The invention relates to a heat transfer machine. The device includes a tank with an outlet pipe and steam source, a deaerator column with a lid, and, positioned thereon, pipes for supplying water and purging vapor, the column containing an upper deaeration stage and a lower deaeration stage. Each stage includes a pressure plate and a distribution plate, which are installed so as to form a jet chamber in the space therebetween, and also includes attachments having irregularly-positioned elements. The deaeration stages are separated by a hydraulic seal formed by a sidewall of the pressure plate of the upper stage and by a protrusion which is connected to the lid of the deaeration column. The pipes for supplying water and purging vapor are located in a protrusion of the hydraulic seal, said protrusion being provided with apertures. The lower edges of the apertures are located above the upper edge of a sidewall of the hydraulic seal by an amount which exceeds the sum of the height of coolant overflow over the sidewall of the hydraulic seal and the hydraulic resistance of a channel of the hydraulic seal. The total cross-section of the apertures is determined so as to achieve steam pressure which is the same in the purging pipe as in the space in the protrusion of the hydraulic seal. The present invention increases operational reliability.