CN105588336A - Water heater and control method thereof - Google Patents
Water heater and control method thereof Download PDFInfo
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- CN105588336A CN105588336A CN201410635216.5A CN201410635216A CN105588336A CN 105588336 A CN105588336 A CN 105588336A CN 201410635216 A CN201410635216 A CN 201410635216A CN 105588336 A CN105588336 A CN 105588336A
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Abstract
The invention provides a water heater and a control method of the water heater. The water heater comprises a heat pump heating system and an electric heating system. The control method of the water heater comprises the steps of obtaining environmental parameters of the environment where the water heater is located; matching the environmental parameters with a plurality of preset execution conditions to obtain execution conditions matched with the environmental parameters; according to the matched execution conditions, determining control modes corresponding to the environmental parameters, wherein control parameters used for adjusting the running state of the heat pump heating system and/or the electric heating system are preset in the control modes; and according to the preset control parameters presetin the determined control modes, adjusting the running state of the heat pump heating system and/or the electric heating system. According to the scheme, the control modes corresponding to the environmental parameters are used for adjusting the running state of the water heater, and therefore the parameters can be flexibly controlled according to the specific use environment; and on one hand, the water using requirement of a user can be met, and on the other hand, work efficiency and use reliability of the water heater can be improved.
Description
Technical field
The present invention relates to field of water heaters, particularly relate to a kind of water heater and control method thereof.
Background technology
Hot water is people's daily necessities, but traditional water heater (electric heater, gas heater)There is the shortcomings such as energy consumption is large, expense is high, seriously polluted, and solar water heater is subject to the system of meteorological conditionApproximately.
For above problem, in prior art, there is Teat pump boiler, taking electric energy as power from low temperature side draughtHeat-obtaining amount heats domestic water, to provide to user.
Teat pump boiler can use taking air, water, solar energy, underground heat etc. as low-temperature heat source, wherein airSource heat pump water heater is that wherein combination property better and is not subject to the one of environmental limitations. The air-source of prior artTeat pump boiler is mainly by compressor, heat exchanger, fan, attemperater, water pump, fluid reservoir, mistakeThe compositions such as filter, electric expansion valve and electronic automatic controller, its operation principle is: outdoor air is by emptyGas heat exchanger carries out heat exchange, and the air after temperature reduces is discharged by fan, the refrigeration work in air heat exchangerMatter heat absorption vaporization is inhaled into compressor, and this low pressure working fluid gas compression is become high temperature, gases at high pressure by compressorSend into current heat exchanger, carry out condensation liquefaction, simultaneously the water of attemperater is forced the pumping current of flowing through by water pumpHeat exchanger, absorbs heat. The refrigeration working medium of condensation liquefaction again flows into air and changes after expansion valve throttling coolingHot device, so iterative cycles work, airborne heat energy is delivered in water by continuous " pump ", makes attemperaterIn water temperature raise gradually. Water temperature in attemperater reaches after target water temperature, can be for user.
But existing air source hot pump water heater need to arrange jumbo attemperater, take up room large, shadowRing indoor location. And hot water in attemperater will stop water outlet after using, until heat pump weightNewly the water of attemperater is heated to uniform temperature just can continue to use later. This water-out manners connects havingThe user of continuous water outlet demand has caused inconvenience.
Summary of the invention
In view of the above problems, the present invention has been proposed to provide one to overcome the problems referred to above or at least in partThe control method of the water heater addressing the above problem and corresponding water heater.
Further object of the present invention is to make water heater can meet the requirement of various environments for use.
Another further object of the present invention is to improve heat pump cycle efficiency and the dependability of water heater.
Especially, the invention provides a kind of control method of water heater. Wherein water heater is provided with heat pump and addsHot system and electric heating system, the control method of above-mentioned water heater comprises: the ring that obtains water heater environment of living inBorder parameter; Ambient parameter is mated with default multiple executive conditions, mate with ambient parameter obtainingExecutive condition; Determine the control model corresponding with it according to the executive condition of coupling, control model presetsAdjust the control parameter of heat pump heating system and/or electric heating system running status; According to determined control mouldPreset control parameter adjustment heat pump heating system and/or the running status of electric heating system in formula.
Alternatively, ambient parameter comprises: the inflow temperature of water heater, the environment temperature of water heater environment of living in;Running status comprises: the water supply direction of heat pump heating system and/or electric heating system, heat pump heating system and/Or the start and stop state of electric heating system.
Alternatively, each executive condition comprises: judge the threshold range of parameter, the threshold value of different executive conditionsScope difference; Ambient parameter is comprised with the step that default multiple executive conditions mate: to the temperature of intakingDegree and environment temperature are carried out default logical operation and are drawn judgement parameter; The judgement parameter that computing is drawn respectivelyCompare from the threshold range of different executive conditions, to determine the executive condition of coupling.
Alternatively, control model comprises: use one of heat pump heating system and electric heating system outwards to supply waterSelect a water supply pattern, according to selecting control parameter adjustment heat pump heating system and/or electricity preset in a water supply patternThe running status of heating system comprises: will feed to the water storage of electric heating system through the water of heat pump heating system heatingCase; Reach after the first preset temperature in the water temperature of storage tank, close heat pump heating system; Outwards receive and supply waterEnabling signal; Supplied water to the outlet pipe of water heater by storage tank, and water temperature drops to second pre-in storage tankIf after temperature, stop storage tank and supply water, and start heat pump heating system, by heat pump heating system heating water alsoFeed to the outlet pipe of water heater.
Alternatively, control model comprises: at least one is jointly outside by heat pump heating system and electric heating systemThe common water supply pattern supplying water.
Alternatively, common water supply pattern comprises: the first common water supply pattern, and according to the first common water supply patternIn preset control parameter adjustment heat pump heating system and/or the running status of electric heating system comprise: will be through heatThe water of pump heating system heating feeds to the storage tank of electric heating system; Reaching the 3rd in the water temperature of storage tank presetsAfter temperature, close water pipeline and the heat pump assembly of heat pump heating system; By the electric heater of electric heating systemBy the water temp. heating to the of storage tank four preset temperatures; Receive outside water supply enabling signal; Start heat pumpThe water pipeline of system also keeps the heat pump assembly of heat pump heating system to close; By the water of the water pipeline of flowing through withThe water that comes from storage tank is mixed to the outlet pipe supply of backward water heater.
Alternatively, common water supply pattern comprises: the second common water supply pattern, and according to the second common water supply patternIn preset control parameter adjustment heat pump heating system and/or the running status of electric heating system comprise: will be through heatThe water of pump heating system heating feeds to the storage tank of electric heating system; Reaching the 5th in the water temperature of storage tank presetsAfter temperature, close water pipeline and the heat pump assembly of heat pump heating system; And by the electrical heating of electric heating systemDevice is by the water temp. heating to the of storage tank six preset temperatures; Receive outside water supply enabling signal; Starting heat pump addsThe water pipeline of hot system also keeps the heat pump assembly of heat pump heating system to close; By the water of the water pipeline of flowing throughWith the outlet pipe supply that the water that comes from storage tank is mixed to backward water heater; In storage tank, water temperature drops toAfter the 7th preset temperature, start the heat pump assembly of heat pump heating system, by the water through heat pump assembly heating withThe water that comes from storage tank mixes the outlet pipe supply of backward water heater.
Alternatively, common water supply pattern comprises: the 3rd common water supply pattern, and according to the 3rd common water supply patternIn preset control parameter adjustment heat pump heating system and/or the running status of electric heating system comprise: will be through heatThe water of pump heating system heating feeds to the storage tank of electric heating system; Reaching the 8th in the water temperature of storage tank presetsAfter temperature, close water pipeline and the heat pump assembly of heat pump heating system; And by the electrical heating of electric heating systemDevice is by the water temp. heating to the of storage tank nine preset temperatures; Receive outside water supply enabling signal; Starting heat pump addsThe water pipeline of hot system also keeps the heat pump assembly of heat pump heating system to close; By the water of the water pipeline of flowing throughWith the outlet pipe supply that the water that comes from storage tank is mixed to backward water heater; In storage tank, water temperature drops toAfter the tenth preset temperature, start the heat pump assembly of heat pump heating system, by the water through heat pump assembly heating withThe water that comes from storage tank mixes the outlet pipe supply of backward water heater; In the water temperature that goes out of the outlet pipe of water heaterDegree with after coolant-temperature gage, starts the auxiliary electrical heater dress at the outlet pipe place that is positioned at water heater lower than user's targetPut.
Alternatively, heat pump heating system is compression air source heat pump heating system, comprise current heat exchanger andAir heat exchanger, control model comprises: defrosting mode, according to control parameter adjustment preset in defrosting modeThe running status of heat pump heating system and/or electric heating system comprises: by the refrigeration working medium stream of heat pump heating systemRoad switches to using its current heat exchanger as evaporimeter and the operation using its air heat exchanger as condenserState; The storage tank of electric heating system supplies water to the water pipeline of described current heat exchanger, changes to absorb currentThe cold of hot device.
Especially, according to another aspect of the present invention, also provide a kind of water heater. This water heater comprisesHeat pump heating system and electric heating system, water heater is configured to the controlling party of any water heater of above-mentioned introductionMethod is adjusted the running status of heat pump heating system and/or electric heating system.
The control method of water heater of the present invention and water heater, preset multiple different control model and respectively controlThe executive condition of molding formula, water heater in use, obtains ambient parameter the basis of water heater environment of living inAmbient parameter is mated with executive condition, further determines and is appropriate to the environment use of current water heater placeControl model, use the control model determined to carry out the adjustment of water heater running status. Therefore, hot waterThe parameter that device can be controlled flexibly according to concrete environment for use, the water that has met on the one hand user is wantedAsk, also can improve on the other hand operating efficiency and the dependability of water heater.
Further, water heater of the present invention disposes heat pump heating system and electric heating system, and preferablyAdopt heat pump heating system, make full use of the advantage of heat pump heating system, use electric heating system to coordinate and carry outSupply water, avoid frequent start-stop heat pump as far as possible, extended the service life of heat pump assembly.
Again further, preset various control pattern in water heater of the present invention, by Different Strategies to heatPump heating system and electric heating system and parts thereof are controlled, and the use that has met different environments for use is wantedAsk, control flexibility and reliability.
According to the detailed description to the specific embodiment of the invention by reference to the accompanying drawings below, those skilled in the art willMore understand above-mentioned and other objects, advantage and feature of the present invention.
Brief description of the drawings
Hereinafter describe in exemplary and nonrestrictive mode with reference to the accompanying drawings that more of the present invention concrete in detailEmbodiment. In accompanying drawing, identical Reference numeral has indicated same or similar parts or part. Art technologyPersonnel should be appreciated that, these accompanying drawings may not be drawn in proportion. In accompanying drawing:
Fig. 1 is the structural representation of water heater according to an embodiment of the invention;
Fig. 2 is the schematic diagram of the control method of water heater according to an embodiment of the invention;
Fig. 3 is the water (flow) direction signal of water heater under a kind of control model according to an embodiment of the inventionFigure;
Fig. 4 is that the water (flow) direction of water heater under another kind of control model shown according to an embodiment of the inventionIntention; And
Fig. 5 is the water (flow) direction schematic diagram of water heater under defrosting mode according to an embodiment of the invention.
Detailed description of the invention
The present embodiment provides a kind of water heater, can select applicable control mould according to the situation of place environmentFormula. Fig. 1 is the structural representation of water heater according to an embodiment of the invention, and this water heater is provided with heatPump heating system 110 and electric heating system 120. Heat pump heating system 110 utilizes the heat of heat pump cycle to enterThe heating of row water. And electric heating system 120 utilizes Electric heating to carry out water heating. In the present embodiment, heatHydrophone presets various control pattern, and every kind of control model is respectively to there being its executive condition. Use this enforcementExample water heater time, its ambient conditions of living in meets different executive conditions, can automatically use corresponding controlControl parameter preset in pattern is carried out the running status of heat pump heating system 110 and electric heating system 120Adjust.
The ambient parameter using while determining control model comprises following any one or more: the water inlet of water heaterThe environment temperature of temperature, water heater environment of living in, target leaving water temperature, the heat pump temperature that user setsDeng. Preferably, can utilize the wherein inflow temperature of water heater, the environment temperature of water heater environment of living in is enteredRow water heater carries out determining of control model. The controlled running status of water heater can comprise: heat pumpThe start and stop state of water supply direction, heat pump heating system and/or the electric heating system of system and/or electric heating system,Can comprise in addition water supply ratio and the output of heat pump heating system and electric heating system.
In order to obtain above ambient parameter, the water heater of the present embodiment can arrange inflow temperature sensor and ringBorder temperature sensor, wherein inflow temperature sensor is for obtaining the inflow temperature of water heater, and environment temperature passesSensor is for obtaining the environment temperature of water heater environment of living in.
Heat pump heating system 110 can comprise: current heat exchanger 111 and heat pump assembly. Electric heating system bagThe electric heater 122 of drawing together storage tank 121 and water in storage tank is heated. Wherein current heat exchanger 111The heat of heat pump cycle can be conducted to the current in its water route of flowing through, complete water heating. And electric heating system120 are provided with storage tank 121 and are arranged at the electric heater 122 in storage tank 121, and storage tank 121 existsThe water supply course of work is generally in full water state.
The principle of heating of heat pump heating system 110 is: carry out work according to contrary Carnot cycle. Refrigeration working medium is logicalCross air heat exchanger 112 and carry out heat exchange, from low-temperature heat source, absorb heat energy, hand over air heat exchanger 112Changing the air of rear temperature reduction is discharged by fan 115. Refrigeration working medium gas after vaporization flows by refrigeration working mediumCircuit switching device 113 sucks compressor 114, and compressor 114 becomes this low pressure refrigeration working medium gas compressionHigh temperature, gases at high pressure are sent into current heat exchanger 111, carry out condensation liquefaction, to flowing through current heat exchanger 111Current heat, the liquid refrigerating working medium of high pressure arrives expansion valve 117 through reservoir 116 and becomes lowTemperature low pressure liquid, starts next circulation.
Storage tank 121 in outside water supply stage generally in full water state. Heat pump heating system 110 and electricity addHot system 120 can supply water by the inlet pipeline of water heater, and without independent water inlet is set respectivelyPipe. In the optional structure of one, the water heater of the present embodiment can arrange water inlet distributor 141, in the futureFrom moisture dispensing heat pump heating system 110 and electric heating system 120 in inlet pipeline. Heat pump heating system110 and electric heating system 120 receive respectively by the water inlet that distributes of water inlet distributor 141, after heatingOutwards confess. At synchronization, heat pump heating system 110 and electric heating system 120 flow of inlet water separatelyBe generally consistent with water flow, thereby water inlet distributor 141 is distributed and has been determined that heat pump adds by water inletWater supply flow and ratio that hot system 110 and electric heating system 120 outwards supply water.
Water inlet distributor 141 is respectively with the first intake-outlet of current heat exchanger 111, storage tank 121The inlet pipeline of the first intake-outlet and water heater connects. Water inlet distributor 141 can be controlled by multipleThe valve combination of aperture forms, and also can use the combination valve of integrated multiple ports. A kind of optional mode is:Water inlet distributor 141 is at least comprising the electronically controlled proportional valve of three ports, first of electronically controlled proportional valve 141Port A is connected with inlet pipeline, of the second port B of electronically controlled proportional valve 141 and current heat exchanger 111One intake-outlet connects, the 3rd port C of electronically controlled proportional valve 141 and the first intake-outlet of storage tank 121Connect. In control model, regulate the control of the aperture of the second port B and the 3rd port C by preset adjustingParameter, and use this control parameter to carry out corresponding heat pump heating system 110 and the electric heating system just can controlled120 water supply ratio, ensures water outlet of water heater temperature stabilization.
For the glassware for drinking water that the second port B of electronically controlled proportional valve 141 is provided is prepared enough enough pressure by current heat exchangeDevice 111, the second port B of electronically controlled proportional valve 141 and the first intake-outlet of current heat exchanger 111 itBetween water pump 142 can also be set, to increase hydraulic pressure.
The water heater of the present embodiment can be provided with multiple different temperature sensors, to measure water temperature everywhereThese temperature sensors comprise: the first temperature sensor 131, the second temperature sensor 132, the 3rd temperatureSensor 133 and the 4th temperature sensor 134, wherein, the first temperature sensor 131, for measuring heatThe leaving water temperature of pump heating system 110; Second temperature sensor 132 is for measuring water feeding of heater pipelineWater temperature; Three-temperature sensor 133 is for measuring the water temperature of storage tank 121. Wherein, the first TEMPDevice 131 can be arranged in the outlet pipe of current heat exchanger 111 of heat pump heating system 110, the second temperatureSensor 132 can be arranged in the inlet pipeline of water heater, and three-temperature sensor 133 can be arranged atIn storage tank 121, the 4th temperature sensor 134 is for measuring the leaving water temperature of water heater.
The water heater of the present embodiment can be provided with water-water jet 143 in addition, for mixed flow heat exchanger 111Water outlet with storage tank 121. Water admixing device 143 can be at least comprising the water-water jet of three ports, mixed waterThe first port A ' of device 143 is connected with the second intake-outlet of current heat exchanger 111, water-water jet 143The second port B ' is connected with the second intake-outlet of storage tank 121, the 3rd port C ' of water-water jet 143Be connected with outlet pipeline. Water-water jet 143 receives after the water inlet of the first port A ' and the second port B ',After mixing in its mixed water cavity, confess from the 3rd port C '. The exit of the 3rd port C ' can also arrangeThere is the 4th temperature sensor 144, measure mixed water temperature.
Consider under some limiting case, the time of the lasting water supply of such as water heater is long etc., and heat pump addsThe leaving water temperature of hot system 110 and electric heating system 120 is all lower than target leaving water temperature. The heat of the present embodimentHydrophone can also arrange electrical auxiliary heater 145, is arranged on outlet pipeline, is configured at water-water jet 143The leaving water temperature of the 3rd port C ' start during lower than target leaving water temperature, further to improve water supply water temperature.
The water heater of the present embodiment can run on multiple different water supply pattern, under different mode, and water heaterOperational factor difference, the control flow of water heater is also had any different. For example, under different control models, heat pumpWhether device starts, start and stop condition, current heat exchanger 111 and the water storage of entry condition, electric heater 122The water supply direction of case 121 and water supply ratio are all had any different. Use the control model under different executive conditions to carry outThe detailed description of the invention that water heater running status regulates and the flow process of definite control model are with lower water-heaterThe embodiment of control method in be introduced.
The embodiment of the present invention also provides a kind of control method of water heater, for above embodiment is introducedAny water heater control, meet the use needs of varying environment. Fig. 2 is according to the present invention oneThe schematic diagram of the control method of the water heater of embodiment, the control method of this water heater comprises:
Step S202, obtains the ambient parameter of water heater environment of living in;
Step S204, mates ambient parameter with default multiple executive conditions, join obtaining with environmentThe executive condition of number coupling;
Step S206, determines the control model corresponding with it according to the executive condition of coupling;
Step S208 according to control parameter adjustment heat pump heating system preset in determined control model and/Or the running status of electric heating system.
In above control model, preset the control of adjusting heat pump heating system and/or electric heating system running statusParameter processed. Wherein above ambient parameter can preferably be selected inflow temperature and the water heater environment of living in of water heaterEnvironment temperature; Need the running status of adjusting to comprise the water supply side of heat pump heating system and/or electric heating systemTo and the start and stop state of heat pump heating system and/or electric heating system.
Above executive condition can use various ways to set, for example, for inflow temperature and environment temperature settingThreshold range, different executive conditions, the threshold range difference of two parameters. Make execution in this wayCondition, the optional flow process of one of step S204 is, respectively by the inflow temperature getting and environment temperature andPreset threshold range compares respectively, and the inflow temperature and the environment temperature that get when water heater fall into certainIn the threshold range that one executive condition is formulated time, just can determine this executive condition and current environment parameterJoin.
The another kind of setting means of executive condition is: the threshold range that judges parameter is set, different executive conditionsThreshold range difference, thereby the flow process of step S204 can be: inflow temperature and environment temperature are carried outDefault logical operation draws judgement parameter; The judgement parameter that computing is drawn is respectively from different executive conditionsThreshold range compares, to determine the executive condition of coupling. Wherein a kind of fairly simple judgement parameterLogical calculation method be mean value or the mean-square value of getting inflow temperature and environment temperature, can also set notCompute weighted with weights etc. The formula of default logical operation can be according to the result of various tests aboveSummary draws, and can increase or reduce other ambient parameters (target water temperature that for example user setsDegree, outdoor temperature etc.) as the variable of computing. Utilize logical operation to calculate and judge that parameter carries out threshold decisionMode more flexible, and can modify flexibly to basis for estimation.
The optional mode of one of the control method of the water heater of the present embodiment can arrange following control model: makeOutwards supply water with one of heat pump heating system and electric heating system select a water supply pattern, at least one is by heat pumpThe common common water supply pattern outwards supplying water of heating system and electric heating system, heat pump heating system is tieed upThe defrosting mode protecting etc. Wherein, select a water supply pattern be applicable to summer environment temperature and water inlet water temperature higherSituation, common water supply pattern is applicable to select environment temperature and the water inlet water temperature that a water supply pattern cannot be satisfiedLower situation, along with the difference of temperature, common water supply pattern can be set to multiple, to heat pump isSystem 110 and common flow process and the service condition supplying water of electric heating system 120 are adjusted, for example, along with environmentTemperature reduces, and is divided into the first common water supply pattern, the second common water supply pattern, the 3rd common water supply pattern.
For example, in comparatively hot environment (environment temperature is at the 35 degree) situation of summer weather, step S208The flow process that a water supply pattern control water heater is selected in utilization is: the water heating through heat pump heating system 110 is fed toThe storage tank 121 of electric heating system 120; Reach the first preset temperature (as 42 in the water temperature of storage tank 121Degree left and right) after, close heat pump heating system 110; (for example user opens to receive outside water supply enabling signalThe action of hot-water valve or hydraulic signal); Supplied water to the outlet pipe of water heater by storage tank 121, and in storageIn water tank 121, water temperature drops to after the second preset temperature (as 40 degree left and right), stops storage tank 121 and suppliesWater, and start heat pump heating system 110, by heat pump heating system 110 heating waters and feed to going out of water heaterWater pipe.
Fig. 3 is the water (flow) direction signal of water heater under a kind of control model according to an embodiment of the inventionFigure, there is shown by the heat pump heating system water (flow) direction of heating separately.
In the time supplying water to storage tank 121, the first port A of electronically controlled proportional valve 141 and the second port B, mixedThe first port A ', the second port B ' of hydrophone 143 are in all-pass state, and water pump 142 is all in openingState, the 3rd port C of electronically controlled proportional valve 141, the 3rd port C ' of water-water jet 143 closes. FromInlet pipeline in outside running water through water heater, by the second port B ingoing stream heat exchanger 111,Heat pump assembly is in heat pump state, to heating by the current of current heat exchanger 111. Water after heatingThe first port A ', the second port B ' through water-water jet 143 enter storage tank 12. , in the time supplying water,First, the first port A of electronically controlled proportional valve 141 and the 3rd port C, and the second end of water-water jet 143Mouth B ' and the 3rd port C ' open, and are outwards supplied water, when under storage tank 121 water temperatures by storage tank 121After falling, heat pump heating system starts to start, the first port A of electronically controlled proportional valve 141 and the second port B,And the first port A ' of water-water jet 143 and the 3rd port C ' open, by current heat exchanger 111 toOuter water supply.
Fig. 4 is that the water (flow) direction of water heater under another kind of control model shown according to an embodiment of the inventionIntention, the way of supplying water shown in Fig. 4 is heat pump heating system 110 and the common water outlet of electric heating system 120.Now, three ports of electronically controlled proportional valve 141 are all opened, wherein the second port B and the 3rd port CAperture control the water supply ratio of heat pump heating system 110 and electric heating system 120.
In the situation that spring and autumn, environment was comparatively felt nice and cool (if environment temperature is at 20 degree), step S208 is according toThe flow process of one common water supply pattern is: the water heating through heat pump heating system 110 is fed to electric heating system 120Storage tank 121; Reach after the 3rd preset temperature (as 42 degree left and right) in the water temperature of storage tank 121, closeClose water pipeline and the heat pump assembly of heat pump heating system 110; By the electric heater 122 of electric heating system 120By the water temp. heating to the of storage tank 121 four preset temperatures (as 80 degree left and right); Outwards receive and supply water and openMoving signal (for example user opens action or the hydraulic signal of hot-water valve); Start heat pump heating system 110Water pipeline and keep the heat pump assembly of heat pump heating system 110 to close; By the water of the water pipeline of flowing through withThe water that comes from storage tank 121 is mixed to the outlet pipe supply of backward water heater. Under this control model, due toIn water supply process, heat pump assembly does not start, and sneaks into cold water via the acting as of water of current heat exchanger 111, protectsCard user's water temperature stabilization and consistent with target water temperature.
Under low temperature condition (if environment temperature is at 7 degree), step S208 is according to the second common water supply patternFlow process be: the storage tank 121 that the water heating through heat pump heating system 110 is fed to electric heating system; ?The water temperature of storage tank 121 reaches after the 5th preset temperature (as 42 degree left and right), closes heat pump heating system110 water pipeline and heat pump assembly; And by the electric heater 122 of electric heating system 120 by storage tank 121Water temp. heating to the six preset temperatures (as 80 about degree); (for example receive outside water supply enabling signalUser opens action or the hydraulic signal of hot-water valve); Start the water pipeline of heat pump heating system 110 alsoKeep the heat pump assembly of heat pump heating system 110 to close; By the water of the water pipeline of flowing through with will come from water storageThe water of case 121 mixes the outlet pipe supply of backward water heater; In storage tank 121, water temperature drops to the 7th pre-If after temperature (as 40 degree left and right), start the heat pump assembly of heat pump heating system 110, will be through heat pumpThe water of device 110 heating mixes the outlet pipe supply of backward water heater with the water that comes from storage tank 121.
In severe cold environment (if environment temperature is at-7 degree), step S208 is according to the 3rd common water supply patternFlow process be: the storage tank 121 that the water heating through heat pump heating system 110 is fed to electric heating system 120;Reach after the 8th preset temperature (as 42 degree left and right) in the water temperature of storage tank 121, close heat pump systemWater pipeline and the heat pump assembly of system 110; And by the electric heater 122 of electric heating system 120 by storage tank121 water temp. heating to the, nine preset temperatures (as 80 degree left and right); Receive outside water supply enabling signal; OpenThe water pipeline of moving heat pump heating system 110 also keeps the heat pump assembly of heat pump heating system 110 to close; WillThe flow through water of water pipeline and the outlet pipe supply that the water that comes from storage tank is mixed to backward water heater; In storageWater in Water Tanks temperature drops to after the tenth preset temperature (as 40 degree left and right), starts heat pump heating system 110Heat pump assembly, will mix backward hot water with the water that comes from storage tank 121 through the water of heat pump assembly heatingThe outlet pipe supply of device; At the leaving water temperature of the outlet pipe of water heater lower than user's target with after coolant-temperature gage,Start the auxiliary electric heater unit 145 at the outlet pipe place that is positioned at water heater.
Temperature value in above embodiment, only for illustrating, the not control of the water heater to the present embodimentMethod limits, and in the time that reality is used, above executive condition can be changed flexibly according to test result.
Various water supply patterns above, all using heat pump heating system as first-selected heater means, and can protectCard heat pump heating system can frequently not open and close, and has ensured reliability and the service life of water heater.
Heat pump heating system can be compression air source heat pump heating system, uses air heat exchanger as separatelyA heat-exchanger rig, in the situation that environment temperature is lower in the winter time, air heat exchanger 112 there will be frosting feelingsCondition, causes heat exchange efficiency to decline, after the frosting degree of detection air heat exchanger acquires a certain degree, and heatHydrophone need to enter defrost pattern, Fig. 5 be according to an embodiment of the invention water heater under defrosting modeWater (flow) direction schematic diagram, heat pump heating system 110 switches refrigerant flow switching device shifter 113 makes current heat exchangeDevice 111 moves as condenser as evaporimeter and air heat exchanger 112, by improving air heat exchanger112 temperature is eliminated the frost on it, and now the temperature of current heat exchanger 111 reduces. Electronically controlled proportional valve 141The second port B and the 3rd port C and water pump 142 open, current are according to the operation of arrow indicated direction,Take away the cold of current heat exchanger 111, be beneficial to the defrost processing of air heat exchanger 112. Defrost pattern andWater supply pattern can not move simultaneously, if user need to use hot water in the time of defrosting, water heater will switch to confessionAqueous mode, after user uses, defrosts returning.
Utilize above multiple different control models, can obtain ambient parameter the basis of water heater environment of living inAmbient parameter is mated with executive condition, further determines and is appropriate to the environment use of current water heater placeControl model, use this control model to carry out the adjustment of water heater running status. Therefore, water heater canThe parameter of controlling flexibly according to concrete environment for use, has met user's water requirement on the one hand, anotherAlso can improve on the one hand operating efficiency and the dependability of water heater.
So far, although those skilled in the art will appreciate that and detailedly herein illustrate and described of the present inventionMultiple exemplary embodiments, still, without departing from the spirit and scope of the present invention, still can be according to thisDisclosure of invention is directly determined or is derived many other modification or the amendment that meet the principle of the invention. CauseThis, scope of the present invention should be understood and regard as and cover all these other modification or amendments.
Claims (10)
1. a control method for water heater, described water heater is provided with heat pump heating system and electrical heating systemSystem, is characterized in that, described control method comprises:
Obtain the ambient parameter of described water heater environment of living in;
Described ambient parameter is mated with default multiple executive conditions, to obtain and described ambient parameterThe executive condition of coupling;
Determine the control model corresponding with it according to the executive condition of described coupling, control model presets adjustmentThe control parameter of described heat pump heating system and/or described electric heating system running status;
According to heat pump heating system and/or institute described in control parameter adjustment preset in determined control modelState the running status of electric heating system.
2. control method according to claim 1, is characterized in that
Described ambient parameter comprises: the environment of the inflow temperature of described water heater, described water heater environment of living inTemperature;
Described running status comprises: the water supply direction of described heat pump heating system and/or described electric heating system,The start and stop state of described heat pump heating system and/or described electric heating system.
3. control method according to claim 2, is characterized in that
Each described executive condition comprises: judge the threshold range of parameter, described in different described executive conditionsThreshold range difference;
Described ambient parameter is comprised with the step that default multiple executive conditions mate:
Described inflow temperature and described environment temperature are carried out to default logical operation and draw judgement parameter;
The judgement parameter that computing is drawn compares from the threshold range of different described executive conditions respectively, withDetermine the executive condition of described coupling.
4. according to the control method described in any one in claims 1 to 3, it is characterized in that
Described control model comprises: use one of described heat pump heating system and electric heating system outwards to supply waterSelect a water supply pattern,
Select heat pump heating system and/or institute described in control parameter adjustment preset in a water supply pattern according to describedThe running status of stating electric heating system comprises:
The storage tank of described electric heating system will be fed to through the water of described heat pump heating system heating;
Reach after the first preset temperature in the water temperature of described storage tank, close described heat pump heating system;
Receive outside water supply enabling signal;
Supplied water to the outlet pipe of described water heater by described storage tank, and water temperature drops in described storage tankAfter the second preset temperature, stop described storage tank and supply water, and start described heat pump heating system, by described heatPump heating system heating water also feeds to the outlet pipe of described water heater.
5. according to the control method described in any one in claims 1 to 3, it is characterized in that
Described control model comprises: at least one is jointly outside by described heat pump heating system and electric heating systemThe common water supply pattern supplying water.
6. control method according to claim 5, is characterized in that
Described common water supply pattern comprises: the first common water supply pattern,
According to heat pump heating system described in control parameter adjustment preset in the described first common water supply pattern and/Or the running status of described electric heating system comprises:
The storage tank of described electric heating system will be fed to through the water of described heat pump heating system heating;
Reach after the 3rd preset temperature in the water temperature of described storage tank, close the current of described heat pump heating systemPipeline and heat pump assembly;
By the electric heater of described electric heating system by the water temp. heating to the of described storage tank four preset temperatures;
Receive outside water supply enabling signal;
Start the water pipeline of described heat pump heating system and keep the heat pump assembly of described heat pump heating systemClose;
By the water of the described water pipeline of flowing through with the water that comes from described storage tank is mixed to backward described hot waterThe outlet pipe supply of device.
7. control method according to claim 5, is characterized in that
Described common water supply pattern comprises: the second common water supply pattern,
According to heat pump heating system described in control parameter adjustment preset in the described second common water supply pattern and/Or the running status of described electric heating system comprises:
The storage tank of described electric heating system will be fed to through the water of described heat pump heating system heating;
Reach after the 5th preset temperature in the water temperature of described storage tank, close the current of described heat pump heating systemPipeline and heat pump assembly;
And by the electric heater of described electric heating system, the water temp. heating to the of described storage tank six is preset to temperatureDegree;
Receive outside water supply enabling signal;
Start the water pipeline of described heat pump heating system and keep the heat pump assembly of described heat pump heating systemClose;
By the water of the described water pipeline of flowing through with the water that comes from described storage tank is mixed to backward described hot waterThe outlet pipe supply of device;
In described storage tank, water temperature drops to after the 7th preset temperature, starts the heat of described heat pump heating systemPump installation, by mix with the water that comes from described storage tank through the water of described heat pump assembly heating backward described inThe outlet pipe supply of water heater.
8. control method according to claim 5, is characterized in that
Described common water supply pattern comprises: the 3rd common water supply pattern,
According to heat pump heating system described in control parameter adjustment preset in the described the 3rd common water supply pattern and/Or the running status of described electric heating system comprises:
The storage tank of described electric heating system will be fed to through the water of described heat pump heating system heating;
Reach after the 8th preset temperature in the water temperature of described storage tank, close the current of described heat pump heating systemPipeline and heat pump assembly;
And by the electric heater of described electric heating system, the water temp. heating to the of described storage tank nine is preset to temperatureDegree;
Receive outside water supply enabling signal;
Start the water pipeline of described heat pump heating system and keep the heat pump assembly of described heat pump heating systemClose;
By the water of the described water pipeline of flowing through with the water that comes from described storage tank is mixed to backward described hot waterThe outlet pipe supply of device;
In described storage tank, water temperature drops to after the tenth preset temperature, starts the heat of described heat pump heating systemPump installation, by mix with the water that comes from described storage tank through the water of described heat pump assembly heating backward described inThe outlet pipe supply of water heater;
At the leaving water temperature of the outlet pipe of described water heater lower than user's target with after coolant-temperature gage, startup is positioned atThe auxiliary electric heater unit at the outlet pipe place of described water heater.
9. according to the control method described in any one in claims 1 to 3, it is characterized in that
Described heat pump heating system is compression air source heat pump heating system, comprises current heat exchanger and airHeat exchanger,
Described control model comprises: defrosting mode,
According to heat pump heating system and/or described electricity described in control parameter adjustment preset in described defrosting modeThe running status of heating system comprises:
The refrigeration working medium stream of described heat pump heating system is switched to using its current heat exchanger as evaporimeterAnd the running status using its air heat exchanger as condenser;
The storage tank of described electric heating system supplies water to the water pipeline of described current heat exchanger, described in absorbingThe cold of current heat exchanger.
10. a water heater, is characterized in that comprising heat pump heating system and electric heating system, described hot waterDevice be configured to control method that right to use requires the water heater of any one in 1 to 9 to heat pump heating system and/ or the running status of electric heating system adjust.
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| CN106403305A (en) * | 2016-09-23 | 2017-02-15 | 广东美的暖通设备有限公司 | Combined heat pump water heater unit and control method thereof |
| CN106705540A (en) * | 2017-01-05 | 2017-05-24 | 安徽亿瑞深冷能源科技有限公司 | High-precision liquid cooling flow-mixing and temperature-controlling device and method based on phase-change cold storing mechanism |
| CN107588539A (en) * | 2017-09-18 | 2018-01-16 | 合肥美的暖通设备有限公司 | Water heater, method for heating and controlling and system |
| CN108253630A (en) * | 2016-12-29 | 2018-07-06 | 青岛经济技术开发区海尔热水器有限公司 | A kind of frequency conversion heat pump water heater control method |
| CN109798668A (en) * | 2017-11-16 | 2019-05-24 | 保音股份有限公司 | Thermostatic water heaters and its constant temperature method |
| CN112781070A (en) * | 2020-09-23 | 2021-05-11 | 重庆海尔热水器有限公司 | Gas equipment parameter adjusting method and mobile terminal |
| CN112856546A (en) * | 2021-03-29 | 2021-05-28 | 河北博志热能设备有限公司 | Heating assembly device for improving heating effect of side room for heating of heat pump and control method thereof |
| CN114909699A (en) * | 2021-02-08 | 2022-08-16 | 艾欧史密斯(中国)热水器有限公司 | Defrosting control method, central controller and heating system |
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| CN114909699A (en) * | 2021-02-08 | 2022-08-16 | 艾欧史密斯(中国)热水器有限公司 | Defrosting control method, central controller and heating system |
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| CN112856546A (en) * | 2021-03-29 | 2021-05-28 | 河北博志热能设备有限公司 | Heating assembly device for improving heating effect of side room for heating of heat pump and control method thereof |
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