High and Low Temperature Cyclic Damp Heat Explosion-Proof Test Chamber

I. Overview:

1.1 Product Overview

This series of products is mainly used to simulate the harsh high temperature, low temperature, and humid environments that electronic instruments, new materials, electrical equipment, vehicle parts, metals, electronic products, aerospace materials, etc., may encounter during transportation, storage, and use; or to test the resistance of materials, parts, or instruments to high temperature, cold, and damp heat, as well as potential damage and reduced lifespan under alternating high temperature, low temperature, and humid conditions.

1.2 Product Advantages and Technical Features

1.2.1 Utilizes multi-circuit, environmentally friendly, and energy-saving (low-noise) mechanical compression refrigeration systems.

All materials, parts, components, and raw materials used in this equipment, whether domestic or imported, are environmentally friendly products. Based on the characteristics of mechanical compression refrigeration, a dual-stage multi-circuit main and bypass system is adopted. Multiple main and bypass circuits can be adaptively selected according to different working conditions, with the entire control automatically managed by an intelligent control system. This replaces the traditional method of using temperature controllers to control heaters to offset refrigeration capacity for cooling control, thereby achieving energy-saving effects. Not only does energy consumption account for only 50% of similar products, but it also reduces the operating load of the refrigeration compressor, minimizes equipment vibration and noise, and improves control accuracy. To further enhance energy efficiency, throttling technology is employed to adapt the refrigeration output of the compressor to various temperature change rate requirements in the test chamber, while controlling power loss for energy savings. Noise reduction is achieved through sound absorption and silencing methods applied at various points in the overall structure and mechanical operation.

1.2.2 Temperature Balancing Method (Refrigeration System)

The refrigeration system of this equipment is designed with different capillary main and bypass circuits based on various system conditions. Through an intelligent control system, an automatically adjustable capillary throttling system ensures adjustable flow rates, achieving temperature changes with uniform temperature fields and minimal temperature fluctuations. The "static balance" technology of the "Intelligent High and Low Temperature Test Chamber Temperature Control System" is employed, which means "no heating during cooling" and "no cooling during heating." This differs from the traditional "dynamic balance" technology of high-power cooling versus high-power heating. The central controller adjusts the refrigerant flow to control cooling capacity based on the required cooling for the equipment itself and the user's test samples at different temperature control points, eliminating the need for heating to balance cooling (i.e., the "static balance" technology of "cooling without heating, heating without cooling"). This ensures excellent control accuracy and uniformity (improving technical performance by 20% to 45% compared to traditional dynamic balance technology) and keeps the equipment operating at relatively low power consumption, saving 20% to 45% more energy than traditional dynamic balance technology. The longer the low-temperature operation, the more significant the energy-saving advantage. This not only meets societal demands for energy conservation and environmental protection but also reduces user operating costs, enhances economic benefits, and extends the equipment's service life.

1.2.3 Applies a broadband pressure balance temperature adjustment system, achieving rapid temperature control through a fast-converging PID adaptive algorithm.

A forced air duct system, incorporating a temperature mixing chamber, static pressure chamber, and centrifugal fan blades, ensures full exchange of cold and heat and uniform distribution through the top air adjustment plate to every space in the working chamber (test area), achieving temperature uniformity. To achieve rapid temperature convergence, our company has developed a proprietary PID adaptive algorithm tailored for our equipment. This control method continuously adjusts based on temperature conditions during the process, achieving fast convergence, minimal temperature overshoot, and high stability.

1.2.4 Enables remote visual control.

The equipment is equipped with a human-machine interface and a touch-based automated control system for automatic operation. It also connects to remote computers via communication interfaces such as RS485 or Ethernet for remote monitoring. The entire system features a graphical interface for simple and quick control and management, automatic fault alerts, graphical fault indications with energy-saving suggestions, and troubleshooting guidance to help users resolve issues rapidly.