Water pump capable of controlling water outlet flow through pressure

Abstract

The utility model discloses a water pump capable of controlling water outlet flow through pressure, which comprises a body provided with a water inlet, a cavity and a water outlet. A cavity is formed in the body, a motor is arranged on one side of the body, an impeller of the motor extends into the cavity, the pressure sensor can collect pressure in the water pump, the pressure sensor is connected with the controller and inputs pressure signals to a control circuit board of the controller, and the control circuit board comprises an MCU module capable of calculating instantaneous flow of a water outlet of the water pump. And the controller is connected with the motor. The pressure sensor is used at the reasonable position of the water pump as an input variable to calculate the flow of the water pump, an expensive flowmeter is omitted, cost is greatly reduced, a user can select to maintain stable pressure / constant flow of the water outlet of the water pump to control the water pump, and two maximum requirements of the user for the water pump are met. Therefore, the use energy consumption of the water pump is reduced, and the energy-saving purpose is achieved.

Description

Technical field

[0001] The utility model relates to a water pump which controls the water flow rate through pressure. [Background Technology]

[0002] With the development of the market, the energy-saving requirements for the water pump industry are getting higher and higher. For users, it is best to consume the lowest energy under the premise of meeting the demand. For many customers, flow control is a rigid demand. However, due to cost reasons, few manufacturers in the market will implement flow control on the water pumps they produce. Most of them only control the water pumps according to the speed. However, for the same water pump, the same speed, and the same inlet and outlet diameter, when the water pump inlet / outlet opening is not 100% fully open, the flow rate is different. For example, in the swimming pool industry, since the water pump outlet must be After passing through the filter tank, disinfection and other equipment with resistance, the water outlet of the water pump is equivalent to not being fully open (for example, the opening is only 60%, 50%, etc.). At this time, many customers often adjust the speed of the water pump to the maximum to ensure that the water in the entire swimming pool can be completely filtered within a certain period of time (for example, 8 hours). This allows the water pump to operate at the maximum flow rate. This actually wastes a lot of energy and is not the optimal solution. Adding a flow meter to read the water outlet flow of the water pump in real time and then indirectly adjust the water pump speed as feedback is too costly and has low customer acceptance.

[0003] The problem that the present invention needs to solve is that ordinary water pumps cannot know their water supply flow in real time, but customers have a huge demand for water pump flow control. Under the current circumstances, if you want to get the flow rate of the water pump when it is working, you must add a flow meter to collect the flow rate of the water pump, and then control the speed of the water pump to adjust the flow rate of the water pump. The price of an ordinary flow meter is equivalent to the price of a water pump, so in many cases there are basically no manufacturers to control the flow rate of the water pump. [Summary of the invention]

[0004] The purpose of this utility model is to overcome the shortcomings of the existing technology and provide a water pump that can realize real-time monitoring of the water flow rate of the water pump without using an expensive flow meter, thereby reducing costs, meeting customer needs, reducing the energy consumption of the water pump, and being more energy-efficient in controlling the water flow rate by pressure.

[0005] The purpose of this utility model is achieved in this way:

[0006] A water pump that controls water flow by pressure, comprising a main body provided with a water inlet, a cavity and a water outlet; a motor provided on one side of the main body, the impeller of the motor extending into the cavity; and characterized in that it also comprises a controller and a pressure sensor capable of collecting pressure inside the water pump, the pressure sensor being connected to the controller and inputting a pressure signal to a control circuit board of the controller, the control circuit board comprising an MCU module capable of calculating the instantaneous flow at the water pump outlet, and the controller being connected to the motor.

[0007] The water pump that controls the water flow rate by pressure as described above is characterized in that the pressure sensor is arranged near the water outlet.

[0008] The water pump that controls the water flow rate by pressure as described above is characterized in that the controller includes a controller box body, a control circuit board is arranged in the controller box body, and the controller box body is fixed to the upper end of the motor.

[0009] The beneficial effects of the utility model are:

[0010] First, the utility model uses a pressure sensor as an input variable at a reasonable position of the water pump to calculate the water pump flow rate, omitting an expensive flow meter and greatly reducing costs.

[0011] Secondly, the use of a pressure sensor at a reasonable position on the water pump in the present invention also meets the user's demand for pressure control at the water pump outlet, allowing the user to choose to maintain a stable pressure / constant flow at the water pump outlet to control the water pump, thereby meeting the user's two greatest demands for the water pump, thereby reducing the energy consumption of the water pump and achieving the purpose of energy saving.

Brief Description of the Drawings

[0012] Figure 1 It is a structural diagram of the present utility model. [Specific implementation method]

[0013] The present invention will be further described below with reference to the accompanying drawings:

[0014] A water pump that controls water flow by pressure, comprising a main body 1, the main body 1 being provided with a water inlet 2, a cavity 3, and a water outlet 4; a motor 5 being provided on one side of the main body 1, the impeller of the motor 5 extending into the cavity 3; a controller 6 and a pressure sensor 7 capable of collecting pressure within the water pump; the pressure sensor 7 being connected to the controller 6 and inputting a pressure signal into a control circuit board of the controller; the control circuit board comprising an MCU module (microcontroller unit) capable of calculating the instantaneous flow rate at the water pump outlet; and the controller being connected to the motor. When the motor 5 is operating, it draws water into the cavity 3 through the water pump inlet 2, then rotates the water flow through the impeller, and finally discharges the main body through the water outlet 4. During the entire process, the pressure value within the water pump is collected by the pressure sensor 7, and the pressure signal is input into the MCU module. The MCU module analyzes and calculates the input pressure and other signals, calculates the instantaneous flow rate at the water pump outlet, and then controls the operation of the motor according to the instantaneous flow rate, thereby accurately controlling the water output of the water pump.

[0015] The pressure sensor 7 of the present invention is arranged near the water outlet 4 .

[0016] The controller 6 of the present invention includes a controller box body 61 . A control circuit board is disposed in the controller box body 61 . The controller box body 61 is fixed to the upper end of the motor 5 .

Claims

1. A water pump for controlling the water flow rate by pressure, comprising a body (1), the body (1) being provided with a water inlet (2), a cavity (3) and a water outlet (4); a motor (5) being provided on one side of the body (1), the impeller of the motor (5) extending into the cavity (3), characterized in that It also includes a controller (6) and a pressure sensor (7) capable of collecting the pressure inside the water pump. The pressure sensor (7) is connected to the controller (6) and inputs a pressure signal to a control circuit board of the controller. The control circuit board includes an MCU module capable of calculating the instantaneous flow rate of the water pump outlet. The controller is connected to the motor.

2. A water pump that controls water flow by pressure according to claim 1, characterized in that The pressure sensor (7) is arranged near the water outlet (4).

3. A water pump that controls water flow by pressure according to claim 1, characterized in that The controller (6) comprises a controller box (61), a control circuit board is arranged in the controller box (61), and the controller box (61) is fixed to the upper end of the motor (5).

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