Automatic liquid flow regulating valve

Abstract

The invention discloses an automatic liquid flow regulating valve. The automatic liquid flow regulating valve comprises a valve body, a flow information collecting mechanism and a flow regulating mechanism. A fluid channel is formed in the valve body. The flow information collecting mechanism comprises a magnetic pole rotor, an impeller and a Hall sensor assembly. The impeller is arranged in the fluid channel. The magnetic pole rotor is rotationally arranged behind the impeller. The Hall sensor assembly corresponds to the magnetic pole rotor. Liquid enters the valve from the front side of the impeller, rotates after passing through the impeller and drives the magnetic pole rotor to rotate to generate an alternating magnetic field, and the Hall sensor assembly can detect magnetic field change frequency. The flow regulating mechanism comprises an electric flow regulating valve assembly and a regulating valve controller, and the regulating valve controller can adjust the opening degree of the flow regulating valve assembly according to the frequency signal of the Hall sensor assembly. Flow adjustment control is easy, in addition, the structure is compact, the size is exquisite, a regulating circuit is simple in design, good regulating precision and work stability are achieved, and the automatic liquid flow regulating valve is suitable for liquid flow collecting and control regulating equipment.

Description

technical field [0001] The invention relates to a flow control valve, in particular to a liquid flow automatic regulating valve. Background technique [0002] The current gas water heater consumer market is mainly based on fully automatic intelligent digital constant temperature fast gas water heaters. This type of water heater is equipped with a gas proportional valve at the gas circuit end that can realize precise regulation of gas flow and pressure stability, and is sought after by the market. The emergence of the proportional valve has realized the dynamic matching control of the gas medium, and the gas flow can be adjusted in real time according to different combustion conditions and different model configurations, and the precise control of the bathing temperature has been well realized in a certain temperature working range. The waterway end of the water heater has not been automatically and accurately controlled, and it is still in an open waterway mode that is direc...

AI Technical Summary

Problems solved by technology

[0002] The current gas water heater consumer market is mainly based on fully automatic intelligent digital constant temperature fast gas water heaters. This type of water heater is equipped with a gas proportional valve at the gas circuit end that can realize precise regulation of gas flow and pressure stability, and is sought after by the market. The emergence of the proportional valve has realized the dynamic matching control of the gas medium, and the gas flow can be adjusted in real time according to different combustion conditions and different model configurations, and the precise control of the bathing temperature has been well realized in a certain temperature working range. There is no automatic and precise control of the waterway end of the water heater, and it is still in the open waterway mode that is directly connected to the tap water pipeline. There is only a regulating valve at the water inlet end to manually adjust the water flow.

[0003] Due to the design of the heat load of the water heater, when the temperature of the water inlet end is low, the water temperature of the water heater cannot reach the bathing temperature required by people, and it is necessary to manually adjust the water intake to meet the requirements of the bathing temperature, which is different from the nominal automatic intelligent constant temperature water heater In contrast, at least in terms of water flow regulation at the waterway end, fully automatic functions have not been achieved

[0004] At present, there are also some control valves used to control fluids. For example, stepper motors are used to control the water flow in gas water heaters, but the cost of stepper motor control is relatively high, and the drive circuit and related software codes are relatively complicated. There are many (8), which brings a lot of inconvenience to the design of the control board and the connection of the control valve. At the same time, the traditional stepper motor control scheme has many faults, slow flow adjustment, and it is difficult to accurately obtain the adjustment progress (generally rely on precision and low lag Large flow collection mechanism feedback flow information) and high noise (continuous adjustment takes time, users are easy to perceive mechanical sound), so the use effect is not ideal and it is difficult to promote

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