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The system structure of the cold and hot impact test chamber is divided into high temperature tank (preheating zone) and low temperature tank (precooling zone). The sample is placed in the test zone. During the impact, the temperature of the high temperature zone or low temperature zone is driven into the test zone by the high pressure cylinder for temperature impact, so as to achieve the purpose of drastic temperature change. The test product is static. This test chamber is applicable to assess the ability of complete machine products, components, parts, materials, etc. to withstand sharp temperature changes. This temperature impact test is used to evaluate the test sample caused by thermal expansion and contraction in the shortest time

Purpose The system structure of the cold and hot impact test chamber is divided into high temperature tank (preheating zone) and low temperature tank (precooling zone). Some samples are placed in the test zone, and the temperature of the high temperature zone or low temperature zone during impact passes

 

The high pressure cylinder drives into the test area for temperature impact, so as to achieve the purpose of drastic temperature change. The test product is static. This test chamber is applicable to assess the ability of complete machine products, components, parts, materials, etc. to withstand sharp temperature changes. This temperature impact test is used to evaluate the test sample due to thermal expansion and contraction in the shortest time

 

The chemical change or physical injury caused by the temperature change can be understood. The main parameters affecting the temperature change test are the high and low temperature values of the temperature change range, the holding time of the test sample at high and low temperatures, and the number of cycles of the test. The cold and hot shock box is the test equipment for the electronic, LED, metal, plastic, rubber, paint, electronic and other material industries.

 

Product features: 1. The equipment is brand new, the structure design of the test system is advanced and reasonable, and the manufacturing process is standardized. It is a product developed independently and has independent intellectual property rights, with beautiful and generous appearance.

 

2. The main functional components of the test chamber are of high-quality configuration (high gold content), advanced and reliable technical principles, and the noise and energy saving are under the best control - its performance can be comparable with that of similar foreign products.

 

3. The matching and assembly of parts and components are good. The main functional parts and components are equipped with fittings, which improves the safety and reliability of the product and can ensure the users' long-term and high-frequency use requirements.

 

4. The equipment has good operability, maintainability, good temperature stability and durability, good safety performance, and does not pollute the environment and endanger human health.

 

5. All wires in the control cabinet have serial numbers and numbers printed by special equipment. The lines are clear and clear.

 

Volume and size

 

Effective volume 225L

 

Inner box size W500 × H600 × D750 mm

 

Outer box size W1500 × H2200 × D2200 mm

 

Performance (measured at ambient temperature+5 ℃~30 ℃ under no-load condition)

 

Temperature range: - 60 ℃~+180 ℃

 

Impact temperature range High temperature 40 ℃~+150 ℃

 

Low temperature - 10 ℃~- 40 ℃

 

Preheating temperature range+60 ℃~+180 ℃

 

Temperature rise time of high temperature bath RT (room temperature)~+180 ℃ ≤ 30min (room temperature is+10~+30 ℃)

 

Pre-cooling temperature range - 10 ℃~- 60 ℃

 

Low-temperature bath cooling time RT (room temperature)~- 60 ℃ ≤ 70min (at+10 -+30 ℃)

 

Temperature fluctuation ≤± 0.5 ℃

 

Temperature uniformity ≤± 2.0 ℃

 

Damper switching time ≤ 5S

 

Impact resetting time - 40 -+150 ℃ ≤ 5min

 

Power supply AC3 ￠ 5W 380V 50Hz (R, STN three-phase four-wire plus grounding wire) (voltage fluctuation ≤± 10%)

 

Total power 28KW

 

Performance ambient temperature: 0~+30 ℃

 

Cooling mode The equipment adopts water cooling mode

 

Energy-saving design refrigeration system can adjust the power according to the size of the load. VRF technology based on PID+PWM principle is adopted (electronic expansion valve is controlled by refrigerant flow servo under thermal condition), and has compressor energy regulation technology, which can achieve energy-saving effect

 

Structural material

 

Inner box material: stainless steel plate (SUS # 304), Korean Pu box

 

External box material baking paint

 

Thermal insulation material: polyurethane foam and glass fiber (fire resistant and fireproof)

 

Single door

 

Test material storage rack stainless steel SUS304 # adjustable spacing storage track 2 groups, grid storage rack 2

 

Tablets. Each layer bears 20kg. The sample rack can be adjusted up and down as required.

 

The door of the sealing test chamber is sealed with silicone rubber strips, which are resistant to high and low temperatures, aging and good sealing performance

 

Four sets of high-quality fixed universal movable wheels (easy to move) and flat water feet cup (adjust the balance of the machine body

 

Manufacturing features 3D full-parameter modeling, intelligent and efficient; PC virtual assembly will be carried out before manufacturing to ensure perfect functions without design omission; Motion simulation and stress analysis to ensure the rationality of design.

 

Channel modularization - ensure manufacturing consistency and batch performance stability.

 

Splicing treatment - high and low temperature resistant sealant imported from Japan and stainless steel batten sealing treatment are added to ensure that the equipment will not deform and the structure will not leak during long-term use.

 

3S manufacturing management process - manufacturing in the factory according to fixed scientific process to ensure high efficiency and stable quality; Avoid making at the customer's site. The process flow cannot be guaranteed, resulting in unstable performance. Welding and gluing process pictures

 

Air supply system

 

Air supply characteristics Horizontal air supply

 

Circulation motor Taiwan, China Yizheng Motor

 

Multi-wing centrifugal circulating fan with high and low temperature resistant aluminum alloy blades

 

Refrigeration system

 

Refrigeration mode Cascade compressor refrigeration system

 

Compressor American brand "Emerson" fully enclosed scroll compressor

 

Refrigerant American Honeywell R404 refrigerant and Guangzhou Blue Sky R23 refrigerant

 

Condenser water-cooled condenser (water distribution tower)

 

Evaporator High-efficiency multi-stage aluminum alloy finned evaporator (fin thickened type)

 

Heat exchanger High-efficiency ST plate heat exchanger

 

Oil separator Emerson

 

Electronic expansion valve 1) Danfoss electronic expansion valve. Refrigerant flow servo control (i.e. "static balance" technology of refrigeration without heating and heating without cooling)

 

2) As a new type of control component, the electronic expansion valve has already broken through the concept of throttling mechanism. It is an important part of the intelligent refrigeration system, and also an important means and guarantee for the real realization of the optimization of the refrigeration system.

 

3) Product features:

 

1. Fully enclosed design, driven by stepping motor

 

2. From full close to full open in a very short time

 

3. High accuracy, extremely long service life

 

4. The flow rate changes linearly and has a wide range of cooling capacity

 

5. Continuous cooling capacity adjustment, no liquid hammer in the cooling circuit

 

6. The motor and valve are integrated, with high reliability. The valve plate and valve port parts made of ceramic materials are wear-resistant

 

4) Key Benefits

 

1. Realize the active control of the refrigeration system, instead of the uncontrollable fixed proportion adjustment of the original thermal expansion valve. The output can be adjusted in advance and optimized for different modes and working conditions.

 

2. Because the dead cycle control feedback front end of the electronic expansion valve is directly controlled by temperature and pressure double sensors with high response, it can provide the best evaporator liquid supply, so that the refrigeration system can achieve the refrigeration capacity output in a wider working range.

 

3. Energy saving: electronic expansion valve self-adjusts in the whole range+actively adjusts the output of refrigerating capacity, making the system more energy saving

 

Solenoid valve Danfoss, Denmark or Castor, Italy

 

Cushion hose Casto, Italy

 

Insulating pipe, Paris, USA

 

heating system

 

Heating tube electric heating, high-quality nickel-chromium alloy electric wire type, PID pulse width control SSR automatic adjustment of heating power.

 

The control mode is controlled by the controller output signal to achieve high-precision contactless opening through SSR solid-state relay

 

control mode

 

Controller "7-inch" Chinese and English true color touch screen human-computer interface (picture to talk) computer control, USB curve recording, data storage device

 

The controller features a large LCD LCD controller with adjustable backlight function, which is independently developed as a touch-control LCD screen direct button type controller

 

1. Controller specification: a. Accuracy: temperature ± 0.1 ℃+1 digit

 

B. Resolution: temperature ± 0.1

 

C. It has upper and lower limit standby and alarm functions

 

D. Temperature input signal T type

 

E. P.I.D control parameter setting, P.I.D automatic calculation

 

2. Screen display function: a. Draw face to face, without key input, and touch options directly on the screen

 

B. Temperature setting (SV) and actual (PV) values are displayed directly

 

C. Display fault status and explain troubleshooting methods

 

D. It can display the current execution program number, segment number, remaining time and cycle number

 

E. Temperature program setting value is displayed in graphic curve, with real-time display program curve execution function

 

F. With separate program editing screen, temperature, time and cycle number can be input

 

G. The screen can be adjusted for backlight

 

H. The screen display protection function can be set for timing, TIMER or manual shutdown

 

3. Program capacity and control function:

 

A. Available program groups: 96 PATTEN at most (i.e. 96 test specifications can be set)

 

B. Repeatable commands: each command can be executed up to 999 times

 

C. SEGMENTS time setting 0-99Hour59Min

 

E. It has power-off program memory, and automatically starts and continues to execute the program function after power-off

 

F. The graphic curve can be displayed in real time during program execution

 

G. It has the function of reservation startup and shutdown

 

H. With date and time adjustment function

 

Protection function

 

Protection alarm device 1. Overtemperature (high temperature) protection of test object (independent, settable on the panel)

 

2. There is a fuse free short circuit breaker protection switch

 

3. Heater overtemperature and overload protection switch

 

4. Compressor overload and overheating

 

5. Compressor high and low pressure and oil shortage protection

 

6. System overcurrent/undervoltage protection device

 

7. Control circuit current limiting protection

 

8. Controller self-diagnosis fault display

 

9. Low cooling water pressure protection

 

10. Under-phase protection, leakage protection and short circuit protection of power supply

 

11. Load short-circuit protection

 

12. Safety grounding wire terminal

 

13. Underpressure of cooling water supply

 

14. Air conditioning channel limit overtemperature

 

15. Fan motor overheat or overload protection

 

Configuration list

 

Independent research and development of controller

 

AC contactor Schneider

 

Solid state relay Yangming, Taiwan, China, China

 

Phase sequence protects Taiwan, China Shilin

 

Intermediate relay Schneider

 

Transformer Zhejiang Zhengtai

 

Circuit breaker Zhejiang Chint

 

Heating pipe Dongguan Wade

 

Electric Taiwan, China Yizheng

 

Wire Dongguan Mingfeng

 

Compressor Emerson

 

Refrigerant R404 (Honeywell, USA)

 

Refrigerant R23 (Guangzhou Blue Sky)

 

Oil separator Emerson

 

Solenoid valve Danfoss, Denmark or Castor, Italy

 

Expansion valve Danfoss, Denmark

 

Drying filter Danfoss, Denmark

 

Shock absorber, Casto, Italy

 

Insulating pipe, Paris, USA

 

Evaporator Dongguan Jiaheng (customized according to use requirements)

 

Condenser Dongguan Jiaheng (customized according to use requirements)

 

High and low switch Danfoss, Denmark

 

Frozen oil ice bear

 

Water Tower Liangyan

 

Case: Korean Pubox 304#