1、 Product Introduction:

The High and low temperature vehicle test room can be used to determine the adaptability of electronic products, components, materials, etc. for use and storage under conditions such as high temperature, low temperature, constant temperature, and temperature cycling changes; At the same time, it can conduct active hood development tests and assist in verifying the explosive performance of safety airbags/curtains and integrated instrument panels under high and low temperature conditions in the assembled state.

This laboratory adopts a reasonable structure and stable and reliable control method, which makes it aesthetically pleasing, easy to operate, safe, and has high temperature control accuracy. It is an ideal equipment for conducting high and low temperature tests, constant temperature tests, and alternating high and low temperature tests.

2、 Product advantages and technical features:

1. Utilize a multi-channel, environmentally friendly and energy-saving (low-noise) mechanical compression refrigeration system.

All materials, parts, components, raw materials, etc. of the device, whether domestically produced or imported, are made of environmentally friendly products; Based on the characteristics of mechanical compression refrigeration, a two-stage multi-channel main and bypass system is adopted. The multi-channel main and bypass can be adaptively selected and activated according to different working conditions. The entire control is automatically implemented by an intelligent control system according to the working conditions, changing the traditional way of using a temperature controller to control the heater to offset the cooling capacity to control the cooling capacity. So as to achieve energy-saving effect, not only does the energy consumption account for only 80% of similar products. It also reduces the operating load of the refrigeration compressor, reduces equipment vibration and noise, and improves control accuracy. To achieve better energy-saving effects, frequency conversion technology is adopted to adapt the refrigeration output of the refrigeration compressor to various temperature change rate requirements in the laboratory, while controlling the power loss during use to achieve energy-saving effects. Use sound-absorbing and silencing methods in different parts of the entire structure and mechanical working process to reduce the overall noise of the equipment.

2. Independently developed multi-channel and multi-stage throttling system (refrigeration system).

The refrigeration system of this equipment is designed with different capillary main paths and bypass paths according to different operating conditions. The capillary throttling system is automatically controlled and adjusted by the intelligent communication control system based on the operating conditions to ensure that the flow rate can be adjusted, achieving the purpose of temperature change. Moreover, the temperature field changes uniformly and the temperature fluctuation is minimal.

3. The broadband compression balance temperature control system is applied to achieve rapid temperature control through a fast convergence PID adaptive algorithm.

By using a temperature mixing chamber, a static pressure chamber, and a forced air duct system with centrifugal blades, sufficient exchange of cold and heat is ensured, and air is evenly supplied through the top orifice plate to each space in the working room (experimental area) to achieve temperature uniformity; To achieve rapid temperature convergence, our company has collaborated with Sanyuan Corporation in South Korea to develop a dedicated PID adaptive algorithm suitable for our company. This control method continuously adjusts the control according to the temperature situation during the control process, achieving the control objectives of fast sword retraction, small temperature overshoot, and high stability.

4. Realize remote visual control.

The device is equipped with a human-machine management interface and a touch mode automation control system to achieve automatic control; Simultaneously, connect to remote computers through RS485 communication interface to achieve network management and remote monitoring. The entire system is controlled and managed through a graphical interface, which is simple and fast, with automatic fault prompts. The graphical prompts are energy-saving and provide solutions to guide users in quickly troubleshooting. 2. Performance indicators and system composition of walk-in high and low temperature laboratory  

3、 Project Description

Product Name: Walk in High and Low Temperature Laboratory

Model WS-GL-60000D

Sample restrictions: This testing equipment prohibits the testing of flammable, explosive, and volatile substance samples; Test for storing corrosive substance samples, test for storing organisms, test for storing strong electromagnetic emission source samples, and storage

Capacity, weight and size, noise

Nominal internal volume 60.0m3

Effective size of inner box 4000X2500X6000 (mm) (width X height X depth) WXHXD (mm)

The effective size of the outer box is approximately 4200X2800X8000 (mm) (width X height X depth) WXHXD (mm) (height does not include motor height, depth does not include the length of the outer guide rail)

Weight approximately 5000 kg

Noise level within 70db (measured at a distance of 1 meter from the front of the machine and 1.2 meters from the ground)

Power, current, and power supply

The maximum installed power is about 115KW

The maximum current is about 110A

Power supply conditions and sources

3 ￠ 380VAC ± 10%, 50Hz three-phase four wire system N+protective grounding

Voltage allowable fluctuation range: 10%

Allowable frequency fluctuation range: (50 ± 0.5) Hz

The grounding resistance of the protective grounding wire is less than 4 Ω

Require users to configure corresponding capacity air or power switches for the equipment at the installation site, and this switch must independently control the use of the equipment

performance index

Functional requirement 1. (Air) indoor space cooling and heating;

2. According to the temperature setting, the indoor space reaches the set temperature

The test environment conditions are a temperature of+25 ℃, a relative humidity of ≤ 85%, and the values measured under the condition of no sample in the test chamber.

Meet the testing standards

Test method 1 GB2423.1-2008/IEC6008-2-1-2007 Environmental testing for electrical and electronic products Part 2: Test methods Test A: Low temperature

2. GB/T 2423.2-2008 Environmental testing for electrical and electronic products - Part 2: Test methods - Test B: High temperature

3. GJB150.3A-2009 High temperature test method

4. GJB150.4A-2009 Low temperature test method

5. GB/T 10589-2008 Technical Conditions for Low Temperature Test Chamber

temperature range

Temperature range:- 40～+90℃

The humidity requirement is to ensure a relative humidity of 10% to 70% RH (temperature 0-50 ℃), which is only displayed and not controlled

Control accuracy, temperature resolution: 0.01 ℃, temperature uniformity: ≤ 2.0℃

Temperature deviation: ± 1 ℃ Temperature fluctuation: ± 0.5 ℃

Temperature overshoot recovery time: ≤ 15min

Temperature deviation: ± 1 ℃ (central test area: 5000mm(L)X2000mm(W)X2000mm(H))

± 2 ℃ (other areas);

Heating and cooling rate (no load) -40 ℃ →+90 ℃, full temperature rise rate ≥ 3 ℃/min

+The cooling rate throughout the entire process from 90 ℃ to -40 ℃ is ≥ 1 ℃/min

Heating and cooling rate

(2T load test vehicle) 23 ℃ →+90 ℃ ≤ 60 min

+23℃→-40℃ ≤ 90 min

Note: The above performance indicators are measured under the conditions of an ambient temperature of+25 ℃, a water temperature of 28 degrees, a relative humidity of ≤ 85%, and no sample.

structure characteristics

Box body

The laboratory structure assembly panel is a detachable structure that is convenient for on-site installation. Bottom channel steel bracket support

Exterior material: Color steel plate with a diameter of 0.8mm

Interior material: stainless steel plate SUS304 with a diameter of 0.8mm

The thickness of the warehouse body is 100mm, and the thermal insulation material is rigid polyurethane foam

Electric transportation platform 1. The width * length of the transportation platform is 2600 * 5000mm, capable of carrying a 2.5T test vehicle with a wheelbase of 2.5-3m. The entire time from opening the box door to the transportation platform being in place is ≤ 30s;

2. The transportation platform is equipped with a test vehicle tire locking device to prevent the vehicle from moving sideways or forwards and backwards under static conditions;

3. The transportation platform is controlled by a transmission system through a traction rod to achieve the function of entering and exiting the working room on the guide rail;

4. The length of the guide rail outside the door is 6 meters, and the track sinks flush with the ground, ensuring the sealing of the junction between the track and the door.

5. The power source and transportation platform move together, and once the transportation platform enters the working chamber, it will be immediately locked by touching the travel switch; After the transportation platform exits the studio and reaches its designated position, it will immediately lock upon touching the travel switch

Lighting fixtures 1. Ordinary lighting fixtures on the top of the laboratory, side lighting fixtures, and mobile lighting fixtures outside the box are all required to be moisture-proof and explosion-proof; 2. Side explosion-proof lighting panel, used for high-speed camera shooting, can be controlled and divided, and has manual adjustment function. Each set of lighting panel is equipped with a bracket, with adjustable height. The lighting panel seat can rotate 360 degrees and can be adjusted along the X, Y, and Z axes; Within the 3000mm (L) X2000mm (W) X2000mm (H) test area, the illuminance at a distance of 0.5 meters from the light source shall not be less than 40000 LUX;

3. Equipped with 2 1200W mobile lighting fixtures outside the box, imported from a well-known brand

4. The light cannot be controlled on the computer, it can only be said that there is a dimming table that can be controlled

That means there is a console that can be controlled from a room outside the lights

Just like a TV studio, there is a control room

Bottom plate load: 1. Bottom plate: thickness=3mm SUS304 anti slip stainless steel plate;

2. The bottom of the workshop corresponds to the load-bearing position of the transport platform guide rail, which has undergone special reinforcement treatment to ensure that the transport platform can freely enter and exit the workshop even when carrying 2T test vehicles;

3. The indoor guide rail and outdoor guide rail are connected, and the bottom floor insulation layer is supported by a sleeper load-bearing structure for load-bearing. The maximum uniform load capacity meets the test vehicle of 2T, while the bottom does not deform

Exhaust system 1. There is an intake and exhaust damper installed on the top of the working room, with a maximum exhaust volume of 2000m3/h. The damper is driven by a cylinder to open or close, and can be manually controlled through the corresponding button switch on the operation panel. During exhaust, there is no need to open the box door, and an automatic switch intake port is required. The switch intake port is usually in a closed state;

The material of the door is the same as the warehouse board

The door is 100mm thick, and the thermal insulation material is rigid polyurethane foam

Electric door 1. Effective clearance size W2800 * H2500mm, opening time ≤ 4 seconds, with good sealing and anti leakage device;

2. Electric double door, anti reverse lock. Can be manually controlled, programmable (can be completed with one click: electric double door opening → transportation platform in place → box door closing operation)

Explosion proof observation window 1 and two observation windows on the door (each with a 400mm wide and 900mm high conductive film explosion-proof and anti fog tempered glass observation window on the door), with the lower edge of the shooting window 0.5m away from the surface of the transport platform;

2. Four observation windows on the side: There are two W1400 * H1000mm conductive film explosion-proof and anti fog tempered glass observation windows on each side. The lower edge of the shooting window is 0.5m away from the surface of the transport platform.

3. There are a total of 6 observation windows, which are required to have defrosting and defogging functions, facilitate shooting, and be able to withstand the impact force generated when the airbag cover plate flies out without breaking. The cover plate weighs 100g and flies out at a speed of 8m/s

Test lead holes 2 test holes, size: φ100mm, On the left and right sides of the studio, location to be confirmed by the client

The top of the air pressure balance device is equipped with 6 sets of air pressure balance devices to ensure pressure balance inside and outside the working room

Six sets of floor drains are installed at the bottom of the drainage system studio to facilitate the smooth discharge of condensed water from the studio to the outside

The air conditioning channel is equipped with an air chamber, a circulating air duct and a stainless steel circulating fan. Through the top back leaf window and a diffuser, the air is blown out evenly from the top, and the temperature in the mixing chamber is distributed to the test space, so as to achieve the goal of uniform temperature control

Control panel TEMI2700 LCD touch programmable controller imported from South Korea

Lighting switch, main power switch, RS-232 communication interface

Mechanical room refrigeration unit, exhaust fan, drainage device, steam outlet

Distribution control cabinet main power circuit breaker, controller, distribution