초록 ▼

An improved "in-line" tankless electrical resistance water heater includes a top having a cold water inlet and a hot water outlet for connection to the cold, and hot water lines of a faucet in a sink. The water heater includes a body with a passageway through which cold water travels, from the top t

An improved "in-line" tankless electrical resistance water heater includes a top having a cold water inlet and a hot water outlet for connection to the cold, and hot water lines of a faucet in a sink. The water heater includes a body with a passageway through which cold water travels, from the top towards the bottom, where it is fed into two separate chambers on opposed sides of a diaphragm. A first of the two chambers has no outlet, and the pressure of cold water therein presses against a first side of the diaphragm, while the second chamber includes an outlet to a further chamber having a heating element therein. The second chamber also includes a plunger, biased by a spring against a second side of diaphragm, and a plunger rod, which contacts an operating member of a microswitch. When a hot water handle of the faucet is opened, water travels from the further chamber to lower the cold water pressure in the second chamber and flex the resilient member toward the microswitch, to move the operating member and actuate the microswitch, so that the heating element is switched on. When the hot water handle is closed, the pressure in the two chambers will be equalized, and the spring will push the resilient member back to shut off the heating element.

대표청구항 ▼

[ What is claimed is:] [1.] An improved "in-line" tankless water heater for interconnection between an electrical power supply, a cold water inlet line and a hot water supply line; the water heater, comprising:an elongated body having a top and a bottom;a temperature limit switch, a terminal block a

[ What is claimed is:] [1.] An improved "in-line" tankless water heater for interconnection between an electrical power supply, a cold water inlet line and a hot water supply line; the water heater, comprising:an elongated body having a top and a bottom;a temperature limit switch, a terminal block and a microswitch mounted on an exterior surface of the elongated body;the microswitch being carried on a lower portion of the elongated body, over a pair of chambers, secured to the elongated body;a cold water inlet and a hot water outlet held in the top;an elongated passage formed internally of the elongated body in fluid communication between the cold water inlet and the pair of chambers;the pair of chambers being separated by a resilient element;a first of the pair of chambers having an inlet and no outlet;a second of the pair of chambers having an inlet and an outlet;a heating element held in an elongated water heating chamber formed in the elongated body;the elongated water heating chamber being in fluid communication with the outlet of the second of the pair of chambers and the hot water outlet; andmeans for actuating the microswitch to activate the heating element and heat the water in the elongated water heating chamber.