Wall-mounted gas boiler control method, wall-mounted gas boiler, electronic equipment and storage medium

Abstract

The invention discloses a wall-mounted gas stove control method, a wall-mounted gas stove, electronic equipment and a storage medium, after the wall-mounted gas stove runs, whether the wall-mounted gas stove meets the heating running condition or not is judged according to the current heating environment temperature T0'and / or the heating water outlet temperature T2 '; if not, the wall-mounted gas boiler stops running; if yes, the opening degree of a gas proportional valve and the power of a water pump are adjusted according to the heating return water temperature T3 ', the preset return water temperature range, the smoke exhaust temperature T1 and the preset smoke exhaust temperature range, so that the heating return water temperature T3' is within the preset return water temperature range, and the smoke exhaust temperature T1 is within the preset smoke exhaust temperature range; when the heating return water temperature T3'is higher than the lower limit value of the preset return water temperature range, the smoke exhaust temperature T1 is higher than the lower limit value of the preset smoke exhaust temperature range, and the lower limit value of the preset smoke exhaust temperature range is higher than the dew point temperature of the smoke, so that condensate water generated at the main heat exchanger due to the fact that the smoke exhaust temperature T1 is lower than the dew point temperature of the smoke can be avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of gas wall-mounted boiler control, and in particular to a gas wall-mounted boiler control method, a gas wall-mounted boiler, an electronic device and a storage medium. Background Art

[0002] The gas wall-mounted boiler generates high-temperature flue gas after gas combustion, and most of the heat in the high-temperature flue gas is transferred to the room's heating system through the main heat exchanger and heating circuit.

[0003] When the heating return water pipe is long or the room being heated is cold, the return water temperature will be low. This low return water temperature will cause the surface temperature of the main heat exchanger to be too low. When the flue gas containing a large amount of water vapor comes into contact with the main heat exchanger, the flue gas temperature drops below its dew point, resulting in condensation. This condensation can react with the CO2 and SO2 in the flue gas to form acidic substances. These acidic substances will corrode the main heat exchanger, affecting its performance and lifespan. Summary of the Invention

[0004] The present invention provides a gas wall-mounted boiler control method to solve the problem that flue gas generates condensed water at a main heat exchanger, thereby affecting the performance and life of the main heat exchanger.

[0005] In a first aspect, the present invention provides a gas wall-mounted boiler control method, comprising:

[0006] After the gas wall-mounted boiler is running, a first judgment step is performed, wherein the first judgment step is to judge whether the gas wall-mounted boiler meets the heating operation conditions according to the current heating environment temperature T0′ and / or the heating water outlet temperature T2′;

[0007] If not, the gas wall-mounted boiler stops running;

[0008] If so, the gas proportional valve opening and the water pump power are adjusted according to the heating return water temperature T3′, the preset return water temperature range, the exhaust gas temperature T1 and the preset exhaust gas temperature range, so that the heating return water temperature T3′ is within the preset return water temperature range and the exhaust gas temperature T1 is within the preset exhaust gas temperature range. When the heating return water temperature T3′ is higher than the lower limit of the preset return water temperature range, the exhaust gas temperature T1 is higher than the lower limit of the preset exhaust gas temperature range, and the lower limit of the preset exhaust gas temperature range is higher than the dew point temperature of the flue gas.

[0009] The gas wall-mounted boiler control method according to the embodiment of the present invention has the following beneficial effects:

[0010] When the gas wall-mounted boiler is running, adjusting the gas proportional valve can adjust the flue gas temperature after combustion, and thus directly adjust the exhaust gas temperature T1. Adjusting the water pump power can adjust the heat exchange efficiency between the hot water and the heating system, and thus adjust the heating return water temperature T3′. The water in the heating return water pipe exchanges heat with the flue gas, that is, the heating return water temperature T3′ affects the exhaust gas temperature T1 (the temperature of the flue gas after heat exchange). Therefore, adjusting the water pump power is equivalent to indirectly adjusting the exhaust gas temperature T1. When the heating return water temperature T3′ is higher than the lower limit of the preset return water temperature range, the exhaust gas temperature T1 is higher than the lower limit of the preset exhaust gas temperature range. Therefore, in the process of adjusting the gas proportional valve opening and the water pump power, the preset return water temperature range and the exhaust gas temperature range are used as limiting conditions to ensure that the heating return water temperature T3′ and the exhaust gas temperature T1 are both within the preset temperature range. Ultimately, it can be ensured that the exhaust gas temperature T1 can be higher than the lower limit of the preset exhaust gas temperature range, and the lower limit of the preset exhaust gas temperature range is higher than the dew point temperature of the flue gas. Therefore, it can avoid the generation of condensed water in the main heat exchanger due to the exhaust gas temperature T1 being lower than the dew point temperature of the flue gas, thereby extending the performance and life of the main heat exchanger.

[0011] In a second aspect, the present invention provides a gas wall-mounted boiler, including a main controller, the main controller including:

[0012] A first detection module is configured to detect the current heating environment temperature T0′ and / or the heating water outlet temperature T2′ after the gas wall-mounted boiler is in operation, and execute a first judgment step, wherein the first judgment step is to determine whether the gas wall-mounted boiler meets the heating operation conditions based on the current heating environment temperature T0′ and / or the heating water outlet temperature T2′; if not, the contents of the stopping module are executed; if so, the contents of the adjusting module are executed;

[0013] Stop operation module, used to stop the gas wall-mounted boiler;

[0014] The adjustment module is used to adjust the gas proportional valve opening and the water pump power according to the heating return water temperature T3′, the preset return water temperature range, the exhaust gas temperature T1 and the preset exhaust gas temperature range, so that the heating return water temperature T3′ is within the preset return water temperature range and the exhaust gas temperature T1 is within the preset exhaust gas temperature range. When the heating return water temperature T3′ is higher than the lower limit of the preset return water temperature range, the exhaust gas temperature T1 is higher than the lower limit of the preset exhaust gas temperature range, and the lower limit of the preset exhaust gas temperature range is higher than the dew point temperature of the flue gas.

[0015] In a third aspect, the present invention provides an electronic device, comprising:

[0016] at least one processor; and

[0017] a memory communicatively connected to the at least one processor; wherein,

[0018] The memory stores a computer program that can be executed by the at least one processor, and the computer program is executed by the at least one processor so that the at least one processor can execute the gas wall-mounted boiler control method described in the first aspect of the present invention.

[0019] In a fourth aspect, the present invention provides a computer-readable storage medium storing computer instructions, wherein the computer instructions are used to enable a processor to implement the gas wall-mounted boiler control method described in the first aspect of the present invention when executed.

[0020] It should be understood that the content described in this section is not intended to identify the key or important features of the embodiments of the present invention, nor is it intended to limit the scope of the present invention. Other features of the present invention will become readily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0022] Figure 1 This is a flow chart of a gas wall-mounted boiler control method provided by an embodiment of the present invention;

[0023] Figure 2 This is a flow chart of a gas wall-mounted boiler control method provided by an embodiment of the present invention;

[0024] Figure 3 This is a flow chart of a gas wall-mounted boiler control method provided by an embodiment of the present invention.

[0025] Figure 4 This is a structural diagram of a main controller in a gas wall-mounted boiler provided by an embodiment of the present invention;

[0026] Figure 5 It is a structural diagram of an electronic device provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0027] In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of the present invention.

[0028] Figure 1 This is a flow chart of a gas wall-mounted boiler control method provided by an embodiment of the present invention. This embodiment is applicable to the control of gas wall-mounted boilers. The method can be executed by a main controller in the gas wall-mounted boiler. The main controller can be implemented in the form of hardware and / or software. The main controller can be configured in an electronic device. Figure 1 As shown, the gas wall-mounted boiler control method includes:

[0029] S101. After the gas wall-mounted boiler is in operation, the current heating environment temperature T0′ and / or the heating water outlet temperature T2′ are detected, and a first judgment step is performed. The first judgment step is to judge whether the gas wall-mounted boiler meets the heating operation conditions based on the current heating environment temperature T0′ and / or the heating water outlet temperature T2′.

[0030] During the operation of the wall-mounted boiler, high-temperature flue gas is generated after gas combustion. The flue gas is output to the main heat exchanger for heat exchange with the heating return water, so that the water temperature increases and the flue gas temperature decreases. The flue gas after heat exchange is discharged from the fan outlet, and the heated water is transported to the heating system through the heating outlet pipe for heat exchange. The heating system absorbs the heat of the water and heats the heating environment, thereby lowering the water temperature. The cooled water is transported to the main heat exchanger through the heating return pipe for heat exchange with the flue gas, thereby forming a heating cycle.

[0031] Temperature probes are installed at the heating environment, heating water outlet pipe, heating return water pipe and fan outlet. Among them, the fan outlet can be equipped with a smoke temperature probe. These temperature probes are used to detect the heating environment temperature T0′, heating water outlet temperature T2′, heating return water temperature T3′ and exhaust gas temperature T1 respectively. These temperature probes are all connected to the main controller of the gas wall-mounted boiler.

[0032] The purpose of operating a gas wall-mounted boiler is to provide heat to the heating area when the temperature of the heating environment has not reached the set temperature value. The heating environment temperature T0′ can directly indicate whether the temperature of the heating environment has reached the set temperature value. The heating system releases the absorbed heat to the heating environment after heat exchange with the heating outlet water, that is, the external heat of the heating environment is provided by the heating outlet water. The heating outlet water temperature T2′ can determine the temperature of the heating environment, and thus the heating outlet water temperature T2′ can indirectly indicate whether the temperature of the heating environment can meet the set temperature requirement.

[0033] When the temperature of the heating environment has reached the set temperature value or can reach the set temperature value, it means that the heating is sufficient and the gas wall-mounted boiler does not need to continue to operate. It is considered that the heating operation conditions are not met, and S102 can be executed to control the gas wall-mounted boiler to stop operating. When the temperature of the heating environment has not reached the set temperature value or fails to reach the set temperature value, it means that the heating is insufficient and the gas wall-mounted boiler needs to keep running. That is, it is considered that the heating operation conditions are met, and S103 is executed to adjust the gas proportional valve opening and the water pump power.

[0034] It should be noted that, in this embodiment, it is possible to judge whether the gas wall-mounted boiler meets the heating operating conditions based on the current heating environment temperature T0′ or the heating water outlet temperature T2′ (i.e., either one of the two), or it is possible to judge whether the gas wall-mounted boiler meets the heating operating conditions based on the current heating environment temperature T0′ and the heating water outlet temperature T2′ (both at the same time). Optionally, since the heating environment temperature T0′ directly reflects the degree of heating demand, the priority of the heating environment temperature T0′ can also be set higher than the priority of the heating water outlet temperature T2′, that is, the judgment is made based on the heating environment temperature T0′ first. The specific setting can be based on actual needs, and the present invention is not limited to this.

[0035] Optionally, the first judgment step includes: judging whether the heating environment temperature T0′ is greater than the environment heating temperature setting value T0 or the heating water outlet temperature T2′ is greater than the water outlet temperature setting value T2; if so, the heating operation conditions are not met; if not, the heating operation conditions are not met.

[0036] S102: The gas wall-mounted boiler stops running.

[0037] Specifically, the gas wall-mounted boiler stops running, including closing the gas proportional valve, the fan and the water pump. At the same time, the gas wall-mounted boiler is in standby mode. In the standby mode, the main controller of the gas wall-mounted boiler continues to execute the first judgment step.

[0038] S103. Adjust the gas proportional valve opening and water pump power according to the heating return water temperature T3′, the preset return water temperature range, the exhaust gas temperature T1 and the preset exhaust gas temperature range, so that the heating return water temperature T3′ is within the preset return water temperature range and the exhaust gas temperature T1 is within the preset exhaust gas temperature range.

[0039] When the heating return water temperature T3′ is higher than the lower limit of the preset return water temperature range, the exhaust gas temperature T1 is higher than the lower limit of the preset exhaust gas temperature range, and the lower limit of the preset exhaust gas temperature range is higher than the dew point temperature of the flue gas.

[0040] When the gas wall-mounted boiler is running, adjusting the gas proportional valve can adjust the temperature of the flue gas produced after gas combustion, which is equivalent to directly adjusting the exhaust temperature T1. Adjusting the water pump power can adjust the heat exchange efficiency between the hot water output from the heating outlet pipe and the heating system, and thus adjust the water temperature of the heating return pipe, that is, adjust the heating return water temperature T3'. The water in the heating return pipe exchanges heat with the flue gas. The exhaust temperature T1 and the heating return water temperature T3' are positively correlated. Therefore, adjusting the water pump power is equivalent to adjusting the exhaust temperature T1. The exhaust temperature T1 is the temperature of the flue gas after heat exchange. The flue gas contains water vapor. When the exhaust temperature T1 is lower than the dew point temperature of the flue gas, it means that the temperature of the flue gas after heat exchange is lower than its dew point temperature. At this time, the flue gas is prone to form condensed water on the surface of the main heat exchanger, which in turn affects the performance and life of the main heat exchanger.

[0041] In order to prevent the flue gas from forming condensate on the surface of the main heat exchanger, the gas proportional valve opening and the water pump power are adjusted according to the heating return water temperature T3′, the preset return water temperature range, the exhaust gas temperature T1 and the preset exhaust gas temperature range, so that the heating return water temperature T3′ is within the preset return water temperature range and the exhaust gas temperature T1 is within the preset exhaust gas temperature range. When the heating return water temperature T3′ is higher than the lower limit of the preset return water temperature range, the exhaust gas temperature T1 is also higher than the lower limit of the preset exhaust gas temperature range. Ultimately, it can be ensured that the exhaust gas temperature T1 can be higher than the lower limit of the preset exhaust gas temperature range, and the lower limit of the preset exhaust gas temperature range is higher than the dew point temperature of the flue gas. Therefore, it can be avoided that condensate is generated in the main heat exchanger due to the exhaust gas temperature T1 being lower than the dew point temperature of the flue gas.

[0042] Optionally, the preset return water temperature range is 40°C-50°C, and the preset exhaust temperature range is 110°C-120°C. In actual applications, the temperature range of this embodiment can be set according to actual needs. This is only used as an example and not as a limitation to the present invention.

[0043] In the embodiment of the present invention, when the gas wall-mounted boiler is in operation, adjusting the gas proportional valve can adjust the flue gas temperature after combustion, and thus the exhaust gas temperature T1 can be directly adjusted. Adjusting the water pump power can adjust the heat exchange efficiency between the hot water and the heating system, and further adjust the heating return water temperature T3′. The water in the heating return water pipe exchanges heat with the flue gas, that is, the heating return water temperature T3′ affects the exhaust gas temperature T1 (the temperature of the flue gas after heat exchange), and adjusting the water pump power is equivalent to indirectly adjusting the exhaust gas temperature T1. When the heating return water temperature T3′ is higher than the lower limit of the preset return water temperature range, the exhaust gas temperature T1 is higher than the lower limit of the preset exhaust gas temperature range. Therefore, in the process of adjusting the gas proportional valve opening and the water pump power, the preset return water temperature range and the exhaust gas temperature range are used as limiting conditions to ensure that the heating return water temperature T3′ and the exhaust gas temperature T1 are both within the preset temperature range. Ultimately, it can be ensured that the exhaust gas temperature T1 can be higher than the lower limit of the preset exhaust gas temperature range, and the lower limit of the preset exhaust gas temperature range is higher than the dew point temperature of the flue gas. Therefore, it can avoid the generation of condensed water in the main heat exchanger due to the exhaust gas temperature T1 being lower than the dew point temperature of the flue gas.

[0044] Figure 2 This is a flow chart of a gas wall-mounted boiler control method provided by an embodiment of the present invention. In an optional embodiment, as Figure 2 As shown, the gas proportional valve opening and the water pump power are adjusted according to the heating return water temperature T3′, the preset return water temperature range, the exhaust gas temperature T1 and the preset exhaust gas temperature range, including:

[0045] S201. Determine whether the current heating return water temperature T3′ is within a preset return water temperature range.

[0046] In this embodiment, the heating return water temperature T3′ and the exhaust gas temperature T1 are adjusted in turn. First, it is determined whether the current heating return water temperature T3′ is within the preset return water temperature range. If not, S202 is executed to adjust the heating return water temperature T3′. If so, S203 is executed, and the rationality of the exhaust gas temperature T1 is judged in subsequent steps.

[0047] S202. Adjust the gas proportional valve opening and the water pump power according to the relationship between the heating return water temperature T3′ and the boundary value of the preset return water temperature range.

[0048] S202 is to adjust the gas proportional valve opening and the water pump power based on the preset return water temperature range, so that the heating return water temperature T3' is within the preset return water temperature range.

[0049] In an optional example, S202 includes: when the heating return water temperature T3′ is lower than the lower limit of the preset return water temperature range, increasing the opening of the gas proportional valve and returning to execute the first judgment step; when the heating return water temperature T3′ is greater than the upper limit of the preset return water temperature range, increasing the water pump power and returning to execute S201.

[0050] In the present invention, when the heating return water temperature T3' is higher than the lower limit of the preset return water temperature range, the exhaust gas temperature T1 is higher than the lower limit of the preset exhaust gas temperature range. When the heating return water temperature T3' is lower than the lower limit of the preset return water temperature range, it cannot be guaranteed that the exhaust gas temperature T1 can be higher than the lower limit of the preset exhaust gas temperature range, and there is a risk of condensed water being generated at the main heat exchanger. Therefore, when the heating return water temperature T3' is lower than the lower limit of the preset return water temperature range, considering that the heating environment temperature T0' has been detected before S202, and / or the heating outlet water temperature T2' meets the heating operation conditions, that is, there is insufficient heating, it can be determined that the low combustion power and low flue gas temperature cause at least one of the heating environment temperature T0' and the heating outlet water temperature T2' and the heating return water temperature T3' to be overall low. Therefore, the gas proportional valve opening is increased to increase the combustion power, thereby solving the problem from the heat source. In addition, after increasing the opening of the gas proportional valve, the heating water outlet temperature T2′ and the heating environment temperature T0′ will increase directly or indirectly. Therefore, after increasing the opening of the gas proportional valve, it is necessary to return to the first judgment step to detect the necessity of heating operation.

[0051] On the other hand, when the heating return water temperature is higher than the upper limit of the preset return water temperature range, it means that the heat exchange efficiency of the whole machine is low, mainly because the heat exchange rate between the heating system and the heating outlet water is slow. Therefore, increasing the water pump power can increase the flow rate of the heating outlet water, thereby improving the heat exchange efficiency of the whole machine. In this way, the heat exchange efficiency of the whole machine can be guaranteed. After increasing the water pump power (which can be after the gas wall-mounted boiler has been running stably for 2 minutes), return to execute S201 again to continue to detect whether the heating return water temperature T3' is within the preset return water temperature range. Optionally, after increasing the water pump power, the heating environment temperature T0' will increase due to the increase in heat exchange efficiency. Therefore, after increasing the water pump power, you can also return to execute the first judgment step to detect the necessity of heating operation.

[0052] S203. After a preset time, detect the current heating environment temperature T0′ and / or the heating water outlet temperature T2′, and execute the second judgment step. The second judgment step is to judge whether the gas wall-mounted boiler meets the heating operation conditions based on the current heating environment temperature T0′ and / or the heating water outlet temperature T2′.

[0053] The second judgment step is similar to the first judgment step, and for details, please refer to the relevant description of the first judgment step.

[0054] In step S203, it is determined that the heating return water temperature T3' is within the preset return water temperature range. However, the water pump power may have been increased before S203. When the water pump power increases while other conditions remain unchanged, the heat exchange efficiency increases, the heating environment temperature T0' will rise, and the heating outlet water temperature T2' will decrease. Therefore, after a preset period of time, the second step is executed. When the heating environment temperature T0' and the heating outlet water temperature T2' tend to stabilize, they are tested again to determine whether the gas wall-mounted boiler meets the heating operating conditions. If not, the process proceeds to step S204 to continue adjusting the exhaust gas temperature T1. If so, the process proceeds to step S205 to control the gas wall-mounted boiler to stop operation.

[0055] S204, the gas wall-mounted boiler stops running.

[0056] S205 , adjusting the gas proportional valve opening and the water pump power according to the exhaust gas temperature T1 and the preset exhaust gas temperature range.

[0057] S205 is to adjust the gas proportional valve opening and the water pump power based on the preset exhaust temperature range, so that the exhaust temperature T1 is within the preset exhaust temperature range.

[0058] In an optional example, S205 includes: determining whether the current exhaust temperature T1 is within a preset exhaust temperature range; if so, increasing the gas proportional valve opening; if not, adjusting the gas proportional valve opening and water pump power according to the size relationship between the exhaust temperature T1 and the boundary value of the preset exhaust temperature range.

[0059] In step S205, it has been detected that the heating environment temperature T0' and / or the heating water outlet temperature T2' meet the heating operation conditions (ie, at least one is lower than the set value), that is, the heating is insufficient.

[0060] When the exhaust gas temperature T1 is within the preset exhaust gas temperature range, it can be determined that insufficient heating is caused by low combustion power and low flue gas temperature. At this time, the exhaust gas temperature T1 is within the preset exhaust gas temperature range, indicating that there is room for the flue gas temperature to increase. Therefore, the gas proportional valve opening is increased to increase the combustion power and thus the flue gas temperature, so that the heating environment temperature T0' and / or the heating water outlet temperature T2' can reach the corresponding set temperature. After increasing the gas proportional valve opening, the heating water outlet temperature T2' and the heating environment temperature T0' will directly or indirectly increase. Therefore, after increasing the gas proportional valve opening, it is necessary to return to the second judgment step to detect the necessity of heating operation.

[0061] If the exhaust temperature T1 is not within the preset exhaust temperature range, the gas proportional valve opening and the water pump power are adjusted based on the relationship between the exhaust temperature T1 and the boundary value of the preset exhaust temperature range. Specifically, when the exhaust temperature T1 is less than the lower limit of the preset exhaust temperature range, the water pump power is reduced. The process then returns to the second determination step. When the exhaust temperature T1 is greater than the upper limit of the preset exhaust temperature range, the water pump power is increased, and the process then returns to the step (S201) of determining whether the current heating return water temperature T3′ is within the preset return water temperature range.

[0062] When the exhaust gas temperature T1 is less than the lower limit of the preset exhaust gas temperature range, in order to avoid the risk of condensation and from the perspective of reducing energy consumption, the water pump power is first considered to be reduced. Reducing the water pump power can increase the heating return water temperature T3' and thus increase the exhaust gas temperature T1. After reducing the water pump power, the process returns to the second determination step for subsequent adjustment. Optionally, since reducing the water pump power can increase the heating return water temperature T3', after reducing the water pump power, the process can also return to the step of determining whether the current heating return water temperature T3' is within the preset return water temperature range (S201).

[0063] If the exhaust gas temperature T1 exceeds the upper limit of the preset exhaust gas temperature range, the heat exchange efficiency is low. Therefore, the water pump power is increased to improve the heat exchange efficiency. Increasing the water pump power will reduce the heating return water temperature T3'. Therefore, after increasing the water pump power, the process returns to step S201 to determine whether the current heating return water temperature T3' is within the preset return water temperature range.

[0064] In an optional example, when the exhaust gas temperature T1 is lower than the lower limit of the preset exhaust gas temperature range, it also includes: judging whether the current water pump power is the minimum power; if so, executing the step of increasing the proportional valve opening; if not, executing the step of reducing the water pump power.

[0065] The pump power has a certain linear adjustment range. When the pump power drops to the minimum, reducing the pump power is no longer applicable. Therefore, increasing the proportional valve opening to increase the exhaust gas temperature T1 is used. It should be noted that the initial pump power is usually in the middle of the linear adjustment range, that is, there is room for adjustment.

[0066] Optionally, when reducing the water pump power, P1 = (1-2%) P0, P0 is the initial water pump power, and P1 is the adjusted (reduced) water pump power.

[0067] Optionally, when increasing the water pump power, P1 = (1 + 2.5%) P0, where P0 is the initial water pump power and P1 is the adjusted (increased) water pump power.

[0068] In order to clearly describe the gas wall-mounted boiler control method of the present invention, Figure 3 and the following examples to illustrate. Figure 3 FIG. 1 is a flow chart of a gas wall-mounted boiler control method, as shown in FIG. Figure 3 As shown, the gas wall-mounted boiler control method of the present invention includes:

[0069] S1. Start.

[0070] S2. The whole machine is running, the water pump power is P0, and T0′ and T2′ are detected.

[0071] T0′ is the heating environment temperature, and T2′ is the heating water outlet temperature.

[0072] S3. Determine whether T0′<T0 or T2′<T2; if so, execute S4; if not, execute S12 and stop the whole machine; T0 and T2 are both corresponding set temperatures, which can be set by the user or a default value.

[0073] S4. Detect T3'. T3' is the heating return water temperature.

[0074] S5.1, T3′<T3 min , then execute S6.1.

[0075] S5.2, T3 min ≤T3′≤T3 max , then execute S6.2 after S5.2.

[0076] S5.3, T3′>T3 max , then return to execute S4.

[0077] The above T3 min 、T3 max They are the lower and upper limits of the preset return water temperature range. min 、T3 max 40℃ and 50℃ respectively.

[0078] S6.1. Increase the (gas) proportional valve opening. After S6.1, return to S3.

[0079] S6.2. Keep the water pump power P0 unchanged and execute S7 after S6.2.

[0080] S6.3. Increase the water pump power and execute S4 after S6.3.

[0081] S7. Determine whether T0′<T0 or T2′<T2; if so, execute S8; if not, execute S12 to stop the entire machine.

[0082] S8. Detect T1. T1 is the exhaust gas temperature.

[0083] S9.1, T1<T1 min , then go to S10.1.

[0084] S9.2, T1 min ≤T1≤T1 max , go to S10.2.

[0085] S9.3, T1>T1 max , then execute S6.3.

[0086] T1 mentioned above min 、T1 max They are the lower and upper limits of the preset exhaust temperature range. min 、T1 max 110℃ and 120℃ respectively.

[0087] S10.1. Reduce the water pump power. Execute S11 after S10.1.

[0088] S10.2: Increase the proportional valve opening. After S10.2, return to S7.

[0089] S11. Determine whether the water pump power is the minimum value. If so, execute S10.2; if not, return to execute S7.

[0090] S12. Stop running.

[0091] This embodiment first determines the rationality of the heating return water temperature T3' within a preset return water temperature range and then adjusts it. When the heating return water temperature T3' returns to the preset return water temperature range, the gas proportional valve opening and water pump power are adjusted based on the exhaust gas temperature T1 and the preset exhaust gas temperature range. This prevents condensation in the main heat exchanger caused by excessively low heating return water temperature T3' or exhaust gas temperature T1. It also prevents low overall thermal efficiency caused by excessively high heating return water temperature T3' or exhaust gas temperature T1. Overall, this ensures optimal overall performance and heat exchange efficiency while meeting heating needs.

[0092] Corresponding to the above-mentioned gas wall-mounted boiler control method, the present invention also provides a gas wall-mounted boiler, which includes a main controller, Figure 4 This is a schematic diagram of the structure of a main controller in a gas wall-mounted boiler provided by an embodiment of the present invention. Figure 4 As shown, the main controller includes:

[0093] The first detection module 100 is used to detect the current heating environment temperature T0′ and / or the heating water outlet temperature T2′ after the gas wall-mounted boiler is in operation, and execute a first judgment step, wherein the first judgment step is to determine whether the gas wall-mounted boiler meets the heating operation conditions based on the current heating environment temperature T0′ and / or the heating water outlet temperature T2′; if not, the contents of the stopping module are executed; if so, the contents of the adjusting module are executed;

[0094] The stop operation module 200 is used to stop the gas wall-mounted boiler;

[0095] The adjustment module 300 is used to adjust the gas proportional valve opening and the water pump power according to the heating return water temperature T3′, the preset return water temperature range, the exhaust gas temperature T1 and the preset exhaust gas temperature range, so that the heating return water temperature T3′ is within the preset return water temperature range and the exhaust gas temperature T1 is within the preset exhaust gas temperature range. When the heating return water temperature T3′ is higher than the lower limit of the preset return water temperature range, the exhaust gas temperature T1 is higher than the lower limit of the preset exhaust gas temperature range, and the lower limit of the preset exhaust gas temperature range is higher than the dew point temperature of the flue gas.

[0096] Optionally, the first detection module 100 is configured to perform the following steps:

[0097] Determine whether the heating environment temperature T0′ is greater than the ambient heating temperature setting value T0 or the heating water outlet temperature T2′ is greater than the water outlet temperature setting value T2;

[0098] If so, the heating operation conditions are not met;

[0099] If not, the heating operation conditions are met.

[0100] Optionally, the adjustment module 300 includes:

[0101] The first temperature judgment submodule is used to judge whether the current heating return water temperature T3′ is within the preset return water temperature range; if not, the content of the first adjustment submodule is executed; if so, the content of the detection submodule is executed;

[0102] The first regulating submodule is used to regulate the gas proportional valve opening and the water pump power according to the relationship between the heating return water temperature T3′ and the boundary value of the preset return water temperature range;

[0103] The detection submodule is used to detect the current heating environment temperature T0′ and / or the heating water outlet temperature T2′ after a preset time period, and execute the second judgment step, which is to judge whether the gas wall-mounted boiler meets the heating operation conditions based on the current heating environment temperature T0′ and / or the heating water outlet temperature T2′; if not, the content of the operation module 200 is stopped; if so, the content of the second adjustment submodule is executed;

[0104] The second regulating submodule is used to regulate the gas proportional valve opening and the water pump power according to the exhaust gas temperature T1 and the preset exhaust gas temperature range.

[0105] Optionally, the first regulating submodule is configured to perform the following steps:

[0106] When the heating return water temperature T3′ is lower than the lower limit of the preset return water temperature range, the gas proportional valve opening is increased, and the process returns to executing the content of the first detection module 100;

[0107] When the heating return water temperature T3′ is greater than the upper limit of the preset return water temperature range, the water pump power is increased and the process returns to the content of the first temperature judgment submodule.

[0108] Optionally, the second regulating submodule includes:

[0109] The first temperature judgment unit is used to judge whether the current exhaust temperature T1 is within the preset exhaust temperature range; if so, the content of the first adjustment unit is executed; if not, the content of the second adjustment unit is executed;

[0110] The first regulating unit is used to increase the opening of the gas proportional valve;

[0111] The second regulating unit is used to regulate the opening of the gas proportional valve and the water pump power according to the relationship between the exhaust gas temperature T1 and the boundary value of the preset exhaust gas temperature range.

[0112] Optionally, the second adjusting unit includes:

[0113] The first water pump power adjustment subunit is used to reduce the water pump power when the exhaust gas temperature T1 is lower than the lower limit of the preset exhaust gas temperature range, and return to execute the content of the detection submodule;

[0114] The second water pump power regulating sub-unit is used to increase the water pump power when the exhaust gas temperature T1 is greater than the upper limit of the preset exhaust gas temperature range, and return to execute the content of the first temperature judgment sub-module.

[0115] Optionally, the second adjusting unit further includes:

[0116] The minimum power judgment subunit is used to judge whether the current water pump power is the minimum power when the exhaust temperature T1 is less than the lower limit of the preset exhaust temperature range; if so, execute the content of the first adjustment unit; if not, execute the content of the first water pump power adjustment subunit.

[0117] The gas wall-mounted boiler provided in the embodiment of the present invention can execute the gas wall-mounted boiler control method provided in any embodiment of the present invention, and has the corresponding functional modules and beneficial effects of the execution method.

[0118] Figure 5 A schematic diagram of an electronic device 40 that can be used to implement an embodiment of the present invention is shown. The electronic device is intended to represent various forms of digital computers. The electronic device can also represent various forms of mobile devices, such as personal digital assistants and other similar computing devices. The components shown herein, their connections and relationships, and their functions are merely examples and are not intended to limit the implementation of the present invention described and / or claimed herein.

[0119] like Figure 5 As shown, the electronic device 40 includes at least one processor 41 and a memory, such as a read-only memory (ROM) 42, a random access memory (RAM) 43, etc., which is communicatively connected to the at least one processor 41. The memory stores a computer program that can be executed by the at least one processor, and the processor 41 can perform various appropriate actions and processes according to the computer program stored in the read-only memory (ROM) 42 or the computer program loaded from the storage unit 48 into the random access memory (RAM) 43. Various programs and data required for the operation of the electronic device 40 can also be stored in the RAM 43. The processor 41, ROM 42, and RAM 43 are connected to each other via a bus 44. An input / output (I / O) interface 45 is also connected to the bus 44.

[0120] Multiple components in the electronic device 40 are connected to the I / O interface 45, including an input unit 46; an output unit 47, such as various types of displays, speakers, etc.; a storage unit 48, such as a magnetic disk, an optical disk, etc.; and a communication unit 49, such as a network card, a modem, a wireless communication transceiver, etc. The communication unit 49 allows the electronic device 40 to exchange information / data with other devices via a computer network such as the Internet and / or various telecommunication networks.

[0121] Processor 41 can be any general-purpose and / or specialized processing component with processing and computing capabilities. Some examples of processor 41 include, but are not limited to, a central processing unit (CPU), a graphics processing unit (GPU), various specialized artificial intelligence (AI) computing chips, various processors running machine learning model algorithms, digital signal processors (DSPs), and any suitable processor, controller, microcontroller, etc. Processor 41 executes the various methods and processes described above, such as the gas boiler control method.

[0122] In some embodiments, the gas wall-mounted boiler control method can be implemented as a computer program, which is tangibly contained in a computer-readable storage medium, such as a storage unit 48. In some embodiments, part or all of the computer program can be loaded and / or installed on the electronic device 40 via the ROM 42 and / or the communication unit 49. When the computer program is loaded into the RAM 43 and executed by the processor 41, one or more steps of the gas wall-mounted boiler control method described above can be performed. Alternatively, in other embodiments, the processor 41 can be configured to execute the gas wall-mounted boiler control method in any other appropriate manner (for example, by means of firmware).

[0123] Various embodiments of the systems and techniques described above can be implemented in digital electronic circuit systems, integrated circuit systems, field programmable gate arrays (FPGAs), application specific integrated circuits (ASICs), application specific standard products (ASSPs), system-on-chip systems (SOCs), complex programmable logic devices (CPLDs), computer hardware, firmware, software, and / or combinations thereof. These various embodiments can include being implemented in one or more computer programs that are executable and / or interpreted on a programmable system that includes at least one programmable processor, which can be a special purpose or general purpose programmable processor that can receive data and instructions from a storage system, at least one input device, and at least one output device, and transmit data and instructions to the storage system, the at least one input device, and the at least one output device.

[0124] Computer programs for implementing the methods of the present invention may be written in any combination of one or more programming languages. These computer programs may be provided to a processor of a general-purpose computer, a special-purpose computer, or other programmable data processing device, such that when the computer program is executed by the processor, the functions / operations specified in the flowcharts and / or block diagrams are implemented. The computer program may be executed entirely on the machine, partially on the machine, as a stand-alone software package, partially on the machine and partially on a remote machine, or entirely on a remote machine or server.

[0125] In the context of the present invention, a computer readable storage medium may be a tangible medium that can contain or store a computer program for use by or in connection with an instruction execution system, apparatus, or device.

[0126] To provide interaction with a user, the systems and techniques described herein can be implemented on an electronic device having: a display device (e.g., a monitor with a cathode ray tube or a liquid crystal display) for displaying information to the user; and a keyboard and pointing device (e.g., a mouse or trackball) through which the user can provide input to the electronic device.

[0127] It should be understood that the various forms of the processes shown above can be used to reorder, add, or delete steps. For example, the steps described in the present invention can be performed in parallel, sequentially, or in a different order, as long as the desired results of the technical solution of the present invention can be achieved. This is not limited herein.

[0128] The above specific embodiments do not limit the scope of protection of the present invention. Those skilled in the art will appreciate that various modifications, combinations, sub-combinations, and substitutions may be made based on design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention are intended to be included within the scope of protection of the present invention.

Claims

1. A gas wall-mounted boiler control method, characterized in that: include: After the gas wall-mounted boiler is in operation, the current heating environment temperature T0′ and / or the heating water outlet temperature T2′ are detected, and a first judgment step is performed, wherein the first judgment and detection step is to judge whether the gas wall-mounted boiler meets the heating operation conditions based on the current heating environment temperature T0′ and / or the heating water outlet temperature T2′; If not, the gas wall-mounted boiler stops running; If so, the gas proportional valve opening and the water pump power are adjusted according to the heating return water temperature T3′, the preset return water temperature range, the exhaust gas temperature T1 and the preset exhaust gas temperature range, so that the heating return water temperature T3′ is within the preset return water temperature range and the exhaust gas temperature T1 is within the preset exhaust gas temperature range; when the heating return water temperature T3′ is higher than the lower limit of the preset return water temperature range, the exhaust gas temperature T1 is higher than the lower limit of the preset exhaust gas temperature range, and the lower limit of the preset exhaust gas temperature range is higher than the dew point temperature of the flue gas.

2. The method according to claim 1, wherein The first determination step includes: Determine whether the heating environment temperature T0′ is greater than the ambient heating temperature setting value T0 or the heating water outlet temperature T2′ is greater than the water outlet temperature setting value T2; If so, the heating operation conditions are not met; If not, the heating operation conditions are met.

3. The method according to claim 1, wherein The adjustment of the gas proportional valve opening and the water pump power according to the heating return water temperature T3′, the preset return water temperature range, the exhaust gas temperature T1 and the preset exhaust gas temperature range includes: Determine whether the current heating return water temperature T3' is within the preset return water temperature range; If not, the gas proportional valve opening and the water pump power are adjusted according to the relationship between the heating return water temperature T3′ and the boundary value of the preset return water temperature range; If so, after a preset time, the current heating environment temperature T0′ and / or the heating water outlet temperature T2′ are detected, and a second judgment step is performed, wherein the second judgment step is to judge whether the gas wall-mounted boiler meets the heating operation conditions based on the current heating environment temperature T0′ and / or the heating water outlet temperature T2′; If not, the gas wall-mounted boiler stops running; If so, the gas proportional valve opening and the water pump power are adjusted according to the exhaust gas temperature T1 and the preset exhaust gas temperature range.

4. The method according to claim 3, wherein The adjusting of the gas proportional valve opening and the water pump power according to the relationship between the heating return water temperature T3′ and the boundary value of the preset return water temperature range includes: When the heating return water temperature T3′ is lower than the lower limit of the preset return water temperature range, the gas proportional valve opening is increased, and the process returns to the first judgment step; When the heating return water temperature T3′ is greater than the upper limit of the preset return water temperature range, the water pump power is increased, and the process returns to the step of determining whether the current heating return water temperature T3′ is within the preset return water temperature range.

5. The method according to claim 3, wherein The adjusting of the gas proportional valve opening and the water pump power according to the exhaust gas temperature T1 and the preset exhaust gas temperature range includes: Determine whether the current exhaust temperature T1 is within the preset exhaust temperature range; If yes, increase the gas proportional valve opening; If not, the gas proportional valve opening and the water pump power are adjusted according to the relationship between the exhaust gas temperature T1 and the boundary value of the preset exhaust gas temperature range.

6. The method according to claim 5, wherein The adjusting of the gas proportional valve opening and the water pump power according to the relationship between the exhaust gas temperature T1 and the boundary value of the preset exhaust gas temperature range includes: When the exhaust gas temperature T1 is lower than the lower limit of the preset exhaust gas temperature range, the water pump power is reduced, and the process returns to the second judgment step; When the exhaust gas temperature T1 is greater than the upper limit of the preset exhaust gas temperature range, the water pump power is increased, and the process returns to the step of determining whether the current heating return water temperature T3' is within the preset return water temperature range.

7. The method according to claim 6, wherein When the exhaust gas temperature T1 is lower than the lower limit of the preset exhaust gas temperature range, the method further includes: Determine whether the current water pump power is the minimum power; If yes, then the step of increasing the opening of the gas proportional valve is executed; If not, the step of reducing the water pump power is performed.

8. A gas wall-mounted boiler, characterized in that: The main controller includes: A first detection module is configured to detect the current heating environment temperature T0′ and / or the heating water outlet temperature T2′ after the gas wall-mounted boiler is in operation, and execute a first judgment step, wherein the first judgment step is to determine whether the gas wall-mounted boiler meets the heating operation conditions based on the current heating environment temperature T0′ and / or the heating water outlet temperature T2′; if not, the contents of the stopping module are executed; if so, the contents of the adjusting module are executed; Stop operation module, used to stop the gas wall-mounted boiler; The adjustment module is used to adjust the gas proportional valve opening and the water pump power according to the heating return water temperature T3′, the preset return water temperature range, the exhaust gas temperature T1 and the preset exhaust gas temperature range, so that the heating return water temperature T3′ is within the preset return water temperature range and the exhaust gas temperature T1 is within the preset exhaust gas temperature range. When the heating return water temperature T3′ is higher than the lower limit of the preset return water temperature range, the exhaust gas temperature T1 is higher than the lower limit of the preset exhaust gas temperature range, and the lower limit of the preset exhaust gas temperature range is higher than the dew point temperature of the flue gas.

9. An electronic device, characterized in that: The electronic device comprises: at least one processor; and a memory communicatively connected to the at least one processor; wherein, The memory stores a computer program that can be executed by the at least one processor. The computer program is executed by the at least one processor so that the at least one processor can execute the gas wall-mounted boiler control method according to any one of claims 1 to 7.

10. A computer-readable storage medium, characterized in that The computer-readable storage medium stores computer instructions, and the computer instructions are used to enable a processor to implement the gas wall-mounted boiler control method according to any one of claims 1 to 7 when executed.

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