The invention discloses a fast-heating type
water heating device. The invention relates to a
water heating device, in particular to the fast-heating type
water heating device which performs heating by using a stainless steel substrate
electric heating film and is applied to an instant electric kettle. The fast-heating type water heating device mainly comprises an
electric heating film heating plate, a
water channel plate, a heating body rear plate, a temperature controller, a thermo-sensitive
resistor, a water inlet, a water outlet and a
control circuit, wherein the
electric heating film heating plate (1) and the heating body rear plate (3) clamp the
water channel plate (2) and are connected into a whole by a connecting piece or in a
welding sealing mode; a
grating (14) is arranged on thewater channel plate (2); a
water channel cavity (9) capable of making
water flow is formed between the
grating (14) on the water channel plate (2) and the electric
heating film heating plate (1); theshape of the cavity guides a flowing direction of the water; and the water inlet and the water outlet are positioned at upper and lower ends of the water channel plate and led out from the water channel plate by the heating body rear plate. The fast-heating type water heating device is characterized in that: the electric
heating film heating plate (1) is curved and in clearance fit with the waterchannel plate (2), so a local clearance is formed at a joint between the electric
heating film heating plate (1) and the
grating (14) which is arranged on the water channel plate (2). The invention has the advantages that: compared with the prior art, the fast-heating type water heating device is higher in heat efficiency, better in temperature
controllability and lowest in flowing resistance of a heating body; and a water outlet temperature can be controlled to be above 95 DEG C during fast heating.