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Carbon dioxide gas meter heating circuit and carbon dioxide gas meter

A carbon dioxide and heating circuit technology, applied in metal processing equipment, non-electric variable control, flow control of electric devices, etc., can solve problems such as fuse burnout and need to be replaced

Pending Publication Date: 2021-04-06
SHENZHEN JASIC TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In view of this, the embodiment of the present invention provides a carbon dioxide gas meter heating circuit to solve the problem that the fuse of the carbon dioxide gas meter burns out and needs to be replaced

Method used

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  • Carbon dioxide gas meter heating circuit and carbon dioxide gas meter
  • Carbon dioxide gas meter heating circuit and carbon dioxide gas meter
  • Carbon dioxide gas meter heating circuit and carbon dioxide gas meter

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Embodiment Construction

[0032] In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are the embodiment of the present invention. Some examples, but not all examples. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0033] The terms "comprising" and any variations thereof in the description and claims of the present invention and the above drawings are intended to cover non-exclusive inclusion. For example, a process, method or system, product or device comprising a series of steps or units is not limited to the listed steps or units, but optionally also inc...

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Abstract

The invention is applicable to the technical field of carbon dioxide gas meters and provides a carbon dioxide gas meter heating circuit. The circuit comprises a power supply circuit, a heater, a driving circuit, a switching circuit, a current detection circuit and an overcurrent self-locking protection circuit, wherein a power supply output end of the heater is connected with an output end of the power supply circuit; a controlled end of the switch circuit is connected with the control signal output end of the drive circuit, and an input end of the switch circuit is connected with the output end of the heater; an input end of the current detection circuit is connected with an output end of the switching circuit, an output end of the current detection circuit is connected with an input negative electrode of the power supply, the input end of the overcurrent self-locking protection circuit is connected with the detection signal output end of the current detection circuit, and a first output end of the overcurrent self-locking protection circuit is connected with a feedback input end of the driving circuit. According to the circuit, a technical problem that the fuse is burnt out and needs to be replaced is solved.

Description

technical field [0001] The invention belongs to the technical field of carbon dioxide gas meters, and in particular relates to a carbon dioxide gas meter heating circuit and a carbon dioxide gas meter. Background technique [0002] Carbon dioxide is a commonly used gas for welding machines, and the flow of carbon dioxide gas is usually controlled by a gas meter. When the gas meter freezes, the frozen gas meter will easily affect the gas flow, resulting in improper protection of the molten pool during welding and unsightly weld formation. At this time, the gas meter is generally equipped with a heating circuit to heat the carbon dioxide, so that the gas flow is uniform, but the existing heating circuit protection measures are generally fuse protection through the fuse, but the protection measures of this heating circuit are unreliable, and the fuse is blown. If the fuse is burnt out, it needs to be replaced, and it is difficult for users to find a fuse of the same specificati...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05D7/06B23K37/00H02H3/08
CPCB23K37/00G05D7/0617H02H3/08
Inventor 巴忠诚黄始全
Owner SHENZHEN JASIC TECH
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