# US 2019/0168330 A1 · Electronic shielding gas flow regulator system applied in welding equipment

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- Number: US 2019/0168330 A1
- Document ID: US20190168330A1
- Status: Published application
- Kind: A1
- Application number: 16/183,215
- Filed: 2016-08-16
- Published: 2019-06-06
- Earliest claimed: 2016-08-16
- Applicants: Powermig AutomaçãO E Soldagem Ltda.
- Inventors: Juarez Fochesatto
- Web page: https://patentgrep.com/patent/US20190168330A1

## CPC

- B23K 9/0953: {using computing means}
- B23K 9/095: Monitoring or automatic control of welding parameters
- B23K 9/0956: {using sensing means, e.g. optical}
- B23K 9/10: Other electric circuits therefor; Protective circuits; Remote controls
- B23K 9/16: making use of shielding gas
- B23K 9/164: {making use of a moving fluid}
- B23K 9/173: and of a consumable electrode
- F17D 5/02: Preventing, monitoring, or locating loss
- G05D 7/06: characterised by the use of electric means {(G05D7/005 takes precedence)}
- G05D 7/0635: {by action on throttling means (G05D7/0688, G05D7/0694 take precedence)}
- B23K: SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- F17D: PIPE-LINE SYSTEMS; PIPE-LINES (pumps or compressors F04; fluid dynamics F15D; valves or the like F16K; pipes, laying pipes, supports, joints, branches, repairing, work on the entire line, accessories F16L; steam traps or the like F16T; fluid-pressure electric cables H01B9/06)
- G05D: SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES

## Abstract

An electronic shielding gas flow regulator system applied in welding equipment, object of the present utility model, is described, which aims to solve the drawbacks described in the prior art by means of a MIG/MAG/TIG welding gas saving system which verifies through a current sensor (Shunt) (30) the current being used, sending this data to a software processing system (microcontroller) (20) which subsequently performs the gas release through a linear actuation valve (23) according to the welding current being measured, and the confirmation of the outlet flow is performed by a flowmeter sensor in order to guarantee accurate flow.

## Claims

### Claim 1

An electronic shielding gas flow regulator system applied in welding equipment describes a welding gas saving system interconnected in the feed line between the gas and the welding equipment, having a base structure (10) provided with inlet (12) and outlet (13) connections of the gas, characterized in that a microcontroller board (20) provided with a specific software that performs the gas inlet and outlet readings, either online or offline, analyzing the amount of gas entering the equipment and comparing it with the values of current and flow; the inlet connection (12) directs the gas to the flowmeter sensor (22) and through a straight connection (21) it directs the gas to the microcontroller (20), identifying the amount of gas entering the equipment, demonstrating this information to the user through the numerical display (11) that presents the information both in online and offline mode; the output connection (13) is controlled by a linear actuating valve (23) which promotes the release of the gas according to the information emitted by the microcontroller (20), said microcontroller (20) performing a flow calculation through the parameters received by the flowmeter sensor (22) and straight connection (21) compared to the current calculation issued to the microcontroller (20) via the external current sensor (30) interconnected to the microcontroller (20) near the contact port (14); the software interconnected to the microcontroller (20) compares the reading values of the current sensor (30) with the values of the flow table, sending the information to the linear valve (23), stating the gas amount that must be released to the system; the linear actuation valve (23) allows to compensate the gas flow in real time according to the current variations of the welding machine or pressure change; in offline mode the equipment is switched off and it is not possible to use the regulation and management ranges of the gas flow system, but it informs through the numerical display (11) the gas amount being directed to the welding equipment, that is to say, that even with the equipment off, the microcontroller (20) performs the identification of the inlet gas through the flowmeter sensor (22) and straight connection (21).

### Claim 2 (depends on 1)

An electronic shielding gas flow regulator system applied in welding equipment, according to claim 1, characterized in that the microcontroller board (20) describes a relay (24) of error information and equipment locking when there is a fault or gas failure, leakage or low pressure, causing the equipment to stop immediately.

### Claim 3 (depends on 1)

An electronic shielding gas flow regulator system applied in welding equipment, according to claim 1, characterized in that the current sensor (30) is arranged adjacent to the current output of the welding equipment, allowing the microcontroller (20) to receive the current information of the welding equipment and perform the necessary calculations (flow×current) to determine the gas amount to be released for the welding process.

### Claim 4 (depends on 1)

An electronic shielding gas flow regulator system applied in welding equipment, according to claim 1, characterized in that the microcontroller (20) controls the current or pressure range so as to adjust the valve opening drive to cause the opening of the valve (23) remains stable by increasing or reducing the actuation of the linear opening and closing of the drive, and the correction of the gas amount to be released is performed online, that is, the current determines the gas amount that will be released based on the data acquired, as well as the pressure range.

### Claim 5 (depends on 1)

An electronic shielding gas flow regulator system applied in welding equipment, according to claim 1, characterized in that the comparative calculations performed by the system are predetermined at the time of the logical description the software operation with the microcontroller (20).

### Claim 6 (depends on 1)

An electronic shielding gas flow regulator system applied in welding equipment, according to claim 1, characterized in that the equipment through the power port (15) is connected together with the power grid, operating at a voltage of 110 V or 220 V.

### Claim 7 (depends on 1)

An electronic shielding gas flow regulator system applied in welding equipment, according to claim 1, characterized in that the microcontroller (20) performs the gas amount reading entering the equipment, either in online or offline mode.