Heat exchanging means for a pump motor using a bypass tube within a recirculating water system

A pump for use in a recirculating water system comprising:

• an electric motor having an output shaft, said electric motor located in a motor chamber, said output shaft having a rotational axis, an impeller connected to said output shaft, said impeller located in an impeller chamber, rotation of said impeller is to result in liquid flowing through said impeller chamber from a main liquid inlet to a main liquid outlet, said impeller chamber being separated from said motor chamber;
• a liquid conducting tube located within said motor chamber, said liquid conducting tube surrounding said electric motor, said liquid conducting tube having a bypass inlet connecting with said impeller chamber, said liquid conducting tube having a bypass outlet connecting with said main liquid inlet;
• and
• said tube being formed of a plurality of U-shaped sections, each said U-shaped section having a pair of legs, each said leg located parallel to said rotational axis, whereby the configuration of said tube is to maximize the extraction of heat that is produced from said electric motor by absorbing of the heat contained within the liquid within said tube.

A pump for use in a recirculating water system comprising:

• an electric motor having an output shaft, said output shaft having a rotational axis, an impeller connected to said output shaft, said impeller located in an impeller chamber, rotation of said impeller results in liquid flowing through said impeller chamber from an inlet to an outlet, rotation of said impeller moves the liquid toward said outlet creating a pressurized environment within said impeller chamber;
• a pump motor housing having a pump motor chamber with said electric motor being located within said pump motor chamber, said impeller located exteriorly of said pump motor chamber, a tube located within said pump motor chamber, said tube being capable of conducting liquid from said pressurized environment through an outlet connection to said inlet, whereby said liquid within said tube is to absorb heat from said electric motor resulting in heating of said liquid and then result in discharging of the liquid in said tube into said inlet;
• and
• said outlet connection utilizes a pair of deflectable grommets and a rigid spacer, said grommets and said spacer being mounted on said tube with said spacer located between said grommets, said spacer and said grommets being movable on said tube, said grommets being compressingly deformed by being moved on said tube toward each other pressing each said grommet into tight engagement with said spacer establishing a liquid tight connection between said pump motor housing and said tube.