CN2145948Y - Multipolar plate electrothermal water heater having automatic close and liear control - Google Patents

Abstract

The utility model relates to a multipolar plate electrothermal water heater having automatic close and linear control, mainly comprising a case body, and a water heater component composed of a plate electrode component and an insulation plate component. The water heater component is horizontally arranged on the utmost upper part in the case body. The water inflow port in the case body is provided with an upper pore and a lower pore. The end of a water outlet device is provided with a water channel and an air passage. The water heater is also provided with a driving device connected with the insulation plate component to drive the insulation plate component to shift relative to the electrode plate.

Description

Multipolar plate electrothermal water heater having automatic close and liear control

The utility model relates in general to design and the structure that is exclusively used in the Water-heating shower system and supplies the immediately heating water heater of other application, more particularly, the utility model is the electric heater about a kind of immersion parallel-plate electrode, this water heater uses the heater block of installing in horizontal direction, close the shower of water control valve as long as the design of this water heater makes, just can exempt the overheated of water heater and need not powered-down with the water Evaporation Phenomenon.Thereby water heater just needn't use pressure activated switch expensive, that have big current rating.Utilization is arranged on the non-conductive or dielectric panel between the plate electrode and by means of mechanical device this insulation board is moved in or out, thereby can change input power and control water temperature.The input power of hot water apparatus of the present utility model can control linearly between minimum of a value and maximum.

The electric heater of general immersion uses parallel-plate electrode, and utilizes water as the electric current conductive medium, therefore can directly make the water heating.The size of current of passing through in the water that is heated depends primarily on three factors:

(1) conductance of water, size of current is directly proportional with it.Water can conduct electricity because contain dissolved impurity and mineral salt.Thereby the water of separate sources has different conductances.

(2) the direct effective area that contacts with water of pair of electrodes plate, size of current is directly proportional with it.

(3) distance between the pair of electrodes plate, size of current is inversely proportional to it.In other words, when this apart from increase, electric current just reduces; When the distance reduce, electric current just increases.

What the various water heaters for shower water heating usefulness of in decades, producing and selling used is the immersion parallel-plate electrode of positioned vertical.This water heater must use expensive derailing switch in order to close automatically, and this derailing switch is touched by pressure, has big current capacity.Other comparatively cheap design types then use manually operated switch.The problem of the water heater of this design type is: people must turn off this derailing switch earlier before turning off the shower of water control valve, otherwise water heater is with overheated and evaporate the water.Can cause like this accident by hot water scald accident.In addition, the water heater of being sold on the market today can not be with the input power of effective and efficient manner control power supply, unless use a kind of switchable many systems to electrode plate structure, wherein the plate electrode distance is fixed.

Use the major defect of many schemes to parallel-plate structure, need very big electric current exactly, reach more than several amperes.This need use selector switch device and many circuits of a costliness, so that the input power of conversion water heater effectively.Moreover the selector switch general ability is limited to the switching position of minority, and this causes the temperature control shelves number of shower of water very limited, and when hydraulic pressure is very low, though when minimum power setting the also overheated phenomenon of regular meeting's generation.

Switchable many another shortcomings to the parallel-plate water heater are the variations of the conductive characteristic of water.If the water of being supplied with government's water system is benchmark, then from the water of deep-well and shallow well extraction, its conductance is two times or even four times of said reference water source conductance.If by the designed water heater of the water at benchmark water source current capacity when the minimum setting value is 5 amperes, and when using the water supply of deep well and shallow well, this value will be respectively 10 amperes and 20 amperes.This designs water heater with regard to needs especially by the source of supplying water, and people need at first to determine the type of water, that a kind of water heater of decision installation then.

In view of above-mentioned commercially available shower heater has these problems and shortcoming, the purpose of this utility model is to provide a kind of shower heater, wherein use and simplify the scheme cheaply that reaches, can close automatically and needn't close shower heater, can avoid unexpectedly by overheated scald simultaneously with hand operated.

Another purpose of the present utility model, be the power of controlling the input shower heater with low-cost and flexible mode, water heater of the present utility model can be controlled input power linearly, its control range near null value to maximum, and need not to provide different water heaters for different water sources.

To achieve these goals, the utility model is presented as a kind of closing automatically and the multipole plate electric water heater of Linear Control, comprise: casing, substrate, lid, by a plate electrode assembly and water heater components, power switching device, water flow control valve, water inlet connector and delivery port connector and an inlet elbow and the exit bend that the insulation board assembly constitutes, it is characterized in that

Described water heater components flatly is installed in the topmost portion in the described casing;

The part that described casing combines with described inlet elbow is provided with upper opening and the following hole that connects tank wall; Described casing and described lid are provided with air duct and the water channel that connects tank wall and tegmental wall at the position that combines with described exit bend, described air duct is positioned at the top of described water heater components, described water channel is positioned at the below of described air duct, and they are joined mutually at common outflow hole;

Described electric heater also comprises: the spur gear that is meshed with the joining rack gearing of described insulation board assembly, and this rack gearing, one and the coaxial power transmission shaft that is connected of this spur gear and a framework that sets up this rack gearing and make it to slide thereon.

Other purposes of the present utility model and advantage can add the content of accompanying drawing by following detailed description and understand more and clear.

Figure 1A is a level to the schematic diagram of the water heater with five plate electrodes of installing, the fixed distance between battery lead plate wherein, thus and can be by the input of adjustable division board control power.Water heater by shown in derailing switch E be connected with L1 of supply line and L2.

Figure 1B is the schematic diagram with two plate electrode water heaters of two kinds of control input power modes, wherein show the adjusting of plate electrode distance, and the insertion amount that division board inserts between the plate electrode is regulated this dual mode.

Fig. 2 is the front view of the shower heater of the utility model preferred embodiment, and the enclosing cover of this water heater is removed, so that show the situation that is provided with of each parts.

Fig. 3 is the front sectional plane of water heater, and that shows the detailed structure of each parts and assembled condition and hot water machine sets up the shape and the control device of power.

Fig. 4 is the top view cutaway view of same water heater assembled condition, has wherein showed the power control device.

Fig. 5 A has shown that water heater is erected at the detailed situation in the shell; And Fig. 5 B is the detailed construction schematic diagram of five plate electrode water heaters.

Fig. 6 A has showed the effect of horizontal plate, and Fig. 6 B shows how input power is controlled by division board; Fig. 6 C has showed the effect that changes the plate electrode distance and control input power.

In each accompanying drawing, identical parts are to represent with identical numbering.Shown in Figure 1A, can see this close automatically and the multipole plate electric water heater of Linear Control be basically a kind of its battery lead plate along level to the water heater that is provided with, it is connected with power circuit L1 and L2 by the derailing switch E that represents among the figure.Can manually move wherein insulation board assembly 6 by a mechanical device, thereby make the power input obtain the control of orthoscopic.The employed another kind of the utility model is to regulate distance between the pole plate by a kind of mechanical device in order to the mode of control power input, and these two kinds of modes can be applied in the same water heater, shown in Figure 1B.Take the mode of these two kinds control power input, the utility model regardless of the type or the water source of water, and needn't design water heater applicable to various situations for the type of each water source or water especially.

Complete assembling situation as the shower heater of preferred embodiment of the present utility model is illustrated among Fig. 2.Its part comprises: whole water heater components A; Metal substrate B, each parts that connect mutually all is installed on this metal substrate in the water heater; Shower water outlet opening connector C; Brass material is made goes into water connector D, and the copper pipe 23 of this a connector D and a bending welds together, this copper pipe and plastic elbow 22 mutual tight fits; The exit bend 20 of plastics, the copper pipe 21 mutual tight fits of its end and a bending, the other end then with the mutual tight fit of delivery port connector C; One has been shown bright double-pole switch device E in Fig. 1, be installed on the derailing switch bearing apparatus of a metal; Have non-25 two leads 26 of being welded to connect, in order to see the termination 30(on derailing switch and the water heater shown in Figure 4) couple together; And a cable G and a cable installation fittings H.The ground connection of water heater is connected on crooked copper pipe 21 and the brazen water inlet connector by an earth connection I and realizes.

Fig. 3 and Fig. 4 have showed detailed structure and the assembling of water heater A, and wherein, parallel plate electrode water heater components 5 is horizontally fixed on the top that water heater is installed casing 1.One insulation board assembly 6 and a rack gearing 8 couple together by means of a flat head bolt 7, thereby can see Fig. 4 by the knob 29(that turn and power transmission shaft 10 link together) this insulation board assembly 6 is moved in or out, this power transmission shaft 10 and 9 coaxial connections of spur gear, spur gear 9 then drive rack gearing 8 slides it on framework 12.A lid 2 tightens together with casing 1 by bolt and nut 3, and suitably seal by rubber packing 4, a pith of lid 2 is air duct 14 and water channel 15, they are joined mutually at common outflow hole 16, lid 2 also as the framework of control device, on this framework, has externally threaded axle bush 27(and sees shown in Figure 4) supporting power transmission shaft 10, at this, also be equiped with the circle envelope 11 and the axle bush nut 28 of O shape as shown in Figure 4.Also be provided with a pin 32 of being made by non-corrosive material, be pulled out in axle bush in order to avoid power transmission shaft, another pith of lid is a discharge conection 19.On the pipe joint of this output, install the exit bend 20 of plastics in the mode of pressing solidly.

Fig. 5 A and 5B display water heater are erected at the details on the outer cover.The water heater assembly sets up and is fastened on the casing by means of braced wing 1B, and this braced wing is stained with on the length of whole pole plate and is distributed.Liner 1C is firmly fixing pole plate, keeps the distance between the pole plate.Be covered with two slit pore 1A that establish for the termination 30 of as shown in Figure 4 water heater, and it is sealed up resistant to elevated temperatures epoxide resin material 31(Fig. 4).

Be provided with level to the effect of pole plate can show by Fig. 6 A, when the shower of water control valve is opened, water (by the representative of the linearity arrow among the figure) just enters in the casing by upper and lower hole 17 and 18, and water heater can be conducted heat comprehensively, and necessary water-filling is until the height of U in the casing.Reach this stage, highly locate to be provided with air duct 14 at U, this air duct 14 is positioned on the pole plate topmost, in order that the air that is trapped in the inside can be come out, (these air are by arrow representative crooked among the figure), because passage 14 is more much smaller than passage 15, most hot water is to dirty and see shown in Fig. 5 A with cistern 13() in water mix.When water constantly flows, temperature reaches stationary value, the water heater electric current that this temperature value is controlled by the setting of water influx and insulation board (this insulation board be omitted in Fig. 6 A and not shown) position decides, thereby the input of the power of the Position Control water heater of insulation board.

Upper opening 17 plays an important role in the set-up mode of horizontal plate, after water is heated, discharge being trapped between the level board and air that be dissolved in the water, thereby this conductance that will influence water reduces the electric current of water heater.The water that enters upper opening 17 forms a kind of end stream, drives and delivers to passage 14 thereby will be trapped in air between the pole plate, and this effect maintains the electric current that is set by power control system of the present utility model.

When closing the shower of water control valve, water Fast Heating between the plate electrode heats up until boiling point, and wherein a part of water becomes steam, produces pressure and hot water is down driven the warm water that makes it with cistern 13 mixes, and flow out until outlet hole 16 from passage 15.When steam mixes with warm water and when disappearing, it causes vacuum in the heating casing, and draw air from the outside by hole 16 and passage 14.The sucked back water heater of a part of water in the outlet conduit, but can not reach the U height level.It is heated again, and wherein a part becomes steam, and build-up of pressure down drives pressure, and mixes with the water of cistern, is discharged from then.This process circulates always, under water level drops to L height in the water heater.So water heater is turned off automatically.Under the situation of this setting, the steam heating casing of will not overflowing, because water vapour always mixes with water, and the temperature of the water that comes out from water heater can not reach very high temperature, because the pondage in the cistern is three times of pondage of water heater part.Yet the present water temperature of the water in the cistern is more higher than steady-state value.When the shower of water control valve is opened again, there is the bigger water yield to flow through hole 18, because this hole is bigger than hole 17, the water that enters will mix with the hot water of cistern, to reduce temperature, comes out from water heater then.The water temperature of shower water is just higher than former temperature, but turns back to steady-state value gradually.

The basic role of insulation board control power is used in Fig. 6 B explanation.Because water is the conduction medium, electric current is directly proportional with the effective area of plate electrode X and Y, and plate electrode X is directly to contact with water with Y here.Yet being insulated the plate electrode position that plate blocks can not conduct, and the conduction at uncrossed position is strengthened, shown in arrow among the figure.By the interrupted scope of increase and decrease electrode, can increase and decrease electric current linearly.

The method of this control current power is being effectively aspect the control water temperature, because it is linear.Another kind of control water heater power supply input power method is to realize by the distance of controlling X plate and Y plate, shown in Fig. 6 C.When anode-cathode distance was elongated, electric current reduced, but is not linear relationship.This scheme is in order to change the input power of water heater when using dissimilar water or water source, in order to avoid for designing a kind of water heater in the water or the water source of each type.Use above-mentioned two kinds of schemes, water heater is applicable to various types of water.

Claims (1)

1, a kind of closing automatically and the multipole plate electric water heater of Linear Control, comprise: casing, substrate, lid, by a plate electrode assembly and water heater components, power switching device, water flow control valve, water inlet connector and the delivery port connector that the insulation board assembly constitutes, and inlet elbow and exit bend, it is characterized in that

Described water heater components (5) flatly is installed in the topmost portion of described casing (1);

The part that described casing (1) combines with described inlet elbow (22) is provided with upper opening (17) and the following hole (18) that connects tank wall, described casing (1) is provided with air duct (14) and the water channel (15) that connects tank wall and tegmental wall with described lid (2) at the position that combines with described exit bend (20), described air duct (14) is positioned at the top of described water heater components (5), described water channel (15) is positioned at the below of described air duct (14), and they are joined mutually at common outflow hole (16);

Described electric heater also comprises: the spur gear (9) that is meshed with the joining rack gearing of described insulation board assembly (6) (8), and this rack gearing (8), one and the coaxial power transmission shaft that is connected of this spur gear (9) (10) and a framework (12) that sets up this rack gearing (8) and make it to slide thereon.

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