EP3569958A1 - Heat exchanger - Google Patents

Abstract

Heat exchanger with a in a holding frame (1) held and composed of a plurality of superimposed tubular discs hose package (2), wherein in each case a hose (3) with planar juxtaposed wound tubing forms a tube and with at least one tube turns at a defined distance from each other positioning spacers (15), wherein the spacer (15) has a holding comb (18) with a number of retaining grooves (19) corresponding to the number of coiled hose turns, and wherein each retaining groove (19) has a positioning template (20) cooperating with the retaining comb (18). is associated with one of the number of superimposed tubular discs corresponding number of juxtaposed U-shaped recesses (21) or wherein the spacer (15) has a holding comb (18) with one of the number of superimposed tubular discs corresponding number of retaining grooves (19) and wherein each retaining groove (19) is associated with the holding comb (18) cooperating positioning template (20) having a number of juxtaposed wound hose coils corresponding number of juxtaposed U-shaped recesses (21).

Description

The invention relates to a heat exchanger with a holding frame and with at least one tube held in the holding frame. The hose is in turn wound into a spiral. The resulting by the winding hose windings must be positioned for the use of the heat exchanger at a defined distance from each other.

For this it is for example from the DE 85 27 570 U1 known to provide one or more spacers on the support frame. These spacers may for example be designed as perforated plates, wherein the holes are arranged at a defined distance from each other and through each hole a hose winding is pulled through. The threading of the tubes through the individual holes of such a perforated plate is felt to be very expensive.

From the DE 87 09 710 U1 is another holding frame for plastic hoses for use in heat exchangers known. The support frame consists of cruciform mutually arranged retaining strips. Each retaining strip consists of several by connectors in series coupled holding elements. The holding elements have beak-like openings, in which the wound into a spiral tubes can be clipped. First, the retaining strips thus constructed are not considered to be very stable. On the other hand, the construction consists of very many parts, which entails a high assembly cost.

From the US 4 167 211 A is another holding system for hoses of heat exchangers known. These are again retaining strips. However, in this system, a core tube must be welded and there is an additional housing. Also this system is considered to be less practicable due to the additional components.

Proceeding from this, the present invention seeks to design a heat exchanger so that it is easier to assemble. This object is achieved by the feature combination of claim 1 in an inventive manner. The subclaims contain in part advantageous and in part self-inventive developments of this invention.

The invention is based on the basic idea of constructing the spacer modular. This means that the spacer will not be fully assembled before the tubing turns are introduced. Rather, the spacer is made in several parts, in order to rough pre-assemble the tube coils first in the spacer in order to then finalzumontieren in their final assembly position. For this purpose, the spacer is constructed so that a retaining lug is provided for each hose winding. This eyelet is divided into two parts. In this way, the hose does not have to be threaded through the retaining eyelet, but can be laterally introduced and pre-assembled in the eyelet to be subsequently assembled by closing the eyelet in the desired final assembly position.

According to the invention, the spacer initially consists of a holding comb. The holding comb has between the individual comb teeth retaining grooves whose groove edges form the comb teeth. The number of retaining grooves on a retaining comb corresponds to the number of coiled wound hose coils of a hose disc or a hose spiral. For mounting the holding comb can be pushed so with its retaining grooves through the individual superimposed or successively arranged hose spirals or hose discs, the retaining grooves each receive a hose winding of each hose or hose coil. Alternatively, the hose discs or hose spirals can also be wound onto the respective holding comb. This can be done by machine.

To position the hose windings in their desired position to each other exists a positioning template. The positioning template has one of Number of superimposed hose discs or hose spirals corresponding number juxtaposed and U-shaped recesses. The positioning template is simply pushed for mounting above or below the holding comb in turn through the hose discs or hose spirals and then pivoted so that each U-shaped recess receives a hose winding. Considering the combination of the retaining grooves on the positioning template and the groove edges of the retaining grooves, they act together so that the groove edges of the retaining grooves close the respective opening of the U-shaped recess to a circumferential eyelet for the hose winding.

In this way it is possible, for example, to mechanize or automate the assembly of the spacers on the hose packages. It is also possible to exchange the assembly steps against each other, that is, to install the positioning templates in the first assembly step and to introduce the holding comb in the second step. In the final assembly position of the spacer of the holding comb and the positioning template are then connected together.

With the second claimed in the main claim variant it is clarified that both the holding comb and the positioning template can be introduced in each case rotated by 90 degrees with respect to the above-described construction in a hose package. It then corresponds to the number of retaining grooves in the retaining comb of the number of superimposed hose discs and vice versa corresponds to the number of U-shaped recesses in the positioning template the number of coiled hose coils wound side by side.

For further simplification, it is proposed to assemble the holding frame for the heat exchanger from pluggable elements. Particularly suitable are rods, preferably plastic rods. These plastic rods can be connected to a holding frame with sleeve-shaped corner connectors. By way of example, the holding frame can have two rectangular or square frame parts spaced apart from one another by spacer straps. Between these frame parts are then several spacers with several arranged one above the other and arranged to spirals wound tubes. Each wound into a spiral hose forms a kind of hose disc, wherein for forming a hose package a plurality of hose discs, each consisting of a coiled tubing to a spiral hose, are arranged one above the other in a horizontal support frame and a standing support frame next to each other. In order to arrange several hose packages in turn side by side, it is also conceivable to expand the holding frame by push-in sleeves with a plurality of insertion openings, such as T-shaped push-in sleeves, so that two or more support frame can be assembled into a holding frame with multiple hose packages.

In a further advantageous embodiment, the individual positioning templates can also be combined to form integral components. For example, it is possible to make a double template so that the U-shaped recesses are cut out on both sides from the long sides of a rectangular tab. In a further embodiment, it is possible to realize a comb-like positioning template with the above-described rectangular tabs with both sides cut U-shaped recesses as comb teeth. Here, the comb-like positioning template and the retaining comb are then set as it were gap to form each of the individual hose turns the enclosed eyelets.

In a further embodiment, it is also possible to store further functional parts on the support frame. In particular, distributors or collectors are provided for connecting the hose ends as a supply line or discharge into the heat exchanger.

Both the support frame and its rods as well as the spacers for the hose discs or hose coils are positively connected to each other in the invention. The items of the heat exchanger can therefore be joined together and connected by connectors. In this way, it is possible to choose the individual components of different materials and to adapt them optimally to their respective application, without having to take into account technical compatibility of the components components. The continuous use of positive and non-integral connections thus makes it possible to optimize and combine the parts with regard to their technical requirements. In the case of cohesive connections, attention should always be paid to the compatibility of the individual parts to be joined together.

Fig. 1

eine perspektivische Ansicht eines erfindungsmäßigen Wärmetauschers,

Fig. 2

eine Vorderansicht des Wärmetauschers aus Fig. 1,

Fig. 3

den Schnitt III - III aus Fig. 2,

Fig. 4

ein aus drei Halterahmen modular aufgebautes Haltegestell in horizontaler Ausrichtung,

Fig. 5

ein aus drei Halterahmen modular zusammengesetztes Haltegestell mit in Serie geschalteten Verteilern in vertikaler Ausrichtung,

Fig. 6

eine perspektivische Darstellung einer kammartigen Positionierschablone,

Fig. 7

eine Darstellung eines Haltekamms,

Fig. 8

mehrere Varianten einer Positionierschablone,

Fig. 9

die Positionierschablone aus Fig. 8 a) in ihrer auf den Haltekamm gemäß Fig. 7 aufgelegten Position,

Fig. 10

die Darstellung der Fig. 9 um 180 Grad gedreht mit auf der Positionierschablone aufliegendem Haltekamm.

Reference to the embodiments described in the drawings, the invention is explained in more detail. Show it:

Fig. 1

a perspective view of an inventive heat exchanger,

Fig. 2

a front view of the heat exchanger Fig. 1 .

Fig. 3

section III - III Fig. 2 .

Fig. 4

one of three holding frame modular built holding frame in a horizontal orientation,

Fig. 5

a modular frame composed of three holding frames with series-connected distributors in vertical alignment,

Fig. 6

a perspective view of a comb-like positioning template,

Fig. 7

a representation of a holding comb,

Fig. 8

several variants of a positioning template,

Fig. 9

the positioning template off Fig. 8 a) in her on the retaining comb according to Fig. 7 launched position,

Fig. 10

the representation of Fig. 9 rotated 180 degrees with holding comb resting on the positioning template.

The in Fig. 1 The hose assembly 2 consists in turn of seven each wound into a planar spiral hoses 3. Each wound into a spiral hose 3 forms in the terminology of the local application a hose disc. Consequently shows Fig. 1 a hose package 2 with seven in the transverse direction 4 next to each other or one behind the other arranged hose discs. Analogously shows Fig. 2 the front, overhead hose disc of the hose package 2.

The support frame 1 in turn consists of two spaced apart in the transverse direction 4 sub-frame. The subframes consist of plug-in rods 5 and pipe sockets 6. The pipe sockets 6 at the same time form the corner connectors of the two subframes forming the support frame 1. In the transverse direction 4, the two frames forming the support frame 1 are connected by a plurality of spacer plates 7 together. The spacers 7 are simply penetrated by the rods 5 in corresponding bores and hold the subframes at the desired distance in the transverse direction 4 Fig. 1 are still additional sockets 8 recognizable. These additional sockets 8 are interspersed by the rods 5 and serve for the connection of unspecified fitting parts 9, which may serve as a holder or for fixing, for example.

Finally, in Fig. 1 on both sides of the holding frame 1 each have a distributor 10 recognizable. The manifolds 10 each have a receptacle 11 for the hose end 12 each of a hose 3. The distributor 10 also have in the vertical direction 13 extending and bent at right angles pipe socket 14. Via the pipe socket 14, the distributors 10 conduct the heat transfer medium either into the hoses 3 or out of the hoses 3 and thus out of the heat exchanger.

Finally shows Fig. 1 four each offset by 90 degrees spacers 15 for the individual hose turns of the tubes. 3

Fig. 4 shows a multi-holding frame 1 modularly constructed holding frame 16. In the support frame 16, the outer two support frame 1 with the middle support frame 1 via T-sockets 17 are interconnected. In the presentation of the Fig. 4 are also the four arranged at a 90 degree distance spacer 15 indicated. The three horizontally juxtaposed in the holder 16 hose packages 2 are in the illustration of Fig. 4 , as well as in the representation of Fig. 5 omitted for simplicity.

Fig. 5 in turn shows a vertically oriented support frame 16, which in turn is composed of three connected via T-shaped sockets 17 holding frame 1 modular. In Fig. 5 Each of the three holding frame 1 is assigned a distributor 10 on both sides. The manifolds 10 are interconnected by the continuous pipe socket 14 and thus connected in series.

Fig. 7 shows finally a holding comb 18 having a plurality of juxtaposed retaining grooves 19. Each spacer 15 is composed according to the invention of such a holding comb 18 and a positioning template 20 described below.

Fig. 8d) finally shows a positioning template 20. The positioning template 20 is designed as a rectangular tab 24 and has on their long sides each U-shaped recesses 21. In the Fig. 8e) shown positioning template 20 differs from the in Fig. 8d) shown positioning template 20 only by peripheral fastening eyes 22. With the mounting bosses 22 and a corresponding pin, the positioning template 20, for example, on the support comb 18 are adapted.

The Fig. 8 a), b) and c) show comb-like positioning templates 20. The in Fig. 8c) Positioning template 20 shown in turn has fastening eyes 22. Otherwise, the in Fig. 8b) and Fig. 8c) shown positioning templates 20 identical. From the in Fig. 8 a) Positioning template 20 shown differ in Fig. 8b) and Fig. 8c) shown positioning templates 20 only by the orientation. The connecting rail 23 for the individual tabs 24 with the recesses 21 extends in Fig. 8 a) up and in 8 b) and c) below. In Fig. 6 a positioning template 20 is shown with six tabs 24. In the long sides of the tabs 24 each U-shaped recesses 21 are formed. In the presentation of the Fig. 6 and Fig. 8 are not all U-shaped recesses 21 for better readability provided with reference numerals.

The positioning templates 20 are configured in the exemplary embodiment such that a U-shaped recess 21 is provided for each hose winding of the wound hose forming the hose package 2. Based on the in Fig. 1 illustrated embodiment can be seen that a total of seven hose ends 12 are present. Thus, the hose package 2 shown in the embodiment consists of seven planar wound hoses or planar wound hose sheets. The planar wound tubular discs are arranged one behind the other in the transverse direction 4 in the holding frame 1.

At the in Fig. 9 shown positioning template 20 it can be seen that seven U-shaped recesses 21 are formed on each tab 24 on both sides. For better readability, in turn, only a few recesses 21 are marked with reference numerals. In the transverse direction 4 of the Fig. 8 perpendicularly extending horizontal direction 25 of Fig. 9 For example, the positioning template 20 has a number of rows of U-shaped recesses 21 extending in the transverse direction 4 corresponding to the number of tube coils of a single tube 3. For each of the successively lying in the transverse direction 4 hose turns of the tubes 3 thus a separate series of U-shaped recesses 21 is provided. The positioning template 20 according to Fig. 9 is inserted in the transverse direction 4 in the hose package 2. The individual hoses 3 and hose turns are each introduced into the associated U-shaped recess 21.

Subsequently, the holding comb 18 is also inserted in the transverse direction 4 in the hose package 2. From the representation of Fig. 10 it can be seen that the retaining grooves 19 on the retaining comb 18 are aligned with the U-shaped recesses 21 on the positioning template 20. Thus, the hoses 3 can enforce both the holding comb 18 in the retaining grooves 19 and the positioning template 20 in the U-shaped recesses 21. From the representation of Fig. 9 and the Fig. 10 is still recognizable that the groove edges 26, so the tines of the holding comb 18, the openings of the U-shaped recesses 21 close. The groove edges 26 complement the U-shaped recesses 21 thus to circumferential eyelets for the hoses 3. For permanently closing the Thus formed eyelets are the positioning template 20 and the support comb 18 either fixed to each other or also connected to the support frame 1. If you use the in Fig. 8b) or in Fig. 8c) shown positioning templates 20 together with the holding comb 18, the retaining grooves 19 are closed with additional, extending transversely to the retaining grooves 19 Fixierstreifen at their open ends.

The sectional view in Fig. 3 shows in the upper half of a view of the built-positioning template 20 and in its lower half the view of the built-in retaining comb 18th

The above invention is particularly suitable for heat exchangers with plastic hoses 3. In particular, the plastic hoses 3 are made of fluoroplastics and serve for supply and discharge of the heat transfer medium and the process fluid. The support frame 1 is possible also made of plastic.

The use of plastics leads to a lower weight of the heat exchanger and thus to particularly good handling properties of the heat exchanger. The individual parts are particularly well suited to compensate for changes in temperature caused by expansion or shrinkage of the hoses 3.

LIST OF REFERENCE NUMBERS

1

holding frame

2

hosepack

3

tube

4

transversely

5

Rod

6

pipe socket

7

Distance tab

8th

additional sleeve

9

fitting part

10

distributor

11

admission

12

hose end

13

vertical direction

14

pipe socket

15

spacer

16

holding frame

17

T-fit socket

18

retaining comb

19

retaining groove

20

positioning template

21

U-shaped recess

22

fastening eye

23

connecting rail

24

flap

25

Horizontal direction

26

slot edge

Claims (7)

Heat exchanger with a in a holding frame (1) held and composed of a plurality of superimposed tubular discs hose package (2), wherein in each case a hose (3) with planar juxtaposed wound tubing forms a tube and with at least one tube turns at a defined distance from each other positioning spacers (15)
characterized,
that the spacer (15) has a holding comb (18) with a number of retaining grooves (19) corresponding to the number of coiled hose coils wound side by side, and
in that each holding groove (19) is associated with a positioning template (20) which cooperates with the holding comb (18) and has a number of juxtaposed U-shaped recesses (21) corresponding to the number of tubular discs arranged one above the other
that the spacer (15) has a holding ridge (18) with a number of superimposed tube discs corresponding number of retaining grooves (19) and
in that each holding groove (19) is associated with a positioning template (20) which cooperates with the holding comb (18) and has a number of adjacently arranged U-shaped recesses (21) corresponding to the number of coiled tubing wound next to one another. Heat exchanger according to claim 1
characterized,
that in the final assembly state, the hose windings of the hose disks in the retaining grooves (19) einliegen side by side and each pass through a U-shaped recess (21) above or below the retaining groove (19) arranged positioning template (20), wherein the groove edge (26) of the retaining ( 19) in the region of the opening of the U-shaped recess (21) and the U-shaped recess (21) each form a retaining eye of the spacer (15). Heat exchanger according to claim 1
characterized,
that in the final assembly state, the hose windings of the superimposed tubular disks in the retaining grooves (19) einliegen side by side and each pass through a U-shaped recess (21) above or below the retaining groove (19) arranged positioning template (20), wherein the groove edge (26) of Holding groove (19) in the region of the opening of the U-shaped recess (21) and the U-shaped recess (21) each form a retaining eye of the spacer (15). Heat exchanger according to one of claims 1 to 3
characterized,
that the holding frame is composed of a plurality of plug-in bars (5) and pipe sockets (6) (1). Heat exchanger according to one of claims 1 to 4
marked
by a positioning template (20) cooperating with two adjacent retaining grooves (19) with U-shaped recesses (21) cut out of the long sides of a rectangular tab (24). Heat exchanger according to claim 5
marked
by tabs (24) connected to their ends to form a comb-like positioning template (20). Heat exchanger according to one of claims 1 to 6
marked
by at least one distributor (10) adapted to the holding frame (1) for connecting the ends of the hose disks as a supply line or discharge of the heat exchanger.

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