EP2810005B1 - Multi-shell wall module for a housing and apparatus for controlling the temperature of objects - Google Patents

Description

The invention relates to a multi-wall module according to the preamble of claim 1.

In addition, the invention relates to a device for controlling the temperature of objects with a housing in which a Temperiertunnel is housed.

Such devices are used, for example, in the form of dryers to dry articles or coatings that have been applied to the articles. Coatings may e.g. Be paints. For this purpose, the objects are conveyed by means of a conveyor system through the tempering tunnel, in which a temperature prevails, which is increased relative to the temperature in the vicinity of the device. Optionally, tempering can also mean that the temperature in the tempering tunnel is reduced relative to the temperature of the environment.

To keep heat losses from the tempering tunnel as low as possible and the energy efficiency of the dryer high, the housing of the dryer is thermally insulating.

From the DE 92 07 573 U1 is a clam-shell, heat-insulating cladding panel is known, which has two mirror-symmetrically arranged rectangular metal sheets, between which a heat-insulating filling is arranged and which are provided on all four sides with folded edge strips. The edge strips facing each other are connected to each other by profiled strips which extend over the entire side length.

In known from the market devices for tempering objects, it has been proven to build the housing of clam shell wall modules of the type mentioned, in which the wall interior is filled with a thermal insulation material. As connecting devices there are used connecting plates in the form of sheet metal plates, which are welded at opposite edges to the first and the second shell element of the wall module, which are made in this case of a steel sheet.

About the connecting plates, however, a thermal bridge between the two shell elements is formed, through which the warmer, the Temperiertunnel facing shell element can deliver heat to the cooler, outer shell element. This heat is then released from the outer shell member of the housing to the atmosphere surrounding the dryer.

In order to reduce the heat transfer via the connecting devices, grid sheets in the form of labyrinth-like punched grid plates are used in other known wall modules, in which the total cross-sectional area is significantly smaller than in connection plates. However, even here there is still a considerable heat transfer between the inner and outer shell elements, which are based on the tempering tunnel, as a result of which the thermal insulation effect of the wall module and of the housing as a whole is smaller than is desirable.

It is therefore an object of the invention to provide a wall module and a device of the type mentioned, in which a better insulation effect can be achieved.

This object is achieved in a multi-wall module with the features of claim 1.

A largely thermal decoupling of the first and the second shell element is possible in that a thermally insulating connecting member between the first and the second shell element is provided as part of the connecting device. By such a thermally insulating connecting member, the heat transfer between the first and the second shell member against a grid plate or the like is again significantly hindered, so that it can lead to a significantly lower overall heat exchange between the first shell element and the second shell element. As a result, less energy must be applied to build and maintain the target temperature in the tempering tunnel, which improves the overall energy balance of a device with the wall modules.

In principle, all thermally insulating materials, such as plastics, ceramics, mineral substances, glass materials or the like, are suitable for the connecting member. However, the thermally insulating connecting member is preferably formed from a plastic.

Good insulation results could be achieved in practice if the plastic is polyvinylidene fluoride PVDF. But other plastics with a thermally insulating effect can be used.

In order to save high-quality material, it is advantageous if the at least one connecting device comprises at least one coupling unit, via which the connecting member is connected to one of the wall shells. Such a coupling unit may for example be formed of a steel sheet which is connected on one side with a shell element and on an opposite side with the connecting member.

It is particularly advantageous if the first coupling unit with the first wall shell and the second coupling unit are connected to the second wall shell. In this case, the connecting link sits quasi between two coupling units, which are largely thermally decoupled from each other by the connecting member.

With regard to the attachment of the components to each other, it has proven to be advantageous over types of fastening such as screwing, gluing, riveting or the like, if at least one coupling unit is designed as a clamping unit and is connected by clamping with the connecting member. Such a clamp fastening can be established with simple tools and in a simple manner during the assembly of the wall module, by e.g. a steel sheet is bent around the connecting member.

In order to again save material in the coupling units, it is advantageous if, in a connecting device of a first type, the at least one coupling unit as a connecting means to a wall shell comprises at least one connecting web. Such a connecting web is relatively narrow. This also reduces heat transfer in the direction of the connecting member.

Optionally, however, the rigidity of the connecting device at certain points of the wall module is not sufficient if the connecting means are designed in the form of narrow connecting webs. In this case, it is favorable if, in a connecting device of a second type, the at least one coupling unit as a connecting means to a wall shell comprises at least one coupling plate. A coupling plate can have a greater bending and torsional stiffness than a connecting web, whereby the overall stability of the wall module is increased.

In general, it is favorable for a good insulating effect of the wall module if a thermally insulating material is arranged in the wall interior.

In a device of the type mentioned, the above object is achieved in that

the housing comprises at least one multi-walled wall module with some or all of the features explained above, as indicated in the claims.

The advantages achieved thereby correspond to the advantages explained for the wall module.

Figur 1

schematisch eine perspektivische Ansicht eines Trockners zum Trocknen von Gegenständen mit einem aus zweischaligen Wandmodulen gebildeten Trocknergehäuse;

Figur 2

Ansicht auf eine Schmalfläche eines zweischaligen Wandmoduls, so dass Verbindungseinrichtungen einer ersten Art und Verbindungseinrichtungen einer zweiten Art zu erkennen sind, welche zwei Schalenelemente des Wandmoduls miteinander verbinden;

Figur 3

eine Draufsicht auf ein thermisches Isolationsglied der Verbindungseinrichtungen nach Figur 2;

Figur 4

eine Draufsicht auf ein Klemmblech in einer Ausgangskonfiguration für das Isolationsglied für eine Verbindungseinrichtung der ersten Art;

Figur 5

eine Draufsicht in teilweiser Durchsicht auf eine Verbindungseinrichtung der ersten Art;

Figur 6

einen Schnitt der Verbindungseinrichtung der ersten Art entlang der Schnittlinie VI-VI in Figur 5;

Figur 7

einen Schnitt der Verbindungseinrichtung der ersten Art entlang der Schnittlinie VII-VII in Figur 5;

Figur 8

eine Draufsicht auf ein Klemmblech in einer Ausgangskonfiguration für das Isolationsglied für eine Verbindungseinrichtung der zweiten Art;

Figur 9

eine Draufsicht in teilweiser Durchsicht auf eine Verbindungseinrichtung der zweiten Art;

Figur 10

einen Schnitt der Verbindungseinrichtung der zweiten Art entlang der Schnittlinie X-X in Figur 9;

Figur 11

einen Schnitt der Verbindungseinrichtung der zweiten Art entlang der Schnittlinie XI-XI in Figur 9.

Embodiments of the invention will be explained in more detail with reference to the drawings. In these show:

FIG. 1

schematically a perspective view of a dryer for drying objects with a dryer housing formed of clam-shell wall modules;

FIG. 2

View on a narrow surface of a clam shell wall module, so that connecting means of a first type and connecting means of a second type can be seen, which connect two shell elements of the wall module together;

FIG. 3

a plan view of a thermal insulation member the connecting devices after FIG. 2 ;

FIG. 4

a plan view of a clamping plate in an initial configuration for the insulating member for a connecting device of the first type;

FIG. 5

a plan view in partial view of a connecting device of the first type;

FIG. 6

a section of the connecting device of the first type along the section line VI-VI in FIG. 5 ;

FIG. 7

a section of the connecting device of the first type along the section line VII-VII in FIG. 5 ;

FIG. 8

a plan view of a clamping plate in an initial configuration for the insulating member for a connecting device of the second type;

FIG. 9

a plan view in partial view of a connecting device of the second type;

FIG. 10

a section of the connecting device of the second type along the section line XX in FIG. 9 ;

FIG. 11

a section of the connecting device of the second type along the section line XI-XI in FIG. 9 ,

In FIG. 1 is shown as an example of a device for controlling the temperature of a dryer 10, which includes a housing 12 which defines a tempering tunnel 14. With the dryer 10 not specifically shown items or a coating applied to this are dried in the present case.

The interior of the tempering tunnel 14 is divided by two vertical longitudinal walls 16, 18 into two lateral pressure chambers 20, 22 and an intermediate central drying tunnel 24. The objects to be dried are conveyed through the drying tunnel 24 by means of a transport system, which is likewise not specifically shown. On the front sides of the drying tunnel 24 locks are generally provided, which allow the passage of the articles into the drying tunnel 24 in and out of this without much heat loss and with little exchange of atmosphere.

The pressure chambers 20, 22 are fed in a known manner with tempered air, which is then passed in a likewise known manner in the longitudinal walls 16, 18 existing nozzle passages on the objects to be dried.

The housing 12 of the dryer 10 is constructed of individual wall modules 26 which are formed as a wall cassette and of which in FIG. 1 only a few are provided with a reference numeral. FIG. 2 shows such a wall module 26 with a view of one of its narrow surfaces. As can be seen there, each wall module 26 is formed with two shells and comprises as the first shell element a first wall shell 28 and second shell element as a second wall shell 30. The two wall shells 28 and 30 are for example made of sheet steel.

The wall shells 28 and 30 are identical and are folded over at one edge to a groove profile 32 and at this opposite edge to a spring leaf 34. The two wall shells 28 and 30 are arranged mirror-symmetrically to each other in the finished wall module 26 and spaced from each other, so that on the one hand between the wall shells 28 and 30 a wall interior 36 remains and on the other hand at an edge of the wall module 26 a receiving groove 38 and on the opposite side a complementary plug-in spring 40 is formed, as in FIG. 2 easy to recognize. In this way, a plurality of wall modules 26 can be plugged together to form a housing wall, a housing bottom or a housing cover. This is known in and of itself, which is why this need not be discussed further.

The first and the second wall shell 28 and 30 of a wall module 26 are designed differently in a manner known per se such that the first wall shell 28 defines the inside and the second wall shell 30 defines the outside of a wall module 26.

The wall interior 36 and the cavities of the groove profiles 32 of each wall module 26 are now filled with a thermal insulation material 42, so that a wall module 26 and thereby the housing 12 constructed therefrom overall thermally insulating designed to minimize heat loss from the Temperiertunnel 14. As insulating material 42, for example, mineral wool can be used. Overall, the housing 12 is formed in this way as a thermally insulating, two-shell housing. Depending on the size of a wall module 26 and / or the housing 12 may also be a complete side wall, the bottom or the ceiling of the housing 12 each formed of a single wall module 26.

In each wall module 26, the wall shells 28 and 30 are connected to each other by means of connecting means 44 of a first type and connecting means 46 of a second type and fixed in their desired relative position against each other.

The connecting means 44 of the first type connect the wall shells 28, 30 along the edges 48, between the respective groove profile 32 and the spring leaf 34 extend; this is in FIG. 2 to recognize in plan view. The connecting means 46 of the second type connect the wall shells 28, 30, however, along the edges 50, on which the respective groove profile 32 is formed, and along the edges 52, on which the respective spring leaf 34 extends. Accordingly, connecting devices 46 of the second type are shown in FIG FIG. 2 to recognize in a side view.

In the FIGS. 3 to 7 Now, a connecting device 44 of the first type is illustrated in detail. This includes a in FIG. 3 separately shown thermally insulating connecting member 54, which is hereinafter referred to as insulating member 54. The insulating member 54 is plate-shaped in the present embodiment and constricted symmetrically in two clamping regions 56, so that a total of four clamping grooves 58 are formed. Each two of these clamping grooves 58, which are provided on two opposite edges of the insulating member 54, each cooperate with a first and second coupling unit in the form of a respective clamping unit 60 made of sheet steel, wherein a marked with 60a first clamping unit with the first wall shell 28 and a 60b designated second clamping unit is connected to the second wall shell 30 of the wall module 26. The insulating member 54 is made of a thermally insulating material; In practice, a plastic has proven suitable for this, in particular polyvinylidene fluoride PVDF comes into question. But other plastics with a thermally insulating effect can be used.

FIG. 4 shows a clamping unit 60 in an initial configuration, as it exists, before the two wall shells 28 and 30 of a wall module 26 are connected together. How out FIG. 4 As can be seen, the clamping unit 60 comprises as a connecting means the wall shell 28 or 30 two parallel connecting webs 62, which at two adjacent ends in a clamping strip 64, which extends transversely to the connecting webs 62 and two opposing bendable clamping ends 66 provides. These clamping ends 66 are formed complementary to the clamping grooves 58 of the insulating member 54.

In the mounted state, the clamping strips 64 of the clamping units 60 are now in each case flat on one side of one of the two clamping regions 56 of the insulating member 54, wherein the respective connecting webs 62, starting from the clamping strip 64 in a direction away from the insulating member 54. The clamping ends 66 of the clamping units 60 are through the clamping grooves 58 of the insulating member 54 therethrough on the other side of the insulating member 54 and further folded over there so that they embrace the clamping region 56, as shown in FIGS FIGS. 5 to 7 is apparent. The folded end portions of the clamping ends 66 are in FIG. 5 to be seen through and in the FIGS. 5 to 7 designated 66a.

In this way, the clamping units 60 are firmly connected by clamping with the insulating member, wherein there is no direct contact of the two clamping units 60 together.

Like back out FIG. 2 shows the connecting webs 62 of the clamping units 60 open at their remote from the terminal strip 64 ends each in a connecting plate 68, so that in each case a connecting plate 68 with a plurality of clamping units 60 forms a one-piece coupling group 72. Of these coupling groups 72 is one of the connecting plate 68 with the edge 48 of the first wall shell 28 and the other via the connecting plate 68 with the edge 48 of second wall shell 30, which is indicated by welding points 70, of which, however, only a few bear a reference numeral.

When constructing a wall module 26, for example, an assembly can be preassembled, which is composed of a coupling group 72 for the first wall shell 28 and a coupling group 72 for the second wall shell 30, the clamping units 60 are already jammed with the associated insulation members 54. This assembly is then connected in the manufacture of the wall module 26 with the edges 48 of the wall shells 28, 30.

In a modification not specifically shown here, the free ends of the connecting webs 62 of the clamping units can each be connected directly and not via the connecting plate 68 to the edge 48 of the first and the second wall shell 28 and 30, respectively.

In the FIGS. 8 to 11 Now a connection device 46 of the second type is illustrated in detail. Also this includes the in FIG. 3 Its clamping grooves 58 work together again in a manner with two coupling units in the form of clamping units 74 made of sheet steel, which corresponds to the action of the clamping units 60 of the connecting device 44 of the first type. Accordingly, a first clamping unit 74a with the first wall shell 28 and a second clamping unit 74b with the second wall shell 30 of the wall module 26 is also connected by the clamping units 74.

FIG. 8 now shows a clamping unit 74 in an initial configuration, as it exists, before the two wall shells 28 and 30 of a wall module 26 are connected together. How out FIG. 8 As can be seen, the clamping unit 74 comprises as Connecting means no connecting webs 62, but a coupling plate 76, which merges at an edge in the clamping strip 64 with the opposite bendable clamping ends 66.

Again, the clamping strips 64 of the clamping units 74 are in the assembled state in each case flat on one side of one of the two clamping regions 56 of the insulating member 54. The respective coupling plate 76 extends, starting from the clamping strip 64 in a direction away from the insulating member 54. The clamping ends 66 of the clamping units 74 are through the clamping grooves 58 of the insulating member 54 therethrough on the other side of the insulating member 54 and further folded over there so that they embrace the clamping region 56, as shown in FIGS FIGS. 9 to 11 is apparent.

In this way, the clamping units 74 are fixedly coupled to the insulating member 54, wherein there is no direct contact of the two clamping units 74 with each other here.

Like back out FIG. 2 shows, the coupling plates 76 of the clamping units 74 are in the region of the groove profiles 32 of the first and second wall shell 28, 30 fixed directly to the edges 50 and there on the groove bottom of the trainees receiving groove 38. At the opposite edge of the wall module 26, the coupling plates 76 of the clamping units 74 in the spring leaves 34 of the first and second wall shell 28, 30 are fixed directly to the edges 52 and there at the foot of the trainees spring 40 to be formed. The connection points are again indicated by welding points 70.

Through the coupling plates 76, the clamping units 74 of the connecting means 46 of the second type are more rigid than the clamping units 60 of the connecting devices 44 of the first type, in which instead of the narrower connecting webs 62 are present.

Both by the connecting means 44 of the first type and by connecting means 46 of the second type is achieved in a wall module 26 that the first wall shell 28 is thermally insulated by the insulating members 54 against the second wall shell 30.

If the wall modules 26 are installed in the housing 12 of the dryer 10 and this is operated, form the connecting means 44, 46 between the wall shells 28, 30 unlike prior art connecting devices no more thermal bridges, via which heat from the tempering tunnel 14th facing inner wall shell 28 of a wall module 26 can be discharged on the remote from the tempering tunnel 14 outer wall shell 30. As a result, heat losses from the temperature control tunnel 14, which is caused by the heat transfer from the inner wall shell to the outer wall shell of the housing 12, largely prevented.

With the connecting means 44 of the first type also horizontal strains of the inner warmer wall shell 28 are compared with the then outer colder wall shell 30 compensated in the direction of a well-known manner in itself Dehnstoßes.

By the overall stiffer connection means 46 of the second type also the vertically acting weight of a total formed by the inner wall shells 28 inner housing is then derived from the then formed by the outer wall shell 30 outer housing, whereby the wall interior 36 is maintained even when acting forces.

Claims (8)

1. Multi-shelled wall module for a housing in which a tempering tunnel is placed, including a first shell element (28) and a second shell element (30 being connected to one another by at least one connecting device (44; 46) in such a way that a wall interior space (36) is formed in between the two shell elements (28, 30),
   wherein
   the connecting device (44; 46) includes a thermally isolating connecting member (54); and
   at least one coupling unit (60a, 60b; 74a, 74b) is formed as a clamping unit and is connected to the connecting member (54) by clamping, and
   the at least one connecting device (44; 46) includes at least one coupling unit (60a, 60b; 74a, 74b), over which the connecting member (54) is connected to one of the wall shells (28, 30);
   characterized in that
   the connecting member (54) comprises four clamping grooves (58) which each define a clamping area (56) and of which two clamping grooves (58) each cooperate with a first and a second coupling unit (60a, 60b; 74a, 74b), respectively;
   the coupling units (60a, 60b; 74a, 74b) comprise at least one clamping strip (64, 66) which is complementary to the clamping groove (58) in such a way that it is foldable through the clamping groove (58) and is further foldable, so that it encompasses the clamping area (56).
2. Wall module according to Claim 1, characterized in that the thermally isolating connecting member (54) is made from a plastic material.
3. Wall module according to Claim 2, characterized in that the plastic material is polyvinylidene fluoride PVDF.
4. Wall module according to one of Claims 1 to 3, characterized in that the first coupling unit (60a; 74a) is connected to the first wall shell (28) and the second coupling unit (60b; 74b) is connected to the second wall shell (30).
5. Wall module according to one of Claims 1 to 4, characterized in that, in case of a connecting device (44) of a first type, the at least one coupling unit (60a, 60b) includes at least one connecting bar (62) as connecting means to a wall shell (28; 30).
6. Wall module according to one of Claims 1 to 4, characterized in that, in case of a connecting device (46) of a second type, the at least one coupling unit (74a, 74b) includes at least one coupling plate (76) as connecting means to a wall shell.
7. Wall module according to one of Claims 1 to 6, characterized in that a thermally isolating material (42) is arranged inside the wall interior space (36).
8. Device for tempering of objects with a housing (12) in which a tempering tunnel (14) is placed,
   characterized in that
   the housing (12) includes at least one multi-shelled wall module (26) according to one of Claims 1 to 7.

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