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THERMAL DEVICES, DEVICES FOR HEATING AIR AND OTHER GAS-FUEL MEDIA AND THEIR APPLICATION
INVENTION
Russian Federation Patent RU2100734

Tubingless COIL

Tubingless COIL

Name of the inventor: Karpenko Alexander Nikiforovich [UA]; Oskrit Yuri Viktorovich [UA]; Golub Valentin Antonovich [UA]
The name of the patentee: Golub Valentin Antonovich (UA)
Address for correspondence:
Starting date of the patent: 1994.06.09

Use: in the various types of heat exchangers and other structures of heating purposes, which is necessary to increase both the outer and inner surface. The inventive passages formed in the inner flanged openings in the plates are arranged ribs attached to the envelope surface of these passages and forming through channels. The through-channels can be oriented straight along the longitudinal axis of the inner passage, or along a helical path about the longitudinal axis of the inner passage. Form through channels varies along the longitudinal axis of the inner passage constancy subject area in their cross section.

DESCRIPTION OF THE INVENTION

The invention relates to finned products and can be used in a variety of heat exchangers and other thermo-engineering designs where it is necessary to increase their outer and inner surfaces, i. E. promote the development of heat transfer surfaces.

The analog of the present invention are sandwich panels (AK Kurakin Kurakin GK Production and use of bimetal and metal with protective coatings. Review of foreign technology. GOSINTI, M. 1962, p. 61-62) containing internal channels through the direction along the longitudinal axis of the panels. Such products are prepared by assembly into a set of components and their subsequent thermo-mechanical processing.

The disadvantage of this analog is then developed that only the inner surface and the outer surface has no fins due to the characteristics of its manufacturing technology, namely the outside through the load application to all components. Lack of development of the external surface in this product reduces the efficiency of heat exchange between the heat transfer media is passed through it.

As a prototype of the invention, the heat exchanger is selected (auth. St. Of N 1334027, F 28 0 7/00, F 28 F 1/32, Guoping SR Gusev VA Libkind BN and Panov VP Plate -trubny exchanger. BI N 32, 1987), comprising a stack of plates, each of which is provided with rows of openings having a flange at the perimeter of the hole belonging to the adjacent plate to form internal passages within the cavity are located ribs forming through channels .

exchanger Disadvantages of the prototype are reduced to the limitations in the development of its inner surface. Namely, due to the fact that the ribs are only internal passage forming surface on which is carried and their fixation. In turn, the surface area of ​​the generatrix has a lower limit, since it is necessary to perform flanges that form this surface. In the central region of the internal ribs are no passages, thereby reducing heat exchange efficiency. In addition, the area of ​​the through channels formed by the ribs in the inner passage varies along its length due to the specificity of these ribs, namely 7-shaped twisted inserts. This leads to uneven heating medium passing through such through-channels, which reduces the efficiency of heat exchange.

The object of the invention is to expand the nomenclature of the non-exchanger heat exchanger from comparatively inexpensive components instead of pipes having a highly developed external and internal surface to improve the efficiency of heat exchange in it.

The stated object is achieved in that pipeless heat exchanger comprising a plate package, each of which is provided with rows of holes having a perimeter flange included in the hole adjacent plate to form internal passages within the cavity are located ribs forming the through noncommunicating channels, according to the claimed invention form through channels varies along the longitudinal axis of the inner passage constancy subject area in their cross-section; straight through channels are oriented along the longitudinal axis of the inner passage; The through channels are oriented along the helical line with respect to the longitudinal axis of the inner passage; ribs are formed as a discrete insert located in the passages at a distance from each other.

The essential difference of the invention lies in the fact that in addition to highly pipeless outer surface of the heat exchanger, the presence of ribs in its inner passages across the cross-sectional area greatly increases past the inner surface of the heat exchanger. In addition, the formation by these ribs of through channels with a variable shape in their cross-section along the length of the passage broadens the range of the non-tabular heat exchanger.

In Fig. 1, 5, 7 are represented the non-fin heat exchanger, longitudinal section; FIG. 2, 3, 4, 6, 8 pipeless heat exchanger cross-section; 1 where the outer edge of the plate with a flare at her hole, 2 - inside edge of the corrugated ribbon 3 internal passage 4 through a straight channel 5 through helical channel.

The technological process of obtaining a non-rubbing heat exchanger reduces to the fact that corrugated ribbons are first assembled into a set and their joint plastic deformation, and then the deformed set is introduced into a set of plates combined along their holes with a flange. Finally, heat treatment is carried out.

The distance between the ribs or the diameter of the channels formed by these ribs can vary from a few microns to several tens of millimeters, and the number of these can reach several thousand or more.

Changing the shape of the through channel along the length of the heat exchanger area subject permanence in their cross section, and such channels and orienting along a helical line leads to turbulence in the coolant transmitted. These circumstances significantly increase the efficiency of heat exchange between the heat transfer media.

Examples of specific variants of the design of the heat exchanger pipeless following:

Example 1 . Tubingless copper plating steel heat exchanger (Fig. 1-4) contains the outer edges of the plate 1 with collars at their openings and internal ribs 2 of corrugated strips, the latter of which is formed straight through the channels 4 of 7 pcs. Permanent connection plates and strips formed by heat-treating them together until the melting temperature of copper.

Tubingless COIL

Example 2 . Copper pipeless exchanger (FIGS. 5 and 6) has inner and outer edges (1 and 2 respectively), the latter of which form helical channels 5 through 19 pieces. In this embodiment, permanent connection obtained by heat treating the components together at mutual diffusion of copper atoms.

Example 3 . Tubingless heat exchanger made of aluminum (FIGS. 7 and 8) comprises inner and outer ribs (1 and 2). In the four internal passages 3 there are through straight channels with the number 7, 7, 19 and 37 pieces. In one of the two passes, each containing 7 channels, the ribs are in the form of discrete corrugated ribbon inserts as shown in FIG. 7.

CLAIM

1. Tubingless heat exchanger comprising a plate package, each of which is provided with rows of holes having a perimeter flange for entering into the cavity adjacent the plate to form internal passages within the cavity are located ribs forming the through noncommunicating channels, characterized in that the shape of through channels varies along the longitudinal axis of the inner passage constancy subject area in their cross section.

2. Heat exchanger according to claim 1, characterized in that straight through channels are oriented along the longitudinal axis of the inner passage.

3. Heat exchanger according to claim 1, characterized in that the through channels are oriented along a helix about the longitudinal axis of the inner passage.

4. Heat exchanger according to Claims 1 3, characterized in that the ribs are formed as a discrete insert located in the passages at a distance from each other.

print version
Date of publication 26.03.2007гг