A control method, device and system for water pump operation

Abstract

The application provides a control method, device and system for water pump operation, and the method comprises the following steps: acquiring a flow state signal of a water pump installed on a backwater pipeline of a water heater; controlling the water pump to enter a hot water circulation operation stage according to the flow state signal; acquiring a water temperature signal of the water pump in the hot water circulation operation stage; and controlling the water pump to enter a pressure boosting operation stage according to the temperature signal. The scheme provided by the application can realize the integration of the hot water circulation and pressure boosting functions of the water pump, and improve the working efficiency of the water pump.

Description

Technical Field

[0001] This invention relates to the field of water pump control technology, and in particular to a method, device and system for controlling the operation of a water pump. Background Technology

[0002] Currently, the market offers separate zero-cold-water circulation pumps and booster pumps, requiring two pumps to perform their respective functions. For example, pump A provides additional pressure to the pipes when the user uses water; this is a booster pump for an open system. Pump B, on the other hand, circulates the hot water in a closed system, circulating it throughout the house, when the user uses zero-cold-water circulation.

[0003] When using a single water pump, it is installed on the user's return water pipe. When the user needs hot water, the pump is started at the pump location. The pump distributes the hot water from the water heater to each water point (at this time, the faucets are closed). After several minutes, the user can directly use hot water by turning on the faucet; there is no cold water section. Alternatively, if only a separate circulation function is available, operation at the pump location is required.

[0004] Traditional booster pumps use flow signals; as long as there is flow, they will continuously work to increase pressure. In the case of users with return water pipes, the presence of the return pipes causes water to flow continuously in the water circuit. This means that even if the user stops using water, the pump will continue to operate, resulting in a situation where the pump cannot be stopped.

[0005] Traditional water pumps are often installed in hidden corners and are operated manually. When boosting or circulating water, a person needs to operate the pump directly, which is inconvenient to use. Summary of the Invention

[0006] The technical problem to be solved by the present invention is to provide a method, device and system for controlling the operation of a water pump, so as to improve the working efficiency of the water pump and reduce the manual handling cost.

[0007] To solve the above-mentioned technical problems, the technical solution of the present invention is as follows:

[0008] A method for controlling the operation of a water pump includes:

[0009] Obtain the flow status signal of the water pump installed on the return water pipe of the water heater;

[0010] Based on the flow status signal, the water pump is controlled to enter the hot water circulation operation stage;

[0011] Acquire the water temperature signal during the hot water circulation phase of the water pump;

[0012] Based on the temperature signal, the water pump is controlled to enter the booster operation phase.

[0013] Optionally, acquire the flow status signal of the water pump installed on the return water pipe of the water heater, including:

[0014] Based on the opening and closing status of the faucet installed on the water supply pipeline of the water heater within a first preset time period, the water pump obtains a first flow signal when the faucet is open and a second flow signal when the faucet is closed.

[0015] The flow status signal of the water pump is obtained based on the changes in the first flow signal and the second flow signal.

[0016] Optionally, based on the flow status signal, controlling the water pump to enter the hot water circulation operation phase includes:

[0017] When the flow status signal is a pulse signal with varying high and low values, the water pump is controlled to start;

[0018] During the second preset time period after the water pump is started, the water pump is controlled to enter the hot water circulation operation stage.

[0019] Optionally, during the hot water circulation operation phase, the water pump further includes:

[0020] The water heater is controlled to heat the water in the water pump circulation pipe, and the heated water is controlled to flow in the water pump circulation pipe.

[0021] Optionally, based on the temperature signal, controlling the water pump to enter the booster operation phase includes:

[0022] When the temperature signal equals the first preset temperature and the tap is detected to be open, the water pump is controlled to enter the booster operation stage; otherwise, the water pump is controlled to stop running.

[0023] Optionally, during the pressurization phase, the water pump further includes:

[0024] Obtain the water flow rate of the water pump during the booster operation phase;

[0025] The water pump is controlled to stop operating based on the water flow rate and / or the operating time threshold of the pressurization operation phase.

[0026] Optionally, based on the water flow rate during the booster operation phase and / or the operating time threshold of the booster operation phase, the water pump is controlled to stop operating, including:

[0027] When the water flow rate during the pressurization phase is the same as the water flow rate during the hot water circulation phase, the water pump is controlled to stop operating; and / or

[0028] When the duration of the pressurization phase exceeds a preset time threshold, the water pump is controlled to stop operating.

[0029] Embodiments of the present invention also provide a control device for the operation of a water pump, comprising:

[0030] The acquisition module is used to acquire the flow status signal of the water pump installed on the return water pipe of the water heater, and to acquire the water temperature signal of the water pump during the hot water circulation operation phase.

[0031] The control module is used to control the water pump to enter the hot water circulation operation stage according to the flow status signal; and to control the water pump to enter the pressurization operation stage according to the temperature signal.

[0032] Embodiments of the present invention also provide a control system for the operation of a water pump, comprising:

[0033] A water pump is installed on the return water pipe of the water heater, and the two ends of the return water pipe are respectively connected to the cold water pipe and the hot water pipe of the heater;

[0034] A flow sensor is fixedly connected to one end of the water pump and placed in the return water pipe to monitor the flow status signal of the water pump.

[0035] A temperature sensor is fixedly connected to the other end of the water pump and placed in the return water pipe to monitor the water temperature signal during the hot water circulation operation of the water pump.

[0036] The controller is communicatively connected to the flow sensor and the temperature sensor, respectively, for acquiring the flow status signal of the water pump and controlling the water pump to enter the hot water circulation operation stage according to the flow status signal; acquiring the water temperature signal of the water pump in the hot water circulation operation stage; and controlling the water pump to enter the pressurization operation stage according to the temperature signal.

[0037] Optionally, the control system for the operation of the water pump further includes:

[0038] A water heater, which is communicatively connected to the controller, heats the water in the water pump circulation pipeline during the hot water circulation phase of the water pump, based on the flow status signal.

[0039] The above-described solution of the present invention has at least the following beneficial effects:

[0040] The above-described solution of the present invention acquires the flow status signal of the water pump installed on the return water pipe of the water heater; controls the water pump to enter the hot water circulation operation stage according to the flow status signal; acquires the water temperature signal of the water pump in the hot water circulation operation stage; and controls the water pump to enter the pressurization operation stage according to the temperature signal. This integrates the hot water circulation function and the pressurization function of the water pump, resulting in a wider range of applications, more reliable control, improved water pump operating efficiency, and reduced manual handling costs. Attached Figure Description

[0041] Figure 1 This is a flowchart of the water pump operation control method provided in the embodiments of the present invention;

[0042] Figure 2 This is an installation schematic diagram of a water pump control system provided in an optional embodiment of the present invention;

[0043] Figure 3 This is a schematic diagram of the structure of a water pump control system provided in an optional embodiment of the present invention;

[0044] Figure 4 This is a schematic diagram of the working timing of a water pump control system provided in an optional embodiment of the present invention;

[0045] Figure 5 This is a schematic block diagram of a control device for pump operation provided in an optional embodiment of the present invention.

[0046] The following are the symbols and their meanings: 1. Water heater; 2. Recirculating water system; 3. Faucet; 4. Hot water pipe; 5. Cold water pipe; 6. Return water pipe. Detailed Implementation

[0047] Exemplary embodiments of the invention will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the invention are shown in the drawings, it should be understood that the invention may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this invention will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

[0048] like Figure 1 and Figure 2 As shown, an embodiment of the present invention proposes a method for controlling the operation of a water pump, comprising:

[0049] Step 11: Obtain the flow status signal of the water pump installed on the return water pipe of the water heater;

[0050] Step 12: Based on the flow status signal, control the water pump to enter the hot water circulation operation stage;

[0051] Step 13: Obtain the water temperature signal during the hot water circulation operation phase of the water pump;

[0052] Step 14: Based on the temperature signal, control the water pump to enter the booster operation stage.

[0053] In this embodiment, the flow status signal is used to characterize the water flow value at the water pump when it is in a stopped state. The water flow value at the water pump can reflect whether the user needs water. The flow status signal can be monitored in real time based on the set flow sensor. According to the monitored flow status signal, the water pump is controlled to start running, and the water pump is further controlled to enter the hot water circulation operation stage.

[0054] Furthermore, based on the set temperature sensor, the temperature of the hot water at the water pump during the hot water circulation operation phase can be monitored in real time and used as a water temperature signal; then, based on the temperature signal, the water pump can be controlled to end the hot water circulation operation phase and enter the pressurization operation phase, so as to realize the integration of the water pump's thermal circulation and pressurization functions, and precisely control the water pump to switch from the start-up operation phase to the thermal circulation operation phase and then to the pressurization operation phase, thereby improving the working efficiency of the water pump.

[0055] In an optional embodiment of the present invention, step 11 above may include:

[0056] Step 111: Based on the opening and closing status of the faucet installed on the water supply pipe of the water heater within a first preset time period, obtain the first flow signal of the water pump when the faucet is open and the second flow signal when the faucet is closed.

[0057] Step 112: Obtain the flow status signal of the water pump based on the changes in the first flow signal and the second flow signal.

[0058] In this embodiment, the first flow signal represents the first water flow value at the water pump when the water pump is in a stopped state and the faucet on the water supply pipe of the water heater is in an open state; the second flow signal represents the second water flow value at the water pump when the water pump is in a stopped state and the faucet on the water supply pipe of the water heater is in a closed state; the first water flow value is greater than the second water flow value.

[0059] It should be understood that when the water pump is in a stopped state, the opening and closing of the faucet constitutes a complete cycle of water flow change at the water pump; within the first preset time period, the first flow signal and the second flow signal are obtained within a complete cycle of water flow change at the water pump, so as to obtain a flow status signal within a complete cycle, which facilitates subsequent precise control of the water pump operation and improves the operating efficiency of the water pump.

[0060] Preferably, when the water flow rate change period is measured twice consecutively by the flow sensor, and each complete period includes a first flow signal and a second flow signal (that is, the user turns the faucet on and off twice consecutively within a first preset time period, for example: the user turns the faucet on and off twice consecutively within 10 seconds); based on the changes in the first flow signal and the second flow signal in each period, a flow status signal containing the first flow signal and the second flow signal is obtained for the water flow rate at the pump within a complete change period.

[0061] In an optional embodiment of the present invention, step 12 above may include:

[0062] Step 121: When the flow status signal is a pulse signal with high and low changes, control the water pump to start;

[0063] Step 122: During the second preset time period after the water pump is started, control the water pump to enter the hot water circulation operation stage.

[0064] In this embodiment, when the flow status signal is two consecutive pulse signals with varying high and low values, the water pump is controlled to start running;

[0065] Furthermore, within a second preset time period after the water pump is started, the water pump is controlled to enter the hot water circulation operation stage so as to quickly respond to user needs; the second preset time period can be set according to actual needs, and the water pump is controlled to enter the hot water circulation operation stage within the second preset time period to improve the operating efficiency of the water pump and reduce the cost of manual operation.

[0066] In an optional embodiment of the present invention, the water pump may further include:

[0067] Step 123: Control the water heater to heat the water in the water pump circulation pipe and control the flow of the heated water in the water pump circulation pipe.

[0068] In this embodiment, the water pump circulation pipeline may include: a cold water pipe, a hot water pipe, and a return water pipe; when the water pump enters the hot water circulation operation stage, the water heater heats the water in the hot water pipe of the water pump circulation pipeline and controls the water pump to continue running, causing the heated water to flow in the water pump circulation pipeline, so as to increase the temperature of the water in the entire water pump circulation pipeline; at the same time, the water flow rate and water temperature at the water pump are monitored in real time by flow sensors and temperature sensors, so as to make judgments and accurately control the water pump to enter the subsequent process, thereby improving the working efficiency of the water pump.

[0069] In an optional embodiment of the present invention, step 14 above may include:

[0070] Step 141: When the temperature signal is equal to the first preset temperature and the tap is detected to be open, control the water pump to enter the booster operation stage; otherwise, control the water pump to stop running.

[0071] In this embodiment, during the second preset time period, when the temperature sensor detects that the temperature signal (the temperature of the water at the water pump) is equal to the first preset temperature, and at this time the faucet is detected to be open, the water pump is controlled to stop the hot water circulation operation. However, the water pump will still continue to run at this time, and then the water pump is controlled to directly enter the pressurization operation stage to increase the water flow in the water supply pipeline and meet the user's water demand.

[0072] When the temperature signal is less than the first preset temperature, it indicates that the water temperature has not reached the expected value during the second preset time period of continuous hot water circulation. At this time, the water pump is controlled to stop hot water circulation and the water pump is directly stopped to reduce the water pump's operating power and risk.

[0073] In an optional embodiment of the present invention, the water pump further includes, during the pressurization operation phase:

[0074] Step 142: Obtain the water flow rate of the water pump during the booster operation phase;

[0075] Step 143: Control the water pump to stop operating based on the water flow rate and / or the operating time threshold of the pressurization operation phase.

[0076] In this embodiment, during the pump boosting operation phase, the water flow rate at the pump is monitored in real time as the boosting operation duration changes, so as to accurately control the operation of the pump and improve the pump operating efficiency.

[0077] It should be noted that during the pressurization phase, the water flow rate should be the sum of the official water flow rate and the water flow rate pumped by the pump to achieve the pressurization effect. The water flow rate at this time should be greater than the water flow rate during the hot water circulation phase and the initial flow rate of the pump. As the pump operates stably, the water flow rate should remain stable near a fixed value. At the same time, due to the continuous operation of the pump and the injection of cold water, the water temperature at the pump will decrease.

[0078] In an optional embodiment of the present invention, step 143 above may include:

[0079] Step 1431-a: When the water flow rate during the pressurization phase is the same as the water flow rate during the hot water circulation phase, control the water pump to stop operating; and / or

[0080] Step 1431-b: When the duration of the pressurization operation phase exceeds a preset time threshold, control the water pump to stop operating.

[0081] In this embodiment, when the flow sensor detects that the water flow rate during the pressurization phase is decreasing and decreasing to the same level as the water flow rate during the hot water circulation phase, and remains stable at around the level of the water flow rate during the hot water circulation phase for a period of time, it indicates that the user has turned off the tap and no longer needs to use water. The water flow rate at this time is only the water flow rate generated by the hot water flow caused by the water pump running. Then, the water pump is controlled to stop the pressurization phase and directly controlled to stop running, avoiding energy loss and blade wear caused by continuous operation of the water pump.

[0082] When the pump runs for more than a preset time threshold during the boosting operation phase, considering the energy loss of the pump and the wear of the pump blades, it is necessary to control the pump to stop the boosting operation phase and directly control the pump to stop running in order to reduce the pump's operating energy consumption.

[0083] By monitoring the water flow rate and / or the duration of pressurization during the pressurization phase in real time, and using the water flow rate and / or the duration of pressurization as indicators, the pressurization phase of the water pump can be precisely controlled, thereby reducing the energy consumption of the water pump and preventing damage to the water pump.

[0084] The above control method will be illustrated with a specific example below, covering the entire process from pump startup to shutdown, such as... Figure 4 As shown, the specific steps may include:

[0085] Step 41, Initial stage: Obtain the flow status signal (water flow rate) of the water pump installed on the return pipe of the water heater;

[0086] Step 411: Within the first preset time period, the number of times the faucet is continuously opened and closed is detected, such as when the user turns the faucet on and off twice within 10 seconds; at this time, the water flow rate through the water pump will fluctuate twice (e.g., Figure 4 As shown, the water flow rate is 0->F1->0->F1->0), which will cause the water flow sensor to generate two pulse signals. Based on the two pulse signals from the water flow sensor, the water pump is started and the process proceeds to step 42 below.

[0087] Step 42, Hot water circulation operation stage:

[0088] Step 421: Based on the flow status signal monitored in step 411, control the water pump to start operation and enter the hot water circulation operation stage;

[0089] Step 422, during hot water circulation operation: After the water pump enters the hot water circulation operation stage, it controls the flow of hot water throughout the closed-loop pipeline, such as... Figure 4 As shown, the water flow rate through the pump is F2 at this time, so the water temperature at the pump will continue to rise.

[0090] Step 423, the hot water circulation operation phase ends;

[0091] Step 4231: Obtain the water temperature signal during the hot water circulation operation phase of the water pump; obtain, for example... Figure 4 As shown, when the temperature signal detected by the temperature sensor, that is, the water temperature at the water pump reaches the first preset temperature T1, the water pump is controlled to end the hot water circulation stage, but the water pump will continue to run and proceed to the following step 43.

[0092] Step 4232: When the temperature signal detected by the temperature sensor, that is, the water temperature at the water pump is lower than the first preset temperature T1, control the water pump to end the hot water circulation stage and control the water pump to stop running.

[0093] Step 4233: When the water pump runs continuously in the hot water circulation stage for more than the second preset time t1, if the water temperature at the water pump is still not at the first preset temperature T1, control the water pump to end the hot water circulation stage and control the water pump to stop running.

[0094] Step 43, pressurization operation stage:

[0095] Step 431: When the temperature at the water pump during the hot water circulation stage reaches the first preset temperature T1, control the water pump to enter the pressurization operation stage.

[0096] Step 432, pressurization process: After the hot water circulation phase ends, a temperature signal is detected indicating that the water temperature at the pump has reached the first preset temperature T1. The pump continues to run, and the hot water continues to flow in the entire closed-loop pipeline. The water flow rate through the pump is F2. At this time, the user will start using hot water by turning on the tap. The water pressure at this time is the sum of the official water pressure and the water pressure generated by the pump. The water flow rate through the pump is F3 (higher than F1 or F2), thus achieving the pressurization effect. Due to the injection of cold water during this process, the water temperature at the pump will decrease.

[0097] Step 433: During the pressurization operation phase, when the water flow rate at the water pump is detected to return to F2, it indicates that the user has turned off the tap and only the water pump is running, resulting in hot water flow. At this time, the time the water flow rate is at F2 will be detected. If it is maintained for a continuous time t2, it is determined that the user no longer uses water, and the water pump is controlled to end the pressurization operation phase and directly stop running.

[0098] Step 434: When the duration of the pressurization operation phase exceeds the preset time threshold t3, control the water pump to end the pressurization operation phase and directly control the water pump to stop running.

[0099] The above embodiments of the present invention acquire the flow status signal of the water pump installed on the return water pipe of the water heater; control the water pump to enter the hot water circulation operation stage according to the flow status signal; acquire the water temperature signal of the water pump in the hot water circulation operation stage; and control the water pump to enter the pressurization operation stage according to the temperature signal. This can realize the integration of the water pump's thermal circulation function and pressurization function, which has a wider range of applications, more reliable control method, improves the operating efficiency of the water pump, and reduces manual handling costs.

[0100] Embodiments of the present invention also provide a control device 50 for operating a water pump, comprising:

[0101] The acquisition module 51 is used to acquire the flow status signal of the water pump installed on the return water pipe of the water heater, and to acquire the water temperature signal of the water pump during the hot water circulation operation phase.

[0102] The control module 52 is used to control the water pump to enter the hot water circulation operation stage according to the flow status signal; and to control the water pump to enter the pressurization operation stage according to the temperature signal.

[0103] Optionally, the acquisition module 52 is used to acquire the flow status signal of the water pump installed on the return water pipe of the water heater, including:

[0104] Based on the opening and closing status of the faucet installed on the water supply pipeline of the water heater within a first preset time period, the water pump obtains a first flow signal when the faucet is open and a second flow signal when the faucet is closed.

[0105] The flow status signal of the water pump is obtained based on the changes in the first flow signal and the second flow signal.

[0106] Optionally, the control module 52 is used to control the water pump to enter the hot water circulation operation stage according to the flow status signal, including:

[0107] When the flow status signal is a pulse signal with varying high and low values, the water pump is controlled to start;

[0108] During the second preset time period after the water pump is started, the water pump is controlled to enter the hot water circulation operation stage.

[0109] Optionally, during the hot water circulation phase of the water pump, the control module 52 is further configured to:

[0110] The water heater is controlled to heat the water in the water pump circulation pipe, and the heated water is controlled to flow in the water pump circulation pipe.

[0111] Optionally, the control module 52 is used to control the water pump to enter the pressurization operation stage according to the temperature signal, including:

[0112] When the temperature signal equals the first preset temperature and the tap is detected to be open, the water pump is controlled to enter the booster operation stage; otherwise, the water pump is controlled to stop running.

[0113] Optionally, during the pressurization phase of the water pump, the control module 52 is further configured to:

[0114] Obtain the water flow rate of the water pump during the booster operation phase;

[0115] The water pump is controlled to stop operating based on the water flow rate and / or the operating time threshold of the pressurization operation phase.

[0116] Optionally, the control module 52 is configured to control the water pump to stop operating based on the water flow rate and / or the operating time threshold of the pressurization phase, including:

[0117] When the water flow rate during the pressurization phase is the same as the water flow rate during the hot water circulation phase, the water pump is controlled to stop operating; and / or

[0118] When the duration of the pressurization phase exceeds a preset time threshold, the water pump is controlled to stop operating.

[0119] It should be noted that this device is a device corresponding to the above control method. All implementation methods in the above method embodiments are applicable to the embodiments of this device and can achieve the same technical effect.

[0120] like Figure 2 and Figure 3 As shown, embodiments of the present invention also provide a control system for the operation of a water pump, comprising:

[0121] A water pump is installed on the return water pipe of the water heater, and the two ends of the return water pipe are respectively connected to the cold water pipe and the hot water pipe of the heater;

[0122] A flow sensor is fixedly connected to one end of the water pump and placed in the return water pipe to monitor the flow status signal of the water pump.

[0123] A temperature sensor is fixedly connected to the other end of the water pump and placed in the return water pipe to monitor the water temperature signal during the hot water circulation operation of the water pump.

[0124] The controller is communicatively connected to the flow sensor and the temperature sensor, respectively, for acquiring the flow status signal of the water pump and controlling the water pump to enter the hot water circulation operation stage according to the flow status signal; acquiring the water temperature signal of the water pump in the hot water circulation operation stage; and controlling the water pump to enter the pressurization operation stage according to the temperature signal.

[0125] Furthermore, the control system for the operation of the water pump also includes:

[0126] A water heater, which is communicatively connected to the controller, heats the water in the water pump circulation pipeline during the hot water circulation phase of the water pump, based on the flow status signal.

[0127] In this embodiment, a temperature sensor is set up to monitor the temperature of the hot water at the water pump in real time when the water pump is in the hot water circulation operation stage, and use it as a water temperature signal; then, based on the temperature signal, the water pump is controlled to end the hot water circulation operation stage and to enter the pressurization operation stage, so as to realize the integration of water pump thermal circulation and pressurization functions.

[0128] Simultaneously, based on the flow status signal and temperature signal, the water pump is precisely controlled to switch from the start-up operation stage to the thermal circulation operation stage and then to the pressurization operation stage, thereby improving the working efficiency of the water pump and reducing energy consumption and manual operation costs.

[0129] The above description represents the preferred embodiments of the present invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A control method of a water pump operation, characterized by, The method comprises the following steps: acquiring a flow state signal of a water pump installed on a return water pipeline of a water heater; controlling the water pump to enter a hot water circulation operation stage according to the flow state signal; acquiring a water temperature signal of the water pump in the hot water circulation operation stage; controlling the water pump to enter a pressure boosting operation stage according to the temperature signal; wherein the acquiring of the flow state signal of the water pump installed on the return water pipeline of the water heater comprises: obtaining a first flow signal of the water pump when a faucet installed on a water supply pipeline of the water heater is in an open state and a second flow signal when the faucet is in a closed state according to the opening and closing states of the faucet within a first preset time period; obtaining the flow state signal of the water pump according to the changes of the first flow signal and the second flow signal; the first flow signal represents a first water flow value at the water pump when the faucet installed on the water supply pipeline of the water heater is in the open state under the shutdown state of the water pump; the second flow signal represents a second water flow value at the water pump when the faucet installed on the water supply pipeline of the water heater is in the closed state under the shutdown state of the water pump; the first water flow value is greater than the second water flow value; the opening and closing of the faucet is a complete cycle of the water flow change at the water pump when the water pump is in the shutdown state; the first flow signal and the second flow signal are obtained within a complete cycle of the water flow change at the water pump within the first preset time period; wherein the controlling of the water pump to enter the hot water circulation operation stage according to the flow state signal comprises: controlling the water pump to start when the flow state signal is a high-low change pulse signal; controlling the water pump to enter the hot water circulation operation stage within a second preset time period after the water pump starts; wherein the water pump in the hot water circulation operation stage further comprises: controlling the water heater to heat the water in a water pump circulation pipeline and control the heated water to flow in the water pump circulation pipeline; the water pump circulation pipeline comprises a cold water pipeline, a hot water pipeline and a return water pipeline; when the water pump enters the hot water circulation operation stage, the water heater heats the water in the hot water pipeline in the water pump circulation pipeline, and controls the water pump to continue to operate, so as to promote the heated water to flow in the water pump circulation pipeline; and the flow sensor and the temperature sensor are used to monitor the water flow and the water temperature at the water pump in real time during the process.

2. The control method of a water pump operation according to claim 1, characterized by, the controlling of the water pump to enter the pressure boosting operation stage according to the temperature signal comprises: controlling the water pump to enter the pressure boosting operation stage when the temperature signal is equal to a first preset temperature and the faucet is in an open state; otherwise, controlling the water pump to stop operating.

3. The control method of a water pump operation according to claim 2, characterized by, the water pump in the pressure boosting operation stage further comprises: acquiring a water flow of the water pump in the pressure boosting operation stage; controlling the water pump to stop operating according to the water flow in the pressure boosting operation stage and / or a running time threshold value of the pressure boosting operation stage.

4. The control method of a water pump operation according to claim 3, characterized by, the controlling of the water pump to stop operating according to the water flow in the pressure boosting operation stage and / or the running time threshold value of the pressure boosting operation stage comprises: controlling the water pump to stop running when the water flow of the pressurization running phase is the same as the water flow of the hot water circulation running phase; and / or controlling the water pump to stop running when the running time of the pressurization running phase is greater than a preset time threshold.

5. A control device for a water pump operation, characterized by comprising: an acquisition module, configured to acquire a flow state signal of a water pump installed on a backwater pipeline of a water heater and acquire a temperature signal of water of the water pump in a hot water circulation running phase; wherein the acquisition of the flow state signal of the water pump installed on the backwater pipeline of the water heater comprises: obtaining a first flow signal of the water pump when a water faucet installed on a water supply pipeline of the water heater is in an open state and a second flow signal when the water faucet is in a closed state according to the open and closed states of the water faucet in a first preset time period; obtaining the flow state signal of the water pump according to the changes of the first flow signal and the second flow signal; the first flow signal represents a first water flow value at the water pump when the water faucet installed on the water supply pipeline of the water heater is in the open state in a shutdown state of the water pump; the second flow signal represents a second water flow value at the water pump when the water faucet installed on the water supply pipeline of the water heater is in the closed state in the shutdown state of the water pump; the first water flow value is greater than the second water flow value; the opening and closing of the water faucet is a complete cycle of water flow change at the water pump when the water pump is in the shutdown state; the first flow signal and the second flow signal are acquired in a complete cycle of water flow change at the water pump in the first preset time period; a control module, configured to control the water pump to enter the hot water circulation running phase according to the flow state signal and control the water pump to enter a pressurization running phase according to the temperature signal; wherein the control of the water pump to enter the hot water circulation running phase according to the flow state signal comprises: controlling the water pump to start when the flow state signal is a high-low change pulse signal; controlling the water pump to enter the hot water circulation running phase in a second preset time period after the water pump starts; wherein the water pump during the hot water circulation running phase further comprises: controlling the water heater to heat the water in a water pump circulation pipeline and control the heated water to flow in the water pump circulation pipeline; the water pump circulation pipeline comprises: a cold water pipe, a hot water pipe and a backwater pipe; when the water pump enters the hot water circulation running phase, the water heater heats the water in the hot water pipe in the water pump circulation pipeline at this time, and the water pump continues to run to promote the heated water to flow in the water pump circulation pipeline; and the flow sensor and the temperature sensor are used to monitor the water flow and the temperature of the water at the water pump in real time.

6. A control system for the operation of a water pump, characterized in that comprising: a water pump, installed on a backwater pipeline of a water heater, two ends of the backwater pipeline being in communication with a cold water pipe and a hot water pipe of a heater respectively; a flow sensor, fixedly connected with one end of the water pump and placed in the backwater pipeline, used to monitor a flow state signal of the water pump; A temperature sensor is fixedly connected with the other end of the water pump and placed in the return pipe for monitoring the temperature signal of the water of the water pump in the hot water circulation operation stage; A controller is in communication with the flow sensor and the temperature sensor for obtaining the flow state signal of the water pump, controlling the water pump to enter the hot water circulation operation stage according to the flow state signal, obtaining the temperature signal of the water of the water pump in the hot water circulation operation stage, and controlling the water pump to enter the pressure boosting operation stage according to the temperature signal. The flow state signal of the water pump is obtained by obtaining the first flow signal when the water pump is in the state that the water faucet installed on the water supply pipeline of the water heater is opened and the second flow signal when the water faucet is closed within a first preset time period, and obtaining the flow state signal of the water pump according to the changes of the first flow signal and the second flow signal. The first flow signal represents the first water flow value at the water pump when the water faucet installed on the water supply pipeline of the water heater is opened in the shutdown state of the water pump. The second flow signal represents the second water flow value at the water pump when the water faucet installed on the water supply pipeline of the water heater is closed in the shutdown state of the water pump. The first water flow value is greater than the second water flow value. The opening and closing of the water faucet is a complete cycle of the water flow change at the water pump when the water pump is in the shutdown state. Within the first preset time period, the first flow signal and the second flow signal in a complete cycle of the water flow change at the water pump are obtained. According to the flow state signal, the water pump is controlled to enter the hot water circulation operation stage by controlling the water pump to start when the flow state signal is a high-low change pulse signal, and controlling the water pump to enter the hot water circulation operation stage within a second preset time period after the water pump starts. In the hot water circulation operation stage, the water heater heats the water in the water pump circulation pipeline and controls the heated water to flow in the water pump circulation pipeline. The water pump circulation pipeline includes a cold water pipe, a hot water pipe and a return pipe. When the water pump enters the hot water circulation operation stage, the water heater heats the water in the hot water pipe of the water pump circulation pipeline, and the water pump continues to operate to promote the heated water to flow in the water pump circulation pipeline. The flow sensor and the temperature sensor are used to monitor the water flow and the water temperature at the water pump in real time.

7. The control system for water pump operation according to claim 6, wherein The water heater is in communication with the controller and heats the water in the water pump circulation pipeline during the hot water circulation operation stage of the water pump according to the flow state signal. ​

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