Method and system for determining secondary pressure control parameter, water heater and medium

Abstract

The application provides a secondary pressure control parameter determination method, system, water heater and medium, the determination method comprises the following steps: controlling the opening of the proportional valve to be the maximum opening and the fire grate to be fully opened, and determining the minimum control parameter combination and the maximum control parameter combination of the full load in the stable flame combustion state; determining the minimum control parameter combination and the maximum control parameter combination of each load according to the minimum control parameter combination and the maximum control parameter combination of the full load; wherein the minimum proportional valve current and the maximum proportional valve current are inversely proportional to the number of opened fire grates, and the minimum fan speed and the maximum fan speed are proportional to the number of opened fire grates. The application only needs to determine the control parameters of the full load to assign the control parameters of other loads, ensures that the actual load reaches the target load under each load and guarantees that the flame is stable, does not go out and does not return after combustion, and the operation logic is simple, convenient and efficient.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of household appliances, and in particular to a secondary pressure control parameter determination method and system, a water heater, and a medium. BACKGROUND

[0002] A gas water heater needs to set secondary pressure and wind speed before leaving the factory, and match the limits of secondary pressure and wind speed of each segment. At present, it is set by experience, and the accuracy is not high. SUMMARY

[0003] The present application solves the technical problem that the secondary pressure and wind speed are set by experience in the prior art, and the accuracy is not high. A secondary pressure control parameter determination method, system, water heater, and medium are provided.

[0004] The present application solves the above technical problems by the following technical solutions:

[0005] The present application provides a secondary pressure control parameter determination method, and a water heater including a proportional valve and multiple fire bars. The determination method includes:

[0006] controlling the opening of the proportional valve to be the maximum opening value and the fire bars to be all turned on, and determining the minimum control parameter combination and the maximum control parameter combination of the full-segment load in the stable flame combustion state; wherein the minimum control parameter combination includes a minimum proportional valve current value and a minimum fan speed value, and the maximum control parameter combination includes a maximum proportional valve current value and a maximum fan speed value;

[0007] determining the minimum control parameter combination and the maximum control parameter combination of each segment load according to the minimum control parameter combination and the maximum control parameter combination of the full-segment load; wherein the minimum proportional valve current value and the maximum proportional valve current value are inversely proportional to the number of turned-on fire bars, and the minimum fan speed value and the maximum fan speed value are proportional to the number of turned-on fire bars.

[0008] Preferably, the determination of the minimum control parameter combination and the maximum control parameter combination of each segment load according to the minimum control parameter combination and the maximum control parameter combination of the full-segment load includes:

[0009] Step S121, closing one of the fire rows, taking the sum of the proportional valve current minimum value of the full segment load and a preset current increment value as the proportional valve current minimum value of the current segment load, taking the sum of the proportional valve current maximum value of the full segment load and a preset current increment value as the proportional valve current maximum value of the current segment load, taking the difference between the fan rotating speed minimum value of the full segment load and a preset rotating speed increment value as the fan rotating speed minimum value of the current segment load, and taking the difference between the fan rotating speed maximum value of the full segment load and a preset rotating speed increment value as the fan rotating speed maximum value of the current segment load;

[0010] Step S122, verifying whether the load and flame requirements are met when combustion is performed with the minimum control parameter combination and the maximum control parameter combination of the current segment load as the control parameters, if the load and flame requirements are met, the minimum control parameter combination and the maximum control parameter combination of the current segment load are successfully determined, and if the load and flame requirements are not met, the current increment value and the rotating speed increment value are reset according to the actual load and flame state to adjust the minimum control parameter combination and the maximum control parameter combination of the current segment load;

[0011] Step S123, repeating steps S21 and S22 until the number of the opened fire rows is zero.

[0012] Preferably, the resetting of the current increment value and the rotating speed increment value according to the actual load and flame state comprises:

[0013] increasing the corresponding current increment value when the actual load is less than the target load;

[0014] decreasing the corresponding current increment value when the actual load is greater than the target load;

[0015] increasing the corresponding rotating speed increment value when the flame is off;

[0016] decreasing the corresponding rotating speed increment value when the flame is back.

[0017] Preferably, the number of the fire rows is three, the rotating speed increment value comprises zero, and the current increment value comprises a first current increment value, a second current increment value, a third current increment value and a fourth current increment value.

[0018] The following formulas represent the minimum control parameter combination and the maximum control parameter combination of the two-segment load and the one-segment load:

[0019] N2min=N1min=N3min;

[0020] N2max=N1max=N3max;

[0021] I1min = I3min + A;

[0022] I2min = I3min + B;

[0023] I1max = I3max + C;

[0024] I2max = I3max + D;

[0025] wherein I3min represents a proportional valve current minimum value of full range load, I3max represents a proportional valve current maximum value of full range load, N3min represents a fan speed minimum value of full range load, N3max represents a fan speed maximum value, I2min represents a proportional valve current minimum value of two range load, I2max represents a proportional valve current maximum value of two range load, N2min represents a fan speed minimum value of two range load, N2max represents a fan speed maximum value, I1min represents a proportional valve current minimum value of one range load, I1max represents a proportional valve current maximum value of one range load, N1min represents a fan speed minimum value of one range load, N1max represents a fan speed maximum value, A represents a first current increment value, B represents a second current increment value, C represents a third current increment value, and D represents a fourth current increment value.

[0026] The application further provides a system for determining secondary pressure control parameters, and a water heater comprising a proportional valve and a plurality of fire bars, the system comprising:

[0027] a first determining module configured to control the opening of the proportional valve to be an opening maximum value and the fire bars to be all turned on, and determine a minimum control parameter combination and a maximum control parameter combination of full range load in a stable flame burning state; wherein the minimum control parameter combination comprises a proportional valve current minimum value and a fan speed minimum value, and the maximum control parameter combination comprises a proportional valve current maximum value and a fan speed maximum value;

[0028] a second determining module configured to determine minimum control parameter combinations and maximum control parameter combinations of each range load according to the minimum control parameter combination and the maximum control parameter combination of the full range load; wherein the proportional valve current minimum value and the proportional valve current maximum value are inversely proportional to the number of turned-on fire bars, and the fan speed minimum value and the fan speed maximum value are directly proportional to the number of turned-on fire bars.

[0029] Preferably, the second determining module is further configured to perform step S121, close one of the fire arrays, and set the minimum proportional valve current of the current segment load as the sum of the minimum proportional valve current of the full segment load and a preset current increment value, set the maximum proportional valve current of the current segment load as the sum of the maximum proportional valve current of the full segment load and a preset current increment value, set the minimum fan rotating speed of the current segment load as the difference between the minimum fan rotating speed of the full segment load and a preset rotating speed increment value, and set the maximum fan rotating speed of the current segment load as the difference between the maximum fan rotating speed of the full segment load and a preset rotating speed increment value.

[0030] The second determining module is further configured to perform step S122, verify whether the load and flame requirements are met when combustion is performed with the minimum control parameter combination and the maximum control parameter combination of the current segment load as control parameters, and if the load and flame requirements are met, successfully determine the minimum control parameter combination and the maximum control parameter combination of the current segment load; if the load and flame requirements are not met, reset the current increment value and the rotating speed increment value according to the actual load and flame state, and adjust the minimum control parameter combination and the maximum control parameter combination of the current segment load.

[0031] The second determining module is further configured to perform step S123, repeat steps S21 and S22 until the number of the opened fire arrays is zero.

[0032] Preferably, the second determining module is further configured to increase the corresponding current increment value when the actual load is less than the target load.

[0033] The second determining module is further configured to decrease the corresponding current increment value when the actual load is greater than the target load.

[0034] The second determining module is further configured to increase the corresponding rotating speed increment value when the flame is off.

[0035] The second determining module is further configured to decrease the corresponding rotating speed increment value when the flame is back.

[0036] Preferably, the number of the fire arrays is three, the rotating speed increment value includes zero, and the current increment value includes a first current increment value, a second current increment value, a third current increment value and a fourth current increment value.

[0037] The following formulas represent the minimum control parameter combination and the maximum control parameter combination of the two-segment load and the one-segment load:

[0038] N2min=N1min=N3min;

[0039] N2max=N1max=N3max;

[0040] I1min = I3min + A;

[0041] I2min = I3min + B;

[0042] I1max = I3max + C;

[0043] I2max = I3max + D;

[0044] Wherein, I3min represents the proportional valve current minimum value of full segment load, I3max represents the proportional valve current maximum value of full segment load, N3min represents the fan speed minimum value of full segment load, N3max represents the fan speed maximum value, I2min represents the proportional valve current minimum value of two segment load, I2max represents the proportional valve current maximum value of two segment load, N2min represents the fan speed minimum value of two segment load, N2max represents the fan speed maximum value, I1min represents the proportional valve current minimum value of one segment load, I1max represents the proportional valve current maximum value of one segment load, N1min represents the fan speed minimum value of one segment load, N1max represents the fan speed maximum value, A represents the first current increment value, B represents the second current increment value, C represents the third current increment value, and D represents the fourth current increment value.

[0045] The application further provides a water heater, which comprises a memory, a processor and a control program of the water heater stored on the memory and used for running on the processor, and the control program of the water heater realizes the determination method of the secondary pressure control parameter when executed by the processor.

[0046] The application further provides a computer storage medium, which stores the control program of the water heater, and the control program of the water heater realizes the determination method of the secondary pressure control parameter when executed by the processor.

[0047] The positive progress effect of the present application is that: in the case that the opening of the proportional valve is the maximum opening value and all the fire arrays are opened, the minimum control parameter combination and the maximum control parameter combination of the full load at which the flame remains stable in the combustion state are determined, the values of the control parameters corresponding to the minimum secondary pressure and the maximum secondary pressure under the full load are determined, then the control parameters of other loads are assigned according to the control parameters of the full load, and whether the control parameters of other loads are available (satisfy the load and flame requirements) is verified, and the control parameters are reset when they are not available (do not satisfy the load and flame requirements), so that the control parameters of other loads are assigned only by determining the control parameters of the full load, the control parameters of each load are ensured to be available, the actual load reaches the target load, and the flame is stable, does not go out, and does not return after combustion, the operation logic is simple, convenient, and efficient. BRIEF DESCRIPTION OF DRAWINGS

[0048] Figure 1 The flow chart of the determination method of the secondary pressure control parameter of the embodiment 1 of the present application.

[0049] Figure 2 The flow chart of a specific embodiment of the step S12 of the determination method of the secondary pressure control parameter of the embodiment 1 of the present application.

[0050] Figure 3 The module schematic diagram of the determination system of the secondary pressure control parameter of the embodiment 2 of the present application.

[0051] Figure 4 The structure schematic diagram of the water heater of the embodiment 3 of the present application. DETAILED DESCRIPTION

[0052] The present application is further illustrated by the following embodiments, but the present application is not limited in the scope of the embodiments.

[0053] Embodiment 1

[0054] The present embodiment provides a determination method of a secondary pressure control parameter. The water heater comprises a proportional valve and a plurality of fire arrays. Referring to Figure 1 , the determination method comprises:

[0055] The step S11, the opening of the proportional valve is controlled to be the maximum opening value and all the fire arrays are opened, and the minimum control parameter combination and the maximum control parameter combination of the full load at which the flame remains stable in the combustion state are determined. The minimum control parameter combination comprises the minimum proportional valve current and the minimum fan speed, and the maximum control parameter combination comprises the maximum proportional valve current and the maximum fan speed.

[0056] Step S12, determining the minimum control parameter combination and the maximum control parameter combination of each section according to the minimum control parameter combination and the maximum control parameter combination of the full section. Wherein, the minimum value and the maximum value of the proportional valve current are inversely proportional to the number of the opened fire array, and the minimum value and the maximum value of the fan speed are proportional to the number of the opened fire array.

[0057] Wherein, the secondary pressure refers to the gas pressure formed after the proportional valve, which is the pressure formed by the flow area of the diaphragm and the valve port of the proportional valve.

[0058] The setting of the secondary pressure is necessarily related to the load of each section. The smaller the number of the opened fire array is, the smaller the corresponding section load is, and the greater the opening of the proportional valve is required; the greater the number of the opened fire array is, the greater the corresponding section load is, and the smaller the opening of the proportional valve is required.

[0059] The secondary pressure is related to the proportional valve current. The greater the proportional valve current is, the greater the opening of the proportional valve is, the greater the flow area is, and the greater the secondary pressure is; the smaller the proportional valve current is, the smaller the opening of the proportional valve is, the smaller the flow area is, and the smaller the secondary pressure is.

[0060] The fan speed is related to the diffusion speed of the gas. The greater the fan speed is, the stronger the wind is, and the greater the diffusion speed is; the smaller the fan speed is, the weaker the wind is, and the smaller the diffusion speed is.

[0061] Taking the number of the fire array as 3 as an example, the full section load is the three-section load, and the opening of the proportional valve is the maximum, and the three-section fire array is all opened. The number of the opened fire array of the one-section load and the two-section load is 1 and 2 respectively, which is smaller than that of the three-section load. The flow passage smoothness of the one-section load and the two-section load is smaller than that of the three-section load (i.e. the flow passage of the one-section load and the two-section load is not smooth relative to the flow passage of the three-section load). Under the same proportional valve current, the secondary pressure corresponding to the one-section load and the two-section load is greater than that of the three-section load. Since it is necessary to ensure sufficient gas, the greater secondary pressure is required for the low section to maintain combustion. If the proportional valve current range of the three-section load is simply assigned to the one-section load and the two-section load, the positive combustion of the one-section load and the two-section load may be met and the load demand may be met, but it may not be met, so the proportional valve current range of the one-section load and the two-section load needs to be raised for proper adjustment.

[0062] In this case, if the fan speed of the one-section load and the two-section load is greater than that of the three-section load, the flame will be affected by the excessive wind speed and extinguished or deviated, so the minimum value and the maximum value of the fan speed are proportional to the number of the opened fire array.

[0063] The embodiment determines the minimum and maximum control parameters corresponding to the minimum and maximum secondary pressure of the full load by determining the minimum and maximum control parameter combinations of the full load at which the flame remains stable in the combustion state, and then assigning the control parameters of other loads according to the control parameters of the full load, so that the control parameters of each load can be used, the actual load reaches the target load, and the flame is stable, does not go out, and does not return after combustion, the operation logic is simple, convenient, and efficient.

[0064] In specific implementation, refer to Figure 2 , step S12 includes:

[0065] Step S121, close one fire row, and take the sum of the minimum proportional valve current of the full load and a preset current increment value as the minimum proportional valve current of the current load, take the sum of the maximum proportional valve current of the full load and a preset current increment value as the maximum proportional valve current of the current load, take the difference between the minimum fan speed of the full load and a preset speed increment value as the minimum fan speed of the current load, and take the difference between the maximum fan speed of the full load and a preset speed increment value as the maximum fan speed of the current load.

[0066] Step S122, verify whether the load and flame requirements are met when the minimum and maximum control parameter combinations of the current load are used for combustion, if the load and flame requirements are met, the minimum and maximum control parameter combinations of the current load are successfully determined, and if the load and flame requirements are not met, the current increment value and the speed increment value are reset according to the actual load and flame state to adjust the minimum and maximum control parameter combinations of the current load.

[0067] Step S123, repeat steps S21 and S22 until the number of opened fire rows is zero.

[0068] The embodiment determines the minimum and maximum control parameters corresponding to the secondary pressure of the full load by determining the minimum and maximum control parameter combinations of the full load when the opening of the proportional valve is the maximum opening and all the fire arrays are opened, and then assigns the control parameters of other loads according to the control parameters of the full load, and verifies whether the control parameters of other loads are available (satisfy the load and flame requirements), and resets the control parameters when they are not available (do not satisfy the load and flame requirements). Only the control parameters of the full load need to be determined to assign the control parameters of other loads, which ensures that the control parameters of each load are available, ensures that the actual load reaches the target load and ensures that the flame is stable, does not go out and does not backfire after combustion. The operation logic is simple, convenient and efficient.

[0069] In specific implementation, the step S122 of "resetting the current increment value and the speed increment value according to the actual load and the flame state" includes:

[0070] When the actual load is less than the target load, the corresponding current increment value is increased.

[0071] When the actual load is greater than the target load, the corresponding current increment value is decreased.

[0072] When the flame goes out, the corresponding speed increment value is increased.

[0073] When the flame backfires, the corresponding speed increment value is decreased.

[0074] In specific implementation, the number of fire arrays is 3, the speed increment value includes zero, and the current increment value includes a first current increment value, a second current increment value, a third current increment value and a fourth current increment value.

[0075] The following formulas represent the minimum and maximum control parameter combinations of the two-load and one-load:

[0076] N2min=N1min=N3min.

[0077] N2max=N1max=N3max.

[0078] I1min=I3min+A.

[0079] I2min=I3min+B.

[0080] I1max=I3max+C.

[0081] I2max=I3max+D.

[0082] I3min, I3max, N3min, N3max, I2min, I2max, N2min, N2max, I1min, I1max, N1min, N1max, A, B, C, D, wherein I3min represents the proportional valve current minimum value of the full section load, I3max represents the proportional valve current maximum value of the full section load, N3min represents the fan speed minimum value of the full section load, N3max represents the fan speed maximum value of the full section load, I2min represents the proportional valve current minimum value of the second section load, I2max represents the proportional valve current maximum value of the second section load, N2min represents the fan speed minimum value of the second section load, N2max represents the fan speed maximum value of the second section load, I1min represents the proportional valve current minimum value of the first section load, I1max represents the proportional valve current maximum value of the first section load, N1min represents the fan speed minimum value of the first section load, N1max represents the fan speed maximum value of the first section load, A represents the first current increment value, B represents the second current increment value, C represents the third current increment value, and D represents the fourth current increment value.

[0083] A, B, C and D can be set according to actual needs.

[0084] According to experience, A and C are basically consistent, B and D are basically consistent, and in the case of 100 parts of the proportional valve current, A and C are generally 10-15, and B and D are generally 5-10.

[0085] Example 2

[0086] The embodiment provides a determination system of secondary pressure control parameters. The water heater comprises a proportional valve and a plurality of fire bars. Referring to Figure 3 , the determination system comprises:

[0087] A first determination module 1 is configured to control the opening degree of the proportional valve to be the maximum opening degree and the fire bars to be all turned on, and determine the minimum control parameter combination and the maximum control parameter combination of the full section load in the stable flame combustion state. The minimum control parameter combination comprises a proportional valve current minimum value and a fan speed minimum value, and the maximum control parameter combination comprises a proportional valve current maximum value and a fan speed maximum value.

[0088] A second determination module 2 is configured to determine the minimum control parameter combination and the maximum control parameter combination of each section load according to the minimum control parameter combination and the maximum control parameter combination of the full section load. The proportional valve current minimum value and the proportional valve current maximum value are inversely proportional to the number of turned-on fire bars, and the fan speed minimum value and the fan speed maximum value are proportional to the number of turned-on fire bars.

[0089] In implementation, the second determining module 2 is further configured to perform step S121, close one of the fire rows, and set the minimum proportional valve current of the current segment load as the sum of the minimum proportional valve current of the full segment load and a preset current increment value, set the maximum proportional valve current of the current segment load as the sum of the maximum proportional valve current of the full segment load and a preset current increment value, set the minimum fan rotating speed of the current segment load as the difference between the minimum fan rotating speed of the full segment load and a preset rotating speed increment value, and set the maximum fan rotating speed of the current segment load as the difference between the maximum fan rotating speed of the full segment load and a preset rotating speed increment value.

[0090] The second determining module 2 is further configured to perform step S122, verify whether the load and flame requirements are met when combustion is performed with the minimum control parameter combination and the maximum control parameter combination of the current segment load as the control parameters, and if the load and flame requirements are met, successfully determine the minimum control parameter combination and the maximum control parameter combination of the current segment load. If the load and flame requirements are not met, reset the current increment value and the rotating speed increment value according to the actual load and flame state to adjust the minimum control parameter combination and the maximum control parameter combination of the current segment load.

[0091] The second determining module 2 is further configured to perform step S123, repeat steps S21 and S22 until the number of the opened fire rows is zero.

[0092] In implementation, the second determining module 2 is further configured to increase the corresponding current increment value when the actual load is less than the target load.

[0093] The second determining module 2 is further configured to decrease the corresponding current increment value when the actual load is greater than the target load.

[0094] The second determining module 2 is further configured to increase the corresponding rotating speed increment value when the flame is off.

[0095] The second determining module 2 is further configured to decrease the corresponding rotating speed increment value when the flame is back.

[0096] In implementation, the number of the fire rows is three, the rotating speed increment value includes zero, and the current increment value includes a first current increment value, a second current increment value, a third current increment value and a fourth current increment value.

[0097] The following formulas represent the minimum control parameter combination and the maximum control parameter combination of the two-segment load and the one-segment load:

[0098] N2min=N1min=N3min.

[0099] N2max=N1max=N3max.

[0100] I1min=I3min+A.

[0101] I2min=I3min+B.

[0102] I1max=I3max+C.

[0103] I2max=I3max+D.

[0104] Wherein, I3min represents the proportional valve current minimum value of full section load, I3max represents the proportional valve current maximum value of full section load, N3min represents the fan speed minimum value of full section load, N3max represents the fan speed maximum value, I2min represents the proportional valve current minimum value of two section load, I2max represents the proportional valve current maximum value of two section load, N2min represents the fan speed minimum value of two section load, N2max represents the fan speed maximum value, I1min represents the proportional valve current minimum value of one section load, I1max represents the proportional valve current maximum value of one section load, N1min represents the fan speed minimum value of one section load, N1max represents the fan speed maximum value, A represents the first current increment value, B represents the second current increment value, C represents the third current increment value, and D represents the fourth current increment value.

[0105] The embodiment determines the minimum control parameter combination and the maximum control parameter combination of the full section load in the case that the opening of the proportional valve is the maximum opening value and the fire array is fully opened, determines the value of the control parameter corresponding to the minimum secondary pressure and the maximum secondary pressure under the full section load, and then assigns values to the control parameters of other section loads according to the control parameters of the full section load, verifies whether the control parameters of other section loads are available (satisfy the load and flame requirements), and resets the control parameters when they are not available (do not satisfy the load and flame requirements). Only the control parameters of the full section load need to be determined to assign values to the control parameters of other section loads, which ensures that the control parameters of each section load are available, ensures that the actual load reaches the target load and ensures that the flame is stable, does not go out, and does not return after combustion, the operation logic is simple, convenient, and efficient.

[0106] It should be noted that the principles and technical effects of each module of the secondary pressure control parameter determination system of the embodiment can refer to the corresponding parts of embodiment 1, which will not be repeated here.

[0107] Embodiment 3

[0108] Figure 4A structure schematic diagram of a water heater is provided for embodiment 3 of the present application. The water heater comprises a memory, a processor and a computer program stored in the memory and capable of running on the processor, and the processor implements the determination method of the secondary pressure control parameter in embodiment 1 when executing the program. Figure 4 The displayed water heater 30 is only an example and should not bring any limitation to the function and use range of the embodiment of the present application.

[0109] The water heater 30 can be in the form of a general computing device, for example, it can be a server device. The components of the water heater 30 can include but are not limited to: the above-mentioned at least one processor 31, the above-mentioned at least one memory 32, a bus 33 connecting different system components including the memory 32 and the processor 31.

[0110] The bus 33 includes a data bus, an address bus and a control bus.

[0111] The memory 32 can include a volatile memory, for example, a random access memory (RAM) 321 and / or a cache memory 322, and can further include a read-only memory (ROM) 323.

[0112] The memory 32 can also include a program / utility 325 having a set (at least one) of program modules 324, such as an operating system, one or more application programs, other program modules, and program data, and each of these examples, or some combination thereof, can include implementation of a network environment.

[0113] The processor 31 performs various function applications and data processing by running the computer program stored in the memory 32, for example, the determination method of the secondary pressure control parameter in embodiment 1 of the present application.

[0114] The water heater 30 can also communicate with one or more external devices 34 (such as a keypad, a pointing device, etc.). Such communication can occur via Input / Output (I / O) interface 35. Still yet, the water heater 30 can communicate with one or more networks (such as a local area network (LAN), a wide area network (WAN), and / or the public network, such as the Internet) through a network adapter 36. As depicted, the network adapter 36 communicates with the other modules of the water heater 30 through the bus 33. It should be appreciated that although not shown, other hardware and / or software modules could be used in conjunction with the water heater 30. Such as, but not limited to: microcode, device drivers, redundant processing units, external disk drive arrays, RAID (Redundant Array of Independent Disks) systems, tape drives, and data archival storage systems, etc.

[0115] The water heater 30 also includes a proportional valve and a plurality of fire bars.

[0116] It should be noted that, although in the above detailed description several units / modules or sub-units / modules of the water heater are mentioned, such division is merely exemplary and not mandatory. Indeed, according to embodiments of the present application, the features and functions of two or more units / modules described above can be embodied in one unit / module; conversely, the features and functions of one unit / module described above can be further divided into embodied by a plurality of units / modules.

[0117] Embodiment 4

[0118] The embodiment provides a computer readable storage medium, which stores a computer program, and the program is executed by a processor to realize the determination method of the secondary pressure control parameter in the embodiment 1.

[0119] More specifically, the readable storage medium can include, but is not limited to, a portable disc, a hard disk, a random access memory, a read-only memory, an erasable programmable read-only memory, an optical storage device, a magnetic storage device, or any suitable combination of the above.

[0120] In possible embodiments, the present application can also be implemented in the form of a program product, which includes program codes for causing a terminal device to execute the determination method of the secondary pressure control parameter in the embodiment 1 when the program product is run on the terminal device.

[0121] The program codes for executing the present application can be written in any combination of one or more programming languages, and can be executed completely on a user device, partially on a user device, as a stand-alone software package, partially on a user device and partially on a remote device, or completely on a remote device.

[0122] Although the specific embodiments of the present application are described above, those skilled in the art should understand that this is only an example, and the protection scope of the present application is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of the present application, and such changes and modifications all fall within the protection scope of the present application.

Claims

1. A method of determining a secondary pressure control parameter, characterized by, The water heater includes a proportional valve and multiple burners, and the determination method includes: The proportional valve is controlled to its maximum opening and the fire bar is fully open. The minimum and maximum control parameter combinations for maintaining a stable flame load across the entire combustion stage are determined. The minimum control parameter combination includes the minimum proportional valve current and the minimum fan speed, and the maximum control parameter combination includes the maximum proportional valve current and the maximum fan speed. The minimum and maximum control parameter combinations for each load segment are determined based on the minimum and maximum control parameter combinations for the entire load segment; wherein, the minimum and maximum values ​​of the proportional valve current are inversely proportional to the number of open burners, and the minimum and maximum values ​​of the fan speed are directly proportional to the number of open burners. The step of determining the minimum and maximum control parameter combinations for each load segment based on the minimum and maximum control parameter combinations for the entire load segment includes: Step S121: Close one of the fire bars. The minimum proportional valve current of the current segment load is the sum of the minimum proportional valve current of the total load segment and a preset current increment value. The maximum proportional valve current of the current segment load is the sum of the maximum proportional valve current of the total load segment and a preset current increment value. The minimum fan speed of the current segment load is the difference between the minimum fan speed of the total load segment and a preset speed increment value. The maximum fan speed of the current segment load is the difference between the maximum fan speed of the total load segment and a preset speed increment value. Step S122: Verify whether the load and flame requirements are met when combustion is performed using the minimum and maximum control parameter combinations of the current load segment as control parameters. If the load and flame requirements are met, the minimum and maximum control parameter combinations of the current load segment are successfully determined. If the load and flame requirements are not met, the current increment value and the speed increment value are reset according to the actual load and flame state to adjust the minimum and maximum control parameter combinations of the current load segment. Step S123, repeat steps S21 and S22 until the number of activated fire bars is zero.

2. The method of claim 1, wherein the secondary pressure control parameter is determined based on a difference between the target pressure and the current pressure. The step of resetting the current increment value and the rotational speed increment value according to the actual load and flame condition includes: When the actual load is less than the target load, the corresponding current increment value is increased; When the actual load is greater than the target load, the corresponding current increment value is reduced; When flameout occurs, increase the corresponding speed increment value; When tempering occurs, reduce the corresponding speed increment value.

3. The method of claim 1, wherein the secondary pressure control parameter is determined based on a difference between the target pressure and the current pressure. The number of burners is 3, the speed increment value includes zero, and the current increment value includes a first current increment value, a second current increment value, a third current increment value, and a fourth current increment value; The following formulas represent the minimum and maximum control parameter combinations for two-stage loads and one-stage loads: N2min = N1min = N3min; N2max = N1max = N3max; I1min = I3min + A; I2min = I3min + B; I1max = I3max + C; I2max = I3max + D; Wherein, I3min represents the minimum proportional valve current of the entire load segment, I3max represents the maximum proportional valve current of the entire load segment, N3min represents the minimum fan speed of the entire load segment, N3max represents the maximum fan speed, I2min represents the minimum proportional valve current of the second load segment, I2max represents the maximum proportional valve current of the second load segment, N2min represents the minimum fan speed of the second load segment, N2max represents the maximum fan speed, I1min represents the minimum proportional valve current of the first load segment, I1max represents the maximum proportional valve current of the first load segment, N1min represents the minimum fan speed of the first load segment, N1max represents the maximum fan speed, A represents the first current increment value, B represents the second current increment value, C represents the third current increment value, and D represents the fourth current increment value.

4. A system for determining secondary pressure control parameters, characterized in that, The water heater includes a proportional valve and multiple burners, and the determining system includes: The first determining module is used to control the opening degree of the proportional valve to the maximum opening degree and the fire bar to be fully open, and to determine the minimum control parameter combination and the maximum control parameter combination for maintaining a stable flame load across the entire section during combustion; wherein, the minimum control parameter combination includes the minimum value of the proportional valve current and the minimum value of the fan speed, and the maximum control parameter combination includes the maximum value of the proportional valve current and the maximum value of the fan speed; The second determining module is used to determine the minimum control parameter combination and the maximum control parameter combination of each segment load based on the minimum control parameter combination and the maximum control parameter combination of the full segment load; wherein, the minimum value of the proportional valve current and the maximum value of the proportional valve current are inversely proportional to the number of open burners, and the minimum value of the fan speed and the maximum value of the fan speed are directly proportional to the number of open burners; The second determining module is also used to execute step S121, shut down one of the fire bars, take the sum of the minimum proportional valve current of the full load segment and a preset current increment value as the minimum proportional valve current of the current load segment, take the sum of the maximum proportional valve current of the full load segment and a preset current increment value as the maximum proportional valve current of the current load segment, take the difference between the minimum fan speed of the full load segment and a preset speed increment value as the minimum fan speed of the current load segment, and take the difference between the maximum fan speed of the full load segment and a preset speed increment value as the maximum fan speed of the current load segment. The second determining module is also used to execute step S122, verifying whether the load and flame requirements are met when combustion is performed using the minimum and maximum control parameter combinations of the current segment load as control parameters. If the load and flame requirements are met, the minimum and maximum control parameter combinations of the current segment load are successfully determined. If the load and flame requirements are not met, the current increment value and the speed increment value are reset according to the actual load and flame state to adjust the minimum and maximum control parameter combinations of the current segment load. The second determining module is also used to execute step S123, repeat steps S21 and S22 until the number of activated fire bars is zero.

5. The system for determining secondary pressure control parameters as described in claim 4, characterized in that, The second determining module is also used to increase the corresponding current increment value when the actual load is less than the target load; The second determining module is further configured to reduce the corresponding current increment value when the actual load is greater than the target load; The second determining module is also used to increase the corresponding rotational speed increment value when fire separation occurs; The second determining module is also used to reduce the corresponding speed increment value when tempering occurs.

6. The system for determining secondary pressure control parameters as described in claim 4, characterized in that, The number of burners is 3, the speed increment value includes zero, and the current increment value includes a first current increment value, a second current increment value, a third current increment value, and a fourth current increment value; The following formulas represent the minimum and maximum control parameter combinations for two-stage loads and one-stage loads: N2min = N1min = N3min; N2max = N1max = N3max; I1min = I3min + A; I2min = I3min + B; I1max = I3max + C; I2max = I3max + D; Wherein, I3min represents the minimum proportional valve current of the entire load segment, I3max represents the maximum proportional valve current of the entire load segment, N3min represents the minimum fan speed of the entire load segment, N3max represents the maximum fan speed, I2min represents the minimum proportional valve current of the second load segment, I2max represents the maximum proportional valve current of the second load segment, N2min represents the minimum fan speed of the second load segment, N2max represents the maximum fan speed, I1min represents the minimum proportional valve current of the first load segment, I1max represents the maximum proportional valve current of the first load segment, N1min represents the minimum fan speed of the first load segment, N1max represents the maximum fan speed, A represents the first current increment value, B represents the second current increment value, C represents the third current increment value, and D represents the fourth current increment value.

7. A water heater, characterized in that, The water heater includes a memory, a processor, and a control program for the water heater stored in the memory and used to run on the processor. When the control program for the water heater is executed by the processor, it implements the method for determining the secondary pressure control parameters as described in any one of claims 1-3.

8. A computer storage medium, characterized in that, The computer storage medium stores a control program for the water heater, which, when executed by a processor, implements the method for determining the secondary pressure control parameters as described in any one of claims 1-3.

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