Constant-temperature instantaneous hot type electric water heater

Abstract

The invention provides a constant-temperature instantaneous hot type electric water heater. The constant-temperature instantaneous hot type electric water heater comprises a water inlet pipe, a heating cavity and a water outlet pipe, wherein the heating cavity is internally provided with an electric heating pipe; a water wheel which takes the axis of the water inlet pipe as a rotation shaft is arranged in the water inlet pipe; permanent magnetic stripes which extend along the radius are uniformly distributed along the circumferential direction of the water wheel; a coil array which surrounds the water wheel is fixed at the periphery of the water inlet pipe; coils in the coil array are uniformly distributed along the circumferential direction and take the shape of a solenoid; the axes of the coils are along the radius direction of the water wheel; each coil in the coil array is coupled with an AC / DC conversion module so as to form an induction DC unit; the induction DC units are connected in series or in parallel to form a DC input unit; the DC input unit is coupled with an input end of an amplification module; an output end of the amplification module is coupled with the electric heating pipe. According to the electric water heater, the heating efficiency can be automatically adjusted according to the water-out speed, so that the sintering phenomenon can be prevented and the water-out temperature can keep a relatively stable state.

Description

technical field [0001] The invention relates to the field of electric water heaters, in particular to an instant electric water heater. Background technique [0002] At present, there are many types of instantaneous electric water heaters, and they are widely liked by people because they can produce hot water within a few seconds. The more common instantaneous electric water heater is usually used in the bathroom faucet; its internal main structure is an electric heating tube; due to the need to quickly heat cold water, the power of the electric heating tube is generally higher, generally above 3kw, therefore, there is not enough water in the faucet. In the case of cold water replenishment, if the electric heating tube works at the rated power, it is very likely to burn out the internal structure of the electric heating tube and the faucet. [0003] For the current instant faucet, the electric heating tube is generally activated by the micro switch inside, and the micro s...

AI Technical Summary

Problems solved by technology

The more common instantaneous electric water heater is usually used in the bathroom faucet; its internal main structure is an electric heating tube; due to the need to quickly heat cold water, the power of the electric heating tube is generally higher, generally above 3kw, therefore, there is not enough water in the faucet. In the case of cold water replenishment, if the electric heating tube works at the rated power, it is very likely to burn out the internal structure of the electric heating tube and the faucet

[0003] For the current instant faucet, the electric heating tube is generally activated by the micro switch inside, and the micro switch can only trigger the electric heating tube to work at the rated power. cause sintering phenomenon; in this regard, some instant hot faucets are also equipped with water temperature sensors to prevent the internal temperature from being too high. Inaccurate sensing or functional failure, it is still difficult to play a protective role

On the other hand, since the micro switch can only trigger the electric heating tube to work at the rated power, it is impossible to keep the outlet water temperature in a relatively stable state when the outlet water speed changes.

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