High and low temperature aging test chamber

The high and low temperature aging test chamber is designed specifically for long-term reliability testing, with a focus on the continuous operational stability, energy efficiency, and maintenance convenience of the equipment. When selecting, special attention should be paid to long-term operating indicators, load adaptability, and safety protection systems to ensure compliance with the stringent requirements of product aging testing. The equipment needs to have comprehensive remote monitoring and warning functions to support unmanned long-term testing tasks.

1、 Core system configuration

1. Structural system

Studio material: SUS304 stainless steel plate, thickness 1.5mm

Shell material: cold-rolled steel plate with double-layer epoxy resin spray coating, thickness 1.2mm

Insulation layer: high-density glass fiber cotton, density 120kg/m? Thickness 120mm

Sealing design: Silicone rubber double-layer sealing strip, temperature resistance range -80 ℃~+200 ℃

Observation window: Three layer tempered glass, middle layer vacuum coated and heated

Test hole: diameter 100mm, with insulation sealing kit

Cable interface: Waterproof gland head, supports multiple lead wires

2. Refrigeration system

Refrigeration method: mechanical compression refrigeration

Circulating system:

Single stage compression cycle (-20 ℃~+150 ℃)

Cascade compression cycle (-40 ℃~-70 ℃)

Compressor: Semi enclosed piston compressor, 2-4 units in parallel

Condenser: finned heat exchanger, copper tube with aluminum fins

Evaporator: Stainless steel brazed plate heat exchanger

Throttle device: electronic expansion valve+solenoid valve group

Refrigerant: R404A/R23 (environmentally friendly)

3. Heating system

Heating element: Nickel chromium alloy heating wire, ceramic insulation

Installation method: Stainless steel armor protection

Control mode: SSR solid-state relay, phase angle control

Power configuration: Multiple independent controls, total power of 12-30kW

4. Air circulation system

Fan type: backward centrifugal fan

Motor configuration: EC variable frequency motor, power 0.75-3kW

Blade design: Aluminum alloy wing blades

Wind speed range: adjustable from 0.3-2.0m/s

5. Control system

Main controller: Industrial PLC+10.4-inch touch screen

Temperature sensor: PT100 platinum resistor, Class A accuracy

Control Algorithm: Adaptive PID+Feedforward Control

Program Function:

Number of programs: 200 sets

Program steps: 1000 segments per group

Loop nesting: supports 8-layer loops

Data recording:

Storage capacity: 32GB

Sampling interval: 0.1s-1h can be set

Data formats: CSV, TXT, Excel

Communication interface: Ethernet RS-485、USB3.0

2、 Main technical parameters

1. Temperature parameters

Temperature range: -70 ℃ to+180 ℃

Temperature fluctuation: ± 0.3 ℃

Temperature uniformity: ± 1.5 ℃

Heating rate: 3.0 ℃/min (+25 ℃ →+150 ℃)

Cooling rate: 2.0 ℃/min (+25 ℃ → -70 ℃)

Temperature deviation: ± 0.5 ℃

2. Structural parameters

Internal volume: 1000 × 1000 × 1000mm (1000L)

Outer box size: 1800 × 1650 × 2150mm

Power specification: AC380V ± 10% 50Hz three-phase five wire

Maximum power: 45kW

Weight: Approximately 650kg

3. Aging test characteristics

Continuous running time: ≥ 2000 hours

Load capacity: maximum 300kg

Thermal load: ≤ 1.5kW

Power fluctuation adaptation: ± 15% voltage fluctuation

3、 Performance indicators

1. Temperature control performance

Long term stability: 1000 hours of continuous operation, temperature fluctuation ≤ ± 0.5 ℃

Space uniformity: 27 point test in workspace, temperature difference ≤ 1.5 ℃

Load adaptability: Under full load conditions, the temperature uniformity changes by ≤± 0.3 ℃

Recovery feature: After opening the door for 30 seconds, the set temperature will be restored within 5 minutes

2. Reliability indicators

Average time: ≥ 10000 hours

Average repair time: ≤ 2 hours

Equipment availability: ≥ 99.5%

Design lifespan: ≥ 15 years

3. Security protection system

Electrical protection:

Leakage protector (30mA)

Short circuit protector

Overvoltage and undervoltage protection

phase sequence protection

Equipment protection:

Compressor high pressure protection (25bar)

Compressor low pressure protection (0.5bar)

Compressor overheat protection (120 ℃)

Fan overload protection

Heater overheat protection

Sample protection:

Triple independent over temperature protection

Temperature gradient protection

power failure protection

Program exception protection

4. Energy consumption indicators

Standby power: ≤ 0.5kW

Average operating power: ≤ 18kW

Peak power: ≤ 45kW

Energy efficiency ratio: ≥ 2.8

4、 Manufacturing and Inspection Standards

1. Design standards

GB/T 10592-2008 Technical Conditions for High and Low Temperature Test Chambers

IEC 60068-2-1 Environmental testing Part 2-1: Test A: Low temperature

IEC 60068-2-2 Environmental testing Part 2-2: Test B: High temperature

UL 61010-1 Safety Requirements for Electrical Equipment for Measurement, Control, and Laboratory Use

2. Inspection and Calibration

Temperature calibration: According to JJF 1101-2019

Safety inspection: According to GB 4793.1-2007

EMC testing: According to GB/T 18268.1-2010

Continuous operation test: ≥ 240 hours

5、 Environmental requirements for use

Environmental temperature:+5 ℃~+35 ℃

Environmental humidity: ≤ 80% RH

Installation altitude: ≤ 2000 meters

Ventilation requirements:

Equipment rear side ≥ 1000mm

Both sides of the equipment are ≥ 600mm

Ground bearing capacity: ≥ 1000kg/m?

Power quality: THD ≤ 5%