Constant temperature balanced pressure water nozzle valve core

Abstract

The invention relates to a nozzle valve core with constant temperature and pressure, comprising a valve sleeve, and a temperature regulating assembly, a thermal sensitive element, a regulator and a return spring cooperatively arranged in the internal chamber of the valve sleeve from top to bottom, and further comprising a water separating element and a compressing sealing element sleeved in the internal chamber of the valve sleeve. A water outlet, a cold water inlet and a hot water inlet are arranged at different heights of the side wall of the valve sleeve from top to bottom; the water separating element is matched with the cold water inlet and hot water inlet to confine a cold water pathway and a hot water pathway and provide a cold water control opening and a hot water control opening respectively matching with the cold water pathway and the hot water pathway; the compressing sealing element is sealed with the inner wall of the valve sleeve and compresses the water separating element in the valve sleeve; and the regulator floats between the cold water control opening and hot water control opening under the action of the thermal sensitive element and the return spring. The invention forms a zigzag water inlet pathway to remarkably balance water inlet pressure while ensuring constant temperature, and also has the advantages of simple structure, safety and reliability.

Description

technical field [0001] The invention relates to the technical field of plumbing equipment, in particular to a constant temperature and pressure balancing valve core. Background technique [0002] With the advancement of science and technology and the improvement of living standards, valve cores with constant temperature functions have been widely used in various bathing water supply systems such as homes and hotels. After setting, the mixed outlet water temperature is constant, which can avoid the problem of hot and cold outlet water temperature caused by the change of inlet water pressure and temperature instability of ordinary valve cores, and is safe and anti-scald. [0003] The key point to effectively control the constant outlet water temperature is to sense the real and effective outlet water temperature, and to be able to sensitively adjust the ratio of hot and cold inlet water. The sensing of the true and effective outlet water temperature means that the hot and col...

AI Technical Summary

Problems solved by technology

Most of the existing thermostatic spools do not provide the function of equalizing pressure, that is, cold water and hot water directly enter the mixing chamber from the bottom or side of the spool for mixing; while a small number of thermostatic spools that provide the function of balancing pressure use independent The principle is to balance the inlet water pressure through the floating of the balanced pressure component, such as the utility model patent No. 200620053245.1 in China. However, the disadvantage of using an independent balanced pressure component is that the structure is complex and difficult to assemble

[0005] In addition, the existing thermostatic valve core can be adjusted in a wide range of temperature, its upper limit temperature value is relatively large, and there is no control of the insurance temperature, which makes it very easy to cause burns and other accidents due to excessive water temperature when the operation is improper.

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