CN100482990C - Condensation pressure regulating water-saving valve of automatic regulating preset value - Google Patents
Condensation pressure regulating water-saving valve of automatic regulating preset value Download PDFInfo
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- CN100482990C CN100482990C CNB2007101434421A CN200710143442A CN100482990C CN 100482990 C CN100482990 C CN 100482990C CN B2007101434421 A CNB2007101434421 A CN B2007101434421A CN 200710143442 A CN200710143442 A CN 200710143442A CN 100482990 C CN100482990 C CN 100482990C
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Abstract
The present invention relates to a condensation pressure regulation water valve capable of automatically regulating preset value. It includes the following several portions: a drive motor, its motor shaft is connected with a spring pressure regulation screw rod in the valve body of said water valve, and said motor can be used for driving said spring pressure regulation screw rod and making it act, said drive motor is electrically connected with a controller; at least one spring pretightening load sensor, it can be used for reflecting decrement of spring and inputting it into controller, and comparing said decrement of spring with preset value of said controller so as to control action of said drive motor; at least one temperature sensor, it is used for measuring machine unit heat source temperature and inputting said measured temperature into controller, in said controller interior the measured temperature can be used for regulating condensation pressure preset value; and a condensation pressure regulation water valve valve-body, it utilizes the regulation of water flow of machine unit to stably control condensation pressure so as to ensure the constant water outlet temperature of machine unit.
Description
Technical field
The present invention relates to the condensation pressure regulation water valve of a heating type heat pump water-heating machine in a kind of heat-pump hot-water unit, specifically, relate to a kind of condensation pressure regulation water valve that can adjust predefined value automatically.
Background technique
In the present heat-pump hot-water unit, a heating type heat pump water-heating machine is meant and uses the side feed water flow to cross heat pump water-heating machine once, just is heated the water-heating machine that reaches the setting final temperature.In heating type heat pump water-heating machine, the Flow-rate adjustment water valve that is positioned at the unit water intake guarantees the constant of cooling water water outlet (being the water outlet of unit user side) temperature by the cooling water flow of regulating condenser.
Existing Flow-rate adjustment water valve comprises following two types:
1) temperature regulation water valve has controller and heat responsive element, can set water-exit temperature.Controller is regulated cooling water flow, to keep constant water-exit temperature according to condenser cooling water water outlet (the being the user side water outlet) temperature of heat responsive element perception.Specifically, survey water-exit temperature exactly, then drive valve, increase water flow, water-exit temperature is descended than the setting temperature height; Otherwise, then close valve, reduce water flow, water-exit temperature is raise, by constantly adjusting, make water-exit temperature level off to setting value.
The advantage of this kind temperature regulation water valve is directly to control the water-exit temperature value, can not be subjected to variation in water pressure, and factor affecting such as condenser fouling cause the unit water-exit temperature to change.Its shortcoming is because of there is cyclic process in the water route, causes water flow to regulate the hysteresis quality that detects with respect to water-exit temperature, makes that the adjustment fluctuation is big, and speed of response is slow, and the cycle is long, is difficult for stable.
2) condensation pressure regulation water valve, no controller and heat responsive element, have pressure and regulate turn-knob, manually preset pressure value is connected by the refrigerant side of the by-pass port on the valve body with the unit condenser, and condensing pressure is passed to valve body, the aperture of modulating valve in view of the above, thereby regulate the condenser cooling water flow, in the unit working procedure, regulate and keep the constant of condensing pressure, thereby keep the constant of cooling water water outlet (being the user side water outlet) temperature indirectly.Its fundamental diagram as shown in Figure 1.
The advantage of this kind condensation pressure regulation water valve is that the condensing pressure because of unit is directly passed to valve body by bypass tube, does not have hysteresis quality, makes that its governing response speed to condensing pressure is fast, precision is high, and it is little to fluctuate, and guarantees the stable of unit condensing pressure.But its shortcoming is: design of pressure is manual, can not adjust automatically, and after the initial tension of spring of valve body was set up, the condensing pressure of unit was also just fixing thereupon.For guaranteeing the maximum heating capacity of performance in the unit working procedure, condensing temperature is generally set up at the highest permission condensing pressure of compressor.In addition, there is the safe operation scope in compressor, but full season of heat pump water-heating machine heating operation, when some time period heat source temperature was low, the evaporating pressure of unit work was lower, requiring the condensing pressure predefined value to carry out corresponding the adjustment automatically according to heat source temperature reduces, otherwise, can not in time adjust because of default condensing pressure, and make the unit working state exceed compressor safe operation zone (compressor safe operation zone is as shown in Figure 4), thereby cause a hidden trouble for the operation of unit, even infringement unit.
From the above mentioned, make in domestic hot-water's the whole process at the using heat pump water-heating machine, need to control fast, accurately the water-exit temperature of heat pump water-heating machine on the one hand, on the other hand, require the heating capacity of unit to bring into play to greatest extent, simultaneously, to guarantee that also compressor always works within the safe operation scope, make the operation of unit more reliable and more stable.
Summary of the invention
The object of the present invention is to provide a kind of condensation pressure regulation water valve of automatic adjustment predefined value, to overcome the defective that exists in the known technology.
For achieving the above object, the condensation pressure regulation water valve of automatic adjustment predefined value provided by the invention is made up of drive motor, initial tension of spring sensor, condensation pressure regulation water valve valve-body, controller, temperature transducer, wherein:
One drive motor, its motor shaft is connected with spring pressure adjusting screw rod in the water valve valve-body, and drives the action of spring pressure adjusting screw rod;
Above-mentioned drive motor electrically connects a controller;
At least one initial tension of spring sensor, the decrement of reflection spring and with in its input controller, and compares with corresponding condensing pressure predefined value in this controller, thus the action of control drive motor;
One condensation pressure regulation water valve valve-body is stablized control by the flow of inlet water of regulating unit to condensing pressure, to guarantee the constant water-exit temperature of unit.
The temperature transducer of at least one measurement unit heat source temperature in the temperature value measured input controller, is adjusted the condensing pressure predefined value in this controller in view of the above.
Described condensation pressure regulation water valve, wherein, drive motor is stepper motor, brush motor, actuating motor, induction machine.
Described condensation pressure regulation water valve wherein, is connected by one speed reducer between drive motor and the spring pressure adjusting screw rod.
Described condensation pressure regulation water valve, wherein, wherein, the initial tension of spring sensor is a multiturn potentiometer, by driving mechanism and motor linkage, with the decrement of resistance value reflection spring; Or the motor coding mask, with the decrement of motor revolution coding reflection spring; Or plural position limit switch, photoelectric tube or hall switch, its a plurality of contacts are fixed in the length of spring compressed stroke passage, the decrement of multiple spot discontinuous reflection spring, and with its input controller.
Described condensation pressure regulation water valve, wherein, controller is a computer.
Described condensation pressure regulation water valve, wherein, computer is a single-chip microcomputer.
Described condensation pressure regulation water valve, wherein, wherein, predefined value in the controller gets according to operation characteristic curve of generating set, and operation characteristic curve of generating set is the operation curve that the corresponding relation with corresponding relation, condensing temperature and the condensing pressure between evaporating temperature and the condensing temperature in the heat source temperature of unit and the corresponding relation between the evaporating temperature, the compressor safe operation zone fits to.
The condensation pressure regulation water valve of automatic adjustment predefined value provided by the invention, concrete effect is as follows:
1) the present invention is applied to the heating type heat pump water-heating machine one time, can control the condensing pressure of unit quick, constant, precisely, effectively, thus the water-exit temperature of control and adjusting unit.
2) the present invention is applied to the heating type heat pump water-heating machine one time, can be according to the variation of heat source temperature, automatically regulate condensing pressure and adjust desired value (being the valve body preset pressure value), make always working within the compressor safe operation zone of heat pump water-heating machine, guaranteed stability, Security, the reliability of unit operation.
Description of drawings
Fig. 1 is known condensation pressure regulation water valve working principle schematic representation.
Fig. 2 is (multiturn potentiometer) of the present invention condensation pressure regulation water valve structural representation.
Fig. 3 is (position limit switch) of the present invention condensation pressure regulation water valve structural representation.
Fig. 4 is a compressor safe operation area schematic
Fig. 5 uses schematic representation for condensation pressure regulation water valve of the present invention in a heating type heat pump water-heating machine.
Fig. 6 is multiturn potentiometer resistance value of the present invention and unit heat source temperature (ambient temperature) graph of relation in the air-source heat pump hot water.
Embodiment
Please in conjunction with the accompanying drawings 2 and accompanying drawing 3 shown in, be the condensation pressure regulation water valve structural representation of automatic adjustment predefined value provided by the invention.
Condensation pressure regulation water valve of the present invention is on the architecture basics of prior art condensation pressure regulation water valve, is equipped with temperature transducer 1, initial tension of spring sensor 3 and drive motor 4 etc., and electrically connects a controller 2 respectively.Wherein:
Drive motor 4 can be stepper motor, brush motor, actuating motor or induction machine, being connected by one speed reducer 5 between its motor shaft and the valve body spring pressure adjusting screw rod 6, (this valve body spring pressure adjusting screw rod is a known configurations, and not the emphasis that the present invention discusses, therefore do not launch narration), by driving belt moving valve spring pressure adjusting screw rod 6 the pretightening forces of drive motor 4, thereby realize according to the automatic adjusting of heat source temperature to the default condensing pressure value of water valve with the spring in the regulation valve body 7.
Initial tension of spring sensor 3 comprises continous way initial tension of spring sensor and multiple spot discontinuous position transducer.
Continous way initial tension of spring sensor can adopt multiturn potentiometer, also can adopt the motor coding mask of reflection motor rotating cycle.Present embodiment is an example with the accurate multi-circle wirewound potentiator of WXD2-53 type pointer-type, and referring to accompanying drawing 2, it is 10 circles that this wirewound potential meter is adjusted the number of turns.If the decrement of water valve prefastening force spring is x, the number of turns of spring compression screw rod rotation (equaling the number of turns of reducing motor axle rotation) is a, rotating cycle by the continuous multiturn potentiometer of driving mechanism is b, the resistance of multiturn potentiometer is made as R, has linear relationship between each parameter, i.e. x=k1a, a=k2b, b=k3R, (k1 in the formula, k2, k3 are constant, and wherein: k1 is the pitch of spring compression screw rod to draw x=k1k2k3R; K2 is the rotating ratio of driving mechanism; K3 represents the number of turns of the required rotation of resistance value unit change amount of multiturn potentiometer), corresponding relation L=f1 (the x) (intensity of this function and spring of the decrement x of prefastening force spring and water valve initial tension of spring L, design form is relevant, selected spring, obtain according to spring type selecting parameter or actual measurement), (this function is according to the pretightening force of selected water valve for the P=f2 (L) that concerns of the condensing pressure P of unit and water valve initial tension of spring L, water flow, the performance curve that pressure falls obtains), draw the corresponding relation of potentiometer resistance value R and unit condensing pressure P: R=f (P) (obtaining) according to above-mentioned function calculation; The corresponding relation of unit heat source temperature and evaporating pressure and the coupling of unit, the model of water valve is closely related, can obtain its corresponding relation curve through the unit performance test, and the relation curve of the evaporating pressure of compressor safe operation zone decision unit and corresponding the highest condensing pressure, fit two curves, obtain unit condensing pressure P and heat source temperature T
Thermal sourceBetween relation curve, note is made P=F (T
Thermal source), finally obtain the corresponding relation R=f (F (T of potentiometer resistance value and unit heat source temperature
Thermal source)), referring to accompanying drawing 6, write control program, controller 2 calculates unit condensing pressure correspondingly according to the heat source temperature of input, is unit condensing pressure predefined value, also can calculate the potentiometer resistance value of unit condensing pressure predefined value correspondence therewith, compare with the actual measurement potentiometer resistance value of input controller 2, go to control the running of drive motor, thereby adjust the condensing pressure predefined value of water valve.And, give controller with the feedback information of adjusting by detecting the resistance value of the multiturn potentiometer that links with drive motor constantly.Motor is just changeing the increasing initial tension of spring, reduces water valve condensing pressure predefined value, and counter-rotating reduces initial tension of spring, increases water valve condensing pressure predefined value.
Multiple spot discontinuous position transducer comprises position limit switch, photoelectric tube or hall switch, with the position limit switch is example, referring to accompanying drawing 3, select for use in two compression stroke passages that are fixed in spring 7 with upper stroke switch, its effect is that the decrement of the spring 7 sensed divides several sections to be reflected into controller 2, input to the heat source temperature of controller 2 again by temperature transducer 1 perception, controller is adjusted water valve condensing pressure predefined value with the decrement of spring 7 and the corresponding relation curve of unit condensing pressure corresponding relation and unit heat source temperature and condensing pressure.
Controller 4 is a computer (such as a single-chip microcomputer), and it stores with the heat source temperature is the unit condensing pressure predefined value corresponding relation curve of variable.This curve is because of the difference of unit coupling, the difference of water valve model, the form of water valve initial tension of spring sensor is different and change, and needs carry out testing property to disposing complete unit, draw according to test result and computational analysis, become the foundation of controller control condensing pressure predefined value.
When the present invention is installed in the heat pump water-heating machine, temperature transducer 1 is placed on position that can perception unit heat source temperature and is fixed, measure heat source temperature (being air-source heat pump hot water ambient temperature, soil source heat pump water-heating machine soil temperature or source heat pump water heater water source temperature) by temperature transducer 1, and this heat source temperature value is inputed in the controller 2.
See also Fig. 5, the installation connection of condensation pressure regulation water valve of the present invention in heating type heat pump water-heating machine is identical with known technology: the A end of condensation pressure regulation water valve of the present invention connects the unit water intake, the B end is connected with the condenser water intake, and C end bypass condenser advances the fluorine mouth.
When actual motion, its working principle is: by the heat source temperature of temperature transducer perception unit, the spring indentation amount parameter of actual measurement initial tension of spring sensor, calculate the unit safety condensing pressure predefined value of heat source temperature correspondence by controller, and in view of the above drive motor is controlled, the corresponding number of turns forward or backwards turns round, initial tension of spring is adjusted, finish the setting of water valve condensing pressure predefined value, and pass through the predefined value of this automatic setting and the comparison of the actual condensing pressure value of unit that the valve body bypass is imported, drive greatly or turn down water valve, adjusting unit water flow, realization is to the stable control of unit condensing pressure, to guarantee the constant water-exit temperature of unit.
Claims (10)
1, a kind of condensation pressure regulation water valve of automatic adjustment predefined value is made up of drive motor, initial tension of spring sensor, condensation pressure regulation water valve valve-body, controller, temperature transducer, wherein:
Described drive motor is one, and its motor shaft is connected with spring pressure adjusting screw rod in the water valve valve-body, and drives the action of spring pressure adjusting screw rod;
Above-mentioned drive motor electrically connects a controller;
At least one initial tension of spring sensor, the decrement of reflection spring and with in its input controller, and compares with corresponding condensing pressure predefined value in this controller, thus the action of control drive motor;
Described condensation pressure regulation water valve valve-body is one, by the water flow of regulating unit condensing pressure is stablized control, to guarantee the constant water-exit temperature of unit;
At least one measures the temperature transducer of unit heat source temperature, in the temperature value measured input controller, in view of the above the condensing pressure predefined value is adjusted in this controller.
2, condensation pressure regulation water valve as claimed in claim 1, wherein, drive motor is stepper motor, brush motor, actuating motor or induction machine.
3, condensation pressure regulation water valve as claimed in claim 1 or 2 wherein, is connected by one speed reducer between drive motor and the spring pressure adjusting screw rod.
4, condensation pressure regulation water valve as claimed in claim 1, wherein, the initial tension of spring sensor is a multiturn potentiometer, by driving mechanism and motor linkage, with the decrement of resistance value reflection spring.
5, condensation pressure regulation water valve as claimed in claim 1, wherein, initial tension of spring sensor motor coding mask is with the decrement of motor revolution reflection spring.
6, condensation pressure regulation water valve as claimed in claim 1, wherein, the initial tension of spring sensor is plural position limit switch, photoelectric tube or hall switch, and its a plurality of contacts are fixed in the length of spring compressed stroke passage, with the decrement of multiple spot discontinuous reflection spring.
7, condensation pressure regulation water valve as claimed in claim 1, wherein, controller is a computer.
8, condensation pressure regulation water valve as claimed in claim 7, wherein, computer is a single-chip microcomputer.
9, condensation pressure regulation water valve as claimed in claim 1, wherein, the predefined value in the controller obtains according to operation characteristic curve of generating set.
10, condensation pressure regulation water valve as claimed in claim 9, wherein, operation characteristic curve of generating set is the operation curve that the corresponding relation with corresponding relation, condensing temperature and the condensing pressure between evaporating temperature and the condensing temperature in the heat source temperature of unit and the corresponding relation between the evaporating temperature, the compressor safe operation zone fits to.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007101434421A CN100482990C (en) | 2007-07-31 | 2007-07-31 | Condensation pressure regulating water-saving valve of automatic regulating preset value |
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| CNB2007101434421A CN100482990C (en) | 2007-07-31 | 2007-07-31 | Condensation pressure regulating water-saving valve of automatic regulating preset value |
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| CN101089437A CN101089437A (en) | 2007-12-19 |
| CN100482990C true CN100482990C (en) | 2009-04-29 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101900216B (en) * | 2010-08-17 | 2012-07-04 | 厦门市易洁卫浴有限公司 | Discharge mechanism capable of controlling water temperature and flow |
| CN102221111A (en) * | 2011-03-28 | 2011-10-19 | 南京梅山冶金发展有限公司 | Temperature control pressure valve and temperature control pressure valve for coke oven |
| EP2728230A1 (en) * | 2012-10-30 | 2014-05-07 | Danfoss A/S | Valve actuator device, in particular for a heating or cooling system valve |
| CN108241391B (en) * | 2018-03-22 | 2024-04-09 | 重庆筋优味农业科技有限公司 | Bean gluten liquid temperature control system |
| CN109236614B (en) * | 2018-11-01 | 2023-10-17 | 南京尚爱机械制造有限公司 | Temperature control valve for controlling cooling water flow of cylinder of piston compressor |
| CN109519576B (en) * | 2019-01-04 | 2024-07-19 | 上海金鋆制冷控制器有限公司 | Water volume pressure regulating valve |
| CN112555495A (en) * | 2020-12-25 | 2021-03-26 | 福建福清核电有限公司 | Pneumatic regulating valve spring pre-tightening force setting device and method |
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