SU438846A1 - Evaporator - Google Patents

Description

one

This invention relates to vaporizers for cooling gas, for example air.

Known evaporators, containing placed in the housing of the pipe, measuring on the outer surface of the porous material.

The purpose of the invention is to intensify heat transfer and reduce refrigerant entrainment.

This is achieved by placing the pipes in two axisymmetric planes with the formation of two sections and a diffuser vapor channel between them, and a steam superheater connected through an intermediate collector with sections connected in series in a cooled medium is installed at the steam outlet.

FIG. 1 shows the described evaporator, a longitudinal section; in fig. 2 is a section along A-A in FIG. one; .on FIG. 3 is a view along arrow B in FIG. one; .on FIG. 4 is a view along arrow B in FIG. one; in fig. 5 is a section along G ‑ Y in FIG. 2

The evaporator contains flat tubes 1 provided with corrugated plates 2. The tubes form the upper and lower sections and are wrapped outside with a hydrophilic porous material 3, for example graphite cloth. This material is held on the edges of the flat tubes 1 by means of hollow rods 4. The dispensing grid 5, consisting of perforated round tubes, is attached to the separating collector 6 and tightly adheres to the distribution layer 7 of hydrophilic porous material. Hot air is supplied and discharged through the pipes 8.

and 9. The superheater 10 consists of flat tubes 11 provided with corrugated plates 12. Corrugated plates 13 are also placed in the annular cavity of the superheater 10. The steam 14 is directed to the low-pressure region through the nozzle 14. The superheater 10 is connected to the upper and lower sections of the evaporator via an intermediate Manifold 15. The evaporator operates as follows.

Liquid refrigerant is supplied to the evaporator through the nozzles of the distribution grids 5, passes through a layer of compacted hydrophilic porous material 7, is distributed over the surface of the evaporator, wets evenly

the surface of the tubes 1. and evaporate,. absorbs heat from their walls. Hot air through pipe 8 enters the flat tubes 1 and releases heat to the walls of the tubes, cooled externally by evaporating coolant. Couples

the refrigerant, the passage through the tubes AND the superheater 10, take a certain amount of heat from the air passing between the tubes 11, and through the pipe 14 out into the region of LOW. Coolant drops,

contained in the pair, while fully