Linear compressor of the refrigerator

In today’s discussion, we will explore the functioning of refrigerators equipped with linear compressors. Our focus will be on understanding the working principle of a linear compressor in a refrigerator, its definition, and its various types.

This particular component plays a crucial role in the refrigeration system, as it significantly enhances the efficiency of both chambers. The linear design of this equipment allows for the creation of distinct pressure levels in different compartments within the refrigerator.

Description of the linear compressor of the refrigerator

When the refrigerator door is closed, we can hear a distinct sound that is produced by the appliance’s operation. When it begins functioning, the compressor generates a pressure difference within its compartments. As it operates, it cools the sections of the refrigerator by compressing and circulating refrigerant, effectively removing heat. In doing so, it transfers heat from the internal chambers to the external environment, thereby cooling them down.

The linear model of this equipment is a compact device that operates through an electrically driven internal piston. It is not bulky and occupies minimal space. The entire mechanism is cleverly concealed within its casing. The design incorporates specific openings for secure attachment to the appliance’s body.

For what is the linear compressor of the refrigerator intended

The linear type compressor, as mentioned earlier, generates a pressure difference inside the refrigerator. There are several groups of equipment based on the type:

• screw type;
• piston type;
• rotary;
• centrifugal;
• spiral type.

Each type of equipment has both advantages and disadvantages. However, their main purpose remains the same – to transfer heat from the internal compartments to the outside. It is important to note that the heat transfer process may vary depending on the compartment type. It is well known that the temperature inside the freezer compartment is different from that in the storage compartment, therefore, the heat transfer process is more intense in the former.

Let’s now delve into the operation of the linear model in more detail, focusing on its different types. Here’s a breakdown:

1. The screw-type compressor utilizes a screw component to circulate refrigerant throughout the system. This design generates high pressure within the system during operation.
2. For this type, electricity is supplied to a specific rotor that is connected to the piston via a special connecting rod. The piston creates pressure within the system through its translational movements, resulting in more effective cooling.
3. The rotary type incorporates a unique rotor that is powered by an electric motor. as soon as the rotor initiates its rotation, the eccentric gradually moves towards the inside of the cylinder. at this point, it compresses the refrigerant gas effectively and then expels it through the discharge valve.
4. The centrifugal type of equipment utilizes a system that works based on the compression of the gas medium by utilizing a rotor that is equipped with a shaft. this rotor contains specialized wheels that are symmetrically arranged relative to each other. as these wheels, along with their blades, start to rotate, the gas is set in motion from the center towards the outer edge of the wheels. as a result, the gas gets compressed, acquiring inertia, and proceeds with its movement throughout the system. this process plays a crucial role in the functioning of the refrigerator and ensuring the maintenance of the optimal temperature.
5. When using spiral-type equipment, the compression of the refrigerant occurs in the space between two spirals. One of the spirals remains stationary while the other rotates around it. It is important to highlight that the rotation follows a non-traditional path, where the engine driving the rotating spiral moves along the walls of the stationary spiral, sliding on a film of oil. The point of contact shifts from the spiral edge to the center, which facilitates the suction of the substance. In the center of the equipment, high gas pressure is achieved, and then the gas is transported throughout the system via the discharge line.

The principles of operation vary depending on the type, but all types of linear compressors share a common goal: to regulate the pressure in the refrigerator chambers and maintain the desired temperature.

Aside from the linear compressor, there is also the inverter type, which is equally well-liked. In the following section, we will delve into their distinctions.

Compared to linear models, the inverter model has a different approach to loading the refrigerator systems. It operates steadily and smoothly without the need to constantly switch on and off to maintain the desired temperature mode. This not only reduces the load on the power grid but also minimizes the risk of short circuits. When the equipment is turned on, the inverter model quickly reaches the desired temperature and maintains it throughout its operation.

Unlike traditional models, the inverter model practically never turns off completely. Instead, it simply reduces its power output. This allows for gradual and smooth power fluctuations that do not heavily impact the system. As a result, significant temperature fluctuations in the compartments are avoided. The advantages of the inverter model are as follows:

• Because there is no need to operate at maximum power, the noise level of the refrigerator decreases.
• The lifespan of an inverter refrigerator is significantly longer since it doesn’t have periodic on/off cycles.

However, despite these advantages, why haven’t inverter refrigerators replaced models with linear compressors completely? It’s not that simple, as these models also have their weaknesses:

• Inverter models are more susceptible to voltage fluctuations.
• The cost of these models is noticeably higher compared to refrigerators with linear compressors.

Advantages of refrigerators with linear compressor

The fridge that is equipped with a linear system is more efficient, as its electromagnetic circuitry helps to minimize electricity loss while the equipment is in use.

Significantly, this device uses circuitry based on "direct current" to enhance its energy-saving capabilities. It features a noise-reducing start system to minimize unpleasant sound disturbances. When it comes to environmental performance, this specific model outpaces the inverter model in several aspects. Above all, it is remarkably more affordable compared to its competing counterpart, providing a compelling reason to choose it.