Describe：Utilizing a multi-channel, environmentally friendly and energy-saving (low-noise) mechanical compression refrigeration system, all materials, parts, components, raw materials, etc. of the equipment, whether domestic or imported
Consultation1、 Product Introduction:
1、 Product environmental protection and energy-saving technology advantages
Utilizing a multi-channel, environmentally friendly and energy-saving (low-noise) mechanical compression refrigeration system, all materials, parts, components, raw materials, etc. of the equipment, whether domestic 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、 The independently developed multi-channel and multi-stage throttling system (refrigeration system)
The refrigeration system of this equipment is designed with different capillary main and bypass paths according to different operating conditions of the system. The capillary throttling system is automatically controlled and adjusted by the intelligent communication control system according to the operating conditions, ensuring that the flow rate can be adjusted, achieving the purpose of temperature change, and the temperature field changes uniformly with minimal temperature fluctuations< br/>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
5、 Reasonable structural design
2、 Main functions of the device:
The main purpose of using the four comprehensive testing system equipment is to provide multiple laboratory simulation environmental conditions required for model matching products. It provides a rapid alternating temperature environment with a temperature range of -70 ℃ to 150 ℃ and a temperature change rate of up to 5 ℃/min, as well as a humidity environment with a relative humidity range of 20% to 98% for wet and heat testing. It also requires mechanical environments such as sine vibration, random vibration, sine+random, random+random, and impact. These three environments are combined to form a comprehensive laboratory simulation environment for routine testing of mass-produced products, stress screening testing, preliminary testing of newly developed products, and reliability testing of standardized (identified) products, providing data and guarantees for product reliability. Request the functionality of the device: a) Provide environmental conditions of high temperature, low temperature, humidity, and vibration individually or in combination with each other: b) Capable of setting high temperature, low temperature, humidity, vibration values, and program settings; c) It should have low-temperature dehumidification function, provide dry air blowing ability, and have the ability to conduct temperature humidity vibration combination or cyclic alternating tests that meet the local requirements of GJB150.24A; d)The air duct structure inside the box should form a uniform airflow field to the maximum extent possible, so that the temperature and humidity on the surface of the specimen are uniform, and meet the indoor wind speed requirements for climate chamber environmental testing specified in GJB150A; e) Capable of stable control of temperature change rate. f) Capable of recording and retrospectively checking parameters such as temperature, humidity, vibration operation time, and fault information, displaying faults, and prompting troubleshooting steps. g) It should have control and display functions for multi-channel temperature sensors and vibration sensors, and be able to record and output information separately; After the assembly of the three comprehensive equipment, each system should have data communication interfaces (serial and network ports) that can be connected to the laboratory data network for remote monitoring< III. Performance indicators and system composition of temperature, humidity and vibration comprehensive testing machine: |
Sample limitations | This testing equipment prohibits the testing of samples containing flammable, explosive, and volatile substances; Test for storing corrosive substance samples, test for storing organisms, test for storing strong electromagnetic emission source samples, and storage | |
Volume, weight, and size | ||
Product model | WS-4ZH-1000D | |
Nominal internal volume | 1000L | |
Effective size of inner box | 1000X1000X1000（mm） & nbsp;& nbsp; WXHXD | |
Exterior space | Approximately 2100X1900X3700 (mm)& nbsp; WXHXD (excluding lifting frame size) | |
weight | 2300㎏ | |
Work noise | ≤ 75db measured at a distance of 1 meter in front of the machine and 1.2 meters above the ground | |
Power, current, and power supply | ||
maximum power | About 60KW | |
Maximum current | About 7* | |
Power supply conditions And power supply
| AC380V three-phase four wire+protective grounding; The allowable voltage fluctuation range is ± 10% V; The allowable frequency fluctuation range is 50 ± 0.5HZ; TN-S power supply or TT power supply 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 be independently controlled. When placing the powered sample in the box of this equipment, please use an external power source for the sample power supply, and do not directly use the local power supply; | |
4、 Performance indicators: | ||
Performance parameters of temperature and humidity test chamber | ||
Temperature and humidity range | Temperature range:- 70～150℃ Humidity range: 20-98% RH (as shown in the figure) | |
control accuracy | Temperature resolution: 0.01 ℃& nbsp;& nbsp;& nbsp;& nbsp;& nbsp;& nbsp;& nbsp;& nbsp;& nbsp;& nbsp;& nbsp;& nbsp;& nbsp;& nbsp;& nbsp;& nbsp;& nbsp; Temperature deviation: ± 1.5 ℃& nbsp;& nbsp;& nbsp; Temperature uniformity: ≤ 3.0℃ Temperature fluctuation: ± 0.5 ℃ | |
Humidity control accuracy | Humidity resolution: 0.1% RH Humidity deviation:& nbsp;＞ ± 3.0% RH at 75% RH; ≤ ± 5.0% RH at 75% RH Humidity uniformity: ≤ 3%RH Humidity fluctuation: ± 2% RH | |
High altitude low pressure | 32Km (air pressure 10mbar) Height change rate 5Km/min，﹣7Km/min； (Below 20 km) 3Km/min，﹣10Km/min； （20～30 Km） | |
Temperature change rate | 1. ≥ 5 ℃/minute (-70 ℃~+150 ℃) (blind test during no-load installation) | |
Note: 1. The above performance parameters are measured at a water temperature of 25 ℃ without a sample; 2. Maximum vibration table size: length 1000mm * width 1000mm, vibration table provided by the customer 3. Damp heat laboratory without heat source load | ||
Execution standards and testing meet the conditions | 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 GB2423.22-2008 Environmental testing for electrical and electronic products Part 2 Test methods Test Nb: Temperature change at a specified rate 6. GBT 2424.5-2006 Environmental Testing Temperature Test Chamber Performance Confirmation for Electrical and Electronic Products 7. GB/T 10589-2008 Technical Conditions for Low Temperature Test Chamber 8.GB/T2423.3-2008(IEC68-2-3) Test Ca: Constant Damp Heat Test Method 9.GJB150.9A-2009 Damp heat test method 10. G/BT 2423.4-2008/IEC6008-2-30:2005 Test Db: Alternating Damp Heat Method 11. GB/T5170.18-2005 Basic parameter calibration method for environmental testing equipment for electrical and electronic products Temperature/humidity combined cycle testing equipment 12. GB/T10586-2006 Technical Conditions for Damp Heat Test Chamber 13. GBT 2424.6-2006 Environmental Testing for Electrical and Electronic Products - Temperature and Humidity Test Chamber Performance Confirmation 14. GBT 2424.7-2006 Environmental testing for electrical and electronic products - Measurement of temperature test chambers A and B (with load) GB-T2423.35-2005 Test Method for Low Temperature Sinusoidal Vibration 16. GB-T2423.36-2005 High temperature sinusoidal vibration test 17. GBT5170.13-2005 Inspection Method for Vibration (Sinusoidal) Mechanical Vibration Test Equipment 18. GBT2423.34-2005 Environmental Testing for Electrical and Electronic Products Part 2 Test Methods Test ZAD Temperature Humidity Combined Cycle Test | |
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