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Method for on-site detecting and metering fume discharge total amount and fume concentration on-site detecting and metering instrument

A technology for on-site detection and oil fume concentration, which is applied in the direction of measuring device, specific gravity measurement, relative volume flow measurement, etc., can solve the problems of impossible fast detection on the spot of cooking, and achieve the effect of small size

Inactive Publication Date: 2005-03-02
何宗彦
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AI Technical Summary

Problems solved by technology

The accuracy of this method will not be very high, and it is impossible to use it for rapid detection on the cooking scene

Method used

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  • Method for on-site detecting and metering fume discharge total amount and fume concentration on-site detecting and metering instrument

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Embodiment Construction

[0045] The method for on-the-spot detection and metering total amount of oil fume discharge of the present invention is described as follows:

[0046] a. Use a certain negative pressure generated by the exhaust fan to extract the oily fume air to be tested.

[0047] b. Use a carbon dioxide detector to detect the concentration of carbon dioxide in the extracted airflow.

[0048] c. Turn on the heat source set in the specific reaction chamber to keep the temperature of the reaction chamber not lower than 150°C and not higher than 850°C.

[0049] d. Use the same negative pressure generated by the exhaust fan to extract the oily fume air to be tested.

[0050] e. Let the extracted air flow containing oil fumes enter the reaction chamber through the inlet of the reaction chamber at a certain speed.

[0051] f. Let the residence time of the air flow in the reaction chamber be no less than 0.05 seconds, so that the contained oil fume is fully oxidized.

[0052] g. Detect the carbo...

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Abstract

A method of onsite detecting and metering total amount of lampblack discharged and lampblack density onsite detecting and metering instrument are disclosed. Collect a part from air current, lampblack contained in which is completely oxided to be carbon dioxide and water; and before hand quantitative relation of density of lampblack and density of carbon dioxide created in oxidation reaction is built up; then detected density change of carbon dioxide before and after oxidation reaction is converted into density value of lampblack; density value of lampblack collected in each time quantum are accumulated and total amount of lampblack discharged is calculated according to sectional area and air current velocity of air outlet. Lampblack density onsite detecting and metering instrument is consisted of probe unit and discharge capacity, its main parts consist of detecting tube, data processing controller, automatic control switch, carbon dioxide tester, heating element, temperature tester, air current flow velocity and lampblack collection blower fan. The invention can test and calculate total amount of lampblack discharged, benefiting for environmental protecting sector to charge according to discharge capacity.

Description

(1) Technical field [0001] The invention relates to a method and equipment for detecting and measuring the total amount of oil fume discharge on site. (2) Background technology [0002] Most human activities are carried out indoors. Pollution in the indoor environment can lead to various diseases. Cooking fumes and irritating odor gases are one of the main sources of indoor environmental pollution. When the cooking temperature is higher than 130°C, oil fume will start to be produced from the edible oil, which will cause damage to people's respiratory and circulatory systems. Especially when the temperature reaches 230-280°C, some carcinogens may be produced in the oil fume. According to the analysis of Taiwan's Department of Health, the proportion of Taiwanese housewives suffering from lung cancer remains high. The main reason is that they have been in an environment polluted by cooking fumes for a long time. A survey in Nanjing found that 51.6% of lung squamous cell car...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01F9/00G01N9/36
Inventor 何宗彦
Owner 何宗彦
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