Instrument box electric heater with quick heat conduction

Abstract

The invention relates to an instrument box electric heater with quick heat conduction, which is mainly used for protecting freeze and preserving heat of instrument boxes in the industries such as petroleum, chemical engineering, medicaments and the like. The instrument box electric heater comprises an aluminium section radiating block (1) and a cast aluminium electric heater (2); the center of the aluminium section radiating block (1) is provided with a through hole (11); the outer edge of the aluminium section radiating block (1) is provided with two transverse bars (12) which are symmetrically arranged on the left and right sides of the outer edge of the aluminium section radiating block (1); the two transverse bars (12) are all provided with a plurality of first tooth pieces; the first tooth pieces (13) are divided into two rows; the two rows of first tooth pieces (13) are symmetrically arranged on front and back sides of the transverse bars (12) and are perpendicular to the transverse bars (12); the outer edge of the aluminium section radiating block (1) is also provided with two second tooth pieces (14) which are symmetrically arranged in the middle of the outer edge of the aluminium section radiating block (1) in a front and back mode and are parallel to the first tooth pieces (13); and the aluminium section radiating block (1) is sleeved on the cast aluminium electric heater (2). The instrument box electric heater has the characteristics of small volume, uniform radiating, quick heat conduction, large radiating area and the like.

Description

(1) Technical field [0001] The invention relates to an electric heater for a meter box. It is mainly used in the antifreeze and heat preservation of instrument boxes in petroleum, chemical, pharmaceutical and other industries. It can work in explosive gas environments. It can also be used in oil well wellhead insulation boxes. It belongs to the technical field of electrothermal devices. (2) Background technology [0002] Working principle of instrument box electric heater heat dissipation: [0003] The instrument box electric heater generates heat through its core element, the electric heating tube. That is, the power supply (usually 220V AC) energizes the electric heating tube to generate Joule heat. After passing through the wall of the electric heating tube, the heat continues to be transmitted to the inside of the instrument box by heat conduction and radiation through the metal cooling fins, so as to prevent freezing and heat preservation of the instrument tube in the...

AI Technical Summary

Problems solved by technology

[0004] The heat dissipation structure of the original instrument box heater is as follows: figure 1 and figure 2 Shown: The heat dissipation method of the electric heating tube of the instrument box electric heater with fast heat conduction is to add metal heat dissipation fins to the electric heat pipe. Because of different power and size requirements of different electric heat pipes, the size of the heat dissipation fins is not uniform, and the heat dissipation surface area is small. thermal effect is not obvious

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