A production process of a membrane heater with dual functions of hot water and steam

Abstract

The invention discloses a production process for a membrane heater with dual-purpose functions of hot water and steam, comprising the following steps: S1, expanding the guide pipe or punching so that the guide pipe has outwardly protruding guides on the outer wall of the guide pipe. bulge; S2, the openings at both ends of the guide pipe are welded with a head; S3, the welded guide pipe is nested in the heating base pipe for assembly and positioning, and after assembly and positioning, it is placed in the die of the punching machine to heat One end of the base tube is punched from the outside to the inside. After stamping, the die is stretched and extruded along the axis of the heated base tube toward the other end of the heated base tube. , Blow the brazing material into the flow channel along one end of the guide protrusion, and fill it in the contact gap between the guide tube and the base tube for brazing; High, no water channeling, no peculiar smell, convenient processing, high production efficiency.

Description

technical field [0001] The invention relates to the technical field of membrane heaters, in particular to a production process of a membrane heater with dual functions of hot water and steam. Background technique [0002] Membrane heaters are widely used in drinking water heating fields such as water dispensers, purifiers, tea makers and coffee machines. Membrane heaters usually use tubular membrane heating tubes to heat drinking water. The function of dual-use water and steam, the membrane heating tube heats cold water into water vapor, and the heating surface of the membrane heating tube needs to have a closed water flow cavity. The existing membrane heating tube usually has a plurality of pipe fittings nested on the heating surface of its inner wall. It forms a closed water flow cavity with the sealing rubber parts, but the flow channel of the processed membrane heating tube is not tightly sealed, the structure is complex, the processing of the membrane heating tube is in...

AI Technical Summary

Problems solved by technology

[0002] Membrane heaters are widely used in drinking water heating fields such as water dispensers, pure drinking machines, tea machines and coffee machines. Membrane heaters usually use tubular structure membrane heating tubes to heat drinking water. Existing membrane heating tubes can have thermal The function of water and steam is dual-purpose. The heating surface of the membrane heating tube needs to have a closed water flow cavity to heat the cold water into steam by the membrane heating tube. The existing membrane heating tube is usually nested with multiple pipe fittings on the heating surface of its inner wall. It forms a closed water flow cavity with the sealing rubber parts, but the flow channel of the processed film heating tube is not tightly sealed, the structure is complex, the processing of the film heating tube is inconvenient, the production efficiency is low, and the plastic parts in the film heater make the heating The hot water and steam have peculiar smell, the continuous flow of water or steam is not smooth, there is water channeling, the structure of the membrane heating tube is unstable, the structural strength is low, and the service life is short.

Images