Water pump operation control method, system, air conditioning water pump and air conditioning unit

Abstract

This invention provides a water pump operation control method, system, air conditioning water pump, and air conditioning unit. The water pump operation control method includes: when the water pump starts to operate in a stopped state, obtaining the minimum value of the water pump's operating interval duration and starting a timer; when the timer reaches the minimum value, obtaining and identifying the current electricity price information sent by the power grid; and adaptively adjusting the water pump's operating interval duration based on the current electricity price information. This water pump operation control method effectively solves the technical problem in the prior art where, during transitional seasons or when the unit is not operating for a long time, the water system air conditioning unit fails to fully consider the dynamic changes in electricity price signals when periodically starting the water pump, which may lead to increased operating costs.

Description

Technical Field

[0001] This invention relates to the field of intelligent control technology, specifically to a water pump operation control method, system, air conditioning water pump, and air conditioning unit. Background Technology

[0002] In water-cooled air conditioning units, the primary function of the water pump is to circulate the water within the unit to ensure its normal operation. However, during transitional seasons or when the unit is not in operation for extended periods, the water pump is susceptible to the effects of air and water, leading to problems such as corrosion, blade damage, and bearing seizure. These malfunctions not only affect the pump's performance but may also burn out the motor upon restarting, causing further damage to the pump. Therefore, proper maintenance of the water pump is of paramount importance.

[0003] Currently, during transitional seasons or when the unit is not in operation for extended periods, water-cooled air conditioning units periodically start their water pumps to move the bearings for maintenance. However, although the unit can be programmed to set the interval and continuous operation times of the water pumps in shutdown or standby states, these settings are usually preset by the commissioning personnel. Therefore, the pump's operating cycle is relatively fixed, and the power and electricity consumed by the unit are also fixed. In areas with peak-valley electricity pricing systems, this fixed operating cycle may lead to the water pump consuming extra electricity during periods of high electricity prices, thereby increasing operating costs. Summary of the Invention

[0004] The purpose of this invention is to overcome the above-mentioned technical deficiencies and provide a water pump operation control method, system, air conditioning water pump and air conditioning unit to solve the technical problem that in the prior art, when the water system air conditioning unit periodically starts the water pump, it fails to fully consider the dynamic changes in electricity prices, which may lead to increased operating costs, in the case of transition seasons or long-term non-operation of the unit.

[0005] To achieve the above-mentioned technical objectives, according to one aspect of the present invention: a water pump operation control method is provided, the water pump operation control method comprising: when the water pump starts to be in a stopped operation state, acquiring the minimum value of the water pump operation interval duration and starting timing; when the timing time reaches the minimum value, acquiring and identifying the current electricity price information sent by the power grid; and adaptively adjusting the water pump operation interval duration according to the current electricity price information.

[0006] Furthermore, the method for adaptively adjusting the operating interval of the water pump based on the current electricity price information includes: obtaining the maximum value of the operating interval of the water pump; dividing the time between the minimum and maximum values ​​into multiple consecutive time intervals; and within each time interval, determining whether it is necessary to switch the water pump from a stopped state to a running state based on the current electricity price information.

[0007] Furthermore, a method for dividing the time between the minimum and maximum values ​​into multiple consecutive time intervals includes: if there are N levels of electricity price information, dividing the time between the minimum and maximum values ​​into N-1 consecutive time intervals, where N≥2.

[0008] Furthermore, if the electricity price information is divided into N tiers, the time between the minimum and maximum values ​​is divided into N-1 consecutive time intervals, including: if the electricity price information is divided into four tiers, the time between the minimum and maximum values ​​is divided into three consecutive time intervals, including: the first time interval, the second time interval, and the third time interval.

[0009] Furthermore, if the electricity price information includes: the lowest electricity price tier, the lower electricity price tier, the normal electricity price tier, and the highest electricity price tier; within each time interval, the method for determining whether the water pump needs to be switched from a stopped state to a running state based on the current electricity price information includes: within the first time interval, if the current electricity price information is identified as the lowest electricity price tier, directly switch the water pump from a stopped state to a running state; otherwise, continue to keep the water pump stopped state until the second time interval; within the second time interval, if the current electricity price information is identified as the lowest electricity price tier or the lower electricity price tier, directly switch the water pump from a stopped state to a running state; otherwise, continue to keep the water pump stopped state until the third time interval; within the third time interval, if the current electricity price information is identified as the lowest electricity price tier, the lower electricity price tier, or the normal electricity price tier, directly switch the water pump from a stopped state to a running state; otherwise, switch the water pump from a stopped state to a running state after the third time interval ends.

[0010] Furthermore, the pump operation control method also includes: when the pump changes from a stopped state to a started state, controlling the pump's operating speed based on the current electricity price information.

[0011] Furthermore, the method for controlling the operating level of the water pump based on the current electricity price information includes: if the electricity price information is divided into N levels, the operating level of the water pump is inversely proportional to the level in which the current electricity price information is located.

[0012] Furthermore, if the electricity price information is divided into N levels, the operating level of the water pump is inversely proportional to the level of the current electricity price information. Specifically, the higher the level of the current electricity price information, the lower the operating level of the water pump.

[0013] Furthermore, if the electricity price information includes: the lowest electricity price tier, the lower electricity price tier, the normal electricity price tier, and the highest electricity price tier; and if the current electricity price tier is higher, the method for controlling the water pump to operate at a lower tier includes: if the current electricity price information is identified as the lowest electricity price tier, the water pump operates at the first operating tier; if the current electricity price information is identified as the lower electricity price tier or the normal electricity price tier, the water pump operates at the second operating tier; if the current electricity price information is identified as the highest electricity price tier, the water pump operates at the third operating tier; wherein the first operating tier is higher than the second operating tier, and the second operating tier is higher than the third operating tier.

[0014] Furthermore, the current electricity price information sent by the power grid is obtained by connecting to the SG signal output terminal and EVU signal output terminal of the power grid.

[0015] Furthermore, the pump operation control method also includes: when the pump starts to be in a stopped state, obtaining the total dissolved solids content in the water in the pump and determining whether the total dissolved solids content in the water in the pump is greater than or equal to a preset threshold; if the total dissolved solids content in the water in the pump is greater than or equal to the preset threshold, controlling the pump to start; if the total dissolved solids content in the water in the pump is less than the preset threshold, then adaptively adjusting the pump start-stop interval according to the current electricity price information.

[0016] According to another aspect of the present invention: a water pump operation control system includes: a processor and a memory connected to the processor; the memory is used to store a computer program; the processor is used to call and execute the computer program in the memory to perform the above-described water pump operation control method.

[0017] Furthermore, the processor has two contact interfaces that are respectively connected to the SG signal output terminal and the EVU signal output terminal of the power grid.

[0018] Furthermore, the water pump operation control system is applicable to the above-mentioned water pump operation control method, and the water pump operation control system also includes: a water quality detector connected to the processor; the water quality detector is used to detect the total dissolved solids content in the water inside the water pump.

[0019] According to another aspect of the present invention: an air conditioning water pump, comprising: a water pump operation control system, wherein the water pump operation control system is the water pump operation control system described above.

[0020] According to another aspect of the present invention: an air conditioning unit, comprising: an air conditioning water pump, wherein the air conditioning water pump is the air conditioning water pump described above.

[0021] Beneficial effects:

[0022] Applying the technical solution of this invention, the water pump operation control method provided by this invention, when the water pump begins to stop, the system obtains the minimum value of the water pump's operating interval and starts timing. Once the timing reaches the minimum value, the system initiates the electricity price monitoring phase, obtains and identifies the current electricity price information sent by the power grid, and adaptively adjusts the water pump's operating interval. Therefore, by setting the identification of current electricity price information after reaching the minimum water pump operating interval, it can be ensured that the water pump will not restart immediately after stopping, while ensuring that the water pump starts at least once within a certain period of time. This avoids losses and energy consumption caused by frequent start-stop cycles and prevents equipment rusting or damage due to prolonged shutdown, thus protecting the equipment. Simultaneously, by adaptively adjusting the water pump's operating interval based on current electricity price information, the operating strategy can be optimized in real time, avoiding starting the water pump during periods of highest electricity prices, effectively reducing power consumption and operating costs, especially during periods of high electricity prices, improving overall energy efficiency. Furthermore, this method can flexibly adapt to changes in electricity prices, reducing users' electricity expenses and maximizing economic benefits. By avoiding continuous operation during periods of high electricity prices, the workload of the water pumps is reduced, extending equipment lifespan and lowering maintenance and replacement costs. Simultaneously, it balances the grid load, alleviating grid pressure during peak hours. Through dynamic monitoring of electricity prices, the water pumps can flexibly adjust according to supply and demand in different seasons, ensuring they start at appropriate times and avoiding unnecessary energy waste. Furthermore, the control method of this invention automatically acquires and identifies electricity price information and makes adaptive adjustments, reducing the need for manual intervention, decreasing operational complexity, improving the system's automation level, and ensuring stable system operation. This water pump operation control method effectively solves the technical problem in existing technologies where, during transitional seasons or when the unit is not operating for extended periods, the water system air conditioning unit fails to adequately consider dynamic changes in electricity price signals when periodically starting the water pumps, potentially increasing operating costs. Attached Figure Description

[0023] Figure 1 A schematic flowchart of a first embodiment of the pump operation control method according to the present invention is shown;

[0024] Figure 2 A schematic flowchart of a second embodiment of the pump operation control method according to the present invention is shown. Detailed Implementation

[0025] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present application.

[0026] In existing technologies, to prevent water pumps from seizing up, they are typically started periodically during periods when the pump is not in operation to move the bearings and thus achieve maintenance. Currently, the method for controlling the periodic operation of water pumps mainly relies on the commissioning personnel setting the interval and continuous operation time of the pump in the control system when it is off or in standby mode. The water pump will then operate accordingly based on these preset parameters.

[0027] However, since the operating cycle of the water pump is fixed, this control method has poor flexibility, especially in areas with peak-valley electricity pricing systems. It may cause the water pump to operate during periods of high electricity prices, resulting in additional power consumption and increased operating costs.

[0028] To effectively solve the above problems, the present invention provides a water pump operation control method, system, air conditioning water pump and air conditioning unit, which will be described in detail below.

[0029] Example 1

[0030] Please see Figure 1 As shown in the embodiment of the present invention, the present invention provides a water pump operation control method, the water pump operation control method comprising:

[0031] Step S11: When the water pump starts to stop running, obtain the minimum value of the water pump running interval and start timing.

[0032] Step S12: When the timing reaches its minimum value, obtain and identify the current electricity price information sent by the power grid;

[0033] Step S13: Adjust the operating interval of the water pump according to the current electricity price information.

[0034] As can be seen, the pump operation control method provided by this invention, when the pump begins to stop, acquires the minimum operating interval of the pump and starts timing. Once the timing reaches the minimum value, the system initiates the electricity price monitoring phase, acquires and identifies the current electricity price information sent by the power grid, and adaptively adjusts the operating interval of the pump. Therefore, by setting the identification of current electricity price information after reaching the minimum operating interval, it ensures that the pump will not restart immediately after stopping, while ensuring that the pump starts at least once within a certain period, thereby avoiding losses and energy consumption caused by frequent start-stop cycles, and preventing equipment rust or damage due to prolonged shutdown, thus protecting the equipment. Simultaneously, by adaptively adjusting the pump's operating interval based on current electricity price information, the operating strategy can be optimized in real time, avoiding starting the pump during periods of highest electricity prices, effectively reducing power consumption and operating costs, especially during periods of high electricity prices, improving overall energy efficiency. Furthermore, this method can flexibly adapt to changes in electricity prices, reducing user electricity expenses and maximizing economic benefits. By avoiding continuous operation during periods of high electricity prices, the workload of the water pumps is reduced, extending equipment lifespan and lowering maintenance and replacement costs. Simultaneously, it balances the grid load, alleviating grid pressure during peak hours. Through dynamic monitoring of electricity prices, the water pumps can flexibly adjust according to supply and demand in different seasons, ensuring they start at appropriate times and avoiding unnecessary energy waste. Furthermore, the control method of this invention automatically acquires and identifies electricity price information and makes adaptive adjustments, reducing the need for manual intervention, decreasing operational complexity, improving the system's automation level, and ensuring stable system operation. This water pump operation control method effectively solves the technical problem in existing technologies where, during transitional seasons or when the unit is not operating for extended periods, the water system air conditioning unit fails to adequately consider dynamic changes in electricity price signals when periodically starting the water pumps, potentially increasing operating costs.

[0035] The "minimum operating interval of the water pump" mentioned above refers to the shortest time interval that the water pump must wait before it can be restarted after it has stopped running. This time limit is set to avoid frequent start-stop cycles of the water pump, thereby effectively protecting the equipment and extending its service life.

[0036] Optionally, the minimum operating interval of the water pump can be set by the user, or it can be set directly at the factory according to the model and characteristics of the water pump. Alternatively, it can be set by the commissioning personnel during the installation or commissioning of the water pump based on the actual situation; or the control system can automatically determine and set an optimal minimum operating interval based on historical data and operating conditions.

[0037] Optionally, the water pump operation control system is connected to the power grid. The processor can automatically identify the electricity price information of each electricity price stage in the local time-of-use electricity price through the electricity price information sent by the smart grid, and store it. This information can be used as an identification standard when the water pump needs to be controlled to run at regular intervals during transitional seasons or when the air conditioning unit is not running for a long time. When the electricity price monitoring stage is activated, the water pump operation control system obtains the current electricity price information sent by the power grid and compares it with the electricity price information of each electricity price stage in the local time-of-use electricity price stored in the memory to identify the specific current electricity price information. Based on the current electricity price information, the operating interval of the water pump is adaptively adjusted.

[0038] Optionally, in addition to automatically identifying the electricity price information for each stage of the local time-of-use pricing through the electricity price information sent by the power grid, it can also be manually set according to local conditions. Furthermore, the pump operation control system communicates with the power grid. When the electricity price monitoring phase is activated, the pump operation control system obtains the current electricity price information sent by the power grid and compares it with the manually set electricity price information to identify the specific current electricity price information. Based on the current electricity price information, it adaptively adjusts the pump's operating interval.

[0039] Specifically, the method for adaptively adjusting the operating interval of water pumps based on current electricity price information includes: obtaining the maximum value of the water pump's operating interval; dividing the time between the minimum and maximum values ​​into multiple consecutive time intervals; and within each time interval, determining whether the water pump needs to be switched from a stopped state to a running state based on the current electricity price information. This control method, by dividing the time between the minimum and maximum values ​​into multiple consecutive time intervals, allows for more precise monitoring of electricity price changes and more detailed operational decisions. This refined management effectively avoids the resource waste caused by simple start-stop strategies. Electricity prices typically fluctuate over time. By dividing the time intervals, the system can respond to electricity price changes in real time, ensuring that water pumps start when electricity prices are low, reducing operation during peak electricity price periods, thereby lowering operating costs. Simultaneously, by setting time intervals, the system can avoid unnecessary start-stop operations, protecting equipment and extending its service life.

[0040] The "maximum operating interval of the water pump" mentioned above refers to the longest continuous operating time that the water pump can run. Once this time is reached, the system will force the water pump to start, regardless of the current electricity price, to prevent the water pump from malfunctioning or being damaged due to prolonged inactivity.

[0041] Optionally, the maximum operating interval of the water pump can be set by the user, or it can be set directly at the factory according to the model and characteristics of the water pump. Alternatively, the commissioning personnel can set it according to the actual situation during the installation or commissioning of the water pump; or the control system can automatically determine and set an optimal maximum operating interval based on historical data and operating conditions.

[0042] Specifically, the method of dividing the time between the minimum and maximum values ​​into multiple consecutive time intervals includes: if there are N levels of electricity price information, dividing the time between the minimum and maximum values ​​into N-1 consecutive time intervals, where N≥2. Using this control method, dividing the time intervals according to electricity price information allows the system to adapt quickly to constantly changing electricity price environments, ensuring that the water pump operates during the most suitable time periods. Furthermore, by dividing the time between the minimum and maximum values ​​into N-1 consecutive time intervals and combining this with intelligent decision-making based on electricity price information, the operating efficiency of the water pump can be effectively improved, operating costs reduced, equipment protected, and the system's flexibility and intelligence enhanced.

[0043] Furthermore, if the electricity price information is divided into N tiers, the time between the minimum and maximum values ​​is divided into N-1 consecutive time intervals; if the electricity price information is divided into four tiers, the time between the minimum and maximum values ​​is divided into three consecutive time intervals: a first time interval, a second time interval, and a third time interval. This control method, dividing the time between the minimum and maximum values ​​into three consecutive time intervals, enables phased detection, ensuring that the water pump starts during the most economical and suitable period, while avoiding startup during periods of high electricity prices, thus achieving energy conservation, consumption reduction, and equipment protection. Simultaneously, phased detection ensures that the water pump starts during periods of lowest or lower electricity prices, significantly reducing energy consumption costs and overall operating expenses.

[0044] This can be understood as the time interval between the minimum and maximum values ​​representing the period during which the system dynamically monitors electricity price information during the pump operation control process. Within this time interval, the system acquires electricity price information in real time to determine the appropriate adjustment of the pump's operating interval based on the current electricity price.

[0045] Specifically, if the electricity price information includes: the lowest electricity price tier, the lower electricity price tier, the normal electricity price tier, and the highest electricity price tier; within each time interval, the method for determining whether the water pump needs to be switched from a stopped state to a running state based on the current electricity price information includes: within the first time interval, if the current electricity price information is identified as the lowest electricity price tier, directly switch the water pump from a stopped state to a running state; otherwise, continue to keep the water pump stopped state until the second time interval; within the second time interval, if the current electricity price information is identified as the lowest electricity price tier or the lower electricity price tier, directly switch the water pump from a stopped state to a running state; otherwise, continue to keep the water pump stopped state until the third time interval; within the third time interval, if the current electricity price information is identified as the lowest electricity price tier, the lower electricity price tier, or the normal electricity price tier, directly switch the water pump from a stopped state to a running state; otherwise, switch the water pump from a stopped state to a running state after the third time interval ends. This control method, by dividing the time zone to determine whether the current electricity price is at the lowest, lower, normal, or highest tier, enables the system to respond more comprehensively to electricity price changes, ensuring that water pumps start at the appropriate time and maximizing the use of low-price periods. Furthermore, the system can flexibly adjust the water pump's operating status based on the increase in pump running intervals and real-time electricity price information, ensuring the pumps operate during periods of lower electricity prices, thereby effectively reducing operating costs. Simultaneously, the mechanism for setting a maximum value for the pump running interval ensures that the pumps can start when necessary, even when electricity prices are unfavorable. This effectively prevents equipment failures caused by prolonged shutdowns, such as bearing seizures, ensuring normal equipment operation. In addition, by intelligently judging electricity price signals, the system can rationally schedule water pump operation within appropriate time periods, optimizing overall energy efficiency and reducing unnecessary power consumption. Finally, the phased detection and response mechanism enhances the system's stability and reliability, ensuring the effective operation of the water pumps under different electricity price conditions.

[0046] Among them, the lowest electricity price tier can be understood as the period when the electricity price is the lowest; the lower electricity price tier can be understood as the period when the electricity price is relatively low; the normal electricity price tier can be understood as the period when the electricity price is normal; and the highest electricity price tier can be understood as the period when the electricity price is the highest.

[0047] Optionally, the durations of the first, second, and third time intervals can be manually set. Users or commissioning personnel can set these durations based on the frequency of signal occurrence in each stage of the local smart grid, ensuring that the sum of the durations of the first, second, and third time intervals equals the difference between the maximum and minimum operating intervals of the water pump. For example, when the frequency of the lowest electricity price occurrence is low, the duration of the first time interval can be slightly increased. This ensures that the water pump control system operates more in accordance with actual needs.

[0048] Optionally, within each time interval, the specific steps for determining whether the water pump needs to be switched from a stopped state to a running state based on the current electricity price information are as follows:

[0049] First, when the timing reaches the minimum set operating interval of the water pump, the system enters the first time interval. Within the first time interval, the system acquires and identifies the current electricity price information sent by the power grid. If the identified current electricity price is the lowest tier, the system controls the water pump to switch from a stopped state to a running state. If the identified current electricity price is not the lowest tier within the first time interval, the system controls the water pump to remain stopped and then enters the second time interval.

[0050] Secondly, within the second time interval, the system continues to acquire current electricity price information sent by the power grid, and sequentially identifies whether the current electricity price information is at the lowest or a lower price level. If the current electricity price information is identified as being at the lowest or a lower price level, the system controls the water pump to switch from a stopped state to a running state. If the current electricity price information is not identified as being at the lowest or a lower price level within the second time interval, the system controls the water pump to remain in a stopped state, and then proceeds to the third time interval.

[0051] Secondly, during the third time interval, the system continues to acquire current electricity price information sent by the power grid and sequentially identifies whether the current electricity price information is at the lowest, lower, or normal price level. If the current electricity price information is identified as being at the lowest, lower, or normal price level, the system controls the water pump to switch from a stopped state to a running state. If the current electricity price information is not identified as being at the lowest, lower, or normal price level during the third time interval, the system controls the water pump to remain in a stopped state.

[0052] Finally, when the third time interval ends, the system reaches the maximum operating interval of the water pump. At this point, regardless of the current electricity price, the water pump is started to ensure that it can start normally when necessary, preventing problems such as bearing seizure caused by prolonged shutdown.

[0053] Specifically, the pump operation control method also includes: when the pump transitions from a stopped state to a running state, controlling the pump's operating level based on current electricity price information. This control method, by dynamically adjusting the pump's operating level according to current electricity price information, allows for full utilization of resources and maximizes operational efficiency while electricity prices are low, thereby reducing overall operating costs. Furthermore, this method enables the pump to flexibly respond to electricity price changes, ensuring the selection of appropriate operating levels under different electricity price conditions, thus optimizing energy use.

[0054] Furthermore, based on current electricity price information, the method for controlling the operating level of the water pump includes: if the electricity price information is divided into N levels, the operating level of the water pump is inversely proportional to the level in which the current electricity price information is located. This control method can fully utilize low-priced electricity, thereby significantly reducing overall energy consumption and electricity costs. Reducing high-frequency operation during periods of high electricity prices can reduce equipment wear and failure rates, extending the service life of the water pump. Additionally, by rationally utilizing the differences in electricity prices at different times, energy efficiency can be improved, resource allocation optimized, and equipment utilization maximized when electricity prices are low.

[0055] The operating level of the water pump is inversely proportional to the current electricity price level. This can be understood as follows: when the electricity price is at a higher level, the water pump operates at a lower level; when the electricity price is at a lower level, the water pump operates at a higher level.

[0056] Furthermore, if electricity prices are divided into N tiers, the operating level of the water pump is inversely proportional to the current electricity price tier; specifically, the higher the current electricity price tier, the lower the operating level of the water pump. This control method allows for dynamic adjustment of the water pump's operating level to adapt to changes in different electricity price tiers. This not only helps to save energy and reduce consumption but also extends equipment lifespan, optimizes resource utilization, improves user experience, and reduces maintenance costs.

[0057] If the electricity price information includes: lowest price tier, lower price tier, normal price tier, and highest price tier; and if the current electricity price tier is higher, the method for controlling the water pump's operating level to be lower includes: if the current electricity price is identified as the lowest tier, the water pump operates at the first operating level; if the current electricity price is identified as a lower or normal tier, the water pump operates at the second operating level; and if the current electricity price is identified as the highest tier, the water pump operates at the third operating level. The first operating level is higher than the second operating level, and the second operating level is higher than the third operating level. This control method reduces power consumption by lowering the water pump's operating level when the electricity price is high, and increases the water pump's operating level when the electricity price is low, making full use of low-priced electricity, thereby significantly reducing overall energy consumption and electricity costs. By rationally utilizing the differences in electricity prices at different times, energy efficiency is improved, resource allocation is optimized, and equipment utilization is maximized when electricity prices are low.

[0058] Optionally, the first operating gear is the highest operating gear, the second operating gear is the medium operating gear, and the third operating gear is the lowest operating gear.

[0059] Specifically, the current electricity price information transmitted by the power grid is obtained by connecting to the SG signal output terminal and EVU signal output terminal of the power grid. This control method, through connection to the SG and EVU signal output terminals of the power grid, enables real-time acquisition of current electricity price information, ensuring the timeliness and accuracy of the control strategy. Furthermore, the operating status of the water pump can be quickly adjusted based on real-time electricity price information, thereby significantly reducing overall energy consumption and electricity costs.

[0060] Specifically, the pump operation control method also includes: when the pump is initially shut down, acquiring the total dissolved solids (TDS) content in the water and determining whether it is greater than or equal to a preset threshold; if the TDS content is greater than or equal to the preset threshold, controlling the pump to start; if the TDS content is less than the preset threshold, adaptively adjusting the pump start-stop interval based on current electricity price information. This control method, by monitoring the TDS content in the water in real time, ensures the water quality within the pump. When the TDS content is greater than or equal to the preset threshold, the pump is immediately started, thereby reducing scale formation and preventing pump jamming, thus extending equipment lifespan. Simultaneously, by combining water quality monitoring and electricity price information, the system can flexibly adjust its operating strategy based on actual water quality and electricity price changes, improving system adaptability and flexibility. Through real-time water quality monitoring and dynamic adjustment of operating strategies, the system ensures optimal operation, improving overall system performance and energy efficiency.

[0061] Furthermore, when the water pump transitions from a stopped state to a running state, and the pump's running time reaches the preset time, the pump stops and the timing restarts. This control method, by setting a preset running time, ensures the pump stops after that time, avoiding unnecessary prolonged operation and significantly reducing energy consumption and overall operating costs. Controlling the pump to stop after the preset running time prevents overload and overheating caused by prolonged continuous operation, extending equipment lifespan. Regular start-up and shutdown facilitates regular equipment maintenance, reducing equipment failures and repair costs due to prolonged operation. Additionally, it helps prevent scale buildup in pipes and inside the pump, maintaining system cleanliness and efficient operation.

[0062] Optionally, the specific implementation steps of the water pump operation control method are as follows (taking the water pump in an air conditioning unit as an example):

[0063] Step 100: When the air conditioning unit is not running for an extended period, the water pump of the air conditioning unit is in a stopped state. As soon as the water pump begins to stop, the shortest operating interval (i.e., the minimum operating interval duration) and the longest operating interval (i.e., the maximum operating interval duration) of the water pump are immediately acquired, and timing begins. Then, when the timing reaches the shortest operating interval (i.e., the minimum operating interval duration), the electricity price monitoring phase immediately begins, acquiring and identifying electricity price signals.

[0064] Based on the current situation, the set minimum operating interval time (i.e., the minimum operating interval duration of the water pump), and the set maximum operating interval time (i.e., the maximum operating interval duration of the water pump), the durations of the first time interval, the second time interval, and the third time interval are pre-set. When the timing reaches the minimum operating interval time (i.e., the minimum operating interval duration of the water pump), the system immediately enters the first time interval.

[0065] Step 101: Enter the first time interval. Within the first time interval, acquire and identify the current electricity price information sent by the power grid. If the identified current electricity price is the lowest tier, stop timing and control the water pump to operate at the first operating level. When the water pump's operating time reaches the preset operating time, control the water pump to stop operating and restart timing. Otherwise, control the water pump to remain in the off state and continue timing while repeating step 101 above until entering the second time interval.

[0066] Step 102: Upon entering the second time interval, continue acquiring the current electricity price information sent by the power grid. Identify whether the current electricity price is at the lowest or a lower tier. If it is at the lowest tier, stop timing and control the water pump to operate at the first operating level. When the pump's operating time reaches the preset time, stop the pump and restart timing. If the current electricity price is at a lower tier, control the pump to operate at the second operating level. When the pump's operating time reaches the preset time, stop the pump and restart timing. If the current electricity price is neither at the lowest nor a lower tier, keep the pump off and repeat step 102 while continuing timing until entering the third time interval.

[0067] Step 103: Upon entering the third time interval, continue acquiring the current electricity price information sent by the power grid. Sequentially identify whether the current electricity price is at the lowest, lower, or normal price level. If the current price is at the lowest level, stop timing and control the water pump to operate at the first operating level. When the pump's operating time reaches the preset time, stop the pump and restart timing. If the current price is at the lower or normal price level, control the pump to operate at the second operating level. When the pump's operating time reaches the preset time, stop the pump and restart timing. If the current price is neither at the lowest nor lower, or neither lower nor normal price level, keep the pump off and continue timing while repeating step 103 until the third time interval ends (i.e., when the timing reaches the longest operating interval).

[0068] Step 104: When the timing reaches the longest running interval, obtain and identify the current electricity price information, select the corresponding running level to control the water pump to run based on the identified result, and control the water pump to stop running when the water pump running time reaches the preset running time; and start timing again.

[0069] Step 105: When the water pump starts to stop, the system will simultaneously acquire the total dissolved solids (TDS) content in the water within the pump in real time and compare it with a preset threshold. If the TDS content is greater than or equal to the preset threshold, the system will control the water pump to start running and select the appropriate operating level according to the actual situation. Simultaneously, the timer will stop. When the pump's running time reaches the preset running time, the system will stop the pump and restart the timer. If the TDS content is less than the preset threshold, the system will continue to acquire the TDS content in real time and compare it with the preset threshold. Simultaneously, any one of steps 100 to 104 will be executed.

[0070] Example 2

[0071] Figure 2 This is a flowchart illustrating a water pump operation control method according to another exemplary embodiment, such as... Figure 2 As shown, the method includes:

[0072] First, when the water pump begins to stop, the shortest operating interval tmin, the longest operating interval tmax, and the first time period t1, the second time period t2, and the third time period t3, divided according to the difference between the longest operating interval tmax and the shortest operating interval tmin, are acquired, and timing begins. Then, when the timing reaches the shortest operating interval tmin, the electricity price signal monitoring phase immediately begins (i.e., entering the first time period t1), and real-time acquisition of the electricity price signal begins.

[0073] Secondly, within the first time period t1, the controller obtains and identifies the current electricity price signal from the smart grid. It determines whether the signal is a switch-on command (lowest electricity price signal). If it is, the water pump operates at its highest speed. After the preset operating time is reached, the pump stops and the timing restarts. Otherwise, the timing continues, and the controller continues to obtain and identify the electricity price signal from the smart grid.

[0074] Secondly, as time progresses, upon entering the second time period t2, the controller continues to acquire electricity price signals from the smart grid. It identifies the current electricity price signal obtained from the smart grid to determine if it is a minimum price signal (Switch-on command). If it is, the water pump is controlled to operate at its highest speed. After the preset operating time is reached, the water pump stops and the timing restarts. If it is a low price signal (Switch-on signa), the water pump is controlled to operate at a medium speed. After the preset operating time is reached, the water pump stops and the timing restarts. If it is not a low price signal (Switch-on signa), the timing continues, and the controller continues to acquire electricity price signals from the smart grid and identify whether it is a minimum price signal (Switch-on command) or a low price signal (Switch-on signa).

[0075] Secondly, as time progresses, upon entering the third time period t3, the controller continues to acquire electricity price signals from the smart grid. It identifies the current electricity price signal obtained from the smart grid and determines whether it is a minimum price signal (Switch-on command). If it is, the water pump operates at its highest speed. After the preset operating time, the pump stops and the timer restarts. If it is a low price signal (Switch-on sign), the pump operates at a medium speed. After the preset operating time, the pump stops and the timer restarts. If it is a normal price signal (Standard operation), the pump operates at a medium speed. After the preset operating time, the pump stops and the timer restarts. If the signal is not a standard operation, the timing continues, and the controller continues to obtain price signals from the smart grid and identify whether it is a switch-on command, a low price signal, or a standard operation.

[0076] Finally, as time progresses, when the timer reaches the maximum interval, the controller retrieves the electricity price signal from the smart grid. It then identifies whether the signal is a switch-on command (lowest price), a switch-on signa (lower price), a standard operation (normal price), or a switch-off command (highest price). If a switch-on command is detected, the pump operates at its highest speed. If a switch-on signa or standard operation signal is detected, the pump operates at a medium speed. If a switch-off command is detected, the pump operates at its lowest speed. After the preset operating time is reached, the pump stops and the timer restarts.

[0077] It should be noted that the "shortest operating interval time tmin" mentioned above refers to the minimum time interval that the water pump must wait before restarting after it has stopped running. This time setting aims to avoid frequent start-stop cycles, thereby protecting the equipment and extending its service life. The "longest operating interval time tmax" refers to the maximum continuous operating time the water pump can maintain. Once this time is reached, regardless of the current electricity price, the system will force the water pump to start to prevent malfunction or damage due to prolonged inactivity.

[0078] Optionally, the user can set the minimum operating interval tmin and the maximum operating interval tmax of the water pump, or these can be set at the factory according to the pump model and specifications. Alternatively, the commissioning personnel can set these values ​​based on the actual situation during pump installation or commissioning.

[0079] It should be noted that the durations of the first time period t1, the second time period t2, and the third time period t3 are manually set. Users or commissioning personnel can set these durations according to the frequency of signal occurrence in each stage of the local smart grid, and the sum of the durations of the first time period t1, the second time period t2, and the third time period t3 must equal the difference between the pump's longest operating interval tmax and the shortest operating interval tmin. For example, when the frequency of the lowest electricity price signal (Switch-on command) is low, the duration of the first time period t1 can be slightly increased. This ensures that the pump control system operates more in accordance with actual needs.

[0080] Optionally, the system controller's mainboard provides two contact interfaces, which are connected to two signals (SG and EVU) of the smart grid, respectively. This allows the mainboard to recognize four signals, as follows:

[0081] Table 1. Electricity Price Signal Correspondence Table

[0082]

[0083] When the signal emitted by the SG of the smart grid is 1 and the signal emitted by the EVU is 0, the signal obtained by the controller is the highest electricity price signal (Switch-off command), and power consumption should be minimized to avoid high electricity bills.

[0084] When both the SG and EVU signals of the smart grid are 0, the signal obtained by the controller is the standard operation signal, which indicates that the electricity price is at a normal level.

[0085] When the signal emitted by the smart grid SG is 0, while the signal emitted by the EVU is 1, the controller receives a lower electricity price signal (Switch-on signa), which means that the electricity price is lower.

[0086] When both the SG and EVU signals from the smart grid are 1, the controller receives the lowest electricity price signal (Switch-on command). This means that the electricity price is very low.

[0087] The system's controller motherboard has two contact interfaces, SG and EVU, for connecting to the smart grid, respectively, and both are SG-Ready certified.

[0088] Example 3

[0089] This invention provides a water pump operation control system, comprising: a processor and a memory connected to the processor; the memory stores computer programs; the processor calls and executes the computer programs in the memory to perform the water pump operation control method described in Embodiment 1 or Embodiment 2. This structural arrangement, through the cooperation of the processor and memory, achieves intelligent control of the water pump operation. By dynamically adjusting the operating speed and monitoring electricity price information in real time, the system can significantly reduce energy consumption and electricity costs, extend equipment life, optimize resource utilization, improve user experience, and reduce maintenance costs. Simultaneously, real-time water quality monitoring ensures the safety and reliability of the system.

[0090] Specifically, the processor has two pre-installed contact interfaces for connecting to the SG signal output terminal and the EVU signal output terminal of the power grid, respectively. This structural configuration allows the processor to connect to these terminals, enabling it to obtain real-time electricity price information and ensuring the timeliness and accuracy of the control strategy. Furthermore, it allows for rapid adjustment of the water pump's operating status based on real-time electricity price information, thereby significantly reducing overall energy consumption and electricity costs.

[0091] Specifically, the water pump operation control system is applicable to the water pump operation control method of Embodiment 1 above. The water pump operation control system further includes a water quality detector connected to the processor; the water quality detector is used to detect the total dissolved solids (TDS) content in the water within the water pump. With this structural setup, the water quality detector can monitor the TDS content in the water within the water pump in real time, ensuring the water quality within the pump. When the TDS content in the water within the pump is greater than or equal to a preset threshold, the water pump is immediately started, thereby reducing scale formation within the pump and preventing problems such as pump jamming, thus extending the equipment's service life. Simultaneously, by combining water quality monitoring and electricity price signals, the system can flexibly adjust its operating strategy according to actual water quality conditions and electricity price changes, improving the system's adaptability and flexibility. By monitoring water quality in real time and dynamically adjusting the operating strategy, the system ensures optimal operation, improving the overall performance and energy efficiency of the system.

[0092] In actual operation, a TDS water quality monitoring instrument will be installed in the pipeline inside the water pump to measure the water quality inside the pump.

[0093] Example 4

[0094] This invention provides an air conditioning water pump, including: a water pump operation control system, which is the water pump operation control system described in Embodiment 3 above. By setting up a water pump operation control system in the air conditioning water pump, the probability of the water pump jamming during high electricity prices can be reduced, thereby lowering the operating energy consumption of the air conditioning water pump and achieving the goals of energy saving and preventing water pump jamming. It also reduces equipment wear, extends equipment lifespan, and lowers maintenance costs.

[0095] Example 5

[0096] This invention provides an air conditioning unit, including an air conditioning water pump, which is the air conditioning water pump described in Embodiment 4 above. By installing an air conditioning water pump within the air conditioning unit, the operating energy consumption of the air conditioning unit can be reduced, thereby reducing overall operating costs.

[0097] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0098] Optionally, specific examples in this embodiment can refer to the examples described in the above embodiments, and will not be repeated here.

[0099] The sequence numbers of the embodiments in this application are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.

[0100] In the above embodiments of this application, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0101] The above description is only a preferred embodiment of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. A method for controlling the operation of a water pump, characterized in that, The pump operation control method includes: When the water pump starts to stop running, the minimum value of the water pump's running interval duration is obtained, and timing begins; When the timing reaches the minimum value, the current electricity price information sent by the power grid is obtained and identified; The operating interval of the water pump is adjusted adaptively based on the current electricity price information. The method for adaptively adjusting the operating interval of the water pump based on current electricity price information includes: Obtain the maximum value of the operating interval duration of the water pump; The time interval between the minimum and the maximum value is divided into multiple consecutive time intervals; Within each time interval, based on the current electricity price information, it is determined whether the water pump needs to be switched from a stopped state to a running state.

2. The water pump operation control method according to claim 1, characterized in that, The method for dividing the time interval between the minimum value and the maximum value into multiple consecutive time intervals includes: If the electricity price information has N tiers, the time between the minimum and maximum values ​​is divided into N-1 consecutive time intervals, where N≥2.

3. The water pump operation control method according to claim 2, characterized in that, If the electricity price information is divided into N tiers, the time interval between the minimum and maximum values ​​is divided into N-1 consecutive time intervals, including: If the electricity price information is divided into four levels, the time between the minimum value and the maximum value is divided into three consecutive time intervals, including: the first time interval, the second time interval, and the third time interval.

4. The water pump operation control method according to claim 3, characterized in that, If the electricity price information includes: the lowest electricity price tier, the lower electricity price tier, the normal electricity price tier, and the highest electricity price tier; the method for determining whether to switch the water pump from a stopped state to a running state based on the current electricity price information within each time interval includes: If the current electricity price is detected to be at the lowest tier within the first time interval, the water pump is switched from a stopped state to a running state; otherwise, the water pump remains stopped until the second time interval. During the second time interval, if the current electricity price information is detected to be the lowest or a relatively low electricity price, the water pump is directly switched from the stopped state to the started state; otherwise, the water pump remains stopped until the third time interval. During the third time interval, if the current electricity price information is identified as the lowest price tier, a lower price tier, or a normal price tier, the water pump is directly switched from the stopped state to the started state; otherwise, after the third time interval ends, the water pump is switched from the stopped state to the started state.

5. The water pump operation control method according to claim 1, characterized in that, The pump operation control method also includes: When the water pump switches from a stopped state to a running state, the operating speed of the water pump is controlled according to the current electricity price information.

6. The water pump operation control method according to claim 5, characterized in that, The method for controlling the operating speed of the water pump based on the current electricity price information includes: If the electricity price information is divided into N levels, the operating level of the water pump is inversely proportional to the level of the current electricity price information.

7. The water pump operation control method according to claim 6, characterized in that, If the electricity price information is divided into N levels, the operating level of the water pump is inversely proportional to the level of the current electricity price information, specifically: The higher the current electricity price level, the lower the operating level of the water pump should be.

8. The water pump operation control method according to claim 7, characterized in that, If the electricity price information includes: the lowest electricity price tier, a lower electricity price tier, a normal electricity price tier, and the highest electricity price tier; the method of controlling the water pump to operate at a lower level as the current electricity price tier is higher includes: If the current electricity price information is identified as the lowest electricity price tier, the water pump will operate at the first operating level. If the current electricity price information is detected as being in a lower price range or a normal price range, the water pump will operate at the second operating level. If the current electricity price information is identified as the highest electricity price level, the water pump will operate at the third operating level. Wherein, the first operating gear is greater than the second operating gear, and the second operating gear is greater than the third operating gear.

9. The pump operation control method according to any one of claims 1-8, characterized in that, To obtain the current electricity price information sent by the power grid, specifically: By connecting to the SG signal output terminal and EVU signal output terminal of the power grid, the current electricity price information sent by the power grid can be obtained.

10. The water pump operation control method according to claim 1, characterized in that, The pump operation control method also includes: When the water pump starts to stop, the total dissolved solids content in the water in the water pump is obtained, and it is determined whether the total dissolved solids content in the water in the water pump is greater than or equal to a preset threshold. If the total dissolved solids content in the water in the pump is greater than or equal to the preset threshold, the pump will be started. If the total dissolved solids content in the water in the pump is less than the preset threshold, the pump start-stop interval will be adjusted adaptively based on the current electricity price information.

11. A water pump operation control system, characterized in that, include: A processor, and a memory connected to the processor; The memory is used to store computer programs; The processor is used to call and execute the computer program in the memory to perform the water pump operation control method according to any one of claims 1 to 10.

12. The water pump operation control system according to claim 11, characterized in that, The processor has two contact interfaces that are respectively connected to the SG signal output terminal and the EVU signal output terminal of the power grid.

13. The water pump operation control system according to claim 11, characterized in that, The pump operation control system is applicable to the pump operation control method of claim 10, and the pump operation control system further includes: A water quality detector is connected to the processor; the water quality detector is used to detect the total dissolved solids content in the water within the water pump.

14. An air conditioning water pump, characterized in that, include: A water pump operation control system, wherein the water pump operation control system is the water pump operation control system of any one of claims 11 to 13.

15. An air conditioning unit, characterized in that, include: An air conditioning water pump, wherein the air conditioning water pump is the air conditioning water pump of claim 14.

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