公开(公告)号：JPH0227198A

公开(公告)日：1990-01-29

申请号：JP17864088

申请日：1988-07-18

Applicant: MATSUSHITA REFRIGERATION

Inventor： KIDA TAKUMI ,  SUZUKI SOUZOU

IPC: F04D29/30

Abstract: PURPOSE:To prevent the separation of the air flow at the impeller negative pressure surface side near a main plate by projecting an impeller inlet side end part of the boundary part from a main plate of the impeller to the direction of the rotation of the impeller. CONSTITUTION:The air led into an impeller 6 from an inlet 5 through an orifice, to which the dynamic pressure and the static pressure are added by the work of a vane plate 7, are discharged to the out of the impeller 6. The vane inlet angle beta1 at a projection 7a to the direction of the rotation at the vane inlet side end part of the boundary part of a vane plate 7 from a main plate 8 is almost coincide with the air inflow angle near the main plate 8 which becomes small by the lowering of the inflow air current speed. Thereby, the inflow air near the main plate 8 flows along the vane plate 7, and the generation of separating of the flow at the vane plate 7 ventral side near the main plate 8 is eliminated.

公开(公告)号：JPH01139957A

公开(公告)日：1989-06-01

申请号：JP30084487

申请日：1987-11-27

Applicant: MATSUSHITA REFRIGERATION

Inventor： KIDA TAKUMI ,  KAMITSUJI TOSHIO ,  KOYAMA TAKASHI ,  UMEOKA IKUTOMO ,  SUZUKI SOUZOU

IPC: F25B5/00

Abstract: PURPOSE:To prevent a mechanical vibration and a noise from being generated by a method wherein an electrical current is generated between some electrodes in coolant pipes and a high magnetic field is generated by a superconductive coil. CONSTITUTION:For example, in case that only one of evaporators 7, 7' is operated, a two-way valve at an inlet of an evaporator to be operated is opened and another two-way valve at another inlet of another evaporator to be stopped is closed. A switch 18 for a fluid pump 11 is closed and another switch 18' is opened. In this case, coolant within a coolant pipe 12b at a fluid pump 11 is ionized by a positive electrode 15 and a negative electrode 16 and then an electrical current is flowed from the electrode 15 to the electrode 16. In turn, a strong magnetic flux is generated between the super conductive coils 13 and 14 from a super conductive coil 13 to a super conductive coil 14. Due to this fact, a Lorentz force is generated by an electric current flowing between the electrodes 15 and 16 and a magnetic flux between the super conductive coils 13 and 14. The ionized coolant is moved toward the condenser 2, a flow of the coolant is produced and then this is circulated within a cooling device 10. In this way, since an electromagnetic flow of coolant is generated by Lorentz force, any mechanical vibration and noise may not be generated.