Dynamic return water temperature flow regulating valve

Abstract

The invention discloses a water flow regulating valve and particularly discloses a dynamic return water temperature flow regulating valve in a heating, ventilating and air conditioning water system. The dynamic return water temperature flow regulating valve is used for controlling the water flow of a heat-transferring coil and comprises the water flow regulating valve, a driver, a return water temperature sensor, an indoor temperature sensor, an indoor switch and a controller. The return water temperature sensor and the indoor temperature sensor are added, and an indoor temperature set value and a control return difference are preset inside the controller, so that the defect that water flow regulating valves in existing heating, ventilating and air conditioning water systems can not determine reasonable return water temperature set values to regulate the water flow according to indoor temperatures and indoor temperature set values is overcome, the water flow is reduced to the maximum extent, the water pump energy consumption is saved and the main machine refrigeration efficiency is improved when the conditions of indoor cold, hot and humid loads are met, and meanwhile, the cold or heat energy waste caused by the improper installation and usage of the indoor temperature controller can be avoided.

Description

technical field [0001] The invention relates to a water flow regulating valve, in particular to a dynamic return water temperature and flow regulating valve for controlling the water flow of a heat exchange coil in a HVAC water system. Background technique [0002] In the HVAC water system, a water flow control valve is used on the water pipe of the heat exchange coil to adjust the air outlet parameters of the heat exchange coil. The on-off and continuous adjustment water flow regulating valves can only adjust the cold and heat output by the heat exchange coil by adjusting the flow, and cannot reasonably control the return water temperature to meet the requirements of indoor cold, heat and humidity. While meeting the requirements of the load, reduce the water flow of the heat exchange coil to achieve the purpose of reducing the energy consumption of the water pump and improving the efficiency of the main engine. The Chinese invention patent with the publication number CN101...

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention is to overcome the deficiency that the water flow regulating valve in the existing HVAC water system cannot determine a reasonable return water temperature setting value according to the indoor temperature and the indoor temperature setting value to adjust the water flow, and provide a A dynamic return water temperature and flow regulating valve that can select an economical and reasonable return water temperature setting value according to the detected indoor temperature and the preset indoor temperature setting value, so as to meet the requirements of indoor cold, heat and humidity loads. Under certain conditions, the water flow rate can be minimized, and at the same time, the indoor temperature can be raised or lowered quickly, and the room temperature can be found to be too low in time, and the phenomenon of wasting cooling or heat caused by improper installation and use of the indoor temperature controller can be avoided.

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