Introduction to the working principle of the refrigeration unit of the Water Cooling Mattress With Bed Cooling System

The Water Cooling Mattress With Bed Cooling System is an efficient temperature regulation device, which is particularly suitable for use in hot weather and can provide users with a cool and comfortable sleeping experience. Its core component, the refrigeration unit, plays a decisive role. The refrigeration unit removes heat from the surface of the mattress through water circulation technology, thereby helping to regulate the user's perceived temperature. This article will introduce in detail the working principle of the water-cooled mattress refrigeration unit and its key role in the water cooling system.

The refrigeration unit of the water-cooled mattress is the heart of the entire cooling system and is mainly composed of the following parts.
Compressor: This is the core component of the refrigeration unit, which is responsible for compressing the refrigerant, changing it from a low-pressure and low-temperature state to a high-pressure and high-temperature state, thereby starting the entire refrigeration cycle.
Condenser: The condenser is used to condense the high-temperature refrigerant compressed by the compressor into a liquid state and release heat to the external environment.
Evaporator: The evaporator is the part of the refrigeration unit responsible for absorbing heat, where the refrigerant evaporates and absorbs heat to cool the water down.
Expansion valve: The expansion valve is responsible for controlling the flow of refrigerant. It releases the refrigerant from a high-pressure and low-temperature state to a low-pressure and low-temperature state, and enters the evaporator to absorb heat.
Water pump and water circulation pipeline: The water pump pushes the cooling water to circulate between the mattress and the refrigeration unit, transporting the low-temperature water to the mattress and taking away the heat dissipated by the human body.

The working principle of the refrigeration unit is based on traditional refrigeration cycle technology, which is similar to the refrigeration process of household air conditioners and refrigerators. The whole process can be divided into the following steps.
Refrigerant compression: The compressor in the refrigeration unit first compresses the refrigerant from a gaseous state to a high-temperature and high-pressure gas. This process increases the temperature by increasing the pressure of the refrigerant. In this state, the refrigerant has a large amount of thermal energy and is ready to release heat.
Refrigerant condensation: The high-pressure and high-temperature gaseous refrigerant enters the condenser, where the refrigerant dissipates heat to the external environment through contact with air or water. At this time, the refrigerant changes from a gaseous state to a liquid state and maintains a high-pressure and low-temperature state. The heat of this condensation process is discharged to the external space by the fan to prevent the system from overheating.
Refrigerant expansion and pressure reduction: The liquid refrigerant then passes through the expansion valve and quickly reduces its pressure. This pressure reduction process changes the refrigerant from a high-pressure liquid to a low-pressure and low-temperature liquid, and quickly prepares to enter the evaporator for heat absorption.
Refrigerant evaporation and heat absorption: The low-pressure and low-temperature liquid refrigerant enters the evaporator and begins to evaporate. During this process, the refrigerant absorbs the surrounding heat, causing the temperature inside the evaporator to drop. At this time, the cooling water exchanges heat with the refrigerant through the heat exchanger of the evaporator, and the temperature of the water will drop rapidly and become low-temperature water.
Water circulation cooling: The water cooled by the evaporator is transported to the cooling pipe system in the mattress by a water pump. These pipes are distributed inside the mattress, and the heat emitted by the human body is absorbed and taken away through the circulation of water flow. The cooled water contacts the human body in the mattress, helping to regulate the body temperature and ensure that the surface of the mattress remains cool.
After absorbing the heat from the human body, the cooled water returns to the refrigeration unit through the water pump again, repeating the above refrigeration cycle. In this way, the mattress always remains cool, and the heat from the human body can be continuously absorbed, thereby achieving a cooling effect.

Refrigeration units are usually equipped with intelligent temperature control systems, which allow users to set precise temperatures according to their personal needs. Some high-end water-cooled mattress systems are also equipped with automatic temperature control functions, which can automatically adjust the cooling intensity according to the ambient temperature and the user's body sensation, thereby providing the best sleeping experience in different nighttime environments. The temperature control system monitors the water temperature in real time through sensors and controls the cooling efficiency of the refrigerant by adjusting the working state of the compressor. If the water temperature rises, the system will increase the operating speed of the compressor to improve the cooling effect; conversely, when the water temperature is low, the system will slow down the operating frequency of the compressor to save energy.