| 摘要 |
The present invention relates to a refrigerant pipe cleaning apparatus comprises: a piston absorbing body; a pressure generation part; and a pressure control part. The piston absorbing body can be inserted into the refrigerant pipe and can be deformed depending on the shape of the refrigerant pipe. The pressure generation part can be connected to one side of the refrigerant pipe and applies a preset pressure to the interior of the refrigerant pipe to allow the piston absorbing body to be moved along the refrigerant pipe. The pressure control part can be connected to the other side of the refrigerant pipe and has a recovery space, into which foreign substances can be introduced. A fluid among the foreign substances of the refrigerant pipe is introduced into the recovery space, and a gas among the foreign substances is discharged. A pressure of the recovery space is higher than the atmospheric pressure but lower than the pressure in the pressure generation part. The movement speed of the piston absorbing body is controlled using the difference between the pressure of the recovery space and pressure of the pressure generation part. |
