Methods, electronic equipment and storage media for analyzing flow anomalies in underfloor heating systems

Abstract

This invention provides a method, electronic device, and storage medium for analyzing flow anomalies in a floor heating system. The method includes: starting a circulating water pump, acquiring sensor status information from a flow sensor, and acquiring refrigerant temperature data collected by a first temperature sensor when a flow anomaly fault exists in the circulating water loop. Based on the refrigerant temperature data, it determines whether the floor heating system is at risk of freezing. If there is no risk of freezing, it outputs a first fault message indicating a fault in the circulating water loop. If there is a risk of freezing, it acquires circulating water temperature data collected by a second temperature sensor and determines whether the floor heating system is in a low-temperature state. If the floor heating system is in a low-temperature state, it outputs a second fault message indicating that the heat exchanger is frozen. This solution, by real-time monitoring of the flow sensor and temperature sensor to comprehensively determine the cause of flow anomalies in the floor heating system, facilitates subsequent inspection and maintenance.

Description

Technical Field

[0001] This invention relates to the field of flow control technology for underfloor heating, and particularly to a method for analyzing flow anomalies in underfloor heating systems, an electronic device, and a storage medium. Background Technology

[0002] Underfloor heating systems, also known as radiant floor heating systems, generally include a heat source, pipes, and related auxiliary materials. The heat source heats the medium, which then flows into the pipes to heat the floor, thereby conducting heat. Normal flow within the underfloor heating system is fundamental to its proper operation.

[0003] In practical use, the flow rate within an underfloor heating system is prone to abnormalities, and there are many reasons for this. For example, impurities and scale can clog the filters; during cooling or defrosting modes, the heat exchanger in the underfloor heating module may freeze due to excessively low water temperatures caused by heat exchange, leading to abnormal flow. If abnormal flow occurs in the underfloor heating system, it may result in water shortage and dry burning, affecting the system's lifespan and normal heating performance. Therefore, timely detection of flow abnormalities in the underfloor heating system is crucial.

[0004] Patent document CN106839085B discloses a method for determining dry burning in a heat pump water heating system, which accurately identifies dry burning in the system. This method involves controlling the water pump to operate at different speeds and collecting the output water flow and output power at these different speeds. The method then compares the difference in output water flow at different speeds with a predetermined threshold, and the difference in output power with a predetermined threshold, to determine whether the system is dry burning.

[0005] However, the causes of abnormal flow in underfloor heating systems are complex. Current technology can only detect abnormal flow in underfloor heating systems through certain algorithms, but cannot determine the cause of the fault, which will cause inconvenience to subsequent inspection and maintenance. Summary of the Invention

[0006] The purpose of this invention is to solve the problem in the prior art that in the underfloor heating system, only the existence of abnormal flow in the system can be known, but the cause of the fault cannot be known, which brings inconvenience to subsequent inspection and maintenance.

[0007] To address the aforementioned problems, embodiments of the present invention disclose a method for analyzing abnormal flow in a floor heating system. The floor heating system includes a heat exchanger, and a refrigerant circuit and a circulating water circuit respectively connected to the heat exchanger. A first temperature sensor is installed in the refrigerant circuit, and in the direction of refrigerant flow, the first temperature sensor is located downstream of the heat exchanger. A second temperature sensor, a flow sensor, and a circulating water pump are installed in the circulating water circuit, and in the direction of circulating water flow, the second temperature sensor is located downstream of the heat exchanger.

[0008] Furthermore, traffic anomaly analysis methods include:

[0009] S1: Start the circulating water pump, acquire the sensor status information of the flow sensor at a preset first time interval, and determine whether there is an abnormal flow fault in the circulating water circuit based on the sensor status information.

[0010] If so, proceed to step S2;

[0011] If not, continue to acquire sensor status information and determine whether there is an abnormal flow fault in the circulating water circuit;

[0012] S2: Acquire the refrigerant temperature data collected by the first temperature sensor at a preset second time interval, and determine whether there is a risk of freezing in the floor heating system based on the refrigerant temperature data;

[0013] If so, proceed to step S3;

[0014] If not, output the first fault information indicating a fault in the circulating water circuit;

[0015] S3: Acquire the circulating water temperature data collected by the second temperature sensor at a preset third time interval, and determine whether the floor heating system is in a low temperature state based on the circulating water temperature data.

[0016] If so, output the second fault information indicating that the heat exchanger is frozen;

[0017] If not, output the first fault information.

[0018] By employing the above scheme and the aforementioned flow anomaly analysis method, the status of the flow sensor can be monitored to determine whether a flow anomaly fault exists in the circulating water circuit. After confirming the existence of a flow anomaly fault, the status of the first temperature sensor installed in the refrigerant circuit and the second temperature sensor installed in the circulating water circuit are monitored to determine whether the refrigerant in the underfloor heating system's refrigerant circuit will freeze, and whether the underfloor heating system has actually frozen. Furthermore, based on the current status of the underfloor heating system, corresponding fault information indicating a fault in the circulating water circuit or a fault in the heat exchanger is output. In this way, during subsequent maintenance and inspection, the first fault information can be used to troubleshoot components in the circulating water circuit, such as filters and flow sensors, while the second fault information can be used to repair the heat exchanger, improving the convenience of inspection and maintenance.

[0019] According to another specific embodiment of the present invention, the flow anomaly analysis method for a floor heating system disclosed in this embodiment of the present invention includes step S1 as follows:

[0020] S11: Start the circulating water pump;

[0021] S12: Acquire sensor status information at a first time interval, and determine whether the sensor status information contains abnormal information indicating abnormal flow in the circulating water circuit;

[0022] If so, proceed to step S13;

[0023] If not, continue to acquire sensor status information and determine whether the sensor status information contains abnormal information;

[0024] S13: Accumulate and count the number of abnormal information, and stop the circulating water pump after a preset downtime;

[0025] S14: Restart the circulating water pump and repeat steps S12 to S14 until the cumulative number of abnormal messages reaches the preset abnormal message count threshold, then execute step S2.

[0026] By employing the above scheme, abnormal information is cumulatively counted, and a system flow anomaly is only confirmed after the cumulative count reaches a preset threshold. This prevents false alarms caused by accidental events and improves the accuracy of flow anomaly analysis. Furthermore, restarting the circulating water pump after a certain downtime allows for automatic reset once the anomaly is cleared. Additionally, restarting the pump only after a preset downtime avoids frequent start-stop cycles, which could negatively impact the pump's lifespan.

[0027] According to another specific embodiment of the present invention, in step S14 of the method for analyzing abnormal flow of a floor heating system disclosed in this embodiment of the present invention, after restarting the circulating water pump, it further includes: determining whether the normal operating time of the circulating water pump from the time of restart has reached a preset normal operating time threshold.

[0028] If so, the cumulative count of abnormal information will be reset to zero, and the circulating water pump will continue to run;

[0029] If not, continue to determine whether the normal operating time of the circulating water pump has reached the normal operating time threshold.

[0030] By adopting the above solution, after the circulating water pump has been working normally for a certain period of time, the number of abnormal alarms is reset to zero, which can prevent the system from shutting down due to false alarms, thus not affecting the normal operation of the system.

[0031] According to another specific embodiment of the present invention, in the method for analyzing abnormal flow of a floor heating system disclosed in this embodiment, if the refrigerant temperature data is not higher than a preset refrigerant temperature threshold in step S2, the floor heating system is at risk of freezing; in step S3, if the circulating water temperature data is not higher than a preset circulating water temperature threshold, the floor heating system is in a low temperature state.

[0032] According to another specific embodiment of the present invention, the method for analyzing abnormal flow in a floor heating system disclosed in this embodiment of the present invention, after outputting first fault information or second fault information, further includes: stopping the operation of the circulating water pump.

[0033] Furthermore, after stopping the circulating water pump, the process also includes: determining whether the duration of the circulating water pump's shutdown has reached the required downtime.

[0034] If so, restart the circulating water pump and return to step S1;

[0035] If not, continue to determine whether the duration of the circulating water pump stoppage has reached the required downtime.

[0036] Using the above solution, the circulating water pump can be restarted after a certain period of downtime, so that it can automatically return to normal after the abnormality is cleared.

[0037] According to another specific embodiment of the present invention, the method for analyzing abnormal flow of a floor heating system disclosed in this embodiment of the present invention, after starting the circulating water pump in step S1, further includes: judging in real time whether the start-up time of the circulating water pump has reached the preset minimum start-up time.

[0038] If so, continue acquiring sensor status information;

[0039] If not, shutting down the circulating water pump is prohibited.

[0040] With the above solution, after each start-up of the circulating water pump, it is necessary to ensure that the circulating water pump runs for at least a certain period of time, that is, after the preset minimum start-up time, before it can be stopped. This can prevent the circulating water pump from frequently starting and stopping due to the delay in flow detection after it is turned on, thereby reducing the service life of the circulating water pump.

[0041] According to another specific embodiment of the present invention, the method for analyzing abnormal flow in a floor heating system disclosed in this embodiment further includes a fault indication module; and after outputting first fault information or second fault information, it further includes displaying display information corresponding to the first fault information or second fault information on the fault indication module.

[0042] By adopting the above solution, the fault indication module displays the corresponding information of the fault, which can better indicate the location of the fault to the maintenance personnel and facilitate subsequent maintenance and inspection.

[0043] According to another specific embodiment of the present invention, the flow anomaly analysis method for a floor heating system disclosed in this embodiment of the present invention has a flow sensor located upstream of the heat exchanger in the flow direction of the circulating water. Furthermore, the first time interval ranges from 20s to 40s; the second time interval ranges from 30s to 60s; the third time interval ranges from 30s to 60s; the preset shutdown duration ranges from 20s to 40s; the preset anomaly counting threshold ranges from 2 to 4 times; the preset normal operation duration threshold ranges from 50s to 70s; the preset refrigerant temperature threshold ranges from -1℃ to 1℃; the preset circulating water temperature threshold ranges from 0℃ to 2℃; the preset minimum start-up duration ranges from 20s to 40s; the fault indication module is a display screen; and the displayed information is a fault code.

[0044] An embodiment of the present invention discloses an electronic device, comprising:

[0045] Memory is used to store computer programs, which include program instructions.

[0046] A processor is used to execute program instructions to cause an electronic device to perform the flow anomaly analysis method for a floor heating system as described in any of the above embodiments.

[0047] The present invention discloses a computer-readable storage medium storing a computer program, the computer program including program instructions, which are executed by an electronic device to cause the electronic device to perform the flow anomaly analysis method for the underfloor heating system as described in any of the above embodiments.

[0048] The beneficial effects of this invention are:

[0049] This solution provides a method for analyzing abnormal flow in underfloor heating systems. By monitoring the status of flow sensors, it determines whether an abnormal flow fault exists in the circulating water circuit. After confirming the presence of a flow fault, it monitors the status of a first temperature sensor in the refrigerant circuit and a second temperature sensor in the circulating water circuit to determine whether the refrigerant in the underfloor heating system might freeze, and whether the system has actually frozen. Based on the current status of the underfloor heating system, it outputs corresponding fault information indicating a fault in the circulating water circuit or a fault in the heat exchanger. In this way, during subsequent maintenance and inspection, the first fault information can be used to check components in the circulating water circuit, such as filters and flow sensors, to pinpoint the location of the abnormality and perform repairs. Simultaneously, the second fault information can be used to inspect and repair the heat exchanger. This solution not only accurately determines whether an abnormal flow occurs in the underfloor heating system but also determines whether the abnormal flow is caused by a fault in the circulating water circuit or by heat exchanger freezing. Subsequent inspection and maintenance can be based on the cause of the abnormal flow, eliminating the need to check each component in the underfloor heating system individually, thus improving the convenience of inspection and maintenance. Attached Figure Description

[0050] Figure 1 This is a schematic diagram of the system structure of the underfloor heating system provided in an embodiment of the present invention;

[0051] Figure 2 This is a flowchart illustrating the traffic anomaly analysis method provided in an embodiment of the present invention;

[0052] Figure 3 This is another flowchart illustrating the traffic anomaly analysis method provided in this embodiment of the invention;

[0053] Figure 4 This is another flowchart illustrating the traffic anomaly analysis method provided in this embodiment of the invention;

[0054] Figure 5 This is a schematic diagram of the structure of the electronic device provided in an embodiment of the present invention.

[0055] Explanation of reference numerals in the attached figures:

[0056] 1. Heat exchanger; 2. Refrigerant circuit; 3. Circulating water circuit; 4. First temperature sensor; 5. Second temperature sensor; 6. Flow sensor; 7. Circulating water pump; 8. Third temperature sensor; 9. Fourth temperature sensor; 10. Air vent valve; 11. Heater; 12. Water-side bypass two-way valve; 13. Y-type filter; 14. Transceiver; 15. Processor; 16. Memory. Detailed Implementation

[0057] Example 1:

[0058] To address the problem in existing underfloor heating systems that only indicate abnormal flow rates but not the cause of the fault, which hinders subsequent inspection and maintenance, this embodiment provides a method for analyzing abnormal flow rates in underfloor heating systems.

[0059] First, refer to Figure 1 The underfloor heating system provided in this embodiment is described below. Specifically, the underfloor heating system includes a heat exchanger 1, and a refrigerant circuit 2 and a circulating water circuit 3, which are respectively connected to the heat exchanger 1. Specifically, the heat exchanger 1 is a device used to transfer the heat of the cooling or heating medium in the refrigerant circuit 2 to the heat of the circulating water in the circulating water circuit 3. In this embodiment, a plate water heat exchanger is preferably used to exchange the heat of the flowing medium in the refrigerant circuit 2 and the circulating water circuit 3, so as to achieve a better heat exchange effect by utilizing the high-pressure resistant staggered flow structure of the plate water heat exchanger. Among them, a first temperature sensor 4 (i.e., a refrigerant outlet (heating) temperature sensor, Temperature-Refrigerant Outlet, TRO) is provided in the refrigerant circuit 2. In the direction of refrigerant flow, the first temperature sensor 4 is located downstream of the heat exchanger 1. The first temperature sensor 4 is used to monitor the temperature of the medium in the refrigerant circuit 2 after passing through the heat exchanger 1. The circulating water loop 3 is equipped with a second temperature sensor 5 (also known as the circulating water outlet temperature sensor, TWO), a flow sensor 6, and a circulating water pump 7. In the direction of circulating water flow, the second temperature sensor 5 is located downstream of the heat exchanger 1. In the direction of circulating water flow, the flow sensor 6 is located upstream of the heat exchanger 1. The second temperature sensor 5 is used to monitor the temperature of the circulating water in the circulating water loop 3 after passing through the heat exchanger 1. The flow sensor 6 is used to monitor the flow rate of the circulating water in the circulating water loop 3. In this embodiment, a float switch is selected as the flow sensor 6. The circulating water pump 7 is used to transport circulating water and control its flow direction.

[0060] In this embodiment, the underfloor heating system may further include a third temperature sensor 8 (i.e., a refrigerant inlet (heating) temperature sensor, Temperature-Refrigerant Inlet, TRI) installed upstream of the heat exchanger 1 in the refrigerant circuit 2 to monitor the temperature of the medium flowing into the heat exchanger 1. It may also include a fourth temperature sensor 9 (i.e., a circulating water inlet temperature sensor, Temperature-Water Inlet, TWI) installed in the circulating water circuit 3 to monitor the temperature of the circulating water flowing into the heat exchanger 1. It may also include an air vent valve 10, a heater 11, a water-side bypass two-way valve 12, a Y-type filter 13, etc., installed in the circulating water circuit 3. The air vent valve 10 is located at the highest point or bend of the circulating water circuit 3 to vent excess gas generated in the pipes during water replenishment or heating, ensuring smooth and balanced circulation. The heater 11 is used to heat the water in the circulating water circuit 3. In this embodiment, the heater 11 is located at the bend of the circulating water circuit 3, and the air vent valve 10 is installed on the heater 11 to quickly discharge the air generated after the heater 11 heats the circulating water. The water-side bypass two-way valve 12 is used to control the water flow rate in the circulating water circuit 3. The Y-type filter 13 is located near the inlet of the circulating water circuit 3 to remove impurities from the circulating water. In this embodiment, the Y-type filter 13 is selected to filter impurities in the circulating water, allowing for convenient removal of impurities from the waste sedimentation port of the filter. Of course, those skilled in the art can also choose filters of other structures or models.

[0061] Specifically, in this embodiment, reference is made to... Figure 1 The refrigerant (or heating medium) in refrigerant circuit 2 flows through the third temperature sensor 8 and then to heat exchanger 1. After exchanging heat with the circulating water in circulating water circuit 3, it flows out of heat exchanger 1 and to the first temperature sensor 4. The circulating water in circulating water circuit 3, under the control of circulating water pump 7, flows through water-side bypass two-way valve 12 and to Y-type filter 13 to filter impurities. After passing through flow sensor 6 and the fourth temperature sensor 9, it flows into heat exchanger 1 to exchange heat with the refrigerant in refrigerant circuit 2. It then flows out of heat exchanger 1. The circulating water after exiting heat exchanger 1 reaches heater 11 via second temperature sensor 5. After being heated by heater 11, it continues to circulate under the action of circulating water pump 7.

[0062] In actual use, the aforementioned underfloor heating system frequently experiences abnormal flow detected by the flow sensor 6. These abnormal flow conditions may be caused by impurities or scale clogging the Y-type filter 13, leading to abnormal water flow; or by a malfunction or poor contact of the flow sensor 6 itself, resulting in false alarms. Alternatively, during cooling or defrosting modes, the heat exchanger 1 may freeze due to excessively low water temperature caused by evaporative heat absorption, leading to abnormal flow. However, simply monitoring the flow sensor 6 only indicates an abnormal flow in the circulating water loop 3, but not the cause. This necessitates troubleshooting each possible cause during subsequent inspection and repair, prolonging the process. The flow abnormality analysis method provided in this embodiment, however, can analyze the specific cause of the abnormal flow in the underfloor heating system by monitoring the states of the flow sensor 6, the first temperature sensor 4, and the second temperature sensor 5.

[0063] Next, the traffic anomaly analysis method provided in this embodiment will be described.

[0064] Specifically, refer to Figure 2 In the flow anomaly analysis method for the underfloor heating system according to the present invention, the flow anomaly analysis method includes:

[0065] S1: Start the circulating water pump, acquire the sensor status information of the flow sensor at a preset first time interval, and determine whether there is an abnormal flow fault in the circulating water circuit based on the sensor status information.

[0066] If so, proceed to step S2;

[0067] If not, continue to acquire sensor status information and determine whether there is an abnormal flow fault in the circulating water circuit;

[0068] S2: Acquire the refrigerant temperature data collected by the first temperature sensor at a preset second time interval, and determine whether there is a risk of freezing in the floor heating system based on the refrigerant temperature data;

[0069] If so, proceed to step S3;

[0070] If not, output the first fault information indicating a fault in the circulating water circuit;

[0071] S3: Acquire the circulating water temperature data collected by the second temperature sensor at a preset third time interval, and determine whether the floor heating system is in a low temperature state based on the circulating water temperature data.

[0072] If so, output the second fault information indicating that the heat exchanger is frozen;

[0073] If not, output the first fault information.

[0074] Specifically, when determining the cause of abnormal flow in the underfloor heating system, first turn on the circulating water pump in the system to allow the circulating water in the loop to flow. After turning on the pump, monitor the status information of the flow sensor installed in the loop. Furthermore, determine if there is an abnormality in the sensor status information to further assess whether there is a flow abnormality fault in the loop. If the flow sensor status information indicates a flow abnormality fault in the loop, proceed to the next step of monitoring the temperature sensor status. If the flow sensor status information is normal, it means there is no flow abnormality fault in the loop, and monitoring the flow sensor status can continue (step S1). Following the previous step, if there is a flow abnormality fault in the loop, acquire the data collected by the first temperature sensor and determine whether there is a risk of freezing in the underfloor heating system based on the temperature of the refrigerant medium flowing through the heat exchanger in the refrigerant loop, as collected by the first temperature sensor. If there is no risk of freezing in the underfloor heating system, the temperature of the medium in the refrigerant loop will not be very low, and freezing will not occur. Therefore, the cause of the abnormal flow is likely pipe blockage, filter blockage, etc. Therefore, a first fault message indicating a malfunction in the circulating water circuit can be output. During maintenance, the first fault message can be used to troubleshoot components in the circulating water circuit, narrowing the scope of troubleshooting and improving maintenance efficiency. If the underfloor heating system is at risk of freezing, step S3 is executed to determine whether the underfloor heating system is in a low-temperature state, i.e., whether the underfloor heating system has actually frozen (step S2). Following the previous step, if the underfloor heating system is at risk of freezing, the temperature of the circulating water in the circulating water circuit after passing through the heat exchanger is acquired by the second temperature sensor, and the temperature of the circulating water is used to determine whether the underfloor heating system is in a low-temperature state, such as defrosting or cooling. When the underfloor heating system is in a low-temperature state, the refrigerant may enter the underfloor heating module due to the throttling device malfunction, leading to excessively low circulating water temperature, which can cause the heat exchanger to freeze. In other words, the reason for the abnormal flow in the circulating water circuit is that the heat exchanger has frozen and become blocked. Therefore, a second fault message indicating that the heat exchanger is frozen can be output at this time. If the underfloor heating system is not in a low-temperature state at this time, there is no risk of freezing. The abnormal flow rate at this time is caused by the failure of the components in the circulating water circuit, and the first fault information needs to be output (step S3).

[0075] More specifically, the first time interval is in the range of 20s to 40s; for example, it can be 20s, 30s, 40s, or other times within that range; the second time interval is in the range of 30s to 60s; for example, it can be 30s, 40s, 60s, or other times within that range; the third time interval is in the range of 30s to 60s; for example, it can be 30s, 40s, 60s, or other times within that range.

[0076] The aforementioned flow anomaly analysis method monitors the status of flow sensors to determine if a flow anomaly exists in the circulating water loop. After confirming the presence of a flow anomaly, the status of the first temperature sensor in the refrigerant loop and the second temperature sensor in the circulating water loop are monitored to determine whether the refrigerant in the underfloor heating system's refrigerant loop will freeze, and whether the underfloor heating system has actually frozen. Furthermore, based on the current status of the underfloor heating system, corresponding fault information indicating a fault in the circulating water loop or a fault in the heat exchanger is output. In this way, during subsequent maintenance and inspection, the first fault information can be used to check components in the circulating water loop, such as filters and flow sensors, while the second fault information can be used to repair the heat exchanger, improving the convenience of inspection and maintenance. Furthermore, acquiring sensor status information, refrigerant temperature data, and circulating water temperature data at preset time intervals reduces computational load and system energy consumption. Moreover, by simply monitoring flow using flow sensors, the presence of flow anomalies in the underfloor heating system can be determined without overly complex algorithms, improving the execution efficiency of the anomaly analysis method.

[0077] Further, refer to Figure 3 In the flow anomaly analysis method of the underfloor heating system according to the present invention, step S1 includes:

[0078] S11: Start the circulating water pump;

[0079] S12: Acquire sensor status information at a first time interval, and determine whether the sensor status information contains abnormal information indicating abnormal flow in the circulating water circuit;

[0080] If so, proceed to step S13;

[0081] If not, continue to acquire sensor status information and determine whether the sensor status information contains abnormal information;

[0082] S13: Accumulate and count the number of abnormal information, and stop the circulating water pump after a preset downtime;

[0083] S14: Restart the circulating water pump and repeat steps S12 to S14 until the cumulative number of abnormal messages reaches the preset abnormal message count threshold, then execute step S2.

[0084] Specifically, the circulating water pump is started first (step S11). Next, the sensor status information of the flow sensor is acquired, such as the circulating water flow rate in the circulating water loop obtained by the flow sensor, and it is determined whether the sensor status information contains abnormal information indicating abnormal flow in the circulating water loop. For example, the actual measured circulating water flow rate is compared with the threshold range corresponding to normal circulating water flow rate. If the actual measured circulating water flow rate is within the threshold range, it indicates that the circulating water flow rate in the circulating water loop is normal. At this time, the sensor status information needs to be continuously monitored and judged. If the actual measured circulating water flow rate is lower than the threshold range, it indicates that the flow in the circulating water loop is abnormal. At this time, the subsequent step of counting the number of abnormal information needs to be performed (step S12). Following the previous step, the number of abnormal information is accumulated. Each time the sensor status information is acquired, it is immediately determined whether the abnormal information exists based on the acquired sensor status information. If it exists, an abnormality is recorded, and the circulating water pump is immediately stopped until the shutdown time is reached (step S13). After the shutdown time reaches the preset shutdown time, the circulating water pump is restarted, and the sensor status information is acquired again to determine whether the abnormal information exists. If abnormal information exists, the abnormal count is incremented by one. After continuously looping the steps of acquiring sensor status information and accumulating the abnormal information, when the accumulated count of abnormal information reaches a certain number (abnormal count threshold), step S2 (step S14) is executed.

[0085] More specifically, the preset downtime ranges from 20s to 40s; for example, it can be 20s, 30s, 40s, or other times within this range. The preset exception count threshold ranges from 2 to 4 times, for example, 2 times, 3 times, or 4 times.

[0086] This system employs a cumulative counting process for abnormal information. Only after the cumulative count reaches a preset threshold is a confirmed flow anomaly determined, and flow anomaly analysis performed. Even occasional false alarms can be avoided by repeatedly confirming the anomaly's existence. Therefore, this method of cumulatively counting abnormal information prevents false alarms caused by accidental events, improving the accuracy of flow anomaly analysis. Furthermore, restarting the circulating water pump after a certain downtime automatically resets the system once the anomaly is resolved. Moreover, restarting the pump only after a preset downtime avoids frequent start-stop cycles, which could negatively impact the pump's lifespan.

[0087] Further, refer to Figure 3 In the flow anomaly analysis method of the underfloor heating system according to the present invention, after restarting the circulating water pump in step S14, it further includes: determining whether the normal operating time of the circulating water pump from the time of restart has reached the preset normal operating time threshold.

[0088] If so, the cumulative count of abnormal information will be reset to zero, and the circulating water pump will continue to run;

[0089] If not, continue to determine whether the normal operating time of the circulating water pump has reached the normal operating time threshold.

[0090] Specifically, during the process of accumulating and counting abnormal information, if an abnormality occurs before the accumulated count reaches the abnormality threshold, the circulating water pump needs to be stopped and restarted after a period of time. After restarting the circulating water pump, it is necessary to determine whether the circulating water pump can work normally and whether the normal working time has reached a certain length (normal operating time threshold). This indicates that the circulating water is circulating normally in the circulating water loop, and there are no abnormalities in any components. The previous abnormal counts may have been due to flow detection delays or occasional false alarms from the system. At this point, the accumulated count can be reset to zero, and the circulating water pump can continue to run. If the normal working time of the circulating water pump has not reached the normal operating time threshold, the circulating water pump needs to continue running. If a flow abnormality occurs during this period, the counting process should continue.

[0091] More specifically, the preset normal operating time threshold ranges from 50s to 70s; for example, 50s, 60s, 70s, or other times within this range.

[0092] With this procedure, before the cumulative number of abnormal information counts reaches the condition for flow anomaly analysis, that is, before the cumulative number of counts reaches the abnormal count threshold, the abnormal count is cleared to zero after the circulating water pump has been working normally for a certain period of time. This can prevent the system from shutting down due to false alarms, thus not affecting the normal operation of the system.

[0093] Further, refer to Figure 3In the flow anomaly analysis method of the underfloor heating system according to the present invention, in step S2, if the refrigerant temperature data is not higher than a preset refrigerant temperature threshold, the underfloor heating system is at risk of freezing; in step S3, if the circulating water temperature data is not higher than a preset circulating water temperature threshold, the underfloor heating system is in a low-temperature state. The preset refrigerant temperature threshold ranges from -1℃ to 1℃; for example, -1℃, 0℃, 1℃, or other temperature values ​​within this range. The preset circulating water temperature threshold ranges from 0℃ to 2℃; for example, 0℃, 1℃, 2℃, or other temperature values ​​within this range. 0℃ is the freezing point of water. In this embodiment, to allow for a margin and to accommodate differences in freezing points under different environments, it is preferable to set the circulating water temperature threshold to a temperature value slightly higher than 0℃, for example, 0.5℃ or 1℃.

[0094] It should be noted that in this embodiment, the state of the underfloor heating system is determined by directly comparing the refrigerant temperature data and circulating water temperature data with a preset temperature threshold. This method is simple, requires minimal computation, and is fast. Those skilled in the art can also choose other methods to determine the state of the underfloor heating system based on temperature, such as acquiring refrigerant temperature data and circulating water temperature data over a period of time, averaging them, and then comparing them with a preset temperature threshold.

[0095] In other words, if the temperature of the refrigerant flowing out of the heat exchanger after heat exchange is greater than, for example, a refrigerant temperature threshold of 0°C, it means the refrigerant temperature is above its freezing point, and the underfloor heating module will not experience abnormal flow due to freezing. If the temperature of the refrigerant flowing out of the heat exchanger after heat exchange is less than or equal to, for example, a refrigerant temperature threshold of 0°C, it means the refrigerant temperature is below its freezing point. If the circulating water in the heat exchanger cannot remove excess cooling capacity, the temperature of the circulating water flowing through the heat exchanger may further decrease, even causing the circulating water in the heat exchanger to freeze. Therefore, the underfloor heating module may experience abnormal flow due to freezing. In this case, it is necessary to further determine the temperature of the circulating water to assess the risk of circulating water freezing based on the water temperature in the circulating water loop. When the temperature of the circulating water flowing out of the heat exchanger after heat exchange is less than or equal to, for example, a circulating water temperature threshold of 1°C, it means the circulating water temperature is too low, and the heat exchanger may freeze, thus causing abnormal flow.

[0096] Further, refer to Figure 3In the flow anomaly analysis method for the underfloor heating system according to the present invention, after outputting the first fault information or the second fault information, the method further includes: stopping the operation of the circulating water pump. That is, after outputting the first fault information or the second fault information, it indicates that there is indeed a flow anomaly in the underfloor heating system. At this time, it is necessary to stop the operation of the circulating water pump to prevent the circulating water loop or heat exchanger from operating in a faulty state, thereby affecting its service life. Furthermore, after stopping the operation of the circulating water pump, the method further includes: determining whether the duration of the circulating water pump's shutdown has reached the required downtime.

[0097] If so, restart the circulating water pump and return to step S1;

[0098] If not, continue to determine whether the duration of the circulating water pump stoppage has reached the required downtime.

[0099] In other words, after the circulating water pump has been stopped for a certain period of time, it can be restarted so that it can automatically return to normal after the abnormality is cleared.

[0100] Further, refer to Figure 3 In the flow anomaly analysis method of the underfloor heating system according to the present invention, after starting the circulating water pump in step S1, the method further includes: judging in real time whether the start-up time of the circulating water pump has reached the preset minimum start-up time.

[0101] If so, continue acquiring sensor status information;

[0102] If not, then shutting down the circulating water pump is prohibited.

[0103] In other words, after each start-up of the circulating water pump, it is necessary to ensure that the circulating water pump runs for at least a certain period of time, that is, after the preset minimum start-up time, before it can be stopped. This can prevent the circulating water pump from frequently starting and stopping due to the delay in flow detection after it is turned on, thereby reducing the service life of the circulating water pump.

[0104] More specifically, the preset minimum startup time ranges from 20s to 40s; for example, 20s, 30s, 40s, or other times within this range.

[0105] Further, refer to Figure 3 In the flow anomaly analysis method for the underfloor heating system according to the present invention, the underfloor heating system further includes a fault indication module. Furthermore, after outputting first fault information or second fault information, the method further includes displaying display information corresponding to the first fault information or second fault information on the fault indication module.

[0106] Specifically, the fault indication module is a display screen that can be electrically connected to the controller of the underfloor heating system to display corresponding information based on the faults in the underfloor heating system, thus better indicating the location of the fault to maintenance personnel. The displayed information is a fault code. The fault code can be plain text, numbers, English letters, or any combination of two or three.

[0107] Next, combined Figure 4 This embodiment describes the process of a specific traffic anomaly analysis method.

[0108] First, start the circulating water pump.

[0109] After the circulating water pump starts running, the timer starts for 30 seconds to ensure that the circulating water pump runs for at least 30 seconds before being stopped, in order to prevent the circulating water pump from frequently starting and stopping, which would affect its service life.

[0110] After the circulating water pump runs for 30 seconds, it begins acquiring the circulating water flow rate in the circulating water loop monitored by the flow sensor at 20-second intervals, and determines whether the circulating water flow rate is within a predetermined range. If the circulating water flow rate is within the predetermined range, it indicates that there is no abnormal flow signal, and the circulating water pump needs to continue running. If the circulating water flow rate is outside the predetermined range, it indicates that there is an abnormal flow signal, and the abnormality count needs to be recorded once. Assuming that after the circulating water pump has run for 30 seconds, when the flow sensor status information is acquired for the second time, i.e., at the 50th second, an abnormal flow signal occurs, this time the abnormality count is recorded as one.

[0111] Determine if the current anomaly count has reached two. The current anomaly count is 1, which is less than two, so no flow anomaly analysis is needed. However, the circulating water pump should be stopped for 30 seconds and then restarted.

[0112] After restarting the circulating water pump, continue timing for 30 seconds. After 30 seconds, begin acquiring the circulating water flow rate in the circulation loop monitored by the flow sensor at 20-second intervals, and determine if the flow rate is within the predetermined range. If an abnormal flow signal is detected, increment the abnormal count by one. If no abnormal flow signal is detected temporarily, determine if the circulating water pump can operate normally for 60 seconds. If the circulating water pump has been operating normally for 60 seconds since this start, reset the previous abnormal count to zero and continue running the circulating water pump. Assuming that an abnormal flow signal is detected 30 seconds after the circulating water pump restarts, i.e., when the first flow rate monitoring of the circulation loop is acquired, increment the abnormal count by one. Adding the abnormal count from the first pump start, the total abnormal count is now two, indicating that the underfloor heating system has indeed experienced a flow abnormality, requiring further flow abnormality analysis.

[0113] When performing flow anomaly analysis, first check the refrigerant temperature data on the refrigerant side and determine if the refrigerant temperature is greater than 0℃. If it is greater than 0℃, the refrigerant temperature is above the freezing point, and the underfloor heating system will not experience flow anomalies due to freezing. In this case, the flow anomaly is likely caused by a component failure in the circulating water circuit, such as a clogged filter or poor contact of the flow sensor. The first fault information indicating a fault in the circulating water circuit will then be displayed on the screen, such as error code A01.

[0114] If the refrigerant temperature is less than or equal to 0°C, the underfloor heating system may be in cooling or defrosting mode. The low-temperature medium in the refrigerant circuit needs to transfer the low temperature to the circulating water and absorb the high temperature of the circulating water. If the circulating water in the heat exchanger cannot remove excess cooling capacity, the circulating water temperature will drop, potentially causing the circulating water in the heat exchanger to freeze, resulting in abnormal flow in the underfloor heating system. In this case, the circulating water temperature should be checked to determine if it is less than or equal to 1°C. If it is less than or equal to 1°C, the circulating water is at risk of freezing, and the abnormal flow in the underfloor heating system is caused by freezing in the heat exchanger. A second fault message indicating heat exchanger freezing will be displayed on the screen, such as error code A14. If the circulating water temperature is greater than 1°C, the abnormal flow may be caused by a component failure in the circulating water circuit. A first fault message indicating a fault in the circulating water circuit should be displayed on the screen, such as error code A01.

[0115] Example 2:

[0116] Figure 5 This is a schematic diagram of the structure of an electronic device provided in an embodiment of this application. Figure 5 As shown, the electronic device may include: transceiver 14, processor 15, and memory 16.

[0117] Processor 15 executes computer execution instructions stored in memory 16, causing processor 15 to perform the scheme in the above embodiments. Processor 15 may be a general-purpose processor, including a central processing unit (CPU), a network processor (NP), etc.; it may also be a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, or discrete hardware components.

[0118] The memory 16 is connected to the processor 15 via the system bus and communicates with it. The memory 16 is used to store computer program instructions.

[0119] Transceiver 14 can be used to obtain the task to be run and its configuration information.

[0120] The system bus can be a Peripheral Component Interconnect (PCI) bus or an Extended Industry Standard Architecture (EISA) bus, etc. The system bus can be divided into address bus, data bus, control bus, etc. For ease of representation, only one thick line is used in the diagram, but this does not indicate that there is only one bus or one type of bus. Transceivers are used to enable communication between database access devices and other computers (e.g., clients, read-write libraries, and read-only libraries). Memory may include random access memory (RAM) and may also include non-volatile memory (NVM).

[0121] The electronic device provided in this application embodiment can be the terminal device described in the above embodiments.

[0122] This application also provides a chip for executing instructions, which is used to execute the technical solution of the flow anomaly analysis method for the underfloor heating system described in the above embodiments.

[0123] Example 3:

[0124] This application also provides a computer-readable storage medium storing computer instructions. When the computer instructions are executed on a computer, the computer performs the technical solution of the flow anomaly analysis method for the underfloor heating system described in the above embodiments.

[0125] This application also provides a computer program product, which includes a computer program stored in a computer-readable storage medium. At least one processor can read the computer program from the computer-readable storage medium. When the at least one processor executes the computer program, it can implement the technical solution of the flow anomaly analysis method for the underfloor heating system described in the above embodiments.

[0126] It is obvious to those skilled in the art that the modules or steps of the present invention described above can be implemented using general-purpose computing devices. They can be centralized on a single computing device or distributed across a network of multiple computing devices. Optionally, they can be implemented using computer-executable program code, and thus stored in a storage medium (Read-Only Memory (ROM) / Random Access Memory (RAM), magnetic disk, optical disk) for execution by a computing device. In some cases, the steps shown or described can be performed in a different order than that presented herein, or they can be fabricated as separate integrated circuit modules, or multiple modules or steps can be fabricated as a single integrated circuit module. Therefore, the present invention is not limited to any particular hardware and software combination.

[0127] While the present invention has been illustrated and described with reference to certain preferred embodiments, those skilled in the art should understand that the above description is a further detailed explanation of the invention in conjunction with specific embodiments, and should not be construed as limiting the specific implementation of the invention to these descriptions. Various changes in form and detail can be made by those skilled in the art, including several simple deductions or substitutions, without departing from the spirit and scope of the invention.

Claims

1. A method for analyzing flow anomalies in a floor heating system, characterized in that, The underfloor heating system includes a heat exchanger, and a refrigerant circuit and a circulating water circuit respectively connected to the heat exchanger; wherein, a first temperature sensor is installed in the refrigerant circuit, and the first temperature sensor is located downstream of the heat exchanger in the direction of refrigerant flow; the circulating water circuit is equipped with a second temperature sensor, a flow sensor, and a circulating water pump, and the second temperature sensor is located downstream of the heat exchanger in the direction of circulating water flow; and The traffic anomaly analysis method includes: S1: Start the circulating water pump, acquire the sensor status information of the flow sensor at a preset first time interval, and determine whether there is an abnormal flow fault in the circulating water circuit based on the sensor status information; If so, proceed to step S2; If not, continue to acquire the sensor status information and determine whether there is an abnormal flow fault in the circulating water circuit; S2: Acquire the refrigerant temperature data collected by the first temperature sensor at a preset second time interval, and determine whether the floor heating system is at risk of freezing based on the refrigerant temperature data; If so, proceed to step S3; If not, output the first fault information indicating that the circulating water circuit has failed; S3: Acquire the circulating water temperature data collected by the second temperature sensor at a preset third time interval, and determine whether the floor heating system is in a low temperature state based on the circulating water temperature data. If so, output a second fault message indicating that the heat exchanger is frozen; If not, output the first fault information.

2. The method for analyzing flow anomalies in a floor heating system as described in claim 1, characterized in that, Step S1 includes: S11: Start the circulating water pump; S12: Acquire the sensor status information at the first time interval, and determine whether the sensor status information contains abnormal information indicating abnormal flow in the circulating water circuit; If so, proceed to step S13; If not, continue to acquire the sensor status information and determine whether the sensor status information contains the abnormal information; S13: Accumulate the number of abnormal messages and stop the circulating water pump after a preset downtime; S14: Restart the circulating water pump and repeat steps S12 to S14 until the cumulative number of abnormal messages reaches the preset abnormal message count threshold, then execute step S2.

3. The method for analyzing flow anomalies in a floor heating system as described in claim 2, characterized in that, In step S14, after restarting the circulating water pump, the method further includes: Determine whether the normal operating time of the circulating water pump since the restart time has reached the preset normal operating time threshold; If so, the cumulative count of the abnormal information is reset to zero, and the circulating water pump continues to run; If not, then continue to determine whether the normal operating time of the circulating water pump has reached the normal operating time threshold.

4. The method for analyzing flow anomalies in a floor heating system as described in claim 3, characterized in that, In step S2, if the refrigerant temperature data is not higher than the preset refrigerant temperature threshold, the floor heating system is at risk of freezing. In step S3, if the circulating water temperature data is not higher than the preset circulating water temperature threshold, then the floor heating system is in the low temperature state.

5. The method for analyzing flow anomalies in a floor heating system as described in claim 4, characterized in that, After outputting the first fault information or the second fault information, the method further includes: Stop the operation of the circulating water pump; and After stopping the circulating water pump, the following steps are also included: Determine whether the duration of the circulating water pump's shutdown has reached the specified downtime. If so, restart the circulating water pump and return to step S1; If not, then continue to determine whether the duration of the circulating water pump stoppage has reached the downtime.

6. The method for analyzing flow anomalies in a floor heating system as described in claim 5, characterized in that, In step S1, after starting the circulating water pump, the method further includes: Real-time determination of whether the startup time of the circulating water pump has reached the preset minimum startup time; If so, continue acquiring the sensor status information; If not, then shutting down the circulating water pump is prohibited.

7. The method for analyzing flow anomalies in a floor heating system as described in claim 6, characterized in that, The underfloor heating system also includes a fault indication module; and After outputting the first fault information or the second fault information, the method further includes: Display information corresponding to the first fault information or the second fault information is displayed on the fault indication module.

8. The method for analyzing flow anomalies in a floor heating system as described in claim 7, characterized in that, In the direction of water flow, the flow sensor is located upstream of the heat exchanger; and The first time interval is in the range of 20s to 40s; The second time interval is in the range of 30s to 60s; The third time interval is in the range of 30s to 60s; The preset downtime range is 20s to 40s; The preset threshold for anomaly counting is in the range of 2 to 4 times; The preset normal operation duration threshold ranges from 50s to 70s; The preset refrigerant temperature threshold range is -1℃ to 1℃; The preset circulating water temperature threshold ranges from 0°C to 2°C. The preset minimum startup time ranges from 20s to 40s; The fault indication module is a display screen; The displayed information is a fault code.

9. An electronic device, characterized in that, include: A memory for storing computer programs, the computer programs including program instructions; A processor is configured to execute the program instructions to cause the electronic device to perform the flow anomaly analysis method for a floor heating system according to any one of claims 1-8.

10. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a computer program, which includes program instructions that are executed by an electronic device to cause the electronic device to perform the flow anomaly analysis method for the underfloor heating system as described in any one of claims 1-8.

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