CN106403305A - Combined heat pump water heater unit and control method thereof - Google Patents
Combined heat pump water heater unit and control method thereof Download PDFInfo
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- CN106403305A CN106403305A CN201610848328.8A CN201610848328A CN106403305A CN 106403305 A CN106403305 A CN 106403305A CN 201610848328 A CN201610848328 A CN 201610848328A CN 106403305 A CN106403305 A CN 106403305A
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- water
- temperature
- heat pump
- thermal source
- auxiliary thermal
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/20—Arrangement or mounting of control or safety devices
- F24H9/2007—Arrangement or mounting of control or safety devices for water heaters
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H4/00—Fluid heaters characterised by the use of heat pumps
- F24H4/02—Water heaters
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- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Pump Type And Storage Water Heaters (AREA)
Abstract
The invention discloses a combined heat pump water heater unit and a control method thereof. The combined heat pump water heater unit comprises a heat pump host, an auxiliary heat source, a water tank and a water pump. The method comprises the following steps of acquiring the current outdoor environmental temperature and the water temperature of the water tank; and controlling the starting and stopping of the heat pump host and the auxiliary heat source according to the current outdoor environmental temperature and the water temperature of the water tank. The method is used for controlling the starting and stopping of the heat pump host and the auxiliary heat source according to the current outdoor environmental temperature and the water temperature of the water tank, so that the energy efficiency of the unit is increased, and the aim of saving energy is achieved.
Description
Technical field
The present invention relates to technical field of water heaters, particularly to a kind of control method of combined heat pump Hot water units and
A kind of combined heat pump Hot water units.
Background technology
After outdoor environment temperature reduction, the efficiency of unit is deteriorated heat-pump hot-water unit, and the water temperature of water tank is higher, energy
Effect is lower, and simultaneously under low temperature environment, the heating capacity of heat-pump hot-water unit declines, so that increasing auxiliary thermal source to ensure machine
The heating capacity of group.
In correlation technique, control the start and stop of heat pump main frame in heat-pump hot-water unit according to design temperature, when heat pump main frame
When heating capacity is not enough, automatically turns on auxiliary thermal source, but the efficiency of which is still than relatively low.
Content of the invention
It is contemplated that at least solving one of technical problem in correlation technique to a certain extent.
For this reason, it is an object of the present invention to proposing a kind of control method of combined heat pump Hot water units, by root
To control heat pump main frame and auxiliary thermal source start and stop according to the water temperature of current outdoor environment temperature and water tank so that the efficiency of unit carries
Height, reaches the purpose of energy-conservation.
Further object is that proposing a kind of combined heat pump Hot water units.
For reaching above-mentioned purpose, one aspect of the present invention embodiment proposes a kind of controlling party of combined heat pump Hot water units
Method, described combined heat pump Hot water units include heat pump main frame, auxiliary thermal source, water tank and water pump, and methods described includes following step
Suddenly：Obtain current outdoor ambient temperature, and obtain the water temperature of described water tank；And according to described current outdoor ambient temperature and institute
The water temperature stating water tank carries out on off control to described heat pump main frame and described auxiliary thermal source.
The control method of combined heat pump Hot water units according to embodiments of the present invention, by according to current outdoor environment temperature
The water temperature of degree and water tank carries out on off control to heat pump main frame and auxiliary thermal source so that the efficiency of unit improves, and reaches energy-conservation
Purpose.
According to one embodiment of present invention, the described water temperature pair according to described current outdoor ambient temperature and described water tank
Described heat pump main frame and described auxiliary thermal source carry out on off control, including：Judge whether described current outdoor ambient temperature is less than
First preset temperature；If described current outdoor ambient temperature is less than described first preset temperature, determine whether described water
Whether the water temperature of case is less than the second preset temperature；If the water temperature of described water tank is less than described second preset temperature, control institute
State auxiliary thermal source to open, and control described heat pump main frame to be in stopped status.
According to one embodiment of present invention, the described water temperature pair according to described current outdoor ambient temperature and described water tank
Described heat pump main frame and described auxiliary thermal source carry out on off control, also include：If described current outdoor ambient temperature be more than etc.
In described first preset temperature, then determine whether whether the water temperature of described water tank is less than the 3rd preset temperature；If described water
The water temperature of case is less than described 3rd preset temperature, then control described heat pump main frame to open, and control described auxiliary thermal source to be in pass
Closed state.
According to one embodiment of present invention, the control method of above-mentioned combined heat pump Hot water units, also includes：Judge
Currently whether there is water-flow signal；If currently there being described water-flow signal, described auxiliary thermal source is controlled to open, and real-time judge heat
Whether the water temperature of the water outlet of pump hot water machine group is more than or equal to the 4th preset temperature；If the water outlet of described heat-pump hot-water unit
Water temperature at mouthful is more than or equal to described 4th preset temperature, then control described water pump to open to bypass the water outlet of described auxiliary thermal source
Water at mouthful is to described water tank.
According to one embodiment of present invention, described auxiliary thermal source can be gas furnace or electric heater.
For reaching above-mentioned purpose, a kind of combined heat pump Hot water units that another aspect of the present invention embodiment proposes, including：
Heat pump main frame；Auxiliary thermal source；Water tank；Water pump；Temperature acquiring unit, for obtaining current outdoor ambient temperature, and obtains described
The water temperature of water tank；Control unit, described control unit is obtained with described heat pump main frame, described auxiliary thermal source and described temperature respectively
Unit is connected, and described control unit is used for according to the water temperature of described current outdoor ambient temperature and described water tank to described heat pump master
Machine and described auxiliary thermal source carry out on off control.
Combined heat pump Hot water units according to embodiments of the present invention, control unit is passed through according to current outdoor ambient temperature
With the water temperature of water tank, on off control is carried out to heat pump main frame and auxiliary thermal source so that the efficiency of unit improves, reach the mesh of energy-conservation
's.
According to one embodiment of present invention, described control unit is according to described current outdoor ambient temperature and described water tank
Water temperature when on off control is carried out to described heat pump main frame and described auxiliary thermal source, wherein, described control unit judges described working as
Whether front outdoor environment temperature is less than the first preset temperature, if described current outdoor ambient temperature is less than the described first default temperature
Degree, described control unit then determines whether whether the water temperature of described water tank is less than the second preset temperature, if described water tank
Water temperature is less than described second preset temperature, and described control unit then controls described auxiliary thermal source to open, and controls described heat pump master
Machine is in stopped status.
According to one embodiment of present invention, described control unit is according to described current outdoor ambient temperature and described water tank
Water temperature when on off control is carried out to described heat pump main frame and described auxiliary thermal source, wherein, if described current outdoor environment temperature
Degree is more than or equal to described first preset temperature, and described control unit then determines whether whether the water temperature of described water tank is less than the 3rd
Preset temperature, if the water temperature of described water tank is less than described 3rd preset temperature, described control unit then controls described heat pump master
Machine is opened, and controls described auxiliary thermal source to be closed.
According to one embodiment of present invention, above-mentioned combined heat pump Hot water units, also include：Current detector unit,
Described current detector unit is connected with described control unit, and described current detector unit is used for judging currently whether have current to believe
Number, wherein, if currently there being described water-flow signal, described control unit then controls described auxiliary thermal source to open, and real-time judge
Whether the water temperature of the water outlet of heat-pump hot-water unit is more than or equal to the 4th preset temperature, and going out in described heat-pump hot-water unit
When water temperature at the mouth of a river is more than or equal to described four preset temperature, described water pump is controlled to open to bypass going out of described auxiliary thermal source
Water at the mouth of a river is to described water tank.
According to one embodiment of present invention, described auxiliary thermal source is gas furnace or electric heater.
Brief description
Fig. 1 is the flow chart of the control method of combined heat pump Hot water units according to embodiments of the present invention；
Fig. 2 is the structural representation of combined heat pump Hot water units according to an embodiment of the invention；
Fig. 3 is the flow chart of the control method of combined heat pump Hot water units according to an embodiment of the invention.
Specific embodiment
Embodiments of the invention are described below in detail, the example of described embodiment is shown in the drawings, wherein from start to finish
The element that same or similar label represents same or similar element or has same or like function.Below with reference to attached
The embodiment of figure description is exemplary it is intended to be used for explaining the present invention, and is not considered as limiting the invention.
The control method of the combined heat pump Hot water units of proposition according to embodiments of the present invention to be described with reference to the accompanying drawings
And combined heat pump Hot water units.
Fig. 1 is the flow chart of the control method of combined heat pump Hot water units according to embodiments of the present invention.
In an embodiment of the present invention, combined heat pump Hot water units may include heat pump main frame, auxiliary thermal source, water tank and water
Pump.Wherein, auxiliary thermal source can be gas furnace or electric heater etc..
As shown in figure 1, the control method of this combined heat pump Hot water units may include following steps：
S1, obtains current outdoor ambient temperature, and obtains the water temperature of water tank.
S2, the water temperature according to current outdoor ambient temperature and water tank carries out on off control to heat pump main frame and auxiliary thermal source.
Specifically, no matter being at low ambient temperatures or under hot environment, if the design temperature control according only to water tank
The start and stop of heat pump main frame in heat-pump hot-water unit processed, when the heating capacity of heat pump main frame is not enough, automatically turn on auxiliary thermal source, that
, because, under low temperature environment, the heating capacity of heat-pump hot-water unit is low, and efficiency is low, therefore easily cause the waste of the energy.And
At a temperature of varying environment, under different water tank temperatures, the efficiency of heating surface of auxiliary thermal source is basically unchanged, so, can be according to outdoor
The water temperature of ambient temperature and water tank come to control the start and stop of heat pump main frame and auxiliary thermal source so that control more reasonable, thus carrying
The efficiency of high unit, reaches the purpose of energy-conservation.
According to one embodiment of present invention, the water temperature according to current outdoor ambient temperature and water tank is to heat pump main frame and auxiliary
Thermal source is helped to carry out on off control, including：Judge whether current outdoor ambient temperature is less than the first preset temperature；If current outdoor
Ambient temperature is less than the first preset temperature, then determine whether whether the water temperature of water tank is less than the second preset temperature；If water tank
Water temperature be less than the second preset temperature, then control auxiliary thermal source to open, and control heat pump main frame to be in stopped status.
It should be noted that the first preset temperature T4bstart refers to that heat pump main frame does not run, and auxiliary thermal source can be transported
Corresponding outdoor environment temperature during row, generally -7～7 DEG C of the scope of this value.Second preset temperature T2 refers to auxiliary thermal source
Difference between start return difference temperature Trb of shutdown temperature T5bstop and auxiliary thermal source, wherein, the shutdown temperature of auxiliary thermal source
Generally 30～40 DEG C of T5bstop.
Specifically, when heat-pump hot-water unit is opened, first judge whether current outdoor ambient temperature is preset less than first
Temperature T4bstart (as 5 DEG C), if it is, explanation ambient temperature ratio is relatively low, does not now start heat pump main frame.Then, judge
Whether the water temperature T 5 of water tank is less than the start return difference temperature of shutdown temperature T5bstop (as 35 DEG C)-auxiliary thermal source of auxiliary thermal source
Trb, if it is, explanation water tank water temperature T 5 too low, now control auxiliary thermal source start, until water tank water temperature T 5 reach auxiliary
Help the shutdown temperature T5bstop of thermal source, control auxiliary thermal source out of service.Thus at low ambient temperatures, when water tank water temperature is relatively low
When, directly control auxiliary thermal source to open, because the efficiency of heating surface under low temperature environment and relatively low water temperature for the auxiliary thermal source is basically unchanged,
Thus effectively increase the efficiency of heat-pump hot-water unit, reach the purpose of energy-conservation.
Further, according to one embodiment of present invention, the water temperature according to current outdoor ambient temperature and water tank is to heat
Pump main frame and auxiliary thermal source carry out on off control, also include：If current outdoor ambient temperature is more than or equal to the first preset temperature,
Then determine whether whether the water temperature of water tank is less than the 3rd preset temperature；If the water temperature of water tank is less than the 3rd preset temperature,
Control heat pump main frame to open, and control auxiliary thermal source to be closed.
It should be noted that the 3rd preset temperature T3 refers to design temperature TS and heat pump main frame in different outdoor environment temperatures
Under smaller value between corresponding shutdown temperature Tstop from heat pump main frame the start return difference temperature at a temperature of different outdoor environments
Difference between Tr, i.e. T3=MIN (TS, Tstop)-Tr.Wherein, generally 38-70 DEG C of design temperature TS, heat pump main frame is not
Can be obtained by experiment test with shutdown temperature Tstop corresponding under outdoor environment temperature.
Specifically, when heat-pump hot-water unit is opened, first judge whether current outdoor ambient temperature is preset less than first
Temperature T4bstart (as 5 DEG C), if it is not, then explanation current environmental temperature is higher, now need not start auxiliary thermal source, pass through
Open heat pump main frame and can meet demand.Then, the shutdown temperature of heat pump main frame is obtained according to current outdoor ambient temperature T4
Tstop, and whether judge the water temperature T 5 of water tank less than MIN (TS, Tstop)-Tr, if it is, opening heat pump main frame, until water
The water temperature T 5 of case reaches MIN (TS, Tstop), controls heat pump main shut-down system.
Therefore, the control method of combined heat pump Hot water units according to embodiments of the present invention, by setting reasonably heat
The shutdown temperature of pump main frame and the shutdown temperature of auxiliary thermal source, and according to the water temperature of outdoor environment temperature and water tank to heat pump master
Machine and auxiliary thermal source carries out on off control so that the efficiency of heat-pump hot-water unit reaches maximum, thus realizing the purpose of energy-conservation.
According to one embodiment of present invention, the control method of above-mentioned combined heat pump Hot water units, also includes：Judge
Currently whether there is water-flow signal；If currently there being water-flow signal, auxiliary thermal source is controlled to open, and real-time judge heat pump water-heating machine
Whether the water temperature of the water outlet of group is more than or equal to the 4th preset temperature；If the water temperature of the water outlet of heat-pump hot-water unit is big
Open the water of the water outlet to bypass auxiliary thermal source in equal to the 4th preset temperature, then controlling water pump to water tank.Wherein, the 4th
Preset temperature refers to the water temperature of user setup.
Specifically, when user uses hot water, so that the water temperature of the water outlet of heat-pump hot-water unit quickly reaches
To the water temperature of user setup, when heat-pump hot-water unit is opened, whether also real-time judge has water-flow signal.If there are current letter
Number, then open auxiliary thermal source and heated.Meanwhile, whether the water temperature T 6 of the water outlet of real-time judge heat-pump hot-water unit is more than
4th preset temperature T6S.If it is, controlling water pump to open, so that the water of auxiliary thermal source is back in water tank, until Heat Pump
The water temperature of the water outlet of water dispenser group is slightly less than the 4th preset temperature T6S, thus preventing water temperature over-high and scalding user.If not yet
There is water-flow signal, then directly control auxiliary thermal source out of service, and keep water pump to be closed.Thus being assisted by control
Thermal source is making the water temperature of heat-pump hot-water unit be rapidly achieved water temperature needed for user, and need not all ensure the water in water tank all the time
Temperature reaches water temperature needed for user, greatly reduces the operation duration of heat pump main frame and auxiliary thermal source, and then has reached the mesh of energy-conservation
's.
For making those skilled in the art be better understood upon the present invention, a specific example with reference to the present invention to be entered
One step explanation.
Specifically, as shown in Fig. 2 combined heat pump Hot water units may include heat pump main frame, auxiliary thermal source, water tank, water pump
And check-valves.Wherein, heat pump main frame is in parallel with water tank, and one end of auxiliary thermal source is connected with the outlet of water tank, auxiliary thermal source
The other end be connected with the outlet of heat-pump hot-water unit, the water inlet of water pump respectively, one end of check-valves and the water outlet of water pump
Mouth is connected, and the other end of check-valves is connected with the water inlet of water tank and the water inlet of heat-pump hot-water unit respectively.
As shown in figure 3, the control method of this combined heat pump Hot water units may include following steps：
S101, heat-pump hot-water unit is started shooting.
S102, judges whether T4 ＜ T4bstart sets up.If it is, execution step S103；If not, execution step
S107.
S103, judges whether T5 ＜ T5bstop-Trb sets up.If it is, execution step S104；If not, continuing to judge.
S104, opens auxiliary thermal source and water pump, to be circulated heating by auxiliary thermal source and water pump to the water in water tank.
S105, judges whether T5 >=T5bstop sets up.If it is, execution step S106；If not, continuing through auxiliary
Thermal source and water pump are circulated heating to the water in water tank.
S106, the water temperature T 5 in water tank has reached the shutdown temperature T5bstop of auxiliary thermal source, and auxiliary thermal source and water pump stop
Only work.
S107, judges whether T5 ＜ MIN (TS, Tstop)-Tr sets up.If it is, execution step S108；If not, continuing
Judge.
S108, opens heat pump main frame, to heat to the water in water tank by heat pump main frame.
S109, judges whether T5 >=MIN (TS, Tstop) sets up.If it is, execution step S110；If not, continuing logical
Cross heat pump main frame the water in water tank is heated.
S110, the water temperature T 5 in water tank has reached the shutdown temperature Tstop or design temperature TS of heat pump main frame, heat pump
Main frame quits work.
S111, judges whether water-flow signal has been detected.If it is, execution step S112；If not, real-time judge.
S112, controls auxiliary thermal source to open, the water flowing out from water tank is quickly heated so that heat pump water-heating machine
The water temperature of the water outlet of group is rapidly achieved water temperature needed for user, and in the process, water pump is in stopped status.
S113, judges whether T6 >=T6S sets up.If it is, execution step S114；If not, continuing to judge.
S114, the water temperature T 6 of the water outlet of heat-pump hot-water unit reaches water temperature T 6S needed for user, controls water pump to open,
So that the water of high temperature to be back in water tank.
S115, judges whether T6 ＜ T6S-T6r sets up, and wherein, T6r is the start return difference temperature of water pump.If it is, execution
Step S116；If not, water pump is constantly in opening.
S116, controls water pump out of service.
S117, judges currently without water-flow signal.If it is, execution step S118；If not, real-time judge.
S118, active user stops using hot water, and auxiliary thermal source need not continue to heat, and now controls auxiliary thermal source to stop fortune
OK, control water pump to be in stopped status simultaneously.
In sum, the control method of combined heat pump Hot water units according to embodiments of the present invention, by ambient temperature
To select to be to start heat pump main frame, or to start auxiliary thermal source, if necessary to start heat pump main frame, then further according to outdoor ring
Border temperature determines the shutdown temperature of current heat pump main frame, and controls heat according to the water temperature of shutdown temperature, design temperature and water tank
The start and stop of pump main frame；If necessary to start auxiliary thermal source, then further the water temperature according to water tank controlling the start and stop of auxiliary thermal source,
To ensure that the water temperature in water tank will not be too low.And when user needs using hot water, directly control auxiliary thermal source to be heated, protect
The water temperature of the water outlet of card heat-pump hot-water unit meets user's request.Thus controlling by reasonable, water temperature not only can be made
It is rapidly achieved user's request, and the efficiency of unit can be improved, reach the purpose of energy-conservation.
The embodiment of the combined heat pump Hot water units of the present invention is described below in detail.
As shown in Fig. 2 combined heat pump Hot water units may include：Heat pump main frame 1, auxiliary thermal source 2, water tank 3, water pump 4, temperature
Degree acquiring unit and control unit (in figure is not specifically illustrated).
Wherein, temperature acquiring unit is used for obtaining current outdoor ambient temperature, and obtains the water temperature of water tank 3, for example, temperature
Acquiring unit can include two temperature sensors, and wherein, a temperature sensor is used for detecting outdoor environment temperature, another
Temperature sensor is used for detecting the water temperature of water tank 3.Control unit respectively with heat pump main frame 1, auxiliary thermal source 2 and temperature acquiring unit
It is connected, control unit is used for according to the water temperature of current outdoor ambient temperature and water tank 3, heat pump main frame 1 and auxiliary thermal source 2 being carried out
On off control.Wherein, auxiliary thermal source 2 can be gas furnace or electric heater etc..
Specifically, no matter being at low ambient temperatures or under hot environment, if the design temperature control according only to water tank 3
The start and stop of heat pump main frame 1 in heat-pump hot-water unit processed, when the heating capacity of heat pump main frame 1 is not enough, automatically turn on auxiliary thermal source
2, then, because, under low temperature environment, the heating capacity of heat-pump hot-water unit is low, and efficiency is low, therefore easily cause the wave of the energy
Take.And at a temperature of varying environment, under different water tank temperatures, the efficiency of heating surface of auxiliary thermal source 2 is basically unchanged, so, Ke Yigen
To control the start and stop of heat pump main frame 1 and auxiliary thermal source 2 according to the water temperature of outdoor environment temperature and water tank 3 so that controlling more adduction
Reason, thus improving the efficiency of unit, reaches the purpose of energy-conservation.
According to one embodiment of present invention, control unit according to the water temperature of current outdoor ambient temperature and water tank 3 to heat
When pump main frame 1 and auxiliary thermal source 2 carry out on off control, wherein, whether control unit judges current outdoor ambient temperature less than the
One preset temperature, if current outdoor ambient temperature is less than the first preset temperature, control unit then determines whether the water of water tank 3
Whether temperature is less than the second preset temperature, if the water temperature of water tank 3 is less than the second preset temperature, control unit then controls auxiliary thermal source
2 unlatchings, and control heat pump main frame 1 to be in stopped status.
It should be noted that the first preset temperature T4bstart refers to that heat pump main frame 1 does not run, and auxiliary thermal source 2 is permissible
Corresponding outdoor environment temperature during operation, generally -7～7 DEG C of the scope of this value.Second preset temperature T2 refers to auxiliary thermal source
Difference between start return difference temperature Trb of 2 shutdown temperature T5bstop and auxiliary thermal source 2, wherein, the shutdown of auxiliary thermal source 2
Generally 30～40 DEG C of temperature T5bstop.
Specifically, when heat-pump hot-water unit is opened, control unit first judges whether current outdoor ambient temperature is less than
First preset temperature T4bstart (as 5 DEG C), if it is, explanation ambient temperature ratio is relatively low, does not now start heat pump main frame 1.
Then, control unit judges whether the water temperature T 5 of water tank 3 is less than shutdown temperature T5bstop (as 35 DEG C)-auxiliary of auxiliary thermal source 2
Start return difference temperature Trb of thermal source 2, if it is, the water temperature T 5 of explanation water tank 3 is too low, now control unit controls auxiliary heat
Source 2 starts, until the water temperature T 5 of water tank 3 reaches the shutdown temperature T5bstop of auxiliary thermal source 2, control unit controls auxiliary thermal source 2
Out of service.Thus at low ambient temperatures, when water tank water temperature is relatively low, auxiliary thermal source is directly controlled to open, due to auxiliary thermal source
The efficiency of heating surface under low temperature environment and relatively low water temperature is basically unchanged, thus effectively increases the efficiency of heat-pump hot-water unit, reaches
Purpose to energy-conservation.
Further, according to one embodiment of present invention, control unit is according to current outdoor ambient temperature and water tank 3
When water temperature carries out on off control to heat pump main frame 1 and auxiliary thermal source 2, wherein, if current outdoor ambient temperature is more than or equal to the
One preset temperature, control unit then determines whether whether the water temperature of water tank 3 is less than the 3rd preset temperature, if the water of water tank 3
Temperature is less than the 3rd preset temperature, and control unit then controls heat pump main frame 1 to open, and controls auxiliary thermal source 2 to be closed.
It should be noted that the 3rd preset temperature T3 refers to design temperature TS and heat pump main frame 1 in different outdoor environment temperature
Under degree the smaller value between corresponding shutdown temperature Tstop from heat pump main frame 1 the start return difference at a temperature of different outdoor environments
Difference between temperature Tr, i.e. T3=MIN (TS, Tstop)-Tr.Wherein, generally 38-70 DEG C of design temperature TS, heat pump main frame
1 at a temperature of different outdoor environments corresponding shutdown temperature Tstop can be obtained by experiment test.
Specifically, when heat-pump hot-water unit is opened, control unit first judges whether current outdoor ambient temperature is less than
First preset temperature T4bstart (as 5 DEG C), if it is not, then explanation current environmental temperature is higher, now need not start auxiliary
Thermal source 2, can meet demand by opening heat pump main frame 1.Then, control unit obtains heat according to current outdoor ambient temperature T4
The shutdown temperature Tstop of pump main frame 1, and whether judge the water temperature T 5 of water tank 3 less than MIN (TS, Tstop)-Tr, if it is, control
Unit processed then opens heat pump main frame 1, until the water temperature T 5 of water tank 3 reaches MIN (TS, Tstop), controls heat pump main frame 1 to shut down.
Therefore, combined heat pump Hot water units according to embodiments of the present invention, by arranging stopping of rational heat pump main frame
Machine temperature and the shutdown temperature of auxiliary thermal source, and hot to heat pump main frame and auxiliary according to the water temperature of outdoor environment temperature and water tank
Source carries out on off control so that the efficiency of heat-pump hot-water unit reaches maximum, thus realizing the purpose of energy-conservation.
According to one embodiment of present invention, above-mentioned combined heat pump Hot water units, also include：Current detector unit
(in figure is not specifically illustrated), current detector unit is connected with control unit, and current detector unit is used for judging currently whether there is water
Stream signal, wherein, if currently there being water-flow signal, control unit then controls auxiliary thermal source 2 to open, and real-time judge heat-pump hot-water
Whether the water temperature of the water outlet of unit is more than or equal to the 4th preset temperature, and the water temperature of the water outlet in heat-pump hot-water unit
During more than or equal to four preset temperatures, water pump 4 is controlled to open the water of the water outlet to bypass auxiliary thermal source 2 to water tank 3.
Specifically, when user uses hot water, so that the water temperature of the water outlet of heat-pump hot-water unit quickly reaches
To the water temperature of user setup, when heat-pump hot-water unit is opened, control unit is also by current detector unit (as water ga(u)ge)
Whether real-time judge has water-flow signal.If there are water-flow signal, control unit is then opened auxiliary thermal source 2 and is heated.Meanwhile, control
Whether the water temperature T 6 of the water outlet of unit real-time judge heat-pump hot-water unit processed is more than the 4th preset temperature T6S.If it is, control
Unit processed then controls water pump 4 to open, so that the water of auxiliary thermal source 2 is back in water tank 3, until the outlet of heat-pump hot-water unit
The water temperature at place is slightly less than the 4th preset temperature T6S, thus preventing water temperature over-high and scalding user.Without water-flow signal, control
Unit processed then directly controls auxiliary thermal source 2 out of service, and keeps water pump 4 to be closed.Thus by controlling auxiliary heat
Source is making the water temperature of heat-pump hot-water unit be rapidly achieved water temperature needed for user, and need not all ensure the water temperature in water tank all the time
Reach water temperature needed for user, greatly reduce the operation duration of heat pump main frame and auxiliary thermal source, and then reached the purpose of energy-conservation.
To sum up, combined heat pump Hot water units according to embodiments of the present invention, select by ambient temperature to be to start heat
Pump main frame, or start auxiliary thermal source, if necessary to start heat pump main frame, then determined current further according to outdoor environment temperature
The shutdown temperature of heat pump main frame, and control the start and stop of heat pump main frame according to the water temperature of shutdown temperature, design temperature and water tank；As
Fruit needs to start auxiliary thermal source, then further the water temperature according to water tank controlling the start and stop of auxiliary thermal source, to ensure in water tank
Water temperature will not be too low.And when user needs using hot water, directly control auxiliary thermal source to be heated it is ensured that heat-pump hot-water unit
The water temperature of water outlet meet user's request.Thus being controlled by reasonable, water temperature not only can be made to be rapidly achieved user to be needed
Ask, and the efficiency of unit can be improved, reach the purpose of energy-conservation.
In describing the invention it is to be understood that term " " center ", " longitudinal ", " horizontal ", " length ", " width ",
" thickness ", " on ", D score, "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom " " interior ", " outward ", " up time
The orientation of instruction such as pin ", " counterclockwise ", " axial ", " radially ", " circumferential " or position relationship be based on orientation shown in the drawings or
Position relationship, is for only for ease of the description present invention and simplifies description, rather than the device of instruction or hint indication or element must
Must have specific orientation, with specific azimuth configuration and operation, be therefore not considered as limiting the invention.
Additionally, term " first ", " second " are only used for describing purpose, and it is not intended that indicating or hint relative importance
Or the implicit quantity indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can express or
Implicitly include at least one this feature.In describing the invention, " multiple " are meant that at least two, such as two, three
Individual etc., unless otherwise expressly limited specifically.
In the present invention, unless otherwise clearly defined and limited, term " installation ", " being connected ", " connection ", " fixation " etc.
Term should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected or integral；Can be that machinery connects
Connect or electrically connect；Can be to be joined directly together it is also possible to be indirectly connected to by intermediary, can be in two elements
The connection in portion or the interaction relationship of two elements, limit unless otherwise clear and definite.For those of ordinary skill in the art
For, above-mentioned term concrete meaning in the present invention can be understood as the case may be.
In the present invention, unless otherwise clearly defined and limited, fisrt feature second feature " on " or D score permissible
It is the first and second feature directly contacts, or the first and second features pass through intermediary mediate contact.And, fisrt feature exists
Second feature " on ", " top " and " above " but fisrt feature are directly over second feature or oblique upper, or be merely representative of
Fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " lower section " and " below " can be
One feature is immediately below second feature or obliquely downward, or is merely representative of fisrt feature level height and is less than second feature.
In the description of this specification, reference term " embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or the spy describing with reference to this embodiment or example
Point is contained at least one embodiment or the example of the present invention.In this manual, to the schematic representation of above-mentioned term not
Identical embodiment or example must be directed to.And, the specific features of description, structure, material or feature can be in office
Combine in an appropriate manner in one or more embodiments or example.Additionally, in the case of not conflicting, the skill of this area
The feature of the different embodiments described in this specification or example and different embodiment or example can be tied by art personnel
Close and combine.
Although embodiments of the invention have been shown and described above it is to be understood that above-described embodiment is example
Property it is impossible to be interpreted as limitation of the present invention, those of ordinary skill in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, changes, replacing and modification.
Claims (10)
1. a kind of control method of combined heat pump Hot water units is it is characterised in that described combined heat pump Hot water units include
Heat pump main frame, auxiliary thermal source, water tank and water pump, the method comprising the steps of：
Obtain current outdoor ambient temperature, and obtain the water temperature of described water tank；And
Water temperature according to described current outdoor ambient temperature and described water tank is carried out to described heat pump main frame and described auxiliary thermal source
On off control.
2. the control method of combined heat pump Hot water units as claimed in claim 1 is it is characterised in that work as described in described basis
The water temperature of front outdoor environment temperature and described water tank carries out on off control to described heat pump main frame and described auxiliary thermal source, including：
Judge whether described current outdoor ambient temperature is less than the first preset temperature；
If described current outdoor ambient temperature is less than described first preset temperature, determine whether that the water temperature of described water tank is
No it is less than the second preset temperature；
If the water temperature of described water tank is less than described second preset temperature, control described auxiliary thermal source to open, and control described
Heat pump main frame is in stopped status.
3. the control method of combined heat pump Hot water units as claimed in claim 2 is it is characterised in that work as described in described basis
The water temperature of front outdoor environment temperature and described water tank carries out on off control to described heat pump main frame and described auxiliary thermal source, also wraps
Include：
If described current outdoor ambient temperature is more than or equal to described first preset temperature, determine whether the water of described water tank
Whether temperature is less than the 3rd preset temperature；
If the water temperature of described water tank is less than described 3rd preset temperature, control described heat pump main frame to open, and control described
Auxiliary thermal source is closed.
4. the control method of the combined heat pump Hot water units as any one of claim 1-3 is it is characterised in that also wrap
Include：
Judge currently whether there is water-flow signal；
If currently there being described water-flow signal, described auxiliary thermal source is controlled to open, and the going out of real-time judge heat-pump hot-water unit
Whether the water temperature at the mouth of a river is more than or equal to the 4th preset temperature；
If the water temperature of the water outlet of described heat-pump hot-water unit is more than or equal to described 4th preset temperature, control described water
Pump opens the water of the water outlet to bypass described auxiliary thermal source to described water tank.
5. the control method of combined heat pump Hot water units as claimed in claim 1 is it is characterised in that described auxiliary thermal source is
Gas furnace or electric heater.
6. a kind of combined heat pump Hot water units are it is characterised in that include：
Heat pump main frame；
Auxiliary thermal source；
Water tank；
Water pump；
Temperature acquiring unit, for obtaining current outdoor ambient temperature, and obtains the water temperature of described water tank；
Control unit, described control unit respectively with described heat pump main frame, described auxiliary thermal source and described temperature acquiring unit phase
Even, described control unit is used for water temperature according to described current outdoor ambient temperature and described water tank to described heat pump main frame and institute
State auxiliary thermal source and carry out on off control.
7. combined heat pump Hot water units as claimed in claim 6 are it is characterised in that described control unit is according to described current
When the water temperature of outdoor environment temperature and described water tank carries out on off control to described heat pump main frame and described auxiliary thermal source, wherein,
Described control unit judges whether described current outdoor ambient temperature is less than the first preset temperature, if described current outdoor
Ambient temperature is less than described first preset temperature, and whether described control unit then determines whether the water temperature of described water tank less than the
Two preset temperatures, if the water temperature of described water tank is less than described second preset temperature, described control unit then controls described auxiliary
Thermal source is opened, and controls described heat pump main frame to be in stopped status.
8. combined heat pump Hot water units as claimed in claim 7 are it is characterised in that described control unit is according to described current
When the water temperature of outdoor environment temperature and described water tank carries out on off control to described heat pump main frame and described auxiliary thermal source, wherein,
If described current outdoor ambient temperature is more than or equal to described first preset temperature, described control unit then determines whether
Whether the water temperature of described water tank is less than the 3rd preset temperature, if the water temperature of described water tank is less than described 3rd preset temperature, institute
Stating control unit then controls described heat pump main frame to open, and controls described auxiliary thermal source to be closed.
9. the combined heat pump Hot water units as any one of claim 6-8 are it is characterised in that also include：Current are examined
Survey unit, described current detector unit is connected with described control unit, and described current detector unit is used for judging currently whether have
Water-flow signal, wherein,
If currently there being described water-flow signal, described control unit then controls described auxiliary thermal source to open, and real-time judge heat pump
Whether the water temperature of the water outlet of Hot water units is more than or equal to the 4th preset temperature, and the outlet in described heat-pump hot-water unit
When the water temperature at place is more than or equal to described four preset temperature, described water pump is controlled to open to bypass the outlet of described auxiliary thermal source
The water at place is to described water tank.
10. combined heat pump Hot water units as claimed in claim 6 it is characterised in that described auxiliary thermal source be gas furnace or
Electric heater.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610848328.8A CN106403305A (en) | 2016-09-23 | 2016-09-23 | Combined heat pump water heater unit and control method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610848328.8A CN106403305A (en) | 2016-09-23 | 2016-09-23 | Combined heat pump water heater unit and control method thereof |
Publications (1)
| Publication Number | Publication Date |
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| CN106403305A true CN106403305A (en) | 2017-02-15 |
Family
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610848328.8A Pending CN106403305A (en) | 2016-09-23 | 2016-09-23 | Combined heat pump water heater unit and control method thereof |
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| CN107676858A (en) * | 2017-10-20 | 2018-02-09 | 暖卫仕（北京）热能科技发展有限公司 | heating system |
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| CN107461925A (en) * | 2017-08-14 | 2017-12-12 | 宁波奥克斯电气股份有限公司 | A kind of heat pump machine and antifreeze control method |
| CN107676858A (en) * | 2017-10-20 | 2018-02-09 | 暖卫仕（北京）热能科技发展有限公司 | heating system |
| CN107676858B (en) * | 2017-10-20 | 2020-02-07 | 暖卫仕（北京）热能科技发展有限公司 | Heating system |
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| CN109307362A (en) * | 2018-10-31 | 2019-02-05 | 浙江工业大学 | Efficient extremely low temperature Trans-critical cycle overlapping air source heat pump water heater |
| CN109307364A (en) * | 2018-10-31 | 2019-02-05 | 浙江工业大学 | Efficient extremely low temperature two stages of compression Trans-critical cycle air source hot pump water heater |
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| CN109307363B (en) * | 2018-10-31 | 2024-04-16 | 浙江工业大学 | High-efficiency ultralow-temperature transcritical air source heat pump water heater |
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| CN111426012B (en) * | 2020-04-15 | 2021-11-02 | 珠海格力电器股份有限公司 | Heat pump control method and device for sectional control of water temperature and air conditioning unit |
| CN111735242A (en) * | 2020-06-28 | 2020-10-02 | 广东华天成新能源科技股份有限公司 | Intelligent control scheme of heat pump system |
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Application publication date: 20170215 |