Flow-optimized line connector, and line connector assembly

A line connector for fluidically connecting fluid lines, comprising a housing with a receiving space, a connection piece and a channel through which fluid can flow with a diameter d, wherein the channel through which fluid can flow has a first straight channel portion and a bent channel portion, wherein the bent channel portion is directly connected to the first straight channel portion through which fluid can flow and can be connected to a second straight channel portion through which fluid can flow, wherein a deflection angle α is formed between the first straight channel portion and the second channel portion, wherein the bent channel portion has an inner channel line and an outer channel line, wherein the outer channel line is less strongly curved than the inner channel line, wherein the outer channel line of the bent channel portion has a length L over an entire extent of the bent channel portion, wherein, if the channel through which fluid can flow has a diameter d, the following applies:

• 0.9*α*d≤L≤1.1*α*d, and wherein, when one of the two straight channel portions has a smaller diameter D1 and the other of the two straight channel portions has a larger diameter D2, the following applies:
• 0.9*α*D1≤L≤1.1*α*D2, wherein the bent channel portion has at least one widening.