CN201053743Y

CN201053743Y - Water-storage type water heater water controlling device

Info

Publication number: CN201053743Y
Application number: CNU2007200228278U
Authority: CN
Inventors: 韩赟
Original assignee: QINGDAO CAT SOLAR TECHNOLOGY Ltd Co
Current assignee: QINGDAO CAT SOLAR TECHNOLOGY Ltd Co
Priority date: 2007-05-26
Filing date: 2007-05-26
Publication date: 2008-04-30
Anticipated expiration: 2017-05-26

Abstract

The utility model relates to a water-control device for storage water heater, comprising a valve body, a connecting support, an expansion wall and a changeover valve, wherein, the valve body and the expansion wall form an expansion chamber. The valve body is provided with a water inlet chamber and a water outlet hole, wherein, the water inlet chamber is connected with a tap-water pipe, the water outlet hole communicated with the expansion chamber is connected with a discharge valve of the heater, a valve hole is arranged between the water inlet chamber and the expansion chamber, a slidable water stop block is arranged at the valve hole inside the expansion chamber, and the sliding of the water stop block is controlled by the expansion wall; a spring is arranged between the expansion wall and the connecting support, and the spring direction makes the expansion chamber shrink; and the control rod of the changeover valve is arranged at one side of the expansion wall and controlled by the expansion wall. When the discharge valve is closed, the water tank is communicated with the atmosphere; only when the water is out, the water tank bears the isobarically hydraulic pressure; and the water tank makes a change from the long-term bearing working form to short-term bearing working form, thereby prolonging the life span of the water tank and enhancing the safety.

Description

Water control apparatus for water storage type water heater

Technical field

The utility model relates to a kind of water-control device, particularly a kind of water control apparatus for water storage type water heater.

Background technology

In the closed storage water heater water system that existing family or hotel guest-room are used, comprise water tank, cold water pipe, hot-water line and outlet valve, wherein cold water pipe connects water tank and running water pipe, hot-water line connects water tank and outlet valve, fill hot water in the water tank, this hot water is that the pyrogenicity element is (as electrothermal tube, electromagnetic field eddy-current heating body---utilize the principle of electromagnetic stove, microwave generator---utilize the principle of micro-wave oven that water is heated, the reverse work of the hot system of refrigerant system---refrigeration system is about to the condenser of refrigeration system as heater) or get through the solar thermal collector heat temperature raising; During normality, running water pipe, water tank, hot-water line, outlet valve (or mixed water valve) constitute an obturator, and hot-water line can join to realize central water control with a plurality of outlet valves (or mixed water valve); Open outlet valve (or mixed water valve) during use, under the hydraulic pressure effect of the hot water in the water tank in running water pipe water is extruded through outlet valve; This closed water heater's advantage is to realize remote central water control, but shortcoming is short a, poor stability of water tank life-span, reason is that water tank bears high hydraulic pressure for a long time, water tank is thicker with material, cost height, metal water tank under the HTHP effect very easily by corrosion, thereby shortened its life-span, and when hydraulic pressure too high or temperature controller, can blast when relief valve is malfunctioning, thereby cause danger.The problems referred to above in view of existing water heater existence, in the Chinese patent bulletin CN2428724Y of bulletin on May 2 calendar year 2001, a kind of " the low pressure sealing courage body electric heater of valve controlled type " disclosed, 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 electric heater has used a plurality of electromagnetic switching valves to realize switching (it switches power and is electromagnet) between courage bodies and entery and delivery port, the atmosphere, and its shortcoming is: can not use hot water when complex structure, power failure, and the cost height.

Summary of the invention

The purpose of this utility model is a problem short for the water tank cost height that exists in the water system that solves existing closed storage water heater, life-span, poor stability, and provide a kind of simple in structure, easy to use, safe, can prolong the storage water heater's in water tank life-span water control apparatus for water storage type water heater.

The purpose of this utility model is such: a kind of water control apparatus for water storage type water heater, comprise valve body, connect support, expansion wall and transfer valve, wherein transfer valve is the valve on the controlled passage, controlled passage can be passage, the passage of outlet from the water-heater water tank to the overflow pipe, the passage from water tank to mixed water valve from the water inlet pipe to the water-heater water tank, the shell of transfer valve is relative with valve body static, and valve body and expansion wall surround an expansion chamber; Valve body is provided with intake antrum and apopore, wherein intake antrum connects running water pipe, the apopore that communicates with expansion chamber connects the outlet valve of water heater, be provided with valve opening between described intake antrum and the expansion chamber, make the water in the intake antrum can flow into expansion chamber, be positioned at the valve opening place in the described expansion chamber and be provided with the piece that slidably blocks water, the slip of this piece that blocks water is controlled by described expansion wall; Described expansion wall is provided with spring with being connected between the support, its elastic force direction is shunk described expansion chamber; The control lever of described transfer valve is arranged on expansion wall one side and controlled by expansion wall.The order of expansion wall control transfer valve and the described piece that blocks water is: expansion wall from outermost when the interior motion, drive described control lever control transfer valve and change user mode over to from holding state, then, expansion wall is controlled the piece that blocks water and is separated with described valve opening, to increase the cross section of described intake antrum to the intake tunnel of described expansion chamber, and expansion wall from interior when outermost is moved, expansion wall is controlled the block reset that blocks water and to the valve opening place valve opening is blocked, make the water in the intake antrum enter expansion chamber in the gap through blocking water between piece and the valve opening, then, expansion wall drives described control lever control transfer valve and returns holding state from user mode.

Described water control apparatus for water storage type water heater, described expansion wall are to be sandwiched in body cavity opening part and the glued membrane that is connected between the support.

Described water control apparatus for water storage type water heater, described control lever are positioned at the described glued membrane outside, and control lever is protruding cambered surface to glued membrane by the end face of glued membrane, and described spring is located at control lever and is connected between the support.Its spring force passes to glued membrane by control lever.

Described water control apparatus for water storage type water heater, described connection support are provided with limited block to limit the outwards outermost position of motion of control lever; Connect the support inboard and be provided with annular cambered surface, when control lever outwards moved to outermost position, the cambered surface outer ring of this annular cambered surface inner ring and described control lever roughly joined and forms a streamlined curved surface.When glued membrane moved to outermost, this streamlined curved surface played support protection to glued membrane, at this moment, the outer wall shape of glued membrane under indeformable state preferably and this streamlined curved surface match.

Described water control apparatus for water storage type water heater, described expansion wall are pistons, are provided with sealing ring between this piston and the body cavity.The cross section of sealing ring is " U " shape, and opening is to body cavity.

Described water control apparatus for water storage type water heater, the water outlet direction of described valve opening is vertical with the direction of motion of the described piece that blocks water.

Described water control apparatus for water storage type water heater, the described piece that blocks water are subjected to gravity or the buoyancy of self or are arranged on the elastic force effect of the spring that blocks water between piece and the valve body and are positioned in described valve opening place.

Described water control apparatus for water storage type water heater, described piece one end that blocks water links to each other with described expansion wall.

Described water control apparatus for water storage type water heater, the water outlet direction of described valve opening is identical or parallel with the direction of motion of the described piece that blocks water, and the piece that blocks water can stretch in the valve opening its front portion under suffered external force effect.

Described water control apparatus for water storage type water heater, described valve opening are provided with can be along the slide block of the piece direction of motion activity that blocks water, and this slide block resets by the back-moving spring that is provided with between itself and the valve body or self gravitation or buoyancy.When blocking water block reset by water in impurity be stuck in when blocking water between piece and the slide block, slide block with the piece motion of blocking water to prevent that control lever is stuck and can not move.

When the utility model is applied on the water heater, be provided with three valves that holding state is following in the transfer valve: the normal closed gate between the normally closed inlet valve between the apopore of often opening spilling water valve, cold water pipe and described valve body between water tank cold water pipe and the overflow pipe, water tank hot-water line and the outlet valve; During holding state, water tank communicates with overflow pipe, obstructed with the apopore and the hot-water line of valve body, so water tank communicates with atmosphere through overflow pipe, water tank is in the open type duty; And the holding state of the water control apparatus for water storage type water heater of corresponding this moment is, the valve opening piece that blocked water blocks, and running water can only enter expansion chamber through the gap of valve opening and the piece that blocks water, and expansion wall is pushed up outermost by hydraulic pressure, presses in the expansion chamber with hydraulic pressure is identical from the beginning; When using hot water, open outlet valve, the gap that cause blocks water between piece and the valve opening is less, hydraulic pressure in the expansion chamber sharply descends, expansion wall is inwardly motion under the spring force effect, drive control lever transfer valve is transformed into user mode, be often to open the spilling water valve closing between water tank cold water pipe and the overflow pipe, normal closed gate between water tank hot-water line and the outlet valve is opened, normally closed inlet valve between the apopore of cold water pipe and valve body is opened, water tank is in enclosed user mode, at this moment, the hydraulic pressure in the expansion chamber and the malleation lifting surface area and the spring force of expansion wall, frictional force is relevant, as long as design the size of each power, can make in the expansion chamber to press when user mode constantly to make the water control apparatus for water storage type water heater tool in the effect of decompression barostat in a lower appropriate value, the pressure that water tank bore can reduce greatly; Certainly be located at the normally closed inlet valve between the apopore of cold water pipe and described valve body, also can change into and being directly arranged between cold water pipe and the running water pipe, but at this moment the decompression constant voltage effect of water control apparatus for water storage type water heater is inoperative to water tank.A plurality of outlet valves that communicate with apopore can be set in the water heater use simultaneously, and arbitrary outlet valve all can be controlled water control apparatus for water storage type water heater, so, can supplying water by multiple spot, promptly the same with the closed water heater central authorities that can realize supply water.

Owing to adopted technical scheme described in the utility model, when water control apparatus for water storage type water heater is closed at outlet valve, water tank communicates with atmosphere, only when its water outlet, water tank just bears the hydraulic pressure through the decompression constant voltage, water tank becomes pressure-bearing duty in short-term by original long-term pressure-bearing duty, and this hydraulic pressure is lower, can reduce the withstand voltage standard of water tank, thereby reduce the water tank wall thickness and save cost and resource, water tank, is difficult for by corrosion at high pressure conditions without long-term work, prolong the service life of water tank, improve its security performance; Though this water control apparatus for water storage type water heater is the open type state when not water outlet, can realize that equally central authorities supply water, so, long, safety of life-span not only, and easy to use, simple in structure.And the segmentation scheme in the utility model can use under the situation of water quality extreme difference.

Description of drawings

Fig. 1 is the internal structure schematic diagram of the embodiment one of water control apparatus for water storage type water heater described in the utility model.

Fig. 2 is the internal structure schematic diagram of the embodiment two of water control apparatus for water storage type water heater described in the utility model.

Fig. 3 is a kind of connection diagram of water control apparatus for water storage type water heater described in the utility model when being installed on the water heater.

Fig. 4 is the another kind of connection diagram of water control apparatus for water storage type water heater described in the utility model when being installed on the water heater.

Fig. 5 is the enlarged drawing of the transfer valve stator of the used water control apparatus for water storage type water heater of Fig. 3.

Fig. 6 is the enlarged drawing of the transfer valve moving plate of the used water control apparatus for water storage type water heater of Fig. 3.

Fig. 7 is the enlarged drawing of the transfer valve stator of the used water control apparatus for water storage type water heater of Fig. 4.

Fig. 8 is the enlarged drawing of the transfer valve moving plate of the used water control apparatus for water storage type water heater of Fig. 4.

Fig. 9 is the internal structure schematic diagram of the embodiment three of water control apparatus for water storage type water heater described in the utility model.

Figure 10 is the internal structure schematic diagram of the embodiment four of water control apparatus for water storage type water heater described in the utility model.

Figure 11 is the internal structure schematic diagram of the embodiment five of water control apparatus for water storage type water heater described in the utility model.

Figure 12 is the internal structure schematic diagram of the embodiment six of water control apparatus for water storage type water heater described in the utility model.

The specific embodiment

Embodiment one, see Fig. 1, described water control apparatus for water storage type water heater is in holding state, it comprises the glued membrane 2 that connects support 3, valve body 1, transfer valve 7 and use as expansion wall, the lumen openings place of valve body 1 accompanies glued membrane 2 and fiber cloth 5 with being connected between the support 3, valve body 1 surrounds expansion chamber 10 with glued membrane 2; Fiber cloth 5 arranged outside heads 401, this head 401 is a cambered surface towards the one side of fiber cloth, head 401 is fixed on the control lever 4 of control transfer valve 7, control lever 4 is provided with spring 8 with being connected between the support 3, the elastic force of spring 8 passes to glued membrane 2 by head 401, the fiber cloth 5 of control lever, also be that control lever 4 is installed between spring 8 and the glued membrane 2, when so glued membrane 2 moves up and down, make also and then motion of control lever 4 by glued membrane 2 and spring 8, the interaction that is connected support 3, thereby glued membrane is realized the control to control lever; Valve body 1 is provided with intake antrum 100 and apopore 102, is provided with valve opening 101 between intake antrum 100 and the expansion chamber 10, and intake antrum 100 connects running water pipe, apopore 102 picks out water valve; Be provided with in the valve body 1 by the elastic force effect of spring 9 and block the piece 6 that blocks water of valve opening 101; Connect support 3 and be provided with the recess that matches with head 401 peripheries to limit the outwards outermost position of (among the figure for upwards) motion of head 401, this recess is an annular cambered surface 301 to the inboard that connects between the support outer rim, when control lever outwards moves to outermost position (position as shown in Figure 1), the cambered surface outer ring of the inner ring of annular cambered surface 301 and control lever head 401 roughly joins and forms a streamlined curved surface, to glued membrane 2 and 5 support positioning actions of fiber cloth, improve the voltage endurance capability of glued membrane and fiber cloth, 6 the spacing guide effects of piece that block water of 104 pairs of guide pad 103 in the valve body and limited blocks, the boss 402 on the control lever plays the qualification effect with connecting support 3 outsides to the lower position of control lever 4; Tooth bar 403 on the control lever cooperates with tooth on the switch lever of transfer valve 7, and transfer valve is moved with tooth bar.The process of the glued membrane 2 control transfer valves 7 and the piece 6 that blocks water is: when opening outlet valve, water in the expansion chamber flows out through apopore 102, water in the intake antrum can only be by the less clearance moisturizing in expansion chamber that blocks water between piece 6 and the valve opening 101, so, drops in the expansion chamber 10, spring 8 in the state shown in Figure 1 moves downward by the head 401 promotion glued membranes 2 of control lever 4, control lever 4 control transfer valve 7 changes user mode over to from holding state, then, glued membrane 2 contacts with piece 6 tops that block water and promotes to block water piece 6 to move downward and open valve opening 101, increase the cross section of intake antrum 100 to the intake tunnel of expansion chamber 10, at this moment, press in the elastic force of openings of sizes between piece and the valve opening of blocking water and spring 8 and the expansion chamber and the malleation lifting surface area of glued membrane relevant, water control apparatus for water storage type water heater is equivalent to a decompression constant pressure valve, its principle can reference, on June 14th, 2000, the Chinese patent of bulletin was announced among the CN2382909Y disclosed " water intaking valve ", when closing outlet valve, hydraulic pressure in the expansion chamber increases, and glued membrane 2 moves up, control lever moves on also following, the piece 6 that blocks water moves under the effect of spring 9 and resets to as shown in Figure 1, valve opening 101 is blocked fully, exist the gap because of blocking water between piece and the valve opening this moment, move on glued membrane continues, control lever 4 makes transfer valve 7 reset to holding state from user mode.After also spring 9 can being taken away among Fig. 1 embodiment, if the proportion of the piece 6 that blocks water less than water, then can make progress as control lever among the figure, valve body is placed downwards, the piece that blocks water is positioned under buoyancy; As the proportion of the piece that blocks water then can place conversely greater than water, and the piece that blocks water navigates to shown position under the self gravitation effect; Also promptly replacing elastic force with gravity or buoyancy, is general general knowledge, does not do to state at this more.

Fig. 3 is a kind of connection diagram of water control apparatus for water storage type water heater described in the utility model when being installed on the water heater.Water control apparatus for water storage type water heater 31 among Fig. 3 is water control apparatus for water storage type water heater described in the utility model, its employed transfer valve 40 is made of shell, switch lever, stator and moving plate, wherein stator is fixed in the shell, moving plate cover the stator upside and with the switch lever interlock, the outward appearance of stator, moving plate is respectively as Fig. 5, shown in Figure 6; With structure shown in the 31 employing embodiment one of the water control apparatus for water storage type water heater among Fig. 3 is that example is described further, so, transfer valve 7 among Fig. 1 is same transfer valve with the transfer valve 40 among Fig. 3, among Fig. 5 the hole 182 of stator 181 connect cold water pipe 35, hole 183 connect mix water cooling tube 33, hole 184 connects overflow pipe 34, apopore 102 connects the cooling water inlet that mixes water valve 37 through mixing water cooling tube 33, hot-water line 36 is connected between the hot water inlet of water tank 39 and mixed water valve 37, and water inlet pipe 32 is connected between intake antrum 100 and the running water pipe; Moving plate 191 among Fig. 6 is provided with groove 193 towards stator 181 1 sides, when water control apparatus for water storage type water heater 31 is in holding state shown in Figure 1, the groove 193 of moving plate 191 is communicated with hole 182 and hole 184, be that transfer valve 7 communicates cold water pipe 35 and cold water pipe 35 is obstructed with mixed water cooling tube 33 with overflow pipe 34, mix water valve 37 and close, the water in cold water pipe 35, water tank 39 and the hot-water line 36 communicates with atmosphere through overflow pipe 34; The peak of overflow pipe 34 is higher than the peak of water tank 39; When opening when mixing water valve 37, first via current are through water inlet pipe 32, intake antrum 100, valve opening 101, expansion chamber 10, delivery port 102, mix and flow out along the outlet that mixes water valve after water cooling tube 33 enters the cooling water inlet that mixes water valve 37, water control apparatus for water storage type water heater 31 actions, control lever 4 is descending and drive transfer valve action under the effect of spring 8, moving plate 191 clockwise rotates, groove 193 is separated with hole 184, intercommunicating pore 182 and hole 183 on the contrary, transfer valve enters user mode, the piece 6 that blocks water that glued membrane 2 continues will to block when descending valve opening 101 sides is depressed and is opened valve opening 101, at this moment, first via current are strengthened, simultaneously the second road current are from mixing water cooling tube 33 through the hole 183, groove 193, hole 182, cold water pipe 35 enters water tank 39 after become outlet pipe 38 outflows of warm water through mixed water valve in the mixed water cavity of the mixed water valve 37 of hot-water line 36 inflows with after first via current mix, and water heater enters user mode; After using up water, only need close and mix water valve 37, glued membrane 2 in the water control apparatus for water storage type water heater 31 overcomes spring 8 under the water effect elastic force moves up, the piece 6 that blocks water is up under the effect of spring 9 to be reset to state shown in Figure 1 and blocks valve opening 101, water in the intake antrum 100 can only be through blocking water between piece 6 and the valve opening 101 minim gap moisturizing in expansion chamber, move on glued membrane continues that though push lever 4 up speed descend also constantly to up up to turning back to state shown in Figure 1, water control apparatus for water storage type water heater resets to holding state, and water heater also enters holding state.

Another kind of connection diagram when Fig. 4 water control apparatus for water storage type water heater described in the utility model is installed on the water heater, it is to increase a transfer valve 42 on basis shown in Figure 3, change being connected between outlet pipe 45 and the mixed water cooling tube 43 into the less throttle pipe of water flow section 44, the hot water inlet that mixes water valve picks out water pipe 45, cooling water inlet connects running water pipe.With structure shown in the 41 employing embodiment one of the water control apparatus for water storage type water heater among Fig. 4 is that example is described further, after transfer valve among Fig. 4 49 and 42 is synthesized together, the stator of employed transfer valve and the outside drawing of moving plate are as shown in Figure 7 and Figure 8, hole 182, hole 183, the hole 184 in the corresponding diagram 5 respectively, the hole among Fig. 7 282,283,284 wherein, in groove 293 corresponding diagram 6 among Fig. 8 193, its corresponding pipeline that connects is identical with Fig. 3; And the transfer valve 42 of Fig. 4 is reflected among Fig. 7 among the hole on the stator 281 285 and 286, Fig. 8 moving plate 291 on the groove 292 of stator 281 1 sides, its mesopore 285 connects hot-water line 46, hole 286 picks out water pipe 45, connect throttle pipe 44 between outlet pipe 45 and the mixed water cooling tube 43, when water control apparatus for water storage type water heater 41 is in holding state shown in Figure 1, the groove 292 of moving plate 291 disconnects hole 285 and hole 286, when user mode, the groove 292 of moving plate 291 is communicated with hole 285 and hole 286, and instant heating water pipe 46 is communicated with outlet pipe 45; The control in water route is different in the user mode of Fig. 4 and the user mode of Fig. 3, first water route in the user mode of Fig. 4 because of throttle pipe 44 internal diameters are less (but can not be too little, because when its flow during less than the flow that blocks water between piece and the valve opening then the pressure in the expansion chamber can not descend and cause the water control apparatus for water storage type water heater malfunctioning), its cool water quantity that flows to outlet pipe 45 is little, minimum to the hot water cooling that flows into by hot-water line 46, so can think that what flow in the outlet pipe 45 is hot water, the water in the outlet pipe 45 be sent into water spot after each is carried with water spot at each again mixed the water valve temperature adjustment and get final product.Transfer valve 42 among Fig. 4 also can replace with the check valve that flows to outlet pipe 45 through hot-water line 46, but because of check valve must lose interior pressure certain in the water tank (the interior pressure that promptly must increase water tank could be backed down check valve), so, compare with this programme, be a kind of more bad scheme.Deliver to a plurality of water spots of using if behind the electronic mixed water valve of 45 times terminations of outlet pipe, will warm up water again, then each is with only needing the water receiving tap can realize that central authorities supply water on the water spot, the data of relevant electronic mixed water valve disclosed among the disclosed Chinese patent bulletin CN2408396Y on November 29th, 2000, did not do to state at this more.

Certainly, below among each embodiment; If the pipe connecting method of water heater as shown in Figure 3, then its corresponding transfer valve all can use the stator and the moving plate of Fig. 5 and structure shown in Figure 6, and its principle is identical; If the pipe connecting method of water heater as shown in Figure 4, then its corresponding transfer valve all can use the stator and the moving plate of Fig. 7 and structure shown in Figure 8, and its principle is identical.

Embodiment two, and Fig. 2 is the internal structure schematic diagram of the embodiment two of water control apparatus for water storage type water heater described in the utility model; The difference of it and embodiment one only be the to block water relative position of piece 26 and valve opening 2101, water inlet 211 connects running water pipe makes intake antrum 200 communicate with running water pipe, be provided with valve opening 2101 between intake antrum 200 and the expansion chamber 210, shaft section passes valve opening 2101 and stretches between the

guide pad

2103 and 2104 in the valve body 21 for the self-closing of " ⊥ " shape piece 26 tops that block water, the piece 26 of blocking water makes its bizet block valve opening 2101 by self buoyancy, both left the sluicing gap when piece 26 that blocks water was close to valve opening 2101, have the apopore 2102 that picks out water valve on the valve body 21 equally, the part of its glued membrane more than 22 is identical with Fig. 1, its operation principle is identical with Fig. 1's, just after glued membrane 22 is depressed and finishes switching to transfer valve, glued membrane 22 overcomes the suffered buoyancy of the piece 26 of blocking water and the tap water pressure piece that will block water and to pressing down valve opening 2101 and the gap that blocks water between the piece 26 is increased, and other course of action is identical with embodiment's one; Do not do to state at this more.

Fig. 9 is the internal structure schematic diagram of the embodiment three of water control apparatus for water storage type water heater described in the utility model, as can be seen from Fig. 9, described water control apparatus for water storage type water heater, comprise and connect support 53, valve body 51, transfer valve 57 and the piston of using as expansion wall 52, be provided with the sealing ring 521 of cross section between piston 52 and the valve body 51 for " U " shape, the control lever 520 and the piece 54 that blocks water directly are fixed on the piston 52, be provided with sealing ring 541 between piston 52 and the inner core that is connected support 53, connect the support upper end and be fixed with the auxiliary valve body 55 of bringing water cavity 550 into, mobilizable slide block 56 is set in the intake antrum 550, valve opening 5101 between intake antrum 550 and the expansion chamber 510 is opened on the slide block 56, communicate with connecting leg 58 between valve opening 5101 and the expansion chamber 510, shown position is a holding state, the interior pressure of expansion chamber is with hydraulic pressure is identical from the beginning, piston 52 is connected support 53 lower ends and is limited in outermost, the block water top of piece 54 is stretched in the valve opening 5101 and is had the gap between the two, intake antrum 550 communicates with running water pipe through water inlet pipe 551, after opening the outlet valve that joins with apopore 5102, water in the expansion chamber flows out through apopore 5102, valve opening 5101 and the gap that blocks water between the piece front portion 542 are less, after hydraulic pressure in the expansion chamber drops to necessarily, piston 52 is at the downward pressure of the suffered running water of piece 54 front ends that blocks water during greater than the suffered water pressure that makes progress of piston 52, piston moves down, control lever 520 drives transfer valve 57 and is transformed into user mode, piston continues to move down, separate with valve opening 5101 the piece front portion 542 that blocks water, intake antrum increases through the water flow velocity that valve opening enters expansion chamber, the distance between piece and the valve opening of blocking water is equilibrated at a certain position to keep in the expansion chamber hydraulic balance in a certain value, certainly, do not establish spring because connect support and piston space, hydraulic balance is followed the variation of hydraulic pressure from the beginning at any time in a certain value in the described expansion chamber, and water control apparatus for water storage type water heater enters user mode; When closing outlet valve, its process is opposite; The effect of slide block 56 is anti-impurity, in the block reset process that blocks water, when impurity is stuck between piece that blocks water anterior 542 and the slide block 56, the piece that blocks water promotes slide block and moves upward, make control lever can continue to control transfer valve and reset to holding state, next time is when opening outlet valve, the piece front portion contacts with slide block because of blocking water, gap so block water between piece and the valve opening can not increase too much, and in expansion chamber after the drops, the suffered downward water pressure of slide block also is added in the piece front portion that blocks water, and has compensated to block water between piece and the valve opening because of card has impurity, the gap is slightly increased and the problem that causes the pressure differential between intake antrum and the expansion chamber to reduce.The special feature of present embodiment is that piston need not be provided with spring with being connected between support, but the power that utilizes the suffered tap water pressure of piece that blocks water in expansion chamber, to move as piston, but its shortcoming be when tap water pressure hour also less through the water yield that apopore flows out, in order to address this problem the external diameter that the internal diameter of the valve opening on the slide block 56 5101 can be designed to, make when blocking water block reset slide block 56 is made progress the top and slides a segment distance less than the piece front portion 542 that blocks water at every turn; But, had better add spring at connection support and piston space.

Embodiment four, and Figure 10 is the internal structure schematic diagram of the embodiment four of water control apparatus for water storage type water heater described in the utility model.As can be seen from Fig. 10, piston 62 as expansion wall surrounds expansion chamber 610 with valve body 61, valve body is provided with intake antrum 600 and apopore 6102, be provided with spring 63 at piston between the support 64 with being connected, the control lever 620 that is fixed on the piston is meshing with the switch lever of transfer valve 67, the switch lever of transfer valve is positioned at valve body 61, be provided with valve opening 6101 between intake antrum and the expansion chamber, also be provided with guide post 651 and limited block 621 on the control lever to lead and position-limiting action to being enclosed within outer 65 of the pieces that block water of guide post, control lever and block water and be provided with back-moving spring 652 between the piece, when piston drives control lever when up from the process that resets to shown position down, be stuck in if any impurity and block water between piece and the valve opening, the piece that then blocks water compression spring 652, make control lever can continue up and unlikely being obstructed, its operation principle is same as the previously described embodiments, does not do to state at this more.Also can make piston 62 be arranged to sealed air chamber with auxiliary force in the present embodiment as spring 63 with the space that is connected between the support 64.

Embodiment five, and Figure 11 is the internal structure schematic diagram of the embodiment five of water control apparatus for water storage type water heater described in the utility model.It comprises valve body 71, connect support 73, transfer valve 77 and as the piston 72 of expansion wall, piston 72 is provided with spring 74 with being connected between the support 73, be fixed on the change action of the control lever 720 control transfer valves 77 on the piston, surround expansion chamber 710 between piston and valve body, also be provided with intake antrum 700, apopore 7102 on the valve body, the piece 75 that blocks water is played the guide and limit piece 751 of guide and limit effect, the elastic force of spring 752 makes the piece 75 that blocks water be positioned at valve opening 7101 places; The characteristics of present embodiment are, when the piece 75 that blocks water resets under spring 752 effects, if have impurity to be stuck in valve opening 7101 and block water between the piece 75, the piece that then blocks water moves on no longer, can not influence the switch operating of control lever control transfer valve equally, its use is identical with the operating principle of other embodiment, does not do to state at this more.

Embodiment six, and Figure 12 is the internal structure schematic diagram of the embodiment six of water control apparatus for water storage type water heater described in the utility model.It is actually the piece 821 that blocks water among the embodiment shown in Figure 9 is moved on to control lever 820 bottoms, present embodiment comprises valve body 81, connection support 83, control lever 820, transfer valve 87 equally and is used as the piston 82 of expansion wall, be provided with intake antrum 800 and apopore 8102 on the valve body equally, surround expansion chamber 810 between valve body and the piston, be provided with valve opening 8101 between intake antrum 800 and the expansion chamber 810, its use is identical with Fig. 9 embodiment, so, do not do to state at this more.

Claims

1. a water control apparatus for water storage type water heater comprises valve body, connects support, expansion wall and transfer valve, it is characterized in that valve body and expansion wall surround an expansion chamber; Valve body is provided with intake antrum and apopore, wherein intake antrum connects running water pipe, the apopore that communicates with expansion chamber connects the outlet valve of water heater, be provided with valve opening between described intake antrum and the expansion chamber, be positioned at the valve opening place in the described expansion chamber and be provided with the piece that slidably blocks water, the slip of this piece that blocks water is controlled by described expansion wall; Described expansion wall is provided with spring with being connected between the support, its elastic force direction is shunk described expansion chamber; The control lever of described transfer valve is arranged on expansion wall one side and controlled by expansion wall.

2. according to the described water control apparatus for water storage type water heater of claim 1, it is characterized in that described expansion wall is to be sandwiched in body cavity opening part and the glued membrane that is connected between the support.

3. according to the described water control apparatus for water storage type water heater of claim 2, it is characterized in that described control lever is positioned at the described glued membrane outside, control lever is protruding cambered surface to glued membrane by the end face of glued membrane, and described spring is located at control lever and is connected between the support.

4. according to the described water control apparatus for water storage type water heater of claim 3, it is characterized in that described connection support is provided with limited block to limit the outwards outermost position of motion of control lever; Connect the support inboard and be provided with annular cambered surface, when control lever outwards moved to outermost position, the cambered surface outer ring of this annular cambered surface inner ring and described control lever roughly joined and forms a streamlined curved surface.

5. according to the described water control apparatus for water storage type water heater of claim 1, it is characterized in that described expansion wall is a piston, is provided with sealing ring between this piston and the body cavity.

6. according to the described water control apparatus for water storage type water heater of claim 1, it is characterized in that the water outlet direction of described valve opening is vertical with the direction of motion of the described piece that blocks water.

7. according to the described water control apparatus for water storage type water heater of claim 1, it is characterized in that the described piece that blocks water is subjected to gravity or the buoyancy of self or is arranged on the elastic force effect of the spring that blocks water between piece and the valve body and is positioned in described valve opening place.

8. according to the described water control apparatus for water storage type water heater of claim 1, it is characterized in that described piece one end that blocks water links to each other with described expansion wall.

9. according to the described water control apparatus for water storage type water heater of claim 1, it is characterized in that the water outlet direction of described valve opening is identical or parallel with the direction of motion of the described piece that blocks water, the front portion of the piece that blocks water can be stretched in the valve opening.

10. according to the described water control apparatus for water storage type water heater of claim 9, it is characterized in that described valve opening is provided with can be along the slide block of the piece direction of motion activity that blocks water, and this slide block resets by the back-moving spring that is provided with between itself and the valve body or self gravitation or buoyancy.