Non-inductive automatic start-stop pressurization method, system and pump

Abstract

The invention relates to a non-inductive automatic starting and stopping pressurization method and system and a pump, and relates to the technical field of booster pumps, and the non-inductive automatic starting and stopping pressurization method comprises the following steps: a judgment step: judging a use intention, if water needs to be used, executing a standby step, and a standby step: controlling a motor of the booster pump to keep the rotating speed V1. The method has the advantage of being good in experience in the initial stage of use.

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 is a flow fluctuation or pressure fluctuation, and the experience is poor in the initial use. Summary of the invention

[0003] In view of the deficiencies in the prior art, one of the purposes of the present application is to provide a sensorless automatic start-stop boosting method, system and pump, which have the advantage of a better initial use experience.

[0004] The above-mentioned purpose of the present application is achieved through the following technical solutions: A non-sensing automatic start-stop boosting method comprises the following steps: a judging step, judging the use intention, and executing a standby step if there is a need for water; and a standby step, controlling the motor of the boosting pump to maintain a speed V1.

[0005] In a preferred example, the present application can be further configured as follows: it also includes a boosting step and a pressure reducing 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 reducing 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.

[0006] 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.

[0007] 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 state 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 the speed V1.

[0008] In a preferred example, the present application can be further configured as follows: The adjustment threshold includes a second adjustment threshold. Calibrate the second adjustment threshold: fully open the valve and the flow rate, and operate the motor of the booster pump at the rated speed; then reduce the valve to lower the flow rate to the state when the booster function needs to be turned off, record the operating state parameters, and adjust the flow threshold at this time to the second adjustment threshold; after the threshold learning is completed, automatically reduce the speed to speed V1.

[0009] The present application also discloses a sensorless automatic start-stop boosting system, which adopts the above-mentioned sensorless automatic start-stop boosting method, and includes a judgment module and a standby module. The judgment module: judges the usage intention. If there is a need for water use, start the standby module, and the standby module controls the motor of the booster pump to maintain the speed V1.

[0010] In a preferred example, the present application can be further configured as follows: It further includes a boosting module and a pressure reducing module. The judgment module judges whether the actual flow rate is greater than the first adjustment threshold. If it is greater, start the boosting module, and the motor speed of the booster pump becomes V2; the judgment module judges whether the actual flow rate is less than the second adjustment threshold. If it is less, start the pressure reducing module, and the motor speed of the booster pump becomes V1.

[0011] In a preferred example, the present application can be further configured as follows: It further includes a learning module. Make the valve, the flow rate, and the rotation of the motor of the booster pump in working state one, and then adjust the valve and the flow rate to working state two. The learning module records the operating state parameters and adjusts the flow threshold at this time to the adjustment threshold.

[0012] The present application also discloses a sensorless automatic start-stop booster pump, which is characterized in that it includes the above-mentioned sensorless automatic start-stop boosting method or the above-mentioned sensorless automatic start-stop boosting system.

[0013] The present application has the following advantages: Shut down the water pump during the stage without water use, so as to achieve energy conservation and environmental protection; it can be turned on to the standby state in advance during the stage when water is needed to improve the user experience. The user can set the first adjustment threshold and the second adjustment threshold by himself, so that the use is more in line with the user's usage habits. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the performance curve of the present application. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0015] The following further describes the present application in detail with reference to the accompanying drawings.

[0016] Refer to Figure 1 , a sensorless automatic start-stop boosting method disclosed in the present application, includes the following steps. The judgment step: judge the usage intention. If there is a need for water use, execute the standby step; Standby step, controlling the motor of the booster pump to maintain the rotational speed V1; Boosting step, determining whether the actual flow rate is greater than the first adjustment threshold. If it is greater, the rotational speed of the motor of the booster pump becomes V2; Pressure reduction step: determining whether the actual flow rate is less than the second adjustment threshold. If it is less, the rotational speed of the motor of the booster pump becomes V1; Learning step, the learning step, enabling the valve, flow rate, and the motor of the booster pump to rotate in working state one. Subsequently, adjusting the valve and flow rate to working state two, recording the operating state parameters, and adjusting the flow rate threshold at this time to the adjustment threshold; The adjustment threshold includes the first adjustment threshold. Calibrating the first adjustment threshold: reducing the rotational speed to the lowest operating rotational speed V1 (working state one), adjusting and increasing the valve to make the flow rate rise to the state when the boosting function needs to be turned on (working state two), recording the operating state parameters, and adjusting the flow rate threshold at this time to the first adjustment threshold; after the threshold learning is completed, automatically increasing the rotational speed to rotational speed V2; The adjustment threshold includes the second adjustment threshold. Calibrating the second adjustment threshold: fully opening the valve and flow rate, operating the motor of the booster pump at the rated rotational speed (working state one); subsequently, reducing the valve to make the flow rate decrease to the state when the boosting function needs to be turned off (working state two), recording the operating state parameters, and adjusting the flow rate threshold at this time to the second adjustment threshold; after the threshold learning is completed, automatically reducing the rotational speed to rotational speed V1.

[0017] In the present application, the actual flow rate is obtained through calculation, such as the method adopted in the patent with the publication number CN118960914B applied by our company.

[0018] The present application also discloses a sensorless automatic start-stop boosting system, adopting 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: judging the usage intention. If there is a water usage requirement, starting the standby module, and the standby module; controlling the motor of the booster pump to maintain the rotational speed V1.

[0019] The judgment module judges whether the actual flow rate is greater than the first adjustment threshold. If it is greater, starting the boosting module, and the rotational speed of the motor of the booster pump becomes V2; the judgment module judges whether the actual flow rate is less than the second adjustment threshold. If it is less, starting the pressure reduction module, and the rotational speed of the motor of the booster pump becomes V1.

[0020] Enabling the valve, flow rate, and the motor of the booster pump to rotate in working state one. Subsequently, adjusting the valve and flow rate to working state two, and the learning module records the operating state parameters, and adjusts the flow rate threshold at this time to the adjustment threshold.

[0021] In this application, the usage intention includes, but is not limited to, one or more of the user's water usage historical data, water usage habits, whether the user is close to the valve as obtained by the sensor, etc.

[0022] This application also discloses a touchless automatic start-stop booster pump, which is characterized by including the above touchless automatic start-stop boosting method or the above touchless automatic start-stop boosting system.

[0023] Refer to Figure 1 , where 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 in the standby state (the lowest speed V1), Q2 is the rated performance curve of the water pump (the rated speed V2), Qb1, Qc1, and Qd1 are the flow values at different valve openings of the water pump in the standby state, and Qb2, Qc2, and Qd2 are the flow values at different valve openings of the water pump during boosting.

[0024] The judgment module is built-in with the flow curve Q1 and the corresponding power curve P1 in the standby state, the flow curve Q2 and the corresponding power curve P2 in the running state. In the standby state, it corresponds to the lowest operating speed V1, and in the running state, it corresponds to the rated speed V2; When the booster pump opens the valve in the standby state (i.e., the user uses water), since the speed V1 is maintained in the standby state, when the valve is opened, the power increases and the actual flow rate will change. When the actual flow rate exceeds the threshold value (the first adjustment threshold) corresponding to the flow curve Q1, the booster pump switches to the running state, as Figure 1 shown. Let the valve opening be c during the valve opening process, and the corresponding water resistance curve be K c , then the corresponding actual flow rate Q c > Q c1 , and at this time, Q c1 is the first adjustment threshold; conversely, when the booster pump closes the valve in the running state, as the valve opening is b during the valve closing process, 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 value (the second adjustment threshold) corresponding to the flow curve Q2, that is, the corresponding actual flow rate Q b < Q b2 , and at this time, Q b2 is the second adjustment threshold, then the booster pump switches to the standby state; the valve opening b ≤ c; The change in the actual flow rate can be obtained through the change in operating parameters such as power, current, and speed; the method of judging the flow rate through parameters can be obtained by the method adopted in the patent with the publication number CN118960914B applied by our company; The rotational speed can be limited to a low level in the standby state to ensure low power consumption during standby. By setting the Q1 curve, when the user valve is slightly opened and the flow rate does not reach the first adjustment threshold during standby operation, the lowest operating speed V1 remains unchanged. Through the above settings, the function of automatically starting and stopping the booster pump without sensors (such as flow / pressure sensors) can be achieved. Maintaining the lowest operating rotational speed in the standby state enables the water supply system where the booster pump is located to operate with low power consumption and be able to start and stop automatically at any time.

[0025] Furthermore, to improve the matching degree between the booster pump system and users, the first adjustment threshold and the second adjustment threshold are learned and calibrated to meet the water usage habits of users. Specifically as follows: ① Data collection: After the installation of the booster pump system, according to the water usage data of users, combined with time parameters for recording. ② Learning and calibrating the first adjustment threshold: Reduce the rotational speed to the lowest operating speed V1, adjust and increase the valve to make the flow rate rise to the state when the booster function needs to be turned on, press the learning key, record the operating state parameters, and adjust the flow rate threshold at this time to the first adjustment threshold. After the threshold learning is completed, automatically increase the rotational speed to the rated speed V2. ③ Learning and calibrating the second adjustment threshold: Keep the valve and the flow rate fully open, and the water pump operates at the rated rotational speed. Then reduce the valve to make the flow rate decrease to the state when the booster function needs to be turned off, press the learning key, record the operating state parameters, and adjust the flow rate threshold at this time to the second adjustment threshold. After the threshold learning is completed, automatically reduce the rotational speed to the lowest speed V1.

[0026] After calibration is completed through the above steps, the following functions are achieved: When operating at the rated rotational speed state, when the actual flow rate < the calibrated second adjustment threshold, no boosting is required, and the water pump operates at the lowest rotational speed V1. When operating at the lowest rotational speed, when the actual flow rate > the calibrated first adjustment threshold, boosting is required, and the water pump operates at the rated rotational speed V2.

[0027] After the water pump is installed, according to the historical water usage data of users, the water usage habits can be collected and recorded in the water pump with time parameters. Therefore, when there is no water usage stage, the water pump is shut down to achieve energy conservation and environmental protection; when water usage is required, it can be turned on to the standby state in advance to improve the user experience.

[0028] The implementation principle of this embodiment is: When there is no water usage stage, the water pump is shut down to achieve energy conservation and environmental protection; when water usage is required, it can be turned on to the standby state in advance to improve the user experience. Users can set the first adjustment threshold and the second adjustment threshold by themselves to make the use more in line with the usage habits of users.

[0029] The embodiments of this specific implementation manner are all preferred embodiments of this application, and do not limit the protection scope of this application. Therefore, all equivalent changes made according to the structure, shape, and principle of this application shall be covered within the protection scope of this application.

Claims

1. A method for induction automatic start-stop supercharging, characterized in that: It includes the following steps: a judgment step to judge the usage intention. When there is a water usage requirement, the standby step is executed. In the standby step, the motor of the booster pump is controlled to maintain a rotational speed of V1.

2. The automatic start-stop supercharging method without induction according to claim 1, wherein: It also includes a boosting step and a pressure reduction step. In the boosting step, the actual flow rate is calculated, and it is judged whether the actual flow rate is greater than the first adjustment threshold. If it is greater, the rotational speed of the motor of the booster pump becomes V2. In the pressure reduction step: it is judged whether the actual flow rate is less than the second adjustment threshold. If it is less, the rotational speed of the motor of the booster pump becomes V1.

3. The induction-free automatic start-stop supercharging method according to claim 1 or 2, characterized in that: It also includes a learning step. In the learning step, the valve, the flow rate, and the motor of the booster pump are rotated to be in working state 1. Subsequently, the valve and the flow rate are adjusted to working state 2, and the operating state parameters are recorded. The flow rate threshold at this time is adjusted to the adjustment threshold.

4. The induction-free automatic start-stop supercharging method according to claim 3, characterized in that: The adjustment threshold includes the first adjustment threshold. Calibrate the first adjustment threshold: reduce the rotational speed to the lowest operating rotational speed V1, adjust and increase the valve to make the flow rate rise to the state when the boosting function needs to be turned on, record the operating state parameters, and adjust the flow rate threshold at this time to the first adjustment threshold. After the threshold learning is completed, the rotational speed is automatically increased to rotational speed V2.

5. The automatic start-stop supercharging method without induction according to claim 3, characterized in that: The adjustment threshold includes the second adjustment threshold. Calibrate the second adjustment threshold: fully open the valve and the flow rate, and the motor of the booster pump operates at the rated rotational speed; subsequently, reduce the valve to make the flow rate decrease to the state when the boosting function needs to be turned off, record the operating state parameters, and adjust the flow rate threshold at this time to the second adjustment threshold. After the threshold learning is completed, the rotational speed is automatically reduced to rotational speed V1.

6. An inductionless automatic start-stop supercharging system, adopting an inductionless automatic start-stop supercharging method according to any one of claims 1-5, characterized in that: It includes a judgment module and a standby module. The judgment module: judges the usage intention. When there is a water usage requirement, the standby module is started. The standby module: controls the motor of the booster pump to maintain a rotational speed of V1.

7. An induction-free automatic start-stop supercharging system according to claim 6, characterized in that: It also includes a boosting module and a pressure reduction module. The judgment module judges whether the actual flow rate is greater than the first adjustment threshold. If it is greater, the boosting module is started, and the rotational speed of the motor of the booster pump becomes V2. The judgment module judges whether the actual flow rate is less than the second adjustment threshold. If it is less, the pressure reduction module is started, and the rotational speed of the motor of the booster pump becomes V1.

8. The automatic start-stop supercharging system without induction according to claim 6, characterized in that: It also includes a learning module. The valve, the flow rate, and the motor of the booster pump are rotated to be in working state 1. Subsequently, the valve and the flow rate are adjusted to working state 2. The learning module records the operating state parameters, and the flow rate threshold at this time is adjusted to the adjustment threshold.

9. A non-sensing automatic start-stop booster pump, characterized in that: It includes a non-sensing automatic start-stop boosting method as described in any one of claims 1 - 5 or a non-sensing automatic start-stop boosting system as described in any one of claims 6 - 8.

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