Kirsty Gilmour needed 69 minutes on court to beaten Kjaersfeldt in rubber sets 16-21, 21-11, 21-19.
Unseeded player from Switzerland, Jenjira Stadelmann made a surprise by defeating the 6th seed from Belgium, Lianne Tan.
Jenjira appeared full of confidence so she was able to win rubber set 21-12, 7-21, 21-19 over Lianne Tan, the silver medalist at the 2015 European Games.
Qualification for the semifinals made Jenjira Stadelmann listed as a first Swiss badminton player medalist at the European Games.
Jenjira Stadelmann in the semifinal met defending champion who is also the 2nd seed from Denmark, Mia Blichfeldt.
Mia Blichfeldt beat Turkiye's Neslihan Yigit in the quarter-finals with a score of 21-18, 21-8
