Background technique:
At present, electric water heater, gas water-heater all have electric control device to control water-exit temperature, generally are to control firepower according to user's setting, to reach the purpose of control water temperature, this is a kind of open loop control, and control system is not really controlled actual water temperature.And when variation in water pressure, water flow changes, and firepower does not adjust accordingly for this reason, still can cause the variation of water-exit temperature this moment, need the user to regulate temperature, therefore when hydraulic pressure is unstable, just do not accomplish thermostatically control at all by manual tune hot and cold water valve.Along with the raising of people's living standard, family central authorities hot-water supply device popularizing at home, the application of hot and cold water tap is more extensive.But the easier influence that is subjected to hydraulic pressure of central hot water service mode, such as the people being arranged in the process of taking a shower, an other people washes one's hands in the kitchen, causes cold water hydraulic pressure to descend, and causes the people who takes a shower to be ironed by hot water probably.Simultaneously, cause the impossible of artificial accurately control water temperature because hot and cold water has the time-delay of several seconds from the process that is mixed into water outlet.
Though also the someone has proposed use step motor control water temperature, be in 99111779.4 the Chinese patent application as application number, disclosed a kind of automatic microcomputerized water temperature controller, temperature to water outlet detects, single-chip microcomputer compares according to this temperature and predetermined temperature, when temperature is higher or lower than predetermined temperature, and Single-chip Controlling stepper motor forward or reverse, regulate the inflow of hot and cold water, with control water outlet water temperature; Owing to only measure the temperature of mixing water, there are not the active detecting means, can not respond the variation that water flow that variation in water pressure causes changes, causes water-exit temperature fast; And when detecting the mixing water water-exit temperature when unusual, row control again, this moment is late, leads the ordinary water temperature the user to be impacted; Thereby this device can not be difficult to be applied from deal with problems at all.
In sum, control automatically water-exit temperature, the hot and cold water flow is carried out initiatively, monitors in real time is prerequisite condition, but in the existing product, all is that flow is carried out passive manual tune basically, can't satisfy temperature automatically controlled requirement.For example, the most frequently used quick electric water heater that arrives on market, the simple often water switch of mechanism or the hydraulic pressure switch of shower control electrothermal mechanism switch, but in the time of the current shakiness, the hot water of output is sometimes hot and sometimes cold, and its reason is as follows: the flow by the current valve regulated current of open loop control, can only use under the occasion of constant pressure water supply, water supply pressure can not be stable situation under just can not stationary flow flow, cause water-exit temperature can not keep stable.When using the water flow of manually operated valve control, though can regulate current within the specific limits, but because energy measurement water flow not, the signal that offers back level heater simultaneously is a switching signal, can not constant temperature when causing hydraulic pressure low excessively.Be easy under unexpected situation, when stopping up, burn out heater such as the electric water heater generation water outlet that uses hydraulic pressure switch.
Summary of the invention:
The purpose of this utility model will overcome above-mentioned deficiency of the prior art exactly, a kind of reaction type flow promoter regulator is provided, at first can detect the valve flow of inlet water initiatively, in real time, the control to flow of the control circuit that responds the external world or carry, take second place and to detect the valve entering water temp initiatively, in real time, the extraneous or control circuit that carries of response entering water temp and even mixing water temperature are controlled in real time.
For this reason, the utility model proposes a kind of reaction type flow promoter regulator, comprise valve, described valve comprises valve rod 1, valve body 3, the flow detector 4 that also comprises valve driving mechanism 2 and be used for described valve flow is sampled, described valve driving mechanism and described valve rod mechanical connection, described flow detector is integrated on the described valve body.
Above-mentioned reaction type flow promoter regulator is also set up and is used for entering water temp testing circuit that described valve entering water temp is sampled, is integrated on the described valve body.Also comprise governor circuit 5, its temperature signal sampling input end, flux signal sampling input end are connected with the temperature signal sampling output terminal of described entering water temp testing circuit, the flux signal sampling output terminal of flow detector respectively, and the control signal output terminal of described governor circuit is connected with the control signal input end of described valve driving mechanism.Described valve body 3 preferred butterfly valves.
In the above-mentioned reaction type flow promoter regulator, described valve driving mechanism comprises micromachine 20, first gear 21 and second gear 22, described first gear is fixedlyed connected with described motor driving shaft or is become one, described second gear is fixedlyed connected with described valve rod or is become one, described first gear and second gear engagement.Described flow detector comprises that current detect impeller 41 and Hall transducer 42, described current detect impeller and are integrated in the described valve body, described Hall transducer places outside the described valve body tube wall, detect the corresponding setting of impeller with described current, its testing signal output terminal is electrically connected with described governor circuit.
The beneficial effects of the utility model are:
1, by integrated flow detector and valve driving mechanism on valve, at first can detect the valve flow of inlet water initiatively, in real time, the control to flow of the control circuit that responds the external world or carry, can with the supporting use of existing water heater, also can independently use or two the utility model matched with devices uses, constitute the water supply installation that the hot and cold water flow is regulated and control.
2, pass through the active to the valve entering water temp, the real-time detection, the control circuit that can respond the external world or carry entering water temp and even mixing water temperature are controlled in real time, can with the supporting use of existing water heater, also can independently use or two matched with devices uses of the present utility model, constitute the water supply installation that the hot and cold water flow is regulated and control.
3, two matched with devices of the present utility model are used, and constitute the water supply installation that the hot and cold water flow is regulated and control; Can control the hot and cold water flow in advance, can under the cold/temperature of heat water inlet, the continuous situation about changing of hydraulic pressure, guarantee the constant of water outlet temperature, need not automatically finishing constant water temperature control process under the situation of human intervention, quick to temperature controlled response, improved travelling comfort; Owing to adopt the ACTIVE CONTROL mode, can also avoid hot water to hurt sb.'s feelings under opposite extreme situations, (not supplying suddenly) turn-offing water intake fast such as cold water, guaranteed the Security of using process.
3, used the miniature motor of low resistance to drive, under the situation that does not have electricity or control circuit to damage also very easily the switch water tap manually control, the continuation that is unlikely to influence the user is normally used.
4, the utility model valve uses butterfly valve to replace traditional electric-controlled ball valve, has accomplished underload and response fast, greatly reduces power consumption simultaneously.
Embodiment:
Also in conjunction with the accompanying drawings the utility model is described in further detail below by specific embodiment.
Embodiment one: as shown in Figure 1, and valve and valve driving mechanism 2, flow detector 4 and entering water temp testing circuit, the governor circuit 5 integrated of comprising of the present utility model with valve.
Valve driving mechanism 2 comprises micromachine 20, first gear 21 and second gear 22, first gear and second gear are angular wheel, first gear is fixedlyed connected with motor driving shaft, and second gear is fixedlyed connected with the current Joystick, first gear and second gear engagement.It is controlled according to temperature, flow etc. by governor circuit, valve driving mechanism and valve rod 1 mechanical connection drive valve rod and rotate, and change valve folding degree, thereby change flow.Micromachine can also directly be selected the micromachine of band angular wheel for use.
Flow detector 4 comprises that current detect impeller 41 and Hall transducer 42, current detect impeller and are integrated in the valve body, Hall transducer detects the corresponding setting of impeller in the valve body outer tube wall with current, current drive the rotation of impeller, by Hall transducer the rotating speed of impeller is converted into pulse signal, offers governor circuit and converse flow.
The entering water temp testing circuit comprises temperature transducer 71 and temperature transmitting module, and temperature transducer 71 is arranged at the water inlet of valve; Be beneficial to sample as early as possible temperature signal, offer governor circuit and do corresponding control decision.
Under the artificial situation of intervening of the nothing of normally not working, device is in closed condition.When needs supply water, at first open valve by micromachine 20, detect the water temperature of advancing by temperature transducer 71 then, converting by the rotating speed that detects current impeller 41 simultaneously draws water velocity.The detected temperature of entering water temp testing circuit, flow detector, flux signal insert the signal input part of governor circuit respectively, offer governor circuit and do control decision, the control signal output terminal of governor circuit connects the control signal input end of valve driving mechanism, the control valve driving mechanism is carried out corresponding action, to regulate flow.
Shown in the assembly structure schematic representation of this routine valve part of Fig. 2, be followed successively by penstock 31, seal ring support 32, rubber sealing ring parts 33, butterfly valve fixedly current detection impeller 42, impeller bearing 38, the water output duct 39 of guide hole 34, switch video disc 35 (comprising valve rod 1), interior magnet, be integrated in the assembly 36, form the valve body of a band flow detector.
Fig. 4 is the circuit theory diagrams that comprise governor circuit, temperature transmitting module etc. in the present embodiment, and J1 is the LCD LCD MODULE, and Liquid Crystal Module uses general serial line interface, under the little situation of data volume, is drawn out to suitable position with interface and installs.Q10, Q11 are mirror-image constant flow sources, and the usefulness of temperature transmitting module thermometric degree is provided.
U1, U2 are power supply low differential pressure Voltage stabilizing modules, guarantee the stable of power supply supply.U3 is the MCU of governor circuit, and MG1, MG2 are the motor driving bridges.The motor driving bridge contains the inductor of position feedback control, can respond to the folding degree in real time.S1, S2, S3 are push-button switch, system's main switch/temperature regulation and setting.HALL1, HALL2 are the flow transmitting module.The change of two-way temperature is sent, the change of two-way flow is sent, the two-way motor driven owing to be provided with in the circuit, and convenient it is extended to controlled automatically to hot and cold water.
Embodiment two: this example is with embodiment one difference, for preventing flow backwards, sets up one-way valve in the water inlet of butterfly valve.
Embodiment three: this example is that with embodiment one difference consider the casting process at water tap, the water flow measurement impeller is difficult to be installed to the position of corner, adopts the feed-through locations that is set directly at the valve water inlet.
Below be the exemplary applications of the utility model device:
As shown in Figure 3, be that two matched with devices of the present utility model are used, save a governor circuit 5, only dispose a governor circuit, and the position will be set adjust slightly to 51 places, constitutes the structural representation of a numerical control active constant temperature water supply tap.Two device of the present utility model drainage hot and cold water mixing respectively, discharge mixing water from depotition cock 9, depotition cock is provided with two water outlets, a leading water outlet is used for directly discharging mixing water, one is used to be connected to shower douch for the shower head water outlet, also be provided with current diverter switch 91, be used for water outlet is switched between two water outlets;
The folding degree of left and right sides valve accurately is controlled at appropriate scope by algorithm makes the temperature of water outlet remain within the setting range.In order to increase the levels of precision of system, set up the water-exit temperature testing circuit and detect the water outlet water temperature as further accurately control; The water outlet temperature sensing circuit comprises water outlet temperature transducer 61 and temperature transmitting module, and temperature transducer 61 is arranged at the water outlet place of depotition cock, and water intake entering water temp, water outlet water-exit temperature signal offer governor circuit respectively.Fixedly connected valve Joystick on the valve rod 1, so that system's power down or when not needing to control automatically, can manual tune water flow.
Also set up the water outlet current and force switching mechanism 8, control by governor circuit; Comprise micromachine 81, gear 82 and tooth bar, gear is fixedly set in the live axle of motor, and tooth bar is integrated in current diverter switch 61, the wheel and rack engagement.
Above-mentioned governor circuit, water intake temperature sensing circuit and water outlet temperature sensing circuit temperature transmitting module, valve driving mechanism etc. be integrated into a thick film module, in assembly process, be assemblied in the can at rear of water tap, install from bottom to top, seal with seal ring.The 7.2V lithium rechargeable battery is adopted in the power supply supply, and the replacing of battery also is to design on the limit of module, and battery design has waterproof ring, installs from the bottom up, and contact point of power source has self-locking mechanism, clicks battery locking, clicks battery and ejects.For by the temperature of cold and hot water inlet, the detection of flow, can obtain the temperature of mixing water: because no matter cold water or hot water, its specific heat is identical, and then the temperature of equal volume is that the water of X is the water mixing of Y with temperature, and the temperature of mixing water is (X+Y)/2.Around this principle, then can derive the water of water root Y temperature that flows through the X temperature of identical caliber with same flow velocity and mix the back temperature and be (X+Y)/2, if the flow velocity difference is A such as the flow velocity of the water of X temperature, the flow velocity of the water of Y temperature is B, and then the temperature of mixing water is exactly (AX+BY)/(A+B).
The pressure that the most normal problem of running into is exactly cold water or hot water in normal the use descends suddenly, the temperature variation that causes water outlet, influence is taken a shower even, owing to should be provided with a current detection device with example, so when running into such situation, need not wait until that water outlet is checked through the folding degree that initiatively reduces the valve of another water supply line under the unusual situation of water temperature, reaches the stable purpose of holding temperature.Slowly increase the folding degree of the valve of pressure decline then simultaneously, safeguard the pressure of water outlet as far as possible.The control of cold water hot water flow is earlier open-minded among a small circle to the valve of cold water by governor circuit, the corresponding simultaneously valve of opening hot water among a small circle, and mixing water will slowly begin to increase until water velocity and the temperature of setting from small water flow.
After should replacing the water tap of traditional mechanical type manual temperature adjustment with example, the user can regulate the water temperature that needs in advance, starts governor circuit then, and water outlet water outlet this moment is the tap mouthful water outlet from the lower end, so that the user tests water temperature, do further temperature regulation.After temperature, flow data collector, processing, Control work, water temperature reaches the temperature that the user needs.This moment, the user can select by shower head water outlet (basket strainer) water outlet, or by the leading water outlet of the lower end bathtub that discharges water.In the shower process, the water temperature that induces the mouth of a river that microprocessor and sensor can be real-time drives butterfly valve by miniature motor, the flow of control hot and cold water, thus the water temperature that guarantees water outlet is constant on the temperature that the user sets.Finish in user's shower, can automatically water-out manners be set back by lower end water outlet water outlet, water temperature when simultaneously memory internal is closed can be automatically when use next time begins to regulate for the user by preceding water temperature when once closing, and avoids each use all will debug the loaded down with trivial details of temperature again.When the electricity shortage of governor circuit power supply, can give the user with the low voltage alarm, remind the user to change battery.Simultaneously, the user can oneself set high and low temperature control temperature limitation, guarantees that water temperature closes water valve under too high and low excessively situation, avoids causing scald or frostbite.Under the situation of governor circuit outage, do not influence the mode of traditional mechanical type manual temperature adjustment, do not influence the user and normally use shower set.If hotels etc. need long-term this product of use, can adopt ABAP Adapter to power for a long time, avoid often changing the trouble of battery.This design volume is little, is convenient to replace the tap of various showers, and price is low, can meet civilian cost requirement fully.