Patent ID: 8989566
Filing Date: 2015-03-24
Classification: F04D

Abstract:
1. A heating pump, comprising: a motor; a housing fixed to the motor, the housing comprising a substantially cylindrical lateral wall, a discharge port arranged at the periphery thereof at a side of the housing away from the motor, and an axially arranged intake tube extending inside a space surrounded by the lateral wall nearer to the motor comparing to the discharge port; an impeller driven by the motor and received in the housing, the impeller comprising an axially arranged inlet communicating with the intake tube and a plurality of radially arranged, circumferentially spaced, outlets, and used for sucking liquid into a chamber defined inside the housing via the intake tube and discharging it radially outwards; a tubular heating member fixed in the housing; a first passage surrounded by the heating member, the outlets communicating with the discharge port via the first passage; and a second passage formed between a radially outer surface of the heating member and a radially inner surface of the housing and communicating with the first passage; wherein a number of guide blades are received in the first passage and configured to transfer part of rotary motion of a liquid flow generated by the impeller into vertical motion, leading the liquid flows from an end of the heating member near the motor to an opposite end of the heating member away from the motor in a spiral way through the first passage and finally to the discharge port.