CZ308098B6 - Exchanger module based on hollow polymer fibres - Google Patents

Abstract

The hollow polymer fibre exchanger module consists of a bundle of spaced hollow fibres (1) interconnected by a compact adhesive layer (4) at a distance from the end of the bundle, which together with the adhesive layer (4) is inserted into the collecting chamber mouth (2), in which the bundle is anchored with filling compound (8). The free ends (3) of the fibres (1) protrude through the neck (5) located at the end of the tapered mouth of the chamber (2), into the widening interior space (6) of the chamber (2), from their ends (3) the fibres (1) are encapsulated with encapsulating compound (8).

Description

Technical field

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hollow polymer fiber heat exchanger module which is formed by a bundle of spaced hollow fibers interconnected by a compact adhesive layer at a distance from the end of the bundle which is inserted into the collecting chamber mouth. where the bundle is anchored with potting compound.

Technical background

The hollow polymer fiber-based heat exchanger modules or filter devices are formed by a hollow fiber bundle at both ends anchored in the collecting chambers so that the fiber cavities communicate with the interior of the two chambers. As a result of the pressure drop between the chambers, one medium then flows through the fiber cavities, and there is a transfer of heat or mass, or both, between the medium and the external medium. The anchoring of the hollow fibers in the collecting chamber is described in a number of patents.

In US 5639373 the fiber ends are immersed in a solidifying liquid, such as liquid wax, until the liquid solidifies. Subsequently, embedding resins are applied over this solidified liquid and allowed to cure between the fibers. The solidified liquid is then removed, for example by heating or dissolving, thereby releasing passages into the fiber voids previously sealed with the solidifying liquid. In US 6042373 a bed of powdered material has the same function as the setting liquid.

US 5922201 describes a method of forming a hollow fiber module, which comprises stacking a continuous hollow fiber on a bundle length alternately side by side with regular spacing. The fibers at the ends of the bundle are not opened because the ends of the bundle form bends in the fiber. The ends of the bundle are immersed in the setting material. After curing, the fiber and resin block is cut and the fiber cavities are released. The resin block is glued into the mouth of the collecting chamber or fixed therein by means of a seal.

According to US 8864990, a bundle of hollow fibers, which are spaced in rows, is permeated at the end by an adhesive layer. However, this leaves the mouth of the cavities in the fibers open. A second identical adhesive layer is formed at a distance from this first layer. Upon insertion of the end of the fiber bundle into the collecting chamber mouth, the space delimited axially by both adhesive layers and the radial chamber walls is filled, e.g., through an opening in the chamber wall, solidifying with potting compound which permanently fixes the bundle in the chamber mouth and fibers.

Known solutions for connecting the hollow fiber bundle to the collecting chamber assume that the overpressure in the chamber and in the fibers relative to the environment will be in the order of tenths of MPa. However, in some applications where the use of hollow fiber modules would be beneficial, the pressure inside the chambers and fibers reaches up to MPa units. The existing constructions of collecting chambers made of plastic cannot withstand such pressure. There is a risk of the adhesive layer bulging and deforming the mouth of the chamber resulting in loosening of the fiber bundle.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a hollow fiber module, respectively. the module chamber and the anchoring of the fiber bundle therein so that the structure can withstand higher pressures while avoiding high production demands.

- 1 GB 308098 B6

SUMMARY OF THE INVENTION

This object is solved by a hollow polymer fiber exchanger module consisting of a bundle of spaced hollow fibers interconnected by a compact layer of adhesive at a distance from the end of the bundle which, together with the layer of adhesive, is inserted into the collecting chamber mouth. potting compound. The principle of the solution is that the free ends of the fibers protrude through the neck, which is located at the end of the tapered mouth of the chamber, into the widening interior space of the chamber.

The module chamber may have a circular or longitudinal shape in the axis direction.

In the case of the longitudinal shape of the chamber, its opposing walls may be connected in the region of the neck by reinforcing brackets to prevent the mouth of the chamber from being expanded due to internal overpressure.

Clarification of drawings

1 is an axial sectional view of an exemplary embodiment of a module according to the invention, and FIG. connecting the fiber bundle to the module collection chamber. Giant. 2 and 3 show the S-direction view of FIG. 1 in two different module embodiments.

DETAILED DESCRIPTION OF THE INVENTION

The hollow fiber module - see its ending according to Fig. 1 - consists of a bundle of hollow polymeric fibers 1 and a collecting chamber 2. The fibers 1 are guided at intervals in rows and the bundle can be, for example, a circular cross section - see Fig. 3 or rectangular section. see Fig. 2. The shape of the chamber 2 corresponds to this.

The fiber bundle 1 is spaced from the ends 3 of the fibers 1 by a compact adhesive layer 4 which fixes the fibers 1 at intervals. The bonding layer with the adhesive layer 4 is formed in a known manner, for example by placing a series of fibers arranged in parallel in a plane across the strip by adhesive bonding or glueing over with a soft adhesive tape.

The chamber 2 has a tapered mouth; in the case of a chamber of circular cross-section, the walls of its mouth are conical; in the case of a rectangular chamber, the substantially planar walls of the mouth converge towards the inside of the chamber. At the narrowest point of the mouth there is a throat 5, behind which the inner space 6 of the chamber opens. The chamber 2 is provided with an inlet resp. outlet 7, or through a mouthpiece.

The end of the fiber bundle 1 is inserted, including the adhesive layer 4, into the mouth of the chamber 2 so that the ends 3 of the fibers 1 project in a fan-like manner into its interior space 6. The adhesive block 4 is tightly inserted or glued into the chamber 2. The fibers are then encapsulated in the region of the neck 5 by the hardening potting compound 8. The space occupied by the potting compound 8 is delimited by the walls of the chamber 2 with an adhesive layer 4 and a level 9 which is spaced from the fiber ends 3. the axis of the module in the vertical position or even in the horizontal position on the centrifuge.

In the rectangular embodiment of the chamber 2 of FIG. 2, the longitudinal walls of the chamber 2 are prone to opening under pressure. This is prevented by reinforcing brackets 10 which are anchored in opposite walls of the chamber 2 and which interconnect these walls.

PATENT CLAIMS

Claims (3)

Hollow polymer fiber exchanger module comprising a bundle of spaced hollow fibers (1) interconnected by a compact adhesive layer (4) at a distance from the end of the bundle which is inserted into the mouth with the adhesive layer (4) a collecting chamber (2) in which the bundle is anchored by the sealing compound (8), characterized in that the free ends (3) of the fibers (1) project 5 of the neck (5), located at the end of the tapered mouth of the chamber (2), into the expanding interior space (6) of the chamber (2), the fibers ( 1) encapsulated with potting compound (8). Exchanger module according to claim 1, characterized in that the module chamber (2) has a circular shape in the axis direction (S). Exchanger module according to claim 1, characterized in that the module chamber (2) has a rectangular shape in the axis direction (S). Exchanger module according to claim 2, characterized in that the opposite walls of the chamber (2) are interconnected by reinforcing brackets (10) in the region of the neck (5).