I. Product overview
This device is a training device specially developed for refrigeration related majors in vocational colleges. According to the characteristics of air conditioning and refrigerator maintenance technology in the refrigeration industry, it is designed for the electrical control of air conditioners and refrigerators and the installation and maintenance of refrigeration systems. Students have comprehensive professional abilities in the installation of air-conditioning refrigerator system pipelines, electrical wiring, working condition debugging, fault diagnosis and maintenance. The device integrates technologies such as fluid mechanics, thermodynamics, heat transfer and electrical control, and is suitable for teaching and training related to refrigeration.
The system consists of two parts: split heat pump air conditioners and direct cooling refrigerators. The split air conditioners perform the functions of cooling in summer and heating in winter, and the direct cooling refrigerators perform the functions of refrigerator refrigeration and freezing. It covers the installation, wiring, pressure holding, vacuuming, refrigerant charging and operation debugging involved in the refrigeration profession. Through the use, training and training of the device, the actual hands-on operation ability of the operator can be fully exercised, and the ability to analyze and deal with problems in actual maintenance.
II. Product features
1. The device is based on the integration of refrigeration and air conditioning system installation, refrigerator system installation, refrigeration system electrical wiring, pressure leak detection, vacuuming, refrigerant charging, and operation debugging. It includes all steps of refrigeration system maintenance and can meet practical training and teaching. , The needs of actual engineering training and vocational skill competition.
2. The device adopts a modular design, the electrical control and the refrigeration system are separated independently, and the electrical part is equipped with test terminals and various output connection terminals, which can be used for independent wiring, testing, operation and other operations.
3. The training platform visually demonstrates the system structure and working principle of air conditioners and refrigerators. The structure and main components of the refrigeration system can be clearly seen. The system is also equipped with digital display AC voltmeter, digital display AC ammeter, shock-resistant pressure gauge, signal indicator, etc., so that the real-time working status of the entire air conditioning system and refrigerator system can be seen at a glance .
4. The installation takes project teaching and task guidance as practical training teaching, and is guided by the work process to increase students' interest in practical training courses.

III. Technical performance
1. Input power: single-phase AC220V±10% 50Hz
2. Working environment: temperature -10℃～40℃ relative humidity ≤85% (25℃) altitude <4000m
3. Device capacity: ≤1.5kVA
4. Air conditioning system compressor: input power 585W
5. Refrigerator system compressor: input power 65W
6. Refrigerant type: air conditioning system R22, refrigerator system R600a
7. Dimensions: 1500×800×1250 mm
8. Safety protection: with leakage voltage and leakage current protection, in line with national safety standards
IV. Equipment composition
From the structure can be divided into three parts: training platform, refrigeration system part and electrical control part.
1. Training platform
Take the profile as the main frame, and the sheet metal board as the auxiliary material, build a 150cm×80cm, which is composed of 10 20mm×80mm profiles. There are two drawers underneath, which are used to place training modules. Below the drawer is a storage cabinet where you can put some special tools and refrigerant cylinders. The foot uses 4 small universal wheels with brakes to facilitate the movement of the equipment.
2. Refrigeration system part
The system is mainly divided into two major subsystems: heat pump type air conditioning system and direct cooling type refrigerator system; both are composed of compressor, evaporator, condenser, throttling device and auxiliary devices; adopt detachable (assembled) structure, through The pipe threaded connection method connects the components in a loop to finally form a complete refrigeration system.
3. Electrical control part
It adopts modular structure and is divided into power supply and instrument module hanging box, air conditioner electrical control module hanging box, refrigerator electronic temperature control electrical control module hanging box, refrigerator intelligent temperature control electrical control module hanging box according to different functions. At the same time, there is a wiring area on the training platform, which serves as the connection transition area between the electrical training unit box and the controlled component. A covered terminal block is used in the wiring area to improve the operating safety factor.