DE1515044C3 - Device for heat treatment, in particular of material in web form, by means of microwaves - Google Patents

Description

3 4

in order to allow the gaseous medium to pass over, as is the case with central suction in the ceiling

are equipped. of the gelation channel is the case.

Arrangement and design of the underneath the wa- It is omitted once the channel housing, the core track 12 lying waveguide 11 can be caused and a considerable space preferred embodiment of the invention may be claimed. Secondly, the reversible steps are carried out in exactly the same way as the amounts of air that are released are decisively reduced, since the parts described above for the path 12 which is now concentrated in a small space above the air movement to be treated are described. That is. The consequence of this is that the air flow means that the lower parts 11 of the waveguide 10 are also sert and the necessary power requirement (fans 11 form double channels 11, 19 with in the intermediate io or the like) can be reduced,
cover 20 arranged passage openings 21. There are also at least two such Doppelka- ways (German Auslegeschrift 1 078 709) in the channels 11, 19 by a collecting line 22 each tight position to reconnect the guidance of the gaseous medium , which also come into the area between the one, to blow such a medium through a collecting line adjacent to each other, through the collecting line 22 15 line (eg 17) and it through the opening bridged space openings 23 or openings 15 in the intermediate ceilings 14 again abzudgl. are provided. pull if necessary or if necessary

One of the key advantages of a fixture is desirable. With central suction in the

device according to the invention can be seen in the fact that the ceiling of a gelation channel is such a reversal

more the actual, so far always necessary aspect of the flow direction is impracticable,

housing of a gelation or heating channel dispensable A device according to the invention is however

will. Because with such a device they can be used more universally. As a result of on tight

because ■ at least two waveguide double channels 10, limited space and due to the novel structure

13 or 11, 19 together with the concentrated air-

men collecting line 17 or 22 conveying a 25 guide within very close to each other

Unit for the gaseous medium, which can also be used for purposes of the device

for example, is fed through the channel 13, use that through a condensate protection

goes through the waveguide 10 in the area of the goods 12 scavenging air. In addition to the mini

and then through the manifold 17 again microwave heating with the help of a warm or hot

can be suctioned off immediately. In this way can 30 ßen gaseous medium, for example by means of

bring about a reliable protection against condensation, hot air or the like, the device in itself known

but without this - as in the manner mentioned at the beginning (British patent specification 620 956) as one

th device with a duct housing - use the type of nozzle drying device, which then

all or at least the majority of the channels in the channel also have the advantage that they do not have a housing

inside existing air with suction 35 required for a drying chamber.

1 sheet of drawings

Claims (2)

parts of the waveguide are formed as double channels with in their claims: ... intermediate floor provided openings are formed, with at least two double channel 1. Device for the heat treatment of waveguide lower parts through a collecting line with web-shaped material, which are connected to one or more 5 with each other, the two-part in the areas between ren generators of microwaves and with their leading to the waveguide double-channel lower parts serving, two-part, preferably has breakthroughs, openings or the like,
Meander-shaped waveguides are provided, the cavities of which are designed as double channels with passage openings for a gas upper parts, in-shaped medium are also known from the German Ausdem above the waveguide ceiling a channel io Legeschrift 1 078 709, which, however, is a high for the conduction of gaseous Media provided frequency heating device for lumpy or is and in the so formed intermediate ceiling granular substances are arranged using plate-shaped openings for the medium, describes electrodes. The conveyors are characterized in that, depending on the direction of the material to be treated, at least two upper parts (10, 13) of the double-channel electrodes are divided into individual chambers leading to the waveguide (10, 13 and 11, 19) have walls that are permeable above and to the outside of their ceilings (16), with gases or steaming passage openings (18) for the gaseous to be introduced into the or supply of emerging and / or into the loading space between the double channels Serve mefes. . . dium-equipped manifold (17) tightly with- 20 In contrast, the subject matter of the are connected to each other. Finding, in the case of electrode-free microwave heat 2. Device according to claim 1, characterized handling devices specially designed hollow that the lower parts (11, 19) combined in groups and with conductor channels the waveguide (10, 13 and 11, 19) as Doppelka- collecting lines for the gaseous medium anneal with in their intermediate floor (20) provided, creating a compact and technological NEN breakthroughs (21) are formed, each universally usable. Device is created, at least two double-channel waveguide under- in which the air flow is simplified and thus the share through a collecting line (22) with each other required power requirement for the blower device connected, which is reduced in the areas between the. Waveguide double channel lower parts opening 30 The invention and its advantages are best Breakthroughs, openings (23) or the like. Has. on the basis of the following description of an off management example understood, which in drawings is reproduced. And that shows Fig. 1 is a schematic plan view of a 35 meandering waveguides, with the overview for the sake of the manifolds are omitted, and F i g. 2 shows a likewise schematic cross section through the device. The invention relates to one in one not Therein 10 and 11 are the two one in pre-published proposals of the applicant 40 cross-section rectangular waveguide forming parts (German patent .1218 701) described device. denotes that leaving a gap for the device for heat treatment for web-shaped implementation of the web to be treated 12 goods that are set with one or more producers of over or against each other. In each case two microwaves and with their forwarding - or more of these waveguides 10, 11 can be provided in two-part, preferably meander-shaped 45 known manner through bends K to form meander-shaped waveguides, the upper parts of which are combined as double waveguide lines (Fig. 1). channels are formed by above the waveguide. Zeuger M, which at the other end of the waveguide train schendecke breakthroughs for the medium angeord- 5 ° a final or water load W is assigned.
are net. The web 12 is in the way to the In this device, the double channels are used to guide waveguides 10, 11 that their movement of the supply of scavenging air, which flows centrally from the ceiling or conveying direction A, transversely to the waveguide lines of a gelation chamber accommodating the entire device. 10, .11 takes place. The waveguides 10 arranged above the goods 12 are removed and the condensate formation is prevented as double channels 10, 13. . ■ -... ft · - formed. The ceilings of the waveguide 10 thus form the object of the invention not only to considerably simplify an intermediate ceiling 14 between the actual device of this type, but also to make them more universally usable or 13, which is used for guidance to make a gaseous medium usable. 60 serves, for its crossing into the false ceilings 14 According to the invention, this object is achieved in that passage openings 15 are provided,
by having at least two upper parts of the double die above the web 12 to be treated. channel waveguide through one above their ceilings. ordered double-channel waveguides 10, 13 are each arranged, with in the space between the double at least two by one above their Dekkanäle opening through openings for the collecting line 17 arranged in 65 ken 16 tightly miteingasformen Medium-equipped manifold connected to the other, which is sealed in the area between the two are connected to each other. the double-channel waveguides 10, 13 bridged in this way, it can be advantageous if the un- with openings, breakthroughs, slots 18 or the like.