Single handle constant temperature constant pressure valve core

Abstract

The invention relates to a single-handle constant-temperature pressure-measuring valve core which comprises a valve sleeve, a temperature adjusting component arranged in an inner cavity of the valve sleeve from top to bottom in concert with the valve sleeve, a thermal sensitive element, an adjustor and an offsetting spring as well as a water diversion mechanism and a compress sealing part which are sheathed in the inner cavity of the valve sleeve; a cold water inlet and a hot water inlet are opened on the valve sleeve, and a water outlet is opened in the middle of the valve sleeve; the water diversion mechanism matches with the cold water inlet and the hot water inlet to control the cold water passage and the hot water passage, and a cold water control port and a hot water control port which are matched with the cold water passage and the hot water passage are provided; the compress sealing part forms an airtight space together with the inner cavity of the valve sleeve and presses the water diversion mechanism inside the valve sleeve; under the action of the thermal sensitive element and the offsetting spring, the adjustor floats between the cold water control port and the hot water control port. In the invention, the constant temperature is guaranteed, meanwhile a zigzag water inlet passage is formed, which has an obvious effect on balancing the water inlet pressure, and the valve core also has the advantages of simple structure, security 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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