Constant temperature and humidity machine precision air conditioner

Constant Temperature and Humidity Integrated Unit
The Huashi Dadi constant temperature and humidity integrated unit is manufactured with precision processes to ensure the stability and durability of the equipment, enhancing the user experience. It features intelligent control with a built-in intelligent control system, enabling automated operation, reducing labor costs, and improving work efficiency. It is stable and reliable, and has passed strict quality inspections to ensure the stable and reliable operation of the equipment and reduce the failure rate.

The operation of the constant temperature and humidity unit system is achieved through three interconnected systems: the refrigerant circulation system, the air circulation system, and the electrical automatic control system;
Refrigerant circulation system:
The liquid refrigerant in the evaporator absorbs heat from the air (the air is cooled and dehumidified) and begins to evaporate. Eventually, a certain temperature difference is formed between the refrigerant and the air, and the liquid refrigerant completely evaporates into a gas. It is then sucked in and compressed by the compressor (pressure and temperature increase). The gaseous refrigerant absorbs heat through the condenser (air-cooled/water-cooled) and condenses into a liquid. After being throttled by the expansion valve (or capillary tube), it becomes a low-temperature and low-pressure refrigerant and enters the evaporator, completing the refrigerant circulation process.
Air circulation system:
The fan is responsible for drawing in air from the return air outlet. The air passes through the evaporator (cooling and dehumidification), humidifier, and heater (heating up), and is then sent to the space required by the user through the supply air outlet. The supplied air mixes with the air in the space and returns to the return air outlet.
Electrical automatic control system:
It includes a power supply part and an automatic control part.
The power supply part supplies power to the compressor, fan, humidifier, etc. through contactors.
The automatic control part is divided into temperature and humidity control and fault protection parts:
Temperature and humidity control compares the temperature and humidity of the return air with the temperature and humidity set by the user through the temperature and humidity controller, and automatically operates components such as the compressor (cooling and dehumidification), humidifier, and electric heater (heating up) to achieve automatic control of constant temperature and humidity.
Fault protection control is achieved through the combination of pressure protection, timer, relay, overload protection, etc., to control fault protection for components such as the compressor, fan, and humidifier.
Unit Features:
1. Advanced control:
The unit is controlled by an intelligent instrument or a programmable logic controller (PLC), with high control accuracy and good reliability. The unit's instrument can reserve a remote control interface, facilitating users' remote centralized control and saving management labor. Modern control technology is fully applied, and the control model is optimized to ensure that the unit's operation mode adapts to changes in operating conditions throughout the year, improving the unit's seasonal energy efficiency ratio;
2. Multiple protections:
The unit is equipped with protections such as high pressure, low pressure, overload, short circuit, phase loss, overheating, and low air pressure, as well as interlocking protections for water pumps and fire dampers;
3. The unit fully uses scroll compressors (below 50Hp) with high energy efficiency ratio (EER) and semi-hermetic screw compressors (above 60Hp).
4. With the seasonal energy efficiency ratio (SEER) as the optimization goal, the system matching theory is fully introduced, and computer-aided design technology is widely used to optimize the design (selection) of the structural parameters of each component of the refrigeration system, so that the performance matching between each component in the system is reasonable, enabling it to form a complete whole and ensuring its efficient and reliable operation under various operating conditions throughout the year.
5. Modern control technology is fully applied, and the control model is optimized to ensure that the unit's operation mode adapts to changes in operating conditions throughout the year, improving the unit's seasonal energy efficiency ratio.
6. Multi-functional, with a wide temperature control range (5~32℃), and high operation efficiency throughout the year. A fresh air ventilator interface is reserved, and users can configure a fresh air ventilator. During the transition season and winter, the unit can automatically introduce low-temperature outdoor air into the room to achieve the purpose of ventilation and cooling, while also reducing the operation time of the main unit to achieve energy saving. This feature is especially suitable for occasions that require ventilation during the transition season and cooling in winter.
7. The unit uses environmentally friendly working fluids, selects environmentally friendly materials, and adopts new technologies and processes that meet environmental protection requirements, so that the unit meets environmental protection requirements in the whole process and all aspects.
8. The unit can be equipped with an automatically controlled sterilization device to ensure the cleanliness of the air in the air-conditioned room.
Structural Features:
1. Compressor:
High-performance imported compressors are selected, which are safe, reliable, and have a high energy efficiency ratio.
2. Fan:
High-performance, low-noise centrifugal fans are used, with advantages such as large air volume, high static pressure, low noise, and stable operation.
3. Heat exchanger:
Introduced from the American OAK production line for processing, which greatly improves the heat exchange efficiency of the heat exchanger.
4. Outer casing:
Indoor unit: Processed using Japanese AMADA equipment, with excellent appearance quality. The frame below 30Hp adopts a popular new aluminum alloy frame structure with rounded edges; above 40Hp, it adopts a new diamond-shaped aluminum alloy frame structure. The overall structure is compact, beautiful, and elegant, and full of modern flavor.
Outdoor unit: The heat exchanger adopts a one-time bending forming technology, with a beautiful appearance and good heat exchange effect. The outer casing is made of high-quality steel plate with surface spraying or stainless steel material, so the unit will never rust when placed outdoors.
5. Humidifier:
High-performance humidifiers are selected, with characteristics such as good control performance, high humidification efficiency, safety, and reliability.
6. Heater:
Ribbed high-efficiency electric heating tubes are used, with small volume and high heat conversion rate.
7. Refrigeration accessories:
Expansion valves, filters, solenoid valves, high and low pressure controllers, pressure gauges, and other accessories are all brand products.
8. Defrosting mechanism:
High-reliability components and high-performance control methods are used to ensure the safety and reliability of defrosting when the unit operates at low temperatures, as well as complete and thorough frost layer treatment, thereby improving the unit's heat exchange performance.
9. Insulation layer:
High-performance insulation materials are used, with low thermal conductivity, high water resistance, anti-aging, flame retardancy, and non-toxicity.