Heating startup system of water heater and water heater

Abstract

The invention discloses a heating startup system of a water heater and the water heater. The heating startup system is arranged in the water heater and comprises a water pressure cavity, a piston andan elastic component capable of acting on the piston. The piston can float in the water pressure cavity in the water flow direction. The water pressure cavity communicates with the atmosphere throughan air pressure balance hole. When water enters the water pressure cavity, the piston floats in the water inlet direction under the effect of the water flow to abut against an elastic contact piece tostart heating pipes; when no water enters the water pressure cavity, the piston moves in the opposite direction under the elastic force of an elastic component to move away from the elastic contact piece, and thus, an electric circuit of the heating pipes is closed; and when no water comes out of a faucet, water in the water pressure cavity does not flow, the driving force applied to the piston by the water flow is eliminated, then the elastic component makes the piston move in the opposite direction to make sure that the piston does not make contact with the elastic contact piece, power supply to the electric heating pipes is cut off, and dry burning of the electric heating pipe is prevented.

Description

technical field [0001] The invention relates to a water heater, in particular to a heating start system of the water heater. Background technique [0002] Household water heaters include instant faucets, electric water heaters and electric water dispensers. The heating starting system of the water heater includes a heating chamber provided with a heating pipe and a water pressure chamber provided with a float switch, and the heating pipe realizes electric conduction or electric cut-off through elastic contacts. When the hot water level is turned on, water enters the water pressure chamber, and the water flow makes the floating switch float up, and the floating switch touches the elastic contact piece to realize the electrical conduction of the heating pipe. When the hot water level is closed, there is no water inflow in the water pressure chamber, the floating switch sinks, and the elastic contacts separate to realize the electric cut-off of the heating pipe. [0003] If t...

AI Technical Summary

Problems solved by technology

[0003] If there is no water coming out of the faucet due to the accumulation of impurities and other reasons, and the hot water level is always turned on, that is to say, the external tap water is always supplying water to the water pressure chamber, and the float switch is kept in a floating state due to water pressure, which will make the heating chamber The heating tube inside is continuously heated, and the water in the heating chamber will always be in a heated state. Eventually, the heating chamber will be dried out until the heating tube is blown, and the water heater will be scrapped. Currently, about 3-5% of instant faucets have this situation.

In an even more serious situation, the heating chamber will explode due to excessive heat pressure, which will pose a serious safety hazard

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