CN108662786A - Water-heater system and its control method - Google Patents
Water-heater system and its control method Download PDFInfo
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- CN108662786A CN108662786A CN201710206382.7A CN201710206382A CN108662786A CN 108662786 A CN108662786 A CN 108662786A CN 201710206382 A CN201710206382 A CN 201710206382A CN 108662786 A CN108662786 A CN 108662786A
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- regulation device
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- 238000000034 method Methods 0.000 title claims abstract description 30
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 900
- 238000001514 detection method Methods 0.000 claims abstract description 39
- 238000010438 heat treatment Methods 0.000 claims abstract description 28
- 230000001105 regulatory effect Effects 0.000 claims description 14
- 230000002159 abnormal effect Effects 0.000 abstract description 4
- 230000001276 controlling effect Effects 0.000 description 15
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 description 13
- 238000009841 combustion method Methods 0.000 description 6
- 238000004891 communication Methods 0.000 description 6
- 238000003287 bathing Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 238000007689 inspection Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 206010053615 Thermal burn Diseases 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 230000003111 delayed effect Effects 0.000 description 2
- 238000012279 drainage procedure Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012857 repacking Methods 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 235000000396 iron Nutrition 0.000 description 1
- 238000010409 ironing Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
Classifications
-
- 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
- F24H9/2014—Arrangement or mounting of control or safety devices for water heaters using electrical energy supply
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Domestic Hot-Water Supply Systems And Details Of Heating Systems (AREA)
Abstract
The invention discloses a kind of water-heater system and its control methods, including：Water temperature regulation device, with hot water end and cold water end；Water heater, it includes that the cold water pipeline being connected with the cold water end of water temperature regulation device, the hot water line, heating unit and the control unit being connected with heating unit, the control unit that are connected with the hot water end of water temperature regulation device are also communicated with water temperature regulation device；Flow detection unit is used to detect the cold water flow of the cold water pipeline of water heater, is communicated with control unit cold water flow is sent to control unit；Wherein, it opens at the hot water end that control unit delay preset time after cold water flow is more than first flow threshold value controls water temperature regulation device, so as to control water temperature regulation device according to the real data of water-heater system, avoid the occurrence of the case where short time high temperature having one's hair waved is to user, improve the security performance of system, system erroneous judgement can be avoided to lead to abnormal output hot water simultaneously, improve control accuracy.
Description
Technical field
The present invention relates to household electrical appliance technical field, more particularly to a kind of water-heater system and a kind of control of water-heater system
Method processed.
Background technology
With the improvement of living standards, user is more and more to the functional requirement of household electrical appliance, and Household shower bath usually makes
Use electric heater.User is needed to adjust water temperature manually during the use of electric heater, in the related art, user is usually logical
It crosses and water temperature regulation device (such as thermostatic valve) is voluntarily installed to carry out thermostatic control, to improve the convenience used.But it is related
Technology has the drawback that, the thermostatic valve that user voluntarily installs has no related to the characteristic of water heater itself, therefore, utilizes hot water
The speed of device system progress thermostatic control is solely dependent upon the parameter of valve body itself, and the effect of regulating thermostatic temperature is poor, due to heat
The hot water temperature of hydrophone can reach 80 DEG C, once short time high temperature water occurs in water outlet, be easy to cause user's scald, influences to use
Safety.
Therefore, the relevant technologies needs are improved.
Invention content
The present invention is directed to solve at least some of the technical problems in related technologies.For this purpose, the present invention
One purpose is to propose a kind of water-heater system, which can avoid the occurrence of the case where short time high temperature having one's hair waved is to user, carry
The high security performance of system.
It is another object of the present invention to propose a kind of control method of water-heater system.
In order to achieve the above objectives, a kind of water-heater system that one aspect of the present invention embodiment proposes, including：Lower water temperature fills
It sets, the water temperature regulation device has hot water end and cold water end；Water heater, the water heater include and the water temperature regulation device
Cold water end be connected cold water pipeline, be connected with the hot water end of the water temperature regulation device hot water line, heating unit
The control unit being connected with heating unit, described control unit are also communicated with the water temperature regulation device；Flow detection
Unit, the flow detection unit are used to detect the cold water flow of the cold water pipeline of the water heater, the flow detection unit
It is communicated with described control unit the cold water flow is sent to described control unit；Wherein, described control unit is described
It opens at the hot water end that cold water flow controls the water temperature regulation device more than the preset time that is delayed after first flow threshold value.
The water-heater system proposed according to embodiments of the present invention, water temperature regulation device have hot water end and cold water end, control
Unit is communicated with water temperature regulation device, and flow detection unit detects the cold water flow of the cold water pipeline of water heater, and will be cold
Water flow is sent to control unit, and control unit delay preset time after cold water flow is more than first flow threshold value controls water
The hot water end of warm regulating device is opened, and so as to control water temperature regulation device according to the real data of water-heater system, is avoided
There is the case where short time high temperature having one's hair waved is to user, improves the security performance of system, while it is different that system erroneous judgement can be avoided to cause
Often output hot water, improves control accuracy.
According to one embodiment of present invention, described control unit is less than second flow threshold value time control in the cold water flow
The hot water end for making the water temperature regulation device is closed.
According to one embodiment of present invention, the second flow threshold value is greater than or equal to the first flow threshold value.
According to one embodiment of present invention, the water-heater system further includes：Temperature detecting unit, the temperature detection
Unit is used to detect the leaving water temperature of the water outlet of the water temperature regulation device, the temperature detecting unit and described control unit
The leaving water temperature is sent to described control unit, described control unit is discharged in the leaving water temperature less than target for communication
The hot water flow that the hot water end of the water temperature regulation device is controlled when temperature increases, until the leaving water temperature reaches the target
Leaving water temperature.
According to one embodiment of present invention, the water temperature regulation device includes thermostatic valve.
In order to achieve the above objectives, another aspect of the present invention embodiment proposes a kind of control method of water-heater system, institute
It includes water temperature regulation device and water heater to state water-heater system, and the water temperature regulation device has hot water end, cold water end and water outlet
End, the water heater include the cold water pipeline being connected with the cold water end of the water temperature regulation device, are filled with the lower water temperature
The hot water line and heating unit that the hot water end set is connected, the described method comprises the following steps：Detect the water heater
The cold water flow of cold water pipeline；Water heater delay preset time control after the cold water flow is more than first flow threshold value
It opens at the hot water end for making the water temperature regulation device.
The control method of the water-heater system proposed according to embodiments of the present invention detects the cold water pipeline of water heater in real time
Cold water flow, water heater delay preset time after cold water flow is more than first flow threshold value control the heat of water temperature regulation device
Water end (W.E.) is opened, and so as to control water temperature regulation device according to the real data of water-heater system, avoids the occurrence of short time high temperature water
The case where ironing user improves the security performance of system, while system erroneous judgement can be avoided to lead to abnormal output hot water, improves
Control accuracy.
According to one embodiment of present invention, the control method of the water-heater system further includes：The water heater is in institute
The hot water end that the water temperature regulation device is controlled when stating cold water flow less than second flow threshold value is closed.
According to one embodiment of present invention, the second flow threshold value is greater than or equal to the first flow threshold value.
According to one embodiment of present invention, the control method of the water-heater system further includes：Detect the water temperature tune
The leaving water temperature of the water outlet of regulating device；The water heater controls the water when the leaving water temperature is less than target leaving water temperature
The hot water flow at the hot water end of warm regulating device increases, until the leaving water temperature reaches the target leaving water temperature.
According to one embodiment of present invention, the water temperature regulation device includes thermostatic valve.
Description of the drawings
Fig. 1 is the block diagram of water-heater system according to the ... of the embodiment of the present invention；
Fig. 2 is the block diagram of water-heater system according to an embodiment of the invention；
Fig. 3 is the structural schematic diagram of water-heater system according to an embodiment of the invention；
Fig. 4 is the flow chart of the control method of water-heater system according to the ... of the embodiment of the present invention；And
Fig. 5 is the flow chart of the control method of water-heater system accord to a specific embodiment of that present invention.
Reference numeral：
Water temperature regulation device 10, water heater 20 and flow detection unit 30；
Cold water pipeline 40, hot water line 50, heating unit 60 and control unit 70；
Temperature detecting unit 80.
Specific implementation mode
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end
Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached
The embodiment of figure description is exemplary, it is intended to for explaining the present invention, and is not considered as limiting the invention.
Below with reference to the accompanying drawings the water-heater system and its control method of the embodiment of the present invention described.
Fig. 1 is the block diagram of water-heater system according to the ... of the embodiment of the present invention.As shown in Figure 1, water-heater system packet
It includes：Water temperature regulation device 10, water heater 20 and flow detection unit 30.
Wherein, water temperature regulation device 10 has hot water end B and cold water end A；Water heater 20 includes and water temperature regulation device 10
Cold water end A be connected cold water pipeline 40, be connected with the hot water end B of water temperature regulation device 10 hot water line 50, heating
Unit 60 and the control unit 70 being connected with heating unit 60, control unit 70 are also communicated with water temperature regulation device 10；Stream
Amount detection unit 30 is used to detect the cold water flow of the cold water pipeline 40 of water heater 20, flow detection unit 30 and control unit 70
Communication by cold water flow to be sent to control unit 70；Wherein, control unit 70 is more than first flow threshold value (example in cold water flow
Such as 2L/min) after delay preset time (such as 2s) control water temperature regulation device 10 hot water end B open.
According to one embodiment of present invention, water temperature regulation device 10 includes thermostatic valve.Wherein, thermostatic valve can be electric control constant
Warm valve.
Specifically, in one embodiment of the invention, control unit 70 can respectively with water temperature regulation device 10 and stream
Amount detection unit 30 carries out wireless communication, such as can be communicated by wireless communication techniques such as WIFI, bluetooths, to obtain flow
The cold water flow that detection unit 30 detects, and water temperature regulation device 10 is controlled according to cold water flow and is turned on and off.Alternatively, hot
The control unit 70 of hydrophone 20 can be connected directly with water temperature regulation device 10 and flow detection unit 30 respectively, to obtain flow inspection
The cold water flow that unit 30 detects is surveyed, and water temperature regulation device 10 is controlled according to cold water flow and is turned on and off.
According to one embodiment of present invention, as shown in figure 3, flow detection unit 30 may be provided in cold water pipeline 40 with
Detect the cold water flow of the cold water pipeline 40 of water heater 20, wherein flow detection unit 30 may include that water flow sensing unit, control are single
Member 70 obtains the cold water flow of cold water pipeline 40 in real time, and sentences when cold water flow is more than preset flow threshold value (such as 2L/min)
Disconnected water-heater system enters water exit mode.
More specifically, as shown in figure 3, the cold water pipeline 40 of water heater 20 includes the first cold water branch and the second cold water branch
Road, the cold water end A of thermostatic valve are connected with the first cold water branch of water heater 20, permanent to receive the cold water of the offer of cold water pipeline 40
The hot water end B of warm valve is connected with the hot water line 50 of water heater 20, to receive the hot water of the offer of hot water line 50.Flow detection list
The detection cold water flow in real time of member 30, when the cold water flow that flow detection unit 30 detects is less than first flow threshold value (such as 2L/
When min), control unit 70 controls water temperature regulation device 10 and closes, to avoid the hot water outflow in water heater 20；Work as flow detection
The cold water flow that unit 30 detects be more than first flow threshold value (such as 2L/min) and duration reach preset time (such as
When 2s), control unit 70 controls water temperature regulation device 10 and opens, and is mixed to hot water or cold water so that leaving water temperature by
Step reaches target leaving water temperature.
After the booting of water heater 20, control unit 70 first initializes cold water flow data, and controls water temperature regulation device
10 hot water end B is closed.When carrying out bathing using water heater 20, cold water injects water heater 20, heat by the second cold water branch
Hydrophone 20 heats cold water by heating unit 60, and the hot water after heating is delivered to thermostatic valve by hot water line 50
Hot water end B, the cold water flow of the cold water pipeline 40 of detection water heater 20 in real time of flow detection unit 30 and sends out cold water flow
It send to control unit 70, control unit 70 judges whether cold water flow is more than first flow threshold value (such as 2L/min).If cold
Water flow is less than first flow threshold value (such as 2L/min), and the hot water end B that control unit 70 then controls thermostatic valve is remained turned-off, with
The hot water in water heater 20 is avoided to flow out；If cold water flow is more than first flow threshold value such as 2L/min, if control unit 70
It controls water heater 20 and enters delay state, at this point, the hot water end B that control unit 70 controls thermostatic valve continues to close.When delay
Between when reaching preset time, illustrate that the cold water flow of cold water pipeline 40 is in stable state, at this point, control unit 70 controls constant temperature
The hot water end B of valve is opened.In turn, the water inlet ratio of the cold water end A and hot water end B of 70 regulating thermostatic valve of control unit, and to cold
Water and hot water are mixed, so that leaving water temperature progressively reaches target leaving water temperature.
Further, according to one embodiment of present invention, control unit 70 is less than second flow threshold value in cold water flow
The hot water end B that water temperature regulation device 10 is controlled when (such as 2L/min) is closed.
According to one embodiment of present invention, second flow threshold value is greater than or equal to first flow threshold value.
Specifically, when carrying out bathing using water heater 20, flow detection unit 30 detects the cold of water heater 20 in real time
The cold water flow of water lines 40, and cold water flow is sent to control unit 70, control unit 70 judges whether cold water flow is small
In second flow threshold value (such as 2L/min), if cold water flow is less than second flow threshold value (such as 2L/min), control unit
70 hot water end B quick closedowns for controlling water temperature regulation device 10；If cold water flow is more than or equal to second flow threshold value
(such as 2L/min), the hot water end B that control unit 70 then controls water temperature regulation device 10 are kept it turning on.
As a result, the water-heater system of the embodiment of the present invention according to cold water flow to the hot water end B of water temperature regulation device 10 into
Line delay controls, and the hot water end B quick closedowns of water temperature regulation device 10 are controlled when cold water flow is too low, is opened in water heater 20
The moment opened or closed can avoid the occurrence of the case where short time high temperature having one's hair waved is to user.
According to one embodiment of present invention, as shown in Fig. 2, water-heater system further includes：Temperature detecting unit 80, temperature
Detection unit 80 is used to detect the leaving water temperature of the water outlet C of water temperature regulation device 10, temperature detecting unit 80 and control unit
Leaving water temperature is sent to control unit 70, control unit 70 is controlled when leaving water temperature is less than target leaving water temperature for 70 communications
The hot water flow of the hot water end B of water temperature regulation device 10 increases, until leaving water temperature reaches target leaving water temperature.
It should be noted that target leaving water temperature can be such as 40 DEG C of the leaving water temperature that user is arranged by control panel.
In one embodiment of the invention, as shown in figure 3, temperature detecting unit 80 may include temperature sensor, wherein
Temperature sensor may be provided at the water outlet C of water temperature regulation device 10 to detect leaving water temperature.
Specifically, when water temperature regulation device 10 mixes hot water or cold water, temperature detecting unit 80 is examined in real time
The leaving water temperature of the water outlet C of water temperature regulation device 10 is surveyed, and leaving water temperature is sent to control unit 70, control unit 70 is sentenced
Whether disconnected leaving water temperature is less than target leaving water temperature, if leaving water temperature is less than target leaving water temperature, control unit 70 ifs controls
The hot water flow of the hot water end B of water temperature regulation device 10 increases, such as can increase the valve of the hot water end B of water temperature regulation device 10
Aperture, to increase the water inlet ratio of hot water end B；If leaving water temperature reaches target leaving water temperature, control unit 70 ifs, stops adjusting
Water temperature regulating device 10, so that the hot water end B of water temperature regulation device 10 carries out water filling according to current hot water flow, to logical
The water inlet ratio for overregulating the cold water end A and hot water end B of water temperature regulation device 10 can make leaving water temperature progressively reach target water outlet
Temperature.
As described above, the concrete operating principle of the water-heater system of the embodiment of the present invention is as follows.
When water heater 20 is not used in user, the cold water flow of cold water pipeline 40 is less than first flow threshold value such as 2L/
Min, the hot water end B that control unit 70 controls thermostatic valve are closed, to avoid the hot water outflow in water heater 20.Heat is used in user
When hydrophone 20, flow detection unit 30 detects the cold water flow of the cold water pipeline 40 of water heater 20 in real time, when cold water flow is more than
When first flow threshold value such as 2L/min, control unit 70 controls water heater 20 and enters delay state, at this point, control unit 70 is controlled
The hot water end B of thermostatic valve processed continues to remain turned-off.When delay time reaches preset time, illustrate the cold water stream of cold water pipeline 40
Amount is in stable state, at this point, the hot water end B that control unit 70 controls thermostatic valve is opened, and is mixed to hot water or cold water,
Meanwhile temperature detecting unit 80 detects the leaving water temperature of the water outlet C of water temperature regulation device 10 in real time.If leaving water temperature is less than
Target leaving water temperature, the hot water flow that control unit 70 then controls the hot water end B of water temperature regulation device 10 increase；If going out water temperature
Degree reaches target leaving water temperature, and control unit 70 then stops adjusting hot water flow, to by adjusting water temperature regulation device 10
The water inlet ratio of cold water end A and hot water end B, so that leaving water temperature progressivelyes reach target leaving water temperature.When flow detection unit 30
When detecting that cold water flow is less than first flow threshold value such as 2L/min again, control unit 70 controls water temperature regulation device 10
Hot water end B quick closedowns, to avoid occurring the case where short time high temperature scald user when water heater 20 is closed.
Further, according to one embodiment of present invention, after water heater 20 powers on, control unit 70 is additionally operable to obtain
The working condition of water heater 20, and control heating unit 60 when water heater 20 is in upper water state or hull-borne and stop work
Make and the cold water end A for controlling water temperature regulation device 10 is closed.
Specifically, when using water heater 20, water heater 20 includes upper water state, hull-borne and normal condition, heat
Operation principle of the hydrophone 20 under each working condition is as follows.
One, upper water state
In first time using water heater 20 or after carrying out liner cleaning to water heater 20, do not have in water heater 20
Water, to ensure there is water in water heater 20, prevents the dry combustion method after the power is turned on of water heater 20 at this time, it may be necessary to execute water operation.Due in heat
Water temperature regulation device 10 is provided in water heater system, when control unit 70 judges that water heater 20 is in upper water state, control is single
The cold water end A that member 70 controls water temperature regulation device 10 is closed, and the hot water end B for controlling water temperature regulation device 10 is opened completely, with
And control heating unit 60 is stopped, until the operation of upper water is completed, so as to avoid water heater 20 in upper water state mistiming
Heating causes dry combustion method or other security risks.
Two, hull-borne
When user needs to empty the hot water in water heater 20, need to execute drain operation, due in water-heater system
It is provided with water temperature regulation device 10, when control unit 70 judges that water heater 20 is in hull-borne, control unit 70 controls water
The cold water end A of warm regulating device 10 is closed, and the hot water end B for controlling water temperature regulation device 10 is opened completely, and control heating
Unit 60 is stopped, so as to improve the speed that water heater 20 empties hot water.
Three, normal condition
When control unit 70 judges that water heater 20 is in normal condition, control unit 70 is according to the work of water-heater system
Parameter (such as water temperature, flow) controls the cold water end A and hot water end B of water temperature regulation device 10, or directly controls lower water temperature dress
The hot water end B closings for setting 10, to avoid there is the case where short time high temperature having one's hair waved is to user, ensure the water safety of user.
The water-heater system of the embodiment of the present invention in water heater 20 by being in upper water state or hull-borne time control as a result,
Heating unit 60 processed is stopped, and the cold water end A for controlling water temperature regulation device 10 is closed, and water heater can be ensured in installation water
Repacking cost can be reduced with normal use, without increasing additional control device after warm regulating device 10, meanwhile, it avoids
Upper water either water heater accidentally dry combustion method or other safety failures caused by heating in drainage procedure, can ensure that water heater exists
Electriferous state either water or drain operation in the execution of off-position, improve product competitiveness.
Further, when water heater 20 is in normal condition, water-heater system is additionally operable to obtain the work of water-heater system
Make parameter (such as water temperature, flow etc.), and controls water temperature regulation device 10 in proportion.
According to one embodiment of present invention, water-heater system further includes：First temperature detecting unit and second temperature inspection
Survey unit, wherein the first temperature detecting unit is used to detect the water temperature in water heater 20, and the first temperature detecting unit is single with control
70 communication of member by the water temperature in water heater 20 to be sent to control unit 70；Second temperature detection unit is for detecting water heater 20
Cold water pipeline 40 cold water water temperature, second temperature detection unit communicates with control unit 70 cold water water temperature is sent to control
Unit 70；Wherein, control unit 70 precalculates cold and hot according to water temperature, cold water water temperature and the target output water temperature in water heater 20
Water mixed proportion, and when water-heater system enters water exit mode control water temperature regulation device 10 hot water end B and cold water end A by
It is opened according to hot and cold water mixed proportion to adjust the hot water flow by hot water end B and the cold water flow by cold water end A.
According to one embodiment of present invention, the first temperature detecting unit is arranged at the top of 20 liner of water heater, with inspection
Water temperature in calorimetric hydrophone 20.Second temperature detection unit may be provided at the water inlet of the cold water pipeline 40 of water heater 20, with inspection
Survey cold water water temperature.
Specifically, water heater 20 first obtains the water temperature and cold water water temperature in water heater 20, and according in water heater 20
Water temperature, cold water water temperature and target output water temperature precalculate hot and cold water mixed proportion.As an example it is assumed that the first temperature detection list
Water temperature in the water heater 20 of member detection is 80 DEG C, and the cold water water temperature of second temperature detection unit detection is 20 DEG C, target water outlet
Water temperature is 40 DEG C, then the hot and cold water mixed proportion that control unit 70 precomputes is 2:1, in other words, pass through the cold water of cold water end A
The ratio of flow and the hot water flow by hot water end B is 2:1.When water-heater system enters water exit mode, control unit 70
The cold water end A and hot water end B of water temperature regulation device 10 are controlled according to hot and cold water mixed proportion 2:1 opens, that is to say, that if logical
The cold water flow that water end (W.E.) A is subcooled is 2L/min, and it is 1L/min that control unit 70, which is then controlled through the hot water flow of hot water end B, with
The output water temperature of water outlet C is set to be within the preset range of target output water temperature.
It should be noted that control unit 70 can control the valve of the cold water end A and hot water end B of water temperature regulation device 10 respectively
Door aperture, to adjust the flow of inlet water by cold water end A and hot water end B, to adjust hot and cold water mixed proportion.Alternatively, water temperature
The valve opening of the cold water end A of regulating device 10 can remain unchanged, and control unit 70 controls the valve opening of hot water end B to adjust
Hot and cold water mixed proportion.
According to one embodiment of present invention, control unit 70 is additionally operable to when leaving water temperature is in stable state according to going out
Coolant-temperature gage and target output water temperature adjust hot and cold water mixed proportion, to control the hot water end B and cold water end A of water temperature regulation device 10
It is opened according to the hot and cold water mixed proportion after adjustment, so that leaving water temperature is maintained at target output water temperature.
Specifically, when water-heater system enters water exit mode, control unit 70 controls the cold of water temperature regulation device 10
Water end (W.E.) A and hot water end B is opened according to hot and cold water mixed proportion, and temperature detecting unit 80 detects going out for water temperature regulation device 10 in real time
The leaving water temperature of water end (W.E.) C, and the leaving water temperature of water outlet C is sent to control unit 70.It is in stable state in leaving water temperature
When, control unit 70 is finely adjusted hot and cold water mixed proportion according to the difference of leaving water temperature and target output water temperature, works as water outlet
When temperature is less than target output water temperature, the hot water flow that control unit 70 controls the hot water end B of water temperature regulation device 10 increases；When
When leaving water temperature reaches target output water temperature, control unit 70 stops adjusting water temperature regulation device 10, and controls lower water temperature dress
It sets 10 hot water end B and cold water end A to open according to the hot and cold water mixed proportion after adjustment, so that leaving water temperature is maintained at target and goes out
Water water temperature.
To sum up, the water-heater system proposed according to embodiments of the present invention, water temperature regulation device have hot water end and cold water end,
Control unit is communicated with water temperature regulation device, and flow detection unit detects the cold water flow of the cold water pipeline of water heater, and
Cold water flow is sent to control unit, control unit delay preset time control after cold water flow is more than first flow threshold value
The hot water end of water temperature regulation device processed is opened, so as to control water temperature regulation device according to the real data of water-heater system,
The case where short time high temperature having one's hair waved is to user is avoided the occurrence of, improves the security performance of system, while system erroneous judgement can be avoided to lead
Abnormal output hot water is caused, control accuracy is improved.
The invention also provides a kind of control methods of water-heater system.
Fig. 4 is the flow chart of the control method of water-heater system according to the ... of the embodiment of the present invention.Water-heater system includes water
There is hot water end, cold water end and water outlet, water heater to include and lower water temperature for warm regulating device and water heater, water temperature regulation device
Cold water pipeline that the cold water end of device is connected, the hot water line being connected with the hot water end of water temperature regulation device and heating are single
Member, as shown in figure 4, the control method of water-heater system includes the following steps：
S10：Detect the cold water flow of the cold water pipeline of water heater.
S20：Water heater cold water flow be more than first flow threshold value (such as 2L/min) after be delayed preset time (such as
2s) the hot water end of control water temperature regulation device is opened.
According to one embodiment of present invention, water temperature regulation device includes thermostatic valve.Wherein, thermostatic valve can be electric control constant-temperature
Valve.
Specifically, the cold water pipeline of water heater includes the first cold water branch and the second cold water branch, the cold water of thermostatic valve
End is connected with the first cold water branch of water heater, to receive the cold water of cold water pipeline offer, the hot water end of thermostatic valve and water heater
Hot water line be connected, with receive hot water line offer hot water.When cold water flow is less than first flow threshold value (such as 2L/
When min), control water temperature regulation device is closed, to avoid the hot water outflow in water heater；When cold water flow is more than first flow threshold
Value (such as 2L/min) the and when duration reaches preset time, control water temperature regulation device is opened, and to hot water or cold water into
Row mixing, so that leaving water temperature progressively reaches target leaving water temperature.
More specifically, after water heater booting, cold water flow data are first initialized, and control the heat of water temperature regulation device
Water end (W.E.) is closed.When carrying out bathing using water heater, cold water injects water heater by the second cold water branch, and water heater passes through heating
Unit heats cold water, and the hot water after heating is delivered to the hot water end of thermostatic valve by hot water line, water heater
Flow detection unit detects the cold water flow of the cold water pipeline of water heater in real time, and judges whether cold water flow is more than first flow
Threshold value (such as 2L/min).If cold water flow is less than first flow threshold value (such as 2L/min), the hot water of thermostatic valve is controlled
End remains turned-off, to avoid the hot water outflow in water heater；If cold water flow is more than first flow threshold value (such as 2L/min),
It then controls water heater and enters delay state, at this point, the hot water end of control unit control thermostatic valve continues to close.When prolonging for water heater
When time when reaching preset time (such as 2s), illustrate that the cold water flow of cold water pipeline is in stable state, at this point, control constant temperature
It opens at the hot water end of valve.In turn, the water inlet ratio at the cold water end and hot water end of regulating thermostatic valve, and hot water or cold water is mixed
It closes, so that leaving water temperature progressively reaches target leaving water temperature.
Further, according to one embodiment of present invention, the control method of water-heater system further includes：Water heater is cold
The hot water end of control water temperature regulation device is closed when water flow is less than second flow threshold value (such as 2L/min).
According to one embodiment of present invention, second flow threshold value is greater than or equal to first flow threshold value.
Specifically, when carrying out bathing using water heater 20, the flow detection unit of water heater detects water heater in real time
Cold water pipeline cold water flow, and judge cold water flow whether be less than second flow threshold value (such as 2L/min), if cold water
Flow is less than second flow threshold value (such as 2L/min), then controls the hot water end quick closedown of water temperature regulation device；If cold water
Flow is more than or equal to second flow threshold value (such as 2L/min), then the hot water end for controlling water temperature regulation device is kept it turning on.
In this way, the water-heater system of the embodiment of the present invention prolongs the hot water end of water temperature regulation device according to cold water flow
When control, and when cold water flow is too low control water temperature regulation device the quick closedown of hot water end, water heater open or close
The moment closed can avoid the occurrence of the case where short time high temperature having one's hair waved is to user.
According to one embodiment of present invention, heat is judged when cold water flow is more than preset flow threshold value (such as 2L/min)
Water heater system enters water exit mode.
According to one embodiment of present invention, the control method of water-heater system further includes：Detect water temperature regulation device
The leaving water temperature of water outlet；Water heater hot water end of control water temperature regulation device when leaving water temperature is less than target leaving water temperature
Hot water flow increases, until leaving water temperature reaches target leaving water temperature.
It should be noted that target leaving water temperature can be such as 40 DEG C of the leaving water temperature that user is arranged by control panel.
Specifically, when water temperature regulation device mixes hot water or cold water, the temperature detecting unit of water heater is real
When detection water temperature regulation device water outlet leaving water temperature, and judge leaving water temperature whether be less than target leaving water temperature, if
Leaving water temperature is less than target leaving water temperature, then the hot water flow for controlling the hot water end of water temperature regulation device increases, such as can increase
The valve opening at the hot water end of water temperature regulation device, to increase the water inlet ratio at hot water end；Go out if leaving water temperature reaches target
Coolant-temperature gage then stops adjusting water temperature regulation device, so that the hot water end of water temperature regulation device is carried out according to current hot water flow
Water filling can be such that leaving water temperature progressivelyes reach to the water inlet ratio at cold water end and hot water end by adjusting water temperature regulation device
Target leaving water temperature.
As described above, as shown in figure 5, the control method of the water-heater system of the embodiment of the present invention specifically includes following step
Suddenly.
S101：It executes water temperature regulation device and controls subprogram, initialize cold water flow data, and control water temperature regulation device
Hot water end close.
S102：Detect the cold water flow of the cold water pipeline of water heater.
S103：Judge whether cold water flow is more than first flow threshold value (such as 2L/min).
If so, thening follow the steps S104；If not, thening follow the steps S111.
S104：Control water heater enters delay state, obtains delay time, and continue to execute step S105.
S105：Judge whether delay time reaches preset time (such as 2s).
If so, thening follow the steps S106；If not, thening follow the steps S104.
S106：It opens at the hot water end for controlling water temperature regulation device.
S107：Detect the leaving water temperature of the water outlet of water temperature regulation device.
S108：Judge whether leaving water temperature is less than target leaving water temperature.
If so, thening follow the steps S109；If not, thening follow the steps S110.
S109：The hot water flow for controlling the hot water end of water temperature regulation device increases, and executes step S103.
S110：It controls water temperature regulation device to stop adjusting hot water flow, and executes step S103.
S111：Exit water temperature regulation device control subprogram.
Further, according to one embodiment of present invention, after water heater powers on, the control method of water-heater system
Further include：The working condition of water heater is obtained, and controls heating unit when water heater is in upper water state or hull-borne and stops
It only works and the cold water end A for controlling water temperature regulation device is closed.
Specifically, when using water heater, water heater includes upper water state, hull-borne and normal condition, water heater
Operation principle under each working condition is as follows.
One, upper water state
In first time using water heater or after carrying out liner cleaning to water heater, there is no water in water heater, at this point,
It needs to execute water operation, to ensure to have water in water heater, prevents water heater dry combustion method after the power is turned on.Due to being set in water-heater system
It is equipped with water temperature regulation device, when judging that water heater is in upper water state, the cold water end A for controlling water temperature regulation device is closed, and
The hot water end B of control water temperature regulation device is opened completely, and control heating unit is stopped, until the operation of upper water is completed,
So as to avoid water heater from causing dry combustion method or other security risks in the heating of upper water state mistiming.
Two, hull-borne
When user needs to empty the hot water in water heater, need to execute drain operation, due to setting in water-heater system
It is equipped with water temperature regulation device, when judging that water heater is in hull-borne, the cold water end A for controlling water temperature regulation device is closed, and
The hot water end B of control water temperature regulation device is opened completely, and control heating unit is stopped, so as to improve water heater
Empty the speed of hot water.
Three, normal condition
When judging that water heater is in normal condition, controlled according to the running parameter (such as water temperature, flow) of water-heater system
The cold water end A and hot water end B of water temperature regulation device, or the hot water end B closings of water temperature regulation device are directly controlled, to avoid going out
The case where existing short time high temperature having one's hair waved is to user, ensures the water safety of user.
The water-heater system of the embodiment of the present invention when water heater is in upper water state or hull-borne by controlling as a result,
Heating unit is stopped, and the cold water end A for controlling water temperature regulation device is closed, and water heater can be ensured in installation lower water temperature
Can reduce repacking cost with normal use, without increasing additional control device after device, meanwhile, avoid water or
Dry combustion method or other safety failures caused by the heating of water heater mistake, can ensure water heater in electriferous state in person's drainage procedure
Either water or drain operation in the execution of off-position, improve product competitiveness.
Further, according to one embodiment of present invention, when water heater is in normal condition, the control of water-heater system
Method processed further includes：Detect the cold water water temperature of the water temperature and cold water pipeline in water heater；According to the water temperature in water heater, cold water water
Mild target output water temperature precalculates hot and cold water mixed proportion, and water temperature tune is controlled when water-heater system enters water exit mode
The hot water end B and cold water end A of regulating device are opened according to hot and cold water mixed proportion to adjust the hot water flow by hot water end B and lead to
The cold water flow of water end (W.E.) A is subcooled.
Specifically, water heater first obtains water temperature and cold water water temperature in water heater, and according to the water temperature, cold in water heater
Water water temperature and target output water temperature precalculate hot and cold water mixed proportion.As an example it is assumed that the water temperature in water heater is 80 DEG C,
Cold water water temperature is 20 DEG C, and target output water temperature is 40 DEG C, then the hot and cold water mixed proportion precomputed is 2:1, in other words, pass through
The ratio of the cold water flow of cold water end A and the hot water flow by hot water end B is 2:1.When water-heater system enters water exit mode
When, the cold water end A and hot water end B of water temperature regulation device are controlled according to hot and cold water mixed proportion 2:1 opens, that is to say, that if
Cold water flow by cold water end A is 2L/min, then the hot water flow that control passes through hot water end B is 1L/min, so that water outlet C
Output water temperature be within the preset range of target output water temperature.
It should be noted that the valve opening of the cold water end A and hot water end B of water temperature regulation device can be controlled respectively, to adjust
Section passes through the flow of inlet water of cold water end A and hot water end B, to adjust hot and cold water mixed proportion.Alternatively, water temperature regulation device is cold
The valve opening of water end (W.E.) A can remain unchanged, and control the valve opening of hot water end B to adjust hot and cold water mixed proportion.
According to one embodiment of present invention, the control method of water-heater system further includes：It is in and stablizes in leaving water temperature
Hot and cold water mixed proportion is adjusted according to leaving water temperature and target output water temperature when state, to control the hot water end of water temperature regulation device
B and cold water end A is opened according to the hot and cold water mixed proportion after adjustment, so that leaving water temperature is maintained at target output water temperature.
Specifically, when water-heater system enters water exit mode, cold water end A and the hot water end of water temperature regulation device are controlled
B is opened according to hot and cold water mixed proportion, detects the leaving water temperature of the water outlet C of water temperature regulation device in real time.At leaving water temperature
When stable state, hot and cold water mixed proportion is finely adjusted according to the difference of leaving water temperature and target output water temperature, works as water outlet
When temperature is less than target output water temperature, the hot water flow for controlling the hot water end B of water temperature regulation device increases；When leaving water temperature reaches
When target output water temperature, stop adjusting water temperature regulation device, and control the hot water end B and cold water end A of water temperature regulation device according to
Hot and cold water mixed proportion after adjustment is opened, so that leaving water temperature is maintained at target output water temperature.
To sum up, the control method of the water-heater system proposed according to embodiments of the present invention detects the cold water of water heater in real time
The cold water flow of pipeline, water heater delay preset time control lower water temperature dress after cold water flow is more than first flow threshold value
The hot water end set is opened, and so as to control water temperature regulation device according to the real data of water-heater system, is avoided the occurrence of in short-term
High-temperature water irons the case where user, improves the security performance of system, while system erroneous judgement can be avoided to lead to abnormal heat outputting
Water improves control accuracy.
In the description of the present invention, it is to be understood that, term "center", " longitudinal direction ", " transverse direction ", " length ", " width ",
" thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom" "inner", "outside", " up time
The orientation or positional relationship of the instructions such as needle ", " counterclockwise ", " axial direction ", " radial direction ", " circumferential direction " be orientation based on ... shown in the drawings or
Position relationship is merely for convenience of description of the present invention and simplification of the description, and does not indicate or imply the indicated device or element must
There must be specific orientation, with specific azimuth configuration and operation, therefore be not considered as limiting the invention.
In addition, term " first ", " second " are used for description purposes only, it is not understood to indicate or imply relative importance
Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicitly include at least one this feature.In the description of the present invention, the meaning of " plurality " is at least two, such as two, three
It is a etc., unless otherwise specifically defined.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " fixation " etc.
Term shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integral；Can be that machinery connects
It connects, can also be electrical connection；It can be directly connected, can also can be indirectly connected through an intermediary in two elements
The interaction relationship of the connection in portion or two elements, unless otherwise restricted clearly.For those of ordinary skill in the art
For, the specific meanings of the above terms in the present invention can be understood according to specific conditions.
In the present invention unless specifically defined or limited otherwise, fisrt feature can be with "above" or "below" second feature
It is that the first and second features are in direct contact or the first and second features pass through intermediary mediate contact.Moreover, fisrt feature exists
Second feature " on ", " top " and " above " but fisrt feature be directly above or diagonally above the second feature, 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 directly under or diagonally below the second feature, or is merely representative of fisrt feature level height and is less than second feature.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example
Point is included at least one embodiment or example of the invention.In the present specification, schematic expression of the above terms are not
It must be directed to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be in office
It can be combined in any suitable manner in one or more embodiments or example.In addition, without conflicting with each other, the skill of this field
Art personnel can tie the feature of different embodiments or examples described in this specification and different embodiments or examples
It closes and combines.
Although the embodiments of the present invention has been shown and described above, it is to be understood that above-described embodiment is example
Property, it is not considered as limiting the invention, those skilled 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 water-heater system, which is characterized in that including：
Water temperature regulation device, the water temperature regulation device have hot water end and cold water end；
Water heater, the water heater include the cold water pipeline being connected with the cold water end of the water temperature regulation device and the water
Hot water line, heating unit and the control unit being connected with heating unit that the hot water end of warm regulating device is connected, the control
Unit processed is also communicated with the water temperature regulation device；
Flow detection unit, the flow detection unit is used to detect the cold water flow of the cold water pipeline of the water heater, described
Flow detection unit is communicated with described control unit the cold water flow is sent to described control unit；
Wherein, described control unit delay preset time after the cold water flow is more than first flow threshold value controls the water
It opens at the hot water end of warm regulating device.
2. water-heater system according to claim 1, which is characterized in that described control unit is less than in the cold water flow
The hot water end that the water temperature regulation device is controlled when second flow threshold value is closed.
3. water-heater system according to claim 2, which is characterized in that the second flow threshold value is greater than or equal to described
First flow threshold value.
4. water-heater system according to claim 1, which is characterized in that further include：
Temperature detecting unit, the temperature detecting unit are used to detect the leaving water temperature of the water outlet of the water temperature regulation device,
The temperature detecting unit is communicated with described control unit the leaving water temperature is sent to described control unit, the control
The hot water flow that unit controls the hot water end of the water temperature regulation device when the leaving water temperature is less than target leaving water temperature increases
Add, until the leaving water temperature reaches the target leaving water temperature.
5. water-heater system according to claim 1, which is characterized in that the water temperature regulation device includes thermostatic valve.
6. a kind of control method of water-heater system, which is characterized in that the water-heater system includes water temperature regulation device and heat
Hydrophone, it includes being filled with the lower water temperature that the water temperature regulation device, which has hot water end, cold water end and water outlet, the water heater,
Cold water pipeline that the cold water end set is connected, the hot water line being connected with the hot water end of the water temperature regulation device and heating
Unit the described method comprises the following steps：
Detect the cold water flow of the cold water pipeline of the water heater；
Water heater delay preset time after the cold water flow is more than first flow threshold value controls the lower water temperature
It opens at the hot water end of device.
7. the control method of water-heater system according to claim 6, which is characterized in that further include：
It closes at the hot water end that the water heater controls the water temperature regulation device when the cold water flow is less than second flow threshold value
It closes.
8. the control method of water-heater system according to claim 7, which is characterized in that the second flow threshold value is more than
Or it is equal to the first flow threshold value.
9. the control method of water-heater system according to claim 6, which is characterized in that further include：
Detect the leaving water temperature of the water outlet of the water temperature regulation device；
The water heater controls the hot water end of the water temperature regulation device when the leaving water temperature is less than target leaving water temperature
Hot water flow increases, until the leaving water temperature reaches the target leaving water temperature.
10. the control method of water-heater system according to claim 6, which is characterized in that the water temperature regulation device packet
Include thermostatic valve.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710206382.7A CN108662786A (en) | 2017-03-31 | 2017-03-31 | Water-heater system and its control method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710206382.7A CN108662786A (en) | 2017-03-31 | 2017-03-31 | Water-heater system and its control method |
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| CN108662786A true CN108662786A (en) | 2018-10-16 |
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| CN201710206382.7A Pending CN108662786A (en) | 2017-03-31 | 2017-03-31 | Water-heater system and its control method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113950597A (en) * | 2019-02-01 | 2022-01-18 | 因维兰西亚有限责任公司 | Device and method for managing a hot water supply |
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Application publication date: 20181016 |