Manufacturer of high and low temperature test chambers

The purpose of the Hangzhou/Guangdong high and low temperature test chamber manufacturer is:

It is a testing equipment used in the metal, plastic, rubber, electronics and other material industries to test the structure or composite materials. It can withstand the degree of chemical change or physical damage caused by thermal expansion and contraction of the sample in a continuous environment at high and low temperatures in a short period of time.

1、 Core technology system

1. Structural design and manufacturing

Box structure:

Inner box material: SUS304 stainless steel plate is commonly used, which has high temperature resistance and corrosion resistance characteristics.

Outer box material: usually high-quality cold-rolled steel plate, surface treated with phosphating and electrostatic spraying, or directly using SUS304 stainless steel plate.

Insulation layer: filled with high-density glass fiber cotton or hard polyurethane foam material, with a thickness usually above 100mm, to ensure good insulation performance.

Sealing technology: A double-layer silicone rubber sealing strip that is resistant to high and low temperatures is used between the door and the box, and a door buckle clamping device is equipped to ensure sealing.

Observation window: equipped with multi-layer insulated glass observation window and built-in electric defrosting device to prevent condensation or frosting on the glass surface under low temperature conditions.

Test lead holes: Lead holes with sealed covers are reserved on the side or rear of the box for external power or signal line access.

2. Refrigeration system

Working mode: Mechanical compression refrigeration.

Refrigeration cycle:

Single stage compression refrigeration: suitable for temperature range of -20 ℃ to+150 ℃.

Cascade compression refrigeration: used to achieve a low temperature range of -40 ℃ to -80 ℃. It is completed by coupling independent high-temperature and low-temperature refrigeration cycles through an evaporative condenser.

Core component configuration:

Compressor: Choose semi closed or fully closed compressors from international brands such as Taikang and Gulun. For medium and large equipment, multi compressor parallel technology is adopted to improve refrigeration efficiency and reliability.

Condenser: air-cooled (suitable for small and medium-sized equipment and water limited environments) or water-cooled (suitable for large equipment and high heat load environments).

Evaporator: Adopting a finned heat exchanger, it is highly efficient and energy-saving.

Throttle device: capillary tube or external balanced thermal expansion valve.

3. Heating system

Heating element: Nickel chromium alloy electric heating wire is used, grouped and arranged in the air circulation duct.

Control method: PID regulation is achieved through high-power solid-state relays to achieve precise power control and smooth heating process.

4. Air circulation system

Composition: It consists of a long shaft motor, a multi wing centrifugal fan, and an aerodynamic designed air duct.

Function: Force the air inside the drive box to circulate in a closed loop between the evaporator, heater, and working chamber to ensure temperature uniformity.

5. Control system

Controller: Adopting a dedicated programmable temperature controller or a combination of industrial touch screen and PLC.

Control Algorithm: Adopting PID control algorithm and equipped with self-tuning function, it can automatically optimize control parameters.

Programming function: Supports multi-stage programming and can set complex temperature profiles, including heating, cooling, constant temperature residence, and cyclic operation.

Data recording: Equipped with real-time data recording function as standard, it supports exporting historical data and curves through USB interface.

Communication interface: Typically equipped with RS-232, RS-485, or Ethernet interfaces for remote monitoring and control.

6. Sensors

Temperature sensor: using Pt100 platinum resistance, accuracy.

2、 Main technical parameters

1. Temperature parameters

Temperature range: Depending on the model and configuration, the common range is -20 ℃~+150 ℃, -40 ℃~+150 ℃, -70 ℃~+150 ℃.

Temperature fluctuation: ≤± 0.5 ℃ (in a stable state).

Temperature uniformity: ≤ 2.0 ℃ (in a stable state).

Heating and cooling rate: usually 1 ℃~3 ℃/min (referring to the average rate throughout the entire process, non-linear).

2. Structural parameters

Internal volume: From standard models (such as 80L, 150L) to walk-in large volumes, customized according to customer needs.

Internal dimensions: width (W) x depth (D) x height (H).

3、 Performance and reliability guarantee

1. Temperature performance guarantee

Uniformity and fluctuation: guaranteed through precise air duct design, matched fan pressure/air volume, and stable control system.

Long term stability: depends on the quality of core components (such as compressors, controllers) and strict welding and assembly processes for refrigeration pipelines.

2. Security protection system

Electrical safety: overload protection, leakage protection, short circuit protection, grounding protection.

System safety: Compressor overpressure/overheating/overcurrent protection, heater overheating protection, studio overheating protection (dual protection of main controller and independent overheating protector).

Other safety measures: fan overload protection, water shortage protection (for water-cooled models), fuses, etc.

3. Factory inspection standards

The manufacturer conducts strict factory inspections in accordance with national standards such as GB/T 10592-2008 "Technical Conditions for High and Low Temperature Test Chambers".

The inspection items include: temperature deviation, temperature fluctuation, temperature uniformity, heating and cooling rate, safety protection function, and continuous operation stability testing.

The model of the manufacturer of the high and low temperature impact test chamber in Hangzhou/Guangdong:

Model/Studio Size D × W × H

TS-50（cm）36×35×40

TS-80（cm）50×40×40

TS-108（cm）60×40×45

TS-216（cm）60×60×60

Control system for manufacturers of high and low temperature impact test chambers in Hangzhou/Guangdong:

◆ Refrigeration system: Imported German valley wheel semi enclosed water-cooled compressor unit/original French "Taikang"/fully enclosed air-cooled cascade compression refrigeration method.

◆ Circulating system: Temperature resistant and low-noise air conditioning motor, multi blade centrifugal fan.

◆ Temperature shock method: Cold and heat storage three box method (sample stationary).

Technical parameters of manufacturers of high and low temperature impact test chambers in Hangzhou/Guangdong

◆ Temperature range: A: -20 ℃~180B: -40 ℃~180 ℃ C: -60 ℃~180 ℃

Controller: * Japanese UMC-1300 true color touch screen (P, I, D, S, S, R) microcomputer integrated controller.

Low temperature zone temperature lower limit: 5 ℃ lower than the corresponding model.

◆ Temperature fluctuation: Both greenhouse and low-temperature chamber are ≤± 2 ℃ (at constant temperature)

◆ Temperature fluctuation in the sample area: ≤± 0.5 ℃ (at constant temperature)

Product Structure of Hangzhou High and Low Temperature Impact Test Chamber Manufacturer

During the impact test, the air valves in the high and low temperature zones are automatically opened to achieve high and low temperature impact testing.

◆ Insulation material: Hard polyurethane Ultra fine glass wool.

◆ Sample rack load-bearing capacity: not exceeding 30 kilograms.

Accuracy range: Setting accuracy: Temperature ± 0.1 ℃,

Indication accuracy: temperature ± 0.1 ℃, resolution: ± 0.1 ℃.

◆ Upper limit of temperature in high temperature zone: 200 ℃.

This system meets the reliability test specifications for cold and hot cycles.

◆ Outer wall material of the box: The outer surface steel plate is sprayed with plastic.

◆ Inner wall material of the box: SUS304 stainless steel plate.

The entire box is divided into three zones: high temperature zone, testing zone, and low temperature zone.

The test sample is placed on the sample rack, and a high-precision pneumatic system drives the valves in the thermal storage area or cold storage area to guide the airflow circulation, in order to achieve temperature uniformity for cold and hot testing