CN86207490U - Electric water heater - Google Patents

Abstract

The utility model discloses an electric water heater which is composed of a water discharging appliance, a connector, a heating element, a spacing ring, a running water pipe, a temperature adjusting switch with the indication, and a temperature control switch. The heating element is submerged in water, the electrical energy can be directly changed into the heat energy after the power is connected, and the heat energy is absorbed by the water, so the loss is small and the thermal efficiency is high. The heated water with the electric current accompanied with the lower electric voltage directly passes through 'ground' by the water pipe, and additionally, the spacing ring can ' filter ' the slight current leakage, so the discharge hot water has not the electricity. The temperature of water discharged from the electric water heater is adjustable. When the electric water heater is arranged in a running water tap, the power can be small, and therefore, the power consumption is few. Besides, the electric water heater can be used as a shower replacing an electric heating shower.

Description

Electric water heater

The utility model is the electric heater that utilizes electric energy that water is heated about a kind of.

Winter, the water of emitting in the tap was sharp cold in the place of no boiler heat supplying.Many methods that obtain hot water have been designed for improving the living condition, as adopting mode or the described method of China patent application CN85201132U of 1985 the 7th phases of " household electrical appliance " magazine " electric heating shower ", but because the structure of these heaters is bigger, fixedly live wire and zero line during wiring, in case it is just dangerous that external circuit changes, therefore inconvenience is used in the service water tap.

The purpose of this utility model is to introduce a kind of electric heater, can make the adjustable hot water of supply temperature in the tap of average family under profile and physical dimension are not made the situation of very big change.

In brief, the utility model improves at existing tap and the close first end of the fire hose of installing of connector and running water pipe inside; Promptly heating element heater is set at tap connector (as threeway, elbow, directly first-class) and running water pipe inside, as heating wire or metal pole piece etc., heating element heater can be made into immersion or sealed, no matter the two ends of which kind of form heating element heater, promptly outside water inlet and the water outlet, be equipped with netted, thread or other can make current freely can cut off the metal cage ring of electric current again; In connector or the first end of the fire hose, the same electric leakage cage ring of shape also is housed, these cage rings are all wanted closely to contact with tube wall, and when heating element heater was connected power supply, the water between the cage ring just was heated, and just emitted hot water after tap is opened.Two statures of heating element heater are connected with input lead between two cage rings, and begin from the junction, the input lead wrapped with insulation, and seal with encapsulant, press water can not be oozed out along the slit of lead inside, lead is then drawn by the joint of connector, and externally links to each other with temperature regulating switch, realizes water temperature is regulated with this.Light-emitting component is housed in the temperature regulating switch, and whether indicating circuit is connected; And in circuit, be connected in series diode, when diode inserts, change the low temperature shelves over to; Also be provided with the temperature control switch in addition, the restriction coolant-temperature gage is too high, if increase retaining, can increase tap.

The described electric heater of the utility model has following advantage: except that the simple volume of structure is little; because the heating original paper is placed in the pipeline; thermal efficiency height; and there is the cage ring that closely contacts with tube wall at two ends; the heating wire (or other heater elements) that is located at wherein is not immersed in the water although there is insulating protective layer; connecting under 220V voltage and a few peace current conditions; the water that flows is through actual measurement; voltage is not high; moreover the contact area of water and running water pipe is bigger, therefore can make electric current in the water logical smoothly " ", thus guarantee that the water that flows out is " zero " current potential; simultaneously when water flows out and tap and connector place; also being provided with the electric leakage cage ring, so have duplicate protection, then is triple protection for the heating element heater with sealing; in addition; the design, connect " " all realize in that running water pipe is inner, avoided owing to externally connect " "; may produce corrosion; the loosening danger that causes resistance to increase and bring, and need not consider the both positive and negative polarity problem.Owing to adopt the diode temperature adjustment, when inserting diode, can reduce the surface loading of heating, the service life of improving heating greatly.Simultaneously, because the heated time of water is longer, therefore under the less situation of power ratio, water heats up higher.

Fig. 1 is the electric heater schematic diagram that conforms with subject matter

Fig. 2 is a kind of embodiment

Fig. 3 is another kind of embodiment

Fig. 4 is a line map

Below with reference to Fig. 1 to Fig. 4, the present invention is elaborated.

(1) is the water outlet apparatus in Fig. 1, and this figure is the Rotary Water tap, also press type or other forms, the also interchangeable shower nozzle (as Fig. 2) of dressing up; (2) be connector, in order to connect running water pipe and water outlet apparatus, this figure adopts threeway, utilize threeway to become multiple pattern such as the bottom-up outflow of hot water (Fig. 1, Fig. 3) by device, also can from up to down flow out, or, laterally flow out from right from a left side, (3) be cage ring, guarantee from many aspects electric current well logical " ", make the water potential of outflow be " zero ", be perfectly safe with assurance, be placed in the cage ring of running water pipe termination, should dash the hole in the water pipe termination and prevent to be gone out by water; (4) be the input line, link to each other with heater element in cage ring, input lead (and lead of temperature control switch) must be drawn by the connector inner chamber, and the place of drawing seals, drawing direction can be from an end of other part (2), also can be from the middle part or any suitable position; (5) be heater element, this figure is depicted as the heating wire of immersion, also can make sealedly, promptly adopts the method for sealing and insulation that heating wire and water are separated; Heater element also available metal is made pole piece, separates with insulant between two pole pieces, and is porose or have breach on the pole piece, and water can be passed through; Can also adopt other patterns; (6) be running water pipe, in heater element just is placed in; (7) be insulating sleeve, available heat-resisting, insulation, nontoxic pottery or nonmetallic materials are made, and its effect is to prevent that the heating wire that exposes from contacting with the running water tube wall, can be made into discontinuous or interconnection system, and make the heating element heater can be crooked on demand; (8) being insulation tube, is that the two ends of heater element are spaced from each other, and (9) have the temperature regulating switch of indication, and its effect is that the temperature of water is regulated on demand, and tells the user powered-down when water not; (10) tension nut, (11) insulation protective jacket, (12) stopper, (13) seal washer, (14) threaded cover, (15) electric leakage cage ring; (4), be gapless between (11), (14), should reach the requirement of sealing; The above has constituted complete electric heater.

Fig. 2 is a kind of embodiment, in this example, has also increased temp control switch (20) other part in Fig. 1, this is a kind of automatic temp controller, forget that after using up water when cutting off the electricity supply, water is heated continuing, and reaches very high temperature, the possible skin ambustion of water this moment, this kind switch has been installed, and when reaching uniform temperature (as 50 ℃), bimetal leaf separates, circuit is automatic disconnection then, can connect again when water temperature reduces circuit; This switch is normally closed being made up of can (24), insulating barrier (21), bimetal leaf (22), mineral oil (23), seal plug (25), lead (26).The temperature control switch also can be made mechanical type, and will be contained in outside the connector this moment, adopts the mechanical linkage formula to make to be sealed in the capsule two sheet metals open close, cuts off or connects circuit and reach temperature control purpose (not shown).The apparatus that discharges water in this example is a shower nozzle, and various forms of taps also can change the outfit simultaneously.

Fig. 3 is another kind of embodiment, tap installs some additional and organizes part separately and form " electric heater " among the figure, it is the temperature regulating switch (9) of heating element heater (5), band indication, temp control switch (20) constitutes an integral body with tap, heating element heater is contained in tap to running water pipe, and input lead (4) is drawn by tap.

Fig. 4 is a line map, and (27) shown in the figure are toggle switch, and (28) are diode, and (29) are light-emitting component and resistance.When toggle switch (27) is allocated to 2 grades when connecting with diode (28), circuit load reduces by half, and is the low temperature shelves; Be the high temperature shelves when being allocated to 3 grades, 1 grade is neutral gear, circuitry cuts; Light-emitting component (29) adopts the also available neon tube of light emitting diode.

By the product that the design makes, the water tap of nearly all family all can be reequiped, And profile and position are substantially constant; Except family was suitable for, hotel, hairdressers' room, restaurant and all had tap, have the place of power supply all can be general; Because tap is various informative, Figure 1 shows that rotaryly also have the visual different situations such as press type to do little change to get final product; The product of producing by the design in addition can directly make shower and use, so the scope of application is very wide.

Claims (3)

1, a kind of electric heater, mainly have the temperature regulating switch (9), temp control switch (20) of indication and general part (10) to (15) in addition etc. and form, it is characterized in that by the apparatus that discharges water (1), connector (2), cage ring (3), input lead (4), heater element (5), running water pipe (6), insulating sleeve (7) (8):

Heater element (5) is installed in the running water pipe (6);

There is insulating sleeve (7) that it is not contacted mutually between heater element and the tube wall; There is the cage ring (3) that closely contacts with the running water pipe tube wall at the two ends of heater element (5), in the delivery port cage ring (15) of leaking electricity in addition.

Two joints of heating element heater (5) link to each other with input lead (4) in cage ring (3), and begin from the junction, the input lead wrapped with insulation, and the encapsulant mouth is arranged.

2, electric heater according to claim 1 is characterized in that regulating water temperature by the temperature regulating switch that has indication (9), and it is inner except that light-emitting component (29) is arranged, and diode (28) is serially connected in the circuit in addition.

3, electric heater according to claim 1 is characterized in that temp control switch is arranged (20), and this switch can be arranged on the inside of connector (2) and running water pipe (6).

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