A centralized exhaust device for a refrigeration machine room

Abstract

The invention discloses a centralized exhaust device for a refrigerating machine room. The exhaust device is arranged on the top of the highest part of each refrigeration pipe in the refrigerating machine room. The exhaust device includes a main body unit, a constant negative pressure generating unit and an electric control reset unit . In the present invention, because the weight of the counterweight one is greater than the weight of the counterweight two, the counterweight one will generate an upward pulling force on the counterweight two through the connecting rope, and the pulling force remains constant. The freezing pipe is connected, the freezing pipe has frozen water, and the inside of the air collecting chamber under the piston is relatively sealed, so a constant "negative pressure" state will be generated inside the air collecting chamber under the piston, so that once there is gas in the freezing pipe, It will speed up the gas inside the freezing pipeline entering the gas-collecting cavity, and when the gas in the freezing pipeline enters, the second counterweight will drive the piston to move upward, and the first counterweight will move downward, so that the inside of the gas-collecting cavity will always maintain a negative pressure state .

Description

technical field [0001] The invention relates to the technical field of exhaust devices, in particular to a centralized exhaust device for a refrigeration machine room. Background technique [0002] The chilled water pipeline at the highest point of the original refrigeration room needs to be equipped with an automatic exhaust valve to eliminate the gas collection in the pipeline, so as to facilitate the smooth flow of water in the pipeline and avoid air blockage, so as to realize the corresponding functions. [0003] However, there will be the following disadvantages in the actual use process: 1. During the initial pressure test and later maintenance of the refrigeration room, it is necessary to repeatedly use ladders to climb to the top of the pipeline. The workload is heavy and the cost is high. Stamping on the top of the pipeline will damage the insulation of the pipeline; 2. , The automatic exhaust valve is set on the top of the pipeline in the equipment room. When exhau...

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Problems solved by technology

[0003] However, there will be the following disadvantages in the actual use process: 1. During the initial pressure test and later maintenance of the refrigeration room, it is necessary to repeatedly use ladders to climb to the top of the pipeline. The workload is heavy and the cost is high. Stamping on the top of the pipeline will damage the insulation of the pipeline; 2. , The automatic exhaust valve is set on the top of the pipeline in the computer room, and water mist will be sprayed out with the gas when exhausting, which will affect the environment of the computer room

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