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

Release time：2024-06-17 08:30viewed：times

1. Product Overview
The product design process refers to the relevant requirements of the technical documents of the " Refrigeration and Air Conditioning" skill competition and the national occupational skill standards for "Refrigeration Equipment M*ntenance Workers". It highlights the technical skills tr*ning content such as "installation", "debugging", "m*ntenance", "design" and "management" to cultivate professional and technical personnel in refrigeration and *r conditioning.
The equipment can carry out skill tr*ning such as installation, commissioning, operation, inspection and m*ntenance of refrigeration equipment. At the same time, the equipment follows the principle of combining tr*ning, appr*sal and competition. It is suitable for teaching tr*ning, practical assessment and skill appr*sal of various vocational schools, technical schools, technical secondary schools, labor tr*ning and skill appr*sal units. It can also be used as a typical carrier of the integrated skill competition of refrigeration and *r conditioning majors. Applicable to refrigeration and *r conditioning technology vocational skills competition.
2. Equipment function and structure
The equipment adopts a modular design and a combined application design concept. It is an open tr*ning platform composed of a workbench assembly, a refrigerator in a cold storage room, a cold water tank, a hot water tank, a radiator, a fan coil, a power box, a tr*ning electric control box, refrigeration components, etc. The structure and components of each part of the equipment are introduced as follows:
Workbench assembly: A workbench composed of profile table legs, table top, side wood board, mesh baffle, and universal wheel. Tr*nees can freely install refrigeration components on it. Universal wheels with brakes are used to facilitate the adjustment of the placement of the equipment.
Refrigerator: The frame is made of high-quality st*nless steel plate, which is machined and formed, and the interlayer is insulated with polyurethane foam. Install a light tube evaporator. The middle part of the warehouse door is constructed with three layers of heating transparent glass, which not only meets the insulation performance requirements, but also facilitates internal viewing. The warehouse body is connected around with movable connections to facilitate the adjustment of the placement of the equipment. 75L volume.
Cold water tank: Made of st*nless steel. The box body is wrapped with insulation cotton around to prevent leakage and rust, and the peripheral flange forms a humanized design of arc bottom to prevent scratches on the hands. 15L volume. It consists of a cold water tank, a support pipe seat, a coil made by the contestants, and other installation accessories, which can exchange heat between refrigerant and water.
Hot water tank: Made of st*nless steel, leakproof and rustproof, with a humanized design of arc bottom to prevent scratches on the periphery. 20L volume. It consists of a hot water tank, a support pipe seat, a coil made by the contestant, and other installation accessories, which can exchange heat between refrigerant and water.
Radiator: Adopt mature brand products on the market, made of low-carbon cold-rolled steel and then sprayed. Center distance 300mm, 5 pieces, 4 inlets and outlets.
Fan coil: Adopt mature brand products on the market, outlet size: 447*130mm, evaporator size: 400*200*65mm, water volume: 319KG/H.
Power box: The module is m*nly composed of an electrical control box, a leakage circuit breaker, an emergency stop switch, a signal indicator, an intermediate relay, a fuse holder, a fuse, an aviation socket, a nylon waterproof connector, a power supply 2.3 plug, a power supply 3 plug, and other installation accessories.
Tr*ning electric control box: This module is m*nly composed of electrical control box, temperature display area, instrument display area, operation control area, emergency stop switch, normally closed contact group, two-position knob switch, normally open contact group, signal indicator light, fuse holder, fuse, nylon waterproof joint, electronic thermostat, flat lock, power plug, other installation accessories, etc. The
circuit is neat and scientific. The internal wiring is unified with the wiring diagram, and the line number is clearly marked. The connection between the distribution box and the cabinet and the unit is clearly marked, intuitive and easy to use.
The electric box can be installed and fixed according to actual needs, which is flexible and practical. The switchable door lock is convenient for students to carry out installation and fault detection and other practical operations, and it is convenient to disassemble and install, which is conducive to modularization and convenient disassembly and assembly.
Refrigeration components: It is m*nly composed of condensing units, high and low pressure switches, internal balanced expansion valves, check valves, solenoid valves, dry filters, liquid sight glasses, crankcase pressure regulating valves and energy regulating valves to form complete refrigeration components.
To meet the requirements of (practical tr*ning), tr*nees can freely install refrigeration components, hand valves, solenoid valves, junction boxes, meter groups and other accessories on it (large items have been fixed in advance, such as condensing units, electrical control boxes, etc.), and the system pipelines can be built by the tr*nees themselves, or they can refer to the renderings in the instructions for assembly.
Assembly table: The assembly table consists of two parts: the table frame and the table top. The table frame is bent and welded with high-quality cold-rolled steel plates, assembled and connected after spraying, with a preset power socket expansion hole. Power sockets can be added according to the purpose. A 2-layer tool cabinet is configured with electrostatic spraying on the surface, which can store tools and is placed on one side of the bottom of the assembly table. The table top is made of high-density medium-density fiberboard, with a fireproof board pressed on the surface, which is corrosion-resistant and anti-static. It can be disassembled and assembled at will, and is convenient for transportation and installation.
MCU , 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 3D machine tool model can be operated through the start/stop, forward motion, and reverse motion buttons. When the line is connected, the 3D 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 3D machine tool model. You can choose to cover the lid. Some component names can be renamed. Then click the connection line button to connect the terminals to 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, and the scene can be reset at any time.
2. PLC control: The experiment is the same as relay control, with the addition of PLC control function. After the connection is completed, enter the program writing interface through the PLC coding button, write two programs, forward and reverse, with a total of 12 ladder diagram symbols. After writing, select Submit to verify the program. After successful verification, turn on the power to operate. Errors in components, line connections, and code will pop up prompt error boxes, and the scene can be reset at any time.
3. MCU control: The experiment is the same as relay control, with the addition of MCU control function. After the connection is completed, enter the programming interface through the C coding button, enter the correct C language code, and submit after successful verification, turn on the power to operate. Errors in components, line connections, and code will pop up prompt error boxes, and the scene can be reset at any time.
III. Overview of technical parameters
1. Working power supply: single-phase three-wire 220V±10% 50Hz
2. Safety protection: equipment leakage overload protection, compressor overload and start-up protection, pressure protection
3. Condensing unit: Tecumseh / CAJ4492YHR
4. Thermostat: Jingchuang / STC-9100; Jingchuang / STC-200
5. Thermal expansion valve: Danfoss T2
6. Energy regulating valve: Danfoss KVC12 1/2" screw
7. Crankcase pressure regulating valve: Danfoss KVL12 1/2" screw
8. Fan coil: rated *r volume 340M3/H, rated cooling capacity 1.8KW, input power 37W
9. Radiator: heat dissipation area 2.5㎡ heat dissipation 65W
10. Rated power: ≤1.4KW
11. Cooling capacity: 1.2KW～3.9KW (-15℃～+25℃)
12. Refrigerant: R134a
13. Refrigerant charge: 1.6kg±10%
14. Refrigerator compartment refrigerator: 75L
15. Cold water tank: 14L
16. Hot water tank: 20L
17. Working environment: temperature 0℃~35℃, relative humidity 0 ≤85%
18. Equipment assembly dimensions: L1800mm*W900mm*H1900mm
19. Equipment weight: 150Kg

IV. Equipment features
Openness: All refrigeration equipment and electrical control devices adopt open structure. Tr*nees can carry out installation and adjustment tr*ning of refrigeration system and electrical system according to different technical requirements in open occasions. Comprehensiveness
: It can tr*n tr*nees in comprehensive skills such as installation, process, commissioning, operation, inspection and m*ntenance of refrigeration. The modularly designed equipment consists of refrigeration system and electrical control system to form a refrigeration system device that can be integrated together, and can also form a sub-module for independent tr*ning, which meets the design requirements of typical carriers for diversified teaching.
Authenticity: The equipment uses matching refrigeration devices and real refrigeration industrial products to fully achieve the refrigeration effect required by industry.
Environmental protection: The equipment uses R134a refrigerant, the filling and recovery of which meets environmental protection requirements, and tests tr*nees' operating skills and environmental protection concepts.
5. Equipment Configuration List

Serial number	Configuration Name	Specifications	brand	unit	quantity	Remark
1	Workbench assembly			set	1
2	Freezer			open	1
3	Cold water tank			set	1
4	Hot water tank			set	1
5	Radiator			set	1
6	Fan Coil Unit			set	1
7	power box			set	1
8	Tr*ning electric control box			set	1
9	Refrigeration components			set	1
10	Assembly table			set	1

6. Det*led parameters of equipment configuration

Serial number	Device Name	specification	Remark
1	Workbench assembly	Size: L1800mmW900mm H1900mmThe workbench is composed of profile table legs, table top, side wood board, mesh baffle and universal wheels. Tr*nees can freely install refrigeration components on it. Universal wheels with brakes are used to facilitate the adjustment of the placement of equipment.
2	Freezer	Size: L680 mmW660 mmH400mm. Made of high-quality st*nless steel plate as the frame, it is machined and formed, and the interlayer is insulated with polyurethane foam. Installed with light tube evaporator. The middle part of the door is constructed with three layers of heating transparent glass, which not only meets the requirements of thermal insulation performance, but also facilitates internal inspection. There is an LED light on the top, and the surrounding of the warehouse is connected flexibly to facilitate the adjustment of the equipment placement. 75L volume.
3	Cold water tank	Size: L440mm358mm161mm Made of st*nless steel. The box is wrapped with insulation cotton all around to prevent leakage and rust, and the peripheral edges are rounded to form a humanized design to prevent scratches on the bottom. 15L volume. It consists of a cold water tank, a support pipe seat, a coil made by the contestant, and other installation accessories, which can exchange heat between refrigerant and water.
4	Hot water tank	Size: L440mmW358mmH200mm Made of st*nless steel, leakproof and rustproof, with a humanized design of arc bottom to prevent scratches on hands. 20L volume. It consists of a hot water tank, a support pipe seat, a coil made by the contestant, and other installation accessories, and can exchange heat between refrigerant and water.
5	Radiator	Size: L540mmW100mmH370mm. Made of mature brand products on the market, made of low-carbon cold-rolled steel and then sprayed. Center distance 300mm, 5 pieces, 4 inlet and outlet.
6	Fan Coil Unit	Size: L755mmW470mmH245mm. It adopts mature brand products on the market. Air outlet size: 447130mm. Evaporator size: 400200*65mm. Water volume: 319KG/H.
7	power box	Size: L700mmW619.3mmH150mm. The module is m*nly composed of electrical control box, leakage circuit breaker, emergency stop switch, signal indicator light, intermediate relay, fuse holder, fuse, aviation socket, nylon waterproof connector, power 2.3 plug, power 3 plug and other installation accessories.
8	Tr*ning electric control box	Size: L400mmW500mmH201mm. The module is m*nly composed of electrical control box, temperature display area, instrument display area, operation control area, emergency stop switch, normally closed contact group, two-position knob switch, normally open contact group, signal indicator light, fuse holder, fuse, nylon waterproof joint, electronic thermostat, flat lock, power plug and other installation accessories.
9	Refrigeration components	The complete refrigeration components are mnly composed of condensing unit, high and low pressure switches, internal balanced expansion valve, non-return valve, solenoid valve, dry filter, liquid sight glass, crankcase pressure regulating valve and energy regulating valve. 1. Condensing unit: 1) Brand: Tecumseh 2) Model: CAJ4492YHR 3) Dimensions: L490mmW430mm*H340mm 4) Voltage: 220V 5) Frequency: 50Hz 6) Refrigerant: R134a 7) Input power: 1008W 8) Rated current: 6.3A 9) Cooling capacity: 2134W 10) Evaporating temperature: +15℃~-20℃ 11) COP:2.1 12) Nominal operating conditions: high temperature type 2. Thermostatic expansion valve: Danfoss T2 3. Balancing expansion valve: Danfoss TE2 4. Solenoid valve: 3/8" screw DC220V 5. Crankcase pressure regulating valve: Danfoss KVL12 1/2" screw 6. Energy regulating valve: Danfoss KVC12 1/2" Screw mouth
10	Assembly table	Size: L1500mm×W700mm×H780mm It consists of a table body, a tool cabinet, and a table top. It is used as an assembly platform for electrical and mechanical structures. The table body is made of cold-rolled steel plates by bending and welding, and assembled and connected after spraying. The assembly table has a preset power socket expansion hole, and power sockets can be added according to the purpose. The entire assembly table can be disassembled and assembled at will, which is convenient for transportation and installation. The tool cabinet is made of cold-rolled steel plates by bending and welding.

7. Consumables Accessories Package 1

Serial number	Configuration Name	Specifications	brand	unit	quantity	Remark
1	utility vehicle	Item No.: 74306-8-23		shelf	1
2	Power strip	B5030		indivual	1
4	Bench vise	83-067-2-23C		indivual	1
5	Vacuum Pump			tower	1
6	Pipe cutter	VTC-32		indivual	1
7	Expander	VFT-808-IN		set	1
8	Double meter valve	V		set	1
9	Pipe bender 1	number 6		Bundle	1
10	Pipe Bender 2	No. 10		Bundle	1
11	Pipe Bender 3	12th		Bundle	1
12	Hand drill	Charge		set	1
13	Drill Bit Box	6.3.2.10		set	1
14	Clamp Meter	100A		indivual	1
15	Wire Stripper	8		Bundle	1

8. Consumables Accessories Package 2

Serial number	Configuration Name	Specifications	brand	unit	quantity	Remark
1	Logistics box with cover	A9# box 540420370mm blue + flat cover		set	1
2	Condensing unit	CAJ4492YHR	Tecumseh	tower	1
3	Filter drier	023Z5036	Danfoss	indivual	1
4	Sight glass	014-0162	Danfoss	indivual	1
5	Internal balanced expansion valve	TN2/134-0	Danfoss	indivual	1
6	The electromagnetic valve	EVR3 (Article No. 032F8116)	Danfoss	indivual	3
7	Hand valve 3/8	009G0127	Danfoss	indivual	2
8	Hand valve 1/2	009G0101	Danfoss	indivual	2
9	Check valve	NRV10 (Article No. 020-1041)	Danfoss	indivual	1
10	Energy regulating valve	KVC12 (Article No. 034L0141)	Danfoss	indivual	1
11	Crankcase pressure regulating valve	KVL12 (Article No. 034L0041)	Danfoss	indivual	1
12	High and low pressure switches	060-1264	Danfoss	indivual	1
13	Condensing pressure switch	KP1	Danfoss	indivual	1
14	High pressure gauge	R134a(4503708)	REFCO	indivual	Each 1
15	Capillary group				2

IX. System Parts Package Table 3

Serial number	Configuration Name	Specifications	brand	unit	quantity	Remark

1	Parts Box	STST14022-23	STANLEY	indivual	1
2	Copper pipe threaded tee	(1/4" T-thread)		indivual	5
3	Copper pipe threaded tee	(3/8" T-screw)		indivual	10
4	Copper pipe threaded tee	(1/2" T-screw)		indivual	5
5	Copper sodium nut	(1/4")		indivual	20+4
6	Copper sodium nut	(3/8")		indivual	20+10
7	Copper sodium nut	(1/2")			10+10
8	Copper reducer	Internal thread 1/2"-1/4" external thread		indivual	5
9	Copper reducer	Internal thread 3/8"-1/4" external thread		indivual	8
10	Copper reducer	Internal thread 1/2"-3/8" external thread		indivual	4
11	Single connector	1/4 with bonnet, valve core, without copper tube	Youtongxuan	indivual	2
12	St*nless steel clamp	￠6 304 st*nless steel with rubber strip		indivual	20
13	St*nless steel clamp	￠10 304 st*nless steel with rubber strip		indivual	20
14	St*nless steel clamp	￠12 304 st*nless steel with rubber strip		indivual	20
15	St*nless steel clamp	C￠25 304 st*nless steel with rubber strip		indivual	4
16	Filter holder	Φ35-Φ45		indivual	1

10. Electrical accessories package table 4

Serial number	Configuration Name	Specifications	brand	unit	quantity	Remark
1	Parts Box	STST14022-23	STANLEY	indivual	1
4	Fork type terminal block	SV1.25-4 Blue		indivual	100
7	European terminal	E1008 (red)		indivual	100
8	Industrial plug	16A		indivual	1
9	Self-tapping screws	4.2*20		Particles	100
10	Self-tapping screws	4.2*30		Particles	100
11	Self-tapping screws	4.2*50		Particles	100
12	Self-tapping screws	4.2*60		Particles	100
13	Cross recessed round head screw with washer	M4*10		indivual	10
14	Grade A flat washers	4.390.8mm		indivual	10
15	Light spring washers	Ф4.1mm		indivual	10
18	Light spring washers	Ф8.1mm		indivual	4
19	Grade A flat washers	8.4161.6mm		indivual	4
20	Rubber hole plug	6MM		indivual	50
twenty one	Cable Ties			1	100
twenty two	86 bottom box				2
twenty three	Electrical tape	1500/Black		roll	1

11. Consumables Accessories Package (Table 5)

Serial number	Configuration Name	Specifications	brand	unit	quantity	Remark
1	Copper Tube	Φ12.7*0.8mm		rice	6
2	Copper Tube	Φ9.52*0.8mm		rice	30
3	Hard pipe	Φ6.35*0.7mm		rice	15
4	refrigerant	R134a 5Kg		bottle	1
5	Reticulated water pipe	20mm, 4 points	（	rice	10
6	20 pipe clamps			indivual	10
7	Ground	Yellow-green		rice	5
8	Sheathed cable	RVV 3*0.5mm2		rice	50
9	Insulation Pipe	Φ6		strip	1
10	Insulation Pipe	Φ10		strip	2
11	Insulation Pipe	Φ12		strip	5
12	Insulation Pipe	Ф20		strip	2
13	Thermal insulation cable ties	1500*50		roll	1

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