DE102008003060A1 - Plate heat exchanger for use in e.g. cycle-connected energy recovery system, has flow channels for gaseous medium guided in reverse flow to liquid, where flow channels are formed by walls of plates, and bars arranged perpendicular to plates - Google Patents

Abstract

The exchanger has plates (2) spaced to each other and flowed with liquid, where the plates comprise flow collecting areas (5) and parallel running flow channels (4). A supplying pipe connecting piece (9) and a service connecting piece (10) are attached to connecting pipes, where the pipes are flowed from a gaseous medium. Flow channels for the gaseous medium are guided in reverse flow to the liquid, where the flow channels are formed by walls of the plates. Bars are arranged perpendicular to the plates.

Description

The The invention relates to a plate heat exchanger for heat transfer of gases and gas mixtures (eg air) to liquid media (eg water or brine) and vice versa.

Of the Plate heat exchanger should have a high degree of transmission at low temperature differences between the media under particular Allowing attention to low pressure losses of the media involved.

Of the primary application of the plate heat exchanger is in air and climate technology for energy recovery in closed loop energy recovery systems as well in recooling plants and for heating and cooling polluted gaseous media and related Applications.

It is known to use heat exchangers in closed-loop energy recovery systems. The disadvantages of the commonly used heat exchanger design with transverse to the air direction built-in tubes and multiple deflection of the flow direction have been in the DE 10 2004 054 006 A1 described in detail.

In the DE 10 2004 054 006 A1 a heat exchanger is described, which operates on the countercurrent principle, with distributors and collectors are in the air flow and actively participate in the heat exchange.

Plate heat exchanger Air / water are used very rarely in the air and air conditioning because the supply and discharge of the liquid medium without Blockage of the flow path of air only with comparatively high effort is possible.

Of the Invention is based on the object, a plate heat exchanger for heat transfer of gases and gas mixtures (eg air) to liquid media (eg water or brine) and vice versa, the high levels of exchange with minimal pressure losses the participating media.

All Components of the heat exchanger including the Distributor and the collector should act as an active heat exchange surface be involved in the heat exchange.

there It is necessary to connect the distributor and the collector to the liquid-flow plates of the plate heat exchanger so to perform that hinders the flow avoided become. Furthermore, corners, edges and thickening should be avoided which hinder the drainage of condensate and favor dirt deposits can.

Of the Plate heat exchanger should be easy to clean.

The Heat exchanger design is intended to the formation of various Plattenwärmeaustauscherbaugröße several identical individual plate heat exchangers, which are arranged side by side and one above the other, allow.

Of the Plate heat exchanger is intended as a frameless and self-supporting Construction to be performed.

The The object is achieved by the in the Patent claims mentioned features solved.

The Advantages of the plate heat exchanger according to the invention are described below with reference to accompanying drawings. The following descriptions and the accompanying drawings have only an exemplary character and describe or show each one of many possible solutions.

The plate heat exchanger according to the invention 1 consists of individual plates through which liquid flows 2 and between the plates 2 located flow channels 11 for the countercurrently conducted gaseous medium.

The flow channels 11 for the gaseous medium are through the walls of the plates 2 and the vertical between the plates 2 located bridges 12 educated.

The bridges 12 can be carried out as continuous webs or as non-continuous webs with gaps.

The Gaps can be used for better condensate drainage be used.

The plates 2 consist of a distribution area 3 at the beginning of the plate 2 and subsequent flow channels 4 for the liquid medium and a collection area 5 at the end of the plate 2 , Right-angled to the plates 2 There is a flow around the gaseous medium manifold 6 and on the opposite side of the plate a collector tube 7 ,

The plates 2 be on the entry and exit side by perpendicular to the plates 2 arranged connecting pipes 8th in the upper and lower part of the plates 2 connected.

The connecting pipes 8th are used for ventilation and emptying by means of service nozzles 10 and to stabilize the disk pack needed.

manifold 6 , Collector tube 7 and connecting pipes 8th be partially in the plates 2 integrated.

Embodiments of the plate heat exchanger according to the invention 1 are shown in the drawings and will be described in more detail below.

It demonstrate

1 shows the side view of the plate heat exchanger 1 with a plate 2 with manifold 6 and collector tube 7 and the connecting pipes 8th ,

2 shows a section AA of the plate heat exchanger 1 out 1 ,

3 shows the view CC 2 ,

It proves to be advantageous that the gaseous and the liquid medium within the plate heat exchanger 1 within flow channels 4 . 11 be conducted in countercurrent. Since no deflection takes place in this area, low pressure losses result.

The straight flow direction within the flow channels 4 . 11 leads to a low tendency to fouling associated with a design-related self-cleaning effect.

In certain operating conditions resulting condensate is due to the flow of the gaseous medium from the flow channel 11 rinsed.

When using non-continuous bars 12 with intervals, accumulating condensate can be removed early. This will frost and frost the plate heat exchanger within the flow channels 11 minimized.

It is also advantageous that the manifold 6 and the collector pipe 7 To be flowed around by the gaseous medium. As a result, these components actively participate in the heat transfer.

The design of the plate heat exchanger 1 with arranged in the gas flow manifold 6 and collector tube 7 allows maximum utilization of the available inflow area.

Thereby on the one hand the flow velocity in comparison to finned tube heat exchangers with laterally arranged distributors and collectors reduced and on the other hand the streamed Enlarged heat exchanger end face.

Another advantage is the possibility of several plate heat exchangers 1 connect side by side and one above the other in parallel.

from that result in low production and storage costs.

The plate heat exchanger according to the invention 1 is preferably used in air and climate technology for energy recovery in closed-loop energy recovery systems as well as in recooling plants and for the heating and cooling of polluted gaseous media as well as in related applications.

QUOTES INCLUDE IN THE DESCRIPTION

This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.

Cited patent literature

• - DE 102004054006 A1 [0004, 0005]

Claims (5)

Plate heat exchanger ( 1 ) for heat transfer of gases and gas mixtures (eg air) to liquid media (eg water or brine) and vice versa consisting of individual spaced-apart and liquid-flow-through plates ( 2 ) with within the plates ( 2 ) distribution areas ( 3 ) and parallel flow channels ( 4 ) and collection areas ( 5 ) All plates in a partially integrated into the plates manifold ( 6 ) and a semi-integrated header pipe ( 7 ) as well as in partially integrated connecting pipes ( 10 ), to each of which a supply pipe socket ( 9 ) or a service port ( 10 ), wherein above-mentioned tubes are flowed around by the gaseous medium and except for the supply pipe ( 9 ) and Service Port ( 10 ) at right angles to the plates ( 2 ) and flow channels ( 11 ) for the guided in countercurrent to the liquid gaseous medium, said flow channels ( 11 ) through the walls of the plates ( 2 ) itself and at right angles to the plates arranged webs ( 12 ) are formed. Plate heat exchanger according to claim 1, wherein the plate heat exchanger two or n of the gaseous medium flow around distributor pipes ( 6 ) or collector tubes ( 7 ) contains. Plate heat exchanger according to claim 1 or 2, wherein each distributor tube ( 6 ) or collector tube ( 7 ) two to n supply pipe socket ( 9 ) are arranged. Plate heat exchanger according to claim 1 or 2 or 3, wherein the webs ( 12 ) can be executed continuously or intermittently. Plate heat exchanger according to claim 1, wherein the construction the plate heat exchanger is self-supporting and frameless.