A sensorless automatic start-stop boosting method, system and pump

Abstract

This application relates to a sensorless automatic start-stop boosting method, system, and pump, and relates to the technical field of boosting pumps. The method comprises the following steps: a judgment step, in which the user's intention is judged; if water is needed, a standby step is executed; and a standby step, in which the motor of the boosting pump is controlled to maintain a speed V1. This application has the advantage of a good initial user experience.

Description

Technical Field

[0001] The present application relates to the technical field of booster pumps, and in particular to a sensorless automatic start-stop boosting method, system, and pump. Background Art

[0002] Existing booster pumps that can start and stop automatically usually require a flow sensor or a pressure sensor to retrieve the flow or pressure changes of the system in order to achieve the automatic start and stop function; the existing booster pumps will only start when there are flow fluctuations or pressure fluctuations, and the initial experience of use is poor. Summary of the Invention

[0003] In view of the shortcomings of the existing technology, one of the purposes of this application is to provide a non-sensing automatic start-stop boosting method, system and pump, which have the advantage of a better initial use experience.

[0004] The above-mentioned purpose of this application is achieved through the following technical solutions:

[0005] A sensorless automatic start-stop boosting method includes the following steps: a judgment step of judging the use intention, and if there is a need for water, executing a standby step; and a standby step of controlling the motor of the boosting pump to maintain a speed V1.

[0006] In a preferred example, the present application can be further configured as follows: it also includes a boosting step and a pressure reduction step. In the boosting step, the actual flow rate is obtained by calculation, and it is determined whether the actual flow rate is greater than the first adjustment threshold. If it is greater, the motor speed of the boosting pump is changed to V2; in the pressure reduction step: it is determined whether the actual flow rate is less than the second adjustment threshold. If it is less, the motor speed of the boosting pump is changed to V1.

[0007] In a preferred example, the present application can be further configured as follows: it also includes a learning step, in which the valve, flow and motor rotation of the booster pump are in working state one, and then the valve and flow are adjusted to working state two, the operating state parameters are recorded, and the flow threshold at this time is adjusted to the adjustment threshold.

[0008] In a preferred example, the present application can be further configured as follows: the adjustment threshold includes a first adjustment threshold, and the first adjustment threshold is calibrated: the valve and flow are fully opened, and the motor of the boost pump runs at the rated speed; then the valve is reduced to reduce the flow to the state where the boost function needs to be turned off, the operating status parameters are recorded, and the flow threshold at this time is adjusted to the first adjustment threshold; after the threshold learning is completed, the speed is automatically reduced to speed V1.

[0009] In a preferred example, the present application can be further configured as follows: the adjustment threshold includes a second adjustment threshold, and the second adjustment threshold is calibrated: the valve and flow are fully opened, and the motor of the boost pump runs at the rated speed; then the valve is reduced to reduce the flow to the state where the boost function needs to be turned off, the operating status parameters are recorded, and the flow threshold at this time is adjusted to the second adjustment threshold; after the threshold learning is completed, the speed is automatically reduced to speed V1.

[0010] The present application also discloses a sensorless automatic start-stop boosting system, which adopts the above-mentioned sensorless automatic start-stop boosting method, including a judgment module and a standby module. The judgment module judges the intention of use. If there is a need for water, the standby module is started. The standby module controls the motor of the boosting pump to maintain a speed of V1.

[0011] In a preferred example, the present application can be further configured as follows: it also includes a boost module and a pressure reduction module, the judgment module determines whether the actual flow rate is greater than the first adjustment threshold, if it is greater, the boost module is started, and the motor speed of the boost pump is changed to V2; the judgment module determines whether the actual flow rate is less than the second adjustment threshold, if it is less, the pressure reduction module is started, and the motor speed of the boost pump is changed to V1.

[0012] In a preferred example, the present application can be further configured as follows: it also includes a learning module, which makes the valve, flow and booster pump motor rotate in working state one, and then adjusts the valve and flow to working state two. The learning module records the operating state parameters and adjusts the flow threshold at this time to the adjustment threshold.

[0013] The present application also discloses a sensorless automatic start-stop booster pump, which is characterized by comprising the above-mentioned sensorless automatic start-stop boosting method or the above-mentioned sensorless automatic start-stop boosting system.

[0014] The present application has the following advantages: the water pump is turned off during the non-water-using stage, thereby achieving energy saving and environmental protection; when water is needed, it can be turned on to the standby state in advance to improve the user experience, and the user can set the first adjustment threshold and the second adjustment threshold by himself to make the use more in line with the user's usage habits. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the performance curve of this application. DETAILED DESCRIPTION

[0016] The present application is further described in detail below with reference to the accompanying drawings.

[0017] Reference Figure 1 , a sensorless automatic start-stop supercharging method disclosed in this application, comprising the following steps:

[0018] The judgment step judges the usage intention and executes the standby step if there is a need for water;

[0019] In the standby step, the motor of the booster pump is controlled to maintain a speed of V1;

[0020] In the boosting step, it is determined whether the actual flow rate is greater than the first adjustment threshold. If so, the motor speed of the boosting pump is changed to V2;

[0021] Pressure reduction step: determine whether the actual flow rate is less than the second adjustment threshold. If so, the motor speed of the booster pump becomes V1;

[0022] Learning steps, learning steps, make the valve, flow and booster pump motor rotate in working state one, then adjust the valve and flow to working state two, record the operating state parameters, and adjust the flow threshold at this time to the adjustment threshold;

[0023] The adjustment threshold includes a first adjustment threshold. To calibrate the first adjustment threshold, reduce the speed to the lowest operating speed V1 (working state 1), adjust and increase the valve to increase the flow rate to the state where the boost function needs to be turned on (working state 2), record the operating state parameters, and adjust the flow threshold at this time to the first adjustment threshold. After the threshold learning is completed, the speed is automatically increased to speed V2.

[0024] The adjustment threshold includes a second adjustment threshold. The second adjustment threshold is calibrated as follows: the valve and flow are fully opened, and the motor of the booster pump runs at the rated speed (working state one); then the valve is reduced to reduce the flow to the state where the boost function needs to be turned off (working state two), the operating state parameters are recorded, and the flow threshold at this time is adjusted to the second adjustment threshold; after the threshold learning is completed, the speed is automatically reduced to speed V1.

[0025] In this application, the actual flow rate is obtained by calculation, such as the method used in the patent application with publication number CN118960914B applied by our company.

[0026] The present application also discloses a sensorless automatic start-stop boosting system, which adopts the above-mentioned sensorless automatic start-stop boosting method, including a judgment module, a standby module, a boosting module, a pressure reduction module and a learning module. The judgment module: judges the intention of use, and if there is a need for water, starts the standby module; the standby module; controls the motor of the boosting pump to maintain a speed of V1.

[0027] The judgment module determines whether the actual flow rate is greater than the first adjustment threshold. If so, the boost module is started and the motor speed of the boost pump is changed to V2; the judgment module determines whether the actual flow rate is less than the second adjustment threshold. If so, the pressure reduction module is started and the motor speed of the boost pump is changed to V1.

[0028] The valve, flow and booster pump motor are put into working state one, and then the valve and flow are adjusted to working state two. The learning module records the operating state parameters and adjusts the flow threshold at this time to the adjustment threshold.

[0029] In this application, the usage intention includes but is not limited to one or more of the user's water use history data, water use habits, and whether the user is close to the valve obtained by the sensor.

[0030] The present application also discloses a sensorless automatic start-stop booster pump, which is characterized by comprising the above-mentioned sensorless automatic start-stop boosting method or the above-mentioned sensorless automatic start-stop boosting system.

[0031] Reference Figure 1 Among them, Ka is the water resistance curve when the valve is fully closed, Kb is the water resistance curve when the valve opening is B, Kc is the water resistance curve when the valve opening is C, Kd is the water resistance curve when the valve is fully open, Q1 is the performance curve of the water pump when it is in standby mode (minimum speed V1), Q2 is the rated performance curve of the water pump (rated speed V2), Qb1, Qc1, and Qd1 are the flow rates at different valve openings when the water pump is in standby mode, and Qb2, Qc2, and Qd2 are the flow rates at different valve openings when the water pump is pressurized.

[0032] The judgment module has built-in flow curve Q1 and corresponding power curve P1 in standby state, flow curve Q2 and corresponding power curve P2 in running state. The standby state corresponds to the minimum running speed V1, and the running state corresponds to the rated speed V2;

[0033] When the booster pump opens the valve in standby mode (i.e., the user uses water), since the speed V1 is maintained in the standby mode, when the valve is opened, the power increases and the actual flow rate changes. When the actual flow rate exceeds the threshold value (first adjustment threshold value) corresponding to the flow curve Q1, the booster pump switches to the running state, such as Figure 1 As shown, let the valve opening degree during the valve opening process be c, and the corresponding water resistance curve be K c , then the corresponding actual flow Q c >Q c1 , at this time Q c1 is the first adjustment threshold; on the contrary, when the booster pump closes the valve in the running state, the valve opening during the valve closing process is b. Since the speed V2 is maintained in the running state, the power decreases when the valve is closed. When the flow rate is lower than the threshold (second adjustment threshold) corresponding to the flow curve Q2, the corresponding actual flow rate Q b <Q b2 , at this time Q b2 is the second adjustment threshold, the booster pump switches to the standby state; the valve opening b≤c;

[0034] The actual flow rate change can be obtained by the change of operating parameters such as power, current, and speed. The method of judging the flow rate by parameters can be obtained by the method adopted in the patent application number CN118960914B applied by our company.

[0035] The standby state can limit the speed to a low level to ensure low standby power; by setting the Q1 curve, when the standby state is running, if the user valve is opened slightly and the flow rate does not reach the first adjustment threshold, the minimum operating speed V1 will be kept unchanged;

[0036] The above settings can realize the function of automatic start and stop of the booster pump without sensors (flow / pressure sensors, etc.); maintaining the lowest operating speed in the standby state can enable the water supply system where the booster pump is located to maintain low power consumption operation and be able to realize automatic start and stop at any time.

[0037] Furthermore, in order to improve the matching degree between the booster pump system and the user, the first adjustment threshold and the second adjustment threshold are learned and calibrated to meet the user's water usage habits;

[0038] The details are as follows: ① Data collection: After the booster pump system is installed, record the user's water consumption data in combination with time parameters;

[0039] ②Learn and calibrate the first adjustment threshold: reduce the speed to the lowest operating speed V1, adjust and enlarge the valve to increase the flow rate to the state where the boost function needs to be turned on, press the learning key, record the operating status parameters, and adjust the flow threshold at this time to the first adjustment threshold; after the threshold learning is completed, the speed will automatically increase to the rated speed V2;

[0040] ③Learn and calibrate the second adjustment threshold: fully open the valve and flow, and run the pump at the rated speed; then reduce the valve to reduce the flow to the state where the boost function needs to be turned off, press the learning key, record the operating status parameters, and adjust the flow threshold at this time to the second adjustment threshold; after the threshold learning is completed, the speed is automatically reduced to the minimum speed V1.

[0041] After completing the calibration through the above steps, the following functions are achieved:

[0042] When running at rated speed, if the actual flow rate is less than the calibrated second adjustment threshold, no boost is required and the water pump runs at the lowest speed V1;

[0043] When running at the lowest speed, when the actual flow rate is greater than the calibrated first adjustment threshold, boosting is required and the water pump runs at the rated speed V2.

[0044] After the water pump is installed, the user's water use habits can be collected based on the user's water use history data and recorded in the water pump as time parameters. Therefore, the water pump can be shut down during the non-water use stage, thereby achieving energy saving and environmental protection; when water is needed, it can be turned on to standby mode in advance to improve user experience.

[0045] The implementation principle of this embodiment is: the water pump is turned off during the non-water stage, thereby achieving energy saving and environmental protection; when water is needed, it can be turned on to the standby state in advance to improve the user experience. The user can set the first adjustment threshold and the second adjustment threshold by himself to make the use more in line with the user's usage habits.

[0046] The embodiments of this specific implementation method are all preferred embodiments of the present application and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A sensorless automatic start-stop supercharging method, characterized by: The method includes the following steps: a judgment step: judging the use intention, and if there is a need for water, executing a standby step; a standby step: controlling the motor of the booster pump to maintain a speed of V1; and further including a boosting step and a pressure reducing step. The boosting step: obtaining the actual flow rate by calculation, judging whether the actual flow rate is greater than a first adjustment threshold, and if so, changing the motor speed of the booster pump to V2; Blood pressure reduction Step: Determine whether the actual flow rate is less than the second adjustment threshold. If so, the motor speed of the boost pump becomes V1, the first adjustment threshold is greater than the second adjustment threshold, and the operating state corresponds to the rated speed V2.

2. The sensorless automatic start-stop supercharging method according to claim 1, characterized in that: The method further includes a learning step, which includes setting the valve, flow and motor of the booster pump to working state one, then adjusting the valve and flow to working state two, recording the operating state parameters, and adjusting the flow threshold at this time to the adjustment threshold.

3. The sensorless automatic start-stop supercharging method according to claim 2, characterized in that: The adjustment threshold includes a first adjustment threshold. The first adjustment threshold is calibrated by reducing the speed to the lowest operating speed V1, adjusting and enlarging the valve to increase the flow rate to the state where the boost function needs to be turned on, recording the operating status parameters, and adjusting the flow threshold at this time to the first adjustment threshold; after the threshold learning is completed, the speed is automatically increased to the speed V2.

4. The sensorless automatic start-stop supercharging method according to claim 2, characterized in that: The adjustment threshold includes a second adjustment threshold. The second adjustment threshold is calibrated as follows: the valve and flow are fully opened, and the motor of the booster pump runs at the rated speed; then the valve is reduced to reduce the flow to the state where the boost function needs to be turned off, the operating status parameters are recorded, and the flow threshold at this time is adjusted to the second adjustment threshold; after the threshold learning is completed, the speed is automatically reduced to speed V1.

5. A sensorless automatic start-stop supercharging system, using a sensorless automatic start-stop supercharging method according to any one of claims 1 to 4, characterized in that: It includes a judgment module and a standby module. The judgment module judges the usage intention. If there is a need for water, the standby module is started. The standby module controls the motor of the booster pump to maintain a speed of V1.

6. The sensorless automatic start-stop supercharging system according to claim 5, characterized in that: It also includes a boost module and a pressure reduction module. The judgment module determines whether the actual flow rate is greater than the first adjustment threshold. If it is, the boost module is started and the motor speed of the boost pump is changed to V2; the judgment module determines whether the actual flow rate is less than the second adjustment threshold. If it is, the pressure reduction module is started and the motor speed of the boost pump is changed to V1.

7. The sensorless automatic start-stop supercharging system according to claim 5, characterized in that: It also includes a learning module, which makes the valve, flow and booster pump motor rotate in working state one, and then adjusts the valve and flow to working state two. The learning module records the operating state parameters and adjusts the flow threshold at this time to the adjustment threshold.

8. A non-sensing automatic start-stop booster pump, characterized by: It includes a sensorless automatic start-stop supercharging method as described in any one of claims 1-4 or a sensorless automatic start-stop supercharging system as described in any one of claims 5-7.

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