High And Low Temperature Environmental Test Chamber

1. Brief introduction

The high and low temperature environmental test chamber is a kind of high temperature to low temperature large range environmental test equipment specially designed and manufactured after the company's many years of actual production experience and combined with customer opinions. environmental testing.

2. Standard

JJF1101-2003 (Temperature and Humidity Calibration Specification for Environmental Test Equipment)

3. System composition

The electric furnace system consists of: environmental box, temperature measurement and control display system, heating system, refrigeration system, temperature measurement components, air supply circulation system, two-stage refrigeration unit, etc.

4. Structural principle and characteristics

4.1

The chamber body adopts a large front door structure and has an observation window. The observation window is inlaid with a heating plate, which can prevent the observation window from frosting and affect the observation

(Note: The size of the observation window can be designed according to to customer needs) The interior of the box body is made of high-quality stainless steel Material, the outside of the box is sprayed with iron plate plastic. The inner cavity and outer wall are insulated with ceramic fiber material, which has a good thermal The thickness of the thermal insulation layer is initially designed to be >80MM.

4.2

The internal mechanism of the box is specially designed, and the internal design adopts the design method of the front cavity and the rear cavity. The front cavity is mainly used for the heating of the front cavity, and has an independent high temperature resistant long- axis motor circulation system (no water cooling jacket structure), which can meet the Uniformity of temperature in high temperature environment. The rear cavity is designed as a closed box structure, and the refrigeration system is mainly installed, with an independent air circulation system.

4.3

In the low temperature test, in order to ensure that the cold air can be fully circulated, the air duct is designed as two upper and lower air ducts, the upper air duct is the air outlet, and the lower air duct is the air suction port. , cycle in turn to reach the required test temperature.

4.4

In the high temperature experiment, in order to prevent the high temperature air from entering the low temperature chamber and causing damage to the evaporator, a manual baffle valve is installed in the middle of the upper and lower air ducts, which can effectively prevent the entry of hot air, and can be manually opened during the low temperature experiment.

4.5

In order to avoid external influences on the temperature inside the test chamber and reduce the heat exchange between the temperature inside the box and the outside air environment, the box frame is also specially designed and fabricated to minimize cold bridges and ensure the temperature uniformity in the box.

4.6

High-quality sealing material and sealing structure are used between the door and the door frame, with good sealing and anti-aging properties

Technical Parameter

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