Fresh Kitchen Environment from the Source - Principle and Application of Odour Reduction Chambers

Author : Zhang

Update time : 2024-02-29 10:46:12

In today's society where quality of life is becoming increasingly important, kitchen odour management has become an integral part of people's daily lives, and the Odour Reduction Chamber is one of the key tools to address this issue. The Odour Reduction Chamber is a device designed to test and evaluate the effectiveness of household appliances, such as cooker hoods, in removing cooking odours from the kitchen. This chamber simulates the home kitchen environment to thoroughly test and analyse the conditions and challenges that cooker hoods are likely to encounter in real-world use.

Odour reduction testing is essentially a series of standardised test procedures to assess the ability of a cooker hood to remove odours from cooking. This ability is not only related to the physical absorption and filtration efficiency of the device, but also the ability to break down and neutralise chemical components. In this process, a source of odour of a specific composition and concentration is generated in the test chamber, and changes in the odour molecules in the air are monitored through the operation of the cooker hood to derive a specific value for odour reduction.

The principle of the test is mainly based on the physical adsorption and chemical reaction of odour molecules. The filtration system in the cooker hood, such as activated carbon filters, photocatalysts and other materials, can effectively capture and decompose harmful substances and odour molecules in the grease and smoke. By simulating the cooking process in a controlled environment, it is possible to accurately measure the change in the concentration of odour molecules in the air after treatment with a cooker hood over a specific period of time, and thus assess its efficiency in reducing odour.

The test process usually consists of a preparation phase, a testing phase and an analysis of the results.
Prior to the test, a brand new filter of the recirculating appliance is dried in an oven at 50 °C (5 °F) for 16 hours.
At the start of the test, the dried filter is taken out of the oven and immediately loaded into the cooking fume extraction unit to be tested in a laboratory that meets the test conditions. After running at the highest speed for 30 min at room temperature, the temperature of the bottom of the pan was adjusted according to the standard, and the dripping was finished, and the solution was stirred by a fan placed in the middle of the floor for 10 min, so that the evaporated gases were evenly dispersed into the laboratory and sampled according to the standard, and the measured odour concentration was the maximum odour concentration of the laboratory during the 30 min of the operation of the cooking fume extraction device. The measured odour concentration is the maximum laboratory odour concentration when the cooking fume extraction device is in operation for 30 min.
After measuring the maximum odour concentration in the laboratory during 30 minutes of operation of the appliance, it is important not to switch off the appliance until the odour concentration in the laboratory has dropped from 15 % to 15 %, and to record the time taken for this process, which is the odour elimination time of the recirculating cooking fume extraction device.

This odour reduction laboratory is designed and manufactured in accordance with DIN 44971:1992 and is suitable for testing the odour reduction performance of cooker hoods.
Technical Parameters
1.Working power supply: AC220V 50Hz
2.air source: compressed air 0.4-0.6MPa (the user to provide)
3.est station: single station
4.Working medium: butanone C4H80
5.test models and specifications: top outlet hood, size not more than 1200 mm x 600 mm x 1100 mm.
6.Temperature at the bottom of the evaporating dish: controlled from room temperature to 200°C, measuring accuracy: ±2°C. The temperature is constant at 170°±10°C in standard condition during the test.

7. drip system: the use of peristaltic pump continuous extrusion work, for timing, fixed star to the electric stove heated to 170 ° C + 10 ° C pan drip. The position of the pan according to standard settings, the distance between the drip head and the bottom of the pan is 225mm ± 25mm. the odour medium is 300g ± 1g of room temperature distilled water and 12g ± 0.1g of butanone (analytically pure) mixture. All the mixture needs to be in 30min ± 15s within a uniform drip finished, measurement of the end of the latest 1min pan in the mixture should be completely evaporated.
8. drip needle: replaceable medical needle.
9. control parameters: automatic test state of the workflow in line with standard requirements
10. furnace power range: 200- 2500W (adjustable)
11. sampling no-load flow> 5L/min. Negative pressure: better than -75KPa.
12. time control: 0 ~ 99 minutes 99 seconds (can be set)
13. the configuration of uniform indoor airflow fan, flow rate of 250m3 / h ± 50m3 / h.
14. the sealing requirements of the laboratory: after 1h, set the concentration of odour, the decline value should not be greater than 5%.
15. test pan, diameter (200mm + 20mm), height 125mm, bottom thickness of at least 8mm.

Understanding the significance of the odour reduction test is not only vital for manufacturers when designing and improving their products, but also for consumers as an important indicator of product performance. An efficient cooker hood can significantly improve a home's living environment, reduce unpleasant odours during cooking and enhance quality of life. Therefore, the data and results obtained from such tests can help consumers make more informed purchasing decisions.

In conclusion, odour reduction chambers are not only a technological innovation, but also a bridge of trust between manufacturers and consumers. Through the use of such chambers, manufacturers can demonstrate to consumers the high performance and reliability of their products, while consumers can make more informed purchasing decisions through the test results. As technology continues to advance and market demand grows, odour reduction chambers will continue to play an important role in improving the quality of life at home.

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