Process furnace or similar equipment |
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IPC classes for russian patent Process furnace or similar equipment (RU 2421544):
 Procedure for gas-dynamic pressurisation of loading and unloading gates of draw furnace / 2420700
Procedure for gas-dynamic pressurisation of loading and unloading gates of draw furnace consists in circulation of protective gas in chambers of gas seal due to drop of pressure in each of these chambers. Also, intensity of circulation is controlled with a circulation circuit wherein flow of gas is actuated with a fan connected to the chambers. For circulation of protective gas there is used an intermediate chamber connected with two fans. Relative to this chamber the fans generate two independent circulating circuits of gas motion. There is used the intermediate chamber connected to an outlet of one fan and to an outlet/inlet of another. A reverse fan generating a circulation circuit of gas motion adjoins the furnace. Gas pressure excessive relative to atmosphere and stabilised in time is set in the intermediate chamber. The value of this pressure is less, than working pressure of protective gas in the furnace. Pressure of protective gas in the intermediate chamber can be stabilised within the range of 0.25-0.5 of working pressure of gas in the furnace.
 Device for injecting gas into reservoir / 2413150
Device for injecting gas into metallurgical reservoir consists of channel for gas flow passing from back end to front end, of passages for cooling water supply and drain formed with three concentric tubes and of circular hollow head of gas flow channel at front end of channel with passage for cooling water connected with passages for cooling water supply and drain. The channel head includes a hollow shell and a dividing device positioned inside the shell; the dividing device consists of a dividing ring and of multitude of circular lugs. The lugs project outside from central part of the dividing end to the shell and form passages for cooling water in form of a row of circular galleries for water flow each running along circumference of the channel for gas flow and which are interconnected for water flow successively via the galleries from the passage for supply of cooling water to the passage for return of the cooling water. Also, there are partitions installed between the dividing device and the said shell to make ends of galleries for water flow and orifices in the said lugs forcing water flow successively along galleries.
 Device for injecting gas into reservoir / 2413149
Device for injection of gas into metallurgical reservoir consists of channel for gas flow, elongated central device passing inside channel for gas flow from its back end to front end, of multitude of blades directing flow; also, blades are arranged around central device next to front end of channel for swirling gas flow. Further, the device consists of passages for cooling water supply and withdrawal. In the device a circular head of the channel at the front end of the channel has an internal passage for cooling water connected with passages for cooling water supply and withdrawal to cool the channel head from inside. The blades directing flow are assembled on the central device so, that they pass along the central device from the back end to the front end and their dimension ensures their front end contact with the supporting them head of the channel cooled with water from inside. The further back part of the channel head has a circular back wall running from internal periphery wall of the head. Also, the back wall of the head has a deformed corrugation to receive radial load on the wall at contact with front ends of the blades located inside the further back part of the channel head to contact only the further back part of the channel head.
 Batch-operated thermofurnace / 2410619
Invention relates to batch-operated thermal equipment, particularly to low-temperature chamber ovens. For more efficient use of energy resources during the curing of products from polymeric materials in the case of thermofurnace with outer heat insulation an external circulation screen is situated made of the material with low thermal conductivity for movement of air in the furnace during heating of products in the working chamber, and an internal circulation screen for movement of air during cooling of products. The external circulation screen is equipped with flaps overlapping the channel between the external and internal circulation screens when heating the products, and on cooling products overlapping the channel between the case and the external circulation screen.
 Method and device for decreasing level of contamination of treated items / 2358018
To decrease level of contamination of item at its heating in relatively contaminated atmosphere heating of item is performed in the first container which is filled with protecting gas at the first stage; further item is placed in the second container. Before heating the item there is created vacuum in the second container, while in the first container partial pressure of chemical compound contaminating the item is lowered. The first container is equipped with a device for supply of protecting gas, with a device for communicating the internal cavity of the first container with the internal cavity of the second container, also for creating depression in the first container at vacuumisation of the second container and for reducing partial pressure of the chemical compound contaminating the item. Material with considerable specific surface is placed in the first container; reacting with the chemical compound contaminating the item the material suppresses the compound and decreases level of contamination of the item.
 Method of burning ceramics / 2347768
Present invention pertains to making ceramic products from natural mineral raw materials and can be used for burning crude products in a hydrogen reducing medium. The layer of products to be burnt is put on top of a layer of carbon-bearing reducing agent. The reducing agent is oxidised by hot combustion products of hydrocarbon fuel (carbon dioxide and water vapour), forming carbon and hydrogen oxide. Burning takes place in a hydrogen atmosphere. Carbon oxide is removed from the bottom of the reaction zone. The combustion products of hydrocarbon fuel are passed through the layer of carbon-bearing reducing agent from top to bottom, at a rate which allows for keeping the formed hydrogen in the layer of the burned products.
 Induction furnace for operation at high temperatures / 2326319
Furnace has a container forming the internal chamber for the placement of products for processing, with a current collector, an induction coil, which induces current in the current collector for its heating, and a water-cooled roof. When the temperature in the hot zone of the furnace reaches approximately 1500°C, a lifting tackle installed on the roof lifts the furnace cover allowing hot gases from the hot zone to mix with cooler gas in the roof area. This quickens the hot zone cooling, reduces cooling periods significantly, and eliminates the need to fit the furnace with excessive valves or other complicated cooling devices, which should be replaced periodically. The service life of the graphite current collector of the furnace at a high operating temperature increases due to enclosing the current collector with a barrier layer of flexible graphite retaining the graphite evaporation. Check disks inside of the current collector provide for obtaining accurate temperature profile of the hot zone.
 Draft device for transportation of chemically aggressive and high-temperature nonexplosive gas media / 2320925
Invention can be used in gas cleaning plants of pickling shops and for circulating gas medium in metal heat treatment furnaces. Proposed device has scroll housing, intake branch pipe, working wheel with blades connected with wheel main disk at one side and with ring at other side. Part of blades is provided with additional blades, weld seams of working wheel are brought out of the limits of its flow portion and are blown by clean air sucked in from surrounding space inside device owing to rarefaction built by rotating additional blades. If proposed device is used for transfer of high-temperature gas medium in thermal furnaces, blowing out of outer surfaces of working wheel with cold ambient air reduced temperature of side surfaces of working wheel by scores of degrees which increases mechanical strength of wheel even at temperature rise of handled gas medium.
 Installation for production of mullite / 2311393
The invention is pertaining to the installations of the high-temperature treatment of the topaz concentrate for production of mullite and may be used in the industry at production of the ceramic material, the refractory and construction materials, and also in the chemical industry. The installation for production of mullite consists of the furnace including the exterior and interior stacks located coaxially with formation of the heating chamber and supplied with the plasma generators connected by their outlets with the heating chamber, and the gas circulation circuit, which using the gas counter flow to the granules movement is switching on the activator of consumption. The heating chamber is supplied with the sets of nozzles connected to the activator of consumption and located so, that to provide the horizontal and vertical circulation of the gas in the heating chamber and its feeding into the layer of the granules through the holes executed in the wall of the interior stack. The furnace inlet is connected with the inlet of the granules drying furnace, and the outlet - with the receiving hopper equipped with the circuit of circulation of the gas cooling the granules. The internal stack of the furnace is made with the alternating in pairs protrusions, under which there are the holes connecting the internal stack with the heating chamber. Each next pair of the protrusions is shifted with respect to the previous one by 90°. The installation allows to provide conditions for production of the qualitative fibrillar and (or) needle-shaped mullite crystals in the continuous mode.
 Forced-draft reverse device for the convection heating or cooling of the metal in the thermal furnace / 2309352
The invention is pertaining to the thermal equipment, in particular, to the recirculation furnaces and may be used also for circulation of the air or the gases in other aggregates. For reduction of expenditures used for installation of the forced-draft reverse device in the furnace, reduction of the operational costs at the sufficient reliability of operation the forced-draft reverse device includes two similar to each other connected among themselves centrifugal blowers, each of which has the with the blades and located in the spiral jacket. The device is made with the horizontal location of the axes of rotation of the impellers. At that the blowers are connected with each other by means of intercommunicating spiral jackets. At operation the device periodically changes the direction of the gas medium motion inside the furnace volume, ensuring thereby the fast and uniform heating or cooling of the processed metal.
 Device for metal-thermal reduction of pulp of galvanic production / 2419659
Device consists of cylinder case with cover equipped with internal refractory coating. Also, inside the case there is installed a graphite crucible in form of truncated cone facing the bottom with smaller base. An orifice in the base is closed with a pusher. Further, the device consists of a striking appliance. The device is equipped with a located in the cover branch for exhaust of volatile products of metal thermal reaction from a working reservoir into a neutralising installation and with a branch for blasting with compressed air.
 Caisson of pyrometallurgical aggregate of bubble type / 2409795
Caisson consists of plate out of heat conducting material with imbedded into it coil, and of connecting pipes for input and output of coolant. Ratio of total area of the coil of the caisson calculated by its external diametre (F1, m2) to area of the caisson (F2, m2) from flame side is F1: F2-0.90-2.2. The caisson can be made with an orifice for insertion of air tuyere into it.
 Furnace for smelting materials containing non-ferrous and ferrous materials and high-melting formations in liquid bath / 2401964
Furnace consists of caisson shaft divided with cross partition into melting and reducing chambers equipped with low and upper tuyeres, of sole, of siphon for accumulation and tapping metal and slag via corresponding channels with orifice in lower part of end wall, of device for loading charge and solid materials into melting and reducing chambers and of pipe for fume extraction. The siphon is equipped with at least one bushing for insertion and transfer of an electrode in it, with a block for electrode manipulation, with a power source, and with a block of control-measuring facilities and automation. Also an upper part of the electrode is connected to the power source and to the block of control and measuring facilities and automation; the output of the latter is coupled with an input of the manipulation block ensuring vertical reciprocal motion of the electrode via its drive and its deviation from vertical axis.
 Furnace for continuous refining of magnesium / 2400685
Furnace consists of lined jacket with electrodes, and of bell installed inside with charge chamber and central vertical channel, with vertical webbing, overflow channels and bottom between two of ribs and two branches with removable funnels. An orifice of diameter bigger, than diameter of a charging branch and of cross section less, than cross section of the overflow channels in vertical ribs near the charging branch is made in the bottom under the charging branch. The removable charging funnel is ended with a cup-like guide of flow at depth of 0.1-0.5 of height of the bell from its top. Also diameter of the guide is 30-80 mm bigger, than diameter of the end of the charging funnel. Working electrolyte of electrolytic cells is used as heating salt.
 Melting furnace / 2399003
Furnace consists of case with installed therein melting section equipped with facility for charge supply and burner and electro-thermal section divided from melting section with partition not reaching hearth; also melting section is equipped with electrodes, electric holders, devices for metal and slag tapping and with gas duct. A lower edge of the partition is positioned above the level of the slag tapping device thereby forming a gas-overflow port of alternate cross section with the level of melt. The metal tapping device is equipped with a well communicated with an overflow zone of the partition via a channel. Section of the port is chosen according to specified ratio of furnace width to inter-axis distance between electrodes. The charge supply facility has a chute superposed on a stepped hearth with incline to a partition side.
 Procedure for refinement of zinc containing raw material from impurity metal oxides and impurity metals; furnace for implementation of this procedure / 2389809
Procedure consists in charging zinc containing raw material together with additive of metal aluminium at amount of 0.02-0.05 % of weight of zinc containing raw material into stand of salts melt of composition wt %: NaCl - 56-59, NaF - 22-23, KCl - 11, Na2B4O7 - 4-6, B2O3 - 3-5 at temperature 600-700°C. The furnace consists of a shell made out of refractory steel. A ceramic branch is used for draining refined melt of zinc into pans. The ceramic branch is also used for emptying the furnace of zinc and salts melt during maintenance repairs and emergencies. The bottom of the furnace is lined with refractory non-metallic materials. The shell of a crucible on internal surface is also lined with refractory non-metallic materials at height from the bottom of the furnace up to 500-600 mm; a layer of refractory glue is applied at the joint point of refractory non-metallic lining with internal surface of the shell.
 Duplex-furnace for smelting of manganese alloys from ferrimanganese bases and concentrates and anthropogenic wastes of metallurgy / 2380633
In arch of siphon there are implemented openings or windows for loading of carbon-bearing materials, partition with bottom window or windows for flow of melted slag into siphon is implemented in the form of common end wall for liquid-phase smelting shaft and siphon with electrode(s) and allows window or windows for fume extraction from under arch of siphon, located on level not higher than horizontal axis of top row of tuyeres of liquid-phase smelting shaft, siphon is outfitted by solid transverse partition, installed in its bottom part parallel to common end wall for liquid-phase smelting shaft and siphon at a distance enough for flow of required volume of slag melt from liquid-phase smelting shaft on surface of heated layer of carbon-bearing material, herewith solid transverse partition fully separates siphon from liquid-phase smelting shaft, and its top edge is located higher than horizontal axis of bottom row of tuyeres of liquid-phase smelting shaft.
 Device for gas-thermal oxidation of objects made from titanium and titanium-containing alloys / 2369663
Invention relates to equipment for passivation of metal surfaces, more specifically to devices for gas-thermal oxidation of objects made from titanium and titanium-containing alloys. The device has an oxidation chamber, fitted with a cooling system and a heating system, a unit for feeding gaseous mixture into the oxidation chamber, a unit for outlet of gaseous mixture from the chamber, a chamber for cooling oxidised objects, which has a unit for flowing cooling inert gas medium in and out. The cooling chamber is joined to the oxidation chamber through a rotary valve, made with two hemispherical gates, which can open and close the opening in the rotary valve for joining or separating both chambers.
 Control method of level of top surface of slaggy phase and boundary of slaggy and metallic phase of melt in lift tube tank of iron-and-steel furnace by vanukov or romelt / 2368853
Invention relates to non-ferrous metallurgy field. According to method it is implemented voltage feeding to electroconductive refractory rods, used for slag heating and setting adjusting of current value. It is displaced rod and implemented continuous measurement and comparison of current value through rod with setting. At equality of measured value of current to setting value it is fixed top surface of slaggy or metallic phase of melt in tank of iron-and-steel furnace. In the capacity of electroconductive refractory rod it is used graphitic rod or electrode, used for electroarc heating of melt in tank of iron-and-steel furnace. After achievement of equality of current setting to corresponding measured current values it is checked equality to zero of the first current derivative.
 Plant for object survey under high temperatures / 2367934
Invention is related to testing of objects, comprising explosive and toxic substances, for various thermal effects. Plant comprises working chamber with loading window arranged with the possibility of its overlapping, the following components installed inside chamber - device for fixation of object and at least one fuel header with vortex nozzles, device for fuel supply, tube connected with its one end to fuel supply device, and with the other end - to header, ignition device, additionally, at least one tray installed under header, and at least one pair of additional devices for fuel supply and ignition, every of which is installed at a preset distance from working chamber and is connected accordingly by the first and second additional tubes to tray. On the second additional pipe, upstream ignition device, pipe cooling device is installed.
 Coating (versions), part of gas-turbine engine and protection method of part against damages related to sand effect / 2420612
Heat barrier coating consists of alternating layers of zirconium oxide, which is stabilised with yttrium oxide, and layers of material resistant to impact of molten silicates. External layer resistant to impact of molten silicates can be formed at least of one oxide chosen from the group consisting of lanthanum, cerium, praseodymium, neodymium, promethium, samarium, europium, gadolinium, terbium, dysprosium, holmium, erbium, thulium, ytterbium, lutecium, scandium, indium, zirconium, hafnium and titanium oxides, or can be formed of zirconium oxide stabilised with gadolinium oxide. Besides, metal bonding coating can be located between the base and system of heat barrier coating.
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FIELD: chemistry. SUBSTANCE: furnace has an outer cover, a reaction chamber inside the cover, a heating system and a system for circulating the reagent gas. The outer cover of the furnace and the reaction chamber bound a first volume between the inner side of the cover of the furnace and the outer side of the reaction chamber and a second volume inside the reaction chamber. The first volume is divided into a first part which forms the heating zone which accommodates the heating system and a second part in which the reagent gas is present. The heating zone is hermetically insulated from the second part. The furnace also has a system for circulating inert gas which is made and placed with possibility of feeding inert gas into the heating zone at a rate which provides positive differential pressure relative the pressure of the reagent gas inside the second part of the first volume in which the reagent gas is present in order to prevent passage of the reagent gas into the heating zone. EFFECT: design prevents contact between the reagent gas and the heating system, which increases reliability and longevity of the device. 13 cl, 2 dwg
The technical field to which the invention relates. The present invention generally relates to heat chambers, furnaces, process cameras and similar equipment in which the gas-reactant is introduced as part of manufacturing operations. In a particular example implementation of the invention relates to furnaces for chemical infiltration from the gas phase/chemical vapor deposition (CVI/CVD furnace), in which is introduced a gas-reagent as part of the method of sealing a porous element, such as a porous preform for a brake. The level of technology It is well known the use of heat chambers, furnaces, process cameras and other such equipment, in which as part of technological activity, you enter a gas-reagent. In the future found in the description of the term "furnace" should be understood as a term equally applicable to the heat chambers and other process chambers of this type in General. Example in this respect may serve as infiltration from the gas phase, where represents the precursor gas reactant is introduced into the furnace, in which is placed a porous items, such as, for example, porous billet brake discs, but not limited to data elements. Typically, traditional oven includes an outer casing of the furnace, provided it working space is about or reaction chamber, which is placed to be processed objects or elements, the system for movement of a reagent gas into the furnace and from the furnace, and a heating system for heating at least the inner part of the reaction chamber. Gas-reagent known way to make leak (provide infiltration) into the porous structure of the porous elements. Gas-reagent can be a hydrocarbon gas, such as propane. In one of the famous examples of the gas-reactant is introduced into the inner volume defined by the stack essentially aligned annular billet brake discs placed in the reaction chamber of the furnace. Generally speaking, the gas is forced to move from the inner volume of the stack to the outside of the stack by diffusion through a porous (for example, the fibrous structure of blanks and/or through the gaps between adjacent blanks. By means of a heating system heats at least the inner part of the reaction chamber. Thus, due to the relatively high temperature of the billet brake discs gas-reagent undergoes pyrolysis and leaves decay product on the inner surfaces of the porous structure. In the case of a hydrocarbon gas, for example, the decay product is pyrocarbon, so the result is a carbon composite material (such as the material of the carbon-carbon). Example of a traditional heating system for these stoves can serve as an induction heating system. In this system, the reaction chamber may be made of such material as graphite, in order to play the role of susceptor. It is also envisaged system to provide the necessary magnetic field, for example, as one or more electrical windings, functionally adjacent to at least part of susceptor. When the electric coil is supplied with sufficient AC current, the resulting magnetic field in a known manner causes induction of susceptor. Other traditional heating system is resistive heating, where an electric current passes through a resistive element, which is heated. The use of resistive heating usually involves the use of a resistive element in addition to design, defining the reaction chamber. To increase thermal efficiency as in the case of induction heating systems, and in the case of resistive heating system around the outer part of the reaction chamber may be provided with insulation. However, the gas-reagent introduced into the reaction chamber, tends to leak or diffuse from the reaction chamber into the space between ameesha within the furnace, but outside of the reaction chamber. In particular, in the process CVI/CVD gas-reagent is a precursor deposited decay product (such as a carbide or carbon deposition). If the gas-reagent will reach the insulation or heating systems, these structures can be formed and accumulated precipitation, which causes deterioration in performance, reliability and/or durability. Disclosure of inventions In light of the foregoing, in the CVI/CVD furnace, it is desirable to essentially isolate the heating system (and the corresponding insulation if any) used in the furnace of a reagent gas. With this aim, the present invention involves the task area in the casing CVI/CVD furnace in which the heating system (including related insulation when available) essentially isolated from contact with the gas-reagent used in the CVI/CVD process. In one aspect, the isolated zone (sometimes called herein a "zone heating") in the casing of the furnace physically isolated element walls located within the casing of the furnace so as to define the zone of heating. In an additional aspect, the present invention involves introducing a flow of inert gas in the zone of heat to a slight positive pressure differential relative to the pressure the Yu of a reagent gas inside the reaction chamber. This differential pressure is additionally hinders the penetration of a reagent gas into the zone of heating. Brief description of drawings The present invention can be better understood by consideration of the accompanying drawings, where figure 1 is a schematic view of the cross section of the process furnace of the present invention, which uses an induction heating system; and figure 2 is a partial view of the cross-section, illustrating an alternative use of resistive heating system, as provided in the present invention. The implementation of the invention To simplify the description of the invention first will be described an example of an induction heated furnace. Next, with reference to figure 2 will illustrate the applicability of the present invention to a furnace, using resistive heating. Generally speaking, the furnace 10, is used to process CVI/CVD, includes an outer casing 12 of the furnace, separating the inner part of the furnace 10 from the external environment, and to set it a certain amount. Within the volume of the furnace 10 is provided susceptor 14. As is well known in the art, susceptor, as a rule, is a design, which is heated in the presence of a magnetic field created by an alternating current. Susceptor 14 in a CVI/CVD furnace can in order to contain, for example, one or more walls 16, a floor 18 and the upper element 20, which together define another volume or reaction chamber within the total volume inside the furnace 10. Be processed objects such as porous billet brake discs, placed in a volume of 21 set by susceptor 14. System for heating of the furnace in the General form shown under the reference symbol 22. For example, in the case of an induction heated furnace heating system 22 is one or more conventional electrical windings connected to the external power supply appropriate power. It is assumed that the electrical winding of this type are well known to experts in the art and therefore not illustrated and not described in detail. To increase the efficiency of heating of susceptor 14, on the outer part of one or more surfaces of susceptor 14 provides insulation 23. Does the insulation commonly used in the art, such as thermal insulation material with a ceramic base or isolation of carbon fibers, particularly carbon fibers, forming sequentially stacked layers. In susceptor 14 includes one or more holes 24 for the inlet gas (for simplified what I image in figure 1 shows one hole 24 for the inlet gas). Gas-reagent, such as hydrocarbon gas, is introduced into the furnace 10 through a pipe 26, which crosses the wall 12 of the furnace from the outside. The pipe 26 at least coincides with the hole 24 for the intake of gas and may attach to him or about him by any suitable means, such as bolts or by welding. In a General sense, it is preferable that the boundary between the pipe 26 and susceptor 14 was only a small trickle of a reagent gas or not there is any leakage. The flow of a reagent gas through the pipe 26 shown in figure 1 by the arrow labeled A. Typically, the gas-reagent produced (using the normal ways of moving gas, such as fans, suction blowers, etc. which are not shown) or in any other way from the working space through one or more holes 28 to release gas as shown by arrows C. Further, the gas-reagent leaves or is forced to exit from the furnace 10 through one or more editions of furnace 30, as generally shown by arrows C. In accordance with the exemplary embodiment of the present invention, the internal volume of the furnace defined by the casing 12 may be divided in such a way as to define the boundaries of the above-mentioned zone heating. For example, as seen in IG, provided by circular "bar", or wall 32, which runs in the radial direction between the inner surface of the casing 12 and the outer surface of susceptor 14. The wall 32 is stationary fixed by means of conventional methods of fixation, suitable for operating conditions within the furnace 10. More specifically, the wall 32 is sealed (for example, by welding or the use of physical sealing elements) as its inner edge and the outer edge in the radial direction so that as a consequence turned out completely gas-tight seal preventing the passage of gas. It is desirable that the wall 32 contains an Assembly of layers, for example, in the form of a stack of rigid and/or flexible ceramic layers. Inert gas, such as argon or nitrogen, is fed to the heat through the pipe 34 for supplying an inert gas, as shown in figure 1 by the arrow D. The flow (flow) D inert gas may be regulated traditional valve 36. With this adjustment of the valve 36 can receive a stream D of gas, which will support in the area of heating a predetermined pressure P1 (designated schematically by the sensor 38 pressure). Parallel to this, another pressure sensor 40 measures the pressure P2 in another part of the amount specified in the casing 32 PE and, which contains a gas-reagent (sometimes called herein a "zone of reagent"). Defined this way, the pressure values P1 and P2 can be transferred together to the valve controller 42 (preferably automatic valve controller), so that D flow of inert gas maintained given a positive differential pressure in the zone of heat relative to the rest of the volume in the casing 10 of the furnace. For example, supported the differential pressure can be from about +0.5 to approximately +5 millibars in favor of zone heating, and more specifically from about +1 to about +2 millibar in favor of zone heating. This slight positive pressure in the zone of heating also prevents any leakage or other receipt of a reagent gas into the zone of heating. As mentioned above, preferably the automatic detection of the pressures P1 and P2. For example, the differential pressure between the pressures defined by each of the sensors 38, 40 pressure, can automatically be calculated at regular intervals and transmitted to the valve controller 42. There's this result can be used to automatically regulate the flow of inert gas in the zone of heating. It should be understood that the flow of inert gas, in addition, can be controlled. This unusually high consumption inert the gas to maintain the required pressure in the district heating should be taken as a sign of a gas leak in one piece design zone heating, in particular through the wall 32. This definition can be used for alarm as perceived by the user, or it can be used as a signal to trigger the control system to automatically start the response. The application of the present invention in relation to the furnace, which instead is heated using resistive heating system, essentially no different from the use in the case of inductively heated furnace. Figure 2 is a partial cross-sectional view illustrating an example of the placement of elements in a resistive heating system, however, in principle, apply the same ideas, as explained above. It is part of the volume defined by the casing 12' of the furnace, where the resistive heating system, separated by ensuring the permanence from the rest of the volume of the casing 12' of the furnace where the gas-reagent. Reaction chamber 14' is located in the casing 12' of the furnace, there are objects to be processed. Then one or more resistive elements 25 can be placed in contact with the outer part of the reaction chamber 14' or at least near it. The resistive elements 25 can have different traditional designs. In one typical example, the resistive elements pre whom are elongated elements. As in an induction heated furnace, to increase thermal efficiency of the furnace may be provided in the insulation layer 23'. However, despite the different location of the heating system in the case of resistive heating, the inside of the casing 12' applies the same General configuration as that of the induction heated furnace. It is the resistive elements of the heating system is similarly isolated from the part of the furnace containing gas-reagent, therefore, the description of the placement of the dividing wall and inert gas systems not repeated here. Although the present invention has been described above with reference to certain specific examples are for purposes of illustration and explanation, it should be understood that the invention is not limited by reference to specific details of these examples. More specifically, a specialist in the art should easily understand that, in preferred embodiments, the implementation can be performed modifications and changes without departing from the scope of the invention described in the formula. 1. Furnace for chemical infiltration from the gas phase or chemical deposition from the gas phase, containing an outer casing (12, 12') of the furnace, the reaction chamber (14, 14')located in the casing of the furnace and is designed to be receiving processing element, the heating system (22) DL the heat, at least the reaction chamber and the circulation system of a reagent gas, intended for the introduction of a reagent gas into the reaction chamber from the outside casing of the furnace and for transmission of a reagent gas from the reaction chamber to the outside casing of the furnace, 2. Furnace according to claim 1, characterized in that it contains the first sensor (38) pressure made and placed with the ability to determine pressure is (P1) in the area of heating, the system of circulation of the inert gas contains a controller (36) stream functioning in accordance with the pressure specified in the zone of heat, thus, to set the flow rate of inert gas, providing a predetermined pressure in the zone of heating. 3. Furnace according to claim 2, characterized in that it contains the second sensor (40) pressure made and placed with the ability to determine the pressure (P2) in the second part of the first volume, which contains a gas-reagent, while the flow circulation system of the inert gas is made and placed with the ability to control the flow of inert gas into the zone heating the at least partially based on the pressure (P2)defined in the second part of the first volume, thereby to obtain a predefined positive pressure differential between the zone of heating and the second part of the first volume. 4. Furnace according to any one of claims 1 to 3, characterized in that it contains the alarm device for signalling the change of a flow of inert gas required to maintain a given pressure in the zone of heating. 5. Furnace according to any one of claims 1 to 3, characterized in that the heating system is an inductive heating system. 6. Furnace according to any one of claims 1 to 3, wherein the heating system comprises a resistive heating with the system. 7. Furnace according to any one of claims 1 to 3, characterized in that the reaction chamber contains one or more elements (16) of the wall element (18) of the floor and the top element (20). 8. Furnace according to claim 7, characterized in that it contains a pipe (26) for intake of a reagent gas, located with the possibility of transfer of a reagent gas from the outside of the furnace casing to the outlet (24) for intake of a reagent gas, performed in the reaction chamber. 9. Furnace according to claim 7, characterized in that it is equipped with a hole (28) for release of a reagent gas, performed in the reaction chamber. 10. Furnace according to claim 8, characterized in that it is equipped with a hole (28) for release of a reagent gas, performed in the reaction chamber. 11. Oven according to claim 9, characterized in that it contains a release (30) of a reagent gas, made in the casing of the furnace. 12. Furnace according to claim 2 or 3, characterized in that it contains the controller for automatic control of flow depending on the pressure defined in the zone of heat, or pressure, as defined in the second region of the first volume, or according to both of these pressures. 13. Furnace according to claim 1, characterized in that it contains a separating wall (32) for separating zone heat from the second part of the first volume, and a separating wall includes at least one ceramic layer.
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