Air Shower for the Beverage and Liquid Food Industry: Purchase Guide
创建于04.24
Determine the Cleanliness Class Requirements
- Filling Workshop: According to the review rules for the production license of beverage products, the overall air cleanliness of the filling workshop should reach Class 1000 (ISO 7), or the local air cleanliness of the filling area should reach Class 100 (ISO 5). For example, the aseptic cold filling line needs to reach ISO 5.
- Raw Material Processing and Packaging Area: Generally, it is Class 100,000 (ISO 8), which is suitable for the pre-processing of raw materials or the packaging area.
Consider the Material of the Air Shower Room
- Shell Material: Stainless steel material, such as 304 stainless steel, is preferably selected. It has good corrosion resistance and durability, can adapt to the relatively humid environment of the beverage and liquid food industry, and is easy to clean, avoiding the pollution of the production environment due to rust.
- Inner Wall Material: The surface of the inner wall should be smooth. For example, the inner wall made of stainless steel plates should be welded seamlessly without sanitary dead corners, which is convenient for cleaning and disinfection and can effectively prevent the accumulation of dust and bacteria.
Pay Attention to the Performance of the Air Shower System
- Air Velocity: The air outlet velocity of the nozzles in the air shower should reach above 25m/s, and the air velocity blowing on people should not be lower than 18m/s. In this way, it can effectively remove pollutants such as dust and bacteria on the surface of people and objects.
- Shower Mode: An air shower with multi-angle adjustable nozzles can be selected to achieve 360-degree all-round showering, ensuring that all parts of people and objects can be effectively cleaned. For places with a high frequency of personnel access, it is recommended to choose an air shower with double-sided showering or multi-sided showering to improve the showering effect and efficiency.
- Shower Time: The shower time should be adjustable within 10-99 seconds. The initial factory setting is generally about 10 seconds, which can be adjusted according to the actual situation. For example, when there is a lot of dust in the workshop environment, the shower time can be appropriately extended.
Select the Appropriate Door and Control System
- Door: The door should have good sealing performance to effectively prevent unpurified air from entering the clean area. A stainless steel semi-glass door can be selected, equipped with an automatic door closer and an electronic interlock device to ensure that the two doors cannot be opened at the same time, avoiding air flow short circuits. At the same time, the induction opening mode of the door is preferred, which is convenient for personnel access, reduces human contact, and lowers the risk of pollution.
- Control System: A control system with simple operation, sensitive response, and low failure rate is the first choice. The digital control panel can realize functions such as air adjustment, working time setting, and filter replacement reminder. Some high-end air shower rooms are also equipped with an intelligent voice prompt system to guide personnel to complete the showering process correctly.
Consider the Filtration System
- Filter Level: High-efficiency filtration is usually required in the beverage and liquid food industry. An air shower requipped with a panel-less high-efficiency filter can be selected, and the filtration efficiency is generally above 99.99%. It can effectively filter tiny particles in the air, such as dust and microorganisms, to ensure that the air entering the clean area reaches the corresponding cleanliness class.
- Filtration System Combination: A three-stage filtration system of primary, medium, and high efficiency is more ideal. The primary filter can filter larger particles of dust, protect the medium and high-efficiency filters, and extend their service life. The medium-efficiency filter further filters medium-sized particulate pollutants in the air. The high-efficiency filter is responsible for filtering tiny particles to ensure the cleanliness of the outlet air.
Pay Attention to Noise Control
The noise generated during the operation of the air shower should be as low as possible. Generally, products with noise below 60 decibels are recommended to provide a relatively quiet and comfortable working environment and reduce the impact on operators.
Focus on the Convenience of Cleaning and Maintenance
The pre-filter screen of the air shower should be easy to disassemble and clean. It can be cleaned by washing or vacuuming, and it is generally replaced every 3 months or so. The main filter screen should be detected 2-4 times a year, and the replacement should be determined according to the air velocity value or the pressure value measured by the differential pressure gauge. The internal structure should be reasonably designed without sanitary dead corners, which is convenient for the daily cleaning and disinfection of the staff.
Determine the Specification and Size of the Air Shower
Select the appropriate specification of the air shower according to the traffic flow of people and the space size of the workshop. If there are fewer people in the workshop, such as about 20 people, a single-person air shower can be selected. If there are more people, such as about 50 people, a double-person or multi-person air shower can be selected. For large beverage factories with a high frequency of personnel access, a corridor-type air shower passage may be more suitable, which can effectively improve the passage efficiency and save time
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