FR2576680A1 - ELBOW TUBE HEAT EXCHANGER - Google Patents

Abstract

HEAT EXCHANGER WITH ELBOWED TUBES IN WHICH TUBES 1 FORMING PINS ARE ENGAGED BY THEIR TWO ENDS IN THE SAME COLLECTOR PLATE 2 AND ARE EQUIPPED WITH HEAT SINKS 6, CHARACTERIZED IN THAT IT HAS A CORE 7 EMBEDDING AT LEAST BEND 1A OF AT LEAST ONE GROUP OF TUBES 1.

Description

The present invention relates to exchangers

  heat usable for fluid cooling

  such as circulating fluid from ther-

  mics. The invention can be implemented in those of these exchangers which are used, either only for cooling the liquid considered above, or

  also for heating the air to be introduced

  in the passenger compartment of a vehicle.

  It has been known for a long time to use bent tube heat exchangers, i.e.

  the two ends of which open into the same floor

  that collector, the tubes having the shape of a

  pin and being connected to heatsinks.

  Known bent tube heat exchangers are

  laterally difficult to fix and connect to acces

  evenings. Indeed, given that they comprise only-

  ment a collector plate, the fastening, support and / or retaining accessories can practically only be connected to the water box or to the collector plate and, consequently, the harness

  the exchanger itself is suspended and risk of

  brer, which is obviously harmful.

  The present invention relates to new means which make it possible to fix the exchanger

  by either of its ends.

  According to the invention, the heat exchanger with bent tubes in which pin-forming tubes are engaged by their two ends in the same collector plate and are provided with heat sinks is characterized in that it comprises an interlocking core at least partially the fold of at least

a group of tubes.

  Various other features of the invention

  tion appear moreover from the detailed description

following.

  Embodiments of the subject matter of the in-

  are shown, by way of non-limiting examples.

tifs, in the accompanying drawing.

  Fig. 1 is a perspective view, partly in section, of a bent tube heat exchanger making

application of the invention.

  Fig. 2 is a perspective of a nucleus ap-

  appearing partially in fig. 1.

  Fig. 3 is a partial elevation of a

exchanger illustrating a variant.

  Fig. 4 is a section seen substantially

  along line IV-IV of fig. 3.

  Fig. 5 is an elevation similar to the

fig. 3 of another variant.

  Fig. -6 is a section seen along the line

VI-VI of fig. 5.

  In the drawing, the exchanger shown comprises successive tubes 1, respectively bent, to form

  pins with parallel branches.

  The ends of the tubes 1 open into a collecting plate 2 covered by a water box 3 which forms end pieces, such as 4 and 5, for

  the arrival, respectively the evacuation, of a fluid.

  To increase the heat dissipation, the tubes 1 are connected to heatsinks 6 shown in the drawing by fins, said heatsinks being able to

  however also consist of inter-

  corrugated tubes, mainly if tubes 1 are

dishes.

  According to the invention, one has in the elbow or

  bending of the tubes a core 7, for example in material

  re molded, in particular in molded synthetic resin which comprises members 8, 9 provided to facilitate the

  fixing the heat exchanger or to support a motorcycle yen-

  ? 668C tilator, or bodies ensuring airtightness between the heatsinks 6 and a fairing or

to perform other functions.

  In the embodiment of FIGS. 1 and 2, the core 7 is shaped to delimit des.rainures used to partially fit the fold

  tubes and the members 8, 9 protrude from-by-

  parts of the core lying between the grooves 10 or

at the end of this nucleus.

  When manufacturing the exchanger, the

  core 7 is first put in place then the dissi-

  pateurs 6 are arranged between the successive tubes

  so that they come to rest on the core.

  Finally the collecting plate then the water bowl

are mounted.

  When the header plate or the

  water also has fasteners or

  core supports, these can cooperate with

organs 8, 9 of the nucleus 7.

  Fig. 3 illustrates a variant according to which-

  the core 7a is put in place as previously in the bending of the tubes 1 and this core cooperates - with a cover 11 which fits the outer part of the bending of the tubes 1 and which is connected to the core 7ao The means for ensuring the link between

  the core 7a and the cover 11 can be any

  conches, for example it may be screws, snap-on elements, glue, solder, vibration welding, etc.

  Organs, such as 9, to provide sup-

  wearing or maintaining can be trained

by the core 7a or the cover 11.

  In the realization of fig. 3 and 4, the mounting method is similar to what is described above, that is to say that the core 7a is put in place before

the heatsink 6.

  Figs. 5 and 6 illustrate a development according to which the core 7b is intended to be engaged

  inside the bend and the tubes

  after the assembly of these. In this embodiment, a cover 11a is provided which envelops the cast projection of the tubes to be fixed to the

core 7b.

  It is advantageous, as illustrated in the drawing, for the core 7b and the cover to have interlocking grooves 12 of the tubes 1 and complementary parts 13, 14, for example housings and projections ensuring the correct positioning of the core by

  relative to the cover and relative to the bundle tubes.

  The core assembly, cover or even the core alone, depending on the embodiment of FIGS. 1 and 2, can be realized to interest all the tubes of the heat exchanger

  heat or only part of it.

  The invention is not limited to the examples of

  realization represented and described in detail, because di-

  changes can be made without leaving

of his frame.

Claims (7)

  1 - Heat exchanger with bent tubes in which tubes (1) forming pins are engaged   by their two ends in the same collection plate   trice (2) and are provided with heat sinks (6), characterized in that it comprises a core (7, 7a, 7b) at least partially fitting the fold (la) of minus a group of tubes (1).   2 - Exchanger according to claim 1, characterized in that the core has members (8, 9) for the support, the maintenance, the centering or a   another function concerning the exchanger.   3 - Exchanger according to one of claims   1 or 2, characterized in that the core (7) has grooves (10) for partially fitting the fold (la) of the successive tubes (1) o   4 - Exchanger according to one of claims   1 to 3, characterized in that the core (7, 7a) is placed in the fold (la) of the tubes before mounting heatsinks (6).   - Exchanger according to one of the claims   1 to 4, characterized in that the core (7a, 7b) cooperates with a cover (11, lla) fitting outwardly at least some of the tubes (1).   6 - Charger according to one of the claims   1 to 5, characterized in that the core (7b) conforms so that it can be engaged between the bend (la) of the tubes (1)   and the dissipators (6) previously installed, the   said core being held by its cover (1la).   7 - Exchanger according to one of claims   1 to 6, characterized in that the cover (lla) and the core (7b) which can be put in place after the mounting of the heatsinks have complementary parts   ensuring their mutual positioning as well as port to the exchanger tubes.   8 - Exchanger according to one of claims   1 to 7, characterized in that the core (7a, 7b) is connected   to the cover (11, 11a) by means known in the art   that, for example by screwing, snap-fastening, welding, soldering.