Falling detection method and system of wall-hanging stove temperature sensor, wall-hanging stove and medium

Abstract

The invention discloses a wall-hanging stove temperature sensor falling detection method and system, a wall-hanging stove and a medium. The falling detection method comprises the steps that when it is detected that the water outlet temperature of a heating water outlet pipe meets a combustion starting temperature threshold value, the combustion function and the falling detection function of the wall-hanging stove are controlled to be started; when the falling-off detection function is in a conventional detection mode, the wall-hanging stove is controlled to conduct combustion operation in three continuous first preset time periods at the first combustion load, the second combustion load and the third combustion load, and falling-off detection is conducted according to the outlet water temperature change value of the temperature sensor; and when the falling-off detection function is in a water pump detection mode, after the wall-hanging stove is controlled to burn and operate within a first preset duration at a first combustion load and the water pump circulation function is started, falling-off detection is conducted according to the water outlet temperature change value of the temperature sensor. The machine load is actively adjusted, whether the temperature sensor is in the falling state or not is judged according to the change value of the heating water outlet temperature, and the falling detection accuracy is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of wall-mounted boilers, and in particular to a method and system for detecting the shedding of a wall-mounted boiler temperature sensor, a wall-mounted boiler and a medium. Background Art

[0002] Wall-mounted boilers usually detect the heating water outlet temperature by arranging pipe-clamp temperature sensors. The temperature sensor is directly clamped on the heating water outlet pipe, which is simple to assemble and has no risk of water leakage.

[0003] However, since the temperature sensor is an external component, it may fall off during a collision. When the temperature sensor falls off, the machine cannot detect the temperature of the heating water outlet and shut down in time. The machine load continues to increase, the heating water outlet temperature continues to rise, and eventually the high-temperature water triggers the temperature relay to trip, and the machine will shut down, posing a safety risk. Summary of the invention

[0004] The technical problem to be solved by the present invention is to overcome the defect in the prior art that the detachment of the temperature sensor of a wall-mounted boiler cannot be accurately detected, and to provide a detachment detection method and system for the temperature sensor of a wall-mounted boiler, a wall-mounted boiler and a medium.

[0005] The present invention solves the above technical problems through the following technical solutions:

[0006] In a first aspect, the present invention provides a method for detecting the detachment of a temperature sensor of a wall-mounted boiler, wherein the temperature sensor is arranged on a heating water outlet pipe of the wall-mounted boiler, and the detachment detection method comprises:

[0007] When it is detected that the water outlet temperature of the heating water outlet pipe meets the combustion start temperature threshold, the combustion function and the shedding detection function of the wall-mounted boiler are controlled to be started;

[0008] When the shedding detection function is in the conventional detection mode, the wall-mounted boiler is controlled to burn and operate at the first combustion load, the second combustion load and the third combustion load within three consecutive first preset time periods, and the shedding detection is performed according to the change value of the outlet water temperature of the temperature sensor;

[0009] When the shedding detection function is in the water pump detection mode, after controlling the wall-mounted boiler to burn at the first combustion load within the first preset time and starting the water pump circulation function, shedding detection is performed according to the change value of the water outlet temperature of the temperature sensor.

[0010] Preferably, the step of controlling the wall-mounted boiler to burn and operate at the first combustion load, the second combustion load and the third combustion load within three consecutive first preset time periods, and performing the shedding detection according to the outlet water temperature change value of the temperature sensor includes:

[0011] After controlling the wall-mounted boiler to burn at the first combustion load for the first preset time, detecting whether a first outlet water temperature change value of the temperature sensor is greater than a preset threshold;

[0012] If not, after controlling the wall-mounted boiler to operate at the second combustion operation load for the first preset time, detecting whether the second outlet water temperature change value of the temperature sensor is greater than the preset threshold;

[0013] If not, after controlling the wall-mounted boiler to operate at the third combustion operation load for the first preset time, detecting whether the third outlet water temperature change value of the temperature sensor is greater than the preset threshold;

[0014] If not, it is determined that the temperature sensor is loose;

[0015] Among them, the first water outlet temperature change value is calculated by the first water outlet temperature of the temperature sensor before combustion at the first combustion load and the current water outlet temperature; the second water outlet temperature change value is calculated by the second water outlet temperature of the temperature sensor before combustion at the second combustion load and the current water outlet temperature; the third water outlet temperature change value is calculated by the third water outlet temperature of the temperature sensor before combustion at the third combustion load and the current water outlet temperature; the second combustion load is greater than the first combustion load, and the first combustion load is greater than the third combustion load.

[0016] Preferably, after controlling the wall-mounted boiler to burn at the first combustion load within the first preset time and starting the water pump circulation function, the step of performing a shedding detection according to the outlet water temperature change value of the temperature sensor includes:

[0017] After controlling the wall-mounted boiler to operate at the first combustion load for the first preset time, detecting whether a first outlet water temperature change value of the temperature sensor is greater than a preset threshold;

[0018] If not, start the water pump circulation function, and control the water pump of the wall-mounted boiler to stop after running for a second preset time;

[0019] After continuing to control the wall-mounted boiler to burn at the first combustion load for the first preset time, detecting whether the fourth outlet water temperature change value of the temperature sensor is greater than the preset threshold;

[0020] If not, it is determined that the temperature sensor is loose;

[0021] Among them, the first water outlet temperature change value is calculated by the first water outlet temperature of the temperature sensor before combustion at the first combustion load and the current water outlet temperature; the fourth water outlet temperature change value is calculated by the fourth water outlet temperature of the temperature sensor before combustion again at the first combustion load and the current water outlet temperature.

[0022] Preferably, the combustion start temperature threshold is the difference between the heating set temperature and the return temperature;

[0023] and / or,

[0024] The step of controlling the wall-mounted boiler to burn and operate at the first combustion load, the second combustion load and the third combustion load within three consecutive first preset time periods, and performing the shedding detection according to the outlet water temperature change value of the temperature sensor, further includes:

[0025] When the first outlet water temperature change value, the second outlet water temperature change value, or the third outlet water temperature change value is greater than the preset threshold, it is determined that the temperature sensor is not loose.

[0026] In a second aspect, the present invention provides a wall-mounted boiler temperature sensor detachment detection system, wherein the temperature sensor is arranged on a heating water outlet pipe of the wall-mounted boiler, and the detachment detection system comprises:

[0027] A control module, configured to control the start-up of the combustion function and the fall-off detection function of the wall-mounted boiler when it is detected that the outlet water temperature of the heating outlet pipe meets the combustion start-up temperature threshold;

[0028] A first detection module is used to control the wall-mounted boiler to burn and operate at a first combustion load, a second combustion load and a third combustion load within three consecutive first preset time periods when the fall-off detection function is in a conventional detection mode, and to perform fall-off detection according to a change value of the outlet water temperature of the temperature sensor;

[0029] The second detection module is used to control the wall-mounted boiler to burn at the first combustion load within the first preset time period and start the water pump circulation function when the shedding detection function is in the water pump detection mode, and then perform shedding detection according to the change value of the water outlet temperature of the temperature sensor.

[0030] Preferably, the first detection module includes:

[0031] A first detection unit is used to control the wall-mounted boiler to burn at the first combustion load for the first preset time, and then detect whether the first outlet water temperature change value of the temperature sensor is greater than a preset threshold; if not, calling the second detection unit;

[0032] The second detection unit is used to control the wall-mounted boiler to operate at the second combustion operation load for the first preset time, and then detect whether the second outlet water temperature change value of the temperature sensor is greater than the preset threshold; if not, call the third detection unit;

[0033] The third detection unit is used to control the wall-mounted boiler to operate at the third combustion operation load for the first preset time, and then detect whether the third outlet water temperature change value of the temperature sensor is greater than the preset threshold; if not, call the first determination unit;

[0034] The first determination unit is used to determine whether the temperature sensor is loose;

[0035] Among them, the first water outlet temperature change value is calculated by the first water outlet temperature of the temperature sensor before combustion at the first combustion load and the current water outlet temperature; the second water outlet temperature change value is calculated by the second water outlet temperature of the temperature sensor before combustion at the second combustion load and the current water outlet temperature; the third water outlet temperature change value is calculated by the third water outlet temperature of the temperature sensor before combustion at the third combustion load and the current water outlet temperature; the second combustion load is greater than the first combustion load, and the first combustion load is greater than the third combustion load.

[0036] Preferably, the second detection module comprises:

[0037] A fourth detection unit is used to control the wall-mounted boiler to operate at the first combustion load for the first preset time, and then detect whether the first outlet water temperature change value of the temperature sensor is greater than the preset threshold; if not, call the first starting unit;

[0038] The first starting unit is used to start the water pump circulation function and control the water pump of the wall-mounted boiler to stop after running for a second preset time;

[0039] a fifth detection unit, configured to detect whether a fourth outlet water temperature change value of the temperature sensor is greater than the preset threshold value after continuing to control the wall-mounted boiler to burn at the first combustion load for the first preset time period; if not, calling the second determination unit;

[0040] The second determination unit is used to determine whether the temperature sensor is loose;

[0041] Among them, the first water outlet temperature change value is calculated by the first water outlet temperature of the temperature sensor before combustion at the first combustion load and the current water outlet temperature; the fourth water outlet temperature change value is calculated by the fourth water outlet temperature of the temperature sensor before combustion again at the first combustion load and the current water outlet temperature.

[0042] Preferably, the combustion start temperature threshold is the difference between the heating set temperature and the return temperature;

[0043] and / or,

[0044] The first detection module also includes:

[0045] The third determination unit is configured to determine that the temperature sensor is not loose when the first outlet water temperature change value, the second outlet water temperature change value or the third outlet water temperature change value is greater than the preset threshold.

[0046] In a third aspect, the present invention further provides a wall-mounted boiler, comprising a processor, a memory, and a computer program stored in the memory and executable on the processor, wherein when the computer program is executed by the processor, the method for detecting the detachment of the wall-mounted boiler temperature sensor as described in the first aspect is implemented.

[0047] In a fourth aspect, the present invention further provides a computer-readable storage medium storing a computer program, which, when executed by a processor, implements the method for detecting the detachment of a wall-mounted boiler temperature sensor as described in the first aspect.

[0048] The positive progressive effect of the present invention is that it provides a method, system, wall-mounted boiler and medium for detecting the detachment of a wall-mounted boiler temperature sensor. By actively adjusting the combustion load of the wall-mounted boiler or starting the water pump circulation function, it is judged whether the temperature sensor is in a detached state according to the change value of the heating water outlet temperature, thereby improving the accuracy of the detachment detection, expanding the detachment detection method, and effectively preventing the temperature sensor from feeding back erroneous temperature data, or even causing the machine to be unable to shut down. The safety and reliability of the wall-mounted boiler operation are effectively guaranteed, and the user experience is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] Figure 1 This is the first flow chart of the method for detecting the detachment of the wall-mounted boiler temperature sensor according to Example 1 of the present invention.

[0050] Figure 2 This is a second flow chart of the method for detecting the detachment of the wall-mounted boiler temperature sensor according to Example 1 of the present invention.

[0051] Figure 3 This is the third flow chart of the method for detecting the detachment of the wall-mounted boiler temperature sensor according to Example 1 of the present invention.

[0052] Figure 4 This is a schematic diagram of the first module of the wall-mounted boiler temperature sensor detachment detection system of Example 2 of the present invention.

[0053] Figure 5 This is a schematic diagram of the second module of the wall-mounted boiler temperature sensor detachment detection system of Example 2 of the present invention.

[0054] Figure 6 This is a schematic diagram of the hardware structure of the wall-mounted boiler of Example 3 of the present invention. DETAILED DESCRIPTION

[0055] The present invention is further described below by way of examples, but the present invention is not limited to the scope of the examples.

[0056] Example 1

[0057] This embodiment provides a method for detecting the fall-off of a wall-mounted boiler temperature sensor. Figure 1 As shown, the temperature sensor is arranged on the heating water outlet pipe of the wall-mounted boiler, and the fall-off detection method includes:

[0058] S1. When it is detected that the water outlet temperature of the heating water outlet pipe meets the combustion start temperature threshold, the combustion function and the shedding detection function of the wall-mounted boiler are controlled to start;

[0059] S2. When the shedding detection function is in the conventional detection mode, the wall-mounted boiler is controlled to burn and operate at the first combustion load, the second combustion load and the third combustion load within three consecutive first preset time periods, and the shedding detection is performed according to the change value of the outlet water temperature of the temperature sensor;

[0060] S3. When the shedding detection function is in the water pump detection mode, after controlling the wall-mounted boiler to burn at the first combustion load within the first preset time and starting the water pump circulation function, shedding detection is performed according to the change value of the outlet water temperature of the temperature sensor.

[0061] Among them, the combustion start temperature threshold is the difference between the heating set temperature and the hysteresis temperature.

[0062] For the above step S1, when it is detected that the heating function of the wall-mounted boiler is turned on, and the water outlet temperature of the heating water outlet pipe is less than the difference between the heating set temperature and the return temperature, the combustion start temperature threshold is met. The wall-mounted boiler is controlled to obtain the first water outlet temperature of the temperature sensor before combustion at the first combustion load Q1, and the current water outlet temperature of the temperature sensor detected in real time during the combustion process. After ignition, combustion is carried out at the first combustion load Q1. The first combustion load Q1 is determined according to the load range of the machine. Q1 = Qmin + (Qmax - Qmin) * 50%, the first combustion load Q1 is based on the heating cycle flow L and The product of the temperature rise △T corresponding to the circulation flow L is expressed as: Q=L*△T.

[0063] For the above step S2, when the fall-off detection function is in the normal detection mode, obtain the first outlet water temperature change value of the temperature sensor within the first preset time t1 (for example, 1 minute) when the machine burns with the first combustion load Q1, and compare the first outlet water temperature change value with the preset threshold value. If the condition is not met, continue to increase the combustion load to Q2. Obtain the second outlet water temperature change value of the temperature sensor within the first preset time t1 when the machine burns with the second combustion compliance Q2, and compare the second outlet water temperature change value with the preset threshold value. If the condition is not met, continue to reduce the combustion load to Q3. Obtain the third outlet water temperature change value of the temperature sensor within the first preset time t1 when the machine burns with the third combustion compliance Q2, and compare the third outlet water temperature change value with the preset threshold value. If the condition is not met, it is determined that the temperature sensor of the heating outlet pipe is loose, the machine stops and issues a fault alarm; if the condition is met, it is determined that the temperature sensor of the heating outlet pipe is not loose, and the machine burns normally until the shutdown condition is reached.

[0064] For the above step S3, when the fall-off detection function is in the water pump detection mode, obtain the first outlet water temperature change value of the temperature sensor within the first preset time t1 (for example, 1 minute) when the machine burns at the first combustion load Q1, and compare the first outlet water temperature change value with the preset threshold value. If the condition is not met, the machine stops burning and controls the water pump to circulate for the second preset time t2 (for example, 5 minutes to 10 minutes). Continue to obtain the fourth outlet water temperature change value of the temperature sensor within the first preset time t1 (for example, 1 minute) when the machine burns at the first combustion load Q1, and compare the fourth outlet water temperature change value with the preset threshold value. If the condition is not met, it is determined that the temperature sensor of the heating outlet pipe is loose, the machine stops and issues a fault alarm; if the condition is met, it is determined that the temperature sensor of the heating outlet pipe is not loose, and the machine burns normally until the shutdown condition is reached.

[0065] In one embodiment, Figure 2 As shown, step S2 includes:

[0066] S21, after controlling the wall-mounted boiler to burn at a first combustion load for a first preset time, detecting whether a first outlet water temperature change value of the temperature sensor is greater than a preset threshold; if not, executing step S22; if yes, executing step S242;

[0067] S22, after controlling the wall-mounted boiler to operate at the second combustion operating load for a first preset time, detecting whether the second outlet water temperature change value of the temperature sensor is greater than the preset threshold; if not, executing step S23; if yes, executing step S242;

[0068] S23, after controlling the wall-mounted boiler to operate at the third combustion operating load for the first preset time, detecting whether the third outlet water temperature change value of the temperature sensor is greater than a preset threshold; if not, executing step S241, and if so, executing step S242;

[0069] S241, determining that the temperature sensor is loose;

[0070] S242: Determine whether the temperature sensor is loose.

[0071] Among them, the first water outlet temperature change value is calculated by the first water outlet temperature of the temperature sensor before combustion at the first combustion load and the current water outlet temperature; the second water outlet temperature change value is calculated by the second water outlet temperature of the temperature sensor before combustion at the second combustion load and the current water outlet temperature; the third water outlet temperature change value is calculated by the third water outlet temperature of the temperature sensor before combustion at the third combustion load and the current water outlet temperature; the second combustion load is greater than the first combustion load, and the first combustion load is greater than the third combustion load.

[0072] Under normal circumstances, the outlet water temperature of the machine increases with an increase in the combustion load, and decreases with a decrease in the combustion load. However, the return water temperature of the heating outlet pipe entering the machine may be unstable, with the return water temperature decreasing as the load increases, or the return water temperature increasing as the load decreases, while the outlet water temperature remains unchanged. Therefore, the change in the outlet water temperature of the heating outlet pipe when the combustion load changes only once may lead to misjudgment. By adjusting the combustion load in opposite directions twice and observing the change in the outlet water temperature, misjudgment can be effectively reduced, and whether the temperature sensor of the heating outlet pipe has fallen off can be efficiently detected.

[0073] In this embodiment, the first combustion load Q1, the load change △Q, the temperature change △T0, the second combustion load Q2=Q1+△Q, the third combustion load Q3=Q1-△Q, △Q>L0*△T0, preferably, △Q=L0*(△T0+1), where L0 is the current heating circulation flow rate of the wall-mounted rate, which can be measured by the heating system flow sensor or a larger flow value is pre-determined according to the flow-lift characteristics of the heating circulation pump configured for the wall-mounted boiler to cover the vast majority of heating systems using wall-mounted boilers. After receiving the ignition or combustion load adjustment instruction, the outlet water temperature T of the temperature sensor before the ignition or combustion load change is recorded, the current outlet water temperature T' of the temperature sensor is continuously detected, and the combustion time after the combustion load change is continuously recorded. When the combustion time is less than the first preset time t1, the outlet water temperature change value △T=|T'-T| is calculated based on T and T'. max .

[0074] In one embodiment, Figure 3 As shown, step S3 includes:

[0075] S31, after controlling the wall-mounted boiler to operate at a first combustion load for a first preset time, detecting whether a first outlet water temperature change value of a temperature sensor is greater than a preset threshold; if not, executing step S32;

[0076] S32, starting the water pump circulation function, controlling the water pump of the wall-mounted boiler to stop after running for a second preset time;

[0077] S33, after continuing to control the wall-mounted boiler to burn at the first combustion load for the first preset time, detect whether the fourth outlet water temperature change value of the temperature sensor is greater than a preset threshold; if not, execute step S34;

[0078] S34, determining whether the temperature sensor is loose.

[0079] Among them, the first water outlet temperature change value is calculated by the first water outlet temperature of the temperature sensor before combustion at the first combustion load and the current water outlet temperature; the fourth water outlet temperature change value is calculated by the fourth water outlet temperature of the temperature sensor before combustion again at the first combustion load and the current water outlet temperature.

[0080] In this embodiment, when the first outlet water temperature change value of the temperature sensor is not greater than the preset threshold, the water pump circulation function is started for more than 5 minutes, and then the wall-mounted boiler is controlled to burn at the first combustion load Q1 for the first preset time of 1 minute, and the fourth outlet water temperature change value of the temperature sensor is detected again to be less than the preset threshold, and the temperature sensor is determined to be loose, otherwise, the machine is determined to be working normally until the heating combustion stops. By introducing a circulating water pump to avoid multiple dynamic adjustments to the combustion load, observe the change in the outlet water temperature, effectively reduce misjudgment, and achieve efficient detection of whether the temperature sensor of the heating outlet pipe has fallen off.

[0081] In the present embodiment, a method for detecting the detachment of a temperature sensor of a wall-mounted boiler is provided. By actively adjusting the combustion load of the wall-mounted boiler or starting the water pump circulation function, it is determined whether the temperature sensor is in a detached state according to the change in the heating water outlet temperature, thereby improving the accuracy of the detachment detection and expanding the detachment detection method. This effectively prevents the temperature sensor from feeding back erroneous temperature data, which may even cause the machine to be unable to shut down. This effectively ensures the safety and reliability of the operation of the wall-mounted boiler and improves the user experience.

[0082] Example 2

[0083] This embodiment provides a wall-mounted boiler temperature sensor detachment detection system, such as Figure 4 As shown, the temperature sensor is arranged on the heating water outlet pipe of the wall-mounted boiler, and the fall-off detection system comprises:

[0084] The control module 310 is used to control the combustion function and the shedding detection function of the wall-mounted boiler when it is detected that the water outlet temperature of the heating water outlet pipe meets the combustion start temperature threshold;

[0085] The first detection module 320 is used to control the wall-mounted boiler to burn and operate at the first combustion load, the second combustion load and the third combustion load within three consecutive first preset time periods when the fall-off detection function is in the normal detection mode, and to perform fall-off detection according to the change value of the outlet water temperature of the temperature sensor;

[0086] The second detection module 330 is used to control the wall-mounted boiler to burn at a first combustion load within a first preset time period and start the water pump circulation function when the shedding detection function is in the water pump detection mode, and then perform shedding detection according to the change value of the water outlet temperature of the temperature sensor.

[0087] Among them, the combustion start temperature threshold is the difference between the heating set temperature and the hysteresis temperature.

[0088] When the control module 310 detects that the heating function of the wall-mounted boiler is turned on, and the water outlet temperature of the heating water outlet pipe is less than the difference between the heating set temperature and the hysteresis temperature, the combustion start temperature threshold is met. The wall-mounted boiler is controlled to obtain the first water outlet temperature of the temperature sensor before combustion with the first combustion load Q1, and the current water outlet temperature of the temperature sensor detected in real time during the combustion process, and the first combustion load Q1 is used for combustion after ignition. The first combustion load Q1 is determined according to the load range of the machine. Preferably, Q1=Qmin+(Qmax-Qmin)*50%, and the first combustion load Q1 is expressed as the product of the heating circulation flow L and the temperature rise △T corresponding to the circulation flow L: Q=L*△T.

[0089] When the shedding detection function is in the normal detection mode, the first outlet water temperature change value of the temperature sensor within the first preset time t1 (for example, 1 minute) when the machine burns with the first combustion load Q1 is obtained, and the first detection module 320 compares the first outlet water temperature change value with the preset threshold value. If the condition is not met, the combustion load continues to increase to Q2. The second outlet water temperature change value of the temperature sensor within the first preset time t1 when the machine burns with the second combustion compliance Q2 is obtained, and the first detection module 320 compares the second outlet water temperature change value with the preset threshold value. If the condition is not met, the combustion load continues to decrease to Q3. The third outlet water temperature change value of the temperature sensor within the first preset time t1 when the machine burns with the third combustion compliance Q2 is obtained, and the first detection module 320 compares the third outlet water temperature change value with the preset threshold value. If the condition is not met, it is determined that the temperature sensor of the heating outlet pipe is loose, and the machine stops and issues a fault alarm; if the condition is met, it is determined that the temperature sensor of the heating outlet pipe is not loose, and the machine burns normally until the shutdown condition is reached.

[0090] When the fall-off detection function is in the water pump detection mode, the first outlet water temperature change value of the temperature sensor is obtained when the machine burns at the first combustion load Q1 for the first preset time t1 (for example, 1 minute). The second detection module 330 compares the first outlet water temperature change value with the preset threshold value. If the condition is not met, the machine stops burning and controls the water pump to circulate for the second preset time t2 (for example, 5 minutes to 10 minutes). Continue to obtain the fourth outlet water temperature change value of the temperature sensor when the machine burns at the first combustion load Q1 for the first preset time t1 (for example, 1 minute). The second detection module 330 compares the fourth outlet water temperature change value with the preset threshold value. If the condition is not met, it is determined that the temperature sensor of the heating outlet pipe is loose, the machine stops and issues a fault alarm; if the condition is met, it is determined that the temperature sensor of the heating outlet pipe is not loose, and the machine burns normally until the shutdown condition is reached.

[0091] In one embodiment, Figure 5 As shown, the first detection module 320 includes:

[0092] The first detection unit 321 is used to control the wall-mounted boiler to burn at a first combustion load for a first preset time, and then detect whether the first outlet water temperature change value of the temperature sensor is greater than a preset threshold; if not, call the second detection unit 322;

[0093] The second detection unit 322 is used to control the wall-mounted boiler to run at the second combustion operation load for a first preset time, and then detect whether the second outlet water temperature change value of the temperature sensor is greater than a preset threshold; if not, call the third detection unit 323;

[0094] The third detection unit 323 is used to control the wall-mounted boiler to operate at the third combustion operation load for a first preset time, and then detect whether the third outlet water temperature change value of the temperature sensor is greater than a preset threshold; if not, call the first determination unit 324; if so, call the third determination unit 325;

[0095] A first determination unit 324, used to determine whether the temperature sensor is loose;

[0096] The third determination unit 325 is used to determine whether the temperature sensor is loose.

[0097] Among them, the first water outlet temperature change value is calculated by the first water outlet temperature of the temperature sensor before combustion at the first combustion load and the current water outlet temperature; the second water outlet temperature change value is calculated by the second water outlet temperature of the temperature sensor before combustion at the second combustion load and the current water outlet temperature; the third water outlet temperature change value is calculated by the third water outlet temperature of the temperature sensor before combustion at the third combustion load and the current water outlet temperature; the second combustion load is greater than the first combustion load, and the first combustion load is greater than the third combustion load.

[0098] Under normal circumstances, the outlet water temperature of the machine increases with an increase in the combustion load, and decreases with a decrease in the combustion load. However, the return water temperature of the heating outlet pipe entering the machine may be unstable, with the return water temperature decreasing as the load increases, or the return water temperature increasing as the load decreases, while the outlet water temperature remains unchanged. Therefore, the change in the outlet water temperature of the heating outlet pipe when the combustion load changes only once may lead to misjudgment. By adjusting the combustion load in opposite directions twice and observing the change in the outlet water temperature, misjudgment can be effectively reduced, and whether the temperature sensor of the heating outlet pipe has fallen off can be efficiently detected.

[0099] In this embodiment, the first combustion load Q1, the load change △Q, the temperature change △T0, the second combustion load Q2 = Q1 + △Q, the third combustion load Q3 = Q1-△Q, △Q>L0*△T0, preferably, △Q = L0*(△T0+1), where L0 is the current heating circulation flow rate of the wall-mounted rate, which can be measured by the heating system flow sensor or a larger flow value is pre-determined according to the flow-lift characteristics of the heating circulation pump configured for the wall-mounted boiler to cover the vast majority of heating systems using wall-mounted boilers. After receiving the ignition or combustion load adjustment instruction, the outlet water temperature T of the temperature sensor before the ignition or combustion load change is recorded, the current outlet water temperature T' of the temperature sensor is continuously detected, and the combustion time after the combustion load change is continuously recorded. When the combustion time is less than the first preset time t1, the outlet water temperature change value △T = |T'-T| is calculated based on T and T'. max .

[0100] In one embodiment, Figure 5 As shown, the second detection module 330 includes:

[0101] The fourth detection unit 331 is used to control the wall-mounted boiler to run at the first combustion load for a preset time, and then detect whether the first outlet water temperature change value of the temperature sensor is greater than a preset threshold; if not, call the first start unit 332;

[0102] The first starting unit 332 is used to start the water pump circulation function and control the water pump of the wall-mounted boiler to stop after running for a second preset time;

[0103] The fifth detection unit 333 is used to continue to control the wall-mounted boiler to burn at the first combustion load for a first preset time, and then detect whether the fourth outlet water temperature change value of the temperature sensor is greater than a preset threshold; if not, calling the second determination unit 334;

[0104] A second determination unit 334, used to determine whether the temperature sensor is loose;

[0105] Among them, the first water outlet temperature change value is calculated by the first water outlet temperature of the temperature sensor before combustion at the first combustion load and the current water outlet temperature; the fourth water outlet temperature change value is calculated by the fourth water outlet temperature of the temperature sensor before combustion again at the first combustion load and the current water outlet temperature.

[0106] In this embodiment, when the first outlet water temperature change value of the temperature sensor is not greater than the preset threshold, the first starting unit 332 starts the water pump circulation function for more than 5 minutes, and then continues to control the wall-mounted boiler to the first Combustion load Q1 combustion operation first After a preset time of 1 minute, the fifth detection unit 333 detects again If the fourth outlet water temperature change value of the temperature sensor is less than the preset threshold, the second determination unit 334 determines that the temperature sensor is loose, otherwise, the machine is determined to be working normally until the heating combustion stops. By introducing a circulating water pump to avoid multiple dynamic adjustments to the combustion load, observing the outlet water temperature change, effectively reducing misjudgment, and realizing efficient detection of whether the temperature sensor of the heating outlet pipe is off.

[0107] In the present embodiment, a wall-mounted boiler temperature sensor detachment detection system is provided. The first detection module and the second detection module actively adjust the combustion load of the wall-mounted boiler or start the water pump circulation function to determine whether the temperature sensor is in a detached state according to the change value of the heating water outlet temperature, thereby improving the accuracy of detachment detection and expanding the detachment detection method, effectively preventing the temperature sensor from feeding back erroneous temperature data, and even causing the machine to be unable to shut down, effectively ensuring the safety and reliability of the wall-mounted boiler operation and improving the user experience.

[0108] Example 3

[0109] Figure 6 The hardware structure diagram of a wall-mounted boiler provided in this embodiment. The water heater includes a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the program, the method for detecting the temperature sensor of the wall-mounted boiler in embodiment 1 is implemented. Figure 6 The wall-mounted boiler 60 shown is only an example and should not bring any limitation to the functions and scope of use of the embodiments of the present invention.

[0110] The boiler 60 may be in the form of a general computing device, for example, a server device. The components of the boiler 60 may include but are not limited to: at least one processor 61, at least one memory 62, and a bus 63 connecting different system components (including the memory 62 and the processor 61).

[0111] The bus 63 includes a data bus, an address bus, and a control bus.

[0112] The memory 62 may include a volatile memory, such as a random access memory (RAM) 621 and / or a cache memory 622 , and may further include a read-only memory (ROM) 623 .

[0113] The memory 62 may also include a program / utility 625 having a set (at least one) of program modules 624, such program modules 624 including but not limited to: an operating system, one or more application programs, other program modules, and program data, each of which or some combination may include an implementation of a network environment.

[0114] The processor 61 executes various functional applications and data processing by running the computer programs stored in the memory 62, such as the method for detecting the detachment of the wall-mounted boiler temperature sensor of Example 1 of the present invention.

[0115] The boiler 60 may also communicate with one or more external devices 64 (e.g., keyboards, pointing devices, etc.). Such communication may be performed via an input / output (I / O) interface 65. Furthermore, the boiler 60 generated by the model may also communicate with one or more networks (e.g., a local area network (LAN), a wide area network (WAN), and / or a public network, such as the Internet) via a network adapter 66. As shown, the network adapter 66 communicates with other modules of the boiler 60 generated by the model via a bus 63. It should be understood that, although not shown in the figure, other hardware and / or software modules may be used in conjunction with the water heater 60 generated by the model, including but not limited to: microcode, device drivers, redundant processors, external disk drive arrays, RAID (disk array) systems, tape drives, and data backup storage systems, etc.

[0116] It should be noted that although several units / modules or sub-units / modules of the water heater are mentioned in the above detailed description, such division is merely exemplary and not mandatory. In fact, according to an embodiment of the present invention, the features and functions of two or more units / modules described above may be embodied in one unit / module. Conversely, the features and functions of one unit / module described above may be further divided to be embodied by multiple units / modules.

[0117] Example 4

[0118] This embodiment provides a computer-readable storage medium on which a computer program is stored. When the program is executed by a processor, the steps of the method for detecting the detachment of a wall-mounted boiler temperature sensor of Embodiment 1 are implemented.

[0119] The readable storage medium may include but is not limited to: a portable disk, 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 a possible implementation, the present invention can also be implemented in the form of a program product, which includes a program code. When the program product is run on a terminal device, the program code is used to enable the terminal device to execute the steps of the wall-mounted boiler temperature sensor detachment detection method of Example 1.

[0121] The program code for executing the present invention may be written in any combination of one or more programming languages, and may be executed entirely on a user device, partially on a user device, as an independent software package, partially on a user device and partially on a remote device, or entirely on a remote device.

[0122] Although the specific embodiments of the present invention are described above, it should be understood by those skilled in the art that this is only for illustration and the protection scope of the present invention is defined by the appended claims. Those skilled in the art may make various changes or modifications to these embodiments without departing from the principles and essence of the present invention, but these changes and modifications all fall within the protection scope of the present invention.

Claims

1. A method for detecting the fall-off of a wall-mounted boiler temperature sensor, characterized in that: The temperature sensor is arranged on the heating water outlet pipe of the wall-mounted boiler, and the falling-off detection method comprises: When it is detected that the water outlet temperature of the heating water outlet pipe meets the combustion start temperature threshold, the combustion function and the shedding detection function of the wall-mounted boiler are controlled to be started; When the shedding detection function is in the conventional detection mode, the wall-mounted boiler is controlled to burn and operate at the first combustion load, the second combustion load and the third combustion load within three consecutive first preset time periods, and the shedding detection is performed according to the change value of the outlet water temperature of the temperature sensor; When the shedding detection function is in the water pump detection mode, after controlling the wall-mounted boiler to burn at the first combustion load within the first preset time and starting the water pump circulation function, shedding detection is performed according to the change value of the water outlet temperature of the temperature sensor.

2. The method for detecting the temperature sensor of a wall-mounted boiler according to claim 1, characterized in that: The step of controlling the wall-mounted boiler to burn and operate at the first combustion load, the second combustion load and the third combustion load respectively within three consecutive first preset time periods, and performing the shedding detection according to the outlet water temperature change value of the temperature sensor, comprises: After controlling the wall-mounted boiler to burn at the first combustion load for the first preset time, detecting whether a first outlet water temperature change value of the temperature sensor is greater than a preset threshold; If not, after controlling the wall-mounted boiler to operate at the second combustion operation load for the first preset time, detecting whether the second outlet water temperature change value of the temperature sensor is greater than the preset threshold; If not, after controlling the wall-mounted boiler to operate at the third combustion operation load for the first preset time, detecting whether the third outlet water temperature change value of the temperature sensor is greater than the preset threshold; If not, it is determined that the temperature sensor is loose; Among them, the first water outlet temperature change value is calculated by the first water outlet temperature of the temperature sensor before combustion at the first combustion load and the current water outlet temperature; the second water outlet temperature change value is calculated by the second water outlet temperature of the temperature sensor before combustion at the second combustion load and the current water outlet temperature; the third water outlet temperature change value is calculated by the third water outlet temperature of the temperature sensor before combustion at the third combustion load and the current water outlet temperature; the second combustion load is greater than the first combustion load, and the first combustion load is greater than the third combustion load.

3. The method for detecting the temperature sensor of a wall-mounted boiler according to claim 1, characterized in that: After controlling the wall-mounted boiler to burn and operate at the first combustion load within the first preset time and starting the water pump circulation function, the step of performing a shedding detection according to the change value of the outlet water temperature of the temperature sensor comprises: After controlling the wall-mounted boiler to operate at the first combustion load for the first preset time, detecting whether a first outlet water temperature change value of the temperature sensor is greater than a preset threshold; If not, start the water pump circulation function, and control the water pump of the wall-mounted boiler to stop after running for a second preset time; After continuing to control the wall-mounted boiler to burn at the first combustion load for the first preset time, detecting whether the fourth outlet water temperature change value of the temperature sensor is greater than the preset threshold; If not, it is determined that the temperature sensor is loose; Among them, the first water outlet temperature change value is calculated by the first water outlet temperature of the temperature sensor before combustion at the first combustion load and the current water outlet temperature; the fourth water outlet temperature change value is calculated by the fourth water outlet temperature of the temperature sensor before combustion again at the first combustion load and the current water outlet temperature.

4. The method for detecting the temperature sensor of a wall-mounted boiler according to claim 2, characterized in that: The combustion start temperature threshold is the difference between the heating set temperature and the return temperature; and / or, The step of controlling the wall-mounted boiler to burn and operate at the first combustion load, the second combustion load and the third combustion load within three consecutive first preset time periods, and performing the shedding detection according to the outlet water temperature change value of the temperature sensor, further includes: When the first outlet water temperature change value, the second outlet water temperature change value, or the third outlet water temperature change value is greater than the preset threshold, it is determined that the temperature sensor is not loose.

5. A wall-mounted boiler temperature sensor fall-off detection system, characterized in that: The temperature sensor is arranged on the heating water outlet pipe of the wall-mounted boiler, and the shedding detection system comprises: A control module, configured to control the start-up of the combustion function and the fall-off detection function of the wall-mounted boiler when it is detected that the outlet water temperature of the heating outlet pipe meets the combustion start-up temperature threshold; A first detection module is used to control the wall-mounted boiler to burn and operate at a first combustion load, a second combustion load and a third combustion load within three consecutive first preset time periods when the fall-off detection function is in a conventional detection mode, and to perform fall-off detection according to a change value of the outlet water temperature of the temperature sensor; The second detection module is used to control the wall-mounted boiler to burn at the first combustion load within the first preset time period and start the water pump circulation function when the shedding detection function is in the water pump detection mode, and then perform shedding detection according to the change value of the water outlet temperature of the temperature sensor.

6. The wall-mounted boiler temperature sensor fall-off detection system according to claim 5, characterized in that: The first detection module includes: A first detection unit is used to control the wall-mounted boiler to burn at the first combustion load for the first preset time, and then detect whether the first outlet water temperature change value of the temperature sensor is greater than a preset threshold; if not, calling the second detection unit; The second detection unit is used to control the wall-mounted boiler to operate at the second combustion operation load for the first preset time, and then detect whether the second outlet water temperature change value of the temperature sensor is greater than the preset threshold; if not, call the third detection unit; The third detection unit is used to control the wall-mounted boiler to operate at the third combustion operation load for the first preset time, and then detect whether the third outlet water temperature change value of the temperature sensor is greater than the preset threshold; if not, call the first determination unit; The first determination unit is used to determine whether the temperature sensor is loose; Among them, the first water outlet temperature change value is calculated by the first water outlet temperature of the temperature sensor before combustion at the first combustion load and the current water outlet temperature; the second water outlet temperature change value is calculated by the second water outlet temperature of the temperature sensor before combustion at the second combustion load and the current water outlet temperature; the third water outlet temperature change value is calculated by the third water outlet temperature of the temperature sensor before combustion at the third combustion load and the current water outlet temperature; the second combustion load is greater than the first combustion load, and the first combustion load is greater than the third combustion load.

7. The wall-mounted boiler temperature sensor fall-off detection system according to claim 5, characterized in that: The second detection module includes: A fourth detection unit is used to control the wall-mounted boiler to operate at the first combustion load for the first preset time, and then detect whether the first outlet water temperature change value of the temperature sensor is greater than a preset threshold; if not, call the first starting unit; The first starting unit is used to start the water pump circulation function and control the water pump of the wall-mounted boiler to stop after running for a second preset time; a fifth detection unit, configured to detect whether a fourth outlet water temperature change value of the temperature sensor is greater than the preset threshold value after continuing to control the wall-mounted boiler to burn at the first combustion load for the first preset time period; if not, calling the second determination unit; The second determination unit is used to determine whether the temperature sensor is loose; Among them, the first water outlet temperature change value is calculated by the first water outlet temperature of the temperature sensor before combustion at the first combustion load and the current water outlet temperature; the fourth water outlet temperature change value is calculated by the fourth water outlet temperature of the temperature sensor before combustion again at the first combustion load and the current water outlet temperature.

8. The wall-mounted boiler temperature sensor fall-off detection system according to claim 6, characterized in that: The combustion start temperature threshold is the difference between the heating set temperature and the return temperature; and / or, The first detection module also includes: The third determination unit is configured to determine that the temperature sensor is not loose when the first outlet water temperature change value, the second outlet water temperature change value or the third outlet water temperature change value is greater than the preset threshold.

9. A wall-mounted boiler, characterized in that: It comprises a processor, a memory and a computer program stored in the memory and executable on the processor, wherein when the computer program is executed by the processor, the method for detecting the detachment of the wall-mounted boiler temperature sensor as described in any one of claims 1 to 4 is implemented.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the method for detecting the detachment of a wall-mounted boiler temperature sensor as described in any one of claims 1 to 4 is implemented.

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