Novel adjustable ejector

Abstract

The invention discloses a novel adjustable ejector. The ejector is composed of ten components including a working medium inlet, an injection working medium inlet end, a compressed working medium outlet, a nozzle, a suction chamber, a mixing chamber, a pressure expansion chamber, a distance measuring needle a, a distance measuring needle b and an adjusting cone. In order to facilitate adjustment and seal, all contact components are connected in a spiral manner. Through rotation of the nozzle and the adjusting cone, the axial position of the nozzle and the throat area of the nozzle can be adjusted, rulers are marked on the nozzle and the adjusting nozzle, and the distance between an outlet of the nozzle and an inlet of the mixed chamber can be obtained at any time through the distance measuring needles, and the throat area of the nozzle can be obtained at any time through the distance measuring needles. The novel adjustable ejector is simple in structure and convenient to operate; and stability of the performance of the ejector under the variable working condition can be enhanced, and the high adaptability is achieved.

Description

technical field [0001] The invention relates to a new type of adjustable injector, in particular to a nozzle that can adjust the axial position of the nozzle and the throat area of ​​the nozzle, and the nozzle and the adjustment cone are engraved with scales, and the nozzle can be obtained at any time through the distance measuring needle. The distance from the outlet to the inlet of the mixing chamber and the throat area of ​​the nozzle. The injector is an energy exchange device through which energy can be transferred from high-pressure fluid to low-pressure fluid. Background technique [0002] The ejector was first proposed by Parson in 1901. It is an energy exchange device. The ejector can transfer energy from high-pressure fluid to low-pressure fluid. It has the advantages of simple structure, reliable operation, and easy maintenance. [0003] As the core component of the ejector refrigeration system, the structure of the ejector (such as the distance between the nozzle ...

AI Technical Summary

Problems solved by technology

[0003] As the core component of the ejector refrigeration system, the structure of the ejector (such as the distance between the nozzle outlet and the inlet of the mixing chamber, the ratio of the cross-sectional area of ​​the nozzle outlet to the throat cross-sectional area, and the ratio of the cross-sectional area of ​​the mixing chamber to the throat cross-sectional area ratio) has a great influence on the performance of the ejector refrigeration system. However, the traditional ejectors are all fixed structures and are designed under a given working condition. Once manufactured, they can only be optimized under the designed working conditions However, it is difficult to maintain the working state of the system at the design working state under the actual working state, so once the working state of the generator, evaporator and condenser deviates from the design parameters, the performance of the ejector refrigeration system will decline

In order to enhance the applicability of the ejector and avoid or reduce the impact on the performance of the ejector refrigeration system due to changes in actual working conditions, people try to design an ejector with better adjustability, but the adjusted structural parameters are A single parameter, unable to adjust the structural parameters of the injector more comprehensively

Images