CN1982803A - Controllable expander for mixed storage water heater - Google Patents

Abstract

The invention comprises a valve body, a valve deck, a plunger, an actuating unit of the plunger, a switching valve and a non-perfect close valve. The switching valve is for use in a controlled channel and the controlled channel may be a channel from the water supply pipe to the water tank of the water supply pipe to the water tank of the water heater, a channel from the water tank of the water heater to the warning pipe or a channel from the water tank to the water-mixing valve. On the valve body is disposed a plunger cavity, in which is set a plunger fitted by sliding. The valve body inner cavity, the valve deck and the plunger form an expansion cavity. An intermittent seal ring is set between the front part of the plunger capable of sliding into the cavity and the plunger cavity on the valve body. The tap-water pipe is connected with the water intake of the expansion cavity and the water outlet of the expansion cavity is connected with the discharge valve. The actuation of the switching valve is controlled by the above plunger.

Description

Controllable expander for mixed storage water heater

Technical field

The present invention relates to a kind of water heater control expansion gear, particularly a kind of controllable expander for mixed storage water heater.

Background technology

In the Chinese patent bulletin CN2743756Y of bulletin on November 30th, 2005, a kind of " open type water storage water heater " by my application disclosed, comprise water tank, the pyrogenicity element, hot-water line, outlet valve, overflow pipe, running water pipe and feed pipe, wherein feed pipe is supplied cold water to water tank, hot-water line is drawn hot water in water tank, the water inlet of outlet valve is connected to connecting leg, be connected to the by-pass valve control that prevents the current direction hot-water line in the connecting leg between connecting leg and the hot-water line outlet, be connected to the water control expansion gear between connecting leg and the running water pipe, be connected to normally closed water supply valve between connecting leg and the feed pipe; Be connected to the spilling water valve of often opening between feed pipe and the overflow pipe; The passage of running water pipe is provided with normally closed inlet valve, and water supply valve, spilling water valve and inlet valve are controlled by the expansion wall of water control expansion gear; So-called inlet valve in this patent is actually a non-complete valve-off that has the open mode section and pray for out the state section (certainly, can also be provided with the closed condition section at its end), and be with the expansion wall of piston as the water control expansion gear in the embodiment, between piston and body cavity (being plunger shaft), sealing ring must be set, this sealing ring that makes the continuous sealing between piston and the plunger shaft must increase the frictional force between piston and the plunger shaft, and stiction is greater than kinetic force of friction, so, the process of water control expansion gear contraction or expansion is not steady, and reliability is not high.

Summary of the invention

The objective of the invention is for solve the water control expansion gear course of work that exists among the existing storage water heater not steadily, reliable low problem, and provide a kind of simple in structure, stable working and the high controllable expander for mixed storage water heater of reliability.

Technical scheme:

Realize that purpose technical scheme of the present invention is: a kind of controllable expander for mixed storage water heater, comprise valve body, valve gap, plunger, the actuating unit of plunger, transfer valve and non-complete valve-off, wherein transfer valve is the valve on the controlled passage, controlled passage can be the passage from the feed pipe to the water-heater water tank, the passage of outlet from the water-heater water tank to the overflow pipe, passage from water tank to mixed water valve, it is characterized in that port and body cavity that valve gap covers body cavity surround cavity, valve body is provided with the plunger cavity that cavity is communicated with atmosphere, place the plunger that is slidingly matched in the plunger cavity, body cavity, valve gap and plunger surround expansion chamber, can slip between interior plunger front portion of described cavity and the plunger cavity on the valve body and be provided with the batch (-type) sealing ring; Running water pipe connects the inlet opening of described expansion chamber; The delivery port of described expansion chamber picks out water valve; The action of described transfer valve is controlled by described plunger.

Described controllable expander for mixed storage water heater is characterized in that described actuating unit is the spring that is arranged between plunger and the valve body.

Described controllable expander for mixed storage water heater, it is characterized in that being provided with between described expansion chamber and running water pipe non-complete valve-off with open mode section and crack state section (this non-complete valve-off can be arranged on the running water pipe or in the inlet opening of expansion chamber), the action of this non-complete valve-off is controlled by described plunger.Open outlet valve, water in the expansion chamber flows out through outlet valve, this moment, non-complete valve-off also was in crack state section, the water yield in running water pipe is mended expansion chamber is less than the water yield that flows out through outlet valve, hydraulic pressure in the expansion chamber descends, plunger moves inward (expansion chamber contraction) under the effect of actuating unit, the batch (-type) sealing ring is free between plunger and the valve body and does not seal, to reduce the frictional force between plunger and the plunger cavity, make plunger can control the transfer valve action smoothly, move to up to plunger non-complete valve-off is controlled at open mode, water heater enters user mode; After the user finishes using, when closing outlet valve, press liter in the expansion chamber, under the effect of hydraulic pressure, plunger overcomes the power of actuating unit and outwards resets, at first make non-complete valve-off enter crack state section rapidly from the open mode section, in the process that non-complete valve-off slides in crack state section, plunger control transfer valve resets, the position that the batch (-type) sealing ring returns between the plunger cavity that is clamped at plunger and valve body seals, move to outermost position and limited up to plunger, make water heater return holding state.Batch (-type) sealing ring of the present invention is meant that sealing ring is arranged on the plunger front portion, plays sealing function when sealing ring contacts with plunger cavity or valve body, and after the plunger front portion skids off plunger cavity, and sealing ring separates with plunger cavity or valve body and do not seal; Be described batch (-type) sealing ring be meant when plunger motion during to a certain position the batch (-type) sealing ring seal, the batch (-type) sealing ring does not seal when being positioned at the another location, is that the batch (-type) sealing ring is intermittently to play sealing function with plunger in different positions yet.And existing sealing ring is long-term uninterrupted sealing when sealing.

Described controllable expander for mixed storage water heater is characterized in that described non-complete valve-off is made of with the piece that blocks water that is positioned at this outside, inlet opening the inlet opening of described expansion chamber.The slip of this piece that blocks water is controlled by described plunger.The described piece that blocks water is subjected to gravity or the buoyancy of self or is subjected to the effect of elastic force and is positioned in the outside, described inlet opening.The piece that blocks water herein can not slip in the inlet opening of expansion chamber.

Described controllable expander for mixed storage water heater, it is characterized in that the piece that blocks water that described actuating unit matches for the inlet opening slip with described expansion chamber, block water and constitute non-complete valve-off between the inlet opening of piece and expansion chamber, block water piece and described plunger positive direction linkage, described plunger oppositely links with the piece that blocks water.The power of this piece that blocks water is from the pressure differential of water, when in the expansion chamber during drops, produces pressure differential in the piece both sides that block water and the piece that blocks water is moved in expansion chamber, moves inward thereby drive plunger---and be that expansion chamber shrinks.When the piece that blocks water was positioned at the expansion chamber inlet opening, non-complete valve-off was in crack state section, blocked water piece when entering in the expansion chamber after separate described inlet opening, and non-complete valve-off is in the open mode section; Piece and the plunger positive direction linkage of blocking water of the present invention is meant that the piece that blocks water moves as forward in expansion chamber from the inlet opening can drive the plunger positive movement when moving, and not necessarily drives the plunger counter motion when blocking water the piece counter motion; Plunger oppositely links with the piece that blocks water, can drive the piece counter motion that blocks water when being meant the plunger counter motion, piece turns back to and makes non-complete valve-off enter crack state section in the described inlet opening so that block water, and makes positive movement and not necessarily drive the piece that blocks water during the plunger positive movement; The block water this interlock mode of piece and plunger can make to switch to change into by the piece control that blocks water.

Described controllable expander for mixed storage water heater is characterized in that described blocking water is provided with guiding mechanism between piece and valve body or the valve gap.Its effect is to make the piece that blocks water can pass in and out described inlet opening smoothly at sliding process.

Described controllable expander for mixed storage water heater, it is characterized in that the described piece that blocks water is made of block and annular slip ring, slide and match in the inlet opening of this slip ring external diameter and described expansion chamber, in expansion chamber, be provided with and limit the limiting stand that slip ring slips into the interior position of expansion chamber, the gravity that slip ring is subjected to and the resultant direction of buoyancy are pointed to described limiting stand, the external diameter of block is greater than the internal diameter of this slip ring, this block and described plunger positive direction linkage, and described plunger and block oppositely link.Block, slip ring and inlet opening constitute described non-complete valve-off.Because the gap that is slidingly matched between slip ring and the inlet opening is minimum, so the impurity in the water can not enter in the gap between slip ring and the inlet opening, and drive block when the slip ring direction moves when plunger, even there is impurity to be stuck between block and the slip ring, block can also continue to drive slip ring and move and do not cause the water control expansion gear malfunctioning, has the function of anti-impurity.Certainly, between block and valve body or the valve gap endoporus that must just cover slip ring when attitude reference device makes block contact with slip ring must be set.

Described controllable expander for mixed storage water heater is characterized in that described block and described plunger interfix with connecting rod.

Described controllable expander for mixed storage water heater is characterized in that being provided with spring between described slip ring and the valve body, and the direction of the elastic force that slip ring is subjected to is pointed to described limiting stand.

Described controllable expander for mixed storage water heater, it is characterized in that the outer cylinder that described plunger is positioned at the front portion of described expansion chamber is provided with annular muscle, the outer O-ring seal that is enclosed within on the plunger is limited between this annular muscle and the valve body, and this O-ring seal is described batch (-type) sealing ring.The batch (-type) sealing ring seals when being clamped between this annular muscle and the valve body.

Described controllable expander for mixed storage water heater is characterized in that the described piece interior front that blocks water is stretched in the annular muscle periphery on the described plunger.To the positive direction linkage of plunger, plunger is to the reverse interlock of the piece that blocks water with the piece of realizing blocking water.

Described controllable expander for mixed storage water heater is characterized in that being provided with in the described expansion chamber slidably magnet, and this magnet is over against described plunger inboard, and the inboard of described plunger is a permeability magnetic material.

Described controllable expander for mixed storage water heater is characterized in that described magnet is U-shaped, and the bipod of this U magnet is over against described plunger inboard.When described plunger moves to certain position in expansion chamber after, U magnet is with the inside adhesive of plunger, to offset the suffered outside part water pressure of plunger, guarantee that non-complete valve-off is opened after, have certain pressure in the expansion chamber, and as long as running water possesses certain hydraulic pressure, then behind the water intaking valve of closing water heater, plunger can strive take off and U magnet between suction make plunger return, certainly, the magnetic force of magnet can not be too big, otherwise plunger can not reset.

Described controllable expander for mixed storage water heater is characterized in that being provided with secondary seal ring between described plunger rear portion and the plunger cavity.Stretch out outside the plunger cavity plunger front portion, and when the batch (-type) sealing ring did not seal, secondary seal ring sealed between plunger and plunger cavity.Make the sealing property of secondary seal ring be lower than the sealing property (frictional force between batch (-type) sealing ring and the plunger cavity is greater than the frictional force between secondary seal ring and the plunger cavity) of batch (-type) sealing ring during design, its benefit is, when water control expansion gear of the present invention is in the normal state, the batch (-type) sealing ring of high sealing performance seals, and when being in user mode, have only secondary seal ring to seal, frictional force between plunger and the plunger cavity is little at this moment, can guarantee that plunger controls the sensitivity that the piece that blocks water is opened the inlet opening openings of sizes with the variation of the hydraulic pressure in the expansion chamber, guarantee the stable of water heater water outlet current.Also be that secondary seal ring is the conventional seals circle, seal for a long time that just its sealing is lower.

Beneficial effect:

Owing to adopted technical solutions according to the invention, described controllable expander for mixed storage water heater, the batch (-type) sealing ring is set between plunger and plunger cavity, at plunger after the expansion chamber direction slips into a bit of distance, the batch (-type) sealing ring is free at once outside plunger and the plunger cavity and does not seal, the plunger of this moment and the frictional force between the plunger cavity reduce greatly, plunger can drive each valve event reposefully, the sensitivity and the reliability of plunger action have been improved, and the small current that through plunger and plunger cavity between flow out in the expansion chamber this moment can be provided with aqueduct and draw outside the water heater (existing water heater is equipped with a small amount of current of aqueduct when being used to derive the safety relief valve pressure release), during normality, the batch (-type) sealing ring can be with tight seal between plunger and the plunger cavity, though this is simple in structure, works very well.In addition, because the kinetic force of friction between plunger and the plunger cavity reduces greatly, so can utilize the power of the suffered water of the piece that blocks water of the inlet opening that is positioned at the water control expansion gear to drive plunger moves to expansion chamber, and back-moving spring can be set between plunger and valve body, so, after closing outlet valve,, also can make plunger outward move (elastic force that need not overcome described back-moving spring) and drive transfer valve and reset even tap water pressure is less.

Description of drawings

The invention will be further described below in conjunction with drawings and Examples.

Fig. 1 is the pipeline connection diagram of the embodiment one of controllable expander for mixed storage water heater of the present invention when being applied on the water heater.

Fig. 2 is the internal structure schematic diagram of water control expansion gear among Fig. 1 embodiment.

Fig. 3 is the enlarged drawing of the used still of transfer valve among Fig. 2.

Fig. 4 is the enlarged drawing of the used moving plate of transfer valve among Fig. 2.

Fig. 5 is the internal structure schematic diagram of the another kind of structure of water control expansion gear among Fig. 1 embodiment.

Fig. 6 is the enlarged drawing of the still of control valve among Fig. 5.

Fig. 7 is the enlarged drawing of the moving plate of control valve among Fig. 5.

Fig. 8 is the pipeline catenation principle figure of the embodiment two of controllable expander for mixed storage water heater of the present invention when being applied on the water heater.

Fig. 9 is the internal structure enlarged diagram of water control expansion gear among Fig. 8 embodiment.

Figure 10 is the schematic diagram of water control expansion gear when water heater is in user mode among Fig. 9.

Figure 11 is the left view of spool 26 among Fig. 9.

Figure 12 is the enlarged diagram of the another kind of structure of water control expansion gear among Fig. 8 embodiment.

Figure 13 is the part sectioned view of Figure 10 along the Y--Y line.

Figure 14 is the pipeline catenation principle figure of the embodiment three of controllable expander for mixed storage water heater of the present invention when being applied on the water heater.

Figure 15 is the pipeline catenation principle figure of the embodiment four of controllable expander for mixed storage water heater of the present invention when being applied on the water heater.

Figure 16 is another internal structure enlarged drawing (valve three does not draw) of water control expansion gear among Fig. 8 embodiment.

Figure 17 has made little another cut-away view of changing back water control expansion gear with Figure 16.

Figure 18 has made little another cut-away view of changing back water control expansion gear with Figure 16.

Figure 19 is the schematic diagram with another state of the water control expansion gear among Figure 18.

Mark among the figure, A091, water tank, A0911, hot-water line, A0921, outlet pipe, A092, mixed water valve, A0901, connecting leg, A80, water control expansion gear, A1, check valve three, A800, running water pipe, A083, valve three, A0831, overflow pipe, A0821, feed pipe, A082, valve two; A4, spring, A6, secondary seal ring, A2, plunger, A7, batch (-type) sealing ring, A8, batch (-type) sealing ring, A23, annular muscle, A22, back level, A21, prime, A3, transfer valve, A32, changer lever, A5, the piece that blocks water, A114, guide pad, A51, back-moving spring, A113, inlet opening, A112, interface, A111, delivery port, A110, expansion chamber, A11, valve gap, A12, valve body, A20, spilled water hole, A120, balance pipe; A148, still, A1481, A1482, A1483, through hole, A149, moving plate, A1491, groove; A070, valve gap, A07, control valve (non-complete valve-off), A071, valve rod, A71, still, A711, limbers, A712, the seam that sluices, A72, moving plate, A721, limbers; 01, water tank, 02, hot-water line, 06, check valve one, 061, connecting leg, 08, electronic mixed water valve, 008, mixes water pipe, 080, outlet valve, 081, delivery port, 07, check valve two, 03, feed pipe, 05, water control expansion gear, 04, running water pipe, 09, safety relief valve, 091, discharge opening; 21, delivery port four, 62, spring four, 61, the sealing micelle, 6A, the bar shaped side opening, 502, lead four, 53, pin, 6, spool four, 52, spring two, 5, spool two, 51, sealing ring two, 501, side opening, 12, delivery port two, 401, side opening, 11, the inlet opening, 7, valve body three, 72, sealing ring three, 702, interface, 71, spool three, 701, gap, 1, valve body, 3, plunger, 31, the batch (-type) sealing ring, 4, the piece that blocks water, 101, expansion chamber, 301, the annular muscle, 3A, fairlead, 3B, side opening, 2A, lead one, 503, the annular muscle, 4A, lead two, 2B, pilot hole two, 2C, axial groove two, 202, axial groove four, 201, pilot hole four, 2, valve gap; 92, valve gap, 931, connecting rod, 90C, fairlead, 90B, lead, 94, piece blocks water, 91, valve body, 911, the inlet opening, 97, valve body three, 971, spool three, 93, plunger, 93A, batch (-type) sealing ring, 90A, pipe, 912, delivery port two, 921, delivery port; 990, connecting leg, 991, mix water valve, 992, the cold water interface, 99 3, delivery port; 981, connecting leg, 982, mix water valve, 983, delivery port, 005, the water control expansion gear; 83, valve gap, 832, the guide and limit post, 830, limiting stand, 823, slip ring, 812, inlet opening, 811, interface, 822, sealing ring, 81, intermediate, 821B, annular muscle, 821A, batch (-type) sealing ring, 821, plunger, 82, valve body, 825, delivery port two, 820, expansion chamber, 813, connect the hole, 814, delivery port four, 824, block, 831, side opening, 84, U magnet; 891, plunger, 891A, batch (-type) sealing ring, 891B, annular muscle; 893, slip ring, 8820, the inlet opening, 8921, sliding part, 892A, batch (-type) sealing ring, 892, plunger, 824A, block, 84A, U magnet.

The specific embodiment:

Embodiment one, it is the pipeline connection diagram of controllable expander for mixed storage water heater of the present invention embodiment when being applied on the water heater, see Fig. 1, running water pipe A800 is connected to check valve three A1 to order between company and the A0901, water control expansion gear A80, another termination of connecting leg A0901 is mixed the cooling water inlet of water valve A092, mix the hot-water line A0911 of the hot water inlet water receiving case of water valve, the cold valves of mixing in the water valve A092 is equivalent to described outlet valve, hot water valve is equivalent to valve one,---its effect is control flows to water tank A091 through connecting leg A0901 a cold water---is equivalent to a feed water valve to meet valve two A082 between connecting leg A0901 and the feed pipe A0821, be provided with valve three A083 between water tank A091 and the overflow pipe A0831---be the spilling water valve, wherein valve three A083 and valve two A082 are integrated in the transfer valve A3 of water control expansion gear A80 and (see Fig. 2, Fig. 3 and Fig. 4), through hole A1481 among Fig. 3 on the still A148 of transfer valve, A1482, feed pipe A0821 in the map interlinking 1 of A1483 difference, overflow pipe A0831, connecting leg A0901, moving plate A149 among Fig. 4 moved on Fig. 3 still A148 then be in holding state for transfer valve, at this moment, groove A1491 on the moving plate is across between the through hole A1481 and A1482 of still, feed pipe A0821 in the connected graph 1 and overflow pipe A0831, be equivalent to valve three A083 and open, and through hole A1481 and A1483 are obstructed, being equivalent to valve two A082 closes; When transfer valve action and when entering user mode, moving plate clockwise rotate groove A1491 across between the through hole A1481 and A1483 of still, be equivalent to valve two A082 and open, and through hole A1481 and A1482 obstructed, be equivalent to valve three A083 and close.

The structure of the water control expansion gear that uses among Fig. 1 embodiment as shown in Figure 2, be in holding state, the shell of its water control expansion gear is made of valve gap A11 and valve A 12, plunger cavity is arranged on the valve A 12, plunger cavity is inner to communicate with expansion chamber A110, the outer end communicates with atmosphere by balance hole A 120, plunger cavity on the valve A 12 entangles plunger A2 body portion, be provided with secondary seal ring A6 between plunger rear portion and the plunger cavity, valve A 12 is provided with spilled water hole A20, the inlet opening A113 of expansion chamber A110 is by the delivery port of check valve three A1 of interface A112 map interlinking 1, the connecting leg A0901 of water outlet A 111 map interlinkings 1, be provided with the actuating unit of spring A4 between plunger A2 outer end and the valve A 12 as plunger, integrated valve two A082 and the valve three A083 front side that is positioned at expansion chamber A110 inner plunger A2 at the changer lever A32 of interior transfer valve A3 among Fig. 1, be provided with batch (-type) sealing ring A7 in plunger A3 front portion, the structure of batch (-type) sealing ring A7 is identical with the structure of common oil sealing.During normality, batch (-type) sealing ring A7 is positioned at plunger cavity and seals.The position that plunger A2 front portion is positioned at expansion chamber is provided with annular muscle A23, on the plunger of this annular muscle rear side, be with O-ring seal A8, this O-ring seal also is described batch (-type) sealing ring, and batch (-type) sealing ring A8 can be used to replace the effect of batch (-type) sealing ring A7.The piece A5 that blocks water, back-moving spring A51 among Fig. 2 and inlet opening A113 constitute described non-complete valve-off.

The operation principle of embodiment one: when opening the mixed water valve A092 among Fig. 1, cold water among Fig. 2 in the expansion chamber A110 is through water outlet A 111, connecting leg A0901 among Fig. 1 and the outlet pipe A0921 of mixed water valve A092 flow out, the piece A5 that blocks water among Fig. 2 also is positioned at A113 place, inlet opening, water on the running water pipe can only flow into expansion chamber A110 in the gap through blocking water between piece A5 and the inlet opening A113, the interior pressure of expansion chamber A110 descends rapidly, plunger A2 among Fig. 2 moves downward under the effect of spring A4, batch (-type) sealing ring A7 enters with the plunger front portion and separates with plunger cavity in the expansion chamber and do not seal (if when replacing A7 with batch (-type) sealing ring A8, then batch (-type) sealing ring A8 begin in expansion chamber, to have moved promptly at plunger do not seal), but secondary seal ring A6 still seals, because of the prime A21 of plunger front end and a back level A22 fall level, the changer lever A32 swing that level A22 promotes transfer valve A3 after plunger continues when descending makes the transfer valve action, moving plate A149 among Fig. 4 is clockwise rotated between the through hole A1481 and A1483 of groove A1491 on Fig. 3 still, feed pipe A0821 in the connected graph 1 and connecting leg A0901, cut off the through hole A1481 of Fig. 3 still and the path of A1482, valve three A083 that are equivalent among Fig. 1 close, valve two A082 open, transfer valve A3 enters user mode, plunger A2 among Fig. 2 continues descendingly to push away downwards up to the prime A21 piece A5 that will block water, the piece A5 that blocks water begins to separate with inlet opening A113, hydraulic pressure under the effect of spring A4 in the expansion chamber A110 is stabilized in a steady state value, water heater enters user mode, at this moment, cold water among Fig. 1 in the running water pipe A800 is through check valve three A1, interface A112 among Fig. 2 and inlet opening A113 enter in the expansion chamber A110 of Fig. 2 and are divided into two-way again after water outlet A 111 flows into the connecting leg A0901 of Fig. 1, one tunnel cooling water inlet through mixed water valve A092 enters mixed water valve, another road is through valve two A082, feed pipe A0821 enter behind the water tank A091 hot water in the water tank is pressed into enter again behind the hot-water line A0911 hot water inlet that mixes water valve A092 with from the cold water mix of mixing the water valve cooling water inlet for warm water after, flow out through outlet pipe A0921 and to use for the user; Close when mixing water valve A092, do not communicate between outlet pipe A0921 and the connecting leg A0901, do not communicate between hot-water line A0911 and connecting leg A0901 and the outlet pipe A0921 yet, the interior pressure of expansion chamber A110 increases rapidly among Fig. 2, plunger A2 make progress fast (promptly outside) move (expansion chamber of water control expansion gear expands), the piece A5 that blocks water resets to A113 place, inlet opening under the effect of back-moving spring A51, this moment from the cold water of running water pipe can only be through blocking water between piece A5 and the inlet opening A113 gap moisturizing in expansion chamber A110, press in the expansion chamber and continue to increase, plunger can continue up, back level A22 is separated with the changer lever A32 of transfer valve A3, changer lever A32 resets to holding state shown in Figure 2 under the effect of self spring, plunger A2 continues up, batch (-type) sealing ring A7 reenters seal in the plunger cavity of valve gap (perhaps batch (-type) sealing ring A8 is clamped between annular muscle A23 and the valve A 12), till plunger A2 is spacing by valve body, water heater enters holding state, at this moment, the water between secondary seal ring A6 and batch (-type) sealing ring A7 can flow out through spilled water hole A20.In order to prevent the concentrated wear of spilled water hole A20 to secondary seal ring A6, the internal diameter that the plunger cavity of valve body can be arranged in the part on figure spilled water hole A20 top causes greater than the internal diameter of bottom does not offer spilled water hole A20, at this moment, the water between secondary seal ring A6 and the batch (-type) sealing ring A7 can flow out through gap between secondary seal ring A6 and the plunger cavity and balance pipe A120.The effect of check valve three A1 among Fig. 1 is the aqueous reflux in the expansion chamber A110 and cause water control expansion gear of the present invention misoperation when preventing that running water pipe from cutting off the water.

When secondary seal ring A6 omits, plunger A2 and valve A 12 preferably adopt the material manufacturing that pottery etc. is wear-resisting, thermal coefficient of expansion is little, even this moment, water heater entered user mode, the water that flows out between plunger and plunger cavity is also few, can satisfy instructions for use in some occasion.

The non-complete valve-off with open mode section and crack state section of block water piece A5 and inlet opening A113 formation among Fig. 2 also can replace with a by-pass valve control, see Fig. 5, the outlet of check valve three A1, outlet directly enter in the expansion chamber in the import map interlinking 1 of control valve A07 at this moment, and plunger is controlled control valve A07 by promotion valve rod A071 and entered open mode or crack state.The open mode of control valve A07 and crack state are realized by the structure of still among Fig. 6 and Fig. 7 and moving plate, see Fig. 6, the outlet of check valve three A1 of the limbers A711 map interlinking 1 of still A71, be provided with the seam A712 that sluices at limbers A711 end, with on the flat still in Fig. 6 of the moving plate A72 among Fig. 7 the time, limbers A721 communicates with the A711 major part and makes control valve be in open mode, when the valve rod drive moving plate A72 of control valve rotated counterclockwise limbers A721 only across sluicing seam A712 place, control valve was in crack state.State among Fig. 5 is a holding state, and control valve A07 is in crack state, and when plunger goes downwards to when promoting valve rod A071 and clockwise rotating an angle, control valve A07 can enter open mode, and described water control expansion gear control water heater enters user mode.Certainly, the sluicing seam also can be arranged on the moving plate.

Because structure shown in Figure 5 is except that the control valve A07 that increases and valve gap A070 are slightly different, the structure and the principle of other parts are basic identical, so do not do to state at this more.

Embodiment two, be that controllable expander for mixed storage water heater of the present invention is applied in the pipeline connection diagram on the water heater, see shown in Figure 8, described water heater comprises water tank 01, electrothermal tube (be arranged in water tank---figure does not draw), hot-water line 02, three outlet valves 080, running water pipe 04 and feed pipe 03, inlet opening 11 (see figure 9)s of running water pipe 04 water receiving control expansion gear 05, on running water pipe 04, be provided with the check valve three (not drawing among the figure) that the water that prevents in the water control expansion gear 05 flows backwards to running water pipe 04, delivery port 212 (see figure 9)s of water control expansion gear 05 connect feed pipe 03, feed pipe 03 other end water receiving case 01 bottom, feed pipe 03 also is connected to safety relief valve 09, check valve 07 1 termination feed pipes 03, the cooling water inlet of the electronic mixed water valve 08 of another termination, the hot-water line 02 of drawing from water tank 01 top is interface 702 (see figure 9)s and the check valve 1 of water receiving control expansion gear 05 respectively, the hot water inlet of the electronic mixed water valve 08 of check valve one 06 another terminations, delivery port 4 21 (see figure 9)s of water control expansion gear 05 connect the cooling water inlet of electronic mixed water valve 08 by connecting leg 061, being connected to three outlet valves 080 on the mixed water pipe 008 of electronic mixed water valve 08 makes outlet valve 080 communicate with connecting leg 061 by electronic mixed water valve 08, wherein electronic mixed water valve 08 be prior art, see disclosed among the disclosed Chinese patent CN2575553Y on September 24th, 2003 " digital control electric heater Constant temp. regulating device " for details.

See Fig. 9, the water control expansion gear comprises valve body 1, valve gap 2, plunger 3, piece 4 and the described non-complete valve-off of inlet opening 11 formations block water, block water the side opening of lead 4A on the piece 4 and the pilot hole 2B on the valve gap and the barrel-shaped piece 4 that blocks water below 401 the position and inlet opening 11 inwalls between constitute described guiding mechanism, the piece 4 that blocks water simultaneously also is described actuating unit, plunger cavity in plunger 3 and the valve body 1 slides and matches, the batch (-type) sealing ring 31 of annular is arranged between the annular muscle 301 and valve body 1 of plunger front portion, the plunger front end stretches out the fairlead 3A of band side opening 3B, lead one 2A that stretches out on the endoporus of fairlead 3A and the valve gap 2 slides to match plunger movement is play the guiding role, in the inlet opening 11 of valve body, place the barrel-shaped piece of putting upside down 4 that blocks water, blocking water slides between piece 4 and the inlet opening 11 matches, block water and have side opening 401 on the sidewall of piece, block water piece the inner be provided with stretch into valve gap pilot hole two 2B in lead two 4A, inwall at pilot hole two is provided with four axial groove two 2C (seeing Figure 13), and the effect of this axial groove two 2C is to make lead two make when mobile water in the pilot hole two through these axial groove two outflows in pilot hole two; Pilot hole 4 201 on spool 46 and the valve gap slides and matches, spool four front ends are fixed with the sealing micelle 61 over against delivery port 4 21, pilot hole 4 201 inwalls are provided with axial groove 4 202 (its effect and pilot hole two 2B interior axial groove two 2C identical), pin 53 makes through the front portion that the side opening of spool 46 passes lead 4 502 that lead 4 502 is anterior to link with spool 46, and pin 53 two ends lay respectively in the relative axial groove 4 202; Wherein constitute valve two between spool 25, spring 2 52, spring 4 62, sealing ring 2 51 and the delivery port 2 12, the effect of valve two is that the water in the control water control expansion gear provides cold water through feed pipe 03 to water tank 01, so also can be water supply valve; Constitute valve four between spool 46, spring 4 62, sealing micelle 61 and the delivery port 4 21, valve four is closed after water heater enters user mode, its effect is to guarantee, the interior cold water overwhelming majority of the water control expansion gear of flowing through this moment flows into water tank through valve two, feed pipe, and can be by connecting leg and outlet valve short circuit; The spool (being spool 4 6) of the spool of valve two (being spool 2 5) and valve four is relative and be provided with spring 2 52 between the two, be provided with spring 4 62 between the opposite side of the spool (being spool 4 6) of valve four and water control expansion gear, the elastic force of spring 2 52 is greater than the elastic force of spring 4 62; The valve body 37, spool 3 71 and the sealing ring 3 72 that are fixed on valve body 1 bottom constitute valve three, the effect of valve three is that water tank 01 can be communicated with atmosphere by the spilling water passage that is made of hot-water line 02 and gap 701, so valve three also can be the spilling water valve; The piece 4 that blocks water constitutes described non-complete valve-off with inlet opening 11; Certainly, can also be provided with between spool 3 71 and the valve body 37 between the T shape head and valve body 37 that is clamped at spool 3 71 when another spring makes sealing ring 3 72 in normality.

In conjunction with Fig. 8 and Fig. 9, open outlet valve 080 during use, the water in the expansion chamber 101 of water control expansion gear 05 flows out through delivery port 4 21, connecting leg 061, electronic mixed water valve 08, outlet valve 080, delivery port 081; At this moment, water among Fig. 9 in the inlet opening 11 can only enter in the expansion chamber 101 by the minim gap through blocking water between piece and the inlet opening, described non-complete valve-off also is in crack state, current through the inlet opening 11 and the gap inflow expansion chamber 101 between the piece 4 that blocks water are minimum, hydraulic pressure in the expansion chamber 101 descends, piece 4 both sides produce pressure differential and upwards (forward) promotion of the piece that will block water blocking water, block water piece 4 by plunger 3 annular muscle 301 and the annular muscle 503 on the spool 25 with plunger 3 and spool 25 upwards top (realization block water the positive direction linkage of piece) to plunger and spool, separate (at this moment with spool 3 71 upper ends plunger 3 bottoms, if between valve body 7 and spool 71, be provided with spring, then valve three is closed), sealing ring 2 51 separates with the inner face of delivery port 2 12---and be equivalent to valve two and open, spring 2 52 promotion spools 46 drive sealing micelles 61 were closed delivery port 4 21 when spool 25 continuation were up---and be equivalent to valve four and close (at this moment, if between valve body 7 and spool 71, do not establish spring, then because the hydraulic pressure in the water tank rises a little with spool 71 upwards the top and valve three is closed), the piece 4 that blocks water continues up by the elastic force that spool 25 overcomes spring 2 52, side opening 401 on the piece 4 that blocks water exposes in the expansion chamber 101 and is equilibrated at a certain position (position as shown in figure 10), the piece 4 that blocks water enters open mode with the non-complete valve-off that inlet opening 11 constitutes, see Figure 10, at this moment, running water is through running water pipe 04, inlet opening 11, side opening 401 on the piece blocks water, expansion chamber 101, side opening 501 on the spool two, delivery port 2 12, feed pipe 03 (Fig. 8), be divided into two-way then, wherein one the tunnel is the cold water road in check valve 2 07 enters electronic mixed water valve 08, another Lu Weijing water tank 01, hot-water line 02, check valve 1 enters the hot water road in the electronic mixed water valve 08, cold water road and hot water road are mixed into warm water after mix water pipe 008 and enter outlet valve 080 and flow out through delivery port 081 and use for the user in electronic mixed water valve 08, water heater enters user mode, and its use quite and closed water heater's user mode; After finishing using, the user only need close outlet valve 080, plunger 3 downward (oppositely) is moved, plunger 3 drives the piece 4 that blocks water and moves down (realizing the reverse interlock of plunger to the piece that blocks water) and make described non-complete valve-off enter non-buttoned-up status---crack state, at this moment, the cold water at 11 places, inlet opening can only slowly enter expansion chamber 101 by the minim gap through blocking water between piece 4 and the inlet opening 11, spool 25 and spool 46 reset under the effect of spring 2 52 and spring 4 62---and be that valve two is closed with valve four and opened, go downwards to state shown in Figure 9 and the top is opened by valve three downwards spool 3 71 up to plunger 3, water heater returns holding state---be equivalent to the holding state of open-type water heater, at this moment, if the water temperature in the water tank rises, then the water in the water tank overflows through valve three---promptly through hot-water line 02, interface 702, gap 701 flows out, if valve is third-class malfunctioning and cause in the water tank pressing too high, then the safety relief valve among Fig. 8 09 is opened outside pressure release with the protection water tank; Because between plunger 3 and the valve body 1 spring need not be set, and the sealing between plunger and the valve body is by 31 sealings of batch (-type) sealing ring, so reset to state shown in Figure 9 even also can promote plunger under the situation that hydraulic pressure is extremely low from the beginning from Figure 10.In order to guarantee after outlet valve 080 is opened, there is the enough pressure piece 4 that will block water upwards to push away, can block water piece 4 side opening more than 401 the position and the inlet opening between the dash cushion rubber is set, but can not be hermetically sealed between this dash cushion rubber and the valve body, the running water at 11 places, inlet opening can be to expansion chamber 101 moisturizings when contacting with valve body with assurance dash cushion rubber.

For the ease of understanding, the spring among Fig. 24 62 is not drawn among Figure 10.Place the axial groove 4 202 in the inwall of pilot hole 4 201 of spool 46 among Fig. 9, be used at process stable steering hole 4 201 that spool four-tape movable sealing micelle 61 moves and the pressure between the expansion chamber 101.The structure of axial groove four can be with reference to the structure of axial groove two 2C in relevant pilot hole two 2B among Figure 13.

Among Fig. 9, after lead 4 502 on the spool 25 stretches in the axial hole of spool 46 central authorities, bar shaped side opening 6A on spool four passes lead 4 502 with a pin 53, make between lead 4 502 and the spool four and link, to limit the ultimate range that outwards moves mutually between spool 25 and the spool 46, make spring 2 52 that one section precommpression distance be arranged, the elastic force of spring 2 52 is greater than the elastic force of spring 4 62 at this moment, when the spool in Fig. 9 state two moves upward, by spring 2 52 spool 46 is upwards pushed away, when sealing micelle 61 withstands 46 stop motions of delivery port 4 21 back valve cores, and spool 25 can also continue to compress spring 2 52 and move up, at this moment, pin 53 is also with respect to moving on the spool four-way, and after closing outlet valve, spool two moves down into pin 53 when running into spool four downsides, and spool four and spool two continue to move down till sealing ring 2 51 is clamped between annular muscle 503 and the valve body simultaneously under spring four effects; The interaction of pilot hole 4 201 and spool four is played guide effect to the motion of spool two and spool four.In fact sealing micelle 61 can cancel, as long as spool 46 upper ends are the plane, and delivery port 4 21 the inners also get final product for the plane, at this moment, after two plane contact, expansion chamber 101 flows out the water yield of delivery port 4 21 between two planes minimum, little to the hot water influence from hot-water line 02.

Among Fig. 9, the annular muscle 301 by plunger 3 when the piece 4 that blocks water moves up drives on the plungers 3 and moves, and the piece 4 that blocks water can not drive plunger 3 when moving down and moves down, the positive direction linkage of the 4 pairs of plungers 3 of piece of having realized blocking water; And plunger 3 can drive by annular muscle 301 when moving down and block water piece 4 to moving down, and can not drive the piece 4 that blocks water when plunger 3 moves up upwards to move, and has realized that 3 pairs of the plungers piece 4 that blocks water oppositely links.Block water piece 4 and spring 2 52 and spring 4 62 actings in conjunction realize being equivalent to action control to valve two and valve four plunger valve two and valve four are realized control by control spool 25 and spool 46.

In addition, among Fig. 9, for the collision of reduce to block water piece and plunger and spool two, can be between the annular muscle of piece top and plunger that blocks water, add buffer spring between the annular muscle of block water piece top and spool two; Cross when low in order to prevent from the beginning hydraulic pressure, the piece 4 that blocks water can not overcome the elastic force of spring 252 and spring 4 62, thereby cause valve two and valve four akinesias, can between plunger 3 and valve body 37, add a secondary spring actuating unit of plunger is made of spring force and hydrodynamic force.In fact, those skilled in the art are on basis of the present invention, as long as set the working pressure range of water tank in conjunction with the ratio of the sectional area of elastic force, the tap water pressure scope of spring 2 52 and spring 4 62, block water piece 4 and plunger 3.Among Fig. 9, the spool 3 71 of valve three is after the piece 4 that blocks water moves up, because valve two is opened to make in the water tank 01 pressure is arranged, and spool 3 71 is upwards pushed away and closes, during actual the use, can between valve body 37 and spool 3 71, add another spring,, valve three initiatively be closed to guarantee that this moment, sealing ring 3 72 was clamped between the "T"-shaped head and valve body 37 of spool 3 71 bottoms.

Water control expansion gear among the embodiment shown in Figure 8 also can adopt structure shown in Figure 12, be provided with in valve body 91 inboards and join with inlet opening 911 and manage 90A, the external diameter of pipe 90A and the internal diameter of the barrel-shaped piece 94 that blocks water slide and match, link to each other with plunger 93 and realize blocking water the interlock of piece and plunger with connecting rod 931 piece 94 that will block water, the guiding mechanism be made of fairlead 90C and lead 90B is set between connecting rod 931 and valve gap 92 block water piece and plunger movement are play the guiding role, the guide effect of fairlead 3A and lead one 2A is identical among its guide effect and Fig. 9.The structure of its valve two, valve three and valve four is with shown in Figure 9 identical.Its operation principle and shown in Figure 9 similar is not going to repeat.

Embodiment three, do not use common manual to mix water valve if do not use electronic mixed water valve among Fig. 8 embodiment, then its pipeline can be connected into shown in Figure 14, the connecting leg 990 of drawing from water control expansion gear 05 directly connects the interface of hot water that mixes water valve 991 after joining with the fairlead of check valve 1, and the cold water interface 992 that mixes water valve 991 connects running water pipe (or feed pipe 03); Because after mixed water valve 991 is opened, it is opened to close early gate two at valve four, so the water in the water control expansion gear can flow out and the plunger regular event of assurance water control expansion gear through feed pipe, water tank, hot-water line, check valve one, mixed water valve, delivery port.

Embodiment four, if with spool in Fig. 946 and 61 cancellations of sealing micelle, promptly do not establish valve four, and use common manual to mix water valve as outlet valve, then its pipeline can be connected into shown in Figure 15, the interface of hot water that mixes water valve 982 connects hot-water line 02, the cold water interface is by the inner chamber of connecting leg 981 water receiving control expansion gears 005, if but will realize that central authorities supply water this moment, then Xin Zeng mixed water valve must be connected in parallel on connecting leg 981 and the hot-water line 02 with mixed water valve 982, promptly connecting leg 981 and 02 two pipes of hot-water line must be guided to the place of water simultaneously, and the embodiment that does not resemble Fig. 8 and Figure 14 only need draw a pipe.

The internal structure of the water control expansion gear among Fig. 8 also can adopt structure shown in Figure 16, and valve two and valve four are all identical with course of action with valve two and valve four structures among Fig. 9, explain no longer in addition at this; The pipeline connection layout of water heater that acts on the water control expansion gear of structure shown in Figure 16 can be with reference to Fig. 8, wherein delivery port 2 825 connects feed pipe (being equivalent to the feed pipe 03 in the map interlinking 8), delivery port 4 814 is managed (being equivalent to the connecting leg 061 in the map interlinking 8) in succession, interface 811 connects running water pipe (being equivalent to the running water pipe 04 in the map interlinking 8), in order to make drawing enough big, not drawing among Figure 16, (structure of this valve three can be identical with the structure of valve three among Fig. 9 for valve three of the present invention, itself and the connected mode of hot-water line also identical with Fig. 8 explain no longer in addition at this).Only the course of action of this water control expansion gear is explained below, see Figure 16, this water control expansion gear comprises valve body 82, valve gap 83 and intermediate 82, when in the expansion chamber 820 during drops, valve two is opened thereby plunger 821 moves up drive, valve four is closed, plunger 821 drive blocks 824 move up simultaneously, slip ring 823 also move up under buoyancy and the hydrodynamism up to being blocked by the limiting stand on the valve gap 830 with block 824 and till spacing (this moment slip ring the position can be with reference to Figure 19 in the position of slip ring 893), at this moment, because of the bipod close together of block 824 with U magnet 84 is pulled together both, make the distance that guarantees to have a minimum between block 824 and the slip ring 823, enough big to guarantee the gap between block and the slip ring, annular muscle 812B on the plunger can be opened valve two, make by block 824 and slip ring 823, the non-complete valve-off that inlet opening 812 constitutes is opened, the running water at interface 811 places annular distance in slip ring 823, space between block 824 and the slip ring 823, side opening 831 on the valve gap, company hole 813 on the intermediate 81, expansion chamber 820 enters delivery port 1 (because the valve two of this moment is opened), enter the feed pipe of water heater then, water heater enters user mode, certainly, if this moment, plunger moved on also continuing, then U magnet 84 is moving on also under the guiding of guide and limit post 832, and the gap between block and the slip ring can continue to increase; After closing the outlet valve of water heater, press liter in the valve pocket, go downwards to and be directed to limited post 832 when blocking when plunger 821 drives U magnets 84, the interior pressure of valve pocket continues to rise, and plunger is striven taken off the suction of U magnet to block, block 824 separates with U magnet, plunger can continue descending, and block contacts with the slip ring upper side, even have impurity to be stuck between block and the slip ring this moment, block also can overcome the buoyancy of slip ring and to drive slip ring descending, resets fully up to plunger.In addition, on valve body, also be fixed with self-locking sealing ring 822, the part that plunger stretches into inlet opening 812 is close in the interior ring upper end of self-locking sealing ring 822, described self-locking sealing ring is meant when the hydraulic pressure when inlet opening 812 is big more, the sealing of part that 822 pairs of plungers of sealing ring stretch into the inlet opening is good more, the sealing ring of this structure particularly is widely used on the immersible pump at most water pump, is not going to repeat.If the proportion of slip ring 893 is greater than the proportion of water among Figure 16, then only the water control expansion gear among Figure 16 need be put upside down use gets final product.

If the diameter of the plunger among Figure 16 is changed into identical with diameter in it stretches into inlet opening 812 (Figure 16), then its structure is seen Figure 17, and its course of action is identical with principle, explains no longer in addition at this.

Structure among Figure 16 also can change structure shown in Figure 180 into, its with the difference of Figure 16 also be the diameter of plunger and be connected plunger and block between the diameter of sliding part 8921 different, sliding part 8921 also slides with inlet opening 8920 and matches among Figure 18, its benefit is to drive in the descending process of slip ring 893 when block, because between block and slip ring and the sliding part volume can not change, thereby can not increase the hydraulic pressure in the inlet opening 8920 moment, plunger can be resetted smoothly.Figure 19 is the schematic diagram of the water control expansion gear among Figure 18 when entering user mode, and at this moment, U magnet just adhesive is lived water bloking piece.

Non-complete valve-off of the present invention is meant the valve with open mode section and crack state section, the flow of crack state section is far fewer than the flow of open mode section, when expanding under effect of water pressure to guarantee to close outlet valve and water control expansion gear, the third-class valve of plunger control that is subjected to of valve two and valve can reset smoothly.

Above-mentionedly can think described transfer valve about the valve among the embodiment one, valve two, valve three and valve four.

Claims (10)

1, a kind of controllable expander for mixed storage water heater, comprise valve body, valve gap, plunger, the actuating unit of plunger, transfer valve and non-complete valve-off, wherein transfer valve is the valve on the controlled passage, controlled passage can be the passage from the feed pipe to the water-heater water tank, the passage of outlet from the water-heater water tank to the overflow pipe, passage from water tank to mixed water valve, it is characterized in that port and body cavity that valve gap covers body cavity surround cavity, valve body is provided with the plunger cavity that cavity is communicated with atmosphere, place the plunger that is slidingly matched in the plunger cavity, body cavity, valve gap and plunger surround expansion chamber, can slip between interior plunger front portion of described cavity and the plunger cavity on the valve body and be provided with the batch (-type) sealing ring; Running water pipe connects the inlet opening of described expansion chamber; The delivery port of described expansion chamber picks out water valve; The action of described transfer valve is controlled by described plunger.

2,, it is characterized in that described actuating unit is the spring that is arranged between plunger and the valve body according to the described controllable expander for mixed storage water heater of claim 1.

3, according to the described controllable expander for mixed storage water heater of claim 1, it is characterized in that the non-complete valve-off with open mode section and crack state section is set between described expansion chamber and running water pipe, the action of described non-complete valve-off is controlled by described plunger.

4,, it is characterized in that described non-complete valve-off is made of with the piece that blocks water that is positioned at this outside, inlet opening the inlet opening of described expansion chamber according to the described controllable expander for mixed storage water heater of claim 3.

5, according to the described controllable expander for mixed storage water heater of claim 1, it is characterized in that the piece that blocks water that described actuating unit matches for the inlet opening slip with described expansion chamber, block water and constitute described non-complete valve-off between the inlet opening of piece and expansion chamber, block water piece and described plunger positive direction linkage, described plunger oppositely links with the piece that blocks water.

6,, it is characterized in that described blocking water is provided with guiding mechanism between piece and valve body or the valve gap according to the described controllable expander for mixed storage water heater of claim 5.

7, according to the described controllable expander for mixed storage water heater of claim 5, it is characterized in that the described piece that blocks water is made of block and annular slip ring, slide and match in the inlet opening of this slip ring external diameter and described expansion chamber, in expansion chamber, be provided with and limit the limiting stand that slip ring slips into the interior position of expansion chamber, the external diameter of block is greater than the internal diameter of this slip ring, this block and described plunger positive direction linkage, described plunger and block oppositely link.

8, according to the described controllable expander for mixed storage water heater of claim 1, it is characterized in that the outer cylinder that described plunger is positioned at the front portion of described expansion chamber is provided with annular muscle, the outer O-ring seal that is enclosed within on the plunger is limited between this annular muscle and the valve body, and this O-ring seal is described batch (-type) sealing ring.

9, described according to Claim 8 controllable expander for mixed storage water heater is characterized in that the described piece interior front that blocks water is stretched in the annular muscle periphery on the described plunger.

10, according to the described controllable expander for mixed storage water heater of claim 1, it is characterized in that being provided with in the described expansion chamber slidably magnet, this magnet is over against described plunger inboard, and the inboard of described plunger is a permeability magnetic material.

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