CN2748827Y - Minute-pressure electric water heater - Google Patents
Minute-pressure electric water heater Download PDFInfo
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- CN2748827Y CN2748827Y CN 200520003606 CN200520003606U CN2748827Y CN 2748827 Y CN2748827 Y CN 2748827Y CN 200520003606 CN200520003606 CN 200520003606 CN 200520003606 U CN200520003606 U CN 200520003606U CN 2748827 Y CN2748827 Y CN 2748827Y
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Abstract
The utility model relates to a minute-pressure electric water heater with reasonable structure, easy use, safety and long service life, which can realize the central water supply, comprising a water tank, an electric heating body, a temperature controller, a controller, a water inlet pipe and a water outlet pipe. The utility model is characterized in that a water inlet electric control valve is provided between the water tank and the water inlet pipe, and a water outlet electric control valve is provided between the water tank and the water outlet pipe, and a balance electric control valve is provided between the water tank and an expansion tank or a constant-pressure tank, and a drain pipe is provided between the water outlet pipe and the water inlet pipe, of which the inner diameter is smaller than that of the water inlet pipe, a water flow sensor is arranged on a water flow checking channel which is composed between the water inlet pipe, the drain pipe and the water outlet pipe.
Description
Technical field
The utility model relates to a kind of electric heater, the minute-pressure electric heater that use in particularly a kind of family or hotel.
Background technology
The electric heater that existing family or hotel guest-room are used is divided into two kinds of closed and outlet open-types; The closed electrical water heater heating, the water inlet pipe that communicates with water tank and the outlet pipe that comprise water tank, temperature control element, safety valve, the water in the water tank is heated wherein, water tank is an obturator that only communicates with inlet tube and outlet tube, water inlet pipe communicates for a long time with running water pipe, and outlet pipe can join to realize that central authorities supply water with a plurality of taps; The tap of fetching boiling water during use, the tap through correspondence under the hydraulic pressure effect of the hot water in the water tank in running water pipe is discharged; The advantage of this closed electrical water heater is to realize that remote central authorities supply water, but shortcoming is short a, poor stability of life-span, reason is that water tank bears high hydraulic pressure for a long time, metal water tank and heating under the HTHP effect very easily by corrosion, thereby shortened its life-span, in case will blast, cause danger and safety valve is malfunctioning.And the outlet open-type electric heater is made of water storage tank, heater, temperature controller and inlet tube and outlet tube, communicate with the water storage tank other end and running water pipe of water inlet pipe one end joins, the outlet pipe one end special-purpose water valve that mixes of another termination that communicates with water tank, wherein special-purpose cold water inlet port and the running water pipe that mixes water valve joins; Disclose among the disclosed Chinese patent CN2110826U on July 22nd, 1992 by a kind of " outlet open-type electric heater ", this special use mixes water valve and can only close from the passage of running water pipe direction, and can not close the passage that joins with outlet pipe, guarantee that water tank communicates with atmosphere for a long time, when using, open the valve on the water inlet pipe, running water is in water inlet pipe enters water storage tank, water in the water storage tank flows out through outlet pipe by the hydraulic pressure of running water, valve closing when not using on the water inlet pipe, but outlet pipe still communicates with atmosphere, at this moment closed outlet pipe because of the valve on the water inlet pipe passage and communicated with atmosphere again, even the temperature controller in the water storage tank is out of control, heater is switched on for a long time, can not blast yet, so, compare with closed electrical water heater, the outlet open-type electric heater comparatively safety and life-span long; But shortcoming is to be difficult to realize that remote central authorities supply water, for example, and when electric heater is installed in the toilet, the kitchen is if use hot water, just must go to the toilet and will be installed in valve open on the intake tunnel, the toilet of also need running back after using up uses valve closing very inconvenient; In on February 12nd, 1992 disclosed Chinese patent bulletin CN2096026U, a kind of " water-storage electric heater of built-in control valve " disclosed, background technology in this patent application has been done comparatively detailed explanation to existing outlet open-type electric heater, is not going to repeat.
Summary of the invention
The purpose of this utility model be that exist in the existing electric heater or easy to use in order to solve, can realize that central authorities supply water, but the life-span is short, poor stability; Life-span is long, safe, but is to use inconvenience, can not realizes the problem that central authorities supply water, and provide a kind of rational in infrastructure, easy to use, safe, the life-span long and can realize the minute-pressure electric heater that central authorities supply water.
Technical scheme:
Realize that the utility model purpose first technical scheme is: a kind of minute-pressure electric heater, comprise water tank, electric heating element, temperature controller, controller, water inlet pipe and outlet pipe, it is characterized in that being provided with between water tank and water inlet pipe into water electric control valve; Be provided with the water outlet electric control valve between water tank and outlet pipe; Be provided with the balance electric control valve between water tank and expansion tank or the constant voltage case; Be provided with tapping pipe between outlet pipe and water inlet pipe, the internal diameter of tapping pipe is provided with water flow sensing unit less than the internal diameter of water inlet pipe on the current sense channel that constitutes between water inlet pipe, tapping pipe, outlet pipe.Described constant voltage case communicates with an air pump and is provided with pressure relief valve and pressure switch, the work of pressure switch control air pump is with tonifying Qi in the constant voltage case, and when the pressure in the constant voltage case greater than when setting value, pressure relief valve is opened pressure release, makes to keep suitable low pressure in the constant voltage case; And the variable volume of expansion tank, to absorb pressure from water tank.When the minute-pressure electric heater was in the normal state (holding state), water inlet electric control valve and water outlet electric control valve were closed, and the balance electric control valve is opened, and water tank communicates, do not communicate with running water with expansion tank or constant voltage case; When the user opens the tap that joins with outlet pipe, running water is through water inlet pipe, tapping pipe, outlet pipe flows to tap, also be to have water to flow on the current sense channel, after water flow sensing unit detects current, send signal to controller, controller is opened the water outlet electric control valve, the time-delay certain hour (so that discharge a part of water in constant voltage case or the expansion tank---because of the cross section of tapping pipe less, pressure so fetch boiling water in the outlet pipe of tap back is minimum, water in constant voltage case or the expansion tank can partly be forced out) after close the balance electric control valve again, open into water electric control valve, electric heater enters user mode, running water is through water inlet pipe, the water inlet electric control valve, water tank, the water outlet electric control valve, it is the main channel that outlet pipe flows to a road of tap, another road is through water inlet pipe, tapping pipe, outlet pipe flows to the subaisle that is of tap, in fact the main channel is in parallel with subaisle, but the flow of main channel is greater than the flow of subaisle; After the user closes tap, current on the current sense channel stop, and controller monitors after current stop by water flow sensing unit, and will intake electric control valve and water outlet electric control valve are closed, again the balance electric control valve is opened, made electric heater reenter holding state.
Described minute-pressure electric heater is characterized in that being provided with between described water inlet pipe and tapping pipe current and detects electric control valve.Electric heater is when holding state, and current detect electric control valve and open, and to open the current sense channel, electric heater is when user mode, and current detect electric control valve and close.Certainly, this current detection electric control valve also can be provided with between tapping pipe and the outlet pipe.
Described minute-pressure electric heater, it is characterized in that the delivery port of described water outlet electric control valve and the hot water mouth of electronic mixed water valve join, described tapping pipe communicates with outlet pipe after connecing the cold water outlet of electronic mixed water valve again, the Cold water tap of electronic mixed water valve can not be closed fully, is communicated with between water inlet pipe and the outlet pipe when guaranteeing holding state.
Described minute-pressure electric heater is characterized in that described water outlet electric control valve is the hot-water valve of electronic mixed water valve, and during holding state, hot-water valve is closed, and the passage between water tank and the outlet pipe is cut off; Described tapping pipe communicates with outlet pipe after connecing the cold water outlet of electronic mixed water valve again, and the Cold water tap of electronic mixed water valve can not be closed fully, is communicated with between water inlet pipe and the outlet pipe when guaranteeing holding state.
Described minute-pressure electric heater is characterized in that described water inlet electric control valve and balance electric control valve are conjoined device, this conjoined device shared valve body, a spool and have bistable automatically controlled driving mechanism and form.The bistable state of described automatically controlled driving mechanism is meant normality and user mode.
Second technical scheme of the present utility model is: a kind of minute-pressure electric heater, comprise water tank, electric heating element, temperature controller, controller, water inlet pipe and outlet pipe, and it is characterized in that being provided with between water tank and water inlet pipe into water electric control valve; The tap that joins with outlet pipe is provided with trigger switch, and this trigger switch is electrically connected or dedicated radio link with controller; Be provided with the balance electric control valve between water tank and expansion tank or the constant voltage case.When the minute-pressure electric heater was in the normal state (holding state), the water inlet electric control valve was closed, the balance electric control valve is opened, and water tank communicates, do not communicate with running water with expansion tank or constant voltage case; When the user opens the tap that joins with outlet pipe, the trigger switch action, after controller receives the signal of telecommunication or radio signal of trigger switch, the electric control valve of again the balance electric control valve being closed, intake after one time of control time-delay is opened, running water flows to tap through water inlet pipe, water inlet electric control valve, water tank, outlet pipe, and electric heater enters user mode; After the user closed tap, controller was behind the trigger switch picked up signal, and control water inlet electric control valve is closed, the balance electric control valve is opened, and electric heater reenters holding state.
The 3rd technical scheme of the present utility model is: a kind of minute-pressure electric heater, comprise water tank, electric heating element, temperature controller, controller, water inlet pipe and outlet pipe, and it is characterized in that being provided with between water tank and water inlet pipe into water electric control valve; Be provided with the check valve that flows to outlet pipe between water tank and outlet pipe, be provided with tapping pipe between water inlet pipe and outlet pipe, on the current sense channel that constitutes between water inlet pipe, tapping pipe, outlet pipe, be provided with water flow sensing unit; Be provided with the balance electric control valve between water tank and expansion tank or the constant voltage case.The internal diameter of wherein said tapping pipe only needs when opening the tap that joins with outlet pipe much smaller than the internal diameter of water inlet pipe and outlet pipe, and the current of the water inlet pipe of flowing through, tapping pipe, outlet pipe can be detected by water flow detector and get final product.When the minute-pressure electric heater is in the normal state (holding state), the water inlet electric control valve is closed, and the balance electric control valve is opened, and water tank communicates, do not communicate with running water with expansion tank or constant voltage case, because be provided with check valve between outlet pipe and water tank, so, even this moment, outlet pipe communicated with water inlet pipe through tapping pipe, but the tap water hydraulic in the outlet pipe can not pass in the water tank, so, be not subjected to the static pressure of running water in the water tank; When the user opens the tap that joins with outlet pipe, running water flows to tap through water inlet pipe, tapping pipe, outlet pipe, also be to have water to flow on the current sense channel, after water flow sensing unit detects current, send signal to controller, delaying time of controller is closed the balance electric control valve after one time again, the electric control valve of will intaking is simultaneously opened, electric heater enters user mode, the main flow of running water flows to tap through water inlet pipe, water inlet electric control valve, water tank, check valve, outlet pipe, and another road flows to tap through water inlet pipe, tapping pipe, outlet pipe; After the user closed tap, the current on the current sense channel stopped, and controller monitors after current stop by water flow sensing unit, and the electric control valve of will intaking is closed, and the balance electric control valve is opened, and makes electric heater reenter holding state.
Described minute-pressure electric heater, it is characterized in that described outlet pipe, tapping pipe, check valve meet the delivery port of electronic mixed water valve, cold water outlet, hot water mouth respectively, the Cold water tap of electronic mixed water valve can not be closed fully, is communicated with between water inlet pipe and the outlet pipe when guaranteeing holding state.
Described minute-pressure electric heater is characterized in that being provided with between described water inlet pipe and tapping pipe current and detects electric control valve.Electric heater is when holding state, and current detect electric control valve and open, and to open the current sense channel, electric heater is when user mode, and current detect electric control valve and close.
Described minute-pressure electric heater is characterized in that described water inlet electric control valve and balance electric control valve are conjoined device, this conjoined device shared valve body, a spool and have bistable automatically controlled driving mechanism and form.
Beneficial effect:
Owing to adopted technical scheme described in the utility model, electric heater in use, water tank is in closed state, and the water in the water tank flows, and presses the hydrostatic pressing much smaller than running water in water tank is suffered, so, can realize that central authorities supply water, easy to use; And during holding state when normality (also), water tank communicates with the constant voltage case that can constant voltage or the expansion tank of variable volume, make water tank at holding state, its internal pressure maintains a lower level, compare with the running water hydrostatic pressing, the suffered interior pressure of water tank is minimum, avoided water tank in the existing electric heater to be in the state of high pressure for a long time, prolonged the life-span of water tank, security is improved, and simple and reasonable for structure, integrate closed and advantage open type electric water heater, and overcome closed and shortcoming open type electric water heater.
Description of drawings
The utility model is described in further detail below in conjunction with drawings and Examples.
Fig. 1 is the internal structure schematic diagram of an embodiment of first technical scheme of minute-pressure electric heater described in the utility model.
Fig. 2 is the enlarged drawing of the internal structure when electric control valve is in the normal state among Fig. 1 embodiment.
Fig. 3 is after the spool of electric control valve shown in Figure 2 counterclockwise turns over an angle, the schematic diagram when being in user mode.
Fig. 4 is the internal structure schematic diagram of another embodiment of first technical scheme of minute-pressure electric heater described in the utility model.
Fig. 5 is the internal structure enlarged drawing when electric control valve is in the normal state among Fig. 4 embodiment.
Fig. 6 is after the spool of the described electric control valve of Fig. 5 turns over an angle counterclockwise, the state diagram when being in user mode.
Fig. 7 is the internal structure enlarged drawing when electronic mixed water valve is in the normal state among Fig. 4 embodiment.
Fig. 8 is after the spool of the described electronic mixed water valve of Fig. 7 turns over an angle counterclockwise, the state diagram when being in user mode.
Fig. 9 is the internal structure schematic diagram of an embodiment of second technical scheme of minute-pressure electric heater described in the utility model.
Figure 10 is the internal structure schematic diagram of an embodiment of the 3rd technical scheme of minute-pressure electric heater described in the utility model.
Figure 11 is the internal structure schematic diagram of another embodiment of the 3rd technical scheme of minute-pressure electric heater described in the utility model.
Figure 12 is the internal structure schematic diagram of another embodiment of first technical scheme of minute-pressure electric heater described in the utility model.
Figure 13 is a kind of internal structure schematic diagram of check valve K8 used in the 3rd technical scheme of minute-pressure electric heater described in the utility model.
Figure 14 is the internal structure enlarged diagram when electrically-controlled valve is in the normal state among Figure 11 embodiment.
Figure 15 is after the spool of the described electrically-controlled valve of Figure 14 turns over an angle clockwise, the schematic diagram when being in user mode.
Figure 16 is the internal structure enlarged diagram when electrically-controlled valve is in the normal state among Figure 12 embodiment.
Figure 17 is after the spool of the described electrically-controlled valve of Figure 16 turns over an angle counterclockwise, the schematic diagram when being in user mode.
Among the figure 1, water tank, 11, the magnesium rod, 12, water level controller, 13, electric heating element, 21, cold water pipe, 22,220, K220, M220, hot-water line, 31, water inlet pipe, 32,230,320, K230, M320, outlet pipe, 41, balance pipe, 6,9, M9, L9, electrically-controlled valve, 61,81,91, valve body, 62,82,92, spool, 211,2110,221,311,3110,321,411,41 10, the hole, 801, delivery port, 802, cold water outlet, 803, the hot water mouth, 7, water flow sensing unit, 8, M8, electronic mixed water valve, 97, K97, L97,970, M970, tapping pipe, K8, check valve, K1, valve body, K101, guiding rib, K2, valve gap, K301, valve head, K302, valve handle, K4, coil, A, the constant voltage case, A1, air pump, A2, pressure switch, A3, pressure relief valve, B, expansion tank, B1, mantle, B2, gravity block, B3, limited block, D, expansion tank, D1, piston, D2, travel switch, D3, balance pipe, E, big cylinder body, E1, big piston, E2, tube connector, F, little cylinder body, F1, valve piston, F2, tube connector, EF, connecting shaft, E3, water inlet pipe.
The specific embodiment:
Embodiment one, and Fig. 1 is the internal structure schematic diagram of an embodiment of first technical scheme of minute-pressure electric heater described in the utility model.In conjunction with Fig. 1, Fig. 2 and Fig. 3 are as seen, described minute-pressure electric heater, comprise water tank 1, electric heating element 13, temperature controller (not drawing among the figure), controller (not drawing among the figure), water inlet pipe 31 and outlet pipe 32, the water inlet electric control valve, the water outlet electric control valve, the balance electric control valve is integrated in conjoined device---in the electrically-controlled valve 6, internal structure during its normality as shown in Figure 2, hole 211 on the valve body 61,221,311,321,411 connect cold water pipe 21 respectively, hot-water line 22, water inlet pipe 31, outlet pipe 32, balance pipe 41, wherein the other end of cold water pipe 21 communicates with water tank 1, hot-water line 22 other ends stretch in the water tank 1, balance pipe 41 another terminations are positioned at the constant voltage case A at water tank 1 top, constant voltage case A communicates with air pump A1, and be provided with pressure relief valve A3 and pressure switch A2, pressure switch A2 control air pump A1's is logical, outage, and when the pressure in the constant voltage case greater than when setting value, pressure relief valve is opened pressure release, make the low pressure that keeps suitable in the constant voltage case (when electric heater is console mode, this value only needs 0.03MPa to get final product to 0.05MPa---much smaller than running water pressure at ordinary times---and 0.3MPa), the effect one of the low pressure in the constant voltage case A is to make water tank not need long-term work at high pressure conditions, the 2nd, when constant voltage case inner accumulated behind a certain amount of water, when fetching boiling water tap, because of the delaying time of controller action, so the water in the constant voltage case can utilize this pressure to extrude part water, in order to avoid constant voltage case inner product dilutional hyponatremia and overflow and wander ground through relief valve; Be fixed with water flow sensing unit 7 on the water inlet pipe 31, be used for cooperating the current situation on the current sense channel that constitutes between controller detection water inlet pipe 31, tapping pipe 97, the outlet pipe 32; The state of electrically-controlled valve 6 is a normality among Fig. 2, (corresponding water outlet electric control valve) is closed between (corresponding water inlet electric control valve) between water inlet pipe 31 and the cold water pipe 21, outlet pipe 32 and the hot-water line 22, and (corresponding balance electric control valve) is opened between cold water pipe 21 and the balance pipe 41; Electrically-controlled valve state shown in Figure 3 is the user mode of electric heater, it is spool 62 gained after rotating counterclockwise an angle under the automatically controlled drive mechanism in Fig. 2 normality, from this Fig. 3 as seen, between water inlet pipe 31 and the cold water pipe 21 (corresponding water inlet electric control valve), (corresponding water outlet electric control valve) is opened between outlet pipe 32 and the hot-water line 22, (corresponding balance electric control valve) is closed between cold water pipe 21 and the balance pipe 41, the main channel of running water is through water inlet pipe 31, hole 311 and 211, cold water pipe 21, water tank 1, hot-water line 22, hole 221 and 321, outlet pipe 32 flows to tap, subaisle is through water inlet pipe 31, tapping pipe 97, outlet pipe 32 flows to tap, and wherein the internal diameter of tapping pipe 97 is less than the internal diameter of water inlet pipe 31.In the present embodiment, as long as the tap that joins with outlet pipe 32 is opened, and running water pipe do not cut off the water, and just has water to flow on the current sense channel, and controller control electric heater enters user mode, and electric heater is in closed state; In case and tap is closed, the current sense channel does not have current up and down, and controller control electric heater enters holding state, and electric heater is in low-pressure state.Certainly, current also can be set between water inlet pipe 31 and tapping pipe 97 in the present embodiment detect electric control valve, subaisle is closed when the user mode of electric heater.
Embodiment two, and Fig. 4 is the internal structure schematic diagram of another embodiment of first technical scheme of minute-pressure electric heater described in the utility model.In conjunction with Fig. 4, Fig. 5, Fig. 6, Fig. 7 and Fig. 8 as seen, present embodiment is actually water inlet electric control valve, balance electric control valve is integrated in---in the electrically-controlled valve 9, and the water outlet electric control valve is integrated in the electronic mixed water valve 8, (wherein the detailed structure of electronic mixed water valve can disclose a kind of structure of electronic mixed water valve in more detail with reference to the Chinese patent CN2408396Y of bulletin on November 29th, 2000 in this patent); The cold water outlet 802 of electronic mixed water valve 8 by cold water pipe 970 and water inlet pipe 31 join, hot water mouth 803 by hot-water line 220 and water tank 1 join, delivery port 801 joins with outlet pipe 320, is being provided with water flow sensing unit 7 (also can be provided with on the outlet pipe 320) on the water inlet pipe 31; Termination expansion tank B on the balance pipe 41, expansion tank B is made of casing, mantle B1, gravity block B2 and limited block B3, and when the pressure in the water tank 1 was in balance pipe 41 is delivered to expansion tank B, mantle B1 expanded the expansion tank volume is increased to reduce interior pressure.Fig. 5 mesopore 3110,2110,4110 taps into water pipe 31, cold water pipe 21, balance pipe 41 respectively; When electric heater is in the normal state (seeing Fig. 5 and Fig. 7), spool 92 in the electrically-controlled valve 9 communicates the hole 4110 and 2110 on 3110 sealings of the hole on the valve body 91 (being that hole 3110 and the 2110 water inlet electric control valves that constitute are closed), the valve body 91 (being that hole 4110 and the 2110 balance electric control valves that constitute are opened), and hot water mouth's 803 sealings (the water outlet electric control valve that is equivalent among the embodiment one is closed), the cold water outlet 802 of electronic mixed water valve 8 communicate with delivery port 801; When the user opens the tap that joins with outlet pipe 320, running water is through water inlet pipe 31, the cold water outlet 802 of electronic mixed water valve and delivery port 801, outlet pipe 320 flows to tap, also be to have water to flow on the current sense channel, after water flow sensing unit 7 detects current, send signal to controller, controller switches to user mode shown in Figure 6 with electrically-controlled valve 9, hole 3110 communicates with 2110, and hole 4110 and 2110 is obstructed, intake promptly that electric control valve is opened and the balance electric control valve is closed, at this moment, controller is controlled the cold of electronic mixed water valve 8 according to the temperature sensor on the outlet pipe 320, hot water mouth's water mixing proportion (state as shown in Figure 8), running water one tunnel is through water inlet pipe 31, hole 3110 and 2110, cold water pipe 21, water tank 1, hot-water line 220, the hot water mouth 803 of electronic mixed water valve, delivery port 801 flows to outlet pipe 320, and another road is through water inlet pipe 31, cold water pipe 970, the cold water outlet 802 of electronic mixed water valve, delivery port 801 flows to outlet pipe 320; After the user closes tap, current on the current sense channel stop, and controller monitors after current stop by water flow sensing unit 7, and electrically-controlled valve 9 is switched to state shown in Figure 5, and electronic mixed water valve 8 switches back state shown in Figure 7, makes electric heater reenter holding state.
Embodiment three, and Fig. 9 is the internal structure schematic diagram of an embodiment of second technical scheme of minute-pressure electric heater described in the utility model.As can be seen from Fig. 9, present embodiment is that the electronic mixed water valve assembly of having cancelled among the embodiment two (comprises electronic mixed water valve 8, cold water pipe 970, hot-water line 220) and water flow sensing unit 7, and the outlet pipe among the embodiment two 320 directly stretched into the outlet pipe 230 that becomes in the water tank 1 among the embodiment three, and trigger switch (not drawing among the figure) is set on the tap that the delivery port with outlet pipe 230 joins, and, the expansion tank D that balance pipe D3 is connect is different with embodiment two, expansion tank D is by casing, piston D1, travel switch D2 constitutes, casing top communicates with atmosphere, the bottom meets balance pipe D3, between balance pipe D3 and cold water pipe 21, be connected to electrically-controlled valve 9, piston D1 places in the casing, when the pressure in the casing changes, piston D1 can slide along cabinet wall, and the effect of travel switch D2 is to allow controller can detect the position of piston D1; The internal structure of electrically-controlled valve 9 can be with reference to figure 5 and Fig. 6, the open and close of tap is the open and close state of corresponding trigger switch respectively, can be connected also with electric wire between trigger switch and the controller and can adopt wireless connections, when tap is opened, controller detects the state of trigger switch---opens, 9 actions of control electrically-controlled valve, make electric heater enter user mode, when tap is closed, controller detects another state of trigger switch---closes, control electrically-controlled valve 9 resets, and makes electric heater return holding state.
Embodiment four, and Figure 10 is the internal structure schematic diagram of an embodiment of the 3rd technical scheme of minute-pressure electric heater described in the utility model.As can be seen from Fig. 10, the electronic mixed water valve assembly that present embodiment has been cancelled among the embodiment two (comprises electronic mixed water valve 8, cold water pipe 970, hot-water line 220), and between outlet pipe K230 and hot-water line K220 (communicating), be provided with the check valve K8 that flows to outlet pipe K230 from hot-water line K220 with water tank 1, between water inlet pipe 31 and outlet pipe K230, establish tapping pipe K97 in addition, and use the diagram expansion tank instead, this expansion tank is made up of big cylinder body E and big piston E1, wherein big cylinder body E joins through tube connector E2 and electrically-controlled valve 9, the balance electric control valve is located between tube connector E2 and the cold water pipe 21, opening part at big cylinder body E is provided with coaxial little cylinder body F, valve piston F1 and water vat body E1 in the little cylinder body F link with connecting shaft EF, and little cylinder body F inner chamber communicates with water inlet pipe E3 with tube connector F2.The internal structure of electrically-controlled valve 9 is identical with Fig. 5, Fig. 6.When electric heater is in the normal state, the state of electrically-controlled valve 9 as shown in Figure 5, do not communicate between water inlet pipe 31 and the cold water pipe 21, and because be provided with check valve K8 between outlet pipe K230 and the hot-water line K220, so, water in the water inlet pipe 31 through tapping pipe K97 with can not pass check valve K8 after outlet pipe K230 communicates, so 1 in water tank passes through cold water pipe 21, electrically-controlled valve 9, tube connector F2 communicates with big cylinder body E, when pressing increase in the water tank, big piston promotes valve piston and moves downward with increase and water tank and the volume that the water vat body links to each other, and reduces interior pressure, and when pressure in the water tank diminishes, big piston is pushed to by valve piston, to keep certain pressure is arranged in the water tank; Under the holding state, the pressure in the water tank is much smaller than running water pressure, when the sectional area of big piston E1 is 5 times of sectional area of valve piston F1, and under the holding state, the pressure in the water tank just from the beginning 1/5th of hydraulic pressure.The operation principle of electric control valve is same as the previously described embodiments in the present embodiment, and the open and close of control tap can make electric heater be in user mode, holding state.
Embodiment five, and Figure 11 is the internal structure schematic diagram of another embodiment of the 3rd technical scheme of minute-pressure electric heater described in the utility model.Present embodiment is to add current between water inlet pipe 31 in embodiment four and the outlet pipe K230 to detect electric control valve, as shown in figure 11, tapping pipe L97 one end and outlet pipe K230 join, be provided with current between the other end and the water inlet pipe 31 detects electric control valve, these current detect electric control valve and are integrated in the same electrically-controlled valve L9 with water inlet electric control valve, balance electric control valve, its internal structure is shown in Figure 14 and 15, and balance pipe 41 tops connect constant voltage case or expansion tank (not drawing among the figure) among the figure.
Embodiment six, and Figure 12 is the internal structure schematic diagram of another embodiment of first technical scheme of minute-pressure electric heater described in the utility model.Present embodiment is actually between outlet pipe in embodiment one, tapping pipe, the water outlet electric control valve and has added electronic mixed water valve, as shown in figure 12, the delivery port of electronic mixed water valve, cold water outlet, hot water mouth pick out the outlet of the hot-water line M220 of water pipe M320, tapping pipe M970, water outlet electric control valve respectively, and balance pipe 41 tops connect constant voltage case or expansion tank (not drawing among the figure) among the figure; The internal structure of electric control valve M9 is seen Figure 16 and Figure 17.The structure of its electronic mixed water valve can be with reference to the Chinese patent CN2408396Y of bulletin on November 29th, 2000.
Figure 13 is wherein a kind of structural representation of check valve K8 used in the foregoing description.This check valve is made up of valve body K1, valve gap K2, coil K4 and spool, wherein spool is divided into valve handle K302 and sphere valve head K301, be provided with guiding rib K101 in the valve body K1 motion of valve handle K302 is play the guiding role, valve gap K2 and outlet pipe join, and valve body K1 and hot-water line join; Electric heater when normality, the state of check valve as shown in figure 11, spool acts on by gravity (can certainly add shock mount between valve handle K302 and valve gap K2), makes the sphere of valve head K301 push down the opening of valve body K1; When electric heater is in user mode, the power supply of controller closing coil K4, coil K4 upwards inhales valve handle K302, and valve head K301 separates with valve body K1, and check valve is opened.
Water flow sensing unit described in the foregoing description, can be that the part of one section non-magnetizer as outlet pipe is set on water stream channel, the turbine that is fixed with permanent magnet on the blade is set in the non-magnetizer outlet pipe, corresponding turbine place, the outlet pipe outside is Hall element fixedly, when the water in the outlet pipe flows, the turbine rotation of band permanent magnet, Hall element becomes the signal of telecommunication with the magnetic field that changes and gives controller, this is general electrical application technology, does not do to state at this more.In addition, also can use the current sensing device on the existing water outlet breaker device, as among the Chinese patent CN2392122Y of bulletin on August 16th, 2000 disclosed " the water outlet auto-power-off device of electric heater ", among the Chinese patent CN2401846Y that announced on October 18th, 2000 disclosed " electric heater water outlet power-off protector ", among the Chinese patent CN2406193Y that announced on November 15th, 2000 disclosed " electric heater water flowing breaker device "; More than three relevant electric heater water outlets or water flowing breaker device be actually water flow sensing unit be set on exhalant canal.
Claims (10)
1 one kinds of minute-pressure electric heaters comprise water tank, electric heating element, temperature controller, controller, water inlet pipe and outlet pipe, it is characterized in that being provided with between water tank and water inlet pipe into water electric control valve; Be provided with the water outlet electric control valve between water tank and outlet pipe; Be provided with the balance electric control valve between water tank and expansion tank or the constant voltage case; Be provided with tapping pipe between outlet pipe and water inlet pipe, the internal diameter of tapping pipe is provided with water flow sensing unit less than the internal diameter of water inlet pipe on the current sense channel that constitutes between water inlet pipe, tapping pipe, outlet pipe.
2,, it is characterized in that being provided with between described water inlet pipe and tapping pipe current and detect electric control valve according to the described minute-pressure electric heater of claim 1.
3, according to the described minute-pressure electric heater of claim 1, it is characterized in that the delivery port of described water outlet electric control valve and the hot water mouth of electronic mixed water valve join, described tapping pipe communicates with outlet pipe after connecing the cold water outlet of electronic mixed water valve again.
4,, it is characterized in that described water outlet electric control valve is the hot-water valve of electronic mixed water valve according to the described minute-pressure electric heater of claim 1; Described tapping pipe communicates with outlet pipe after connecing the cold water outlet of electronic mixed water valve again.
5,, it is characterized in that described water inlet electric control valve and balance electric control valve are conjoined device, this conjoined device shared valve body, a spool and have bistable automatically controlled driving mechanism and form according to claim 1 or 2 or 3 or 4 described minute-pressure electric heaters.
6, a kind of minute-pressure electric heater comprises water tank, electric heating element, temperature controller, controller, water inlet pipe and outlet pipe, it is characterized in that being provided with between water tank and water inlet pipe into water electric control valve; The tap that joins with outlet pipe is provided with trigger switch, and this trigger switch is electrically connected or dedicated radio link with controller; Be provided with the balance electric control valve between water tank and expansion tank or the constant voltage case.
7, a kind of minute-pressure electric heater comprises water tank, electric heating element, temperature controller, controller, water inlet pipe and outlet pipe, it is characterized in that being provided with between water tank and water inlet pipe into water electric control valve; Be provided with the check valve that flows to outlet pipe between water tank and outlet pipe, be provided with tapping pipe between water inlet pipe and outlet pipe, on the current sense channel that constitutes between water inlet pipe, tapping pipe, outlet pipe, be provided with water flow sensing unit; Be provided with the balance electric control valve between water tank and expansion tank or the constant voltage case.
8,, it is characterized in that described outlet pipe, tapping pipe, check valve meet the delivery port of electronic mixed water valve, cold water outlet, hot water mouth respectively according to the described minute-pressure electric heater of claim 7.
9,, it is characterized in that being provided with between described water inlet pipe and tapping pipe current and detect electric control valve according to the described minute-pressure electric heater of claim 7.
10,, it is characterized in that described water inlet electric control valve and balance electric control valve are conjoined device, this conjoined device shared valve body, a spool and have bistable automatically controlled driving mechanism and form according to claim 7 or 8 or 9 described minute-pressure electric heaters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520003606 CN2748827Y (en) | 2004-01-29 | 2005-01-15 | Minute-pressure electric water heater |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200420015219 | 2004-01-29 | ||
| CN200420015219.0 | 2004-01-29 | ||
| CN 200520003606 CN2748827Y (en) | 2004-01-29 | 2005-01-15 | Minute-pressure electric water heater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2748827Y true CN2748827Y (en) | 2005-12-28 |
Family
ID=35720319
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520003606 Expired - Fee Related CN2748827Y (en) | 2004-01-29 | 2005-01-15 | Minute-pressure electric water heater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2748827Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106440337A (en) * | 2016-10-17 | 2017-02-22 | 厦门阿玛苏电子卫浴有限公司 | Closed water boiler |
-
2005
- 2005-01-15 CN CN 200520003606 patent/CN2748827Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106440337A (en) * | 2016-10-17 | 2017-02-22 | 厦门阿玛苏电子卫浴有限公司 | Closed water boiler |
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| CF01 | Termination of patent right due to non-payment of annual fee |