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Thermal insulation circulation system for brazing furnace

A circulating system and brazing furnace technology, applied in welding equipment, electric heating devices, auxiliary devices, etc., can solve the problems of uneven heating of the workpiece surface, inability to heat and cool, and increase working time, so as to improve the quality of workpiece processing and improve the The effect of brazing quality and power consumption reduction

Inactive Publication Date: 2018-06-29
张跃
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] When the existing brazing furnace heats or cools the hollow workpiece, different equipment or devices are used to heat and cool the surface of the workpiece, and usually a plurality of chambers are arranged in the furnace body, such as a heating chamber and a cooling chamber, The structure of the furnace body is complicated, the volume is large, the weight is large, and the cost is high
In addition, the surface of the workpiece is usually radiantly heated by electric heating elements. The heating is slow, and the surface of the workpiece is heated unevenly.

Method used

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  • Thermal insulation circulation system for brazing furnace
  • Thermal insulation circulation system for brazing furnace

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Such as figure 1 and figure 2 Shown: a brazing furnace thermal insulation circulation system, including a furnace body 1, a workpiece 2 is arranged in the furnace body 1, and the workpiece 2 is a hollow structure that allows gas to flow in and out from the inside. The outside of body of furnace 1 is provided with heater 3 and cooler 4, and heater 3 and cooler 4 are connected inlet 11 and outlet 12 of furnace cavity through circulation pipeline 5, and heater 3 and cooler 4 are connected in a circulation pipeline 5 On the two branches, that is, the heater branch 51 and the cooler branch 52, the two ends of the heater branch 51 and the cooler branch 52 are connected with a front electric three-way valve 53 and a rear electric three-way valve 54 , to switch between the hot air channel and the cold air channel, and the valve openings of the front electric three-way valve 53 and the rear electric three-way valve 54 are adjustable, so that the flow of gas can be adjusted. T...

Embodiment 2

[0050] The difference with Embodiment 1 is that the heater and the cooler are connected to two branches of a circulation pipeline, that is, the heater branch and the cooler branch, and a first electric valve is provided at the inlet of the heater, and the cooler A second electric valve is provided at the entrance, and the valve openings of the two electric valves can be adjusted. When the first electric valve is controlled to open, the circulation pipeline forms a hot air passage; when the second electric valve is controlled to open, the circulation pipe forms a cold air passage.

[0051] A sealed insulation sleeve is sheathed on the branch of the heater, and an insulation sleeve is also sleeved on the part of the pipe connecting the inlet of the cooler to the branch of the cooling part. The two electric valves are both arranged in the airtight chamber, and both sides of the airtight chamber are connected with circulation pipes and insulation sleeves.

[0052] There are press...

Embodiment 3

[0055] The difference with Embodiment 1 or Embodiment 2 is that the heater and the cooler are respectively connected to a circulation pipe, that is, the heater pipe and the cooler pipe, the heater pipe is arranged on the upper side of the furnace body, and the cooler pipe is arranged on the furnace body On the lower side of the furnace, the two pipelines work independently without affecting each other. The two pipelines are respectively connected to the inlet and outlet of the furnace chamber. The heater pipeline and the cooler pipeline are respectively connected to the induced draft fan to transport the gas into the pipeline.

[0056] A third electric valve is arranged at the inlet of the heater, and a fourth electric valve is arranged at the inlet of the cooler.

[0057] The settings of the insulation sleeve, the pressure gauge and the vacuum valve are the same as in Embodiment 2.

[0058] Other structures are with embodiment 1.

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Abstract

The invention provides a thermal insulation circulation system for a brazing furnace. The thermal insulation circulation system for the brazing furnace comprises a furnace body, a circulation pipelineand a heating part; the circulation pipeline is arranged outside the furnace body and connected between an inlet and an outlet of the furnace body; a power device is arranged between the furnace bodyand the circulation pipeline; the two ends of the heating part are connected with the circulation pipeline; gas heated by the heating part is directed into an inner cavity of a workpiece through thecirculation pipeline by the power device and the gas subjected to heat exchanging flows into the circulation pipeline from the outlet again for heating the workpiece cyclically; a sealed thermal insulation sleeve pipe is arranged at the exterior of the circulation pipeline in a sleeving manner. The system has the advantages that the efficiency is high, the weight reduction can be realized, the thermal insulation effect is good, the fault detection efficiency is high, the safety is high, the workpiece can be evenly heated or cooled, the range of application is wide and the like.

Description

technical field [0001] The invention relates to the technical field of brazing, in particular to a heat preservation circulation system of a brazing furnace. Background technique [0002] When the existing brazing furnace heats or cools the hollow workpiece, different equipment or devices are used to heat and cool the surface of the workpiece, and usually a plurality of chambers are arranged in the furnace body, such as a heating chamber and a cooling chamber, The structure of the furnace body is complicated, the volume is large, the weight is large, and the cost is high. In addition, the surface of the workpiece usually uses electric heating elements for radiant heating. The heating is slow and the surface of the workpiece is heated unevenly. . Contents of the invention [0003] The purpose of the present invention is to overcome the above-mentioned deficiencies of the prior art and provide a heat preservation brazing furnace with high efficiency, light weight, good hea...

Claims

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Application Information

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IPC IPC(8): B23K3/04B23K3/08B23K1/008
Inventor 张跃
Owner 张跃