The infectious disease point-of-care (POC) analyzer is a miniaturized and portable medical device specially designed for the detection of infectious disease pathogens.

It features a simple and compact structure, easy operation, high-efficiency multi-channel parallel detection, and rapid result interpretation. As an indispensable core component of the POC analyzer, the reagent tank is mainly used to store and deliver various testing reagents, including enzyme-labeled reagents, antibodies, standard substances, and quality control substances. It can precisely control the storage, selection, mixing, dilution, and quantitative dispensing of reagents, which is critical for obtaining accurate and reliable test results from the POC analyzer.

The constant temperature device built into the analyzer’s reagent tank provides an optimal temperature environment for stored reagents, maximizing the maintenance of their activity and stability. Existing infectious disease POC analyzers generally adopt semiconductor refrigeration modules to cool the reagent tank.

Huajing Co., Ltd. has been focusing on the R&D, production, sales and customized services of semiconductor refrigeration modules for many years. The company boasts an R&D team composed of experts in thermal management research and semiconductor refrigeration technology, as well as high-standard laboratories, enabling it to deliver domestically leading performance test results for temperature control series products. Our customized temperature control equipment solutions and products have been widely applied in multiple industries and fields, including medical treatment, beauty care, automotive, communication, testing instruments and consumer electronics.

The working principle of the semiconductor refrigerated air water harvesting device is to cool ambient air and liquefy water vapor in the air into tiny droplets, so as to obtain fresh water. It draws water from ubiquitous humid air on Earth, featuring convenient water acquisition and direct fresh water treatment. Compared with other water intake equipment, this air water harvester requires no complex auxiliary devices. With a compact size and few moving parts, it is easy to carry and transport by personnel or vehicles, making air water harvesting an optimal solution for distributed water intake systems.

Different from large-scale seawater desalination projects, the water harvester based on air water extraction technology is highly applicable to field scientific expeditions, camp outposts and field troops, effectively meeting water demand in arid, semi-arid and island regions.

Structure and Working Principle of Semiconductor Refrigerated Air Water Harvesting Device

The system of the semiconductor refrigerated air water harvesting device consists of an air pump, temperature and humidity sensors, a condensation chamber, a water collector and a water circulation device. The water collector is equipped with lasers, water depth sensors and other components. The air pump at the device inlet delivers ambient air into the condensation chamber, which is connected to semiconductor cooling chips. The semiconductor cooling chips continuously provide cooling capacity to lower the internal temperature of the condensation chamber.

The air entering the condensation chamber comes into contact with the cold-end fins inside the chamber, generating heat and moisture exchange between the humid air and the cold fins. Since the temperature of the humid air is higher than that of the cold-end fins of the semiconductor cooling chips, heat is transferred from the humid air to the fins through convective heat transfer, gradually cooling the humid air.

When the air temperature drops to the dew point temperature corresponding to its relative humidity, the gaseous water vapor in the humid air gradually condenses into liquid water and adheres to the fin surfaces to form tiny droplets. As the droplets grow larger, their gravity exceeds the adhesion force of the fins, causing the droplets to fall down and be collected by the water tank arranged below the fins.

Adopting the Peltier effect of semiconductors to realize refrigeration and dew condensation for moisture extraction from humid air, the device features simple operation, low power consumption, resource conservation and zero pollution, providing an innovative method for fresh water acquisition in special environments.

Founded in 2015, Huajing Co., Ltd. is a technology and innovation enterprise integrating the R&D, production, sales and service of temperature control equipment. The company’s three core business segments cover semiconductor refrigeration technology, vapor compression refrigeration technology, and flexible thermal conductive electrothermal film application technology.

It provides integrated overall technical solutions including 3D structural design, CAE thermal simulation analysis, and supporting electronic hardware and software development. Its products are widely used in various industries such as consumer electronics, medical beauty, and industrial communication.

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