CN102009248B - Air-cooled portable inverter welding machine load rate control method and device - Google Patents
Air-cooled portable inverter welding machine load rate control method and device Download PDFInfo
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- CN102009248B CN102009248B CN 201010506197 CN201010506197A CN102009248B CN 102009248 B CN102009248 B CN 102009248B CN 201010506197 CN201010506197 CN 201010506197 CN 201010506197 A CN201010506197 A CN 201010506197A CN 102009248 B CN102009248 B CN 102009248B
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- portable inverter
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Abstract
The invention discloses an air-cooled portable inverter welding machine load rate control method and an air-cooled portable inverter welding machine load rate control device. The method can accumulate the load rate of a timing circuit for controlling the welding machine according to the magnitude of a working current so as to ensure that the internal temperature of a semiconductor device is in a normal range. The device comprises a temperature sensor for monitoring the temperature of an air-cooled portable inverter welding machine so as to prevent the service life of the welding machine from being shortened by overheating.
Description
Technical field
The present invention relates to a kind of air-cooled portable inverter welding machine, especially a kind of air-cooled portable inverter welding machine load rate control method and device.
Background technology
Along with the appearance of the development of semiconductor technology, particularly IGBT, the contravariant welding machine had obtained very fast development in recent years, and to compare advantage especially outstanding with traditional transformer formula welding machine for it: volume is little, lightweight, consumptive material is economized, efficient is high.But because portable inverter welding machine adopts fan coolling at present, so its load factor is influenced by ambient temperature very large.Welding machine such as a 160A-20% load factor; it all can work standard-required in 40 ℃ of scopes of environment temperature-10 ∽, and under 40 ℃ of environment, 160A-20% load factor thermal protector should be failure to actuate; but satisfy the welding machine of this requirement; when environment temperature was lower than 10 ℃, the load factor of its 160A can reach 100%, so just may produce because environment temperature is low; make welding machine load rate too high; thereby make the semiconductor devices junction temperature too high, accelerate device aging, thereby shorten the service life of welding machine.
Summary of the invention
The present invention seeks to: provide a kind of can be according to operating current size, the load factor of accumulative total timing circuit control welding machine, thereby guarantee the semiconductor device inside temperature in normal range (NR), prevent that device is overheated and the air-cooled portable inverter welding machine load rate control method and the device that shorten the service life of welding machine.
Technical scheme of the present invention is: a kind of air-cooled portable inverter welding machine load rate control method, it is characterized in that, and may further comprise the steps:
(1) set electric current a, setting-up time b, setting-up time c sets d cool time;
(2) electric current I in the described air-cooled portable inverter welding machine is taken a sample, when I 〉=a, the first timer timing, the second timer resets, automatic clear;
(3) when I＜a, the first timer is fixed tentatively timing, and the second timer begins timing;
(4) between the second timer clocks during more than or equal to the time b that sets, the first timer resets, automatic clear;
(5) between the first timer clocks during greater than setting-up time c, welding machine shows the heat protection, and control output, enters cooling time-delay state; Until the second timer reaches d cool time of setting, welding machine recovers normal welding holding state.
Further; described step also comprises: design temperature e; with temperature f; and described air-cooled portable inverter welding machine operating temperature t sampled; when t 〉=e, welding machine preferentially enters hot guard mode, simultaneously the second timer timing; until time when reaching d, and temperature t＜f welding machine recovers holding state.
A kind of air-cooled portable inverter welding machine load rate control device is characterized in that, comprising:
Power module with 230V alternating current transformation, rectification, filtering, voltage stabilizing, is powered to this device;
Current sampling module is taken a sample to the electric current of described air-cooled portable inverter welding machine;
Temperature sensor is sampled to the temperature of described air-cooled portable inverter welding machine;
The clock pulses module, pulse shaping, shaping are also done timing and are used;
Data processing module can design temperature, the time, and can method according to claim 2 be processed by the data that collect.
Further, described data processing module can be microprocessor or the circuit that can realize described function.
Further, described air-cooled portable inverter welding machine load rate control device also comprises display module, and described display module links to each other with data processing module, can be with Current Temperatures, and the time shows in real time.
Further, described air-cooled portable inverter welding machine load rate control device also comprises key-press module, and described key-press module links to each other with data processing module, can pass through described button design temperature, the numerical value of time.
Advantage of the present invention is: can be according to operating current size, and the load factor of accumulative total timing circuit control welding machine, thus guarantee the semiconductor device inside temperature in normal range (NR), prevent that device is overheated and shorten service life of welding machine.
Description of drawings
The invention will be further described below in conjunction with drawings and Examples:
Fig. 1 is structural representation and the workflow diagram of air-cooled portable inverter welding machine load rate control method of the present invention and device.
The specific embodiment
Air-cooled portable inverter welding machine load rate control device as shown in Figure 1 comprises: power module: will exchange 230V through transformation, rectification, filtering, voltage stabilizing, and power to this device.The clock pulses module: pulse shaping, shaping, for timer 1., 2. as elapsed time clock.Current sampling and data processing module: set to set first electric current a, setting-up time b, setting-up time c sets d cool time, and sampled signal compares with setting value a through comparator, and when electric current 〉=a, timer is timing 1.; When electric current＜a, as long as continuous time＜b,, 1. timer will add up time of timing electric current 〉=a, but when electric current＜a the continuous time=during b, timer is automatic clear 1..When 1. timer added up timing and reach C, 2. timer began timing, and before timing reached d, welding machine was in hot guard mode always, until when reaching d, welding machine recovers holding state; This module and clock pulses module can realize that this microprocessor can be single-chip microcomputer by a microprocessor; Also can realize above-mentioned functions by circuit.Temperature sensor, through temperature controller, when temperature reach 〉=during e, welding machine preferentially enters hot guard mode, simultaneously 2. timing of timer, until time when reaching d, and temperature＜f welding machine recovers holding state, e and f can set in advance.
This air-cooled portable inverter welding machine load rate control device also comprises display module, can be to current temperature, and the data of time and setting are carried out real-time demonstration; Key-press module can be inputted temperature and the time numerical value of setting.
Above embodiment only is the present invention's a kind of embodiment wherein, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to claim of the present invention.Should be pointed out that for the person of ordinary skill of the art without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be with claims.
Claims (2)
1. an air-cooled portable inverter welding machine load rate control method is characterized in that, may further comprise the steps:
(1) set electric current a, setting-up time b, setting-up time c sets d cool time;
(2) electric current I in the described air-cooled portable inverter welding machine is taken a sample, when I 〉=a, the first timer timing, the second timer resets, automatic clear;
(3) when I＜a, the first timer is fixed tentatively timing, and the second timer begins timing;
(4) between the second timer clocks during more than or equal to the time b that sets, the first timer resets, automatic clear;
(5) between the first timer clocks during greater than setting-up time c, welding machine shows the heat protection, and control output, enters cooling time-delay state; Until the second timer reaches d cool time of setting, welding machine recovers normal welding holding state.
2. air-cooled portable inverter welding machine load rate control method according to claim 1; it is characterized in that; described step also comprises: design temperature e; with temperature f, and described air-cooled portable inverter welding machine operating temperature t sampled, when t 〉=e; welding machine preferentially enters hot guard mode; simultaneously the second timer timing, until time when reaching d, and temperature t＜f welding machine recovers holding state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010506197 CN102009248B (en) | 2010-10-14 | 2010-10-14 | Air-cooled portable inverter welding machine load rate control method and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010506197 CN102009248B (en) | 2010-10-14 | 2010-10-14 | Air-cooled portable inverter welding machine load rate control method and device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102009248A CN102009248A (en) | 2011-04-13 |
| CN102009248B true CN102009248B (en) | 2013-10-30 |
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| CN 201010506197 Expired - Fee Related CN102009248B (en) | 2010-10-14 | 2010-10-14 | Air-cooled portable inverter welding machine load rate control method and device |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2189999Y (en) * | 1994-05-19 | 1995-02-22 | 北京工业大学科技开发管理部 | Plasma-arc and argon arc welding controller with FET d.c.-a.c. converter |
| CN2621868Y (en) * | 2003-06-26 | 2004-06-30 | 上海金通电子设备有限公司 | Arc welder for pipeline welding |
| JP2008271694A (en) * | 2007-04-19 | 2008-11-06 | Rohm Co Ltd | Motor drive circuit, drive method, cooling device using the same and electronic computer |
| CN101306486A (en) * | 2008-07-08 | 2008-11-19 | 上海沪工电焊机制造有限公司 | Contravariant arc welding machine control device and control method thereof |
| CN101442242A (en) * | 2008-12-23 | 2009-05-27 | 南京航空航天大学 | Self-wind cooled rotor double-stator magneto resistance genus motor |
| CN201436128U (en) * | 2009-03-23 | 2010-04-07 | 深圳市佳士科技发展有限公司 | Digital inverter GMAW-P |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2482476Y (en) * | 2001-08-03 | 2002-03-20 | 台州耐力调速电机有限公司 | Contravariant welder with protector |
-
2010
- 2010-10-14 CN CN 201010506197 patent/CN102009248B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2189999Y (en) * | 1994-05-19 | 1995-02-22 | 北京工业大学科技开发管理部 | Plasma-arc and argon arc welding controller with FET d.c.-a.c. converter |
| CN2621868Y (en) * | 2003-06-26 | 2004-06-30 | 上海金通电子设备有限公司 | Arc welder for pipeline welding |
| JP2008271694A (en) * | 2007-04-19 | 2008-11-06 | Rohm Co Ltd | Motor drive circuit, drive method, cooling device using the same and electronic computer |
| CN101306486A (en) * | 2008-07-08 | 2008-11-19 | 上海沪工电焊机制造有限公司 | Contravariant arc welding machine control device and control method thereof |
| CN101442242A (en) * | 2008-12-23 | 2009-05-27 | 南京航空航天大学 | Self-wind cooled rotor double-stator magneto resistance genus motor |
| CN201436128U (en) * | 2009-03-23 | 2010-04-07 | 深圳市佳士科技发展有限公司 | Digital inverter GMAW-P |
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| CN102009248A (en) | 2011-04-13 |
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