-25/-45 ℃ Horizontal Low Temperature Freezer Company

Production Inspection of -25℃/-45℃ Horizontal Low Temperature Freezer

The production inspection process of -25℃/-45℃ horizontal low-temperature freezers is a vital step in ensuring that these units perform at their meet industry standards. Since these freezers are often used to store temperature-sensitive materials, even small defects can compromise their effectiveness, so thorough inspection and testing are necessary. Key steps in the production inspection process include:

Visual Inspection:

The step in the production inspection process involves a detailed visual examination of the freezer's exterior and internal components. The goal is to identify any visible defects, such as scratches, dents, or signs of wear on the casing, doors, and seals. The freezer should also be checked for correct assembly and to ensure that all parts are in place and functioning as intended. Proper door sealing is especially important in horizontal freezers, as it minimizes the loss of cold air and enhances energy efficiency.

Temperature Control Testing:

One of the critical aspects of a -25℃/-45℃ horizontal low-temperature freezer is its ability to maintain the desired temperature consistently. During production, each unit undergoes rigorous temperature testing to verify that it can reach and sustain the required low temperatures. This testing typically involves running the freezer in a controlled environment for several hours to ensure that it can maintain a stable temperature range, even during prolonged operation. Temperature probes and sensors are used to monitor temperature variations inside the unit, ensuring compliance with industry standards.

Compressor and Refrigeration System Check:

The refrigeration system, which includes the compressor, condenser, and evaporator, is another crucial part of the inspection process. The compressor is responsible for circulating the refrigerant through the system to maintain the low temperatures. During inspection, technicians evaluate the performance of the compressor, checking for efficiency, sound levels, and any signs of malfunction. Additionally, the refrigerant system is tested for leaks to ensure there is no loss of refrigerant, which could bring about poor cooling performance.

Compressor Types of Ultra Low Deep Chest Freezers

Ultra-low deep chest freezers, particularly those designed for temperatures as low as -45℃, -60℃, or even -86℃, are critical for applications where storing sensitive biological or pharmaceutical materials is necessary. The compressor is a central component of these freezers, responsible for circulating the refrigerant and maintaining the low temperatures. Understanding the different types of compressors used in ultra-low deep chest freezers is key to selecting the right unit for specific needs. The two primary types of compressors used in these units are reciprocating compressors and rotary compressors.

Reciprocating Compressors:

Reciprocating compressors are one of the commonly used types of compressors in ultra-low deep chest freezers. They are known for their reliability and ability to generate higher pressures, which is essential for achieving the low temperatures required in deep freezing applications. In this type of compressor, a piston moves back and forth within a cylinder to compress the refrigerant gas. As the piston moves, the refrigerant is drawn in, compressed, and then expelled into the condenser.

Advantages:

High pressure capability: Reciprocating compressors are well-suited for ultra-low temperatures because they can maintain the high pressure needed to circulate refrigerants effectively.

Durability: These compressors are robust and can withstand heavy use over long periods, making them ideal for commercial and industrial-grade freezers.

Efficiency at low temperatures: Reciprocating compressors are particularly efficient at maintaining the very low temperatures required in deep freezing applications.

Disadvantages:

Noise: One of the drawbacks of reciprocating compressors is that they tend to be noisier than other compressor types due to the mechanical movement of the piston.

Vibration: The piston's back-and-forth motion can cause vibrations, which may bring about additional wear and tear over time.

Rotary Compressors:

Rotary compressors, while less common than reciprocating compressors in ultra-low freezers, are increasingly being used in certain applications due to their quiet operation and energy efficiency. These compressors use a rotating mechanism to compress the refrigerant. The compressor contains a rotary element, such as a vane or roller, which moves around a central shaft to compress the gas.