Suction-throttle pipe for a refrigerating appliance, and device for the production thereof

Abstract

The invention relates to a suction-throttle pipe for a refrigerating appliance, comprising a suction pipe (13), a throttle pipe (14) which is guided along the suction pipe (13), parallel to the same,and an adhesive strip (19) having a central strip that adheres to the throttle pipe (14) and two lateral strips (21, 22) surrounding the central strip (20) that adhere to the suction pipe (13) and overlap on a side of the suction pipe (13) opposing the throttle pipe (14). The invention also relates to a device for producing one such suction-throttle pipe, said device comprising at least one firstand second roller (1, 2; 3,4; 5,6; 7,8), the facing peripheral surfaces of said rollers forming a gap (15, 24). A suction pipe groove (10, 25) is formed at least in the peripheral surface of the firstroller (1; 3; 5; 7), for guiding the suction pipe (13) through the gap (15; 24), and a throttle pipe groove (12) is formed on the bottom of the suction pipe (10, 25), for bringing the throttle pipe (14) into contact with the suction pipe (13).

Description

technical field [0001] The invention relates to a combined suction-throttling pipe, in particular a suction-throttle pipe for supplying and discharging refrigerant to and from an evaporator of a refrigerating device, and to a suction-choke pipe for the manufacture of the suction - Device for throttle tube. Background technique [0002] In domestic refrigeration installations, the suction and throttling pipes are usually interconnected to the evaporator. There are essentially three constructions known for such combined suction and throttle tubes. In the first embodiment, the throttle tube passes inside the intake tube. To this end, a perforation or a diameter expansion must be provided locally on the suction line for introduction into the throttle tube, which must be reliably sealed off after the throttle tube has been installed. Another known possibility is to solder or weld the throttle tube to the intake tube. Since the throttle tube usually has a very small free cross...

AI Technical Summary

Problems solved by technology

The exposed longitudinal edge of the tape along the suction tube provides a considerable erosion surface on which moisture can condense, causing corrosion and can affect the adhesion of the tape and thus the mutual fixation of the suction and throttle tubes

Thus, although this bonding solution is simpler in application than the two aforementioned solutions, it has the disadvantage of lower durability

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