HEAT EXCHANGER ARRANGEMENT

摘要

A heat exchanger assembly for a vehicle heating device includes inner heat exchanger housing (12) and outer heat exchanger housing (14). A fluid flow space (24) is formed between the inner heat exchanger housing and the outer heat exchanger housing. Flow guiding formations (40, 42), along circumferential walls (18, 22) of the housings, divide a portion of the fluid flow space into a first partial flow space (44) and a second partial flow space (46). A fluid inlet opening (49) opens to the first partial flow space and at least one fluid outlet opening (51) opens to the second partial flow space (46). A press fit formation (94) fixes the inner heat exchanger housing in relation to the outer heat exchanger housing and includes the first flow guiding formation and the second flow guiding formation and/or the press fit formation is in an end region (32) of the circumferential walls.

主权项

1. A heat exchanger arrangement, for a vehicle heater, the heat exchanger arrangement comprising:
a pot-shaped inner heat exchanger housing with a first bottom wall and with a first circumferential wall adjoining the first bottom wall and surrounding a longitudinal axis; a pot-shaped outer heat exchanger housing with a second bottom wall and with a second circumferential wall adjoining the second bottom wall and surrounding the longitudinal axis; a fluid flow space formed between the inner heat exchanger housing and the outer heat exchanger housing; a first flow guiding formation extending essentially in the direction of the longitudinal axis along the first circumferential wall and the second circumferential wall and a second flow guiding formation extending essentially in the direction of the longitudinal axis along the first circumferential wall and the second circumferential wall at a circumferentially spaced location from the first flow guiding formation, wherein the first flow guiding formation and the second flow guiding formation divide a part of the fluid flow space formed between the first circumferential wall and the second circumferential wall into a first partial flow space and a second partial flow space; at least one fluid inlet opening open towards the first partial flow space and at least one fluid outlet opening open towards the second partial flow space; and a press fit formation for fixing the inner heat exchanger housing in relation to the outer heat exchanger housing, the press fit formation comprising at least one of the first flow guiding formation and the second flow guiding formation and an end area of the circumferential walls located at a distance from the first bottom wall and the second bottom wall.