Title:
PUMP
Document Type and Number:
WIPO Patent Application WO/2023/149077
Kind Code:
A1
Abstract:
A pump comprising: a pump chamber 13 having a suction port P11 and a plurality of discharge ports P21 and P22; an electric motor 41 capable of forward and reverse rotation; an impeller 21 provided in the pump chamber and driven by the electric motor; and a switching valve 31 that is rotated by the electric motor via the impeller and has a valve body 32 that opens and closes the discharge ports, wherein the valve body has a plurality of shielding wall portions that close the discharge ports and a plurality of opening portions that open the discharge ports, the shielding wall portions and the opening portions are arranged so as to surround the impeller and set alternately in array in a circumferential direction of the valve body so that the discharge ports can be opened or closed depending on the rotational position of the valve body, the discharge ports are formed on an inner peripheral surface 13a of the pump chamber along an outer peripheral surface of the valve body, and the pump includes a one-way rotation transmission mechanism 51 that is interposed between the impeller and the switching valve, transmits the rotational force in a second direction from the impeller to the switching valve but does not transmit the rotational force in a first direction from the impeller to the switching valve.
Inventors:
SATO KATSUSHI (JP)
Application Number:
PCT/JP2022/045411
Publication Date:
August 10, 2023
Filing Date:
December 09, 2022
Export Citation:
Assignee:
FUJIKOKI CORP (JP)
International Classes:
F04D29/50; F04D29/46
Foreign References:
| JP2016148261A | 2016-08-18 | |||
| JPS57169284U | 1982-10-25 |
Attorney, Agent or Firm:
MASHIKO Naomichi (JP)
Download PDF: