Balanced airflow distribution in a blow tube array
Publication Date: 2002-May-15
The IP.com Prior Art Database
This invention broadly relates to balancing the airflow distribution in an array of blow tubes or nozzles that are connected to a common plenum. In particular, this invention relates to balancing the airflow distribution in an array of blow tubes or nozzles that are connected to a common plenum for the purpose of cooling injection molded articles such as preforms; preforms are used to produce blow-molded bottles. By bringing the velocity of the air to near zero as it enters the tubes through the porous element, the air distribution from tube-to-tube would be balanced because of the uniform static pressure distribution in an adequately designed plenum. The static pressure of the air at each porous element would evenly drive the air into each tube. An advantage of improved in-situ cooling may be found in faster cycle times.