Compressor start protection device and technical characteristics of air-cooled chiller

Technical characteristics:

1. A compressor startup protection device, characterized by comprising: a monitoring module and a four-way valve protection component; the monitoring module is used to monitor the compressor startup parameter value; the four-way valve protection component is used in the When the startup parameter value exceeds the preset threshold value, 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. 2. The compressor startup protection device according to claim 1, wherein the four-way valve protection assembly comprises: a controller, a bypass pipeline, and a solenoid valve; the solenoid valve is arranged on the bypass pipeline One end of the bypass pipeline is connected to a compressor, and the other end is connected to a heat exchanger; the controller is respectively connected to the monitoring module and the solenoid valve, and controls the solenoid according to the compressor startup parameter value monitored by the monitoring module. The opening or closing of the valve controls the connection or disconnection of the bypass pipeline. 3. The compressor startup protection device according to claim 2, wherein the heat exchanger includes a condenser and an evaporator, and the bypass pipeline includes a first bypass pipeline and a second bypass pipeline The solenoid valve includes a first solenoid valve and a second solenoid valve; one end of the first bypass pipeline is connected to the compressor, and the other end is connected to the condenser; the first solenoid valve is arranged in the first bypass The pipeline is used to control the connection or disconnection of the first bypass pipeline; one end of the second bypass pipeline is connected to the compressor, and the other end is connected to the evaporator; the second solenoid valve is arranged in the second bypass On the pipeline, it is used to control the connection or disconnection of the second bypass pipeline. 4. The compressor startup protection device according to claim 3, wherein the solenoid valve further comprises: a third solenoid valve disposed between the compressor exhaust pipe and the four-way valve On the pipeline, it is used to control the conduction or disconnection of the pipeline. 5. The compressor start-up protection device according to claim 1, wherein the four-way valve protection assembly comprises: a controller and a deceleration and pressure reduction valve, and the deceleration and pressure reduction valve is arranged in the compressor row. On the air pipe; 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. The compressor startup protection device according to claim 1, wherein the monitoring module comprises: a vibration displacement sensor, the vibration displacement sensor is provided on the compressor, and the compressor startup parameter value is Compressor vibration displacement value. 7. The compressor startup protection device according to claim 1, wherein the monitoring module comprises: a pressure sensor, the pressure sensor is used to detect the airflow pressure in the compressor exhaust pipe, and the compressor startup parameter The value is the airflow pressure in the compressor exhaust pipe. 8. The compressor startup protection device according to claim 1, wherein the monitoring module comprises: an airflow velocity sensor, the airflow velocity sensor is used to detect the airflow velocity in the compressor exhaust pipe, the compressor The start-up parameter value is the air flow velocity in the compressor exhaust pipe. 9. The compressor startup protection device according to claim 4, wherein when the compressor startup parameter value is a compressor vibration displacement value, the preset threshold includes: a preset vibration displacement value, and the preset threshold Set the vibration displacement value to be 300um.

10. An air-cooled chiller, characterized by comprising: the compressor startup protection device according to any one of claims 1-9, and a four-way valve, a compressor and a heat exchanger; the compressor startup protection The device is arranged between the compressor and the heat exchanger, and is used for depressurizing the airflow in the exhaust pipe of the compressor 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. 11. The air-cooled chiller according to claim 10, wherein the heat exchanger includes an evaporator and a condenser.

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