Intelligent air conditioning training and assessment device

NegotiableUpdate on 12/03

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Overview

DB-633 Intelligent Air Conditioning Training and Assessment Device I. Overview DB-633 Intelligent Air Conditioning Training and Assessment Device is developed and designed for refrigeration and air conditioning majors, various skill training, and national vocational skill appraisal departments in colleges and universities. It is suitable for teaching and training requirements such as refrigeration principles and applications, refrigeration and air conditioning technology, refrigeration and air conditioning equipment maintenance and operation

Product Details

DB-633 Intelligent Air Conditioning Training and Assessment Device

1、 Overview
The DB-633 intelligent air conditioning training and assessment device is developed and designed for the refrigeration and air conditioning majors, various skill training, and national vocational skill appraisal departments in colleges and universities. It is suitable for teaching and training requirements such as "refrigeration principles and applications", "refrigeration and air conditioning technology", "refrigeration and air conditioning equipment maintenance and operation". This device integrates refrigeration system, electrical control system, and fault simulation system, with a reasonable layout and beautiful appearance.

(Reference image)

2、 Characteristics
1. The entire system is authentic and complete, and its overall structure and performance are basically the same as those of air conditioners in the market. It has functions such as cooling, heating, ventilation, dehumidification, temperature and wind speed selection, timing and sweeping control, sleep, automatic, etc
2. The device visually displays the system structure and working principle of the air conditioner, facilitating teaching demonstrations and explanations, as well as students' understanding and mastery of textbook knowledge. The configured AC voltmeter, AC ammeter, thermometer, vacuum pressure gauge, and corresponding signal indicator lights make the real-time working status of the entire air conditioning system clear at a glance; The electrical control system schematic is printed in the middle of the front panel, and there are corresponding testing points.
3. On the back surface, the structural principle of the entire refrigeration system and the actual objects of the main components can be observed, and the corresponding components are labeled with names; And equipped with a liquid sight glass to observe the refrigerant state
4. This training device is equipped with fault simulation function, provides wiring area for outdoor execution components, and offers practical training projects with strong practicality. Beneficial for students to apply theory to practice and cultivate their practical and hands-on abilities; Beneficial for conducting skill appraisal and assessment work
5. Equipped with current type leakage protection device; And there are thermal protection devices to provide overheating and overload protection for the compressor; The strong electrical connection wires and sockets for practical training adopt a pistol plug fully enclosed structure, which is easy to use, reliable, and anti electric shock
6. The refrigeration system is equipped with manual throttle valves and automatic throttle devices, which can simulate different cooling modes and fault settings in different environments
7. There is a printed schematic diagram of the refrigeration system at the back of the experiment, which is made of iron sheet metal and measures 1000 * 300mm in size
8. Provide software that can monitor voltage, current, frequency, power, power factor, pressure, flow rate, etc. It can be displayed in real-time on a PC and printed.
9. The main electrical components of the air conditioner can be manually connected, which is very easy to operate. The connecting wire uses a dedicated D4 cable.
Teacher end: Up to 124 student computers can be connected through the main server to monitor the network data of the student laboratory, such as temperature: various main temperatures of the 124 air conditioners in the room, the working status of the air conditioners, and the opening degree of the throttle system When any one of them is found to be working abnormally, the teacher can directly modify and control the working status of any student experimental platform through the teacher's computer software, so as to restore the air conditioning to normal. At the same time, software is provided to monitor voltage, current, frequency, power, power factor, pressure, flow rate, etc., which can be displayed in real time on a PC and printed.
Student end: The network data of the student's local experimental platform can be monitored through the student computer, such as temperature: various main temperatures of the air conditioner, the working status of the air conditioner, and the opening degree of the throttle system
10. ★ Test the compressor at different cooling capacities under different pressures in the evaporator, with automatic adjustment of compressor subcooling/overheating
11. ★ Changed the difficulty of adjusting and damaging the mechanical throttling device during the experiment, allowing students to learn electronic control methods, operation adjustment methods, and technical parameter adjustments during the experiment
12. ★ External control mode: Can be developed for the second time into 4-20Ma input mode and 0-5V control mode.
13. Animation mode: In touch screen or software connection mode: each displays the status of the pump or cooling workflow by themselves,
14. Animation mode: In touch screen or software connection mode, the compressor's exhaust temperature, suction temperature, condensation temperature, and evaporation temperature can be displayed, and the unit's subcooling can be adjusted in real time according to the temperature. Overheating.
15. ★ Cooling Capacity Adjustment Control Device: The system consists of three parts: display module, functional module, and upper computer software. (The manufacturer can configure and combine them according to product performance at the factory.)
1) By automatically adjusting and increasing the refrigerant flow rate, the exhaust temperature of the compressor can be effectively reduced, and the high-efficiency working area of the compressor can be expanded. By adopting a bidirectional electronic control system, it is possible to achieve energy-saving control and automatic flow adjustment of bidirectional heat pump functions, cold storage control, air refrigeration units, variable frequency units, and central air conditioning units.
2) The upper computer software simultaneously monitors the status of the system online (optional). The digital display shows the opening, temperature, and fault codes online. The digital display screen displays the opening, temperature, and fault codes online
★ 3) Embedded host, using touch screen control, can directly enter the system adjustment, voltage 5-36V/50HZ, with power on voice function, size 5 inches, memory 156M, capacitive.
4) Equipped with upper computer adjustment and manual adjustment functions
5) The refrigerant flow rate of the self cooling system can be set to the minimum opening.
6) Automatic adjustment: The device has a power-off memory function during operation, which keeps the current value unchanged. Ensure valve opening under refrigeration/heat pump/cold storage/water machine conditions.
7) Real time display of opening: The control object is set to a maximum opening of 5000 degrees.
8) Software control, capable of online temperature control of the system, reading the flow opening of the refrigeration refrigerant in the optimal temperature system, adjusting the superheat and subcooling of the refrigeration unit. On the left side of the text display interface, real-time operational data of the current unit is displayed in the form of text. On the upper right side of the interface, there is a display of communication information, including the settings of communication roles and ports, as well as the display of the current communication status. In the lower part of the "Data Information" on the right side of the interface, display information such as which data frame is currently received, the address of the received data frame, etc.
9) Refrigerants in automatic refrigeration systems, such as R134AR22R410A and other refrigerants.
10) Manual 4-channel real-time temperature display: The controller simultaneously detects the cooling multi-point temperature of the system to control the unit's subcooling/superheat.
11) 29 parameter control parameter settings/queries on the display interface: All 29 parameters related to control, such as temperature parameters, time parameters, control parameters, etc., in the controller can be adjusted to adapt to equipment such as refrigeration/heat pumps/cold storage/water machines.
12) The simulated environment data input settings for road users are shown in the following figure: During debugging, software simulation settings can be used to simulate the valve opening status of the refrigeration unit under various temperature conditions to accumulate a large amount of data, and set the standard opening value based on the characteristics of each refrigeration unit.
13) The F)、 Up to 8 channels of equipment operation monitoring: online monitoring of the operating status of the compressor, expansion valve, temperature at each point, protection action circuit, etc. of the unit.
14) Control range of subcooling/heat: 2-15 degrees Celsius. You can set the subcooling and superheat values of the refrigeration unit to provide design data.
15) Manual setting of temperature and opening can be displayed and queried/set: All temperatures detected by the controller can be queried, and the opening can also be queried and displayed in real time
16) Manual setting and adjustment function: During the development and debugging phase of the unit, effective test data can be obtained by manually adjusting the function through the controller.
3、 Technical parameters
1. Working power supply: AC220V 50Hz ± 5%
2. Dimensions: 1100 × 800 × 1800mm
3. Power consumption of the whole machine: 1100W
4. Applicable voltage range: 160V~253V
5. The maximum remote control distance is 8m and the angle is 90 degrees.
6. Noise: The internal unit has a noise level of 37-44dB, while the external unit has a noise level of 55-65dB.
7. Environmental temperature: -5 ℃ -40 ℃
8. Relative humidity: ≤ 85% (25 ℃)

4、 Basic equipment of the device
1. Power supply and instrument control panel
The control screen is made of aluminum alloy structure and aluminum panel, providing AC power supply, various testing instruments and training devices for practical training. The specific functions are as follows:
2. AC power control unit: single-phase three wire 220V AC power supply, with one AC voltmeter measuring range of 0-250V for monitoring grid voltage, and one AC ammeter measuring range of 0-10A for observing system startup current and monitoring system normal working current. The leakage protector controls the total power supply of the control panel, and the power supply of the control panel is controlled by a key switch
3. Refrigeration system pressure detection unit: Provide 2 vacuum pressure gauges with measurement ranges of -0.1~0.9MPa, -0.1~1.5MPa, and -0.1~3.5MPa, respectively, for measuring air conditioning
4. Temperature detection unit: Provide four three and a half digit temperature gauges, including compressor exhaust temperature, return air temperature, condenser temperature, and evaporator temperature, to display temperature changes at different points and visually analyze air conditioning faults.
5. One set of current type leakage protection device: When the ground leakage current exceeds a certain value, it will trip and cut off the power supply; Equipped with thermal protection devices to provide overheating and overload protection for the compressor.
6. Pressure sensors 4-20MM, two, one high pressure sensor, one low pressure sensor, learn the application of pressure transmitters in modern air conditioning systems.
7. Pressure controller: Protects when the high pressure is too high during experimental conditions. Protect the compressor when the low pressure is too low,
8. Training table: The training table is made of aluminum alloy double-layer matte dense pattern spray coating structure, waterproof, wear-resistant high-density board, sturdy structure, and beautiful and generous shape; The desktop is used to install the power control screen and provide a spacious and comfortable workspace. The training table is also equipped with four universal wheels, which are easy to move and fix, and are conducive to the layout of the training room.
9. Fault: Provide simulated air conditioning and multiple fault connection points, provide common air conditioning electrical circuit connections, to simulate system faults; The setting types include: power circuit, temperature sensing circuit, drive circuit, compressor protection circuit, indoor fan speed control circuit. 10. ★ Under different pressures of the evaporator, the compressor can be tested for different cooling capacities, with automatic adjustment of compressor subcooling/overheating
10. ★ Changed the difficulty of adjusting and damaging the mechanical throttling device during the experiment, allowing students to learn electronic control methods, operation adjustment methods, and technical parameter adjustments during the experiment
11. Animation mode: In touch screen or software connection mode: each displays the status of the pump or cooling workflow by themselves,
12. Animation mode: In touch screen or software connection mode, the compressor's exhaust temperature, suction temperature, condensation temperature, and evaporation temperature can be displayed, and the unit's subcooling can be adjusted in real time according to the temperature. Overheating.
5、 Configuration Table

serial number	name	name	quantity
1	Compressor 1P		1 set
2	Liquid sight glass		1 set
3	condenser		1 set
4	evaporator		1 set
5	fan		1 set
6	High voltage gauge	panel	1 set
7	Low voltage gauge	panel	1 set
8	fan		1 set
9	Manual expansion valve		1 set
10	filter	3/8	1 set
11	Capillary tube,		1 set
12	thermometer	I900	1 set
13	Multi functional software		1 set
14	pressure sensor	3PM-4-20MA	2 sets
15	High and low voltage controller		1 set

6、 Training Program
1. Basic Skills Training for Technicians
2. Basic operation of specialized tools
3. Welding of system pipe fittings
4. System leak detection
5. Vacuum pumping and refrigerant charging training for refrigeration systems
6. Skill training design, installation, debugging, and maintenance
7. Outdoor fan does not turn, air conditioning pressure increases, pressure protection action, whole machine protection training
8. Fault and analysis of the four-way valve of the air conditioner, which cannot operate in the heat pump state,
9. Insufficient refrigerant, testing and fault analysis and troubleshooting
10. Fault phenomenon of capillary tube blockage
10. Measurement of electrical components and system operation
11. Installation of air conditioning,
12. Training on Air Conditioning Relocation and Recycling
13. Troubleshooting of air conditioning fan malfunction and air conditioning alarm fault codes