发明名称 |
Method for estimating carboxylic acid gas concentration and soldering apparatus |
摘要 |
To provide a method for estimating a concentration of carboxylic acid gas, which is capable of measuring safely the concentration of carboxylic acid gas such as formic acid gas or the like in a chamber of a soldering apparatus in real time, and a soldering apparatus capable of estimating the concentration of the carboxylic acid gas in the chamber. The method includes the steps of measuring a surface temperature of a same object placed in the chamber at a same point in time by using a thermometer (first thermometer) for measuring a temperature without any influence of infrared absorption by carboxylic acid, and a radiation thermometer (second thermometer) for measuring a temperature by infrared in a wavelength region that the carboxylic acid absorbs, and estimating the concentration of the carboxylic acid gas in the chamber on the basis of a temperature difference (ΔTx) between temperatures indicated by the first and second thermometers. The soldering apparatus includes a heating stage (30), a gas introducing part (25) for introducing a mixed gas of an inert gas and a carboxylic acid gas, a gas discharging part (26), first thermometer (37) and second thermometer (38). |
申请公布号 |
US9513211(B1) |
申请公布日期 |
2016.12.06 |
申请号 |
US201515112400 |
申请日期 |
2015.01.06 |
申请人 |
ORIGIN ELECTRIC COMPANY, LIMITED |
发明人 |
Kobayashi Hideo;Ozawa Naoto;Matsuda Jun |
分类号 |
G01N21/3504;G01N33/00 |
主分类号 |
G01N21/3504 |
代理机构 |
Squire Patton Boggs (US) LLP |
代理人 |
Squire Patton Boggs (US) LLP |
主权项 |
1. A method for estimating a concentration of a carboxylic acid gas in a chamber, the carboxylic acid gas introduced into the chamber being for reaction, the method comprising the steps of:
measuring a surface temperature of a same object placed in the chamber at a same point in time by using a thermometer (first thermometer) for measuring a temperature without any influence of infrared absorption by carboxylic acid, and a radiation thermometer (second thermometer) for measuring a temperature by infrared in a wavelength region that the carboxylic acid absorbs; and estimating the concentration of the carboxylic acid gas in the chamber on the basis of a temperature difference (ΔTx) between temperatures indicated by the first thermometer and the second thermometer. |
地址 |
Saitama JP |