Compared with other types, what are the advantages of the liquid tank HEPA box?

As a key component of the high-efficiency air purification system, the liquid tank supply air outlet has significant advantages over traditional supply air outlets (such as ordinary high-efficiency supply air outlets, diffuser plate supply air outlets, etc.) in terms of sealing performance, filtration efficiency, and airflow organization, as follows:
1. It has better sealing performance and eliminates the risk of leakage
Liquid tank sealing technology: It adopts the sealing method of "inserting the knife edge into the liquid tank jelly glue". The rubber grooves around the filter frame are nested with the knife edge of the box body to form an airtight structure. The sealing reliability is much higher than that of traditional gasket sealing or mechanical compression sealing.
Traditional air supply outlets: They rely on rubber gaskets or bolts for compression. After long-term use, the gaskets tend to age and deform, leading to seal failure. Air may leak from the installation gap, affecting the cleanliness.
Liquid tank air supply outlet: Jelly glue (such as silicone glue) has good elasticity and durability. After the knife edge is inserted, it forms a continuous sealing surface, which can pass the DOP dust emission integrity test at one time, and the leakage rate is close to zero. It is especially suitable for high cleanliness scenarios of class 100 and above (such as semiconductor workshops, and operating rooms).
Structural leak-proof design: The filter pressure member can rotate freely to ensure that the knife edge is closely attached to the rubber groove, avoiding seal failure caused by installation errors or vibration.
Second, it has a higher filtration efficiency and a stronger cleanliness guarantee.
High-efficiency filter matching: Standard H13-H14 grade liquid tank high-efficiency filters are equipped, with a filtration efficiency of over 99.97% for 0.3μm particles, far exceeding the commonly used H10-H12 grade filters at ordinary supply air outlets.
Zero leakage filtration: The advantage of sealing performance ensures that the air must be completely filtered through the filter, avoiding "bypass leakage" of unfiltered air and guaranteeing that the cleanliness of the air sent out meets the standards.
Traditional case: When a certain biopharmaceutical workshop used ordinary supply air outlets, the microbial contamination exceeded the standard due to seal failure. After replacing the liquid tank supply air outlet, the cleanliness test result was stable at ISO 5 level (Class 100).
Third, the airflow organization is more uniform and the control of the clean area is more precise.
Smooth airflow design: The liquid tank technology reduces the airflow disturbance between the filter and the box body. Combined with the diffuser plate, the outgoing airflow can be more uniform, and the turbulence degree can be reduced by more than 30%.
Traditional supply air outlets: After passing through the filter, the airflow is prone to turbulence due to the sealing gap, resulting in uneven local airflow velocity in the clean area and affecting the control of pollutant diffusion.
Directional airflow control: When adjusting the air volume through the air valve, the airflow stability at the liquid tank supply air outlet is stronger, which can precisely control the supply air speed and flow pattern (such as unidirectional flow, non-unidirectional flow) of the clean room, meeting the different cleanliness requirements of ISO 4-8 grades (grades 10 to 100,000).
Fourth, it features outstanding maintenance convenience and reduces operation and maintenance costs.
Bottom filter replacement: When replacing the filter, there is no need to disassemble the box. The operation can be carried out directly under the ceiling, reducing damage to the cleanroom ceiling system and shortening the maintenance time by more than 50%.
Traditional supply air outlets: Replacing the filter requires the removal of the entire supply air outlet or ceiling components, which may cause secondary pollution, and the maintenance takes a relatively long time (for example, in a hospital's operating room, replacing the filter of a regular supply air outlet requires an 8-hour shutdown, while for a liquid tank supply air outlet, it only takes 2 hours).
Long-life sealing design: The aging resistance period of the jelly glue can reach over 10 years, which is much longer than the 3-5 year replacement cycle of traditional gaskets, reducing frequent maintenance costs.
Five. Better noise control and enhanced environmental comfort
Low turbulence noise: The smooth airflow design reduces the frictional noise when air passes through filters and diffusers. The operating noise is typically ≤55dB (A), making it suitable for noise-sensitive scenarios such as hospital wards and laboratories.
Traditional air supply outlets: Turbulent airflow is prone to generating high-frequency noise (up to 65dB or more), and long-term operation may affect the comfort of people indoors.
Six. It has a wider range of applicable scenarios, especially suitable for high-demand fields.
High-cleanliness essential scenarios: In scenarios such as semiconductor wafer manufacturing (where nanoscale particles need to be controlled), sterile workshops for biopharmaceuticals (where microbial contamination needs to be controlled), and organ transplantation operating rooms, liquid tank supply air outlets are the mainstream choice, while traditional supply air outlets are difficult to meet the strict GMP and ISO 14644-1 standards.
Complex environmental adaptability: The corrosion-resistant box body (electrostatic powder coating treatment) and anti-aging sealant enable it to operate stably in special environments such as humidity, acid, and alkali, such as chemical laboratories and lithium battery clean workshops.
Summary: Comparison of the core advantages of liquid tank air supply outlets
Compare the dimensions liquid tank air supply outlet with the traditional ordinary air supply outlet.
The sealing method is liquid tank + knife edge inserted with jelly glue, airtight grade sealing gasket pressed tightly, or mechanical seal, which is prone to aging and leakage.
Filtration efficiency: H13-H14 grade, leakage rate < 0.01%; H10-H12 grade, leakage rate ≥0.5%
The turbulence degree of the airflow uniformity is low, with the air supply uniformity within ±10%. The turbulence degree is high, and the local airflow fluctuation is large.
The convenience of maintenance: The filter can be replaced at the bottom without removing the ceiling. The box or ceiling needs to be disassembled, which is time-consuming and laborious for maintenance.
Applicable cleanliness grades: ISO 4-8 (Grade 10 to 100,000), ISO 6-8 (Grade 100 to 100,000)
Typical scenarios include semiconductors, biopharmaceuticals, operating rooms, general clean workshops, food factories, and electronics factories.
The liquid tank supply air outlet has solved the sealing and efficiency pain points of traditional supply air outlets through technological innovation, becoming a "standard configuration" in the high-cleanliness field. Although the initial cost is relatively high, in the long run, due to its low maintenance cost and high reliability, it has a better overall cost performance.