Refrigeration air conditioner skill training device

Abstract

A refrigeration air conditioner skill training device comprises a compressor, a refrigeration mechanism connected with the compressor through a first pipeline, a liquid storage device connected with the refrigeration mechanism, a heat exchange mechanism connected with the liquid storage device through a second pipeline, and a gas-liquid separator connected with the heat exchange mechanism through a third pipeline. The refrigerating mechanism comprises a first refrigerating mechanism and a second refrigerating mechanism which are different in working mode, the heat exchange mechanism comprises a first heat exchange mechanism and a second heat exchange mechanism which are different in working mode, and the first refrigerating mechanism comprises a first electromagnetic valve communicated with the first pipeline, a water inlet of the hot water tank communicated with the first electromagnetic valve and a first check valve communicated with a water outlet of the hot water tank. The first check valve is communicated with the liquid storage device through a first branch pipe. The refrigeration air conditioner skill training device provided by the utility model adopts an open structure, is visual in appearance, has multiple working modes, is convenient to demonstrate different refrigeration or heating effects, and is suitable for skill training.

Description

Technical Field

[0001] The utility model belongs to the technical field of training equipment, and specifically relates to a refrigeration and air-conditioning skill training device. Background Art

[0002] At present, refrigeration and air-conditioning equipment is widely used in my country, so a lot of installation, commissioning and maintenance personnel are needed. In view of this situation, more and more vocational colleges and training institutions have opened refrigeration and air-conditioning majors. Therefore, educational and training institutions are eager to launch corresponding practical training equipment to train students' theoretical knowledge, improve hands-on operation ability and maintenance operation skills.

[0003] There are many types of refrigeration and air-conditioning equipment on the market, but the products are usually one-piece designs, the outer shell is difficult to disassemble and assemble, which is not conducive to displaying the internal structure, causing great inconvenience to the skill training of related professions and difficult to use directly for practical training. In addition, the aforementioned equipment is mostly designed and produced for practical applications, the equipment functions are relatively simple, not targeted at vocational training, with fewer working modes, lack of variability and expansibility, and difficult to use for skill learning and training of related professions. Therefore, a refrigeration and air-conditioning related training device with multiple working modes is needed, and the utility model solves this technical problem. Utility Model Content

[0004] The utility model provides a refrigeration and air-conditioning skill training device, which adopts an open structure, has an intuitive appearance, and has multiple working modes, is convenient for demonstrating different refrigeration or heating effects, and is suitable for skill training.

[0005] A refrigeration and air-conditioning skills training device comprises a compressor, a refrigeration mechanism connected to the compressor via a first pipeline, a liquid storage device connected to the refrigeration mechanism, a heat exchange mechanism connected to the liquid storage device via a second pipeline, and a gas-liquid separator connected to the heat exchange mechanism via a third pipeline, wherein the gas-liquid separator is connected to the compressor, the refrigeration mechanism comprises a refrigeration mechanism 1 and a refrigeration mechanism 2 with different working modes, and the heat exchange mechanism comprises a heat exchange mechanism 1 and a heat exchange mechanism 2 with different working modes.

[0006] Furthermore, the refrigeration mechanism 1 includes a solenoid valve 1 connected to the first pipeline, a water inlet of the hot water tank connected to the solenoid valve 1, and a check valve 1 connected to the water outlet of the hot water tank, and the check valve 1 is connected to the liquid reservoir through a first branch pipe.

[0007] Furthermore, the second refrigeration mechanism includes a second solenoid valve connected to the first pipeline, a condenser connected to the second solenoid valve, and a second check valve connected to the condenser. The second check valve is connected to the liquid reservoir through a second branch pipe.

[0008] Furthermore, the heat exchange mechanism one includes an electromagnetic valve three connected to the second pipeline, an electronic expansion valve one connected to the electromagnetic valve three, a heat exchanger connected to the electronic expansion valve one, and a check valve three connected to the heat exchanger, and the check valve three is connected to the third pipeline through a third branch pipe.

[0009] Furthermore, the heat exchange mechanism 2 includes a solenoid valve 4 connected to the second pipeline, an electronic expansion valve 2 connected to the solenoid valve 4, an evaporator connected to the electronic expansion valve 2, and a check valve 4 connected to the evaporator, and the check valve 4 is connected to the third pipeline through a fourth branch pipe.

[0010] Furthermore, the heat exchanger is connected to a circulation pipe, a circulation pump is connected to the circulation pipe, and the circulation pipe is connected to a fan coil unit.

[0011] Furthermore, a compressor exhaust pressure gauge is connected to the first pipeline.

[0012] Furthermore, the second pipeline is connected with a drying filter, a sight glass and a post-condensation pressure gauge.

[0013] Furthermore, the third pipeline is connected to a compressor suction pressure gauge.

[0014] The technical effects of the utility model are as follows:

[0015] (1) The structure of this device adopts an open structure, and there is no need to set up a shell to completely wrap the device, making the structure of the device more intuitive. During the training process, users can clearly understand the internal structure and working mode of the refrigeration and air conditioning. It is suitable for equipment introduction, work demonstration and skills training of related professionals;

[0016] (2) The refrigeration mechanism and heat exchange mechanism in the device are respectively provided with a plurality of solenoid valves, each of which is connected to a different working component, so that the working mode of the device can be switched by adjusting the opening or closing of different solenoid valves, so that the device has multiple working modes, which expands the demonstration and training functions of the device;

[0017] (3) The device is equipped with a hot water tank, condenser, heat exchanger, fan coil and evaporator components. The refrigerant in the pipeline can exchange heat with different media, which is convenient for demonstrating different cooling or heating effects and deepening the user's understanding of professional knowledge;

[0018] (4) The multiple pressure gauges installed in this device can measure and display the pressure at the corresponding position in real time, which is convenient for users to understand the state changes of the refrigeration cycle working process. After recording the data, it can also be used to draw the pressure-enthalpy diagram of the refrigeration cycle and conduct the thermodynamic cycle process analysis of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the utility model.

[0020] Among them, the accompanying drawings are marked as follows: 1. compressor; 2. solenoid valve 1; 3. hot water tank; 4. check valve 1; 5. liquid storage tank; 6. solenoid valve 2; 7. condenser; 8. check valve 2; 9. dry filter; 10. sight glass; 11. solenoid valve 3; 12. electronic expansion valve 1; 13. heat exchanger; 14. check valve 3; 15. circulation pump; 16. fan coil; 17. solenoid valve 4; 18. electronic expansion valve 2; 19. evaporator; 20. check valve 4; 21. gas-liquid separator; 22. compressor exhaust pressure gauge; 23. post-condensation pressure gauge; 24. compressor suction pressure gauge. DETAILED DESCRIPTION

[0021] The technical solution of the present utility model will be clearly and completely described below in conjunction with specific embodiments and drawings.

[0022] See also Figure 1 A refrigeration and air-conditioning skill training device includes a compressor 1, a refrigeration mechanism connected to the compressor 1 through a first pipeline, a liquid storage device 5 connected to the refrigeration mechanism, a heat exchange mechanism connected to the liquid storage device 5 through a second pipeline, and a gas-liquid separator 21 connected to the heat exchange mechanism through a third pipeline. The gas-liquid separator 21 is connected to the compressor 1, the refrigeration mechanism includes a refrigeration mechanism 1 and a refrigeration mechanism 2 with different working modes, and the heat exchange mechanism includes a heat exchange mechanism 1 and a heat exchange mechanism 2 with different working modes.

[0023] Furthermore, the refrigeration mechanism 1 includes a solenoid valve 2 connected to the first pipeline, a water inlet of the hot water tank 3 connected to the solenoid valve 2, and a check valve 4 connected to the water outlet of the hot water tank 3. The check valve 4 is connected to the liquid reservoir 5 through the first branch pipe.

[0024] Further, the second refrigeration mechanism includes a second solenoid valve 6 connected to the first pipeline, a condenser 7 connected to the second solenoid valve 6, and a second check valve 8 connected to the condenser 7. The second check valve 8 is connected to the liquid storage 5 through a second branch pipe. The condenser 7 in this embodiment is an air-cooled condenser 7.

[0025] Further, the heat exchange mechanism 1 includes a solenoid valve 3 11 connected to the second pipeline, an electronic expansion valve 12 connected to the solenoid valve 3 11, a heat exchanger 13 connected to the electronic expansion valve 12, and a check valve 3 14 connected to the heat exchanger 13, and the check valve 3 14 is connected to the third pipeline through a third branch pipe. The heat exchanger 13 in this embodiment is a plate heat exchanger 13.

[0026] Further, the heat exchange mechanism 2 includes a solenoid valve 4 17 connected to the second pipeline, an electronic expansion valve 2 18 connected to the solenoid valve 4 17, an evaporator 19 connected to the electronic expansion valve 2 18, and a check valve 4 20 connected to the evaporator 19, and the check valve 4 20 is connected to the third pipeline through a fourth branch pipe. The evaporator 19 in this embodiment is an air-cooled evaporator 19

[0027] Furthermore, the heat exchanger 13 is connected to a circulation pipe, a circulation pump 15 is connected to the circulation pipe, and the circulation pipe is connected to a fan coil unit 16 .

[0028] Furthermore, a compressor exhaust pressure gauge 22 is connected to the first pipeline.

[0029] Furthermore, the second pipeline is connected with a drying filter 9, a sight glass 10 and a post-condensation pressure gauge 23.

[0030] Furthermore, a compressor suction pressure gauge 24 is connected to the third pipeline.

[0031] In this scheme, solenoid valve 1 2 and solenoid valve 2 6 can be opened at the same time or only one of them can be opened. Solenoid valve 3 11 and solenoid valve 4 17 can also be opened at the same time or only one of them can be opened. Different opening combinations of the two groups of solenoid valves can realize multiple working modes. Two of the working modes are introduced below.

[0032] The working mode 1 of the utility model is as follows:

[0033] Start the device, solenoid valve 1 2 and solenoid valve 2 6 are powered on and opened, solenoid valve 3 11 and solenoid valve 4 17 are also powered on and opened, and the high-temperature and high-pressure refrigerant gas discharged from the compressor 1 is divided into two paths; one of the paths enters the hot water tank 3 through the solenoid valve 1 2 to condense and release heat, and the heat is absorbed by the water in the water tank, the water temperature rises, and hot water is produced, and the high-temperature and high-pressure refrigerant gas becomes a high-pressure normal-temperature refrigerant, and then flows out from the check valve 1 4; at the same time, the other path of high-temperature and high-pressure refrigerant gas enters the condenser 7 through the solenoid valve 2 6 to release heat, and the heat is taken away by the fan, and the high-temperature and high-pressure refrigerant gas becomes a high-pressure normal-temperature refrigerant, and then flows out from the check valve 2 8, merges with the refrigerant flowing out of the check valve 1 4, and then enters the liquid storage 5, the drying filter 9 and the sight glass 10 in sequence;

[0034] After that, the refrigerant is divided into two paths: one path passes through the electromagnetic valve three 11, is throttled and reduced in pressure by the electronic expansion valve one 12 to become a low-temperature and low-pressure refrigerant wet vapor, then enters the heat exchanger 13 for heat exchange, and then flows out from the check valve three 14. At the same time, after the refrigerant exchanges heat with the refrigerant in the heat exchanger 13, it is transported to the fan coil 16 through the circulation pump 15 for cooling and cooling. The refrigerant is then transported back to the heat exchanger 13 to continue circulating; the other path of refrigerant passes through the electromagnetic valve four 17, is throttled and reduced in pressure by the electronic expansion valve two 18 of the air-cooled evaporator 19 to become a low-temperature and low-pressure refrigerant wet vapor, enters the evaporator 19 for heat exchange, and then flows out from the check valve four 20, merges with the refrigerant flowing out of the check valve three 14, and returns to the compressor 1 through the gas-liquid separator 21, completing a working cycle process;

[0035] The compressor exhaust pressure gauge 22, the post-condensation pressure gauge 23 and the compressor suction pressure gauge 24 are used to detect and monitor the pressure values ​​of key nodes in the working process of the device. The values ​​can be used to draw the pressure-enthalpy diagram of the system and analyze the thermal cycle process of the system.

[0036] The working mode 2 of the utility model is as follows:

[0037] Start the device, solenoid valve 1 2 is powered on and opened, solenoid valve 2 6 is powered off and closed, solenoid valve 3 11 is powered on and opened, solenoid valve 4 17 is powered off and closed, and the high-temperature and high-pressure refrigerant gas discharged from the compressor 1 enters the hot water tank 3 through the solenoid valve 1 2 to condense and release heat, and the heat is absorbed by the water in the water tank, the water temperature rises, and hot water is produced, and the high-temperature and high-pressure refrigerant gas becomes a high-pressure normal-temperature refrigerant, and then flows out from the check valve 1 4, and then enters the liquid storage tank 5, the drying filter 9 and the sight glass 10 in sequence;

[0038] After that, the refrigerant passes through the electromagnetic valve 3 11, is throttled and reduced in pressure by the electronic expansion valve 12 to become low-temperature and low-pressure refrigerant wet vapor, enters the heat exchanger 13 for heat exchange, and then flows out from the check valve 3 14. At the same time, after the refrigerant exchanges heat with the refrigerant in the heat exchanger 13, it is transported to the fan coil 16 through the circulation pump 15 for cooling and cooling. The refrigerant is then transported back to the heat exchanger 13 to continue circulating. The refrigerant flowing out of the check valve 3 14 returns to the compressor 1 through the gas-liquid separator 21, completing a working cycle.

[0039] The above embodiments are only preferred embodiments of the present utility model. Those skilled in the art can obtain other embodiments from the above embodiments without creative work. Therefore, the present application protects not only the above embodiments, but also the scope consistent with the principles and features of the present application.

Claims

1. A refrigeration and air conditioning skills training device, It is characterized in that The invention comprises a compressor (1), a refrigeration mechanism connected to the compressor (1) via a first pipeline, a liquid storage device (5) connected to the refrigeration mechanism, a heat exchange mechanism connected to the liquid storage device (5) via a second pipeline, and a gas-liquid separator (21) connected to the heat exchange mechanism via a third pipeline, wherein the gas-liquid separator (21) is connected to the compressor (1), the refrigeration mechanism comprises a refrigeration mechanism 1 and a refrigeration mechanism 2 with different working modes, and the heat exchange mechanism comprises a heat exchange mechanism 1 and a heat exchange mechanism 2 with different working modes.

2. The refrigeration and air conditioning skills training device according to claim 1, It is characterized in that The refrigeration mechanism 1 comprises an electromagnetic valve 1 (2) connected to the first pipeline, a water inlet of a hot water tank (3) connected to the electromagnetic valve 1 (2), and a check valve 1 (4) connected to a water outlet of the hot water tank (3); the check valve 1 (4) is connected to the liquid storage tank (5) via a first branch pipe.

3. The refrigeration and air conditioning skills training device according to claim 1, It is characterized in that The second refrigeration mechanism comprises a second solenoid valve (6) connected to the first pipeline, a condenser (7) connected to the second solenoid valve (6), and a second check valve (8) connected to the condenser (7); the second check valve (8) is connected to the liquid storage tank (5) via a second branch pipe.

4. The refrigeration and air conditioning skills training device according to claim 1, It is characterized in that The heat exchange mechanism one comprises an electromagnetic valve three (11) connected to the second pipeline, an electronic expansion valve one (12) connected to the electromagnetic valve three (11), a heat exchanger (13) connected to the electronic expansion valve one (12), and a check valve three (14) connected to the heat exchanger (13); the check valve three (14) is connected to the third pipeline via a third branch pipe.

5. The refrigeration and air conditioning skills training device according to claim 1, It is characterized in that The heat exchange mechanism 2 comprises a solenoid valve 4 (17) connected to the second pipeline, an electronic expansion valve 2 (18) connected to the solenoid valve 4 (17), an evaporator (19) connected to the electronic expansion valve 2 (18), and a check valve 4 (20) connected to the evaporator (19); the check valve 4 (20) is connected to the third pipeline via a fourth branch pipe.

6. The refrigeration and air conditioning skills training device according to claim 4, It is characterized in that The heat exchanger (13) is connected to a circulation pipe, a circulation pump (15) is connected to the circulation pipe, and the circulation pipe is connected to a fan coil unit (16).

7. The refrigeration and air conditioning skills training device according to claim 1, It is characterized in that The first pipeline is connected to a compressor exhaust pressure gauge (22).

8. The refrigeration and air conditioning skills training device according to claim 1, It is characterized in that The second pipeline is connected to a drying filter (9), a sight glass (10), and a post-condensation pressure gauge (23).

9. The refrigeration and air conditioning skills training device according to claim 1, It is characterized in that The third pipeline is connected to a compressor suction pressure gauge (24).

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