CN104949321A - Quick-heating type hot-plate-heated electric water heater controlled by water switch - Google Patents

Abstract

A quick-heating type hot-plate-heated electric water heater controlled by a water switch comprises a shell, a water tank, electric heating tubes, a water inlet tube, a water outlet tube, the water switch, a gear switch and the like. The water switch is of a water-pushed structure and comprises a main body, a cover plate, a sealing piece, a pushing piece, a spring or a spring piece, a mounting cover plate, a microswitch, a stationary contact, a movable contact, a terminal and a push pin of the microswitch. Water inlet and outlet channels are not directly communicated but separated by the cover plate, a circuit is switched on when water flows, and the circuit is switched off when the water does not flow; the water switch cooperates with the gear switch.

Description

The electric heater of the quick electrothermal plate heating that water flow switch controls

Technical field

The present invention relates to the electric heater of the quick electrothermal plate heating that water flow switch controls.

Background technology

The control method of current countries in the world electric heater has two kinds, and a kind of is adopt type liquid expansion temperature controller to set the temperature in water tank, after energising, electrothermal tube starts to heat up, and stops heating after reaching temperature, when the temperature in water tank declines, heat again, continuous repetition, when exceeding design temperature, cuts off the electricity supply, be called mechanical type control method, liquid expansion type controls, and energising continuously in 24 hours, wastes energy; When temperature control inefficacy meeting laser heating, water heater is exploded; Another kind adopts microcomputer chip and relay and other electron component, and hydrous water flow sensor, when measuring water flow, then start electrothermal tube work by relay, this electronic controller has tens of electrons element, hundreds of contacts, easy generation fault, cost is also higher; The invention provides a kind of by water flow switch, the control method that Direct driver electrothermal tube is turned on or off and corresponding water heater structure.

Summary of the invention

The electric heater of the quick electrothermal plate heating that water flow switch of the present invention controls, is made up of water flow switch 20, water tank 12, electrothermal tube 13, water inlet pipe 14, outlet pipe 15, shell 17 etc.; Described water flow switch 20 is made up of the pushing pin 11 of main body 1, cover plate 2, seal 3 and impeller 4, spring or spring leaf 5, installation cover plate 6, microswitch 7, stationary contact 8, movable contact 9, terminal 10, microswitch, in main body 1, the passage of water inlet and water outlet is not directly communicate, but separated by cover plate 2, when there being water flow, water can promote cover plate 2, promote seal 3 simultaneously makes movable contact 9 contact with stationary contact 8 with impeller 4, circuit turn-on; Current are closed, and circuit disconnects; Because electrothermal tube has more than one, different temperature needs one or a few electrothermal tube work, is determined by driving switch 21.

Described electric heating element 13 forms water stream channel by hollow aluminum section and upper and lower end cap, in the middle of hollow aluminum section, there is cross section to be heating wire that is circular or flat, high voltage withstanding, the resistant to elevated temperatures multilayer mica insulation board in two sides is isolated, make electric heating board type heater, on the two sides, outside of heater, with hollow aluminum section material, heater is clamped.

Described instantaneous water heater refers to that water tank capacity is very little, water flows through namely by the electric heater heated, feature is: many electrothermal tubes 13 are housed in water tank and control electrothermal tube circuit conducting or closedown by water flow switch 20, determines different electrothermal tube work or do not work by driving switch 21; The water inlet of water flow switch 20 and the passage of water outlet are not directly communicate, but are separated by cover plate 2, and when there being water flow, water can promote cover plate 2, promote seal 3 and impeller 4 simultaneously, and movable contact 9 is contacted with stationary contact 8, circuit turn-on; Current are closed, and circuit disconnects.

Beneficial effect of the present invention and novelty directly control being turned on or off of electrothermal tube with current, and when having water flow, electrothermal tube is connected, and automatically disconnects when water is closed.

Accompanying drawing explanation

Fig. 1 Fig. 2 is the Water flow switch structure figure of water jet propulsion formula by microswitch break-make, and Fig. 1 is closed condition, and Fig. 2 makes microswitch on-state for there being water flow

Fig. 3 is microswitch structure schematic diagram

Fig. 4 Fig. 5 is the structural representation that water flow switch directly promotes contact

Fig. 6 is the electric heater structural representation of the quick electrothermal plate heating that water flow switch controls

Detailed description of the invention

In accompanying drawing, the main body 1 of water flow switch, cover plate 2, seal 3, impeller 4, spring or spring leaf 5, cover plate 6 is installed, microswitch 7, stationary contact 8, movable contact 9, terminal 10, the pushing pin 11 of microswitch, water tank 12, electric heating element 13, water inlet pipe 14, outlet pipe 15, heat-insulation layer 16, shell 17, non-pressure outlet open-type water chew 18, connecting plate 19, water flow switch 20, driving switch 21.

Fig. 1 to Fig. 5 is water flow switch 20, be made up of main body 1, cover plate 2, seal 3, impeller 4, spring or spring leaf 5, installation cover plate 6, microswitch 7, stationary contact 8, movable contact 9, terminal 10, what Fig. 1 Fig. 2 adopted is microswitch 7, Fig. 4 Fig. 5 be by contact and terminal directly on installation cover plate 6, the two function is identical with use, Fig. 1 Fig. 4 Fig. 5 is water route closed condition, and circuit disconnects; Fig. 2 be water in flow regime, the strength by water forces cover plate 2 to move, also simultaneously hydrodynamic reciprocating sealing part 3 and impeller 4, the pushing pin 11 promoted on microswitch, movable contact and stationary contact is combined, circuit turn-on; If closedown water route, then circuit disconnects; The shape of Fig. 4 cover plate 2 is different, and cover plate 2 has multiple hole, and when discharging water, promote cover plate 2 moves, water flows from hole; On the body 1, inlet channel and water outlet water channel are not straight-through, and cover plate 2 must be made to move water could circulate mutually; Due to water channel close time, the feed water inlet of main body 1 is automatically closed by cover plate 2, and stationary contact and movable contact in Fig. 4 Fig. 5, only illustrate one group in figure, and actual product can make many groups.

Fig. 6 is the electric heater structural representation of the quick electrothermal plate heating that water flow switch controls, water flow switch 20, driving switch 21, electric heating element 13 cooperating in figure, and driving switch 21, has rotary and button type structure, and the function of the two is identical; In figure, water flow switch 20 adopts microswitch 7, and according to the structure that Fig. 4 Fig. 5 makes movable contact be combined with stationary contact, function is identical; Described water tank 12 refers to the water stream channel be made up of hollow aluminum section and upper and lower end cap; Water flow switch 20 makes microswitch pushing pin 11, promotes movable contact 9 and contacts with stationary contact 8, now, determine that different electrothermal tubes is worked by driving switch 21; Guan Shui, circuit disconnects automatically.

Product in accompanying drawing, water temperature display can adopt digital-scroll technique or fuzzy display, and in figure, arrow is water (flow) direction.

Claims (1)

1. the electric heater that the quick electrothermal plate that water flow switch controls heats, is characterized in that: at inlet pipeline, water flow switch (20) is housed, and is used for controlling electrothermal tube circuit and is turned on or off, determine different electrothermal tube work or do not work by driving switch (21); In the main body (1) of water flow switch (20), the passage of water inlet and water outlet is not directly communicate, separated by cover plate (2), when having water flow, water can promote cover plate (2), promote seal (3) with impeller (4) simultaneously makes movable contact (9) contact with stationary contact (8), circuit turn-on, anhydrous flowing, circuit disconnects; Electric heating element (13) is that hollow aluminum section and upper and lower end cap form water stream channel, in the middle of hollow aluminum section, there is cross section to be heating wire that is circular or flat, high voltage withstanding, the resistant to elevated temperatures multilayer mica insulation board in two sides is isolated, make electric heating board type heater, on the two sides, outside of heater, with hollow aluminum section material, heater is clamped.