Electrochemical carbon monoxide sensor

Abstract

The invention discloses an electrochemical carbon monoxide sensor comprising an anode reaction bucket in which hydroxide liquid is stored, a gas collecting cover which can be connected with an external detecting gas and a film electrode module used for catalyzing the carbon monoxide gas, wherein a cathode press piece is mounted on the inner face of the gas collecting cover in a sticking way; a sealing ring is mounted on the outer circumferences of the cathode press piece and the gas collecting cover; an anode press piece is embedded in an upper opening of the anode reaction bucket; and a flowcollecting film locating piece is lined between the anode press piece and the sealing ring; because the whole structure is designed in a shape of a battery, the electrochemical carbon monoxide sensordisclosed by the invention has the advantages of smaller volume and convenience for carrying; on the basis that the anode reaction bucket is a body, the structure of the electrochemical carbon monoxide sensor is integrally designed to obtain a compact structure; a water vapor chemical reaction principle is sufficiently utilized to catalyze the carbon monoxide gas into voltage; the content of the carbon monoxide gas is detected by using a current principle; the inlet external detecting gas is filtered by using a filtering body to obtain a purifying effect; the high efficiency of the detecting operation can be assured; the detecting gas is not limited to the carbon monoxide gas and a wide application range is obtained.

Description

technical field [0001] The invention relates to the technical field of sensors, in particular to an electrochemical carbon monoxide sensor. Background technique [0002] Harmful gases such as carbon monoxide are generally colorless and odorless, and are mostly hidden in hidden places, which are difficult to find; when someone enters, it is very easy to cause danger, and even cause casualties; there are currently many types of detection instruments for harmful gases. There are larger specifications placed in the laboratory, and some are easy to carry; such as the Chinese invention patent "Carbon Monoxide Sensor" (notification number CN201225994Y) with the patent number CN200820050372.5; including filters, upper electrode sheets, sensor chips, lower Electrode sheet, liquid chamber, shell, upper electrode pin and lower electrode pin, the upper and lower end surfaces of the sensor chip are in contact with the upper electrode sheet and the lower electrode sheet respectively, the ...

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Problems solved by technology

[0002] Harmful gases such as carbon monoxide are generally colorless and odorless, and are mostly hidden in hidden places, which are difficult to find; when someone enters, it is very easy to cause danger, and even cause casualties; there are currently many types of detection instruments for harmful gases. There are larger specifications placed in the laboratory, and some are easy to carry; such as the Chinese invention patent "Carbon Monoxide Sensor" (notification number CN201225994Y) with the patent number CN200820050372.5; including filters, upper electrode sheets, sensor chips, lower Electrode sheet, liquid chamber, shell, upper electrode pin and lower electrode pin, the upper and lower end surfaces of the sensor chip are in contact with the upper electrode sheet and the lower electrode sheet respectively, the upper electrode sheet is provided with air holes, the filter, the upper electrode sheet, the sensor The chip and the lower electrode sheet are arranged inside the casing from top to bottom, the liquid chamber is set at the bottom of the casing, and the top of the casing is provided with an air inlet, one end of the upper electrode pin is connected to the upper electrode sheet, and the other end passes through the bottom of the casing. Bottom, one end of the lower electrode pin is connected to the lower electrode sheet, and the other end passes through the bottom of the shell

This design is not equipped with a filter body at the air intake hole, that is, the detected gas cannot be purified, and in actual use, it cannot provide harmful gases with high purity, that is, it will damage the operating efficiency of the entire appliance; Equipped with an ion collection membrane, that is, the ion collection speed formed by the voltage is relatively slow, and the charges at the two poles are relatively unstable

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