Compressor start-up protection device and air-cooled chiller technology realization elements

Technical realization elements:

3. In order to overcome at least to a certain extent, at the moment when the fixed-frequency scroll compressor of the air-cooled chiller starts, the compressor has a very large start-up shock, resulting in very high air velocity and pressure through the four-way valve. The sliding block of the four-way valve is broken, causing the four-way valve to fail to change direction, reducing the quality of the modular air-cooled chiller, and causing customer complaints. This technology provides a compressor start-up protection device and an air-cooled chiller.

4. In the first aspect, this technology provides a compressor startup protection device, including:

5. Monitoring module and four-way valve protection component;

6. The monitoring module is used to monitor the compressor startup parameter value;

7. The four-way valve protection component is used to relieve the pressure of the airflow in the compressor exhaust pipe when the startup parameter value exceeds a preset threshold, so as to prevent the high-pressure airflow generated when the compressor is started from flowing into the four-way valve.

8. Further, the four-way valve protection assembly includes:

9. The controller, the bypass pipeline and the solenoid valve; the solenoid valve is arranged on the bypass pipeline, one end of the bypass pipeline is connected to the compressor, and the other end is connected to the heat exchanger;

10. The solenoid valve is arranged on the bypass pipeline, and the controller is respectively connected with the monitoring module and the solenoid valve, and controls the opening or closing control of the solenoid valve according to the compressor startup parameter value monitored by the monitoring module The connection or disconnection of the bypass pipeline.

11. Further, the heat exchanger includes a condenser and an evaporator,

12. The bypass pipeline includes a first bypass pipeline and a second bypass pipeline;

13. The solenoid valve includes a first solenoid valve and a second solenoid valve;

14. One end of the first bypass pipeline is connected to a compressor, and the other end is connected to a condenser;

15. The first solenoid valve is arranged on the first bypass pipeline and is used to control the connection or disconnection of the first bypass pipeline;

16. One end of the second bypass pipeline is connected to a compressor, and the other end is connected to an evaporator;

17. The second solenoid valve is arranged on the second bypass pipeline and is used to control the connection or disconnection of the second bypass pipeline.

18. Further, the solenoid valve further includes:

19. The third solenoid valve, which is arranged on the pipeline between the compressor exhaust pipe and the four-way valve, and is used to control the conduction or disconnection of the pipeline.

20. Further, the four-way valve protection assembly includes:

21. A controller and a deceleration and pressure reduction valve, the deceleration and pressure reduction valve is arranged on the compressor exhaust pipe;

22. The controller is connected to the monitoring module, and is used to control the opening or closing of the deceleration and pressure reduction valve. When the deceleration and pressure reduction valve is opened, the airflow in the compressor exhaust pipe is pressure-relieved.

23. Further, the monitoring module includes:

24. A vibration displacement sensor, the vibration displacement sensor is arranged on the compressor, and the compressor startup parameter value is the compressor vibration displacement value.

25. Further, the monitoring module includes:

26. The pressure sensor is used to detect the airflow pressure in the exhaust pipe of the compressor, and the compressor startup parameter value is the airflow pressure in the compressor exhaust pipe.

27. Further, the monitoring module includes:

28. An air flow velocity sensor, which is used to detect the air flow velocity in the compressor exhaust pipe, and the compressor startup parameter value is the air flow velocity in the compressor exhaust pipe.

29. Further, when the compressor startup parameter value is the compressor vibration displacement value, the preset threshold value includes:

30. The preset vibration displacement value, the preset vibration displacement value is 300um.

31. In the second aspect, this technology provides an air-cooled chiller, including:

32. The compressor startup protection device, four-way valve, compressor and heat exchanger according to any one of the first aspect;

33. The compressor startup protection device is arranged between the compressor and the heat exchanger, and is used to relieve the pressure of the airflow in the compressor exhaust pipe when the startup parameter value exceeds a preset threshold, so as to prevent the compressor from starting The high-pressure air flow generated at the time flows into the four-way valve.

34. Further, the heat exchanger includes an evaporator and a condenser.

35. The technical solution provided by the embodiment of the present technology may include the following beneficial effects:

36. In the compressor startup protection device and air-cooled chiller provided in this embodiment, the compressor startup protection device includes a monitoring module and a four-way valve protection component. The monitoring module is used to monitor the compressor startup parameter value, and the four-way valve protection component is used When the startup parameter value exceeds a preset threshold, the airflow in the compressor exhaust pipe is pressure-relieved to prevent the high-pressure airflow generated when the compressor starts to flow into the four-way valve, which can prevent the compressor from overly impacting the four-way valve The slide block is broken to improve the quality of the unit and ensure the normal operation of the system.

37. It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the present technology.

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