CN2788080Y

CN2788080Y - Electric water heater

Info

Publication number: CN2788080Y
Application number: CN 200520054417
Authority: CN
Inventors: 何金魁
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-01-27
Filing date: 2005-01-27
Publication date: 2006-06-14
Anticipated expiration: 2015-01-27

Abstract

The utility model discloses an electric water heater, which comprises a water storing container, a cold water inlet pipe, a hot water outlet pipe and a heating device. The utility model has the technical main points that a water inlet valve is arranged on the cold water inlet pipe, the inlet valve comprises a valve body, a water inlet end, a valve chamber and a water outlet end, a water current sensing assembly is arranged in the valve chamber, the water current sensing assembly comprises a valve core, a magnet which is arranged in the valve core, and a restoring spring which is arranged on the upper end of the valve core, a water current passage with a small hole diameter is arranged at the middle of the valve chamber, the valve core is arranged in the valve chamber, the part of the valve core is penetrated through and arranged in the water current passage, a water current gap is arranged between the valve core and the water current passage, and the sealing end surface of the valve core can be sealed with the end part of the water current passage. The utility model overcomes the defect of the prior art to provide the electric water heater which has the advantages of simple structure, low cost, and exact and quick switch.

Description

A kind of electric heater

[technical field]

The utility model relates to a kind of water heater, especially relate to a kind of two heaters that have, wherein the heater of preheating is arranged in the bottom of water storage bag, and the heater of Fast Heating is arranged in the top of water storage bag, and single gallbladder-heat hydrophone that heater can switch operating.

[background technology]

A kind of electric heater that combines water storage type and instant electric water heater's advantage is arranged now, and operated by rotary motion is useful on the heater and the heater that is used for Fast Heating of preheating in the water storage bag of this water heater.At first, the heater that is used for preheating preheats the cold water of new injection, when being heated to design temperature, cuts off described heater, enters keeping warm mode; If open the hot water tap, cold water will inject, and at this moment, switching device shifter just switches, and is used in the heater work of Fast Heating, makes lower powered water storage type electric heater obtain hot water apace.

Also there are some shortcomings in above-mentioned water heater:

(1) prevent the lost structure of heat for making water water storage bag in be rapidly heated, reduce scattering and disappearing of heat, must being provided with the heater of Fast Heating outside, this complex structure, difficulty of processing is big, cost of manufacture is high;

(2) when cold water injects, in order to allow the heater work of Fast Heating, must be provided with switching device shifter, if adopt circuit control, control circuit is mostly similar, but the current sensing valve is just inequality, and existing current sensing valve is function singleness mostly; Water heater is higher and be in unsafe condition in order to take precautions against the water heater internal pressure, and safety valve must be installed, and existing safety valve also is a function singleness; Existing water heater is to adopt two independent valves in order to realize this two functions mostly, can cause shortcomings such as manufacturing cost height like this;

During (three) owing to the inner bag retaining, when water is added to water inlet pipe above the heater of Fast Heating, air again can not arranged, pressure is increasing in the inner bag, and inner bag just holds not full water, and existing for this reason water heater mostly adopts at last courage top and has steam vent, after holding full water, turns off in last courage steam vent again, like this, troublesome poeration also causes getting rusty of outer cover of water heater easily after water is excessive.

The utility model has carried out useful improvement in order to overcome above shortcoming.

[utility model content]

The utility model has overcome the deficiencies in the prior art, a kind of efficiency of heating surface height, simple in structure, low cost is provided, has switched electric heater rapidly and accurately.

In order to solve the technical problem of above-mentioned existence, the utility model adopts following technical proposal:

A kind of electric heater, comprise water storage bag, cold water inlet, hot water outlet pipe, heater, on the described cold water inlet water intaking valve is housed, water intaking valve comprises valve body, water inlet end, valve pocket, water side, induction current assembly is housed in valve pocket, and induction current assembly comprises spool, be contained in magnet in the spool, be contained in the back-moving spring of spool upper end; Be provided with the less water stream channel in aperture at the valve pocket middle part, spool is arranged in the valve pocket, and partly is set in the water stream channel, the current slit is arranged between spool and the water stream channel, and the water shutoff end face of spool can seal mutually with the end of water stream channel;

Aforesaid a kind of electric heater also is provided with pressure-releasing chamber and pressure release passage in the described valve body, pressure release passage is communicated with pressure-releasing chamber with valve pocket, the pressure release assembly is housed in pressure-releasing chamber, and the pressure release assembly includes axle, axle holder, compression spring; Axle is contained on the holder, and the front end of axle is provided with on the end face that sealing block, sealing block can withstand on pressure release passage the pressure release passage sealing, is with compression spring on axle; Being provided with pressure relief opening on pressure-releasing chamber is in communication with the outside;

Aforesaid a kind of electric heater, described heater include the heater that is used for preheating of water storage bag inner bottom part setting, the heater that is used for Fast Heating of water storage bag inner top setting;

Aforesaid a kind of electric heater, the heater of described Fast Heating comprises base, heating tube, heat insulation tube, base is fixed on the water storage bag wall, be fixed with heating tube, heat insulation tube on the base, and heat insulation jacket casing is outside heating tube, heat insulation tube is connected with the hot water outlet pipe who passes base, and heat insulation tube is communicated with into water bend pipe away from the tail end of base, and the opening of water inlet bend pipe extend into the water storage bag top;

Aforesaid a kind of electric heater, described axle is connected with handle.

The utility model compared with prior art has following advantage:

1, the heat insulation tube of this electric heater is a single layer structure, and simple in structure, handling ease, cost of manufacture are low, more satisfy the needs in market;

2, being provided with of water intaking valve switched accurately, reduced out of order probability, also saved cost simultaneously, and it is also convenient to install;

3, the bend pipe setting of this water heater, it is discontented and improved the efficiency of heating surface to have solved the water storage bag retaining, and in the service life of yet having improved water heater, bend pipe does not need the precious metal of similar copper and so on simultaneously, does not increase extra cost yet;

4, compared with prior art, the water heater of same volume, hot water effluent's amount is more; Water is through the fully heating of heat insulation tube, and efficiency of energy utilization is higher, can use two heaters during winter, and just can help energy savings only with the heater of Fast Heating summer.

[description of drawings]

Fig. 1 is a Facad structure schematic diagram of the present utility model;

Fig. 2 is a side structure schematic diagram of the present utility model;

Fig. 3 is the profile of water intaking valve;

Fig. 4 is the profile of spool;

Fig. 5 is the vertical view of spool.

[specific embodiment]

Below in conjunction with the accompanying drawing and the specific embodiment the utility model is described in further detail:

The utility model comprises water storage bag 1, cold water inlet 2, hot water outlet pipe 3, and the water storage bag inner bottom part is provided with a heater 4 that is used for preheating, and the water storage bag inner top is provided with a heater 5 that is used for Fast Heating; The heater 5 of Fast Heating is fixed on water storage bag 1 wall and extend in the water storage bag, it comprises base 51, heating tube 52, heat insulation tube 53, be fixed with heating tube, heat insulation tube on the base, and heat insulation jacket casing is outside heating tube, heat insulation tube 53 is connected with the hot water outlet pipe 3 who passes base, heat insulation tube 53 tail ends away from base are communicated with into water bend pipe 54, and the opening of water inlet bend pipe 54 extend into the water storage bag top.

This electric heater holds full water all the time in water storage bag, the heater of preheating is heated to cold water the temperature of setting earlier, and control circuit cuts off the heater of preheating then.When opening hot water, when hot water flowed out from the hot water outlet pipe, cold water can automatically inject, and the control circuit that this electric heater is provided with can be sensed the current inflow and make the heater work of Fast Heating, thereby makes preheating water can bring up to the needed by human body water temperature rapidly; When turning off hot water, cold water also stops to flow into, and control circuit cuts off the heater of Fast Heating.Control circuit is connected the heater of preheating simultaneously, allows water temperature be heated to predetermined temperature.

The setting of heat insulation tube is only to enter the water in the heat insulation tube and be not that the water of whole water storage bag heats by heater in order to make, and reduces the scattering and disappearing of heat of heated hot water simultaneously.The setting of heat insulation tube bend pipe is in order to allow the air in the water storage bag drain, thereby solves the problem that the water heater water storage bag can not hold full water; Simultaneously, mostly at the water storage bag top, the hot water that the setting of bend pipe also helps after the preheating enters into the further heating rapidly of heat insulation tube, has improved the efficient of heating after the hot water convection current after the preheating.

Water intaking valve 6 is housed on cold water inlet 2, and water intaking valve 6 has into water cut-out and pressure release function.

Water intaking valve 6 comprises valve body 610, water inlet end 611, valve pocket 612, and induction current assembly 614 is equipped with in water side 613 in valve pocket 612, and induction current assembly comprises spool 615, be contained in magnet 616 in the spool, be contained in the back-moving spring 617 of spool upper end; Be provided with the less water stream channel in aperture 618 at the valve pocket middle part, spool 615 is arranged in the valve pocket, and partly is set in the water stream channel, and current slit 619 is arranged between spool and the water stream channel, and the water shutoff end face 620 of spool can seal mutually with the end 621 of water stream channel, and the water inlet of water intaking valve is cut off.Be with sealing ring 622 on the water shutoff end face of spool, 617 of back-moving springs are supported by the packing ring 623 that is located on the valve body 610.

When opening hot water, because hot water outflow back valve core upside A hydraulic pressure diminishes in the water storage bag, spool upside A and following lateral pressure B are with regard to balance no longer, cold water hydraulic pressure just promotes spool and moves up, the sealing ring that spool is with outward also moves up, and cold water just can flow into the water storage bag of water heater from the current slit; Simultaneously, magnet in the spool also moves up, the outer sensing element (not shown) of the relative water intaking valve of magnet just does relative motion, because sense element senses arrives the variation in magnetic field, the control circuit at sensing element place just orders about the heater work of Fast Heating; When turning off hot water, the pressure balance of spool upside A, downside B, because the effect of spool upper spring, spool down moves and resets, the relative motion of magnet is made a response sensing element in the spool, thereby cuts off the heater of Fast Heating.

Also be provided with pressure-releasing chamber 630 and pressure release passage 631 in valve body 610, pressure release passage 631 is communicated with pressure-releasing chamber 630 with valve pocket 612, pressure release assembly 632 is housed in pressure-releasing chamber 630, and pressure release assembly 632 includes axle 633, axle holder 634, compression spring 635; Axle 633 is contained on the holder 634, and the front end of axle is provided with on the end face that sealing block 636, sealing block 636 can withstand on pressure release passage 631 pressure release passage 631 sealings, is with compression spring 635 on axle 633; Being provided with pressure relief opening 637 on pressure-releasing chamber is in communication with the outside.Outer end at axle can also be connected with operating grip 638.

When pressure anomaly in the water storage bag of water heater raise, the water pressure pushing sealing block reached and axially retreats, thereby sealing block and pressure release passage are no longer sealed, and water under high pressure flows out from pressure relief opening; When pressure recovers just often, spring impeller-hub and sealing block again resets.Certainly, we also can come pressure release by the manual operation handle.

The control circuit of this water heater all adopts the conventional design of field of water heaters, and the utility model does not make improvements, and has not been described in detail at this.

Claims

1, a kind of electric heater, comprise water storage bag (1), cold water inlet (2), hot water outlet pipe (3), heater, it is characterized in that being equipped with on the described cold water inlet (2) water intaking valve (6), water intaking valve comprises valve body (610), water inlet end (611), valve pocket (612), water side (613), induction current assemblies (614) are housed in valve pocket, and induction current assembly comprises spool (615), be contained in magnet (616) in the spool, be contained in the back-moving spring (617) of spool upper end; Be provided with the less water stream channel in aperture (618) at the valve pocket middle part, spool is arranged in the valve pocket, and partly be set in the water stream channel, current slit (619) is arranged between spool and the water stream channel, and the water shutoff end face (620) of spool can seal mutually with the end (621) of water stream channel.

2, a kind of electric heater according to claim 1, it is characterized in that also being provided with in the described valve body (610) pressure-releasing chamber (630) and pressure release passage (631), pressure release passage is communicated with pressure-releasing chamber with valve pocket (612), pressure release assembly (632) is housed in pressure-releasing chamber, the pressure release assembly includes axle (633), axle holder (634), compression spring (635); Axle is contained on the holder, and the front end of axle is provided with on the end face that sealing block (636), sealing block can withstand on pressure release passage (631) the pressure release passage sealing, is with compression spring on axle; Being provided with pressure relief opening (637) on pressure-releasing chamber is in communication with the outside.

3, a kind of electric heater according to claim 1 and 2 is characterized in that described heater includes the heater that is used for preheating (4) of water storage bag inner bottom part setting, the heater that is used for Fast Heating (5) of water storage bag inner top setting.

4, a kind of electric heater according to claim 3, the heater that it is characterized in that described Fast Heating comprises base (51), heating tube (52), heat insulation tube (53), base is fixed on the water storage bag wall, be fixed with heating tube, heat insulation tube on the base, and heat insulation jacket casing is outside heating tube, heat insulation tube is connected with the hot water outlet pipe who passes base (3), and heat insulation tube is communicated with into water bend pipe (54) away from the tail end of base, and the opening of water inlet bend pipe extend into the water storage bag top.

5, a kind of electric heater according to claim 2 is characterized in that described axle (633) is connected with handle (638).