further configured to: determine the standard current value corresponding to each set wind speed based on the third mapping relationship corresponding to the non-blocked working condition; determine the first mapping relationship based on the deviation value between the current sampling value corresponding to each set wind speed and the standard current value.

[0077] It should be noted that when the air make-up control device provided in the above embodiments performs air make-up control, only the above division of each program module is used for illustration. In actual applications, the above processing can be allocated to different program modules according to needs, that is, the internal structure of the device is divided into different program modules to complete all or part of the above-described processing. In addition, the air make-up control device provided in the above embodiments belongs to the same concept as the embodiments, and the specific implementation process can be seen in the method embodiments, which will not be elaborated here.

[0078] Based on the hardware implementation of the above program modules, and in order to implement the air make-up control method of the embodiments of the present application, the embodiments of the present application also provide a gas water heater, as Figure 4 shown, the gas water heater 400 includes: at least one processor 401, a memory 402, a user interface 403, and at least one network interface 404. Each component in the gas water heater 400 is coupled together through a bus system 405. It can be understood that the bus system 405 is used to realize the connection and communication between these components. In addition to the data bus, the bus system 405 also includes a power bus, a control bus, and a status signal bus. However, for the sake of clear illustration, in Figure 4 all kinds of buses are labeled as the bus system 405.

[0079] Among them, the user interface 403 may include a display, a keyboard, a mouse, a trackball, a click wheel, a button, a button, a touchpad, or a touch screen, etc.

[0080] The memory 402 in the embodiments of the present application is used to store various types of data to support the operation of the gas water heater 400. Examples of these data include: any computer program for operating on the gas water heater 400.

[0081] The embodiments disclosed in the present application can be applied to or implemented by the processor 401. The processor 401 may be an integrated circuit chip with signal processing capabilities. In the implementation process, the various steps can be completed by the integrated logic circuit in hardware or instructions in software form in the processor 401. The aforementioned processor 401 may be a general-purpose processor, a digital signal processor (DSP, Digital Signal Processor), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The processor 401 can implement or execute the various methods, steps, and logic block diagrams disclosed in the embodiments of the present application. The general-purpose processor may be a microprocessor or any conventional processor, etc. Combining the steps of the method disclosed in the embodiments of the present application can be directly embodied as being executed and completed by the hardware decoding processor, or executed and completed by the combination of the hardware and software modules in the decoding processor. The software module may be located in the storage medium, and this storage medium is located in the memory 402. The processor 401 reads the information in the memory 402 and combines its hardware to complete the steps provided in the embodiments of the present application.

[0082] In an exemplary embodiment, the gas water heater 400 can be implemented by one or more application-specific integrated circuits (ASICs, Application Specific Integrated Circuits), DSPs, programmable logic devices (PLDs, Programmable Logic Devices), complex programmable logic devices (CPLDs, Complex Programmable Logic Devices), FPGAs, general-purpose processors, controllers, microcontroller units (MCUs, Micro Controller Units), microprocessors (Microprocessors), or other electronic components, and is used to execute the foregoing.

[0083] It can be understood that the memory 402 can be a volatile memory or a non-volatile memory, or can include both volatile and non-volatile memories. Among them, the non-volatile memory can be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an EEPROM, a ferromagnetic random access memory (FRAM), a flash memory, a magnetic surface memory, an optical disc, or a compact disc read-only memory (CD-ROM); the magnetic surface memory can be a disk memory or a tape memory. The volatile memory can be a random access memory (RAM), which is used as an external cache. By way of example but not limitation, many forms of RAM are available, such as a static random access memory (SRAM), a synchronous static random access memory (SSRAM), a dynamic random access memory (DRAM), a synchronous dynamic random access memory (SDRAM), a double data rate synchronous dynamic random access memory (DDR SDRAM), an enhanced synchronous dynamic random access memory (ESDRAM), a sync link dynamic random access memory (SLDRAM), and a direct rambus random access memory (DRRAM). The memory 402 described in the embodiments of the present application is intended to include but not limited to these and any other suitable types of memories.

[0084] In an exemplary embodiment, the embodiment of the present application further provides a storage medium, namely a computer storage medium, specifically a computer-readable storage medium. For example, it includes a memory 402 storing a computer program, and the above computer program can be executed by a processor 401 of a gas water heater 400 to complete the steps described in the air supply control method of the embodiment of the present application. The computer-readable storage medium can be a memory such as ROM, PROM, EPROM, EEPROM, Flash Memory, magnetic surface memory, optical disc, or CD-ROM.

[0085] In an exemplary embodiment, the embodiment of the present application further provides a computer program product, including a computer program, and the computer program can be executed by a processor 401 of a gas water heater 400 to complete the steps described in the method of the embodiment of the present application.

[0086] It should be noted that: "first", "second", etc. are used to distinguish similar objects, and do not necessarily have to be used to describe a specific order or sequence.

[0087] In addition, the technical solutions described in the embodiments of the present application can be arbitrarily combined without conflict.

[0088] As described above, the above is only the specific implementation manner of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present application can easily think of changes or substitutions, and all should be covered by the protection scope of the present application.

Claims

1. A method for controlling air make-up of a gas water heater, characterized in that, The gas water heater includes a blower for promoting gas combustion, and the method includes: When the blower is operating, obtaining the current value of the blower at present; Based on the current value of the blower and the target wind speed, determining the blockage level under the current working condition; Based on the target wind speed and the blockage level under the current working condition, determining the make-up air speed range; Based on the make-up air speed range and the current value, determining the make-up air speed; Based on the make-up air speed, correcting the operating wind speed of the blower, and controlling the blower to operate at the corrected operating wind speed; The determining the blockage level under the current working condition based on the current value of the blower and the target wind speed includes: Based on a preset third mapping relationship, determining the standard current value corresponding to the target wind speed under each working condition; Using each standard current value as an interval threshold to obtain a plurality of consecutive current value intervals; Based on the current value interval into which the current value falls, determining the blockage level under the current working condition; Wherein, the third mapping relationship represents the mapping relationship between the target wind speed and the standard current value under the non-blocked working condition and each blockage level working condition.

2. The method according to claim 1, wherein Before obtaining the current value of the blower at present, the method further includes: Based on the target wind speed of the blower and a preset first mapping relationship, determining the error compensation wind speed; Based on the target wind speed and the error compensation wind speed, determining the operating wind speed of the blower, and controlling the blower to operate at the operating wind speed; Wherein, the first mapping relationship represents the mapping relationship between the target wind speed and the error compensation wind speed.

3. The method according to claim 2, wherein Before determining the error compensation wind speed, the method further includes: Obtaining the gas volume required for the operation of the gas water heater; Based on the gas volume and a preset second mapping relationship, determining the target wind speed of the blower; Wherein, the second mapping relationship represents the mapping relationship between the target wind speed and the gas volume.

4. The method according to claim 1, characterized in that, The determining the make-up air speed range based on the target wind speed and the blockage level under the current working condition includes: Based on the blockage level under the current working condition, determining the corresponding preset fourth mapping relationship; Based on the target wind speed and the determined fourth mapping relationship, determining the make-up air speed range; Wherein, the fourth mapping relationship represents the mapping relationship between the target wind speed and the make-up air speed range under each blockage level working condition.

5. The method according to claim 4, wherein The determining the make-up air speed based on the make-up air speed range and the current value includes: Based on the range of the make-up air speed range and the range of the current value interval corresponding to the blockage level, establishing a mapping relationship to obtain a fifth mapping relationship representing the mapping relationship between the make-up air speed and the current value of the blower; Based on the current value and the fifth mapping relationship, determining the make-up air speed.

6. The method according to claim 2, wherein The method further includes: Under the non-blocked working condition, controlling the blower to operate at a plurality of set wind speeds and obtaining the corresponding current sampling values; Based on the third mapping relationship corresponding to the non-blocked working condition, determining the standard current value corresponding to each set wind speed; Based on the deviation value between the current sampling value corresponding to each set wind speed and the standard current value, determining the first mapping relationship; Among them, the third mapping relationship represents the mapping relationship between the target wind speed and the standard current value of the blower under unblocked working conditions.

7. An air supply compensation control device for a gas water heater, characterized in that, The gas water heater includes a blower for promoting gas combustion, and the device includes: An acquisition module, configured to acquire the current current value of the blower when the blower is running; A first determination module, configured to determine the standard current value corresponding to the target wind speed under each working condition based on a preset third mapping relationship; use each standard current value as an interval threshold to obtain a plurality of consecutive current value intervals; and determine the blockage level under the current working condition based on the current value interval in which the current current value falls; A second determination module, configured to determine a make-up air speed interval based on the target wind speed and the blockage level under the current working condition; A third determination module, configured to determine the make-up air speed based on the make-up air speed interval and the current current value; A control module, configured to correct the operating wind speed of the blower based on the make-up air speed, and control the blower to operate at the corrected operating wind speed; Among them, the third mapping relationship represents the mapping relationship between the target wind speed and the standard current value under unblocked working conditions and under each blockage level working condition.

8. A gas water heater, characterized in that, Including a blower for promoting gas combustion, the gas water heater further includes: a processor and a memory for storing a computer program that can run on the processor, where The processor is configured to execute the steps of the method according to any one of claims 1 to 6 when running the computer program.

9. A storage medium, on which a computer program is stored, characterized in that, When the computer program is executed by the controller, the steps of the method according to any one of claims 1 to 6 are implemented.

10. A computer program product, comprising a computer program, characterized in that, When the computer program is executed by the controller, the steps of the method according to any one of claims 1 to 6 are implemented.

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