Water jet nozzle for solar water heating system

Abstract

The invention discloses a water jet nozzle for a solar water heating system. The water jet nozzle comprises an outer sleeve, an inner sleeve and a base, wherein the bottom of the annular outer sleeve is connected with the edge on the upper surface of the base in a sealed mode, one side of the annular outer sleeve is provided with a cold water inlet, and the inner sleeve is embedded into the annular outer sleeve; the periphery and the axis of the inner sleeve are respectively provided with an annular groove and a hot water cavity, the upper end of the hot water cavity is provided with a hot water inlet, and the annular groove and the inner circumferential surface of the outer sleeve form an annular cold water passage; and the inner sleeve and the base are provided with a plurality of jet devices communicated up and down, a hot water clearance is formed between the bottom end of the inner sleeve and the base, and the middle parts of the jet devices are provided with jet device hot waterinlets communicated with the hot water clearance. Cold water and hot water directly reach the jet nozzle without passing through a water mixing valve and are directly mixed and jetted at the outlet of the nozzle, so that water mixing difficulty due to over high pressure of the cold water and over high temperature of the hot water is not caused; and the water outlet flow and the temperature are stable and the water outlet flow rate is high under the conditions of low fall, low water pressure, high water temperature and the like.

Description

Technical field [0001] The invention relates to a water jet nozzle, which belongs to the field of solar thermal utilization. Background technique [0002] According to the operating principle, solar hot water systems can be divided into pressure-bearing (top-water type) solar hot water systems and non-pressure-bearing (falling water) solar hot water systems. [0003] The unpressurized solar water heating system is widely recognized by the market because of its simple structure and low cost. Because the hot water supply of the non-pressurized solar hot water system mainly depends on the drop between the hot water storage tank and the water point. When the drop between the hot water storage tank and the water point of the non-pressurized solar hot water system is small, the pressure of the hot water is small and the pressure of the tap water is high, resulting in a large pressure difference between the two mixed water streams, resulting in the mixing of the hot water system , The m...

AI Technical Summary

Problems solved by technology

The nozzle uses the principle of water jet to realize the effective mixing of cold and hot water in the non-pressurized solar hot water system at the nozzle, and solves the single or multiple problems of the non-pressurized solar hot water system such as low drop, low water pressure, and high water temperature. Under such conditions, if the water is mixed with tap water with high water pressure and high flow rate, problems such as poor water flow and uneven water mixing will occur.

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