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Refrigerator undesirable odor detection method

A detection method and refrigerator technology, applied in the field of odor detection, can solve the problems of large subjective factors, poor reproducibility, inability to judge the specific influence of odor components, and achieve the effect of rapid and accurate separation and analysis

Inactive Publication Date: 2018-05-18
HAIER SMART HOME CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the method of human judgment often has large subjective factors and poor reproducibility; although the odor detection device can quantitatively detect the total odor, it cannot judge the composition of the odor and the specific content of each gas in the odor. influences

Method used

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  • Refrigerator undesirable odor detection method
  • Refrigerator undesirable odor detection method
  • Refrigerator undesirable odor detection method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0070] This embodiment collects and detects and analyzes the gas in the refrigerated and frozen storage compartment of the 1# refrigerator, including the following steps:

[0071] (1) Collect samples: One end of the Tenax TA sampling tube is connected to the sampling pump, and the other end is placed in the refrigerator, refrigerator or freezer to be tested.

[0072] Quickly close the refrigerator door, set the flow rate of the sampling pump to 50mL / min, and the sampling time to 30min.

[0073] (2) Desorption of sample gas: Place the Tenax TA tube of the collected gas in the thermal desorption instrument, and perform secondary thermal desorption according to the conditions set by the thermal desorption instrument. Desorption temperature of primary adsorption tube: 280°C, desorption time of primary desorption: 10min, flow rate of primary desorption is 40ml / min; high temperature of secondary desorption cold trap: 280°C, desorption time of constant temperature cold trap: 40min, s...

Embodiment 2

[0082] This embodiment collects and detects and analyzes the gas in the refrigerated and frozen storage room of 2# refrigerator, the implementation steps are the same as in Example 1, and the gas chromatogram of the corresponding detection results is as follows Image 6 with Figure 7 ; See Table 2 for the equivalent styrene content conversion results.

Embodiment 3

[0084] This embodiment collects and detects and analyzes the gas in the refrigerated and frozen storage rooms of the 3# refrigerator. The implementation steps are the same as in Example 1, and the gas chromatogram of the corresponding detection results is as follows Figure 8 with Figure 9 ; See Table 2 for the equivalent styrene content conversion results.

[0085] Table 2 Gas composition and equivalent styrene content in refrigerators of Examples 1 to 3

[0086]

[0087]

[0088] ND: not detected

[0089] From the analysis of the conversion results shown in Table 2, it can be seen that although the content of isopentane, pentane and cyclopentane in the refrigerator is relatively high in Example 1, due to the large smell threshold, the amount of styrene equivalent converted into However, the content is not high, so its overall impact on the odor in the storage room of the refrigerator is not great.

[0090] In Example 2, compared with Example 1, the content of isope...

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Abstract

The invention provides a refrigerator undesirable odor detection method which includes the steps: qualitatively and quantitatively analyzing gas samples in a refrigerator storage chamber to obtain gascomponents in the storage chamber and contents of the gas components; performing equivalent conversion according to the contents of gases and odor smell threshold values corresponding to the gases toobtain the content of styrene; calculating total equivalent styrene of the gas samples in the refrigerator storage chamber, and converting the total equivalent styrene into a total odor smell threshold value of the gas in the storage chamber. The refrigerator undesirable odor detection method can detect odor components in the refrigerator storage chamber, refrigerator undesirable odor gases can be qualitatively analyzed and can also be quantitatively analyzed, and various volatile organic compounds are rapidly and accurately separated and analyzed. Further, sources of the undesirable odor canbe searched out according to the smell threshold values corresponding to the refrigerator undesirable odor gases, conversion of equivalent styrene content can be performed according to the content ofthe odor and smell threshold value corresponding to the odor, and total content of the refrigerator undesirable odor is visually represented by the aid of single data.

Description

technical field [0001] The invention relates to odor detection, in particular to a refrigerator odor detection method. Background technique [0002] As a tool for storing food or other items at low temperature, refrigerators have become an indispensable part of people's lives. In real life, users will smell a peculiar smell when they open a new refrigerator. The main reason for these peculiar smells is that many rubber or plastic parts made of organic polymer materials are used in the refrigerator. After enrichment, it tends to give off an offensive odor. This odor not only affects consumer satisfaction, but also affects human health in severe cases. Therefore, establishing a refrigerator odor detection method to quantify and evaluate the odor composition and the degree of odor emission in the refrigerator is an effective method to control and reduce the odor generation. [0003] The olfactory threshold is obtained by people through sensory testing, and refers to the lowe...

Claims

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Application Information

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IPC IPC(8): G01N30/88G01N30/06G01N1/22
CPCG01N30/88G01N1/2226G01N30/06G01N2030/884
Inventor 张晶晶王丽燕马冰雪姜波
Owner HAIER SMART HOME CO LTD
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