EP4357711A1 - Installation pour le traitement thermique de fabrications d'articles - Google Patents
Installation pour le traitement thermique de fabrications d'articles Download PDFInfo
- Publication number
- EP4357711A1 EP4357711A1 EP23189373.6A EP23189373A EP4357711A1 EP 4357711 A1 EP4357711 A1 EP 4357711A1 EP 23189373 A EP23189373 A EP 23189373A EP 4357711 A1 EP4357711 A1 EP 4357711A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- oven
- longitudinal sidewall
- casing
- sidewall
- hot air
- 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.)
- Pending
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B15/00—Machines or apparatus for drying objects with progressive movement; Machines or apparatus with progressive movement for drying batches of material in compact form
- F26B15/10—Machines or apparatus for drying objects with progressive movement; Machines or apparatus with progressive movement for drying batches of material in compact form with movement in a path composed of one or more straight lines, e.g. compound, the movement being in alternate horizontal and vertical directions
- F26B15/12—Machines or apparatus for drying objects with progressive movement; Machines or apparatus with progressive movement for drying batches of material in compact form with movement in a path composed of one or more straight lines, e.g. compound, the movement being in alternate horizontal and vertical directions the lines being all horizontal or slightly inclined
- F26B15/14—Machines or apparatus for drying objects with progressive movement; Machines or apparatus with progressive movement for drying batches of material in compact form with movement in a path composed of one or more straight lines, e.g. compound, the movement being in alternate horizontal and vertical directions the lines being all horizontal or slightly inclined the objects or batches of materials being carried by trays or racks or receptacles, which may be connected to endless chains or belts
Definitions
- the present invention relates to a plant for the heat treatment of manufactured articles.
- Plants for the heat treatment of manufactured articles typically small semi-finished products from previous mechanical processing stations downstream of which heat treatments are required to complete and consolidate specific properties and characteristics required by the finished product, have long been on the market.
- EP 3303961B1 teaches a system for the hot air heat treatment of friction elements, in particular brake elements such as brake pads.
- the technical task proposed by the present invention is, therefore, to realise a plant for the heat treatment of manufactured articles that can eliminate the complained of technical drawbacks of the known technique.
- one aim of the invention is to realise a system for the hot-air heat treatment of manufactured articles that is compact, ensures proper homogenisation of the heating fluid and consistent heat transfer to the manufactured articles being processed.
- a further purpose of the present invention is to realise a plant for the hot-air heat treatment of manufactured articles that is compact, simple and energy-efficient.
- a facility for heat treating manufactured articles comprising a longitudinal casing, a convection tunnel oven positioned longitudinally in the casing, a plurality of stackable trays wherein the manufactured articles may be housed, comprising a conveyor configured to transport a single row of tray stacks through the oven and a forced hot air circulation circuit through the oven; wherein the casing has a first and a second longitudinal sidewall; wherein the oven has a tray stack inlet end, a tray stack outlet end, a first longitudinal sidewall provided with hot air outlet openings and a second longitudinal sidewall provided with hot air inlet openings; wherein the homologous sides of the casing and the oven face each other; wherein each sidewall of the casing has a lower portion facing the homologous sidewall of the oven and an upper portion extending vertically to an upper portion of the homologous sidewall of the oven; wherein the forced hot air circulation circuit comprises a horizontal flame burner for heating the air,
- the ascending channelling includes a gap between the lower portion of the second sidewall of the casing and the homologous sidewall of the oven.
- the descending ductwork comprises a wall of the heating chamber that extends upwards from the first sidewall of the oven and delimits a cavity with the first sidewall of the casing.
- the ascending ducting provides baffles to the fan intake, between which the burner is positioned.
- the artefacts are brake pads.
- artefacts are friction materials.
- Plant 1 for the heat treatment of artefacts comprises a longitudinal enclosure 2, a convection tunnel oven 3 positioned inferiorly and longitudinally in the enclosure 2, and a plurality of stackable trays 4 where the artefacts can be stored.
- items subjected to heat treatment include friction materials, typically including brake pads.
- Plant 1 comprises a conveyor 50 configured to transport a single row of stackable tray stacks 4 through the oven 3, which has an inlet end of the tray stacks and an outlet end of the stackable tray stacks 4 and where a forced hot air circulation circuit provides heat treatment of the products.
- Enclosure 2 has a first longitudinal sidewall 2a and a second longitudinal sidewall 2b.
- Oven 3 has a first longitudinal sidewall 3a and a second longitudinal sidewall 3b where the homologous sidewalls of enclosure 2 and oven 3 face each other.
- each longitudinal sidewall of the casing 2a, 2b has a lower portion 2a', 2b' directly facing the homologous sidewall 3a, 3b of the oven 3 and an upper portion 2a", 2b" extending vertically to a higher elevation of the homologous sidewall 3a, 3b.
- the first longitudinal sidewall 3a is equipped with hot air inlet openings and the second longitudinal sidewall 3b is equipped with hot air outlet openings.
- the forced hot air circulation circuit comprises a horizontal flame burner 20 for heating the air and a fan 5 positioned in the upper part of the casing 2 above the burner 20: at the first sidewall 3a of the oven 3 there is a downward ducting 6 of the hot air from the supply of the fan 5, while at the second sidewall 3b of the oven 3 there is an upward ducting 7 of the hot air to the intake of the fan 5.
- the ascending duct 7 comprises a cavity 9 bounded by the lower portion 2b' of the second sidewall 2b of the casing 2 and the homologous sidewall 3b of the oven 3.
- the ascending ducting 7 includes a heating chamber 8 within which the burner 20 is positioned.
- the heating chamber 8 is bounded by the upper portion 2b" of the second sidewall 2b of envelope 2.
- the horizontal flame burner 20 protrudes from this upper portion 2b" of the second sidewall 2b of the enclosure 2.
- the descending ducting 6 comprises a wall 10 of the heating chamber 8 extending upwards from the first sidewall 3a of the oven 3 and bordering a cavity 11 with the first sidewall 2a of the casing 2.
- the fan 5 is a centrifugal fan with vertical axial suction and horizontal discharge arranged in the upper part of the casing 2, above the heating chamber 8, and in a central position with respect to the longitudinal development of the oven 3 and in an off-centre position towards the second sidewall 3b of the oven 3 with respect to the transverse development of the oven 3.
- the ascending ducting 7 includes baffles 12 that direct the flow of hot air to the fan intake 5.
- baffles 12 there are at least two baffles 12 between which the burner 20 is positioned.
- the baffles 12 surmount the gap 9 between the lower portion 2b' of the second sidewall 2b of the casing 2 and the homologous sidewall 3b of the oven 3.
- the baffles 12 are confined in a region of the heating chamber 8 adjacent to the second sidewall 2b of the casing 2, are tapered from top to bottom, and converge at an opposite angle towards the fan intake 5.
- the baffles 12 are configured and arranged to perform at least a tripartition of the flow of hot air conveyed to the intake of fan 5 into a first part of flow taken from the zone of the inlet end of the oven 3, a second part of flow taken from the zone of the outlet end of the oven 3 and a third part of flow taken from the central zone of the oven 3.
- the hot air inlet openings provided in the first longitudinal sidewall 3a are horizontally aligned with the gaps between the trays of stacked artefacts and are equipped with horizontal diffusers, e.g. horizontal vents extending along the direction of advancement of the trays, which horizontally direct the flow of hot air.
- the fan 5 positioned in the upper part of the casing 2 draws in air from the heating chamber 8 at the bottom; the supply air of the fan 5 is suitably conveyed into the downward ducting 6 in the cavity 11 defined by the wall 10 and the first sidewall 2a of the casing 2 in continuity with a lower section defined by the first longitudinal sidewall 3a of the oven 3 and the first sidewall 2a of the casing 2.
- the first longitudinal sidewall 3a is provided with appropriate hot air inlets in the oven 3 to the plurality of stacking tray stacks 4 where the manufactured articles are housed in the process.
- the hot air passes through the trays and laps at the artefacts, transferring the expected amount of heat, and reaches the second longitudinal sidewall 3b, which is equipped with openings for the hot air to exit the oven 3 towards the ascending duct 7.
- the ascending duct 7 comprises a cavity 9 between the second longitudinal sidewall 3b and the lower portion 2b' of the second sidewall 2b of the casing 2.
- the ascending ducting 7 continues above and includes a heating chamber 8 inside which the flame burner 20 is positioned.
- At least two baffles 12 are provided in the ascending ducting 7 and inside the heating chamber 8 which convey the air heated by the flame burner 20 to the fan intake 5 located above the heating chamber 8.
- the baffles 12 contribute to the acceleration of the heated air towards the fan 5 inlet and to the homogenisation of the temperature of the heated fluid mass upstream of the fan 5 outlet towards the downward ducting 6.
- the forced-air circuit being configured and arranged in such a way that it cannot have a frontal interaction with the flame delivered by the burner 20, prevents the flame from tearing and the efficiency and effectiveness of the burner 20 from being affected.
- the forced air circuit in the ascending section, is also extremely linear and free of loops or tortuosity which could, if present, lengthen the air path between the oven exit and the fan intake as well as increase pressure drops with negative effects on energy consumption.
- a system for the heat treatment of manufactured articles according to the invention is particularly advantageous to ensure, with the forced circulation of the heated air thus conceived, an even distribution of the temperature in the heating fluid and thus of the heat transferred to the manufactured articles in the process.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Baking, Grill, Roasting (AREA)
- Tunnel Furnaces (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT102022000021489A IT202200021489A1 (it) | 2022-10-18 | 2022-10-18 | Impianto per il trattamento termico di manufatti |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4357711A1 true EP4357711A1 (fr) | 2024-04-24 |
Family
ID=84942977
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP23189373.6A Pending EP4357711A1 (fr) | 2022-10-18 | 2023-08-03 | Installation pour le traitement thermique de fabrications d'articles |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP4357711A1 (fr) |
| IT (1) | IT202200021489A1 (fr) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060168842A1 (en) * | 2005-01-31 | 2006-08-03 | Sprague Michael M | Heat recovery and ventilation system for dryers |
| ITMI20111864A1 (it) * | 2011-10-13 | 2013-04-14 | Angelo Cremona S P A | Tunnel di essiccamento per essiccare sfogliati di legno e altri pezzi da essiccare |
| US20180209736A1 (en) * | 2017-01-23 | 2018-07-26 | Kiln Drying Systems & Components, Inc. | Vertically Integrated Dual Return Assembly |
| CN214458250U (zh) * | 2021-02-26 | 2021-10-22 | 杭州众汇工业炉有限公司 | 一种高精度铜合金棒材的层流退火装置 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10845121B2 (en) | 2015-06-05 | 2020-11-24 | Itt Italia S.R.L. | Method and plant for the thermal treatment of friction elements, in particular brake pads |
-
2022
- 2022-10-18 IT IT102022000021489A patent/IT202200021489A1/it unknown
-
2023
- 2023-08-03 EP EP23189373.6A patent/EP4357711A1/fr active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060168842A1 (en) * | 2005-01-31 | 2006-08-03 | Sprague Michael M | Heat recovery and ventilation system for dryers |
| ITMI20111864A1 (it) * | 2011-10-13 | 2013-04-14 | Angelo Cremona S P A | Tunnel di essiccamento per essiccare sfogliati di legno e altri pezzi da essiccare |
| US20180209736A1 (en) * | 2017-01-23 | 2018-07-26 | Kiln Drying Systems & Components, Inc. | Vertically Integrated Dual Return Assembly |
| CN214458250U (zh) * | 2021-02-26 | 2021-10-22 | 杭州众汇工业炉有限公司 | 一种高精度铜合金棒材的层流退火装置 |
Also Published As
| Publication number | Publication date |
|---|---|
| IT202200021489A1 (it) | 2024-04-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP3105522B1 (fr) | Séchoir à grains hybride à flux continu | |
| US8276579B2 (en) | Hot-air furnace module and hot-air furnace | |
| EP1487281B1 (fr) | Four a convoyeur avec distribution d'air charge d'humidite et procede | |
| KR930004695A (ko) | 처리증기를 사용하는 간편하고 고용량인 조리용 오븐 | |
| MXPA06002940A (es) | Horno transportador con retorno de aire mejorado y metodo. | |
| CN102471823B (zh) | 用于连续烧结球团化矿物材料的方法和带式烧结设备 | |
| AU680567B2 (en) | Conveyor oven with improved air flow | |
| EP4357711A1 (fr) | Installation pour le traitement thermique de fabrications d'articles | |
| JP2002544468A (ja) | 帯状または板状の被乾燥物のための乾燥機 | |
| CN115245178B (zh) | 隧道式烤箱 | |
| TWI695152B (zh) | 烘箱、用於將氣體分佈於烘箱的排出噴嘴板、及操作烘箱的方法 | |
| US20200088468A1 (en) | Roasting Furnace for Producing Industrial Catalyst | |
| CN101553584B (zh) | 用于悬浮引导幅状材料的设备 | |
| JP7310054B2 (ja) | ボードを乾燥するための方法及び装置 | |
| EP4624847A1 (fr) | Appareil pour le traitement thermique d'articles | |
| US20190373899A1 (en) | Conveyor baking oven for continuous baking operation | |
| CN102782431A (zh) | 用于热处理连续输送的片材的装置和方法 | |
| JP6725503B2 (ja) | センターツーエンド繊維酸化炉の改良された供給プレナム | |
| CN111655641B (zh) | 用于连续热处理药用玻璃容器的设备和方法 | |
| CN103689299A (zh) | 烹饪方法和用于在可堆叠托盘里烹饪食品的炊具 | |
| EP1167907A1 (fr) | Installation pour le séchage continu de produits en brique | |
| CN109906289B (zh) | 包括用于分配通过其中气体的排放喷嘴板的炉以及操作炉的方法 | |
| US12429282B2 (en) | Grain dryer with bypass air control | |
| KR102723651B1 (ko) | 다단 구조를 가지는 부산물 고속건조시스템 | |
| CN112352799B (zh) | 一种烘烤炉循环系统 |
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 ME 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: REQUEST FOR EXAMINATION WAS MADE |
|
| 17P | Request for examination filed |
Effective date: 20240510 |
|
| RBV | Designated contracting states (corrected) |
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 ME MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
| GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: GRANT OF PATENT IS INTENDED |