EP4166879A1 - Four industriel pourvu d'enveloppe chauffante électrique - Google Patents

Four industriel pourvu d'enveloppe chauffante électrique Download PDF

Info

Publication number
EP4166879A1
EP4166879A1 EP21202456.6A EP21202456A EP4166879A1 EP 4166879 A1 EP4166879 A1 EP 4166879A1 EP 21202456 A EP21202456 A EP 21202456A EP 4166879 A1 EP4166879 A1 EP 4166879A1
Authority
EP
European Patent Office
Prior art keywords
furnace
heating
oven
interior
layer
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP21202456.6A
Other languages
German (de)
English (en)
Inventor
Robert Mayr
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to EP21202456.6A priority Critical patent/EP4166879A1/fr
Publication of EP4166879A1 publication Critical patent/EP4166879A1/fr
Withdrawn legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D11/00—Arrangement of elements for electric heating in or on furnaces
    • F27D11/02—Ohmic resistance heating
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
    • F27B9/06—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity heated without contact between combustion gases and charge; electrically heated
    • F27B9/062—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity heated without contact between combustion gases and charge; electrically heated electrically heated
    • F27B9/063—Resistor heating, e.g. with resistors also emitting IR rays
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D11/00—Arrangement of elements for electric heating in or on furnaces
    • F27D11/12—Arrangement of elements for electric heating in or on furnaces with electromagnetic fields acting directly on the material being heated
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D99/00—Subject matter not provided for in other groups of this subclass
    • F27D99/0001—Heating elements or systems
    • F27D99/0006—Electric heating elements or system

Definitions

  • Furnace for heat treatment processes which has an interior that can be heated with at least one heating element, the interior being surrounded by furnace walls, the furnace walls each having an inside and an outside, and at least one of the furnace walls having an opening through which goods can enter the interior and/or can be transported out.
  • thermoplastic rubbers of natural or synthetic origin are converted into elastomeric plastics by means of heat treatment.
  • large continuous furnaces are usually used for a corresponding heat treatment, in which the raw material is guided through the furnace with a conveyor system and leaves it as a vulcanized end product.
  • the raw material is applied as a liquid to form elements, which are then guided through the oven with the conveyor system. Due to the vulcanization, the applied raw material remains in the form of the shaped elements after passing through the oven, whereby the desired product is created.
  • the prior art primarily discloses furnaces which are heated by fossil fuels, heating rods, fan heaters or similar means for generating heat. These heating systems usually take up a lot of space and thus reduce the capacity of the stoves. At the same time, the heat is usually given off in a very bundled manner and so an additional fan is usually required to distribute the heat in the oven.
  • blowers or fan heaters since the use of blowers or fan heaters is very energy-intensive, this entails higher operating costs in addition to the higher acquisition costs. Due to a lack of insulation, the furnace walls usually also become very warm, which also leads to thermal power loss and thus to higher operating costs.
  • heating rods are very sluggish when it comes to temperature control and therefore temperature fluctuations can only be compensated to a limited extent.
  • the heating element is arranged in at least one heating mat, which comprises at least the heating element and a heat-insulating layer, with at least one heating mat being attached to the inside of the furnace walls in such a way that the heating element faces the interior and the insulating layer faces the furnace walls.
  • a heating element is arranged in several heating mats, which are then preferably connected to one another. It is also conceivable that at least a part of the heating elements and preferably all heating elements are connected to one another. The heating elements are then preferably connected to one another in series and/or in parallel.
  • the furnace walls are only partially lined with heating mats, or that only individual heating mats are attached to the furnace walls.
  • the heating mats are arranged in specific patterns on the oven walls. Most preferred is the arrangement of the heating mats directly next to each other, so that the extension planes of two heating mats are at least partially arranged in the same plane.
  • the extension planes of all heating mats that are mounted on the same furnace wall are preferably in the same plane. At least the planes of extent of the heating mats are aligned parallel to the furnace wall to which they are attached.
  • the heating mats are also attached to the oven walls in patterns.
  • the heating mats are then preferably arranged at regular intervals from one another.
  • Another possibility of attachment is to attach the heating mats to individual surfaces in the interior.
  • the heating mats are preferably attached to the top surface, one of the side surfaces and/or the bottom surface.
  • the interior of the furnace can have a wide variety of geometric shapes from the group of polyhedrons, spherical, or at least partially spherical bodies. In particular, however, cuboid or cylindrical interiors are preferred.
  • the heat from the heating elements is preferably predominantly released into the interior of the furnace.
  • the interior is thermally insulated from the oven walls by this arrangement of the heating mats at the points where heating mats are arranged.
  • All inner oven walls are preferably completely covered with heating mats so that there is no thermal bridge between the interior and the oven walls. This leads to a lower thermal power loss and thus also to lower heating costs.
  • the oven walls would not heat up as much due to the insulation, which in turn is an aspect of occupational safety, since there is no risk of burns if there is contact with one of the outer oven walls.
  • the furnace walls do not heat up due to the insulation with heating mats, these are no longer used as thermal energy storage devices, which means that the target temperature in the oven can be regulated more quickly.
  • the furnace walls with their thermal storage capacity, are a D component of the controlled system, which slows down regulation with limited energy supply (manipulated variable) to the target temperature of the furnace.
  • the furnace can preferably be heated to its operating temperature within a few minutes by insulating the interior from the furnace walls, since the furnace walls do not absorb any thermal energy.
  • the inner sides of the furnace walls are lined with a plurality of heating mats arranged next to one another, so that the interior is thermally insulated from the furnace walls at the lined points.
  • furnace walls are only partially lined with heating mats, or that only individual heating mats are attached to the furnace walls. It is also conceivable that the heating mats are arranged in specific patterns on the oven walls. Temperature zones in the oven can preferably also be realized by arranging the heating mats in the oven with the same heat output and temperature of the heating mats.
  • the arrangement of the heating mats directly next to one another is most preferred, so that the extension planes of two heating mats are in the same plane.
  • the plane of extension of the heating mats preferably has the shape of a polygon, particularly preferably the shape of a square.
  • the heating mats preferably have a shape with which they can be arranged next to one another in such a way that on a surface covered with heating mats, all points on the surface are covered by at least one heating mat.
  • the heating mats are therefore preferably arranged in such a way that none of the covered oven walls are visible from the interior of the oven after the heating mats have been installed.
  • the inner sides of the oven walls are completely covered with heating mats, so that there are no thermal bridges from the interior to the oven walls.
  • thermal bridges sections or areas in the furnace are to be seen as thermal bridges, at which the heat can escape particularly well from the interior of the furnace in comparison to insulated points due to a lack of or insufficient insulation. Accordingly, thermal bridges occur above all on the furnace walls in areas with poor insulation, with the heat energy being dissipated from the interior of the furnace via the material of the furnace walls and thus occurring as thermal power loss.
  • At least the locations of the furnace walls in the interior are preferably covered with heating mats, which are located in the high temperature ranges of the furnace. This would result in a minimization of the power loss at the points where the most energy would be lost without insulation.
  • the heating mats could only be attached to certain areas of the furnace walls in order to enable thermal bridges at certain points in the furnace and thus to generate specific temperature ranges in the furnace.
  • a heating mat consists of at least a first layer and the heat-insulating second layer, with at least one heating element being arranged in the first layer and the second layer being a thermal insulating layer.
  • the first layer and the second layer consist of the same material, with the heating element being arranged on the surface of the heating mat.
  • the heating element it would be possible for the heating element to be arranged directly below the surface of the first layer and thus emit its thermal energy through a thin layer of this material.
  • the first layer preferably consists of a material which has better thermal conductivity than the second layer. It is also possible that the first layer comprises a material which has good thermal conductivity and distributes the heat from the heating element over the entire surface of the mat.
  • the material of the first layer is preferably at least partially reflective, so that the infrared radiation from the heating element is reflected into the interior of the oven.
  • the second and thus insulating layer is preferably made of a material which has the lowest possible thermal conductivity. It is conceivable that materials such as rock wool, glass wool, ceramics or airgel could be used for the second layer. Above all, derivatives of these materials are also conceivable as the material of the second layer.
  • the heating mats can preferably also be made from recycled materials.
  • thermal insulators that can be used at the temperatures in the furnace can also preferably be used.
  • the second layer has a plurality of insulator layers, each of which preferably consists of a different material. This allows properties of different insulating materials to be combined.
  • At least one heating element is sewn into the first layer of a heating mat, so that the heating element is surrounded by the material of the first layer.
  • the heating element rests on the surface of the second layer and the first layer is a device with which the heating element is attached to the second layer.
  • the first layer is preferably a fabric or material that fastens the heating element flat to the second layer.
  • the heating element is woven into the first layer during the manufacturing process and the resulting composite is attached to the second layer. It is also conceivable for the first layer of the heating mats to consist of a solid layer, with the heating elements being cast in a material that hardens later during the production of the first layer.
  • the heating element is a flexible steel wire and can therefore be arranged in any form in the heating mat.
  • the heating element is preferably flexible and can therefore be deformed as desired, so that a heating mat with the heating element can be bent and shaped.
  • the heating element can therefore be based on an aluminum fabric, for example, or on another electrically conductive material material exist.
  • the use of a heating element made of a metal alloy is also conceivable.
  • the heating element preferably has a flexible steel wire or other electrically conductive wire.
  • the heating element is preferably laid in the first layer of the heating mat in such a way that it is arranged in a plane parallel to the plane of extension of the heating mat.
  • the heating element is laid in the heating mat in such a way that it is as long as possible. It is also conceivable that several heating elements are laid in the same heating mat.
  • the heating element is arranged in a meandering, circular, wavy, bifilar, modular or similar manner in the first layer.
  • the heating mat has a further third layer, which is an adhesive layer and with which the heating mat can be fastened to the furnace walls.
  • this layer is also attached to the second layer such that the second layer lies between the first and third layers. It is conceivable that the third layer does not extend over the entire plane of extension of the second layer. Accordingly, the third layer preferably consists only of adhesive dots with which the heating mat can be glued to the oven walls. It is possible that the adhesive is attached to the heating mat in a wide variety of layer thicknesses and shapes.
  • the third layer is preferably a temperature-resistant adhesive layer which can be activated before the heating mat is attached to a surface and with which the heating mat can then be attached to a surface. It is conceivable that the third layer is only applied to the heating mat shortly before it is installed.
  • the heating elements generate heat in the form of infrared radiation, which is emitted from the heating mats to the interior of the oven.
  • the infrared radiation is preferably radiated into the interior of the oven orthogonally to the plane of extension of the heating mats. It is conceivable that between the heating elements and a reflective layer is arranged on the second layer of the heating mats, which reflects the infrared radiation from the heating elements into the interior of the oven. In particular, the infrared radiation emitted by the heating elements in the direction of the oven walls is reflected back into the interior.
  • a corresponding reflective layer could be implemented, for example, with aluminum foil or with a reflector specially designed for this purpose (gold foil, etc.).
  • the infrared radiation impinges on goods in the interior of the oven and thereby heats them up.
  • the surface of the goods is heated by the infrared radiation.
  • the goods are preferably heated inside the oven with the infrared radiation of the heating elements. It is conceivable that the goods are also heated by convection via the air in the oven.
  • the entire interior of the oven can be heated with infrared radiation by convection, and the air temperature in the oven can therefore also be heated to any desired value.
  • the air in the oven is preferably heated by the goods in the interior, with the infrared radiation from the heating elements hitting the relevant goods and thus heating the surface of the goods.
  • the goods are in direct contact with the air inside the oven, with the air absorbing the heat from the surface of the goods through convection and thus heating up.
  • a corresponding convection preferably occurs on all objects in the oven that heat up through contact with the infrared radiation.
  • Sensors are preferably fitted in the oven which measure the temperature of the goods and thus enable the heating output to be precisely controlled.
  • the heating mats can be controlled individually or in combination, so that different temperature zones can be set in the interior.
  • Each heating mat and in particular the heating elements can preferably be controlled individually in order to achieve the best possible result for the heat treatment of the goods.
  • Temperature ranges in the oven can preferably be set by controlling the heating mats. It is advantageous if at least the heating mats of the different temperature ranges can be controlled separately from one another.
  • the hotter temperature range is advantageously at the top and the colder temperature range is at the bottom of the furnace.
  • the interior space or the temperature zones can be adjusted from room temperature to 600.degree. C., preferably up to 300.degree. C. and particularly preferably up to 200.degree.
  • the heating output of the oven can therefore preferably be regulated in such a way that the temperature of the goods themselves is up to 600.degree. C., preferably up to 300.degree. C. and particularly preferably up to 200.degree.
  • the goods could be heated and/or cooled in stages by being transported through the temperature zones in the oven. This can help to improve certain chemical processes, for example by making them more complete or faster.
  • the furnace is a continuous furnace through which runs at least one conveyor on which the goods to be heat-treated are attached.
  • the funding can be a conveyor belt, a conveyor chain or some other means for transporting goods.
  • the conveyor belt preferably forms a closed circuit, this circuit running through at least one work station.
  • the furnace according to the invention represents a work station through which the conveyor runs.
  • the conveyor belt preferably runs through all work stations at a constant speed, as a result of which the dwell time of the goods in the oven is constant.
  • the heat treatment in the furnace is therefore not regulated by the time the goods remain in the furnace, but by the activation of the heating mats.
  • the conveying means preferably runs parallel to the longitudinal direction of the furnace, it being conceivable that the conveying means is deflected at least once and is therefore arranged one above the other with respect to the height direction.
  • the conveying means preferably runs at least partially in wavy lines in the vertical direction.
  • the relative speed of the two sections to one another corresponds to twice the conveying speed.
  • the furnace has at least one opening at one of the longitudinal ends of the furnace through which the conveyor passes.
  • the furnace could also have at least one opening at one of the ends of the furnace lying in the height direction.
  • the oven has no more than two openings, with the conveying means running into the oven through one of the openings and exiting through the other opening.
  • the goods are rubbers, which can be vulcanized to elastomers by the heat in the interior of the oven. Accordingly, vulcanization processes preferably take place in the oven, with the goods being able to be brought into the oven as a liquid starting material and leaving it as an elastic end product.
  • the production plant also includes preparatory stations with the starting material for the heat treatment in the furnace, with these preparatory stations also being able to be heated with the heating mats.
  • At least one of the preparatory stations is a basin with a liquid into which the mold elements attached to the conveying means are at least partially be ushered in. Possibly the shaped elements are also successively guided into several basins, with the basins being able to contain different liquids.
  • the tanks In at least one of the tanks is the material that is fed into the oven as the starting material on the mold elements.
  • the heating mats which are installed in the oven, can also be attached to the basins, so that the heating mats heat up the basins and the substances located therein. This is mainly used to preheat the substances in the tanks before they come into contact with the mold elements.
  • the figure 1 shows a furnace 1 from the side, this extending in the longitudinal direction X and the height direction Z.
  • the course of the conveyor 8 can be seen particularly well, which runs predominantly parallel to the longitudinal direction X and offset in the vertical direction Y by deflection rollers 15 .
  • the conveyor 8 thus runs in the plane which is spanned from the longitudinal direction X and height direction Y.
  • the conveying means 8 preferably runs in a closed circuit, this circuit being arranged at least partially in the interior 3 of the furnace.
  • the majority of the conveyor 8 runs in the furnace 1, with the conveyor 8 running into the furnace 1 at one end in the longitudinal direction X and preferably also exiting on the same side.
  • the conveyor 8 enters the interior 3 through at least one opening 5 in at least one of the furnace walls 4 and leaves the interior 3 again through either the same opening 5 or another opening 5.
  • the inlet opening 5 and the outlet opening 5 are preferably located there in the same furnace wall 4, which means that the conveyor 8 is deflected at least once in the furnace 1 in order to change its running direction.
  • the conveyor 8 runs through further stations 10, at which preparatory measures for the heat treatment in the furnace 1, but also follow-up measures can take place.
  • the shaped elements 14 are first guided into a basin with a cleaning solution 12. The mold elements 14 are then mechanically cleaned by brushes. Before being introduced into the furnace 1, the shaped elements are still guided into the basin 11 with the starting material for the heat treatment, which contains the material 6 to be heated.
  • the shaped elements 14 also run through a coating process in which an agent to prevent the goods 6 from sticking together is applied to the shaped elements 14 , which preferably also enables better detachment of the goods 6 from the shaped elements 14 .
  • the reference number 7 is in the figure 1 for a position at which preferably at least one heating mat 7 for heating at least one of the preparatory stations 10 is arranged. These heating mats 7 would preferably be on the outside of the tub mounted so that the heating elements 2 point to this tub.
  • the trough itself and thus also a product located in the trough can preferably be heated in this way.
  • the material to be heated is preferably caoutchouc or a caoutchouc solution which, after the shaped elements 14 have been inserted into them, remains adhered to the shaped elements 14 in a layer.
  • the shaped elements 14 are preferably hand-shaped, balloon-shaped or similar.
  • the heat-treated, finished goods 6 are removed from the mold elements 14 at at least one post-processing station.
  • the finished goods can be gloves, rubber balloons or similar objects which can be produced from rubber by vulcanization.
  • figure 2 represents the furnace 1 from a top view, this being in figure 2 extends in the longitudinal direction X and width direction Y.
  • the course of the conveyor 8 and in particular the extent of this in the longitudinal direction X can be seen.
  • the sections of the conveying means 14 lying one above the other in the height direction Z are in figure 2 not visible because the perspective in figure 2 points to the furnace 1 along the height direction Z.
  • the conveying means 8 is guided by deflection rollers 15 from a lower level in the height direction Z, into which figure 2 visible plane redirected.
  • the shaped elements 14 are preferably arranged with their longitudinal direction parallel to the width direction Y. When passing through the preparatory stations 10, the shaped elements 14 are preferably at least partially aligned with their longitudinal direction parallel to the height direction Z.
  • figure 3 shows a heating mat 7 from a plan view along the height direction Z, the heating mat 7 extending with its extension plane in the width direction Y and the longitudinal direction X.
  • thermal safety switches 9 can also be seen, which represent a temperature limitation 9 of the heating mat.
  • the heating element 2 is arranged in a plane which extends between the lengthwise X direction and the widthwise Y direction. In further embodiments, it would also be possible that the heating element 2 is not exclusively in the figure 3 is arranged in the plane shown, but also runs in the height direction Z and is therefore arranged three-dimensionally in the heating mat 7 . It is conceivable that several heating elements 2 are arranged one above the other in the heating mat 7 with respect to the height direction Z.
  • the heating element 2 is preferably arranged in the heating mat 7 in such a way that the largest possible area of the plane of extension of the heating mat 7 can be heated with the heating element 2 .
  • the heating element 2 is in figure 3 shown as a braid, which is arranged in wavy lines in the heating mat 7.
  • the heating element 2 is arranged in the heating mat 7 in such a way that there is a fixed distance between the loops of the heating element 2 . This distance between the loops preferably exists so that the heating mat 7 emits heat evenly over its entire plane of extension. Irregular distances between the individual loops of the heating element 2 could result in warmer or colder areas on the heating mat 7, which would have negative effects, such as greater stress on the material due to temperature gradients.
  • the arrangement of the heating elements 2 in the heating mat is in figure 3 shown meandering, with other forms of laying, such as bifilar laying would be possible.
  • temperature limitations 9 of the heating mat 7 can be seen, which prevent a maximum temperature from being exceeded.
  • These temperature limitations 9 are preferably electrical resistors, which change their resistance as a function of the temperature. By connecting these temperature limitations 9 in front of the heating element, the maximum electrical power flowing through the heating element 7 is limited and a maximum temperature is thereby prevented from being exceeded.
  • the temperature limiters are preferably attached in such a way that they lie between the electrical connections 16 of the heating mat 7 and the heating element 2 at the positive and negative poles.
  • FIG. 12 therefore represents a view of the heating mat 7 which is sectioned through the plane which is spanned by the width direction Y and the height direction Z.
  • this representation of the heating mat 7 the different layers of the heating mat 7a-c can be seen.
  • the first heating layer 7a of the heating mat 7 is furthest away from the inner wall of the oven 4a when the heating mat 7 is installed. As in Figure 4 shown, the heating element 2 is in this heating layer 7a of the heating mat 7.
  • the representation of the heating element 2 as individual points corresponds to the existing pattern of the heating element 2 from figure 3 , viewed from a side sectional view of the heating mat 7 .
  • the heating layer 7a preferably also includes the temperature limitation 9 of the heating mat, which is arranged between the heating element 2. It is conceivable that several temperature limiters 9 are arranged in the heating mat 7 . A corresponding temperature limiter 9 is preferably connected upstream of each connection pole of the heating mat 7 . Accordingly, two temperature limiters 9 are preferably arranged in the heating mat 7, one upstream of the positive pole and one upstream of the negative pole. The maximum current through the heating element 2 and thus the maximum heat output of the heating mat 7 is limited by the upstream connection of temperature limiters 9 .
  • the layers 7a-c of the heating mat 7 have different thicknesses with respect to the height direction Z.
  • the first layer 7a is preferably only so thick that the heating element 2 can be arranged completely in it, so that it is at least partially or completely separated from the first layer 7a is covered.
  • At least the first layer 7a and the third layer 7c are preferably just thick enough to fulfill their technical purpose. This would avoid wasting space in the interior 3 unnecessarily.
  • the thickness of the second layer 7b can preferably be selected and the insulating properties of the mats 7 can thus be adjusted.
  • FIG 5 1 shows an oven 1 from a side sectional view along the longitudinal direction X, so that the interior 3 of the oven can be seen. Furnace 1 is shown in this view cut through a plane which is spanned from the width direction Y and the height direction Z.
  • figure 1 corresponds to the Figure 5 a perspective into the furnace 1 against the longitudinal direction, so that the openings 5 in the furnace wall 4 can be seen.
  • two openings 5 are arranged in a lateral furnace wall 4 lying in front of the head.
  • One of the openings 5 preferably corresponds to an inlet opening and the other of the openings 5 to an outlet opening, through which the shaped elements 14 with the goods 6 can be brought into and out of the interior space 3 .
  • the shaped elements are brought into and out of the interior 3 via the conveying means 8 .
  • the conveyor 8 is deflected in the interior 3 via deflection rollers 15 so that it is arranged in several planes/layers with respect to the height direction Z.
  • the conveyor 8 is deflected in the interior via five deflection rollers 15.
  • the conveyor 8 is deflected in the interior via five deflection rollers 15.
  • FIG 5 is a possible arrangement of the heating mats 7 in the interior 3 of the furnace 1 can be seen, the heating mats 7 through the perspective of figure 5 also in its sectional view (see figure 4 ) are shown.
  • the heating mats 7 are attached to the inner sides of the oven walls 4a.
  • the heating mats 7 are preferably attached to the oven walls 4a with adhesive. However, it is also possible for the heating mats to be screwed to the oven walls or attached using other mechanical methods and/or positive locking.
  • the infrared radiation IR can also be seen, which is emitted by the heating mats 7 into the interior 3 and in the direction of the shaped elements 14 with the goods 6.
  • the infrared radiation IR is preferably emitted uniformly by all heating mats 7 into the interior 3, so that the goods 6 in the oven 1 experience the same heat output at all points.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Tunnel Furnaces (AREA)
EP21202456.6A 2021-10-13 2021-10-13 Four industriel pourvu d'enveloppe chauffante électrique Withdrawn EP4166879A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP21202456.6A EP4166879A1 (fr) 2021-10-13 2021-10-13 Four industriel pourvu d'enveloppe chauffante électrique

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP21202456.6A EP4166879A1 (fr) 2021-10-13 2021-10-13 Four industriel pourvu d'enveloppe chauffante électrique

Publications (1)

Publication Number Publication Date
EP4166879A1 true EP4166879A1 (fr) 2023-04-19

Family

ID=78179297

Family Applications (1)

Application Number Title Priority Date Filing Date
EP21202456.6A Withdrawn EP4166879A1 (fr) 2021-10-13 2021-10-13 Four industriel pourvu d'enveloppe chauffante électrique

Country Status (1)

Country Link
EP (1) EP4166879A1 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4833301A (en) * 1984-01-18 1989-05-23 Vitronics Corporation Multi-zone thermal process system utilizing nonfocused infrared panel emitters
US5910267A (en) * 1997-09-24 1999-06-08 Stricker; Jesse C. Infrared heater
WO2012162380A2 (fr) * 2011-05-23 2012-11-29 Inductotherm Corp. Four à induction électrique doté d'un système de détection de l'usure du revêtement
EP3169137A1 (fr) * 2015-11-16 2017-05-17 Heraeus Noblelight GmbH Chauffage infrarouge
CN208850086U (zh) * 2018-07-31 2019-05-10 天津洲宇机电设备科技有限公司 一种工业用电热毯
CN209013765U (zh) * 2018-11-07 2019-06-21 宝鸡鼎晟真空热技术有限公司 用于高温炉中的钨丝网发热器

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4833301A (en) * 1984-01-18 1989-05-23 Vitronics Corporation Multi-zone thermal process system utilizing nonfocused infrared panel emitters
US4833301B1 (en) * 1984-01-18 2000-04-04 Vitronics Corp Multi-zone thermal process system utilizing non-focused infrared panel emitters
US5910267A (en) * 1997-09-24 1999-06-08 Stricker; Jesse C. Infrared heater
WO2012162380A2 (fr) * 2011-05-23 2012-11-29 Inductotherm Corp. Four à induction électrique doté d'un système de détection de l'usure du revêtement
EP3169137A1 (fr) * 2015-11-16 2017-05-17 Heraeus Noblelight GmbH Chauffage infrarouge
CN208850086U (zh) * 2018-07-31 2019-05-10 天津洲宇机电设备科技有限公司 一种工业用电热毯
CN209013765U (zh) * 2018-11-07 2019-06-21 宝鸡鼎晟真空热技术有限公司 用于高温炉中的钨丝网发热器

Similar Documents

Publication Publication Date Title
EP2021161B1 (fr) Procédé de chauffe par micro-ondes d'ébauches en plastique
EP2100712B1 (fr) Dispositif et procédé de chauffage de préforms
DE102004042422A1 (de) Beheizbares Formwerkzeug für die Herstellung von Bauteilen aus Faserverbundstoffen
EP2040859A2 (fr) Appareil à rayonnement, procédé et ensemble de revêtement par poudre de matériaux dérivés du bois
DE3783953T2 (de) Vorrichtung zur temperaturregelung von extrudier-spritzgiess- und -ziehmaschinen und -zylinder fuer kunststoffe.
EP4166879A1 (fr) Four industriel pourvu d'enveloppe chauffante électrique
AT509596A4 (de) Verfahren zum erwärmen eines formbauteils für ein anschliessendes presshärten sowie durchlaufofen zum bereichsweisen erwärmen eines auf eine vorgegebene temperatur vorgewärmten formbauteils auf eine höhere temperatur
DE102012103197A1 (de) Vorrichtung und System zum Halten und Erwärmen eines Vorformlings und Verfahren zum Erwärmen eines Vorformlings
EP2501659B1 (fr) Four à chambre destiné à la fabrication de plaques de mousse de verre ou de corps moulés en mousse de verre
DE102010002692A1 (de) Verfahren und Anlage zur automatisierten Herstellung von Baumkuchen bzw. von Kuchen nach Baumkuchenart
DE4413252A1 (de) Elektrischer Back- und Bratofen
EP2372281A1 (fr) Four destiné au traitement thermique d'une multitude d'objets
WO2014169898A1 (fr) Outil d'usinage thermique de composants
DE1964395B2 (de) Heizvorrichtung
DE102009011910A1 (de) Flächenelement zur thermischen Bearbeitung von Stoffen, Gütern und Objekten
WO2015074998A1 (fr) Ensemble de chauffage
DE202014105020U1 (de) Dielen mit Ausnutzung und Bodenbelag
DE102005058592A1 (de) Dampferzeuger
DE102017002467B4 (de) Verfahren zur Herstellung einer Lebensmittelfertigmischung
EP2368854A2 (fr) Procédé de fabrication de produits en verre cellulaire et autres substances porogènes, ainsi que produit fabriqué et four destiné à la réalisation du procédé
EP1961017B1 (fr) Dispositif d'application d'un vernis isolant sur un element electroconducteur
DE102018219412A1 (de) Verfahren und Vorrichtung zur Vulkanisation von Körpern aus elastomerem Werkstoff
DE2851103A1 (de) Vorrichtung zum vulkanisieren oder zum vernetzen eines profilstranges
DE2110500A1 (de) Waermeaustauschermodul und dieses verwendender Ofen
DE202006019733U1 (de) Infrarot-Bestrahlungsmoduleinheit

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN PUBLISHED

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20231020