ELECTRICALLY HEATED PUMP FOR SPAS AND SWIMMING POO

专利名称：ELECTRICALLY HEATED PUMP FOR SPAS

AND SWIMMING POOLS

发明人：Murray J. Wright申请号：US06/464423申请日：19830207公开号：US04594500A公开日：19860610

摘要：A pump for a spa or swimming pool adapted to heat the liquid being pumpedincludes a rigid plastic housing fabricated from (1) a first housing part having a voluteportion defining a suction chamber enclosing a pump impeller and having an outlettherefrom and a boss defining an inlet thereto and (2) a second housing part having adischarge outlet and a tubular inlet. A sleeve extends between the tubular inlet andvolute portion boss to define a suction inlet to the suction chamber. A body extensioninserted between the first and second housing parts defines a pressure chamber

surrounding the suction inlet and suction chamber and in communication with the suctionchamber outlet and discharge outlet. An electrical heater is positioned in the pressurechamber to heat the liquid pumped by the impeller and is controlled by temperature andpressure sensing devices positioned in the pressure chamber.

申请人：WRIGHT MURRAY JOSEPH

代理人：Bert J. Lewen,Henry Sternberg

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