Household central air conditioning training and assessment equipment

NegotiableUpdate on 11/13

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Nature of the Manufacturer: Producers

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Overview

DB-JD14 Home Central Air Conditioning Training and Assessment Equipment is a product developed in accordance with the requirements of the Ministry of Education's revitalization of the 21st century vocational education curriculum reform and textbook construction plan, and in accordance with the teaching and training requirements of vocational education

Product Details

DB-JD14 Household Central Air Conditioning Training and Assessment Equipment

The household central air conditioning training and assessment equipment is a product developed in accordance with the requirements of the Ministry of Education's "Revitalizing the Curriculum Reform and Textbook Construction Plan for 21st Century Vocational Education" and the teaching and training requirements of vocational education. Suitable for practical training in refrigeration technology, refrigeration fluid machinery, principles and maintenance of household refrigeration equipment, cold storage and refrigeration technology, refrigeration equipment maintenance workers (junior, intermediate, advanced) in vocational colleges and vocational schools. Cultivate theoretical knowledge and practical skills in the field of air conditioning and refrigeration technology, and engage in the upgrading of air conditioning, refrigeration equipment, and system technology
The training and assessment equipment for household central air conditioning is also suitable for ordinary colleges, technical schools, vocational training schools, vocational education centers, appraisal stations/institutes, refrigeration majors such as "Refrigeration Equipment Maintenance Worker (Advanced)", "Refrigeration Equipment Principles and Maintenance", "Refrigeration Air Conditioning Unit Operation, Installation and Maintenance", "Central Air Conditioning Worker (Junior, Intermediate, Advanced)", "Household Refrigeration Equipment Principles and Maintenance" and other courses.

1、 Characteristics
1. Using real household central air conditioning for training assessment: The system adopts a domestic brand one to three unit, which is characterized by excellent quality, small size, and compressor. The digital capacity adjustment solenoid valve controls the compressor through pressure to achieve the purpose of unloading/loading. Corresponding to different terminal processors, the capacity can be infinitely adjusted from 10% to 100% by changing the compressor unloading/load ratio. Realize system authenticity and flexibility.
2. Diversification of system terminal processing units: adopting three forms of terminal processing units: courtyard type (embedded), wall mounted, and fan coil unit; Enable students to understand the diverse structural forms of indoor units.
3. Each terminal processor is equipped with a refrigeration system process board, control circuit process board, temperature gauge, and pressure gauge, which can observe all control circuits of the unit.
4. Integrity and independence of the system: Its control, protection, and display functions are completely consistent with those of actual household central air conditioning, and each user terminal can be independently controlled under the same operating conditions.
5. The control panel can be put into use with only AC power supply, occupying a small area, saving space, and reducing infrastructure investment.
6. The device intuitively displays the system structure and working principle of household central air conditioning, which facilitates teachers' demonstration and students' understanding and mastery of textbook knowledge. The actual objects that demonstrate the structural principles and main components of the refrigeration cycle system, including the high-pressure and low-pressure pipelines painted in red and blue, and equipped with liquid sight glasses to observe the refrigerant status. The structure is reasonable and the appearance is beautiful. The device is compact and the appearance is elegant. The training table is also equipped with four universal wheels and four fixed adjustment mechanisms, which are easy to move and fix.
7. The training device system is equipped with a simulated fault setting function, which can set faults in the refrigeration system and electrical system. Improving students' analytical ability through specific phenomena is beneficial for them to apply theory to practice and cultivate their practical hands-on skills.
8. Equipped with current type leakage protection device, if the ground leakage current exceeds a certain value, it will trip and cut off the power supply; And there are thermal protection devices that provide overheat and overload protection for the compressor.
2、 Technical parameters
1. Input power supply: single-phase three wire~220V ± 10% 50Hz
2. Work environment: The ambient temperature range is -5 ℃ to+40 ℃, with a relative humidity of less than 85% (25 ℃) and an altitude of less than 4000m
3. Device capacity: ＜ 3.8kVA
4. Dimensions: 4000mm × 1100mm × 2100mm
5. Safety protection: equipped with leakage voltage and leakage current protection devices, in compliance with national standards for safety
3、 Basic equipment of the device
It fully demonstrates the structural form, control principle, parameter changes under different operating conditions, and air conditioning refrigeration system flowchart of household central air conditioning. One set of digital one to three unit: The air conditioning system adopts market digital units, and the indoor unit is composed of terminal processing units. One set of courtyard type (embedded), one set of wall mounted, and one set of fan coil unit constitute the indoor terminal unit processing system; Enable students to understand the diverse structural forms of indoor units. Each terminal unit processing system is independent of each other.
The entire simulated roof adopts a 1.5mm multifunctional mesh plate design, which is convenient and quick to install fan coil units and courtyard type (embedded), using professional household central air conditioning dedicated hangers. The wall mounted installation board also adopts a multifunctional mesh board design
1. Installation of training rack: The training device adopts a mobile frame 4040 aluminum profile structure, with a bottom bent with 3MM sheet metal and four fixed support feet. After installation, the position can be fixed to prevent movement and pulling of the refrigeration system pipeline.
2. Intelligent temperature control system: Intelligent temperature control can measure and display the temperature of the controlled object, adjust the upper and lower temperature limits, and complete functions such as cooling, heating, and shutdown; Display the working status and facilitate observation of the temperature inside the air-conditioned room, making it easy to operate.
3. System flowchart: Workflow diagram board, detailing the refrigeration system process, monitoring point temperature, system pressure, working status indication, and system component description.
4. Three sets of system measuring instruments: equipped with pointer vacuum pressure gauges, capable of measuring the working pressure of the internal machine.
5. 3 sets of temperature measurement instruments: 3 sets of digital temperature gauges, voltage 220V/resistance 10K, thermometer -50-120 degrees, used to measure the key temperature points during system operation, which is beneficial for judging system faults during experiments.
6. Power measuring instruments: composed of AC voltmeter, AC ammeter, etc., measure the working current and voltage of the entire system. It can determine the working status of the air conditioning system and the amount of refrigerant.
★ 7. Intelligent assessment system: Using the latest MCU technology RAM processing chip digital integrated circuit board and supporting wireless fault setting control system, the system is stable and not easily infected with viruses.
6.1. The control module (PC control terminal or handheld mobile control terminal) and the drive module (intelligent fault setting drive box) are separated to avoid complex wiring interference with the controller, making the system more reliable.
6.2. The driver module is equipped with an intelligent fault setting control system, a dedicated new wireless data transmission module (plug-in type), and an RS232 serial communication interface, which can be used for wireless networking communication and RS232 wired communication.
6.3. The handheld mobile control terminal adopts a 7-inch high-definition color LCD touch screen, a Chinese menu style touch operation interface, and user-friendly human-machine dialogue. The handheld mobile control terminal can control any training equipment with a drive module.
6.4. When the handheld mobile control terminal is not connected to the internet, it can be operated as a standalone device. When the training equipment with a driver module is wirelessly networked, the handheld mobile control terminal can wirelessly enter the network as a networked terminal, which can be used as an operation terminal for student machine login to training and assessment, or as an operation terminal for teacher machine login to problem solving.
6.5. Training assessment can be conducted through a PC or tablet control terminal, or through a handheld mobile control terminal. The teacher and student interfaces are separated, and the teacher enters the teacher interface with a password to ask questions, while the students answer questions on the regular interface. (Note: The schematic diagram of the fault setting and troubleshooting interface between teachers and students is completely consistent with the schematic diagram of the equipment panel)
6.6. Various common faults related to any location can be freely set, including line open circuit, ground short circuit, poor contact, occasional and other fault phenomena. Each driver module can be set with 8 open circuit faults for high current 5A and 16 open circuit faults, defects, occasional faults, short circuits, etc. for low current 2A signal paths, for a total of 24 fault settings. 64 high current 5A open circuit faults and 128 low current 2A signal paths with open, poor, occasional, short circuit and other faults can be extended according to the needs, for a total of 192 fault settings. The number and type of fault settings can be adjusted according to user requirements.
6.7. All training equipment equipped with driver modules can achieve remote centralized management through the built-in dedicated new wireless data transmission module wireless networking.
6.8 Users can choose to form a wireless fault setting control system with other training equipment through wireless or RS-232 serial communication to form a network. The main control computer controls the fault setting, troubleshooting, parameter setting, remote start, information feedback, assessment scoring and other functions of each training equipment.
7. Power module: Aluminum alloy hanging box size: 440MM * 496MM iron panel, color spray painted, equipped with voltmeter, ammeter, pipeline connection schematic, and computer fault online testing terminals.
8. Host hanging box: Aluminum alloy hanging box size: 440MM * 496MM iron panel, color spray painted. The principle of system capacity setting and electrical wiring diagram for inkjet printing
9. Fan coil control unit hanging box: aluminum alloy hanging box size: 505MM * 496MM iron panel, color spray painted. Spray painting includes the principle of system capacity setting, fault principle electrical wiring diagram, and fault code table. The fault location can be determined by analyzing the handheld device The power supply can independently turn on and off a single system, and is equipped with a temperature measurement unit that can measure the temperature of the refrigerant in the system inlet and outlet.
10. Fan coil control electrical principle hanging box: 495MM * 496MM iron panel, color spray painted. Spray painted wiring diagram of the electrical principle of the air conditioner, detailing the control principle, sensor distribution, and protection system of the air conditioner
11. Wall mounted control unit hanging box: Aluminum alloy hanging box size: 505MM * 496MM iron panel, color spray painted. Spray painting includes the principle of system capacity setting, fault principle electrical wiring diagram, and fault code table. The fault location can be determined by analyzing the handheld device The power supply can independently turn on and off a single system, and is equipped with a temperature measurement unit that can measure the temperature of the refrigerant in the system inlet and outlet.
12. Wall mounted control electrical principle hanging box: 495MM * 496MM iron panel, color spray painted. Spray painted wiring diagram of the electrical principle of the air conditioner, detailing the control principle, sensor distribution, and protection system of the air conditioner And the difference between wall mounted air conditioners and other units.
13. Courtyard style control unit hanging box: Aluminum alloy hanging box size: 505MM * 496MM iron panel, color spray painted. Spray painting includes the principle of system capacity setting, fault principle electrical wiring diagram, and fault code table. The fault location can be determined by analyzing the handheld device The power supply can independently turn on and off a single system, and is equipped with a temperature measurement unit that can measure the temperature of the refrigerant in the system inlet and outlet.
14. Courtyard style control electrical principle hanging box: 495MM * 496MM iron panel, color spray painted. Spray painted wiring diagram of the electrical principle of the air conditioner, detailing the control principle, sensor distribution, and protection system of the air conditioner And the difference between courtyard air conditioning and other units.
4、 Intelligent testing/control device
1. Central air conditioning testing program: Due to the complexity of the project and the dispersion of equipment, some central air conditioning units have been installed on flower boards for testing programs. Once a fault occurs, the workload is quite large. In order to quickly and accurately determine whether the fault is caused by the main unit or the indoor unit, each manufacturer has developed a central air conditioning testing program based on production and maintenance needs. It can test the operating frequency of the compressor, various data from sensors, the working steps of electronic expansion valves, and dozens of other working data and states of central air conditioning. The software can control the internal units and set the status of 1-64 internal units. It is the university that provides excellent learning equipment for research.
2. Central air conditioning testing and maintenance control program software; It can accurately and quickly determine which unit the fault occurred in, and the software displays more than 100 online data and operating status of the air conditioner. Different models have different interfaces, including 1-to-16 (EVI), 1-to-32, digital modular 1-to-64, frequency conversion modular 1-to-64, thermal recovery, single unit DC frequency conversion, single unit AC frequency conversion, intelligent frequency conversion, single unit 420, single unit 900, modular air-cooled screw, and all other central air conditioning units.
3. Monitoring and maintenance software: The software is equipped with a central air conditioning and air conditioning host system conversion. The software can select the model to be monitored manually or automatically
4. Display interface: After the parameter settings are correct, the unit can be monitored. The software will parse, display, and store the data. The software has two main display interfaces: text display interface and curve display interface
5. Text display interface: It can test the operating frequency of the compressor, various data from sensors, the working steps of the electronic expansion valve, and dozens of other working data and states of central air conditioning,
6. 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" section on the right side of the interface, display information such as which type of data frame has been received, the address of the received data frame, the current online controller, internal and external machine addresses, and the current time.
7. Curve display interface: capable of displaying system temperature, pressure, current, voltage, and curves
8. Remote control of internal units: The software can control the internal units and set the status of 1-64 units.
5、 The product configuration is as follows

name	unit	quantity	Specifications
aluminum alloy bracket	set	3
perforated plate	set	4	1.5MM
Host external machine	set	1	optional
Wall mounted/hanging box electrical module	set	1	aluminum alloy material
Wall mounted/hanging box principle module	set	1	aluminum alloy material
Electrical module of hanging box for courtyard machine	set	1	aluminum alloy material
Principle module of hanging box for courtyard machine	set	1	aluminum alloy material
Electrical module for hanging box of air duct fan	set	1	aluminum alloy material
Principle module of air duct hanging box	set	1	aluminum alloy material
Host hanging box electrical module	set	1	aluminum alloy material
Host hanging box electrical module	set	2	aluminum alloy material
Assessment system hanging box principle module	set	1	aluminum alloy material
Refrigeration system splitter	set	4
Intelligent temperature control system	set	2
remote control	set	1
3.5 Pressure gauge	set	6
ammeter	set	1
Return air temperature display	set	3
Inlet temperature display	set	3
Ducted Air Conditioner	set	1	genuine
Tianjin Machine	set	1	genuine
Wall-mounted unit	set	1	genuine
3/8 connected copper pipe (detachable)	set	1
1/4 connection copper tube (detachable)	set	1
vacuum pump	set	1
Add liquid tube	set	1
Double gauge repair valve	set	1
Wrench 300MM	turn	2
410 dedicated	set	1

6、 Training Program
Junior worker
1. Basic knowledge of electrical control principles for outdoor units
2. Basic knowledge of electrical control principles for indoor units (three indoor units)
3. Installation and understanding of embedded indoor units
4. Installation and Understanding of Tianjin Machine
5. Wall mounted/single-sided air outlet installation and understanding
6. Principle analysis and pipeline layout of household central air conditioning heat pump
7. Analysis of the refrigeration principle of household central air conditioning and pipeline layout
8 Central air conditioning refrigeration/heat pump operating conditions
9. Installation and maintenance of household central air conditioning units
Intermediate Worker
1. Understand digital energy-saving control technology
2. Control of electronic expansion valve
3. Use of maintenance software
4. System fault simulation settings
5. Communication between computer host and indoor unit
6. Display of air conditioning fault codes
7. High voltage protection fault handling and code display
8. Handling and code display of high-voltage protection faults in external sensors
9. Low voltage protection fault handling and code display
10. Handling of main communication faults and code display
11. Fault handling and code display of external machine pipeline protection
12. Four way valve malfunction