Constant-temperature automatic control method and device for central heating flow valve

Abstract

The invention relates to a constant-temperature automatic control method and a device for a central heating flow valve. The device is provided with a motor and an optocoupler detection disk, wherein the motor drives a flow valve lift pin to stretch longitudinally by a transmission device, the optocoupler detection disk is connected with the motor in a transmission way and used for rotating along with the lift pin in a linked way with fixed transmission ratio; an annular optical detection area is arranged on the side wall of the optocoupler detection disk, an optical signal count area distributed along the circumferential direction is arranged in the detection area, an optocoupler device facing toward the annular optical detection area of the optocoupler detection disk is fixed in a position opposite to the side wall of the optocoupler detection disk, and the optocoupler device is used for receiving optical signals transmitted by the annular optical detection area and the optical signal count area; the optocoupler device is connected with the input end of a controller; the input end of the controller is connected with a temperature sensor which is used for detecting room temperature; and the output end of the controller is connected with the motor by a driving control circuit so as to drive the motor to rotate. The constant-temperature automatic control method and device have the advantages of being capable of automatically regulating central heating quantity according to environment temperature and being energy-saving, and an optocoupler sensing device is utilized to control the work of the central heating flow valve, thereby having the advantages of being high in response speed and high in control precision.

Description

technical field [0001] The invention belongs to a control device, in particular to a constant temperature automatic control method and device for a heating flow valve. Background technique [0002] In order to adjust the heating capacity of the heating system, a valve whose flow rate is controlled by a thimble is usually installed at the heating input port. The existing thimble-type heating flow valves are all controlled by a manual knob: turn the knob forward to make the distance between the thimble and the valve inlet When the gap between the thimble and the valve inlet is reduced, the heat flow of the input heating air decreases, and the temperature of the heating air decreases; when the reverse rotation of the knob increases the gap between the thimble and the valve inlet, the heat flow of the input heating air increases, and the temperature increases. Because it is manual control, it can only control the room temperature passively, which is inconvenient to use, and beca...

AI Technical Summary

Problems solved by technology

Because it is manually controlled, it can only control the room temperature passively, which is inconvenient to use, and because the heating flow cannot be adjusted in real time according to the room temperature, it causes a waste of energy

There are also temperature controllers for automatic control, but there are deficiencies of slow response and low control accuracy

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