CN2821472Y - Closed micro pressure water storage water heater - Google Patents

Abstract

The utility model relates to a sealing type micro-pressure water storage water heater, which has the advantages of simple structure, high reliability and high control precision. The utility model comprises a water tank, a heat source assembly and a water outlet valve. The utility model is characterized in that the water tank is communicated with an expander, and a plane sliding valve of which the opening and the closing states are free from the water pressure of tap water is connected between the water tank and a running water pipe; the opening and the closing states of the plane sliding valve is controlled by the expanding wall of the expander; the contracting direction of the expander is the opening direction of the plane sliding valve, and the expanding direction of the expander is the closing direction of the plane sliding valve; moreover, after the expanding wall moves to enable the plane sliding valve to be closed, if the pressure of the inside of the expander is increased, the expanding wall can continue to move outwards and the closing state of the sliding valve can not be changed.

Description

Closed minute-pressure storage water heater

Technical field

The utility model relates to a kind of water heater, particularly a kind of closed minute-pressure storage water heater.

Background technology

Existing closed storage water heater, its water tank inlet connects running water pipe, delivery port picks out water valve, the pressure with running water is identical all the time for pressure in the water tank, when the volume of water tank hour, the interior pressure of little water tank is less, but when water tank capacity is big, press also bigger in it, so, the wall thickness of large water tank is also greater than the wall thickness of little water tank, and the manufacturing process of large water tank is far longer than the manufacturing process of little water tank, this also be up to the present the closed water storage electric heater of the big capacity of China always by key reason that foreign brand name monopolized, and, under the condition of HTHP, work very easily to cause for a long time because of water tank and get rusty, shortened the life-span of water tank, also blast easily late period at water heater.At the problems referred to above that exist in the closed water storage electric heater, existing people has designed the electric heater of band water-control device, its objective is the pressure-bearing time that shortens the electric heater water tank, as disclosing a kind of " the closed courage body of the low pressure of valve controlled type electric heater " by name among the disclosed Chinese patent bulletin CN2428724Y in May 2 calendar year 2001, on the courage body diapire of this electric heater the water inlet interface is set respectively, water outlet interface and blowdown interface, at water inlet interface polyphone a magnetic valve and a pressure switch are set, at check valve of water outlet interface peripheral hardware and magnetic valve, establish an overflow pipe in the courage body, the blowdown interface is provided with a magnetic valve, on off state by the control magnetic valve, guarantee that the courage body can be communicated with atmosphere all the time, thereby realization courage body is worked under low-pressure state; This water control type electric heater is because use a plurality of magnetic valves, so its shortcoming is complex structure, poor reliability.

Summary of the invention

The purpose of this utility model is in order to solve the complex structure that exists in the problem that life-span is short, security is low that exists in the existing closed storage water heater or the closed storage water heater of valve controlled type, the problem of poor reliability, and a kind of simple in structure, safe in utilization, closed minute-pressure storage water heater that reliability is high is provided.

Technical scheme:

The technical scheme that realizes the utility model purpose is: a kind of closed minute-pressure storage water heater comprises water tank, thermal source assembly and outlet valve; Wherein the thermal source assembly can be solar thermal collector or electrothermal tube, electromagnetic heating body, microwave generator, heat pump heating and temperature control element separately etc.; Be characterised in that water tank communicates with expander, be connected on off state between water tank and the running water pipe and be not subjected to the plane guiding valve of the influence of hydraulic pressure of running water, the on off state of plane guiding valve is controlled by the expansion wall of described expander, the shrinkage direction of expander (expansion wall moves inward) is the direction of opening of plane guiding valve, the expansion direction of expander (expansion wall outwards moves) is the closing direction of plane guiding valve, and, after expansion wall outwards moves the plane guiding valve cuts out, increase if press in the expander, then expansion wall can continue outwards to move and the closed condition of plane guiding valve remains unchanged.After plane described in the utility model guiding valve cuts out,, opens the pressure in the running water pipe even can not controlling it more greatly; Wherein expander can be a prior art, also discloses a kind of " bellows-type expander " in October 4 nineteen ninety-five among the disclosed Chinese patent bulletin CN2209380Y; Expansion wall wherein described in the utility model is meant a wherein wall of expander, during this wall motion the volume of expander is changed.Closed minute-pressure storage water heater is before using for the first time, expander resets at the stopping means place under elastic force or gravity effect, its volume minimum, the switch lever that the expansion wall of expander drives the plane guiding valve is in open mode, behind the good this closed minute-pressure storage water heater of user installation, open outlet valve, running water flows out through outlet valve after the plane guiding valve enters water tank again, at this moment, the expansion wall of expander is subjected to the effect of water pressure and elastic force or gravity, and water pressure is opposite with elastic force or gravity direction, expansion wall is positioned in a certain position that makes suffered water pressure and elastic force or gravitational equilibrium, at this moment, if the pressure in the water tank increases (when turn down in the water outlet cross section big or outlet valve of hydraulic pressure change from the beginning), the effect that expansion wall overcomes elastic force or gravity then moves, the expander volume is increased, drive the switch lever motion of plane guiding valve, the water flow section of plane guiding valve is reduced, to reduce the value added of pressure in the water tank, up to making suffered water pressure of expansion wall and elastic force or gravity again till the balance, otherwise, then opposite; When closing outlet valve, because of the plane guiding valve also has little time to cut out, the expander volume increases rapidly, expansion wall with switch lever shift onto the plane guiding valve cuts out till (at this moment, increase if press in the water tank, then expansion wall continues to move to former direction, but do not change the closed condition of plane guiding valve, this segment distance that also is expansion wall is a null), at this moment, even the hydraulic pressure in the running water pipe can not be opened the plane guiding valve greatly again, the interior pressure of water tank only can change because of the variation of water temperature, and this variation can be inflated the expansion of device or shrink absorb; When ignoring the action force of plane slide valve switch bar (action force of in fact existing ceramic flat surface tap ten/little, can it be reduced with the mechanical reduction mode even can not ignore also), because it is definite value that expansion wall is born the malleation area of hydraulic pressure, and suffered water pressure equates with the reseting elasticity or the gravity of expander, can think that the pressure in the water tank equals the back-moving spring power of expander or gravity bears hydraulic pressure divided by expansion wall malleation area all the time, so the nominal operation pressure that will set water tank only need design the reset force of expander and malleation area that expansion wall is born hydraulic pressure gets final product.

Described closed minute-pressure storage water heater is characterized in that described plane guiding valve is plane and straight line guiding valve or plane revolving valve.

Described closed minute-pressure storage water heater is characterized in that described plane guiding valve comprises valve body and movable valve block, and wherein movable valve block is divided into rotating plate and secondary moving plate, and secondary moving plate is provided with back-moving spring between secondary moving plate and the valve body between rotating plate and valve body; During normality, the through hole on the secondary moving plate is over against the water inlet of valve body, and rotating plate is subjected to external force effect campaign, through hole on the rotating plate and the through hole on the secondary moving plate are aligned or staggers and realizes the Kai Heguan of plane guiding valve; When foreign material were stuck between the through hole of rotating plate and secondary moving plate, the closing movement of rotating plate drove secondary moving plate motion, and the through hole that makes secondary moving plate misplaces with the water inlet of valve body, and the closing plane guiding valve.When the plane guiding valve cuts out, if between rotating plate and secondary moving plate, accompany impurity, then when opening of next rotating plate moved, secondary moving plate resets under the spring force effect, the through hole that moves to rotating plate and secondary moving plate up to rotating plate is to living the water inlet of valve body, the plane guiding valve is opened and impurity is washed away, and it is normal that the plane guiding valve recovers.

Described closed minute-pressure storage water heater is characterized in that the switch lever of described plane guiding valve is provided with tooth, and the tooth bar on this tooth and the control slide block is meshing, and the motion of control slide block is controlled by the expansion wall of described expander.Expansion wall cooperates the control that realizes the plane guiding valve by the tooth bar on the control slide block with the tooth of switch lever.

Described closed minute-pressure storage water heater is characterized in that the switch lever of described plane guiding valve and the water chamber that movable valve block is positioned at valve body, and the opening of expander connects the water chamber of valve body, and the control slide block directly stretches into the action of the water chamber gauge tap bar of valve body.Can think that also valve body is the standing part of expander.

Described closed minute-pressure storage water heater, the switch lever that it is characterized in that described plane guiding valve is a shift fork, is provided with the reversed column that matches with this shift fork on described expansion wall.The shift fork of expansion wall by this reversed column and switch lever cooperate the control of realization to the plane guiding valve.Certainly, also can establish reversed column on the switch lever, on expansion wall, establish shift fork and realize herein.

Described closed minute-pressure storage water heater is characterized in that described water tank is connected to relief valve, and this relief valve is controlled by described expansion wall; Described expansion wall is that first closing plane guiding valve is opened relief valve again to the control sequence of plane guiding valve and relief valve.After expansion wall was closed the plane guiding valve, when pressure was too high in the water tank, the expansion wall of expander continued outwards motion, and after the control relief valve was opened the pressure release that discharges water, expansion wall was moved to the direction that resets (inwardly), closes relief valve again.

Described closed minute-pressure storage water heater is characterized in that described expansion wall is provided with the control slide block, and the control lever of described relief valve is between the jacking block and resetting block that are provided with on the control slide block; Described jacking block and the common control that realizes relief valve of the jacking block that resets.After the control slide block is closed the plane guiding valve, when pressure is too high in the water tank, the expansion wall of expander continues outwards motion, after the control lever of the jacking block promotion relief valve on the control slide block is opened the pressure release that discharges water with relief valve, the control slide block is to the direction motion that resets, before open the plane guiding valve, the control lever of resetting block drive relief valve is closed relief valve at the control slide block movement.

Described closed minute-pressure storage water heater is characterized in that described expansion wall is provided with the control slide block, and described relief valve is provided with back-moving spring, the common control that realizes relief valve of the jacking block that is provided with on this back-moving spring and the described control slide block.After the control slide block is closed the plane guiding valve, when pressure is too high in the water tank, the expansion wall of expander continues outwards motion, the control lever of the jacking block promotion relief valve on the control slide block is opened relief valve and is emitted the pressure release of fraction water, the control slide block is to the direction motion that resets, jacking block separates with the control lever of relief valve, and relief valve resets under this action of reset spring and cuts out, and the water yield of emitting when its benefit is pressure release is less.

Described closed minute-pressure storage water heater is characterized in that the valve body of described relief valve and the shared described expander of plane guiding valve, and the movable valve block and the switch lever of the control lever of relief valve, plane guiding valve are positioned at this valve body.

Described closed minute-pressure storage water heater, it is characterized in that described expansion wall is provided with the control slide block, this control slide block is provided with and falls level, order is placed with spring and lock dog in the blind hole of fixed lock dog seat, this lock dog and control are fallen the level formation locking mechanism that matches on the slide block, and its latched position is in described expansion wall closing plane guiding valve or opens after the relief valve.After the control slide block is in the position of opening relief valve, when expansion wall also continues to move, then water heater occur unusual (as the plane guiding valve damage or relief valve malfunctioning etc.), expansion wall continues outwards motion, controls the lock-in range that level falls into lock dog of falling of slide block, and lock dog falls into falling in the level of control slide block in the spring force effect, to control the slide block locking, even the interior water emptying of water tank this moment, the control slide block can not reset, and promptly can not open the plane guiding valve once more; Its benefit is that the hydraulic pressure in the water tank may be with the expander bursting when this abnormal conditions occurring, and with the protection water tank, can not reset because the control slide block is locked this moment, so the plane guiding valve is in closed condition, and can waste water resource.Certainly, if uncontrolled control of relief valve, then latched position is in a control slide block closing plane guiding valve segment distance later on, because generally speaking, inertia is arranged during control slide block closing plane guiding valve, must assurance can when normally closing, not produce misoperation and lock.This locking mechanism also can be arranged in the intake antrum of plane guiding valve with the switch lever of plane guiding valve and the control lever of relief valve.

Described closed minute-pressure storage water heater, the expansion wall that it is characterized in that described expander is a glued membrane, this glued membrane outside is provided with strengthens cover.This strengthens cover can be for netted, and its material can be made with fiber.Its effect is the compressive resistance that improves glued membrane.

Described closed minute-pressure storage water heater is characterized in that between described reinforcement cover and the glued membrane bonding or be combined with each other.

Described closed minute-pressure storage water heater, the expansion wall that it is characterized in that described expander is a glued membrane, expander is fixed with sharp-crested outward to living the spine in the glued membrane outside.

Described closed minute-pressure storage water heater, the expansion wall that it is characterized in that described expander is a glued membrane, and this glued membrane outside is provided with central authorities and the fixing pad of control slide block one end, and the inboard periphery of this pad is protruding cambered surface to laminate direction.The back-moving spring of expander can be located at this pad outside, is convenient to regulate.Strengthen cover if the glued membrane outside is provided with, then this pad is positioned at and strengthens the cover outside.

Described closed minute-pressure storage water heater is characterized in that described expander is made of cylinder body, piston and back-moving spring, and wherein piston is the expansion wall of expander.

Described closed minute-pressure storage water heater, it is characterized in that being provided with the section that sluices at the afterbody of described cylinder body seal section, when described piston is subjected to water pressure pushing outwards to slide into this sluicing section, from piston and the gap between the section of sluicing outwards sluices so that the water tank pressure release, the afterbody of the section that sluices can connect the water that aqueduct flows out pressure release and draw outer cover of water heater.Its benefit is to have saved relief valve in the existing closed storage water heater (also claim pressure-reducing valve---when pressing greater than a certain value in the water tank, pressure-reducing valve backed down outside sluicing with pressure release).

Beneficial effect:

Owing to adopted technical scheme described in the utility model, water tank is only when the water outlet user mode, just communicate with running water pipe, the size of expansion wall control plane slide opening under water tank hydraulic pressure and reset force effect makes to press in the water tank and is stabilized in a certain low range hydraulic pressure, during non-water outlet user mode (normality), water tank remains on the state of low hydraulic pressure, guarantees when outlet valve is opened, outwards draining, thus the control plane guiding valve is opened and is got final product; So, the suffered interior pressure of water tank is minimum, avoided water tank in the existing closed storage water heater to be in the affected by high of running water for a long time, prolonged the life-span of water tank, prevented that water tank from exploding because of interior pressure is too high, safe, simple in structure, reliable, and can reduce the water tank wall thickness, even can use plastic cistern with the saving material; Compare with the straight top type valve that common pressure-reducing valve is used, because the closing direction of straight top type valve is identical with the water outlet direction, spool is clamped impurity in the water easily and is made it malfunctioning, and the closing direction of plane guiding valve is vertical with the water outlet direction, can clamp impurity when closing, and the open and closed of plane guiding valve are only relevant with expansion wall, and are irrelevant with the hydraulic pressure in the running water pipe, the reliability height.

Description of drawings

The utility model is described in further detail below in conjunction with drawings and Examples.

Fig. 1 is the structural representation of an embodiment of closed minute-pressure storage water heater described in the utility model.

Fig. 2 is the view of closing control section behind the outlet valve among Fig. 1 embodiment.

Fig. 3 is the structural representation of the plane and straight line guiding valve of band relief valve used in the closed minute-pressure storage water heater described in the utility model.

State diagram when Fig. 4 is the guiding valve pressure release of Fig. 3 plane.

Fig. 5 is the structural representation of the switch lever of Fig. 1 embodiment midplane guiding valve control section when being a shift fork.

Fig. 6 is the view of closing among Fig. 5 behind the outlet valve.

Fig. 7 is the structural representation of another embodiment control section.

Fig. 8 is the enlarged drawing of A part among Fig. 7.

Fig. 9 is the structural representation of the another embodiment control section of closed minute-pressure storage water heater described in the utility model.

Figure 10 has closed the state diagram behind the outlet valve among Fig. 9 embodiment.

Figure 11 is the schematic diagram of having taken away among Fig. 9 embodiment behind control slide block and the switch lever.

Figure 12 is the outside drawing that is fixed on the still on the valve body among Figure 11.

Figure 13 is the outside drawing of secondary moving plate among Figure 11.

Figure 14 is the outside drawing of rotating plate among Figure 11.

Figure 15 is the another kind of resetting structure schematic diagram of anti-impurity plane guiding valve among Fig. 9 embodiment.

Figure 16 is the view when secondary moving plate moves among Figure 15.

Figure 17 is the structural representation of control section of another embodiment of closed minute-pressure storage water heater described in the utility model.

Among the figure 11, corrugated expander, 12, the control slide block, 121, preceding group of platform, 122, the back dials platform, 123, jacking block, 1230, resetting block, 124, fall level, 125, the guide and limit piece, 13, plane guiding valve, 131, switch lever, 132, limited post, 14, relief valve, 141, control lever, 15, running water pipe, 16, water inlet pipe, 161, outlet valve, 162, water tank, 163, electrothermal tube, 164, temperature controller, 165, outlet pipe, 17, overflow pipe, 18, lock dog, 181, spring, 182, the lock dog seat; 130, decide piece, 1301, water inlet, 1302, delivery port, 1303, discharge opening, 1300, slide block, 13001, connectivity slot, 13002, switch lever; 21, expander, 22, the control slide block, 221, reversed column, 224, fall level, 23, the plane guiding valve, 231, shift fork, 2311, front fork, 2312, back vent, 25, running water pipe, 26, water inlet pipe, 28, lock dog; 32, control slide block, 321, spherical surface body, 33, the plane guiding valve, 331, switch lever, 34, relief valve, 341, control lever, 35, running water pipe, 36, water inlet pipe, 37, overflow pipe, 38, lock dog, 39, ball, 391, glued membrane, 392, strengthen cover; 41, valve body, 4101, water chamber, 4102, delivery port, 4103, spilled water hole, 42, glued membrane, 43, the plane guiding valve, 4301, tooth, 431, switch lever, 432, rotating plate, 4321, through hole, 433, secondary moving plate, 4331, through hole, 4332, shifting block, 4333, spring, 434, still, 4341, through hole, 44, spool, 441, spring, 45, support, 4501, gas port, 451, spring base, 452, set screw, 453, spring, 46, the control slide block, 461, pad, 462, screw, 463, tooth bar, 464, shifting block, 465, fall level, 48, lock dog, 481, spring, 69, point is perverse; 532, rotating plate, 5332, shifting block, 56, the control slide block; 71, running water pipe, 72, water inlet pipe, 73, the plane guiding valve, 731, switch lever, 74, cylinder body, 75, piston, 750, water chamber, 76, the control slide block, 761, tooth bar, 77, guide pad, 78, back-moving spring, 79, sealing ring, B, seal section, C, D, pressure release section.

The specific embodiment:

Embodiment one, and Fig. 1 is the structural representation of an embodiment of closed minute-pressure storage water heater described in the utility model.As can be seen from Fig. 1, described closed minute-pressure storage water heater comprises shell (not drawing among the figure), water tank 162, thermal source assembly and outlet valve 161; Wherein the thermal source assembly in the present embodiment is electrothermal tube 16 3 and temperature controller 164; Bellows-type expander 11 is connected on the connecting pipe of plane guiding valve 13 and water tank 162---on the water inlet pipe 16, the expansion wall of expander 11 is fixed with control slide block 12 left ends, the other end is also spacing by guide and limit piece 125 guiding that are fixed on the shell, is provided with between control slide block 12 and shell to make the control slide block be subjected to the back-moving spring of the power of direction (not drawing among the figure) left; Advancing of the plane guiding valve 13 of opening and closing by switch lever 131 control, delivery port connects running water pipe 15 and water inlet pipe 16 respectively, 17 of water inlet pipe 16 and overflow pipes are provided with the relief valve 14 that controlled bar 141 controls are opened and closed, switch lever 131 outer ends of plane guiding valve are stretched in the preceding group of platform of controlling on the slide block 12 121 and back room of dialling between the platform 122, also be provided with on the control slide block and fall level 124 and lay respectively at control lever 141 forward-and-rearward jacking blocks 123, resetting block 1230, be fixed in the interior blind hole of the lock dog seat 182 on the shell and be placed with spring 181 and lock dog 18, the internal structure of the plane guiding valve 13 in the present embodiment is the same with conventional ceramic plane tap, shown in Figure 1 is the water outlet user mode, plane guiding valve 13 is in open mode, when pressing increase in the water tank or closing outlet valve 161, expander 11 volumes that communicate with water tank increase, control slide block 12 moves right, the preceding platform 121 of dialling drives the rotation of switch levers 131 clockwise directions to reduce the opening of plane guiding valve 13, if outlet valve 16 is closed, then control slide block 12 and continue right lateral up to the plane guiding valve is closed apolipsis; After closing outlet valve, increase as the interior pressure that raises because of water temperature in the water tank, then expander continues to expand to absorb the interior pressure that water tank increases, control slide block 12 moves to right, if press too high in the water tank then expander continuation expansion, the control lever 141 that drives relief valves 14 up to jacking block as shown in Figure 2 123 is opened relief valve to release fraction water, after treating the interior drops of water tank, control slide block 12 resets, resetting block 1230 drives control lever 141 resets relief valve 14, if during abnormal conditions such as relief valve is malfunctioning, press in the water tank and continue to increase, expander expands and promotes control slide block 12 and moves right, and falls level 124 when moving to lock dog 18 places, lock dog 18 ejects, expander continue to expand up to by bursting, and the water in the water tank spills through expander, and control slide block 12 is locked by lock dog 18 and can not reset, so plane guiding valve 13 can not be opened, prevented that expander from damaging the back waste water resource or causing the water of environment to pollute.

The control lever 141 of the relief valve among the embodiment one is between jacking block 123 that is provided with on the control slide block 12 and resetting block 1230; If relief valve 14 is provided with back-moving spring (supposing that Fig. 1 state is the closed condition of relief valve), then the resetting block among Fig. 1 1230 can be cancelled, by back-moving spring and the jacking block 123 common controls of controlling on the slide block that realize relief valve 14.

Fig. 3 is the structural principle schematic diagram of closed minute-pressure storage water heater midplane straight line guiding valve described in the utility model.The water inlet of deciding on the piece 130 1301 connects running water pipe, delivery port 1302 water receiving casees, slide block 1300 is provided with connectivity slot 13001 towards deciding piece 130 1 sides, opposite side is provided with switch lever 13002, the closed condition that is in shown in Figure 3, when expander shrank, slide block 1300 moved to left connectivity slot 13001 is communicated with water inlet 1301 with delivery port 1302; When hydraulic pressure was too high in the water tank, expander zone of swelling movable slider 1300 was shifted to the right to state shown in Figure 4, and the delivery port 1302 that links to each other with water tank communicates with the external world through connectivity slot 13001, and the water of water tank releases through discharge opening 1303.

Embodiment two, and Fig. 5 is the structural representation of the switch lever of plane guiding valve control section when being a shift fork.In conjunction with Fig. 5 and Fig. 6 as seen, the difference of present embodiment and embodiment one is, the switch lever on the plane guiding valve 23 for band before the shift fork 231 of driving lever 2311 and back driving lever 2312, on control slide block 22, be provided with reversed column 221, water inlet pipe 26 water receiving casees.Fig. 5 midplane guiding valve is in open mode, and Fig. 6 midplane guiding valve 23 is in closed condition.

Embodiment three, and Fig. 7 is the structural representation of another embodiment control section.As can be seen from Fig. 7, its expander is the ball 39 that is connected between water inlet pipe 36 and the plane guiding valve 33, and ball 39 internal layers are watertightness glued membranes 391, skin is to strengthen cover 392, control slide block 32 front ends are fixed with spherical surface body 321, water inlet pipe 36 water receiving casees, and other structure is identical with embodiment one.

Embodiment four, and Fig. 9 is the structural representation of the another embodiment control section of closed minute-pressure storage water heater described in the utility model.As can be seen from Fig. 9, its expander is made of valve body 41, glued membrane 42 and spring 453, and valve body 41 also is the valve body of plane guiding valve 43 and relief valve simultaneously, and plane guiding valve 43 is plane revolving valves; Relief valve is the straight top type structure, is made up of the spilled water hole 4103 on spool 44, spring 441 and the valve body 41; Accompany glued membrane 42 between support 45 and the valve body 41 as the expander expansion wall, control slide block 46 outer ends that are provided with the retaining head are passed glued membrane 42 central authorities' back cover Upper gaskets 461 and are connected with screw 462, pad 461 is protruding cambered surface to laminate direction by the periphery of glued membrane one side, the back-moving spring 453 of expander is located between pad 461 and the spring base 451, spring base 451 rear sides are the set screw 452 that are threaded with support 45, and set screw 452 can be regulated the elastic force of expander back-moving spring 453; One section tooth that is provided with on tooth bar 463 and the switch lever 431 that control slide block 46 is positioned at plane guiding valve 43 water chambers 4101 matches, also be provided with on the control slide block and fall level 465 and lock dog 48 pairings, and spool 44 pairings of shifting block 464 on the control slide block and relief valve, delivery port 4102 on the valve body 41 is through water inlet pipe water receiving case, plane guiding valve 43 is by valve body 41, switch lever 43 and movable valve block are formed, be fixed with the still 434 of band through hole 4341 on the valve body 43, through hole 4341 outer side joint running water pipes, wherein movable valve block is divided into the rotating plate 432 of being with through hole 4321 and the secondary moving plate 433 of being with through hole 4331, secondary moving plate 433 is provided with back-moving spring 4333 between secondary moving plate 433 and the valve body 41 between rotating plate 432 and valve body; Press when increasing in the water tank, the interior pressure of water chamber 4101 also increases, glued membrane 42 outwards moves, and the tooth bar 463 on the control slide block 46 drives switch lever 461 plane guiding valve 43 cuts out, as shown in figure 10, when interior pressure continues to increase, glued membrane 42 continues outwards motion, and the shifting block 464 on the control slide block outwards pushes up the spool on the relief valve 44, and relief valve is opened, water in the water chamber 4101 is after spilled water hole 4103 flows out sub-fraction, and glued membrane resets.In Figure 10 state, when relief valve is malfunctioning, if press too high in the water chamber 4101, then control slide block 46 and continue to move upward under glued membrane drives, lock dog 48 is fallen into fall level 465 places, spine 69 front portions are crossed in the hole on pad 461, spine 69 punctures glued membrane with the protection water tank, control slide block 46 is locked by lock dog 48 and can not reset, and the plane guiding valve can not be opened again, is unlikely to waste water resource; Even cancel relief valve in the present embodiment, when glued membrane expand into spine 69 places on the support 45, glued membrane was also punctured by spine 69 and protects water tank.The plane guiding valve is in normal use, secondary moving plate 433 is motionless, rotating plate 432 overlaps between the through hole 4331 of through hole 4321 and secondary moving plate 433 or misplaces and realize opening and closing making under the drive of switch lever 43, in the process of closing plane guiding valve (rotating plate 432 clockwise rotates), if there is impurity to be stuck between through hole 4331 and 4321, then rotating plate drives secondary moving plate 433 by this impurity and clockwise rotates, and makes through hole 4341 dislocation on through hole 4331 and the still 434 on the secondary moving plate and the closing plane guiding valve; When opening the plane guiding valve next time, in the process that rotating plate rotates counterclockwise, secondary moving plate also rotates to counter clockwise direction under spring 4333 effects, be communicated with through hole 4341 on the still and the plane guiding valve is opened up to the through hole on the secondary moving plate 4331, when several times are opened, as long as between rotating plate and secondary moving plate impurity is unclamped, impurity will be washed away, and it is normal that the plane guiding valve recovers.

Figure 15 is the another kind of resetting structure of secondary moving plate among the embodiment four, as can be seen from Fig. 15, stretch out a shifting block 5332 on the secondary moving plate 532, when card between rotating plate and secondary moving plate has impurity, rotating plate drives secondary moving plate and rotates, and the shifting block 5332 on the secondary moving plate 532 stretches into control slide block 56 inboards, as shown in figure 16, next time control slide block 56 promotes shifting block 5332 when descending and resets, thereby secondary moving plate 532 is resetted.

Among the described embodiment of Fig. 9, the available weight that is placed on the pad outside replaces the back-moving spring of expander, and this is that general technology person is all enforceable on the utility model basis, has at this and does to state more.

Embodiment five, and Figure 17 is the structural representation of control section of another embodiment of closed minute-pressure storage water heater described in the utility model.Expander in the present embodiment is by cylinder body 74, the piston 75 of band sealing ring 79 and back-moving spring 78 constitute, the water inlet of plane guiding valve 73 connects running water pipe 71, delivery port taps into water pipe 72, the seal section B and the piston 75 of cylinder body 74 surround water chamber 750, when piston is positioned at seal section B, seal by sealing ring 79 between piston and the seal section, water chamber 750 communicate with the water inlet pipe 72 of water receiving case (in fact water chamber 750 may also be referred to as expansion chamber), tooth bar 761 on the control slide block 76 is meshing with the tooth on the switch lever 731 of plane guiding valve, state shown in Figure 180 is a user mode, and running water communicates with water chamber 750 and water tank after plane guiding valve 73 enters water inlet pipe 72; This moment, piston moved and the size of control plane slide opening under the effect of hydraulic pressure and back-moving spring to the left or to the right when pressing variation in the water tank, so that its suffered power reaches balance, realized the constant voltage purpose; When water heater is closed outlet valve; the interior pressure of water chamber 750 increases piston 75 and moves to right; stop after slide block 76 upper racks drive plane guiding valve 73 cuts out by controlling; when pressing variation in the water tank that causes as changing because of the water temperature in the water tank; then piston in the scope of seal section B to the right or be moved to the left; but; make in case abnormal conditions such as the plane guiding valve is malfunctioning occur and to press in the water tank when constantly raising; piston 75 outwards moves to pressure release section C place; the gap outside pressure release of water between piston and pressure release section C in the water chamber; in water tank, press and return in the prescribed limit; if pressure release section C is not enough to the interior pressure that venting increases; then piston continues outwards to move to the pressure release section D of outer end even comes off with the protection water tank from pressure release section D, and as can be seen from Fig. 18, the gap between pressure release section D and the piston is bigger.Certainly, also the pressure release section C of the cylinder body in the present embodiment can be designed to the internal diameter identical with seal section with the D place, but realize pressure release offering axial groove, but groove there is certain damage to sealing ring, so be a relatively poor conversion with respect to pressure release section C and D place.

Claims (10)

1, a kind of closed minute-pressure storage water heater comprises water tank, thermal source assembly and outlet valve; It is characterized in that water tank communicates with expander, be connected on off state between water tank and the running water pipe and be not subjected to the plane guiding valve of the influence of hydraulic pressure of running water, the on off state of plane guiding valve is controlled by the expansion wall of described expander, the shrinkage direction of expander is the direction of opening of plane guiding valve, the expansion direction of expander is the closing direction of plane guiding valve, and, after the expansion wall motion is closed the plane guiding valve, increase if press in the expander, then expansion wall can continue outwards to move and the closed condition of plane guiding valve remains unchanged.

2,, it is characterized in that described plane guiding valve is plane and straight line guiding valve or plane revolving valve according to the described closed minute-pressure storage water heater of claim 1.

3, according to the described closed minute-pressure storage water heater of claim 1, it is characterized in that described plane guiding valve comprises valve body and movable valve block, wherein movable valve block is divided into rotating plate and secondary moving plate, and secondary moving plate is provided with back-moving spring between secondary moving plate and the valve body between rotating plate and valve body; During normality, the through hole on the secondary moving plate is over against the water inlet of valve body, and rotating plate is subjected to external force effect campaign, through hole on the rotating plate and the through hole on the secondary moving plate are aligned or staggers and realizes the Kai Heguan of plane guiding valve; When foreign material were stuck between the through hole of rotating plate and secondary moving plate, the closing movement of rotating plate drove secondary moving plate motion, and the through hole that makes secondary moving plate misplaces with the water inlet of valve body, and the closing plane guiding valve.

4, according to the described closed minute-pressure storage water heater of claim 1, it is characterized in that the switch lever of described plane guiding valve is provided with tooth, the tooth bar on this tooth and the control slide block is meshing, and the motion of control slide block is controlled by the expansion wall of described expander.

5, according to the described closed minute-pressure storage water heater of claim 1, it is characterized in that described water tank is connected to relief valve, this relief valve is controlled by described expansion wall; Described expansion wall is that first closing plane guiding valve is opened relief valve again to the control sequence of plane guiding valve and relief valve.

6, according to the described closed minute-pressure storage water heater of claim 5, it is characterized in that the valve body of described relief valve and the shared described expander of plane guiding valve, the movable valve block and the switch lever of the control lever of relief valve, plane guiding valve are positioned at this valve body.

7, according to claim 1 or 5 described closed minute-pressure storage water heaters, it is characterized in that described expansion wall is provided with the control slide block, this control slide block is provided with and falls level, order is placed with spring and lock dog in the blind hole of fixed lock dog seat, this lock dog and control are fallen the level formation locking mechanism that matches on the slide block, and its latched position is in after the described expansion wall closing plane guiding valve.

8, according to the described closed minute-pressure storage water heater of claim 1, the expansion wall that it is characterized in that described expander is a glued membrane, and this glued membrane outside is provided with strengthens cover.

9, according to the described closed minute-pressure storage water heater of claim 1, the expansion wall that it is characterized in that described expander is a glued membrane, and expander is fixed with sharp-crested outward to living the spine in the glued membrane outside.

10, according to the described closed minute-pressure storage water heater of claim 1, it is characterized in that described expander is made of cylinder body, piston and back-moving spring, wherein piston is the expansion wall of expander; Afterbody at described cylinder body seal section is provided with the section that sluices, and when described piston is subjected to water pressure pushing outwards to slide into this sluicing section, outwards sluices so that the water tank pressure release from the gap between piston and the sluicing section.

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