초록 ▼

A water heater includes: a reservoir having a feed pipe protruding inwardly into the reservoir for directing cold water into the reservoir; a main heater having a main thermostat sensor juxtapositionally secured in an immersion pipe section of the feed pipe inserted in the reservoir and a main elect

A water heater includes: a reservoir having a feed pipe protruding inwardly into the reservoir for directing cold water into the reservoir; a main heater having a main thermostat sensor juxtapositionally secured in an immersion pipe section of the feed pipe inserted in the reservoir and a main electric heater electrically connected with the main thermostat sensor through a controller connected to a power source, whereby upon sensing of a preset high temperature by the main thermostat sensor, the main electric heater will be actuated to heat the water fed into the reservoir to the preset high temperature; and at least an auxiliary heater having an auxiliary thermostat sensor mounted in an outer pipe section of the feed pipe outside the reservoir and an auxiliary electric heater electrically connected with the auxiliary thermostat sensor, whereby upon sensing of a preset low temperature by the auxiliary sensor outside the reservoir, the auxiliary electric heater will also be actuated to heat the water in the reservoir in cooperation with the main heater for quickly heating the water in the reservoir and for quickly supplying warm water as discharged from the reservoir.

대표청구항 ▼

[ I claim:] [1.] A water heater comprising:a reservoir (1) having a feed pipe (2) mounted on and inserted in a bottom or lower portion of the reservoir (1) for directing water into said reservoir (1), and a discharge pipe (15) mounted on a top portion for discharging water outwardly as heated in sai

[ I claim:] [1.] A water heater comprising:a reservoir (1) having a feed pipe (2) mounted on and inserted in a bottom or lower portion of the reservoir (1) for directing water into said reservoir (1), and a discharge pipe (15) mounted on a top portion for discharging water outwardly as heated in said reservoir (1);a main heating means (3) including a main thermostat sensor (31) having a high constant temperature preset therein and juxtapositionally secured in said feed pipe (2) protruding inwardly in said reservoir for sensing an inside temperature in said feed pipe (2) and in said reservoir (1), and a main electric heating element (32) electrically connected to the main thermostat sensor (31) and electrically connected to a power source (61) through a controller (6) mounted on the reservoir (1) for switching on or off a power supply to the main electric heating means (32), whereby upon sensing of the inside temperature to be below the preset high constant temperature by the main thermostat sensor (31), the main heating element (32) will be actuated for heating water in said reservoir until reaching the preset high constant temperature; and at least an auxiliary heating means (4, 5) having an auxiliary thermostat sensor (41, 51) preset therein a medium or low constant temperature and secured in said feed pipe (2) outside the reservoir (1) for sensing a temperature in said feed pipe (2) outside the reservoir, and an auxiliary electric heating element (42, 52) mounted in the reservoir and electrically connected to said auxiliary thermostat sensor (41, 51), whereby upon sensing of the temperature to be below the preset medium or low constant temperature by the auxiliary thermostat sensor, said auxiliary heating element will be actuated for heating water in said reservoir until reaching the preset medium or low constant temperature.