Instant hot water boiler structure

An instant hot water boiler structure, comprises:

• a water storage tank provided between a combustion chamber and the wall of said boiler, these members being the first stage water flow warming chamber and tank;
• a smoke discharging cover with a water receiving tank provided and locked on the top end of said boiler, said water receiving tank being the middle stage water flow warming tank;
• a heat exchanger is removably hung in said combustion chamber to be the last stage water flow rapid heating chamber;
• numerous pipes being provided to communicate with all said chamber and tanks sequentially,
• said boiler structure is characterized in that:
• said heat exchanger is constructed with a plurality of vertically arranged bundles of pipes welded to the bottom of a horizontally disposed water collecting tray, wherein;
• said water collecting tray is provided with a disk like cover which is provided at suitable locations thereof with a water injection pipe and a water releasing pipe respectively;
• a plurality of partitions are provided in said water collecting tray to form a plurality of encircling water chambers which are assigned as a water feeding chamber, a water discharging chamber and a plurality of water exchanging chambers which are located between said water feeding chamber and said water discharging chamber in both clockwise and counterclockwise directions;
• each of said bundles of pipes is welded to the bottom of corresponding and neighbouring water chambers of said water collecting tray, numerous U-shaped pipe members are arranged to be encircled one by another to form said bundles of pipes in cross type, each said U shaped pipe member of said bundles of pipes has the same curvature and same diameters, the ends of said U-shaped pipe members are divided equally into two groups to connect with corresponding water chambers, so that said water chambers are provided on the bottom thereof with a plurality of water feeding holes and water draining holes for communication, water flow thereby can flow through said water feeding chamber, water discharging chamber and water exchanging chambers in a three dimentional flow path.