Plate heat exchanger, method for operating a plate heat exchanger and method for production of a plate heat exchanger

L'oxygene liquide de la colonne basse pression forme un bain (5) au sommet d'un echangeur (2) du type a plaques a passages verticaux (17,18). The liquid oxygen from the low pressure column forms a bath (5) at the top of a heat exchanger (2) of the type with vertical passages plates (17,18). Ce liquide est pre-distribue le long d'un passage (17) sur deux au moyen d'une serie de trous (27) menages par exemple dans les plaques, puis est uniformement distribue de facon fine dans les memes passages par un garnissage (24), de facon a former un film liquide ruisselant continu. This liquid is pre-distributed along a passage (17) two by means of a series of holes (27) formed for example in the plates, and then is uniformly distributed finely in the same passages by a packing ( 24), so as to form a continuous flowing liquid film. L'azote gazeux de la colonne moyenne pression est introduit dans les passages (18) restants et est condense par echange de chaleur avec l'oxygene, qui est vaporise. The nitrogen gas of the medium pressure column is introduced into the passages (18) remaining and is condensed by heat exchange with oxygen, which is vaporized.

Device for evaporating a liquid by heat exchange with a second fluid and air distillation unit comprising such a device

A plate-type heat exchanger is configured in such a manner that first flow passages (A) and second flow passages (B) are alternately formed between heat transfer plates (1) provided at predetermined intervals and in such a manner that inner fins (2) are provided to the first flow passages (A) and the second flow passages (B). Each of the heat transfer plates (1) is provided with: an upstream passage hole (20a) which serves either as an inlet for letting first fluid into the first flow passage (A) or as an inlet for letting second fluid into the second flow passage (B); and a downstream passage hole (20b) which serves either as an outlet for letting the first fluid out of the first flow passage (A) or as an outlet for letting the second fluid out of the second flow passage (B). Each of the first flow passages (A) and the second flow passages (B) has installed therein a flow regulation plate (30) mounted so as to separate the upstream passage hole (20a) and the inner fin (2). Each of the flow regulation plates (30) has openings (31) serving as flow passages for the first fluid or the second fluid and is configured such that the areas of the openings (31) are adjusted so that flow passage resistance decreases from the side close to the upstream passage hole (20a) toward the side far therefrom.

Plate-type heat exchanger and refrigeration cycle device with same

The present invention relates to a plate heat exchanger--capacitor evaporator with a heat exchanger block (10), and the plate heat exchanger--capacitor evaporator has a plurality of heat exchanger plates (20, 30) with a liquid guide structure (21, 31) ; the heat exchanger block (10) has a first outer surface (11), a second outer surface (12) opposite the first outer surface (11), a third outer surface (13) and a fourth outer surface (14) opposite to the third outer surface (13); the liquid guide structure (21) of the first heat exchanger plate (20) has first and second openings (211, 212) which are not covered by a liquid introduction pipe and a liquid collection pipe; the liquid guide structure (31) of the second heat exchanger plate (31) extends between a liquid introduction pipe (40) arranged on the heat exchanger block (10) and a liquid collection pipe (50) arranged on the heat exchanger block (10); the liquid introduction pipe (40) is arranged on the first outer surface (11); the first opening (211) of the liquid guide structure (21) of the first heat exchanger plate (20) is either arranged in a region of the first outer surface (11) which is not covered by the liquid introduction pipe (40), or is arranged on a first area of the third outer surface (13) and a first area of the fourth outer surface (14).

Plate heat exchanger, method for operating a plate heat exchanger and method for production of a plate heat exchanger

References

Device for evaporating a liquid by heat exchange with a second fluid and air distillation unit comprising such a device

Plate-type heat exchanger and refrigeration cycle device with same

Plate heat exchanger-capacitor evaporator and method for cryogenic decomposition of air

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