JPS59229185A - Heat exchanger - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] <Industrial Field of Application> The present invention relates to a heat exchanger, and more specifically, to a heat exchanger based on the technical field set forth in claim 1, particularly on the driver's seat side and passenger side of a cabin of a passenger car. This relates to a heat exchanger that independently heats the air.

PRIOR ART Heat exchangers are known in which two separate heating cycles pass through a common heat exchanger (German Published Application No. 15515).
No. 09). In order to prevent one heating cycle from being affected by the other heating cycle, gaps are defined by providing slits in the rib blocks stacked at intervals and forming a single puncture. The heat exchange ribs of the two cycles are separated from each other by. This type of heat exchanger has the disadvantage that the two heating cycles cannot avoid influencing each other to some extent. Another disadvantage is that the heat exchanger body has only one pipe through which the heating medium flows, and therefore both sides must be connected to the heating cycle. This also applies if heating elements of this type are equipped with a large number of pipes.

Furthermore, heat exchangers of the type mentioned at the outset are also known in which, for structural reasons, a connection end is provided only on one side. Both the intake and return connections are then provided in the upper water container, and the lead pipe emerges from a central gap separated by a bulkhead in the upper water container and passes through a common inner part to the lower water container. You will be led to a water container. Such a structure also has the disadvantage that the heating cycles influence each other.

<Problems to be Solved by the Invention> Therefore, the problem of the present invention is to eliminate this thermal influence.

Means for Solving the Problems In the case of a heat exchanger of the type mentioned at the outset, the invention employs an arrangement in which the lead pipes run through the ribs and into the water container below without contact. This leading to no kissing is done in the following way.

That is, the diameter of the through hole formed in the rib in the common inner portion, through which the lead pipe passes, is made larger than the diameter of the lead pipe.

<Effects of the Invention> Forming in this way has the advantage that the compact structure of the Pipe Rib Pro 7 can be maintained and that conventional tools can be used for manufacturing.

In this type of construction, the relatively cold part of the water container above the return pipe is hardly affected by the hot lead pipe. This is because the heat exchanger ribs are not touched at all.

However, it is also possible to form the common inner part as a gap between the blocking walls provided at the mutually opposite ends of the ribs of the two pipe rib blocks. A barrier of this type can be formed in a simple manner from the ends of adjacent ribs which are bent to one side and overlap one another in the form of ridges. This embodiment has the advantage that the lead pipe is completely separated from the rib. In order to prevent the passing air from heating up in the lead pipe and transferring this heat to the ribs or barrier walls, it is advantageous to provide a cover on the side of the common inner part into which the air enters.

Of course, in order to avoid shortening the heat exchange surface unnecessarily, the gap between the barrier walls of the ribs or the area through which the lead pipe passes and which is covered on the inlet side is kept as small as possible. In this regard, it is also possible to combine the gap between the rib barrier walls through which a part of the lead pipe passes, with the lead pipe guided through a larger diameter hole at the end of the rib. .

This makes it possible to keep the space between the separated heat exchangers as small as possible, which does not contact the ribs and therefore does not participate in heat exchange, and the risk of heat influence by the lead pipes does not become too great.

The cover provided on the air inflow side of the gap or portion of the lead pipe can be fixed to the lead pipe in a very simple manner. In the case of embodiments in which the lead pipe passes through the gap between the rib bodies, the cover is formed from a plate corresponding to the height of the pipe rib body, and the lead pipe is closed, preferably laterally, by means of a protruding seam plate. It can be attached and fixed by fastening.

In order to prevent heat transfer between adjacent pipe ribs as much as possible when the assembly space is kept as small as possible, the area necessary for connecting the upper and lower water vessels with the lead pipe should be minimized as much as possible. To keep it small, a preferred embodiment of the invention allows the lead pipe to have a larger diameter than the return pipe. This embodiment has the advantage that a compact structure of the pipe rib block can be maintained. Relatively large lead pipes are completely separated from the ribs by a common gap between the pipe rib blocks, defined in a simple manner by the ends of the adjacent ribs bent to one side and with overlapping ridges. This gives you the advantage of being able to pass through. According to this embodiment, two lead pipes can be provided one after the other in the direction of air flow. This is because the through-flow cross-sectional area of the lead pipe and the total return cross-sectional area correspond. Thereby, the gap between the pipe rib blocks can be optimally reduced. Since the air inflow direction of this gap is closed by the cover,
It can be ruled out that both pipe ribs are influenced by the heating of the air flowing through at the lead pipe.

<Example> Hereinafter, the present invention will be described in detail based on the example shown in the drawings.

What is schematically shown in FIGS. 1 and 2 is a heat exchanger consisting of two independent pipe ribs 1.2 of conventional construction; The broth is attached to an upper common water container 3 and a lower common water container 4.

The pipe rib blocks 1 and 2 are composed of a large number of pipes 5 leading from the upper water container 3 to the lower water container 4, and only the upper connection points are clearly shown, and here the pipes 5
is inserted tightly into the bottom 6 of the upper water container 3.

The upper water container 3 is further subdivided by two partitions 7 into two outer chambers 8,8', between which a gap 9 is defined, in which the connecting sleeve 1
0 is used to connect a heating medium (motor cooling water in this embodiment) used for heating.

Some of the pipes 11 and 12, which are connected to the bottom 6 of the upper water container 3, open into the gap 9 and are therefore used as lead pipes for hot water. One of the lead pipes 11 and 12 opens into the left chamber 4a of the lower water container 4, and the other lead pipe 12 opens into the right chamber 4b of the lower water container 4.

These two rooms 4a, 4b are separated from each other by a partition wall 13. Therefore, the hot water flowing through the sleeve 10 is divided into two tributaries, of which the one flowing through the lead pipe 11 flows through the pipe rib block 1, and the one flowing through the lead pipe 12 flows through the pipe rib block 2. The intake water flow directed in the direction of the arrow 14 is therefore divided into two water tributaries ff115, 16 and discharged again from the return connection sleeves 17 and 18 in the direction of the corresponding arrow in the figure. The two pipe rib blocks 1 and 2 themselves are constructed in a known manner from pipes 5 extending parallel to each other, each of which is connected with a flat rib 19 perpendicular to the pipes 5. There is. The air flows through the pipe rib blocks 1゜2 in the direction of the arrow 20, and is divided into two tributaries 22 and 23 by a guide device 21 behind the heat exchanger, respectively, to regulate the amount of water passing through the pipe rib blocks 1 and 2. heated to various temperatures by Of course, instead of providing one water intake sleeve 10 for water intake, it is also possible to provide two separate sleeves, adjust the amount of heating means from the water, and prevent the heating means flowing through them from influencing each other. . Of course, it is also possible to adjust the heating with respect to the amount of air flowing through. However, this method of regulation is not included in the scope of the present invention.

Pipe rib block 1.2 by hot lead pipe
In order to prevent heat from being transferred in the upper part to the rib 19 and thus to the air flowing through it, as is clear from FIG. However, it is guided through a through hole 24 which has a larger diameter than the pipes 11-12. In this way, the lead pipes 11 and 12 pass through the central inner portions 25 of the two pipe rib blocks 2 without contacting each other. Therefore, these pipes are
The insulating effect of the air gear between the pipe and the rib 19 prevents contact heat from being imparted to the rib. Nevertheless, the air flowing through in the direction of arrow 20 (which absorbs heat from lead pipes 11 and 12 and
9), a predetermined influence appears, so the third
As shown in the figure, a cover 2 is attached to the inner portion 25 where the lead pipes 11 and 12 pass through the pipe rib protrusions 1 and 2.
6 may be provided. It can further be seen from FIG. 3 that the lead pipes 11 and 12 are not provided with a turbulence device, but the return pipe 5 is provided with a turbulence device 27 of this type. Therefore, since the flow resistance of the return pipe 5 is basically greater than the flow resistance of the lead pipes 11 and 12, it is sufficient to use a smaller number of lead pipes than the return pipes. However, this turbulence device 27 is also used in a known manner to improve the heat transfer from the return pipe 5 to the rib 19 and the air flowing through it accordingly.

In the embodiment shown in FIG. 3, the air flow through the inner part 25 is very low, as can be seen from the arrow 20. Undesirable effects of temperature layers occurring from bottom to top in the pipe rib blocks 1 and 2 and mutual influence of the two heating cycles are thus avoided.

The one shown in FIG. 4 is a variant, in which the lead pipes 11' and 12' are not led through the cutout in the rib 19, but instead are guided through two pipe rib blocks or 2.
is guided through a gap 28 between the respective mutually opposed outer ends of the ribs I9. As is clear from FIG. 5, each of these outer ends is bent toward one side, and furthermore, the outer ends 2 of the two adjacent ribs 9 are bent toward one side.
9 overlap each other in a ridge shape.

A blocking wall 30 is thereby formed on both sides of the gap 2, which allows the area between the ribs 19 to be separated from the area indicated by the arrow 20.
Directly flowing air is prevented from entering the gap 28. A cover 3 is further provided on the side of this gap 28 from which the air flows.
1 may be provided, and in this embodiment, in a very simple manner, this cover connects the notches 33 of the protruding joint plate 32 to the outermost lead pipes 11' and 12', respectively. It can be attached by fastening it to. Therefore, if this cover 31 is formed into a plate shape with the same height as the pipe rib blocks 1 and 2, the entire gap 28 can be covered against the flow through. The lead pipes 11' and 12' therefore do not have any temperature influence on both heat exchangers. Blocking wall 30 shown in FIG.
has a significantly elongated shape. This barrier wall may, of course, also consist of two partial walls that intersect at an angle, as indicated by the dotted line 30'. It is easy to form the outer ends of the ribs in this way. In that case, the cover 31 must be made wider accordingly.

In the embodiment shown in FIG. 6, the lead pipes 11 to 11' and 12, 12' are of the same diameter as the return pipe 5. Here, the lead pipe consists of two pipes 34 or 35 with a cross-section essentially larger than the diameter of the return pipe, one of which is connected to a compartment similar to, for example, the chamber 4a of the water container 4 shown in FIG. and the other is connected to the branch chamber 4b. This is achieved by forming the bulkhead 13 not as a straight wall in the type and manner shown in FIG. It is being said. This partition 36, which has a wall section extending between the lead pipes 34 and 35 perpendicular to the air flow direction 20, allows both lead pipes 34 and 35 to be arranged one after the other in the air flow direction, and Two separate heating cycles can be realized. This embodiment is also provided with a rib 19 having a bent outer end 29 as shown in FIG. A gap 28' is formed in the gap 28'. A cover 37 may be provided on the air inflow side of this gap 28', and this cover 3
7 is attached to the front lead pipe 35 via a joint plate 38 in the same manner as the cover 31. The cross-sectional area of the larger diameter lead pipes 34 and 35 is balanced with the total return cross-sectional area, ie the cross-sectional area of the return pipe 5.

What is shown in FIG. 7 is a combination of the embodiment shown in FIG. 3 and the embodiment shown in FIG. That is, here some lead pipes 11' have larger diameter through holes 24'.
It is guided through the ribs 19 through. The other lead pipes, namely lead pipes 11'' and 12''', extend freely within the gap 28'' formed between the blocking walls 30', parts of which extend parallel to each other; It is partially composed of surface sections that are at an angle to each other.A cover 39 prevents air from flowing through the gap 28''. In this embodiment, the area used for heat exchange is increased by 40 minutes in four sections compared to the heat exchange area of the embodiment shown in FIG. This part 4
0 is indicated by the blocking wall 30' and the dotted line 41, respectively.
This corresponds to the wall 30' of the 4Mth embodiment.

[Brief explanation of the drawing]

Fig. 1 is a schematic perspective view of a water/air/heat exchanger according to the present invention used to heat both sides of a passenger cabin of a passenger car, and Fig. 2 is a part of a part connecting motor cooling water used as a heating medium. FIG. 3 is a schematic enlarged sectional view taken along the line m-m of FIG. 2, FIG. 4 is a schematic enlarged sectional view of another embodiment similar to FIG. 3, and FIG. 4 is a schematic partial longitudinal cross-sectional view taken along line V-V in FIG. 4; FIG. 6 is a schematic partial cross-sectional view of another embodiment similar to that in FIG. 4 is a schematic partial sectional view of another embodiment similar to FIG. 3; FIG. 1.2... Pipe rib broth, 3... Upper water container, 4... Lower water container,
5...pipe, 6...bottom, 7...
・Bulkhead, 8.8'...outer room, 9...
・Gap, 10...Water intake sleeve, 11, 12...
Lead pipe, 13... bulkhead, 14... arrow direction,
15.16... Water supply amount, 17, 18... Return connection sleeve, 19... Rib, 20... Arrow direction, 21... Guide device, 24... Through hole,
25... Inner portion, 26... Cover, 27... Turbulence device, 28... Gap, 29... Outer end, 30... Blocking wall, 31... Cover, 32...・・Joint plate,
33...notch, 34, 35...
Lead pipe, 36... Partition wall, 37... Cover, 38... Joint plate, 39... Cover, 40... Part. Patent applicant Patent attorney Akira Aoki Patent attorney Kazuyuki Nishidate Patent attorney Kyosuke Donakayama Patent attorney Akira Yamaguchi Patent attorney Masaya Nishiyama Continued from page 1 Priority claim @ May 18, 1983 ■ West Germany (D.E.
) [Yes] P3317983.2 (l Author: Albert Strück, Federal Republic of Germany, Wada 7400 Tübingen Lindenstrasse 5 ■Applicant: Daimler-Benz Akchengesellschaft, Federal Republic of Germany 7000 Stuttgart 60, Mercedes Strasse 136

Claims (1)

[Scope of Claims] 1. It has two biply valves which are separated from each other but attached to a common upper and lower water container, through which the heating medium, in particular motor cooling water and air, respectively, flow. Each pipe rib block includes a number of parallel pipes and ribs perpendicular to the pipes, the upper water container is provided with a water intake sleeve and a return sleeve,
A lead pipe emerges from a central gap separated by a bulkhead in an upper water container, passes through a common interior portion, and extends to a lower water container, particularly on the driver and passenger sides of a passenger car passenger compartment. A heat exchanger for heating and heating, characterized in that the lead pipes (11, 12, 11', 12', 11'', 12'') are led through the ribs (19) without contact. 2. A through hole (11, 12) for passing the lead pipe (11, 12) provided in the rib (19) in the common inner part (19).
24) has a larger diameter than the lead pipe. 3. The common inner part (25) is located at the mutually opposite ends (
The heat exchanger according to claim 1, characterized in that the gap (28) is between the blocking walls (30) provided in the heat exchanger (29). 4. Claim 3, characterized in that the blocking wall (30) is formed from end portions (29) of adjacent ribs (19) bent in one direction and having roofs overlapping each other in a straw-like manner. Heat exchanger as described in Section. 5. Any one of claims 1 to 4, characterized in that a cover (26, 31, 37, 39) is provided on the air inflow side of the common inner portion (25). The heat exchanger according to item 1. 6. The cover (31, 37, 39) provided on the air inflow side of the gap (28, 28', 28'') is fixed to the lead pipe (11', 12' to 35). 7. The heat exchanger according to any one of claims 3 to 5. 7. The cover (31, 37, 39) is at the height of the pipe rib prosock (1, 2). The corresponding plates (32, 38) are connected to the lead pipe (11').
, 12', 35). The heat exchanger according to claim 6, wherein the heat exchanger is fixed to the heat exchanger according to claim 6. 8. The joint plate (32, 38) is made of an elastic material, has a notch (33) open on one side, and is attached to the lead pipe (11', 12' to 35) from the side;
8. Heat exchanger according to claim 7, characterized in that it is fastened. 9. Lead pipe (11, 11', 12.12'
9. Heat exchanger according to claim 1, characterized in that the return pipe (5) has the same cross-sectional area as the return pipe (5). 10. Lead pipes (34, 35) are return pipes (5)
Heat exchanger according to claim 1, characterized in that it has a cross-sectional area larger than . Only 1162 lead pipes (34, 35) have the same diameter and are arranged in the gap (28') between the biply ribs (1', 2) one after the other in the direction of air flow, and Heat exchanger according to claim 10, characterized in that the partition wall (36) extends across the gap (28') between the lead pipes (34, 35) in the water container (4) of the vessel. 12. The gap (28') is defined by a gIIfi wall (30), the blocking wall being formed from the ends of the adjacent ribs (19) bent towards one side and overlapping each other in a straw-like manner. The heat exchanger according to claim 11, characterized in that: 13. A cover (37) is provided on the side of the gap (28') where the air (20) flows in, and the protruding joint plate (38) of this cover is fixed to the front lead pipe (35). A heat exchanger according to any one of claims 10 to 12, characterized in that: