Air purification equipment quality appraisal

air purification equipment is based on the core principle of multi-stage filtration and aerodynamic synergy. By optimizing CADR value, CCM level and energy efficiency ratio, it can achieve efficient removal of particulate matter, gaseous pollutants and microorganisms. It is widely used in residential buildings, hospitals, industrial workshops and transportation hubs. In the medical environment, it is used to ensure sterile air in operating rooms; in the electronics manufacturing industry, it meets the ultra-clean needs of dust-free workshops; in home scenes, it solves the problems of allergens and decoration pollution. Compared with traditional equipment, new air purification equipment has the characteristics of intelligent sensing, composite purification technology and low-noise operation, and is the core equipment of healthy air management.

Zhongke Testing is a product quality appraisal service organization registered with the court. It can provide quality appraisal services for air purification equipment. It has a professional appraisal team and advanced instruments and equipment to provide fair and accurate appraisal results for air purification equipment quality appraisal.

As the demand for healthy consumption escalates, related quality dispute cases have increased significantly. The judicial dispute focuses on:

1, performance index dispute: false CADR value, excessive ozone emission;

2, material defects: insufficient fiber density of HEPA filter paper, defective activated carbon modification process;

3, process problems: unreasonable air duct design, insufficient UV lamp irradiation intensity;

4, contract performance dispute: core modules (such as solid-state sensor model, negative ion generator concentration) are inconsistent with the technical agreement.

air purification equipment quality identification technical methods mainly include:

1. Purification efficiency detection: through a certain concentration of target pollutants, measure the concentration difference of pollutants in the air before and after purification, and calculate the purification efficiency.

2. Odor and noise detection: Use the olfactory judgment method or instrument detection method to determine whether there is any odor, and use a sound level meter to measure the noise value.

3. Lifetime test: Continue to run the device under specified conditions and record its performance changes until it reaches the failure standard.

4. Structural and appearance inspection: Visually inspect whether the appearance, structure, connectors, etc. of the equipment comply with regulations and whether there are defects or damage.

A hospital of the applicant signed a "Medical Grade Air Purifier Procurement Contract" with a manufacturer of the respondent, agreeing that the bacterial removal rate is ≥99.9%. During use, it was detected that the floating bacteria in the operating room exceeded the standard. The manufacturer argued that it was caused by contamination caused by personnel operations.

identification analysis results:

The quality analysis expert group discussed and comprehensively analyzed the relevant information of "air purification equipment", contract technical agreements, on-site inspection case materials and other data, and made the following quality scores Analytical opinion:

The irradiation intensity of the UV-C lamp involved in the air purification equipment involved is only 45μW/cm² (agreement ≥100μW/cm²), the HEPA filter edge seal fails (leakage rate 15%); the activated carbon filling amount is less than 70% of the agreed value, and the formaldehyde purification efficiency is only 85%.

The appraisal conclusion concluded that defects in the equipment’s optical system and structure were the main causes of purification failure.

Air purification equipment quality appraisal report should include:

1, appraisal purpose and reference standards;

2, involved specifications, production batch number, construction record;

3, testing method Methods and equipment list;

4, correlation analysis of test data and failure;