Self-regulating device for superheat degree at branched coolant outlet of evaporator

Abstract

The invention discloses a self-regulating device for superheat degree at a branched coolant outlet of an evaporator. The self-regulating device comprises a self-regulating core body (2) and a metal short tube (1); the self-regulating core body (2) consists of a plurality of annular core plates, annular end plates and thin rods; the thins rods can make the plurality of core plates form the self-regulating core body (2) through the end plates and small holes in the core plates; and the self-regulating core body (2) is placed inside the metal short tube (1). At least one small hole in each core plate is in close fit with the corresponding thin rod; the other small holes are in clearance fit with the corresponding thin rods; and not every thin rod is in close fit with the small hole which thethin rod passes through. Thus, when temperature changes, each core plate can be directionally compressed and expanded; at one hand, the compression and expansion size of the core body with temperaturechanges can be amplified; on the other hand, the roughness of a coolant channel inside the core body can be increased; the resistance distribution characteristics of coolant branches can be changed;the flow rate of the coolant in each branch of the evaporator can be regulated automatically; thus the superheat degree of the coolant outlet of each branch can be regulated; and the economic efficiency.

Description

Technical field [0001] The invention belongs to the technical field of refrigeration and air-conditioning system manufacturing, and in particular relates to a self-regulating method for the bypass flow of an evaporator refrigerant and a self-regulating device for the superheat degree of the outlet of the evaporator bypass refrigerant. Background technique [0002] At present, the indoor evaporator of the air conditioning system is generally composed of multiple refrigerant shunts, and the distribution characteristics of the refrigerant flow of each shunt has a great influence on the performance of the air conditioning system. Appropriate refrigerant flow distribution can make full use of the latent heat of the refrigerant and improve the energy efficiency ratio of the system. Unreasonable refrigerant flow distribution will cause uneven temperature distribution of each branch, which may cause serious uneven evaporation of the refrigerant of each branch, and some branches It is una...

AI Technical Summary

Problems solved by technology

Appropriate refrigerant flow distribution can make full use of the latent heat of refrigerant and improve the energy efficiency ratio of the system. Unreasonable refrigerant flow distribution will cause uneven temperature distribution in each branch, which may lead to serious uneven evaporation of refrigerant in each branch. It cannot be completely evaporated, and the shunt refrigerant evaporates prematurely, so that the latent heat of the refrigerant is not fully utilized and the performance of the air conditioner is reduced.

At the same time, due to the continuous improvement and improvement of the processing technology of the liquid distribution head, the refrigerant flow rate of each branch can be made as uniform as possible. However, the uniform flow rate of each branch of the evaporator may not be very reasonable in practical applications.

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