product name

Rapid changes in temperature chamber

application

The temperature rapid change test chamber is suitable for testing various performance indicators of aerospace products, information electronic instruments, materials, electrical and electronic products, and various electronic components in high and low temperature or humid and hot environments.

Box Structure

The temperature rapid change test box body is processed and formed by CNC machine tools, with a beautiful and elegant appearance, and adopts a non reactive handle for easy operation.
The inner liner of the box is made of imported high-grade stainless steel (SUS304) mirror panel, and the outer liner of the box is made of A3 steel plate spray painted, which increases the appearance texture and cleanliness.
The water replenishment tank is located at the bottom right of the control box and has automatic water shortage protection, making it more convenient for operators to replenish water sources.
The large observation window is equipped with lighting to keep the inside of the box bright, and uses tempered glass embedded in the heating body to observe the condition inside the box clearly at any time.
Separating the humidification system pipeline from the control circuit board can prevent malfunctions caused by water leakage in the humidification pipeline and improve safety.
The waterway system pipeline circuit system adopts a door opening, which is convenient for maintenance and inspection.
A double-layer high-temperature resistant high tensile sealing strip is used between the door and the box to ensure the sealing of the testing area.
The lead hole (on the left side of the machine) can be used for external testing of power or signal lines (with a diameter of 25mm, 50mm, or 100mm). (The aperture or number of holes must be specified when placing the order).
The bottom of the machine adopts high-quality fixed PU movable wheels.

refrigeration system

Temperature rapid change test chamber refrigeration system and compressor: In order to ensure the cooling rate and minimum temperature requirements of the test chamber, this test chamber adopts a binary cascade air-cooled refrigeration system composed of a Taikang fully enclosed compressor. The cascade refrigeration system consists of a high-temperature refrigeration cycle and a low-temperature refrigeration cycle, with the connecting container being an evaporative condenser. The evaporative condenser also plays a role in energy transfer, transferring the thermal energy inside the working chamber through a two-stage refrigeration system to achieve the goal of high temperature. The design of the refrigeration system applies energy regulation technology, which is an effective way to ensure the normal operation of the refrigeration unit while effectively adjusting the energy consumption and cooling capacity of the refrigeration system, reducing the operating costs and failure rate of the refrigeration system to a more economical state.
Refrigerant: Adopting DUPONT R404 (high temperature cycle) and R23 (low temperature cycle)
Auxiliary components: expansion valve (Danfoss, Denmark), solenoid valve (CASTEL, Italy);
Filter (American Aigo); Refrigeration components such as oil separators (Taiwan Crown Pressure) are all imported.

refrigeration principle

The high and low refrigeration cycles of the temperature rapid change test chamber both adopt the inverse Carnot cycle, which consists of two isothermal processes and two adiabatic processes. The process is as follows: the refrigerant is adiabatically compressed to a higher pressure by the compressor, consuming work to increase the exhaust temperature. Then, the refrigerant exchanges heat with the surrounding medium through the condenser at an isothermal state, transferring heat to the surrounding medium. After the refrigerant undergoes adiabatic expansion through the valve, the temperature of the refrigerant decreases. Finally, the refrigerant absorbs heat from the object at a higher temperature through the evaporator, causing the temperature of the cooled object to decrease. This cycle repeats itself to achieve the goal of cooling down

Compliant with standards

This product meets the requirements of GB2423.22-2001 Test N "Temperature Change Test Method"; Meet the requirements of national standards and other relevant standards. Strictly follow GB 10592-89 "Technical Conditions for High and Low Temperature Test Chambers"

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