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

Abstract

The invention provides a water pump operation control method and system, an air conditioner water pump and an air conditioning unit. The water pump operation control method comprises the steps that when the water pump starts to be in an operation stopping state, the minimum value of the operation interval duration of the water pump is obtained, and timing is started; when the timing time reaches the minimum value, obtaining and identifying current electricity price information sent by the power grid; and adaptively adjusting the operation interval duration of the water pump according to the current electricity price information. According to the water pump operation control method, the technical problem that in the prior art, in the transition season or under the condition that the unit does not operate for a long time, dynamic changes of electricity price signals are not fully considered when the water system air conditioning unit starts the water pump regularly, and operation cost is possibly increased is effectively solved.

Description

Technical Field

[0001] The present invention relates to the field of intelligent control technology, and in particular to a water pump operation control method and system, an air conditioning water pump and an air conditioning unit. Background Art

[0002] In water system air conditioning units, the main function of the water pump is to circulate water inside the unit to ensure the normal operation of the system. However, in transitional seasons or when the unit is not in operation for a long time, the water pump is easily affected by air and water, leading to problems such as rust, blade damage and bearing jamming. These faults will not only affect the performance of the water pump, but may also burn the motor when restarting, causing damage to the water pump. Therefore, the maintenance of the water pump is particularly important.

[0003] At present, in transitional seasons or when the unit is not in operation for a long time, the water system air conditioning unit will start the water pump regularly to move the bearings for maintenance purposes. However, although the unit can set the interval operation time and continuous operation time of the water pump in the shutdown or standby state, these settings can usually only be preset by the commissioning personnel, so the operation cycle of the water pump is relatively fixed, and the power and electricity consumed by the unit are also fixed. This fixed operation cycle may cause the water pump to consume additional electricity during high electricity price periods in areas that adopt the peak and valley electricity price system, thereby increasing operating costs. Summary of the invention

[0004] The purpose of the present 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 in the prior art that the water system air-conditioning unit fails to fully consider the dynamic changes of electricity prices when regularly starting the water pump during transition seasons or when the unit is not in operation for a long time, which may lead to increased operating costs.

[0005] In order to achieve the above 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 operating state, obtaining the minimum value of the water pump operation interval and starting timing; when the timing time reaches the minimum value, obtaining and identifying the current electricity price information sent by the power grid; according to the current electricity price information, adaptively adjusting the water pump operation interval.

[0006] Furthermore, the method for adaptively adjusting the operating interval duration of the water pump according to the current electricity price information includes: obtaining the maximum value of the operating interval duration of the water pump; dividing the time between the minimum value and the maximum value into multiple continuous time intervals; in each time interval, judging whether it is necessary to switch the water pump from a stopped operating state to a started operating state according to the current electricity price information.

[0007] Furthermore, the method of dividing the duration between the minimum value and the maximum value into multiple continuous time intervals includes: if the electricity price information is N levels, dividing the duration between the minimum value and the maximum value into N-1 continuous time intervals, N≥2.

[0008] Furthermore, if the electricity price information is divided into N levels, the time between the minimum value and the maximum value is divided into N-1 continuous 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 continuous time intervals, including: the first time interval, the second time interval, and the third time interval.

[0009] Further, if the electricity price information includes: the lowest electricity price level, the lower electricity price level, the normal electricity price level and the highest electricity price level; in each time interval, according to the current electricity price information, the method for judging whether it is necessary to convert the water pump from the stopped operation state to the started operation state includes: in the first time interval, if the current electricity price information is identified as the lowest electricity price level, directly converting the water pump from the stopped operation state to the started operation state; otherwise, continuing to keep the water pump in the stopped operation state until the second time interval; in the second time interval, if the current electricity price information is identified as the lowest electricity price level or the lower electricity price level, directly converting the water pump from the stopped operation state to the started operation state; otherwise, continuing to keep the water pump in the stopped operation state until the third time interval; in the third time interval, if the current electricity price information is identified as the lowest electricity price level or the lower electricity price level or the normal electricity price level, directly converting the water pump from the stopped operation state to the started operation state; otherwise, after the end of the third time interval, converting the water pump from the stopped operation state to the started operation state.

[0010] Furthermore, the water pump operation control method also includes: when the water pump is switched from a stopped operation state to a started operation state, the operation gear of the water pump is controlled according to current electricity price information.

[0011] Furthermore, the method for controlling the running gear of the water pump according to the current electricity price information includes: if the electricity price information is divided into N levels, controlling the running gear of the water pump to be inversely proportional to the level of the current electricity price information.

[0012] Furthermore, if the electricity price information is divided into N levels, the operating gear of the water pump is controlled to be 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 gear of the water pump.

[0013] Further, if the electricity price information includes: the lowest electricity price level, the lower electricity price level, the normal electricity price level and the highest electricity price level; if the level of the current electricity price information is higher, the method of controlling the running gear of the water pump is lower, including: if the current electricity price information is identified as the lowest electricity price level, the water pump runs at the first running gear; if the current electricity price information is identified as the lower electricity price level or the normal electricity price level, the water pump runs at the second running gear; if the current electricity price information is identified as the highest electricity price level, the water pump runs at the third running gear; wherein the first running gear is greater than the second running gear, and the second running gear is greater than the third running gear.

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

[0015] Furthermore, the water pump operation control method also includes: when the water pump starts to be in a stopped state, obtaining the total dissolved solids content in the water in the current water pump, and judging whether the total dissolved solids content in the water in the current water pump is greater than or equal to a preset threshold; if the total dissolved solids content in the water in the current water pump is greater than or equal to the preset threshold, controlling the water pump to start; if the total dissolved solids content in the water in the current water pump is less than the preset threshold, adaptively adjusting the interval duration of starting and stopping the water pump 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 computer programs; the processor is used to call and execute the computer program in the memory to execute the above-mentioned water pump operation control method.

[0017] Furthermore, two contact interfaces are reserved on the processor and 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 content of total dissolved solids in the water in the water pump.

[0019] According to another aspect of the present invention: an air-conditioning water pump includes: a water pump operation control system, and the water pump operation control system is the water pump operation control system mentioned above.

[0020] According to another aspect of the present invention: an air conditioning unit includes: an air conditioning water pump, and the air conditioning water pump is the air conditioning water pump mentioned above.

[0021] Beneficial effects: Applying the technical solution of the present invention, the water pump operation control method provided by the present invention, when the water pump starts to be in a shutdown state, the system will obtain the minimum value of the operation interval of the water pump and start timing. Once the timing time reaches the minimum value, the system will start the electricity price monitoring stage, obtain and identify the current electricity price information sent by the power grid, and adaptively adjust the operation interval of the water pump. It can be seen that by setting the current electricity price information identification after reaching the minimum value of the operation interval of the water pump, it can be ensured that the water pump will not be restarted immediately after the shutdown, and at the same time, it is ensured that the water pump is started at least once within a certain period of time, thereby avoiding the loss and energy consumption caused by frequent start and stop, and preventing the equipment from rusting or damage caused by long-term shutdown, and protecting the equipment. At the same time, by adaptively adjusting the operation interval of the water pump according to the current electricity price information, it is possible to optimize the operation strategy in real time, avoid starting the water pump during the period of the highest electricity price, effectively reduce power consumption and operating expenses, especially during the period of high electricity prices, and improve overall energy efficiency. In addition, the method can also flexibly adapt to changes in electricity prices, reduce user electricity bills, and maximize economic benefits. By avoiding continuous operation during periods of high electricity prices, the workload of the water pump is reduced, the service life of the equipment is extended, and the maintenance and replacement costs are reduced. At the same time, the load on the power grid is balanced and the pressure on the power grid during peak hours is reduced. By dynamically monitoring electricity prices, the water pump can be flexibly adjusted according to the supply and demand conditions of different seasons to ensure that it is started at the appropriate time and avoid unnecessary energy waste. In addition, the control method of the present invention reduces the need for manual intervention, reduces operational complexity, improves the automation level of the system, and ensures stable operation of the system by automatically acquiring and identifying electricity price information and making adaptive adjustments. The water pump operation control method can effectively solve the technical problem in the prior art that the water system air conditioning unit fails to fully consider the dynamic changes of the electricity price signal when regularly starting the water pump during the transition season or when the unit is not in operation for a long time, which may lead to increased operating costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A schematic flow chart of a first embodiment of a water pump operation control method according to the present invention is shown; Figure 2 A flow chart of a second embodiment of a water pump operation control method according to the present invention is shown. DETAILED DESCRIPTION

[0023] In order 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 described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work should fall within the scope of protection of the present application.

[0024] In the prior art, in order to prevent the water pump from getting stuck, the water pump is usually started regularly when the water pump is not running to move the bearings, thereby achieving the purpose of maintenance. At present, the method of controlling the regular operation of the water pump mainly relies on the commissioning personnel to set the interval operation time and continuous operation time of the water pump in the shutdown or standby state in the control system. The water pump will operate accordingly according to these preset parameters.

[0025] However, since the operation cycle of the water pump is fixed, this control method has poor flexibility, especially in areas with peak and valley electricity price systems, which may cause the water pump to operate during high electricity price periods, resulting in additional electricity consumption and increased operating costs.

[0026] In order 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 are described in detail below.

[0027] Embodiment 1 See also Figure 1 As shown, according to an embodiment of the present invention, the present invention provides a water pump operation control method, the water pump operation control method comprising: Step S11: When the water pump is in a stopped state, the minimum value of the operation interval of the water pump is obtained and timing is started.

[0028] Step S12: when the timing time reaches the minimum value, obtain and identify the current electricity price information sent by the power grid; Step S13: Adaptively adjust the operation interval of the water pump according to the current electricity price information.

[0029] It can be seen that the water pump operation control method provided by the present invention, when the water pump starts to be in a shutdown state, the system will obtain the minimum value of the operation interval of the water pump and start timing. Once the timing time reaches the minimum value, the system will start the electricity price monitoring stage, obtain and identify the current electricity price information sent by the power grid, and adaptively adjust the operation interval of the water pump. It can be seen that by setting the current electricity price information identification after reaching the minimum value of the operation interval of the water pump, it can be ensured that the water pump will not be restarted immediately after the shutdown, and at the same time, it is ensured that the water pump is started at least once within a certain period of time, thereby avoiding the loss and energy consumption caused by frequent start and stop, and preventing the equipment from rusting or damage caused by long-term shutdown, and protecting the equipment. At the same time, by adaptively adjusting the operation interval of the water pump according to the current electricity price information, it is possible to optimize the operation strategy in real time, avoid starting the water pump during the period of the highest electricity price, effectively reduce power consumption and operating expenses, especially during the period of high electricity prices, and improve overall energy efficiency. In addition, the method can also flexibly adapt to changes in electricity prices, reduce user electricity bills, and maximize economic benefits. By avoiding continuous operation during periods of high electricity prices, the workload of the water pump is reduced, the service life of the equipment is extended, and the maintenance and replacement costs are reduced. At the same time, the load on the power grid is balanced and the pressure on the power grid during peak hours is reduced. By dynamically monitoring electricity prices, the water pump can be flexibly adjusted according to the supply and demand conditions of different seasons to ensure that it is started at the appropriate time and avoid unnecessary energy waste. In addition, the control method of the present invention reduces the need for manual intervention, reduces operational complexity, improves the automation level of the system, and ensures stable operation of the system by automatically acquiring and identifying electricity price information and making adaptive adjustments. The water pump operation control method can effectively solve the technical problem in the prior art that the water system air conditioning unit fails to fully consider the dynamic changes of the electricity price signal when regularly starting the water pump during the transition season or when the unit is not in operation for a long time, which may lead to increased operating costs.

[0030] The "minimum time interval of the water pump" mentioned above refers to the shortest time interval that the water pump must wait before it can be started again after it stops running. The purpose of setting this time is to avoid frequent starting and stopping of the water pump, thereby effectively protecting the equipment and extending its service life.

[0031] Optionally, the minimum value of the operation interval of the water pump can be set by the user, or it can be directly set 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 when installing or commissioning the water pump; or the control system can automatically determine and set an optimal minimum value of the operation interval according to historical data and operation conditions.

[0032] Optionally, the water pump operation control system is communicatively connected to the power grid, and the processor can automatically identify the electricity price information of each price stage in the local time-of-use electricity price through the electricity price information sent by the smart grid, and store it, so that it can be used as an identification standard when the water pump needs to be controlled to operate on a scheduled basis during the transition season or when the air-conditioning unit is not in operation for a long time. When the electricity price monitoring stage is started, 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 price stage in the local time-of-use electricity price stored in the memory, identifies the specific current electricity price information, and adaptively adjusts the operation interval of the water pump according to the current electricity price information.

[0033] Optionally, in addition to automatically identifying 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 power grid, it can also be set manually according to local conditions, for example, according to local conditions. And the water pump operation control system is connected to the power grid in communication. When the electricity price monitoring stage is started, the water 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, identifies what the current electricity price information is, and adaptively adjusts the operation interval of the water pump according to the current electricity price information.

[0034] Specifically, according to the current electricity price information, the method for adaptively adjusting the operation interval of the water pump includes: obtaining the maximum value of the operation interval of the water pump; dividing the time between the minimum value and the maximum value into multiple continuous time intervals; in each time interval, judging whether it is necessary to convert the water pump from the stop state to the start state according to the current electricity price information. By adopting such a control method, by dividing the time between the minimum value and the maximum value into multiple continuous time intervals, it is possible to more accurately monitor the change of electricity prices and make more detailed operation decisions. This refined management can effectively avoid the waste of resources caused by simple start-stop strategies. Electricity prices usually fluctuate with time. By dividing the time interval, the system can respond to changes in electricity prices in real time, ensure that the water pump starts when the electricity price is low, reduce the operation during the peak period of electricity prices, and thus reduce operating costs. At the same time, by setting the time interval, the system can avoid unnecessary start and stop, protect the equipment, and extend its service life.

[0035] The "maximum running interval of the water pump" mentioned above refers to the maximum time that the water pump can run continuously in the running state. Once this time is reached, no matter what the current electricity price signal is, the system will force the water pump to start to prevent the water pump from malfunctioning or being damaged due to long-term non-operation.

[0036] Optionally, the maximum value of the operation interval of the water pump can be set by the user, or it can be directly set 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 when installing or commissioning the water pump; or the control system can automatically determine and set an optimal maximum value of the operation interval according to historical data and operation conditions.

[0037] Specifically, the method of dividing the duration between the minimum value and the maximum value into multiple continuous time intervals includes: if the electricity price information is N levels, the duration between the minimum value and the maximum value is divided into N-1 continuous time intervals, N ≥ 2. Adopting such a control method and dividing multiple continuous time intervals according to the electricity price information can enable the system to quickly adapt to the ever-changing electricity price environment and ensure that the water pump operates in the most appropriate time period. In addition, by dividing the duration between the minimum value and the maximum value into N-1 continuous time intervals and combining the electricity price information for intelligent decision-making, the operating efficiency of the water pump can be effectively improved, the operating cost can be reduced, the equipment can be protected, and the flexibility and intelligence level of the system can be enhanced.

[0038] Furthermore, if the electricity price information is divided into N levels, the duration between the minimum and maximum values ​​is divided into N-1 continuous time intervals, including; if the electricity price information is divided into four levels, the duration between the minimum and maximum values ​​is divided into three continuous time intervals, including: the first time interval, the second time interval and the third time interval. By adopting such a control method, the duration between the minimum and maximum values ​​is divided into three continuous first time intervals, the second time interval and the third time interval, so that staged detection can be achieved, thereby ensuring that the water pump is started in the most economical and most appropriate time period, while also avoiding starting in high electricity price periods, thereby achieving the effect of energy saving and consumption reduction and protecting equipment. At the same time, through staged detection, it can ensure that the water pump is started in the period with the lowest or lower electricity price, thereby significantly reducing energy consumption costs and reducing overall operating expenses.

[0039] It can be understood that the duration between the minimum and maximum values ​​is the time period during which the system dynamically monitors the electricity price information during the operation and control of the water pump. During this time period, the system will obtain electricity price information in real time to determine the current electricity price information and adaptively adjust the operation interval of the water pump.

[0040] Specifically, if the electricity price information includes: the lowest electricity price level, the lower electricity price level, the normal electricity price level and the highest electricity price level; in each time interval, according to the current electricity price information, a method for judging whether it is necessary to switch the water pump from a stopped operation state to a started operation state includes: in a first time interval, if it is identified that the current electricity price information is the lowest electricity price level, directly switch the water pump from a stopped operation state to a started operation state; otherwise, continue to keep the water pump in a stopped operation state until a second time interval; in a second time interval, if it is identified that the current electricity price information is the lowest electricity price level or the lower electricity price level, directly switch the water pump from a stopped operation state to a started operation state; otherwise, continue to keep the water pump in a stopped operation state until a third time interval; in a third time interval, if it is identified that the current electricity price information is the lowest electricity price level or the lower electricity price level or the normal electricity price level, directly switch the water pump from a stopped operation state to a started operation state; otherwise, after the third time interval ends, switch the water pump from a stopped operation state to a started operation state. By adopting such a control method, the system can respond to changes in electricity prices more comprehensively by dividing the time zone to determine whether the current electricity price information is the lowest level, the lowest level, the normal level, and the highest level, ensuring that the water pump is started at the right time and maximizing the use of the low electricity price period. And it can enable the system to flexibly adjust the operating state of the water pump according to the increase in the water pump operation interval and the real-time electricity price information, ensuring that the water pump operates during the period of low electricity prices, thereby effectively reducing operating costs. At the same time, the mechanism of setting the maximum value of the water pump operation interval ensures that the water pump can be started when necessary even when the electricity price is not appropriate. This can effectively prevent equipment failures caused by long-term shutdowns, such as bearing jams, and ensure the normal operation of the equipment. In addition, by intelligently judging the electricity price signal, the system can reasonably arrange the operation of the water pump in the appropriate period, optimize the overall energy efficiency, and reduce unnecessary electricity consumption. And, through the phased detection and response mechanism, the stability and reliability of the system are enhanced to ensure the effective operation of the water pump under different electricity price conditions.

[0041] Among them, the lowest electricity price level can be understood as the period when the electricity price is the lowest; the lower electricity price level can be understood as the period when the electricity price is lower; the normal electricity price level can be understood as the period when the electricity price is normal; and the highest electricity price level can be understood as the period when the electricity price is the highest.

[0042] Optionally, the duration of the first time interval, the duration of the second time interval, and the duration of the third time interval can be set manually. The user or the debugging personnel can set it according to the frequency of occurrence of the signal in each stage of the local actual smart grid and the sum of the duration of the first time interval, the duration of the second time interval, and the duration of the third time interval must be equal to the difference between the maximum value of the operation interval of the water pump and the minimum value of the operation interval of the water pump. For example, when the frequency of the lowest electricity price is low, the duration of the first time interval can be slightly increased. This ensures that the water pump control system is more in line with actual needs when it is running.

[0043] Optionally, in each time interval, according to the current electricity price information, the specific steps of the method for determining whether it is necessary to switch the water pump from the stopped operation state to the started operation state are: First, when the timing time reaches the minimum value of the set running interval of the water pump, the first time interval is entered. During the first time interval, the current electricity price information sent by the power grid is obtained and identified. If the identified current electricity price information is the lowest electricity price level, the water pump is controlled to switch from a stopped state to a started state. During the first time interval, if the identified current electricity price information is not the lowest electricity price level, the water pump is controlled to remain in a stopped state, and enter the second time interval.

[0044] Secondly, within the second time interval, continue to obtain the current electricity price information sent by the power grid, and identify in turn whether the current electricity price information is the lowest electricity price level or the lower electricity price level; if it is identified that the current electricity price information is the lowest electricity price level or the lower electricity price level, control the water pump from a stopped state to a started state; within the second time interval, if the identified current electricity price information is not the lowest electricity price level or the lower electricity price level, control the water pump to remain in a stopped state; and enter the third time interval.

[0045] Again, within the third time interval, continue to obtain the current electricity price information sent by the power grid, and identify in turn whether the current electricity price information is the lowest electricity price level, the lower electricity price level, or the normal electricity price level; if it is identified that the current electricity price information is the lowest electricity price level, the lower electricity price level, or the normal electricity price level, control the water pump from a stopped state to a started state; within the third time interval, if the identified current electricity price information is not the lowest electricity price level, the lower electricity price level, or the normal electricity price level, control the water pump to remain in a stopped state.

[0046] Finally, when the third time interval ends, the system reaches the maximum value of the water pump's operating interval. At this time, no matter what the current electricity price information is, the water pump is controlled to start, thereby ensuring that the water pump can start normally when necessary and preventing problems such as bearing jamming caused by long-term shutdown.

[0047] Specifically, the water pump operation control method also includes: when the water pump is switched from a stopped state to a started state, the running gear of the water pump is controlled according to the current electricity price information. By adopting such a control method, by dynamically adjusting the running gear of the water pump according to the current electricity price information, it is possible to make full use of resources when the electricity price is low, maximize operating efficiency, and reduce overall operating costs. In addition, this method can enable the water pump to flexibly respond to changes in electricity prices, ensure that the appropriate running gear is selected under different electricity price conditions, and thus optimize energy use.

[0048] Furthermore, according to the current electricity price information, the method for controlling the running gear of the water pump includes: if the electricity price information is divided into N levels, the running gear of the water pump is controlled to be inversely proportional to the level of the current electricity price information. By adopting such a control method, it is possible to make full use of low-priced electricity, thereby significantly reducing overall energy consumption and electricity expenses. Reducing high-frequency operation during high-electricity price periods can reduce equipment wear and failure rate and extend the service life of the water pump. In addition, the price differences in different time periods can be reasonably utilized to improve energy utilization efficiency, optimize resource allocation, and ensure that equipment utilization is maximized when electricity prices are low.

[0049] Among them, the operating gear of the water pump is inversely proportional to the level of the current electricity price information. It can be understood that when the electricity price is at a higher level, the operating gear of the water pump is lower; when the electricity price is at a lower level, the operating gear of the water pump is higher.

[0050] Furthermore, if the electricity price information is divided into N levels, the operating gear 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 gear of the water pump. With this control method, the operating gear of the water pump can be dynamically adjusted to adapt to the changes in different electricity price levels. This not only helps to save energy and reduce consumption, but also prolongs the life of the equipment, optimizes resource utilization, improves user experience, and reduces maintenance costs.

[0051] If the electricity price information includes: the lowest electricity price level, the lower electricity price level, the normal electricity price level and the highest electricity price level; if the current electricity price information is in a higher level, the method of controlling the running gear of the water pump to be lower includes: if the current electricity price information is identified as the lowest electricity price level, the water pump is operated at the first running gear; if the current electricity price information is identified as the lower electricity price level or the normal electricity price level, the water pump is operated at the second running gear; if the current electricity price information is identified as the highest electricity price level, the water pump is operated at the third running gear. Among them, the first running gear is greater than the second running gear, and the second running gear is greater than the third running gear. With such a control method, the power consumption is reduced by lowering the running gear of the water pump when the electricity price is high; when the electricity price is low, the running gear of the water pump is increased, and the low-priced electricity is fully utilized, thereby significantly reducing the overall energy consumption and electricity bill expenditure. Reasonably use the price differences in different time periods, improve energy utilization efficiency, optimize resource allocation, and ensure that the equipment utilization rate is maximized when the electricity price is low.

[0052] Optionally, the first operating gear is the highest operating gear, the second operating gear is the middle operating gear, and the third operating gear is the lowest operating gear.

[0053] Specifically, the current electricity price information sent by the power grid is obtained by connecting to the SG signal output terminal and the EVU signal output terminal of the power grid to obtain the current electricity price information sent by the power grid. With such a control method, the current electricity price information can be obtained in real time by connecting to the SG signal output terminal and the EVU signal output terminal of the power grid to ensure the timeliness and accuracy of the control strategy. Furthermore, the operating state of the water pump can be quickly adjusted according to the real-time electricity price information, thereby significantly reducing the overall energy consumption and electricity bill expenditure.

[0054] Specifically, the water pump operation control method also includes: when the water pump starts to be in a shutdown state, the total dissolved solid content in the water in the current water pump is obtained, and it is determined whether the total dissolved solid content in the water in the current water pump is greater than or equal to a preset threshold; if the total dissolved solid content in the water in the current water pump is greater than or equal to the preset threshold, the water pump is controlled to start; if the total dissolved solid content in the water in the current water pump is less than the preset threshold, the interval between the start and stop of the water pump is adaptively adjusted according to the current electricity price information. With such a control method, the water quality in the water pump is ensured by real-time monitoring of the total dissolved solids (TDS) content in the water in the water pump. When the total dissolved solid content in the water in the water pump is greater than or equal to the preset threshold, the water pump is started immediately, thereby reducing the formation of scale in the water pump, preventing the water pump from getting stuck, and other problems, thereby extending the service life of the equipment. At the same time, combined with the dual judgment of water quality monitoring and electricity price information, the system can flexibly adjust the operation strategy according to the actual water quality and electricity price changes, thereby improving the adaptability and flexibility of the system. By real-time monitoring of water quality and dynamically adjusting the operation strategy, the system is ensured to operate in the optimal state, and the overall performance and energy efficiency of the system are improved.

[0055] Furthermore, when the water pump is controlled to switch from a stop state to a start state, and the water pump operation time reaches a preset operation time, the water pump is controlled to stop running, and the timing is restarted. By adopting such a control method, by setting a preset operation time, it is ensured that the water pump stops running after reaching the preset operation time, avoiding unnecessary long-term operation, thereby significantly reducing energy consumption and reducing overall operating costs. By controlling the water pump to stop running after reaching the preset operation time, overload and overheating caused by long-term continuous operation of the water pump can be avoided, and the service life of the equipment can be extended. Regular starting and stopping of operation helps with regular maintenance of equipment and reduces equipment failures and maintenance costs caused by long-term operation. In addition, it helps prevent the deposition of scale inside pipes and water pumps, keeping the system clean and running efficiently.

[0056] Optionally, the specific implementation steps of the water pump operation control method are as follows (taking the water pump in the air conditioning unit as an example): Step 100, when the air conditioning unit is not in operation for a long time, the water pump of the air conditioning unit is in a shutdown state. When the water pump starts to be in a shutdown state, the shortest operation interval time of the water pump (i.e., the minimum value of the operation interval time of the water pump) and the longest operation interval time (i.e., the longest value of the operation interval time of the water pump) are immediately obtained, and the timing is started. Then, when the timing time reaches the shortest operation interval time (i.e., the minimum value of the operation interval time of the water pump), the electricity price monitoring stage is immediately entered to start obtaining and identifying the electricity price signal.

[0057] Among them, according to the current actual situation, the set shortest operation interval time (i.e. the minimum value of the operation interval time of the water pump) and the set longest operation interval time (i.e. the maximum value of the operation interval time of the water pump), the duration of the first time interval, the duration of the second time interval and the duration of the third time interval are set in advance. When the timing time reaches the shortest operation interval time (i.e. the minimum value of the operation interval time of the water pump), it immediately enters the first time interval.

[0058] Step 101, enter the first time interval, in the first time interval, obtain and identify the current electricity price information sent by the power grid, if the identified current electricity price information is the lowest price level, then stop timing, and control the water pump to run at the first running gear, when the water pump running time reaches the preset running time, control the water pump to stop running; and restart the timing. Otherwise, control the water pump to remain in the stopped state, and continue to count while repeating the above step 101 until entering the second time interval.

[0059] Step 102, after entering the second time interval, within the second time interval, continue to obtain the current electricity price information sent by the power grid, and identify in turn whether the current electricity price information is the lowest electricity price level or the lower electricity price level. If it is identified that the current electricity price information is the lowest electricity price level, then stop timing, and control the water pump to run at the first operating gear. When the water pump running time reaches the preset running time, control the water pump to stop running; and restart timing. If it is identified that the current electricity price information is a lower electricity price level, and control the water pump to run at the second operating gear, when the water pump running time reaches the preset running time, control the water pump to stop running; and restart timing. If the identified current electricity price information is not the lowest electricity price level or the lower electricity price level, control the water pump to remain in a stopped state; and continue timing while repeating the above step 102 until entering the third time interval.

[0060] Step 103, after entering the third time interval, within the third time interval, continue to obtain the current electricity price information sent by the power grid, and identify in turn whether the current electricity price information is the lowest electricity price level, the lower electricity price level, or the normal electricity price level. If the current electricity price information is identified as the lowest electricity price level, then stop timing, and control the water pump to run at the first operating gear. When the water pump running time reaches the preset running time, control the water pump to stop running; and restart timing. If the current electricity price information is identified as the lower electricity price level or the normal electricity price level, and the water pump is controlled to run at the second operating gear, when the water pump running time reaches the preset running time, control the water pump to stop running; and restart timing. If the identified current electricity price information is not the lowest electricity price level or the lower electricity price level or the normal electricity price level, then control the water pump to remain in a stopped state; and continue timing while repeating the above step 103 until the end of the third time interval (that is, when the timing time reaches the longest running interval time).

[0061] Step 104, when the timing time reaches the longest operation interval time, obtain and identify the current electricity price information, select the corresponding operation gear to control the water pump to run according to the identified result, and when the water pump running time reaches the preset running time, control the water pump to stop running; and restart the timing.

[0062] Step 105, when the water pump starts to be in a shutdown state, the system will also synchronously obtain the content of total dissolved solids in the water in the water pump in real time, and compare the content of total dissolved solids in the water in the current water pump with the preset threshold value. If the content of total dissolved solids in the water in the current water pump is greater than or equal to the preset threshold value, the water pump is controlled to run, and the water pump is controlled to select the corresponding operating gear according to the actual situation to run, and at the same time, the timing will be stopped. When the running time of the water pump reaches the preset running time, the water pump is controlled to stop running; and the timing is restarted. If the content of total dissolved solids in the water in the current water pump is less than the preset threshold value, the system will continue to obtain the content of total dissolved solids in the water in the water pump in real time, and compare the content of total dissolved solids in the water in the current water pump with the preset threshold value. At the same time, any one of steps 100 to 104 will continue to be executed.

[0063] Embodiment 2 Figure 2 is a flow chart of a water pump operation control method according to another exemplary embodiment. Figure 2 As shown, the method includes: First, when the water pump is in a shutdown state, the shortest operation interval tmin, the longest operation 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 operation interval tmax and the shortest operation interval tmin of the water pump are obtained, and the timing is started. Then, when the timing time reaches the shortest operation interval tmin, the electricity price signal monitoring stage is immediately entered (that is, it enters the first time period t1), and the real-time acquisition of electricity price signals begins.

[0064] Secondly, in the first time period t1, the controller obtains the current electricity price signal from the smart grid for identification, and determines whether the current electricity price signal obtained by the controller from the smart grid is the lowest electricity price signal (Switch-on command). If it is identified as the lowest electricity price signal (Switch-on command), the water pump is controlled to run at the highest gear. After the water pump running time reaches the preset running time, the water pump is controlled to stop running and the timing is restarted. Otherwise, the timing continues, and the controller continues to obtain and identify the electricity price signal from the smart grid.

[0065] Again, as time goes by, when entering the second time period t2, the controller continues to obtain the electricity price signal from the smart grid, and identifies the current electricity price signal obtained by the controller from the smart grid to determine whether the current electricity price signal obtained by the controller from the smart grid is the lowest electricity price signal (Switch-on command). If it is identified as the lowest electricity price signal (Switch-on command), the water pump is controlled to run at the highest gear. After the water pump running time reaches the preset running time, the water pump is controlled to stop running and the timing is restarted. If it is identified as a lower electricity price signal (Switch-on signa). The water pump is controlled to run at a medium gear. After the water pump running time reaches the preset running time, the water pump is controlled to stop running and the timing is restarted. If it is not identified as a lower electricity price signal (Switch-on signa), the timing continues, and the controller continues to obtain the electricity price signal from the smart grid and identifies whether it is the lowest electricity price signal (Switch-on command) or the lower electricity price signal (Switch-on signa).

[0066] Again, as time goes by, when entering the third time period t3, the controller continues to obtain the electricity price signal from the smart grid, and identifies the current electricity price signal obtained by the controller from the smart grid to determine whether the current electricity price signal obtained by the controller from the smart grid is the lowest electricity price signal (Switch-on command). If it is identified as the lowest electricity price signal (Switch-on command), the water pump is controlled to run at the highest gear. After the water pump running time reaches the preset running time, the water pump is controlled to stop running and the timing is restarted. If it is identified as a lower electricity price signal (Switch-on signa), the water pump is controlled to run at a medium gear. After the water pump running time reaches the preset running time, the water pump is controlled to stop running and the timing is restarted. If it is identified as a normal electricity price signal (Standard operation), the water pump is controlled to run at a medium gear. After the water pump running time reaches the preset running time, the water pump is controlled to stop running and the timing is restarted. If it is not identified as a normal electricity price signal (Standard operation), the timing continues, and the controller continues to obtain the electricity price signal from the smart grid and identifies whether it is a minimum electricity price signal (Switch-on command) or a low electricity price signal (Switch-on signa) or a normal electricity price signal (Standard operation).

[0067] Finally, as time goes by, when the timing reaches the longest interval running time, the controller will obtain the electricity price signal from the smart grid, and identify the current electricity price signal obtained by the controller from the smart grid, whether it is the lowest electricity price signal (Switch-on command), the lower electricity price signal (Switch-on signa), the normal electricity price signal (Standard operation), or the highest electricity price signal (Switch-off command). When it is identified as the lowest electricity price signal (Switch-on command), the water pump is controlled to run at the highest gear. If it is identified as a lower electricity price signal (Switch-on signa) or a normal electricity price signal (Standard operation), the water pump is controlled to run at the middle gear; if it is identified as the highest electricity price signal (Switch-off command), the water pump is controlled to run at the lowest gear. After the water pump running time reaches the preset running time, the water pump is controlled to stop running and the timing is restarted.

[0068] It should be noted that the "shortest operation interval time tmin" mentioned above refers to the shortest time interval that the water pump must wait before it can be started again after it stops running. The purpose of this time setting is to avoid frequent start and stop of the water pump, thereby protecting the equipment and extending its service life. The "longest operation interval time tmax" mentioned above refers to the longest time that the water pump can run continuously in the running state. Once this time is reached, no matter what the current electricity price signal is, the system will force the water pump to start to prevent the water pump from malfunctioning or being damaged due to long-term non-operation.

[0069] Optionally, the shortest operation interval time tmin and the longest operation interval time tmax of the water pump can be set by the user, or can be directly set at the factory according to the model and condition of the water pump. Alternatively, the commissioning personnel can set it according to the actual situation when installing or commissioning the water pump.

[0070] It should be noted that the duration of the first time period t1, the duration of the second time period t2 and the duration of the third time period t3 are set manually. Users or commissioning personnel can set them according to the frequency of occurrence of signals in each stage of the local actual smart grid and must meet the requirement that the sum of the duration of the first time period t1, the duration of the second time period t2 and the duration of the third time period t3 is equal to the difference between the longest operation interval tmax and the shortest operation interval tmin of the water pump. 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 water pump control system is more in line with actual needs when running.

[0071] Optionally, the main board of the system controller provides two contact interfaces, which are respectively connected to two signals (SG and EVU) of the smart grid, so that the main board can recognize four signals, which are as follows: Table 1 Electricity price signal correspondence table Among them, when the signal sent by the SG of the smart grid is 1 and the signal sent by the EVU is 0, the signal obtained by the controller is the highest electricity price signal (Switch-off command), and the power consumption should be reduced as much as possible to avoid high electricity bills.

[0072] When the signals sent by the SG and EVU of the smart grid are both 0, the signal obtained by the controller is a normal electricity price signal (Standard operation), which means that the electricity price is at a normal level.

[0073] When the signal sent by the smart grid SG is 0 and the signal sent by the EVU is 1, the signal obtained by the controller is a lower electricity price signal (Switch-on signa), which means that the electricity price is lower.

[0074] When the signals sent by the SG and EVU of the smart grid are both 1, the signal obtained by the controller is the lowest electricity price signal (Switch-on command), which means that the electricity price is very low.

[0075] Among them, two contact interfaces provided on the main board of the system controller for connecting the SG signal and EVU signal of the smart grid respectively have SG-Ready certification.

[0076] Embodiment 3 The present invention provides a water pump operation control system, comprising: 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 execute the water pump operation control method of the above-mentioned embodiment one or embodiment two. With such a structural setting, the intelligent control of the water pump operation is realized through the cooperation of the processor and the memory. By dynamically adjusting the operating gear and real-time monitoring of electricity price information, the system can significantly reduce energy consumption and electricity expenditure, extend equipment life, optimize resource utilization, improve user experience, and reduce maintenance costs. At the same time, real-time monitoring of water quality ensures the safety and reliability of the system.

[0077] Specifically, two contact interfaces are reserved on the processor, which are respectively connected to the SG signal output terminal and the EVU signal output terminal of the power grid. With such a structural setting, by reserving two contact interfaces on the processor, which are respectively connected to the SG signal output terminal and the EVU signal output terminal of the power grid, the processor can be connected to the SG signal output terminal and the EVU signal output terminal of the power grid, so that it can obtain the current electricity price information in real time, ensuring the timeliness and accuracy of the control strategy. Furthermore, the operating state of the water pump can be quickly adjusted according to the real-time electricity price information, thereby significantly reducing the overall energy consumption and electricity bill expenditure.

[0078] Specifically, the water pump operation control system is applicable to the water pump operation control method of the above-mentioned embodiment 1, 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 content of total dissolved solids in the water in the water pump. With such a structural setting, the total dissolved solids (TDS) content in the water in the water pump can be monitored in real time by setting the water quality detector to ensure the water quality in the water pump. When the content of total dissolved solids in the water in the water pump is greater than or equal to the preset threshold, the water pump is started immediately, thereby reducing the formation of scale in the water pump and preventing the water pump from getting stuck, thereby extending the service life of the equipment. At the same time, combined with the dual judgment of water quality monitoring and electricity price signals, the system can flexibly adjust the operation strategy according to the actual water quality and electricity price changes, thereby improving the adaptability and flexibility of the system. By real-time monitoring of water quality and dynamically adjusting the operation strategy, it is ensured that the system operates in the optimal state and improves the overall performance and energy efficiency of the system.

[0079] In actual working process, a TDS water quality monitoring instrument will be installed in the pipeline of the water pump to measure the water quality in the water pump.

[0080] Embodiment 4 The present invention provides 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 of the above-mentioned embodiment 3. By arranging the water pump operation control system in the air-conditioning water pump, the probability of the water pump anti-stuck operation at high electricity prices can be reduced, the operating energy consumption of the air-conditioning water pump can be reduced, and the purpose of energy saving and water pump anti-stuck can be achieved. At the same time, equipment wear is reduced, the service life of the equipment is extended, and the maintenance cost is reduced.

[0081] Embodiment 5 The present invention provides an air conditioning unit, comprising: an air conditioning water pump, wherein the air conditioning water pump is the air conditioning water pump of the above-mentioned embodiment 4. By arranging the air conditioning water pump in the air conditioning unit, the operating energy consumption of the air conditioning unit can be reduced, thereby reducing the overall operating cost.

[0082] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable when appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0083] Optionally, the specific examples in this embodiment may refer to the examples described in the above embodiments, and this embodiment will not be described in detail here.

[0084] The serial numbers of the above-mentioned embodiments of the present application are for description only and do not represent the advantages or disadvantages of the embodiments.

[0085] In the above embodiments of the present application, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, please refer to the relevant description of other embodiments.

[0086] The above is only a preferred embodiment of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. A water pump operation control method, characterized in that: The water pump operation control method comprises: When the water pump starts to stop running, the minimum value of the running interval of the water pump is obtained and timing is started; When the timing time reaches the minimum value, obtaining and identifying current electricity price information sent by the power grid; According to the current electricity price information, the operation interval duration of the water pump is adaptively adjusted.

2. The water pump operation control method according to claim 1, characterized in that: The method for adaptively adjusting the operation interval of the water pump according to the current electricity price information comprises: Obtaining the maximum value of the operation interval duration of the water pump; Divide the duration between the minimum value and the maximum value into a plurality of continuous time intervals; In each time interval, it is determined whether the water pump needs to be switched from a stopped operation state to a started operation state according to the current electricity price information.

3. The water pump operation control method according to claim 2, characterized in that: The method of dividing the duration between the minimum value and the maximum value into a plurality of continuous time intervals includes: If the electricity price information has N levels, the duration between the minimum value and the maximum value is divided into N-1 continuous time intervals, where N≥2.

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

5. The water pump operation control method according to claim 4, characterized in that: If the electricity price information includes: the lowest electricity price level, the lower electricity price level, the normal electricity price level and the highest electricity price level; the method for determining whether it is necessary to switch the water pump from the stopped operation state to the started operation state in each time interval according to the current electricity price information includes: In the first time interval, if it is identified that the current electricity price information is the lowest level of electricity price, the water pump is directly switched from the stopped state to the started state; otherwise, the water pump is kept in the stopped state until the second time interval; In the second time interval, if it is identified that the current electricity price information is the lowest level or a relatively low level, the water pump is directly switched from the stopped state to the started state; otherwise, the water pump is kept stopped until the third time interval; Within the third time interval, if it is identified that the current electricity price information is the lowest level, a relatively low level, or a normal level, the water pump is directly switched from a stopped state to a started state; otherwise, after the third time interval ends, the water pump is switched from a stopped state to a started state.

6. The water pump operation control method according to claim 1, characterized in that: The water pump operation control method further comprises: When the water pump is switched from a stopped operation state to a started operation state, the operation gear of the water pump is controlled according to the current electricity price information.

7. The water pump operation control method according to claim 6, characterized in that: The method for controlling the operating gear of the water pump according to the current electricity price information comprises: If the electricity price information is divided into N levels, the operating level of the water pump is controlled to be inversely proportional to the level of the current electricity price information.

8. The water pump operation control method according to claim 7, characterized in that: If the electricity price information is divided into N levels, the running level of the water pump is controlled to be 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 running level of the water pump will be.

9. The water pump operation control method according to claim 8, characterized in that: If the electricity price information includes: the lowest electricity price level, the lower electricity price level, the normal electricity price level and the highest electricity price level; the method of controlling the running gear of the water pump to be lower if the level of the current electricity price information is higher includes: If it is identified that the current electricity price information is the lowest level of electricity price, the water pump operates at the first operating gear; If it is identified that the current electricity price information is a low electricity price level or a normal electricity price level, the water pump operates at the second operating level; If it is identified that the current electricity price information is the highest level of electricity price, the water pump operates at the third operating gear; The first operating gear is greater than the second operating gear, and the second operating gear is greater than the third operating gear.

10. The water pump operation control method according to any one of claims 1 to 9, characterized in that: The obtaining of the current electricity price information sent by the power grid is specifically as follows: By connecting to the SG signal output terminal and the EVU signal output terminal of the power grid, the current electricity price information sent by the power grid is obtained.

11. The water pump operation control method according to claim 1, characterized in that: The water pump operation control method further comprises: When the water pump starts to be in a stopped state, obtaining the total dissolved solid content in the water in the water pump, and determining whether the total dissolved solid 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 water pump is currently greater than or equal to the preset threshold, controlling the water pump to start; If the total dissolved solid content in the water in the water pump is currently less than the preset threshold, the interval duration of starting and stopping the water pump is adaptively adjusted according to the current electricity price information.

12. 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 11.

13. The water pump operation control system according to claim 12, characterized in that: The processor is provided with two contact interfaces respectively connected to the SG signal output terminal and the EVU signal output terminal of the power grid.

14. The water pump operation control system according to claim 12, characterized in that: The water pump operation control system is applicable to the water pump operation control method of claim 11, and the water pump operation control system further comprises: A water quality detector is connected to the processor; the water quality detector is used to detect the content of total dissolved solids in the water in the water pump.

15. 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 according to any one of claims 12 to 14.

16. 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 according to claim 15.

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