Cooling system for a reflow furnace

    公开(公告)号:US11679444B2

    公开(公告)日:2023-06-20

    申请号:US17271461

    申请日:2019-08-27

    摘要: Disclosed in the present application is a cooling system for a reflow furnace, the reflow furnace comprising a heating zone, and the cooling system being used to regulate a temperature of the heating zone, the cooling system comprising: at least one gas inlet and at least one gas discharge port, the at least one gas inlet and the at least one gas discharge port being disposed on the heating zone; a blowing apparatus; at least one gas intake pipeline, an inlet of the at least one gas intake pipeline being connected to the blowing apparatus, an outlet of the at least one gas intake pipeline being connected to the at least one gas inlet, the at least one gas intake pipeline being able to controllably establish fluid communication between the blowing apparatus and the at least one gas inlet; and at least one gas discharge pipeline, an inlet of the at least one gas discharge pipeline being connected to the at least one gas discharge port, an outlet of the at least one gas discharge pipeline being connected to the outside, and the at least one gas discharge pipeline being able to controllably establish fluid communication between the at least one gas discharge port and the outside. The cooling system of the present application can shorten the time taken for the reflow furnace to change from a higher heating temperature to a lower heating temperature.

    Treatment of expansible materials to form lightweight aggregate
    7.
    发明授权
    Treatment of expansible materials to form lightweight aggregate 失效
    处理可膨胀材料以形成轻质骨料

    公开(公告)号:US4906183A

    公开(公告)日:1990-03-06

    申请号:US331161

    申请日:1989-03-31

    摘要: Expansion of granular or particulate material is effected by supplying such material, for instance slate chips, at a charging zone CZ of a kiln 10, to the upper surface of a rotating annular hearth 12 so as to lie thereon in a uniform layer up to about three chips in thickness. The hearth 12 is rotating in the direction of the arrow 96, and the chips face thereon just after a preheating zone PHZ. The chips are carried successively through a treatment zone TZ wherein they are subjected to heat from regenerative burner arrangements 68, 70 and 64, 66 beneath hood 44, to a discharge zone DZ whereat they are loosened by a reciprocating rake 80, 82 and are blown off the hearth 12 and into a receiver 88 by air jets from radially directed nozzles 78 supplied by way of a manifold 76. The kiln, and its manner of use, enables expansible material, such as slate chips, to be substantially fully expanded and thereby achieve a product, suitable for use as a lightweight aggregate, of minimum possible density.

    Random access oven
    8.
    发明授权
    Random access oven 失效
    随机存取烤箱

    公开(公告)号:US4834649A

    公开(公告)日:1989-05-30

    申请号:US197986

    申请日:1988-05-24

    IPC分类号: F27B9/02 F27B9/12 F27B9/24

    摘要: A random access oven system including an oven, a vestibule, a loading conveyor, and a cooling conveyor. A plurality of load carriers, arranged in one or more tiers, are translated within the oven by one or more drive chains, in response to remotely generated commands. Loads to be treated in the oven are queued on the loading conveyor and are supplied to the vestibule in response to remotely generated commands. Any desired load carrier may be brought to a position adjacent the vestibule where the load carried by the carrier may be transferred to a conveyor within the vestibule, or a load within the vestibule may be transferred to the load carrier. After exiting the oven following heat-treatment, a load within the vestibule may be transferred onto the cooling conveyor. After a desired cooling period, each load on the cooling conveyor may be transferred out of the inventive system, for example to an adjacent conveyor. Any load may be removed from the oven after a desired time period, while all other loads remain in the oven. Thus, a variety of loads may simultaneously be subjected to different heat-treatments in the oven, with the constraint that all loads will be subjected to the same oven atmosphere and temperature while resident in the oven.

    摘要翻译: 一种随机进料炉系统,包括烤箱,前庭,装载输送机和冷却输送机。 响应于远程生成的命令,通过一个或多个驱动链在多个加载载体中排列成一层或多层,在烘箱内转换。 在烤箱中处理的负载在装载输送机上排队,并根据远程生成的命令提供给前庭。 任何期望的负载承载器可以被带到与前庭相邻的位置,其中由承载器承载的负载可以被传送到前庭内的输送机,或者前庭内的负载可以被传递到负载承载器。 在热处理后离开烤箱后,前庭内的负载可能被转移到冷却输送机上。 在期望的冷却期间之后,冷却输送机上的每个负载可以被转移出本发明的系统,例如传送到相邻的输送机。 任何负载可以在所需时间段之后从烘箱中取出,而所有其他负载保持在烤箱中。 因此,各种负载可以同时在烘箱中进行不同的热处理,同时限制所有负载在驻留在烘箱中时都经受相同的烘箱气氛和温度。