DE1127924B - Cross-flow plate heat exchanger with intermediate links as spacers for the plates - Google Patents

Description

Cross-flow plate heat exchanger with spacers in between for the panels The invention relates to one of individual parallel to each other horizontal cross-flow plate heat exchanger with smooth plates on both sides, in which to form channels between the plates special intermediate members, which keep the plates at a small distance from each other, are provided.

They are cross-flow plate heat exchangers that work according to the recuperative process known, in which the distance between the individual plates by superscript, Corrugated sheet metal strips are guaranteed, which run in the plane of the plate and alternate in front of and behind through bolts are placed, which are perpendicular to the individual Plates are directed and serve to clamp them together by means of screwing.

Furthermore, recuperative heat exchangers working according to the countercurrent process are used known, in which to support the boundary walls of the gas duct raised Wire loops are used, with each U-shaped arches by means of special Retaining plates are attached to the duct boundary walls.

It is also known for cross-flow plate heat exchangers for holding to use so-called corner plates for the individual panels.

The above-mentioned known recuperative heat exchangers have manufacturing technology and assembly-wise a complicated structure, which their many, for bring the necessary individual parts with them.

It is the object of the invention to eliminate this disadvantage. The solution this consists in that each spacer between the individual plates of the The heat exchanger body consists of a single metal wire that is parallel to the plane of the plate Is bent serpentine to U-shaped turns, the legs of the U-shaped Windings essentially parallel to the direction of flow of the respective medium lie, the base of each U-shaped turn lies outside the perimeter of the plates and the metal wire along the entire line of contact with the two adjacent ones Plates fixed, e.g. B. is connected by soldering.

To make the structure of the heat exchanger body as rigid as possible and a to maintain a fixed connection between its individual parts in many places, is in a known use of so-called corner plates in development the invention further proposed this gusset with the end faces of the Connect the ends of the outer legs firmly (by soldering). more details The subject of the invention emerge from the following description of the drawing.

An exemplary embodiment of the invention is shown in the drawing. 1 shows the heat exchanger in plan view, and FIG. 2 shows a section according to FIG Line II-11 of FIGS. 1 and 3 shows the spacer in section in an enlarged manner Scale.

Between individual plates 11 which are smooth on both sides, there are arranged wave-like shaped and uninterrupted spacers 12, the arches 12 'of the individual loops lying outside the circumference u of the plates 11. The spacers 12 consist of suitable products, such as metal wire, and are firmly connected to the individual plates 11 over their entire length - with the exception of their arches 12 '-, for. B. soldered. This gives the plates 11 increased rigidity and can withstand the pressures of the media flowing through.

The plate package is additionally held by corner plates 13 with the individual plates 11 and firmly connected to the ends of the outer legs 12 ″ are. To increase the strength of the plate package, the two legs are located 12 "and 12" 'of the outer loops of the spacer 12 directly next to one another.

When using a metal wire with a circular cross-section as Raw material for the Spacer 12 is made after manufacture the wave shape of the circular cross-section slightly pressed (Fig..3), whereby the wave shape remains (stable). The pressed-on surfaces 14 rest on the plaits 11.

Claims (4)

PATENT CLAIMS: 1. From individual parallel planes, on both sides; smootheg; Plate-mounted cross-flow plate heat exchanger, in the case of the special interstices for the formation of gullies between the plates! which keep the plates at a, small distance: from each other, are provided, characterized in that each intermediate link consists of a single metal wire, which, parallel to the plane of the plate, is curved in a serpentine shape to form U-shaped windings is, the legs (12) of the U-shaped turns substantially parallel to the Direction of flow of the respective medium lie, the base of each U-shaped turn outside the perimeter (u) of the plates and the metal wire along the whole Lines of contact with the two adjacent plates firmly, z. B. by soldering connected is. 2. Heat exchanger according to claim 1, in which the individual plates additionally by corner plates, held together and firmly connected to them, thereby: characterized in that the corner plates (13) - also with the end faces of the ends of the outer legs (12 ") are firmly connected. 3. Heat exchanger according to claim 1 or 2, characterized in that the two legs (12 "and 12" ') of each outermost turns of the metal wires are directly next to each other. 4. Heat exchanger according to one or more of the preceding claims, characterized in that the metal wire of circular shape used as the raw material for the intermediate links Cross-section with -after production of the U-shaped turns pressed, parallel to the plate planes running flats is provided. Considered Publications: French Patent Nos. 1125 663, 1091089; U.S. Patent No. 1125 663.