DYJYD-02F Modern Refrigeration and Air Conditioning System Skills Training Platform

Release time：2024-06-17 10:00viewed：times

1. Product Overview
This product includes technologies such as refrigeration , thermodynamics, heat transfer and electrical control, and is m*nly composed of two parts: heat pump type household *r conditioning system and *r source heat pump system. The condenser, evaporator, throttling device, compressor, control circuit, etc. are installed on the aluminum alloy r*l tr*ning table to form a typical refrigeration device. The electrical control adopts a hanging box type, which can assemble, debug and operate the refrigeration system, and truly present the working process of the refrigeration device. Through the installation, pressure m*ntenance, leak detection, vacuuming, electrical wiring, fluorination, system debugging and working condition adjustment of the refrigeration system, the students' modern refrigeration and *r conditioning system equipment installation, debugging and m*ntenance skills tr*ning are completed.
According to the project teaching, the following typical work tasks can be completed:
Task 1: Heat pump type
household *r conditioning system Includes: positioning installation, pressure m*ntenance, leak detection, vacuuming, electrical wiring, fluorination, system debugging and working condition adjustment of heat pump type household *r conditioning system.
Task 2: Air source heat pump system
Includes: positioning installation, pressure m*ntenance, leak detection, vacuuming, electrical wiring, fluorination, system debugging and working condition adjustment of *r source heat pump system.
2. Technical parameters
1. Input power: single-phase AC 220V±10% 50Hz
2. Working environment: temperature -10℃～+40℃ relative humidity <85% (25℃) altitude <4000m
3. Device capacity: <2kW
4. Refrigerant: R22
5. Dimensions: 160cm×80cm×155cm
6. Safety protection: with leakage voltage and leakage current protection devices, safety meets national standards
3. Related knowledge and skills
1. Refrigeration system composition and connection
2. Control system and application
3. Refrigeration principle and performance adjustment
4. Refrigeration thermodynamics and heat transfer
5. Installation, connection, fault diagnosis and debugging
4. System composition
1. Heat pump type household *r conditioning
system The system is m*nly composed of two parts: refrigeration and electrical. The refrigeration part adopts an open structure, showing the components of the real refrigeration system on the tr*ning table. The components are connected by detachable connectors; and are equipped with corresponding pressure, temperature sensors and instrument indications; the electrical part adopts a universal control circuit board, which covers most of the *r conditioning control circuits, including power conversion circuits, infrared receiving circuits, temperature acquisition circuits, output drive circuits, etc.
Single-chip microcomputer , PLC programmable design and control virtual simulation software:
This software is developed based on unity3d, with built-in experimental steps, experimental instructions, circuit diagrams, component lists, connection lines, power on, circuit diagrams, scene reset, return and other buttons. After the connection and code are correct, the three-dimensional machine tool model can be operated through the start/stop, forward motion, and reverse motion buttons. When the line is connected, the three-dimensional machine tool model can be enlarged/reduced and translated.
1. Relay control: Read the experimental instructions and enter the experiment. By reading the circuit diagram, select relays, thermal relays, switches and other components in the component list and drag and drop them into the electrical cabinet. The limiter is placed on the three-dimensional machine tool model. You can choose to cover the cover. Some component names can be renamed. Then click the connect line button to connect the terminals. After the machine tool circuit is successfully connected, choose to turn on the power and operate. If the component or line connection is wrong, an error box will pop up. The scene can be reset at any time.
2. PLC control: The experiment is the same as relay control, and the PLC control function is added. After the connection is completed, enter the program writing interface through the PLC coding button. Write two forward and reverse programs. There are 12 ladder diagram symbols in total. After writing, select Submit for program verification. After successful verification, turn on the power to operate. If there are component, line connection, and code errors, an error box will pop up. The scene can be reset at any time.
3. Single-chip microcomputer control: The experiment is the same as the relay control, with the single-chip microcomputer control function added. After the connection is completed, enter the programming interface through the C coding button, enter the correct C language code, submit the verification successfully, turn on the power to operate, and the component, line connection, and code errors will pop up an error box, and the scene can be reset at any time.
The specific configuration is as follows:

Serial number	Name	Specification	quantity	Remark
1	Power supply instruments, component modules	1 single-phase power m*n switch (with leakage and short-circuit protection), 1 pointer-type AC voltmeter (0-250V), 1 pointer-type AC ammeter (0-15A), 1 AC contactor, 2 1μF/500V capacitors, 1 12.5μF/500V capacitor, 2 terminal blocks, 1 pressure controller, 1 green button switch	1 block
2	Heat pump *r conditioning electrical module	1 universal heat pump r conditioner mnboard, 1 schematic diagram, 15 test points, 1 fuse holder, 7 corresponding indicator lights, 2 terminal blocks	1 item
3	General *r conditioning panel	Dual sensor	1 set
4	compressor	Working voltage: AC220V, cooling capacity: 1745W, input power: 585W	1
5	Finned evaporator	FN-2	1
6	Finned condenser	FN-4.4	1
7	Solenoid four-way valve	DSF-4	1
8	Throttling device		1 set
9	Check valve		1 set
10	Air conditioning filter		2 sets
11	Three-color double-English liquid adding tube	CT-336 (threaded ejector)	1 set
12	Male/Inch elbow adapter	Foreign English and Internal Public	3
13	Rotary fan motor	Leaf 300mm	2
14	Standard *r conditioning valve	1/4	1
15	Standard *r conditioning valve	3/8	1

2. Air source heat pump system
The system is m*nly composed of four parts, namely compressor, immersed condenser, throttling device, and *r-cooled evaporator. The compressor drives the refrigerant in the pipeline to circulate, evaporate and condense continuously, absorb heat through the temperature difference of the refrigerant and compress and heat the compressor , and continuously gather the external heat to the immersed condenser on the heat pump host, so that the water temperature in the water tank rises rapidly. The various components of the system are connected by detachable connectors; the system can be assembled, debugged, operated, and adjusted in working conditions. The use of plexiglass water tanks can directly reflect the effect. The specific configuration is as follows:

Serial number	Name	Specification	quantity	Remark
1	Air source heat pump water heater electrical module	1 *r source heat pump water heater motherboard (inside the chassis), 1 schematic diagram, 11 test points, 1 fuse holder, 2 terminal blocks	1 block
2	Temperature gauge, contactor module	4 temperature measuring meters, 1 AC contactor, 2 terminal blocks	1 block
3	Air source heat pump electrical control panel		1 set
4	compressor	Working voltage: AC220V, cooling capacity: 1745W, input power: 585W	1
5	Finned evaporator	FN-4.4	1
6	Solenoid four-way valve	DSF-4	1
7	Check valve		1 set
8	Filter drier		2 sets
9	Immersed Condenser		1 set
10	Organic glass water tank		1 set
11	Rotary fan motor	Leaf 300mm	1

3. Tr*ning table

The tr*ning table is made of industrial standard aluminum profiles and sheet metal components. It has a solid structure and beautiful appearance. It is equipped with two large drawers for placing tr*ning wires or tools. The tr*ning table is used to place components of heat pump household *r conditioners and *r source heat pump systems and provides a spacious and comfortable work surface. Students can install refrigeration system components on the work surface. The tr*ning table is also equipped with four universal wheels for easy movement and fixing, which is conducive to the layout of the tr*ning room.
V. Tool Configuration List

Serial number	name	Specification	quantity	Remark
1	Portable welding torch	2L portable welding torch	1 set	One for the whole room
2	Single-stage rotary vane vacuum pump	TW-1A	1 set	One for the whole room
3	Expander	CT-2000	1
4	Cutter	CT-274	1
5	Double meter valve	CT-536GF/S	1 set
6	Three-color double-English liquid adding tube	CT-336 (threaded ejector)	1 set
7	Male/Inch elbow adapter	Foreign English and Internal Public	3
8	Active sheet metal	0～250mm	1
9	Active sheet metal	0～300mm	1
10	Hexagon socket wrench	φ6	1
11	Refrigerant cylinder	3kg	1	One for the whole room

Previous：DYLR-XZL New Multifunctional Refrigeration Technology Comprehensive Assessment and Training Platform

Next：DYLR-2017J Intelligent Refrigeration Compressor Performance Test Training Platform