Temperature difference limiting and low-resistance electric adjusting valve and adjusting method for air conditioner water system

Abstract

The invention belongs to the technical field of air conditioner water supply, and particularly provides an air conditioner water system temperature difference limiting and low-resistance electric adjusting valve and an adjusting method.The air conditioner water system temperature difference limiting and low-resistance electric adjusting valve comprises a controller and a valve body arranged on a water outlet pipeline on the primary side of a heat exchanger, and a temperature-flow linear adjusting function is set in the controller; if the return water temperature of the valve body is within the limit set value range, the controller adjusts the valve opening degree according to the detection value of the first temperature sensor and the linear adjustment function, and if the return water temperature exceeds the limit set value, the controller linearly adjusts the valve opening degree through the linear adjustment function so as to guarantee that the return water temperature is within the safety value range. Compared with a conventional electric adjusting valve, the electric adjusting valve does not need to increase much cost, and meanwhile the circulating water amount and resistance of a system are reduced. And the temperature difference of supply water and return water on the primary side is ensured to be within a designed allowable range. The problem of overflowing is avoided, and meanwhile the requirement for the air temperature is met.

Description

technical field [0001] The invention relates to the technical field of air-conditioning water supply, and more specifically, relates to an electric regulating valve and an regulating method for limiting temperature difference and low resistance in an air-conditioning water system. Background technique [0002] In the air-conditioning variable flow water system, in order to ensure the controllability of the heat exchange on the use side and the hydraulic balance on the supply side, a dynamic pressure difference balance electric control valve is usually used. The dynamic pressure difference balance electric control valve uses its own spring, diaphragm and The pressure induction tube creates a small environment with constant pressure difference at both ends of the valve, so that the pressure difference between the front and back of the valve is always consistent when the valve changes the opening degree and flow rate, so that the valve opening degree and heat exchange intensity ...

AI Technical Summary

Problems solved by technology

[0004] What the present invention needs to solve is the technical problem that the ordinary regulating valve in the prior art cannot perform precise control of flow and energy

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