| 摘要 |
FIELD: heating, refrigeration art. ^ SUBSTANCE: invention refers to a heat exchanger such as an evaporator, a condenser for a refrigerator, as well as to a method for fabricating the same. Said heat exchanger for refrigerators comprises a board and a refrigerant-carrying tubing that is in thermally conductive contact with said board and with a retaining material layer being attached to said tubing. The retaining material layer consists of a bitumen compound and it is bonded to the board by an adhesive layer. The tubing has a flattened cross-section. The adhesive layer consists of a heat-activated adhesive. The bitumen compound contains from 50% to 80% of a filler. Stone powder is used as said filler. A coat of varnish is applied to the retaining material layer face that is opposite the board. An average thickness of the retaining material layer is of 0.5 to 2 mm, and preferably of 1.0 to 1.5 mm. The method for fabricating such a heat exchanger, in particular its evaporator or condenser, includes the following steps: forming a package comprising board, refrigerant-carrying tubing and plate of bitumen compound, heating said plate and pressing said package together. The board, tubing and bitumen compound plate are laid up in the above said order. ^ EFFECT: providing an inexpensive heat exchanger with improved performance. ^ 9 cl, 5 dwg |
