WITHDRAWING DEVICE FOR SUCTION TYPE FREEZER

摘要

PURPOSE: A withdrawing device for a suction type freezer is provided to be able to discharge uncondensed gas constantly to improve the freezing efficiency by the pressure difference between the bleeding tank and the vacuum chamber even if the pressure of the cooling water passing through the ejector of a suction type freezer changes or is too low. CONSTITUTION: The bleeding device of a suction type freezer comprises; a bleeding tank(50) to collect uncondensed gas discharged from the shell(6) of a freezer; an electronic valve(58) to be opened and closed by an electric signal to discharge the uncondensed gas in the bleeding tank(50) out of the bleeding pipe(52); a water ejector(60) to discharge the uncondensed gas flew in as the electronic valve(58) is opened to the outside by the cooling water; a vacuum chamber(80) into which the uncondensed gas is introduced from the bleeding tank(50) as the electronic valve(58) is opened; a pressure difference switch(90) to open and close the electronic valve(58) by the pressure difference between the bleeding tank(50) and the vacuum tank(80).