What's the difference between a cargo shower and an air shower?

1. Functional use
Cargo shower
Main functions: The shower room is used for cleaning and purifying the goods. It is mainly to remove dust, debris, and other pollutants on the surface of the goods, and play a preliminary cleaning role before the goods enter the clean area. For example, in food processing enterprises, raw materials can be blown off the soil, dust and other impurities attached to the surface through the cargo shower before entering the production workshop; In electronic component manufacturing plants, raw materials and finished products can be reduced by electrostatic adsorption of particles through the cargo shower, preventing these impurities from entering the production area and affecting product quality.
Application scenario: It is widely used in all kinds of places with cargo transportation and certain requirements for cleanliness, such as logistics channels of pharmaceutical factories, electronics factories, food factories, etc., and the transition area between warehouses and clean workshops.
Air shower
Main functions: The air shower room is mainly for personnel cleaning. When the personnel enter the clean area, the high-speed clean air blowing can effectively remove the dust, hair, dander, and other pollutants on the surface of the human body, and also play a certain bactericidal role. In some places with high requirements for air quality and microbial control, such as hospital operating rooms, sterile laboratories, etc., air shower rooms are essential equipment.
Application scenario: Commonly used in hospitals, biopharmaceutical enterprises, electronic semiconductor manufacturing enterprises, precision instrument manufacturing enterprises, and other places in the personnel access to clean areas.
Second, structural design
Cargo shower
Internal space: The internal space of the general cargo shower room is large, and the height and width design is mainly to adapt to the passage of different sizes of goods, such as some cargo shower room heights can reach 3-5 meters, and the width is about 2-4 meters, to facilitate the smooth entry and exit of transport vehicles such as forklifts. Its internal structure is relatively simple, mainly the layout of the nozzle, the nozzle is generally distributed on the top and both sides of the cargo shower room, and can blow the goods in an all-round way.
Door design: The size of the door is also large to adapt to the entry and exit of goods. It can be a fast rolling shutter door, which can open and close fast, which is conducive to improving the efficiency of the passage of goods; It can also be a double door, the structure is relatively simple, and the cost is relatively low. The door of the cargo shower room usually takes into account the ease of access of equipment such as forklifts, and some will be equipped with anti-collision devices.
Air shower
Internal space: The air shower room is relatively small, mainly considering the standing space of personnel. The general height is about 2-2.5 meters, the width is about 1-1.5 meters, the length is determined according to the number of people accommodated at the same time, the length of the single air shower is generally 1-1.2 meters, and the length of the multiple air shower will increase accordingly. In addition to the sprinkler, the interior will also be set up with lighting devices, voice prompt devices, etc., to facilitate the use of personnel.
Door design: The door of the air shower room is generally made of toughened glass doors or stainless steel doors, which makes it easy to observe the internal situation. There are various ways to open the door, such as a manual sliding door and automatic induction door. Due to the frequent entry and exit of personnel, the tightness and durability of the door are also important, while taking into account the ease and safety of opening.
Three, the shower system
Cargo shower
Blowing strength: The blowing strength of the cargo shower room is relatively large because it is necessary to remove dust and other impurities on the surface of the goods. The blowing wind speed is generally about 18-25m /s, and the blowing time can be adjusted according to the nature of the goods and the degree of pollution, generally between 30-90 seconds.
Air filtration: The air filtration system is mainly to prevent impurities such as dust from the outside world from polluting the goods again through the shower system. The primary and medium effect filters are usually used, the primary effect filter can filter the larger particles of dust, and the medium effect filter can further filter the impurities of the smaller particles to ensure the cleanliness of the air.
Air shower
Blowing intensity: The blowing intensity of the air shower room is relatively weak, mainly considering the capacity of the human body. The blowing wind speed is generally about 18-22m /s, and the blowing time is usually fixed between 10-30 seconds, which can effectively remove pollutants such as dust on the surface of the human body in a short time, while not making personnel feel uncomfortable.
Air filtration: The air filtration system in the air shower is more demanding. In addition to the primary and medium effect filters, it will also be equipped with a high-efficiency filter (HEPA), which can filter out particles above 0.3 microns, with a filtration efficiency of more than 99.97% to ensure that the air blown into the air shower is highly clean, in line with the requirements of asepsis and dust-free.
4. Control system
Cargo shower
Control function: The control system of the cargo shower room is relatively simple, mainly to control the opening and closing of the door, the setting of the blowing time, the start and stop of the nozzle, etc. Some cargo showers can also be linked with the logistics conveying system, when the goods are transported to the shower door, it can automatically trigger the opening of the door and the shower procedure.
Operation mode: It can be operated by the button on the control panel, or the remote control device can be used to facilitate the operator to control the operation of the cargo shower room at a certain distance.
Air shower
Control function: The control system of the air shower room is more complex. In addition to the basic door control and shower control, there will be a voice prompt function, and voice guidance during the personnel entry and shower process, such as "please stand in the designated position", "shower start", "shower end, please leave" and so on. There will also be an intelligent sensing function, which can automatically detect whether the personnel enter the air shower room, and automatically adjust the blowing mode according to the number and location of the personnel.
Mode of operation: inductive operation is usually adopted. When the personnel is near the door of the air shower room, the door automatically opens, and the blowing procedure automatically begins after entering. At the same time, an emergency stop button is also set inside to deal with emergencies.