Views: 426 Author: Site Editor Publish Time: 2026-01-09 Origin: Site
Split-type DX air conditioning units, with their multiple advantages, combine the high efficiency of direct evaporation heat exchange with the flexibility of split installation, making them the preferred equipment for indoor environmental control in homes and various commercial and industrial settings.
Introduction to Split-Type DX Air Conditioning Units
The refrigerant evaporates directly in the indoor unit, absorbing heat from the air for rapid cooling. Compared to non-direct expansion units, direct expansion units do not require an intermediate cooling medium; the refrigerant directly exchanges heat with the air, resulting in high efficiency, fast response, and low energy consumption.
Figure 1: Ruidong's Split-type DX Air Conditioning Unit
Main Components of the Ruidong Split-type DX Air Conditioning Units:
Outdoor unit: compressor, air-cooled condenser, axial fan, dryer filter, oil-water separator, expansion valve, reversing valve and control device, etc.
Indoor unit: Evaporator (cooling) / Condenser (heating), centrifugal fan, air filter and related control devices, etc.
l The basic functions of the indoor unit are divided into: mixing section, regulating section, filtering section, heating and humidifying section, fan section, and noise reduction section.
l Additional functions that can be added to the indoor unit include: dust removal, dehumidification, sterilization, and purification.
l Various installation options for indoor units: ducted air supply type, ceiling-mounted type, wall-mounted type, floor-standing type, etc.
Cooling and Heating Principle of Split-type DX Air Conditioning Units
Cooling principle:
1. The condensed refrigerant liquid flows through the indoor heat exchanger (evaporator), where it absorbs heat from the indoor air and expands into a gas.
2. The gas is pumped to the compressor, where it is compressed into a high-temperature, high-pressure gas and sent to the outdoor heat exchanger (condenser) to release the absorbed heat into the outdoor air, and the refrigerant is then condensed back into a liquid state.
3. The cooled liquid refrigerant is pumped back to the evaporator, completing one refrigeration cycle.
Heating principle:
By switching the refrigerant flow direction using a four-way valve, a reverse heating cycle can be achieved.
Core Technologies and Advantages of Ruidong Split-type DX Air Conditioning Units
Ruidong's split-type DX air conditioning unit relies on three core technologies to ensure efficient and stable system operation:
1. Direct expansion heat exchange technology: The refrigerant directly exchanges heat with the air, reducing energy loss and improving system efficiency.
2. Modular structure design: It consists only of indoor and outdoor structures, requiring no auxiliary equipment such as water pumps and cooling towers, making installation simple and eliminating the risk of water pipes freezing and cracking in winter.
3. Multifunctional integrated control: Supports integrated operation of air purification, dehumidification, humidification, temperature control, and fresh air adjustment to meet diverse environmental needs.
High-quality core components are a solid guarantee for the performance of the unit, and Ruidong Group's split-type DX air conditioning units have a great advantage in the selection and design of core components:
1. Heat exchanger: It adopts high-efficiency internally threaded copper tubes and aluminum fins with secondary stamping and flipping technology. The mechanical tube expansion process achieves a tight connection. The aluminum fins are treated with both hydrophilicity and anti-corrosion, which can effectively reduce the thickness of the condensate film, reduce thermal resistance, and greatly improve heat transfer efficiency, ensuring stable and efficient heat exchange.
2. Compressor: Equipped with an environmentally friendly, energy-saving, and economical scroll compressor, precisely matching different unit specifications, balancing operating efficiency and service life, and adapting to diverse application scenarios.
3. Blower: High-quality and efficient centrifugal blower is selected, with a special anti-vibration structure design, which combines efficient air delivery and stable low-noise operation.
4. Microcomputer controller: Supports optional touch screen and RS485 interface, enabling remote centralized control, and is easy and intuitive to operate.
5. Wide-temperature range renowned electrical components: adaptable to environments from -15℃ to 65℃, providing precise control.
6. Multiple protection devices ensure safe operation.
Leveraging high-quality core components, years of manufacturing experience, and a strong engineering team, we also offer the following services:
1. Supports T3 operating condition customization, adaptable to high-temperature environments.
2. Factory operation test: Ensure 100% product qualification.
3. Available in galvanized steel sheet with powder coating or stainless steel, offering both aesthetic appeal and corrosion resistance.
4. The outdoor unit's cooling capacity, as well as the indoor unit's functions and style, can all be customized.
5. For harsh environments such as high temperature, high humidity, and high corrosion, we can customize and provide corrosion-resistant materials.
Furthermore, based on the actual needs of the project, Ruidong Group can flexibly support customization and provide comprehensive, high-quality air conditioning solutions.
Application Scenarios of split-type DX air conditioning units
Figure 2-Application scenarios of split-type DX air Conditioning Unit
1. Commercial buildings, such as shopping malls, office buildings, and hotels, provide comfortable indoor environments.
2. Industrial sites: such as factories and workshops, to meet the temperature and humidity control requirements during the production process.
3. Medical facilities, such as hospitals and laboratories, provide a clean and stable air environment.
4. High-requirement environments: such as clean rooms in the electronics, food, and pharmaceutical industries, meeting high standards of air purification.
In the future, Ruidong Group will continue to deepen its functions and applications, and is committed to solving HVAC solutions.
