Gas preheater of sintering furnace of electronic components

Abstract

The invention relates to a gas preheater of a sintering furnace of electronic components, belonging to the technical field of supporting facilities of the sintering furnace of electronic products and comprising a horizontal barrel body with a heating cavity, a group of heating elements, a wet gas lead-in joint and a wet and hot gas lead-out joint, wherein the left end of the barrel body is a closed end; the closed end is barricaded with a shunt cavity by a shunt plate; the shunt cavity is communicated with the heating cavity; the right end of the barrel body is an open end; the open end is matched with a sealing cover; the group of heating elements extends into the heating cavity and is fixed with the sealing cover; the wet gas lead-in joint is fixed with the left end of the barrel end and is communicated with the shunt cavity; and the wet and hot gas lead-out joint is fixed with the right end of the barrel body and is communicated with the heating cavity. The invention saves manufacturing cost, reduces manufacturing difficulty, saves manufacturing materials, is beneficial to saving energy sources and embodies utilization convenience and economic cheapness.

Description

technical field [0001] The invention belongs to the technical field of supporting facilities for sintering kilns for electronic products, and specifically relates to a gas preheating device for sintering furnaces for electronic components, which is used for air furnaces and atmosphere furnaces such as nitrogen furnaces, argon furnaces and bell furnaces. Required gas preheating. Background technique [0002] As is well known in the industry, kilns used for sintering electronic products such as multilayer chip ceramic capacitors are usually equipped with a gas preheater, and the humidifying device such as a humidifying cylinder is humidified by the gas preheater. The gas is preheated to a preset temperature before being fed into the furnace. [0003] Chinese Utility Model Patent No. ZL200520077706.4 discloses a gas preheater for a bell furnace (proposed by the applicant). The advantages of weighing, the specific structure is recorded in lines 19-24 on page 1 of the manual, a...

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Problems solved by technology

Looking at the structure and working principle of this patent, it can be found that the technical solution of this patent has the following deficiencies: First, there is a phenomenon of taking care of one thing and losing another. In order to preheat independently by a group of smaller preheating devices, the volume of the preheating device can be reduced, which provides convenience for installation on the production site and low maintenance and replacement costs. The so-called loss is due to the preheating of each unit The heating devices are all composed of shells, heating elements, thermocouples and valves, etc., so the manufacturing cost is high and the installation time is long; second, the thermal efficiency of decentralized preheating cannot achieve the technical effect that people expect; third, the workload of management and maintenance is large , because the furnace body is equipped with a set of preheating devices, it is necessary to carry out regular or irregular inspections in daily use; the fourth is the high cost of use, for example, because the thermocouples of each preheating device need to be checked regularly It is measured and inspected by the technical supervision department (also known as the metrology and inspection agency), so the inspection cost spent by the user unit is large

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