CN2349660Y - Water flow control electromagnetic switch for electric water-heater - Google Patents

Abstract

The utility model relates to a water flow control electromagnetic switch for an electric water heater, which is formed by that a housing body, a water inlet, a water outlet, a cylindrical magnet, a dry reed pipe and a seal rubber ring are connected. The position and the connective relation of the utility model are that the water inlet is arranged at the bottom of the housing body, the water outlet is arranged at the middle part of the housing body, the cylindrical magnet is arranged in an inner chamber of the housing body, the height of the inner chamber is bigger than the height of the magnet for more than two times, the dry reed pipe is arranged at the top of the housing body and is placed with the magnet mutually and vertically, both ends of the dry reed pipe is connected with a relay or controlled silicon, and a vertical device of the switch is used. The utility model has the advantages of simple structure, low cost, convenient manufacture and use, safety, free from the influence of water pressure and suitable for all electric water heaters.

Description

Electric heater current control electromagnetic switch

The utility model is a kind of electric heater current control electromagnetic switch, belongs to the electric heater manufacturing technology.

Existing instant electric water heater's heating power supply switch generally is water-electricity linkage control, standard control and back standard control dual mode before being divided into: preceding standard is that water valve is installed in water inlet, when closing water valve, water heater heating inner bag internal pressure is an atmospheric pressure, and hydraulic pressure switch disconnects, stops heating; Back standard control is that water valve is installed in delivery port, and when closing water valve, current stop, and current control electronic switch disconnects, and stops heating.But water heater heating this moment inner liner pressure is a water supply pressure power.As seen, the former control is hydraulic pressure control, and the latter is the current controls.At present, the instant electric water heater almost all adopts hydraulic pressure control mode (preceding standard) both at home and abroad, be characterized in, technology and simple in structure, cost is low, but lacks fail safe, in case the water valve mistake is contained in delivery port or stops up for some reason, because this moment, hydraulic pressure switch was failure to actuate, heating just continues to carry out, and causes easily to burst, scald, even electric shock accidents or when hydraulic pressure was low, water heater can't use.Therefore, there is the potential safety hazard that can't eliminate in preceding standard control mode.And current control (back standard) electronic switch prior art, what adopted is the control mode of electromagnetic induction (thereby or change winding inductance quantity change frequency of oscillation), and circuit complexity, reliability are low, and usually also there is hidden danger in Control Failure.

The purpose of this utility model is exactly easily to cause water heater to burst, scald people, poor stability and water heater can't use when hanging down when hydraulic pressure is crossed for the control mode that overcomes and solve existing instant electric water heater's heating power supply switch exists, or the shortcoming and the problem of low, easy to control malfunctioning, the uneasy congruence of circuit complexity, reliability, research and design is a kind of simple in structure, safe and reliable, can guarantee can not close the electric heater current control electromagnetic switch that adds source current automatically when low having current or hydraulic pressure to cross.

The utility model is realized by subordinate's structure technology scheme: the structural representation of electric heater current control electromagnetic switch as shown in Figure 1, it is connected and composed jointly by housing 1, water inlet 2, delivery port 3, cylinder-shaped magnet 4, tongue tube 5 and O-ring seal 6, and its mutual alignment and annexation are; Water inlet is arranged on the bottom of housing 1 and is connected with the housing inner room, delivery port 3 is arranged on housing 1 middle part and is connected with the housing inner room, cylinder-shaped magnet 4 places the cylinder shell inner room of cylindrical shell 1, the cylinder shell inner room height of housing 1 is greater than more than two times of cylinder-shaped magnet 4 height, the height of cylinder-shaped magnet 4 should be slightly larger than the width of cylindrical shell inner room, tongue tube 5 is installed on the top of housing 1, and should make the axis and the vertical placement mutually of the interior chamber axis of cylindrical shell of tongue tube, the tongue tube ends A, B and relay or controllable silicon join, band tongue tube hole, the middle part is integral with bringing that the mouth of a river 2 and externally threaded lower housing portion are placed O-ring seal 6 by the centre into and spin by internal and external threads on the housing of delivery port 3 and internal thread; This switch answers vertical means to use, be that cylindrical shell inner room axis is vertical with horizontal plane, water flow pressure can be cylinder-shaped magnet 4 jack-up, and during no current, cylinder-shaped magnet 4 can successfully be done the movement of falling object by own wt and fall back to the inner room bottom position of original cylindrical shell 1.The action principle of this switch is; When current when water inlet 2 enters this switching device, cylindrical shape magnet 4 in the housing 1 is risen by jacking, the magnet 4 and the distance of tongue tube 5 are dwindled, magnetic force makes the normally opened contact closure in the tongue tube, thereby can connect by the heating power supply that relay outside this switching device or controllable silicon make electric heater, electric heater begins heating, when water valve cuts out (current are dammed), cylinder-shaped magnet 4 drops to housing 1 inner room bottom by own wt, and the distance between magnet 4 and the tongue tube 5 increases, and magnetic force reduces, make the contact in the tongue tube 5 be returned to normally open from closure state, and then heating power supply is disconnected, and stop power supply, stop heating.Because tongue tube directly provides switching signal, need not change, so easy and safe and reliable.

The utility model compared with prior art has following advantage and beneficial effect: no matter (1) is preceding standard control or back standard control, all can adopt the utility model current control electromagnetic switch (can replace hydraulic pressure control type electronic switch), no matter what's wrong for electric heater, as long as close water valve, this switch will be cut off the electricity supply immediately, effectively prevent to heat phenomenons such as inner bag, dry combustion method burst and take place, guarantee the unlikely damage of water heater; (2) when delivery port stops up (delivery port dress water valve or obstruction for some reason), this switch can cut off heating power supply immediately, and the water that prevents to rest in the heating inner bag is blasted because of continuing the heating overvoltage, guarantees safety; (3) this switch is practical, can replace hydraulic pressure switch to use.Hydraulic pressure switch requires strict to tap water pressure, when hydraulic pressure is low, just can't open switch, and water heater can't normally use.The utility model can overcome this shortcoming, and no matter the hydraulic pressure size all can normally be used; (4) instant electric water heater who adopts the utility model technology to produce can realize a tractor serves several purposes at delivery port adjunction three-way valve, and promptly have a bath gondola water faucet, washbowl, bathtub use a water heater simultaneously; (5) this switching device property simple in structure, easily manufactured, with low cost, esy to use, safe and reliable height, be applicable to all instant electric water heaters.

Below Figure of description is further specified as follows: Fig. 1 is electric heater current control electromagnetic switch structural representation.Among the figure: 1 is that housing, 2 is that water inlet, 3 is that delivery port, 4 is that cylindrical electromagnet, 5 is that tongue tube, 6 is O-ring seal.

The utility model is because simple in structure, and it implements also to be very easy to.Its execution mode can be as follows: (1) is by the cylindrical shell 1 of this switch of design shown in Figure 1, water inlet 2, delivery port 3 and place the hole of tongue tube 5, can adopt as the non-magnet material of engineering plastics etc. and divide going up the middle part and bringing the mouth of a river 2 into and externally threaded bottom two parts are made by the compression moulding method of band tongue tube hole, delivery port 3 and internal thread circular cylindrical shell; (2) cylinder-shaped magnet can constitute with cylindrical soft iron and thin cylindrical magnetic king socket, cylinder-shaped magnet 4 is put into housing 1 inner room, then the last central enclosure of band tongue tube hole, delivery port 3 and internal thread with bring the mouth of a river 2 and externally threaded lower housing portion into and spin by centre placement O-ring seal 6 and by internal and external screw thread and be integral; (3) tongue tube can be purchased the tongue tube of Φ 2～Φ 3 various models, and puts in the hole at housing 1 top, and its two ends are connected with relay or controllable silicon, has so just implemented the utility model preferably.

Claims (1)

1, a kind of electric heater current control electromagnetic switch, it is characterized in that: it is by housing (1), water inlet (2), delivery port (3), cylinder-shaped magnet (4), tongue tube (5) and sealing ring 6 connect and compose jointly, its mutual alignment and annexation are: water inlet is arranged on the bottom of housing (1) and is connected with the housing inner room, delivery port (3) is arranged on housing (1) middle part and is connected with the housing inner room, cylinder-shaped magnet (4) places cylindrical shell (1) cylinder shell inner room, the cylinder shell inner room height of housing (1) is greater than more than two times of cylinder-shaped magnet (4) height, the height of cylinder-shaped magnet (4) is slightly larger than the width of cylindrical shell inner room, tongue tube (5) is installed on the top of housing (1) and makes the axis and the vertical placement mutually of the interior chamber axis of cylindrical shell of tongue tube, the tongue tube ends A, B and relay or controllable silicon join, band tongue tube hole, on the housing of delivery port (3) and internal thread the middle part with bring the mouth of a river (2) and externally threaded lower housing portion into by centre placement O-ring seal (6) and in passing through, external thread rotary is connected into one; This switch answers vertical means to use, be that cylindrical shell inner room axis is vertical with horizontal plane, water flow pressure can be cylinder-shaped magnet (4) jack-up, during no current, cylinder-shaped magnet (4) can successfully be done the movement of falling object by own wt and fall back to the inner room bottom position of original cylindrical shell (1).

Images