CN104797890B - Hot-water supply system - Google Patents
Hot-water supply system Download PDFInfo
- Publication number
- CN104797890B CN104797890B CN201380059919.1A CN201380059919A CN104797890B CN 104797890 B CN104797890 B CN 104797890B CN 201380059919 A CN201380059919 A CN 201380059919A CN 104797890 B CN104797890 B CN 104797890B
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- water
- storage tank
- heat
- controller
- hot water
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 388
- 230000008014 freezing Effects 0.000 claims abstract description 58
- 238000007710 freezing Methods 0.000 claims abstract description 58
- 238000005338 heat storage Methods 0.000 claims abstract description 49
- 230000008676 import Effects 0.000 claims description 12
- 239000000498 cooling water Substances 0.000 claims description 8
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 230000002265 prevention Effects 0.000 abstract 3
- 238000000034 method Methods 0.000 description 48
- 230000008569 process Effects 0.000 description 46
- 239000008399 tap water Substances 0.000 description 15
- 235000020679 tap water Nutrition 0.000 description 15
- 238000010438 heat treatment Methods 0.000 description 14
- 238000012545 processing Methods 0.000 description 12
- 239000003795 chemical substances by application Substances 0.000 description 9
- 238000013461 design Methods 0.000 description 8
- 230000002093 peripheral effect Effects 0.000 description 8
- 238000009825 accumulation Methods 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 7
- 238000011144 upstream manufacturing Methods 0.000 description 5
- 230000009471 action Effects 0.000 description 4
- 238000012544 monitoring process Methods 0.000 description 4
- 238000001514 detection method Methods 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 2
- 238000000205 computational method Methods 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 235000013399 edible fruits Nutrition 0.000 description 2
- 239000006200 vaporizer Substances 0.000 description 2
- 235000021152 breakfast Nutrition 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000019771 cognition Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000008400 supply water Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D17/00—Domestic hot-water supply systems
- F24D17/0089—Additional heating means, e.g. electric heated buffer tanks or electric continuous flow heaters, located close to the consumer, e.g. directly before the water taps in bathrooms, in domestic hot water lines
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D17/00—Domestic hot-water supply systems
- F24D17/02—Domestic hot-water supply systems using heat pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D19/00—Details
- F24D19/0095—Devices for preventing damage by freezing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D19/00—Details
- F24D19/10—Arrangement or mounting of control or safety devices
- F24D19/1006—Arrangement or mounting of control or safety devices for water heating systems
- F24D19/1051—Arrangement or mounting of control or safety devices for water heating systems for domestic hot water
- F24D19/1054—Arrangement or mounting of control or safety devices for water heating systems for domestic hot water the system uses a heat pump
-
- 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
- F24H15/00—Control of fluid heaters
- F24H15/10—Control of fluid heaters characterised by the purpose of the control
- F24H15/136—Defrosting or de-icing; Preventing freezing
-
- 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
- F24H15/00—Control of fluid heaters
- F24H15/20—Control of fluid heaters characterised by control inputs
- F24H15/254—Room temperature
-
- 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
- F24H15/00—Control of fluid heaters
- F24H15/30—Control of fluid heaters characterised by control outputs; characterised by the components to be controlled
- F24H15/335—Control of pumps, e.g. on-off control
-
- 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
- F24H15/00—Control of fluid heaters
- F24H15/30—Control of fluid heaters characterised by control outputs; characterised by the components to be controlled
- F24H15/375—Control of heat pumps
-
- 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
- F24H15/00—Control of fluid heaters
- F24H15/10—Control of fluid heaters characterised by the purpose of the control
- F24H15/174—Supplying heated water with desired temperature or desired range of temperature
-
- 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
- F24H15/00—Control of fluid heaters
- F24H15/20—Control of fluid heaters characterised by control inputs
- F24H15/212—Temperature of the water
- F24H15/219—Temperature of the water after heating
-
- 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
- F24H15/00—Control of fluid heaters
- F24H15/30—Control of fluid heaters characterised by control outputs; characterised by the components to be controlled
- F24H15/305—Control of valves
- F24H15/315—Control of valves of mixing valves
-
- 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
- F24H15/00—Control of fluid heaters
- F24H15/30—Control of fluid heaters characterised by control outputs; characterised by the components to be controlled
- F24H15/355—Control of heat-generating means in heaters
- F24H15/36—Control of heat-generating means in heaters of burners
Abstract
When the scheduled hot-water supply end time for the current day has expired and the amount of heat stored in a tank is not sufficient for the amount of heat required (the required amount of heat) to execute a freezing prevention operation until the next day's scheduled hot-water supply start time (YES in S48 in Figure 3), a controller executes a heat storage operation by operating a heat pump and a circulation pump until the required amount of heat is stored in the tank (S50). By means of this heat storage operation it is possible to store in the tank the amount of heat (hot water) required to execute the freezing prevention operation until the next day's scheduled hot-water supply start time. Subsequently, the controller executes the freezing prevention operation by circulating the hot water in the tank, without operating the heat pump, until the next day's scheduled hot-water supply start time (S54-S60).
Description
Technical field
Technology disclosed in this specification is related to a kind of hot-water supply system.
Background technology
There is one kind disclosed in Japanese invention Patent Publication No flat No. 11-63661 (hereinafter referred to as patent documentation 1)
Teat pump boiler, the Teat pump boiler has hot water reservoir, peripheral passage, heat pump, cooling-water temperature sensor and judging part, wherein,
Hot water storage tank is used to store water；Water in hot water storage tank is in peripheral passage interior circulation；Heat pump is in peripheral passage interior circulation
Water heated；Cooling-water temperature sensor is used to detect the water temperature in hot water reservoir；Judging part is used to judge by cooling-water temperature sensor
Whether the water temperature for detecting is below set point of temperature.In the Teat pump boiler, when judging part is judged as being examined by cooling-water temperature sensor
When the water temperature measured is below set point of temperature, then make heat pump operate, and make water in peripheral passage interior circulation, carry out preventing circulation logical
What the water in road freezed prevents freeze operation.
In the technology of patent documentation 1, whenever needing to carry out preventing freeze operation, it is necessary to heat pump is operated or is stopped
Operating.As a result, the operating of heat pump or the number of times that shuts down become many, so as to the overall efficiency for causing heat pump is reduced.
The content of the invention
A kind of hot-water supply system is provided in this manual, and the hot-water supply system can suppress heat pump to operate or shut down
Number of times increase, and can suitably prevent from freezing with tubular part.
After the discussion that the inventors of the present invention carry out conscientious, following judgement is made：In the list of 24 hours (a day)
Find after the living habit of observation different home in the time of position, whichever family, arrive in the supply end of last time warm water
In a period of next day earliest warm water supply starts, need the probability of warm water all smaller.
Hot-water supply system disclosed in this specification is the invention carried out based on above-mentioned cognition.Confession disclosed in this specification
Hot-water heating system has storage tank, storage tank water circulation path, heat pump, external temperature sensor, cooling-water temperature sensor and controller, its
In, storage tank is used for storage and is supplied to water of the warm water using position；Storage tank water circulation path imports the water in storage tank, and makes
The water for being imported is back in storage tank；Heater absorbs heat to heat in storage tank water circulation path from extraneous air
Water；External temperature sensor is used to detect outside air temperature；Cooling-water temperature sensor is used to detect the water temperature of each several part in storage tank.Control
Device processed is based on past practical situation, predetermined instant is started to the supplying hot water within the unit interval and terminates predetermined instant with supplying hot water
It is determined, wherein, supplying hot water starts the start time that predetermined instant is initial supplying hot water；Supplying hot water terminates predetermined instant and is later than
Supplying hot water starts predetermined instant, and the supplying hot water terminates the finish time that predetermined instant is last supplying hot water.In addition, controller is based on
The water temperature in each portion in storage tank, calculates heat of the savings in storage tank.In addition, the supplying hot water within the current one time terminates
When outside air temperature is less than set point of temperature after predetermined instant, control unit makes heat pump shut down, and makes storage tank water circulation path
Interior water circulation, carries out preventing freeze operation, also, the supplying hot water within the current one time from terminating after predetermined instant, to arrive
Supplying hot water in the next unit interval starts before predetermined instant, in order to carry out preventing freeze operation, needs in storage tank
The enough heat of storage, before enough heats are reached, controller enter to exercise heat pump operating prevent freeze to use heat storage operation.
Supplying hot water of the above-mentioned hot-water supply system within the current one time terminates after predetermined instant, during to next unit
Interior supplying hot water starts before predetermined instant, in order to carry out preventing freeze operation, needs from enough heat is stored in storage tank
Amount, before enough heats are reached, controller enter to exercise heat pump operating prevent freeze to use heat storage operation.By being prevented
Freeze to use heat storage operation, the supplying hot water that can be stored in storage tank in the next unit interval enters till starting predetermined instant
Row prevents the heat (warm water) needed for freeze operation.Therefore, the supplying hot water within the current one time terminates under predetermined instant arrives
In a period of supplying hot water in one unit interval starts predetermined instant, controller can make heat pump shut down, and make water storage
Water circulation in case, carries out preventing freeze operation.As a result, it is possible to suppress heat pump continually to operate or shut down.Therefore, it is above-mentioned
Hot-water supply system can suppress heat pump operating or the increase of the number of times that shuts down, and can suitably prevent with tubular part generation
Freeze.
Description of the drawings
Fig. 1 is the figure of the structure of the hot-water supply system 2 for schematically showing the 1st embodiment.
Fig. 2 is in the hot-water supply system 2 of the 1st embodiment, predetermined instant to be started to same day supplying hot water in same day supplying hot water
The 1st carried out in a period of terminating predetermined instant prevents the flow chart for freezing to process.
Fig. 3 is in the hot-water supply system 2 of the 1st embodiment, predetermined instant to be terminated to next day supplying hot water in same day supplying hot water
The 2nd carried out in a period of starting predetermined instant prevents the flow chart for freezing to process.
Fig. 4 is to represent that carrying out the 2nd of the 1st embodiment prevents from freezing the table of the specific example (1A) when processing.
Fig. 5 is to represent that carrying out the 2nd of the 1st embodiment prevents from freezing the table of the specific example (1B) when processing.
Fig. 6 is in the hot-water supply system 2 of the 2nd embodiment, predetermined instant to be terminated to next day supplying hot water in same day supplying hot water
The 2nd carried out in a period of starting predetermined instant prevents the flow chart for freezing to process.
Fig. 7 is to represent that carrying out the 2nd of the 2nd embodiment prevents from freezing the table of the specific example (2) when processing.
Fig. 8 is to represent that carrying out the 2nd of the 3rd embodiment prevents from freezing the table of the specific example (3) when processing.
Specific embodiment
First, the principal character of the embodiment being described below is included.In addition, technology essential factor point described below
It is not independent technology essential factor, by being used alone or carrying out various combinations technology serviceability is played, its compound mode is simultaneously
Described compound mode in claims when being not limited to propose the present invention.
(feature 1) controller can be in it have passed through the current one time supplying hot water terminate after predetermined instant, immediately
Carry out preventing from freezing to use heat storage operation.By the way that using the structure, hot-water supply system can be in it have passed through the current one time
Supplying hot water terminates after predetermined instant, and the supplying hot water being stored in the next unit interval in storage tank immediately starts to make a reservation for
Carry out preventing the heat (warm water) needed for freeze operation till moment.
(feature 2)
When the heat in storage tank is less than the minimum regulatory heat needed for carrying out preventing freeze operation, controller can enter
Row prevents from freezing to use heat storage operation.By using the structure, even if the supplying hot water for example within the current one time terminates to make a reservation for
After moment, the warm water in storage tank is used for into supplying hot water, in the case of as a result causing the shortage of heat in storage tank, supplying hot water
System can also be in storage tank the time point of shortage of heat carry out preventing from freezing to use heat storage operation.Therefore, no matter storage tank
How is the utilization obstacle of interior warm water, and hot-water supply system may ensure that the supplying hot water in the next unit interval starts to make a reservation for
Carry out preventing the heat needed for freeze operation till moment.
(the 1st embodiment)
As shown in figure 1, the hot-water supply system 2 involved by the present embodiment have storage tank 10, storage tank water circulation path 20,
Tap water imports path 30, supply passageway 40, heat pump 50, burner heater 60 and controller 100.
Heat pump 50 is that heat is absorbed from extraneous air, the heat heated to the water in storage tank water circulation path 20
Source.Although being not expressly shown in figure, heat pump 50 have heating agent peripheral passage, vaporizer, compressor, heat exchanger and
Expansion valve, wherein, heating agent (Chlorofluorocarbons (CFCs) substitute, such as R410A etc.) is in heating agent peripheral passage interior circulation；Vaporizer makes outside sky
Heat exchange is carried out between gas and heating agent；Compressor is compressed to heating agent, makes heating agent be in high-temperature high-pressure state；Heat exchanger makes
Water in storage tank water circulation path 20 and heat exchange is carried out between the heating agent of high-temperature high-pressure state；Expansion valve makes heat exchange
Heating agent after end reduces pressure and is in low temperature.In addition, heat pump 50 has the outside gas for detecting outside air temperature
Temperature sensor 52.
The warm water that storage tank 10 is used for after storage is heated by heat pump 50.Storage tank 10 is sealed container, the storage tank 10
Outside by heat-barrier material cover.Continue water storage in storage tank 10, until water is expired in storage tank 10.In the present embodiment, store up
The capacity of water tank 10 is 100 liters.Critesistor 11,12,13,14,15 is installed on storage tank 10, the critesistor 11,12,
13rd, 14,15 separate predetermined distance configuration in the short transverse of storage tank 10.Each critesistor 11,12,13,14,15 is used for
Detect the water temperature of its installed position.For example, each critesistor 11,12,13,14,15 is detected respectively by the top of storage tank 10
Count 0 liter, 20 liters, 40 liters, 60 liters, the water temperature at 80 liters of positions.
The upstream end of storage tank water circulation path 20 is connected with the bottom of storage tank 10, storage tank water circulation path 20
Downstream is connected with the top of storage tank 10.Circulating pump 22 is installed on storage tank water circulation path 20.The circulating pump 22
Water in storage tank water circulation path 20 is delivered to into downstream side by upstream side.In addition, storage tank water circulation path 20 is logical
Cross the heat exchanger (omitting diagram) of heat pump 50.Therefore, when making heat pump 50 operate, the water quilt in storage tank water circulation path 20
The heat exchanger heating of heat pump 50.Therefore, when circulating pump 22 is made and heat pump 50 operates, then the water of the bottom of storage tank 10 is by heat pump
50 heating, and the top of storage tank 10 is back to by the water that heat pump 50 is heated.That is, storage tank water circulation path 20 is to water storage
The water circulation path of the accumulation of heat of case 10.In addition, the upstream side in the close heat pump 50 of storage tank water circulation path 20 is provided with heat
Quick resistance 24.The critesistor 24 is used for the temperature by the water before heat pump 50 that detection is exported by the bottom of storage tank 10
Degree.In other words, critesistor 24 is used for the water temperature of 10 liters of positions that detection is counted by the top of storage tank 10.
Tap water imports the upstream end of path 30 and is connected with tap water supply source 31.Import in tap water and pacify on path 30
Equipped with critesistor 32.The critesistor 32 is used to detect the temperature of tap water.Tap water imports the downstream side point of path 30
Branch off and import the importing path 30b of path 30a and the 2nd for the 1st.The downstream of the 1st importing path 30a is connected with the bottom of storage tank 10
Connect.The downstream of the 2nd importing path 30b is connected with the mid portion of supply passageway described later 40.Path 30b is imported the 2nd
The coupling part of downstream and supply passageway 40 be provided with mixing valve 42.The mixing valve 42 is used for adjustment the 2nd and imports path 30b
Interior water is mixed into the amount in the warm water in supply passageway 40.
The upstream end of supply passageway 40 is connected with the top of storage tank 10.As described above, the pars intermedia of supply passageway 40
Divide the 2nd importing path 30b for importing path 30 with tap water to be connected, both coupling parts are provided with mixing valve 42.
The ratio connecting portion (supply passageway 40 with the 2nd importing connecting portions that are connected of path 30b) of supply passageway 40 side downstream
Burner heater 60 is installed on position.In addition, in supply passageway 40 than burner heater 60 near downstream one
Critesistor 44 is installed on the position of side.The critesistor 44 is used for the temperature of the supplied warm water of detection.By storage tank
The temperature (that is, the temperature for being detected by critesistor 44) of 10 warm water being supplied in supply passageway 40 is less than supplying hot water setting temperature
When spending, burner heater 60 is heated to the water in supply passageway 40, so that the warm water detected by critesistor 44
Temperature it is consistent with supplying hot water design temperature.The downstream of supply passageway 40 utilizes position (such as kitchen, bathtub etc.) with warm water
It is connected.
Controller 100 is electrically connected with each structural element, and the controller 100 is used to control the dynamic of each structural element
Make.
Next, the action of the hot-water supply system 2 of explanation the present embodiment.Hot-water supply system 2 can carry out heat storage operation, supply
Hot water operate and prevent freeze operation these three operation.Each operation is illustrated below.
(heat storage operation)
Heat storage operation is that the operation of the water in storage tank 10 is heated using the heat generated by heat pump 50.Work as controller
100 when sending the instruction for carrying out heat storage operation, and heat pump 50 starts running, and circulating pump 22 starts to rotate.When circulating pump 22 is opened
When beginning to rotate, the water in storage tank 10 starts in the interior circulation of storage tank water circulation path 20.That is, the water of the bottom of storage tank 10 is led
Enter in storage tank water circulation path 20, when heat exchanger of the water in importing storage tank water circulation path 20 by heat pump 50,
Water is by the heat from heating agent, and the water after heating is back to the top of storage tank 10.Thus, it is possible to temperature is higher
Water be stored in storage tank 10.Thus, high temperature water layer is formed on the top of storage tank 10, forms low in the bottom of storage tank 10
Warm water layer.
(supplying hot water operation)
Supplying hot water operation is that the water in storage tank 10 is supplied to into operation of the warm water using position.Carrying out above-mentioned accumulation of heat behaviour
When making, supplying hot water operation can be simultaneously carried out.When warm water is opened using the hot water tap of position, due to from tap water
The effect of the hydraulic pressure of supply source 31, controller 100 makes tap water import path 30 (the 1st imports path 30a) inflow by tap water
To the bottom of storage tank 10.Meanwhile, the warm water on the top of storage tank 10 is supplied to warm water and utilizes position via supply passageway 40.
When temperature (that is, the temperature for being detected by critesistor 44 of the water being supplied in supply passageway 40 by storage tank 10
Degree) higher than supplying hot water design temperature when, mixing valve 42 is opened by controller 100, make tap water by the 2nd import path 30b
Import in supply passageway 40.Therefore, supplied by storage tank 10 water for supplying and the tap water that path 30b supplies are imported by the 2nd
Mixing in path 40.Controller 100 adjusting the aperture of mixing valve 42 so that be supplied to warm water using the water of position temperature with
Supplying hot water design temperature is consistent.In addition, when the temperature of the water that supply passageway 40 is supplied to by storage tank 10 sets less than supplying hot water
During temperature, controller 100 makes burner heater 60 operate.So as to make the burned device of water of the flowing in supply passageway 40
Heater 60 is heated.The heat of the output of the control burner of controller 100 heater 60, so that being supplied to warm water utilizes position
Water temperature it is consistent with supplying hot water design temperature.
In addition, in the present embodiment, due to the difference of time period, it sometimes appear that following situation：When warm water utilizes position
When the hot water tap at place is opened, the aperture of mixing valve 42 is adjusted by controller 100, so that the water in storage tank 10 is not
It is supplied in supply passageway 40, only will be supplied in supply passageway 40 by the tap water of the 2nd importing path 30b supplies, detailed feelings
Condition can be illustrated later.In this case, controller 100 makes burner heater 60 operate to control burner
The heat that heater 60 is exported, so that the temperature for being supplied to warm water using the water of position is consistent with supplying hot water design temperature.
(preventing freeze operation)
Prevent freeze operation from being to prevent from resulting in storage tank water and following because the water in storage tank water circulation path 20 freezes
There is the operation of rupture in the pipeline of ring path 20 (especially by the part of the heat exchanger of heat pump 50).When controller 100
When going out to carry out preventing the instruction of freeze operation, circulating pump 22 starts running, and the water in storage tank 10 starts in storage tank water
The interior circulation of peripheral passage 20.Shown as is subsequently explained, in the present embodiment, in the case of regulation, controller 100 makes circulation
While pump 22 and heat pump 50 operate, carry out preventing freeze operation (step S22 in Fig. 2).In addition, in the present embodiment, by
In the difference of time period, what controller 100 was carried out prevents the content for freezing to process different (with reference to Fig. 2, Fig. 3), adjoint
In this, prevent the content of freeze operation also different.
(process that controller 100 is carried out in per 24 hours)
In the present embodiment, controller 100 is corresponding to the family's (hereinafter referred to as " particular home for being provided with hot-water supply system 2
Front yard ") living habit in a day is handled as follows.In the present embodiment, controller 100 will be with 2:00 is the 24 of starting point
Hour is provided for determining the unit interval of one day.
Below, the example of the living habit of particular home is illustrated.In specific family, daily 7:00 is left
Right beginning supplying hot water.Initially the hot water of supply is for example for preparing breakfast or wash one's face.Then, in the morning 11:30 or so, for standard
Standby lunch, starts second supplying hot water.Furthermore, in the afternoon 19:00 or so, carry out for the supplying hot water of hot-water flooding in bathtub behaviour
Make.Then, at night 22:00 or so, the last time supplying hot water in starting a day.The hot water of last time supply is used to brush teeth
Deng.
In the present embodiment, in specific family, whenever supplying hot water operation is carried out, controller 100 all can storage table
Show supplying hot water start time and represent the time information of supplying hot water finish time.Controller 100 stored particular home in the past seven
Time information in it.In addition, time information of the controller 100 before 24 hours will remove eight days, stores previous again
It time information.
Then, time information of the controller 100 according to particular home within past seven days is come initial in determining seven days in the past
The earliest moment in the start time of supplying hot water.In specific family, after it have passed through the moment, heat supply is proceeded by
The probability of water operation is higher.Below, the moment is referred to as into " supplying hot water starts predetermined instant ".
In addition, time information of the controller 100 according to particular home within past seven days is determining in past seven days most
Moment the latest in the finish time of supplying hot water afterwards.In specific family, after it have passed through the moment, until next day supplies
Hot water start predetermined instant be just initially supplied hot water probability it is higher.Below, by the moment, referred to as " supplying hot water terminates pre- timing
Carve ".
(the preventing of being carried out of controller 100 freezes to process)
Then, preventing of carrying out to the controller 100 of the hot-water supply system 2 by the present embodiment is freezed process and is illustrated.
As described above, in the present embodiment, due to the difference of time period, what controller 100 was carried out prevents from freezing the content of process
Different (with reference to Fig. 2, Fig. 3).Below, it is different to two kinds to prevent from freezing process illustrating.
(the 1st prevents from freezing to process)
Fig. 2 is the 1st to prevent from freezing the flow chart that processes by what controller 100 was carried out.1st to prevent from freezing process be on the same day
Supplying hot water starts the process carried out in a period of predetermined instant terminates predetermined instant to same day supplying hot water.Therefore, at current time
When supplying hot water starts predetermined instant, controller 100 proceeds by the 1st and prevents from freezing to process.
In step S10, S12, the temperature (temperature of the bottom of storage tank 10 that controller 100 pairs is detected by critesistor 24
Degree) whether 10 DEG C are less than, and whether the temperature (that is, outside air temperature) that external temperature sensor 52 is detected is sentenced less than 3 DEG C
It is disconnected.When the temperature detected by critesistor 24 is less than 10 DEG C, and 3 DEG C are less than by the temperature that external temperature sensor 52 is detected
When, judged result of the controller 100 in step S10 and step S12 is "Yes", afterwards into step S14.
In step S14, controller 100 makes circulating pump 22 operate.So as to the water in storage tank 10 starts in storage tank water
The interior circulation of peripheral passage 20.Thus, the distribution of water temperature in storage tank 10 and in storage tank water circulation path 20 reaches uniformly.Control
After device 100 makes circulating pump 22 operate in step S14, into step S16, S18, S20.
In step s 16, controller 100 monitors whether state of the temperature detected by critesistor 24 higher than 13 DEG C holds
3 minutes are continued.Meanwhile, in step S18, whether controller 100 monitors the temperature detected by external temperature sensor 52 high
In 6 DEG C.In addition, while, in step S20, controller 100 monitors shape of the temperature detected by critesistor 24 less than 8 DEG C
Whether state continue for 30 minutes.
In step S14, operated by making circulating pump 22, so that in storage tank 10 and in storage tank water circulation path 20
Distribution of water temperature reach uniformly.As a result, the water temperature in storage tank 10 and storage tank water circulation path 20 is sometimes over 13 DEG C.Such as
State of the water temperature in fruit storage tank 10 and storage tank water circulation path 20 higher than 13 DEG C continue for certain hour (more than 3 minutes)
If, form the pipeline of storage tank water circulation path 20 causes the probability for rupturing less because freezing.In this case, control
The judged result in step s 16 of device processed 100 is "Yes", afterwards, into step S28, makes circulating pump 22 shut down.This
In the case of, controller 100 returns again to step S10 and step S12, is monitored operation.
In addition, in a period of making circulating pump 22 operate, outside air temperature is sometimes over 6 DEG C.In this case, formed
The pipeline of storage tank water circulation path 20 causes the probability for rupturing also less because freezing.In this case, controller 100
Judged result in step S18 is "Yes", afterwards into step S28, makes circulating pump 22 shut down.In this case,
Controller 100 also returns again to step S10 and step S12, is monitored operation.
In addition, in step S14, even if making storage tank 10 interior and storage tank water circulation by making the operating of circulating pump 22
In the case of water circulation in path 20, the temperature detected by critesistor 24 sometimes also can be less than 8 DEG C.If critesistor
State of 24 temperature for detecting less than 8 DEG C is not eliminated and continue for if certain hour (more than 30 minutes), forms storage
The pipeline of water tank water circulation path 20 may cause rupture because freezing.In this case, controller 100 is in step S20
In judged result be "Yes", afterwards into step S22.
In step S22, controller 100 further makes heat pump 50 operate.So as to the stream in storage tank water circulation path 20
Dynamic water is heated by heat pump 50, and is back to the top of storage tank 10 by the water that heat pump 50 is heated.So as to, in storage tank 10 and
The temperature of the water of the interior circulation of storage tank water circulation path 20 gradually rises.Controller 100 makes heat pump 50 operate in step S22,
Step S24 is entered afterwards.
In step s 24, controller 100 monitors whether state of the temperature detected by critesistor 24 higher than 15 DEG C holds
5 minutes are continued.As described above, by the operating of circulating pump 22 and heat pump 50, making in storage tank 10 and storage tank water circulation being logical
The temperature of the water of the interior circulation of road 20 is raised.If the temperature detected by critesistor 24 rises above 15 DEG C of temperature, and
The state continue for if certain hour (more than 5 minutes), then the pipeline for forming storage tank water circulation path 20 is led because freezing
Cause the probability of rupture less.In this case, the judged result in step s 24 of controller 100 is "Yes", is entered afterwards
Step S26, makes heat pump 50 shut down with circulating pump 22.At the end of step S26, controller 100 returns again to process
Step S10 and step S12, are monitored operation.
Controller 100 starts in a period of predetermined instant terminates predetermined instant to supplying hot water, to enter repeatedly in same day supplying hot water
The various process of above-mentioned step S10～step S28 of row.
(the 2nd prevents from freezing to process)
Fig. 3 is the 2nd to prevent from freezing the flow chart that processes by what controller 100 was carried out.2nd to prevent from freezing process be on the same day
Supplying hot water terminates (that is, to carry out supplying hot water operation probability less during predetermined instant starts predetermined instant to next day supplying hot water
Time period) in the process that carries out.When predetermined instant is terminated through supplying hot water at current time, controller 100 proceeds by the 2nd
Prevent from freezing to process.
In step S40, step S42, the temperature that controller 100 pairs is detected by critesistor 24 whether less than 3 DEG C, and
Whether the temperature detected by external temperature sensor 52 is judged less than 3 DEG C.When the temperature detected by critesistor 24
Less than 3 DEG C, and when being less than 3 DEG C by the temperature that external temperature sensor 52 is detected, controller 100 is in step S40 and step S42
In judged result be "Yes", afterwards into step S44.
In step S44, controller 100 is based on each temperature detected by critesistor 11～15,24, when calculating current
Amount of stored heat (hereinafter referred to as " storage tank amount of stored heat ") in the storage tank 10 at quarter.Specifically, controller 100 utilizes following calculation
Formula 1, calculates the amount of stored heat of storage tank.
(formula 1) storage tank amount of stored heat [kilocalorie]=(temperature detected by critesistor 11+detected by critesistor 12
The temperature for going out)/2 × 20 [liters]+(temperature detected by critesistor 12+detected by critesistor 13 temperature)/2 × 20
[liter]+(temperature detected by critesistor 13+detected by critesistor 14 temperature)/2 × 20 [liters]+(by temperature-sensitive electricity
The temperature of the temperature+detected by critesistor 15 that resistance 14 is detected)/2 × 20 [liters]+(critesistor 15+ critesistor 24)/
2 × 20 [liter] -300 [kilocalorie]
What 300 [kilocalories] in above-mentioned formula 1 were represented is the minimum amount of stored heat of storage tank 10.That is, 300 [kilocalories] represent by
Each temperature that critesistor 11～15,24 is detected is the amount of stored heat (3 DEG C × 100 liters) when 3 DEG C.In formula 1, by from
Minimum amount of stored heat 300 [kilocalorie] is deducted in total amount of stored heat of storage tank 10, storage tank amount of stored heat is calculated, the storage tank amount of stored heat is
Actual amount of stored heat in storage tank 10.
Then, in step S46, controller 100 calculates and terminates predetermined instant in same day supplying hot water and open to next day supplying hot water
Proceed to prevent the heat (hereinafter referred to as " required heat ") needed for freeze operation in a period of beginning predetermined instant.It is concrete and
Speech, in step S46, controller 100 is by making the heat for preventing freeze operation from being released for often carrying out one hour set in advance
Amount (that is, thermal discharge hourly) and same day supplying hot water terminate the time that predetermined instant starts between predetermined instant to next day hot water
It is multiplied, required heat can be calculated.
In addition, when the process of step S46 is carried out (same day supplying hot water terminates predetermined instant), due to without through one
Its time is (that is, not through the moment (2 of unit interval conversion:00)), thus " the next day heat supply on denotation cannot be calculated
Water starts predetermined instant ".In the present embodiment, in step S46, when carrying out the benchmark of supplying hot water operation as controller 100
" next day supplying hot water starts predetermined instant " carved refer to next day with " same day supplying hot water starts predetermined instant (passing through) "
The identical moment.Below, " next day supplying hot water starts predetermined instant " in this specification be also referred to as next day with " same day heat supply
Water starts predetermined instant (passing through) " the identical moment.
Then, in step S48, controller 100 judges whether the amount of stored heat calculated in step S44 is less than in step
The required heat calculated in S46.When storage tank amount of stored heat is less than required heat, judgement knot of the controller 100 in step S48
Fruit is "Yes", afterwards into step S50.In addition, when storage tank amount of stored heat is more than required heat, controller 100 is in step
Judged result in S48 is "No", the process of step S50～S54 is omitted afterwards, into step S58.
In step s 50, controller 100 makes heat pump 50 and circulating pump 22 operate, and proceeds by heat storage operation.So as to, by
The higher water of the temperature that heated by heat pump 50 is stored in storage tank 10.Controller 100 starts in step s 50 heat storage operation,
Step S52 is entered afterwards.
In step S52, whether the monitoring of controller 100 storage tank amount of stored heat reaches more than required heat.As described above, logical
Cross and proceed by step s 50 heat storage operation, being capable of the gradually higher water of storage temperature in storage tank 10.So as to, when by
When each temperature that critesistor 11～15,24 is detected rises, storage tank amount of stored heat also can rise.As a result, when storage tank accumulation of heat
When amount reaches more than required heat, judged result of the controller 100 in step S52 is "Yes", afterwards into step S54.Separately
Outward, in step S52, controller 100 calculates the amount of stored heat of storage tank every the time of regulation.
In step S54, controller 100 makes heat pump 50 shut down, so as to terminate heat storage operation.In step S54, control
Device processed 100 makes circulating pump 22 remain in operation.That is, in step S54, controller 100 terminates heat storage operation, and proceeds by anti-
Only freeze operation.When controller 100 makes circulating pump 22 operate in step S54, water is in storage tank 10 and storage tank water is followed
The interior circulation of ring path 20.As described above, can be in the heat more than required heat of storage in storage tank 10.Therefore, it is possible to make
In storage tank and the water of the interior circulation of storage tank water circulation path 20 keeps certain temperature, the temperature to be prevented from forming storage tank
The pipeline of water circulation path 20 produces rupture because freezing.As a result, it is possible to prevent the pipeline of storage tank water circulation path 20 because freezing
Tie and cause rupture.
In step S58, controller 100 makes circulating pump 22 operate, and carries out preventing freeze operation.In above-mentioned steps S48
In the case that judged result is "No", when the process of step S58 is carried out, when circulating pump 22 does not operate, controller
100 make circulating pump 22 operate in step S58, and proceeding by prevents freeze operation.In addition, when in the process for carrying out step S58
When, circulating pump 22 has begun to operating, and when carrying out preventing freeze operation, controller 100 makes circulating pump 22 in step S58
Remain in operation.After step S58 terminates, into step S60.
Then, in step S60, whether the monitoring current time of controller 100 reaches supplying hot water starts predetermined instant (in step
As " next day supplying hot water starts predetermined instant " of reference instant in rapid S46).That is, controller 100 makes circulating pump 22 continue to transport
Turn, and proceed to prevent freeze operation, until next day supplying hot water starts predetermined instant.Start through supplying hot water at current time
During predetermined instant, judged result of the controller 100 in step S60 is "Yes", and the 2nd is terminated afterwards prevents from freezing to process (Fig. 3).
In this case, controller 100 makes circulating pump 22 shut down.
In addition, in the present embodiment, carry out the 2nd prevent from freezing to process during, when warm water is using the hot water of position
When faucet is opened (when there is the requirement of supply hot water), controller 100 adjusts the aperture of mixing valve 42, so that storage tank 10
Interior water is not supplied in supply passageway 40, only will be supplied to supply passageway 40 by the tap water of the 2nd importing path 30b supplies
It is interior.In this case, controller 100 makes burner heater 60 operate, and it is defeated to control the institute of burner heater 60
The heat for going out, so that the temperature for being supplied to warm water using the water of position is consistent with supplying hot water design temperature.Therefore, in the present embodiment
In, though perform the 2nd prevent from freezing processing during while carry out supplying hot water operation, due to the warm water in storage tank 10 not
Warm water can be supplied to and utilize position, thus storage tank amount of stored heat also will not be reduced because of supplying hot water.Therefore, in the present embodiment,
Carry out the 2nd prevent from freezing processing during, will not occur to lead to not be prevented because of the deficiency of storage tank amount of stored heat
The situation of freeze operation.
Then, with reference to Fig. 4 and Fig. 5, when illustrating that the 2nd is carried out in the hot-water supply system 2 of the present embodiment prevents from freezing to process
Specific example.In the example of Fig. 4 and Fig. 5, the same day supplying hot water of particular home terminates predetermined instant for 22:00, next day supplies
Hot water starts predetermined instant for 7:00.Same day supplying hot water terminate predetermined instant to next day supplying hot water start between predetermined instant when
Between be 9 hours.In addition, storage tank 10 and the thermal discharge hourly of storage tank water circulation path 20 are 200 kilocalories.
(specific example 1A：Fig. 4)
Specific example 1A is illustrated with reference to Fig. 4.Terminate predetermined instant 22 when current time reaches supplying hot water:When 00, controller
100 proceed by the 2nd prevents from freezing to process (with reference to Fig. 3).In this example embodiment, 22：The storage tank amount of stored heat calculated when 00 is
4200 kilocalories, it is necessary to which heat is 1800 kilocalories.The computational methods of storage tank amount of stored heat and required heat are as described above.Therefore, exist
In the example of Fig. 4,22:When 00, the heat corresponding with required heat is stored in storage tank 100.Thus, in the example
In, controller 100 is 22：Heat storage operation will not be carried out when 00 (judged result of step S48 in Fig. 3 is "No").In the example
In son, afterwards, controller 100 makes circulating pump 22 operate, and carries out preventing freeze operation, until next day supplying hot water starts pre- timing
Carve 7:00.When carrying out preventing freeze operation, heat pump 50 will not operate.As a result, in next day 7:When 00, storage tank amount of stored heat can subtract
As little as 2400 kilocalories.
(specific example 1B：Fig. 5)
Specific example 1B is illustrated with reference to Fig. 5.In this example embodiment, 22:The storage tank amount of stored heat calculated when 00 is 1,400,000
Card, the storage tank amount of stored heat is less than required heat (1800 kilocalories).I.e., in the example as shown in fig. 5,22:Storage tank when 00
Without the heat that storage is corresponding with required heat in 10.Therefore, in this example embodiment, controller 100 is 22:Accumulation of heat is carried out when 00
Operation (judged result in step S48 in Fig. 3 is "Yes", step S50).Controller 100 proceeds heat storage operation to 22:
05 result is that storage tank amount of stored heat is increased to 2200 kilocalories, more than must heat (judged result of step S52 in Fig. 3 is
"Yes").Therefore, controller 100 stops heat storage operation (step S54 in Fig. 3).In this example embodiment, afterwards, controller 100 makes
Circulating pump 22 operates, and makes the water circulation in storage tank 10 and in storage tank water circulation path 20, carries out preventing freeze operation, directly
Start predetermined instant 7 to next day supplying hot water:00.As a result, in next day 7:Storage tank amount of stored heat is reduced to 400 kilocalories when 00.
Structure and the action of the hot-water supply system 2 of the present embodiment is described above.As described above, the supplying hot water of the present embodiment
System 2 as shown in step S48 in Fig. 3～S50, when through the same day, supplying hot water terminates predetermined instant, storage tank accumulation of heat
When amount is less than required heat, make heat pump 50 and circulating pump 22 operate, and carry out heat storage operation, until the storage foot in storage tank 10
Enough heats.By carrying out the heat storage operation, can be stored in the storage tank 10 till next day supplying hot water starts predetermined instant
The heat (warm water) prevented needed for freeze operation for carrying out.Therefore, afterwards, the hot-water supply system 2 of the present embodiment can make heat pump
Shut down, and make the Warm water circulation in storage tank, carry out preventing freeze operation, until next day supplying hot water starts predetermined instant.
As a result, the hot-water supply system 2 of the present embodiment can terminate predetermined instant and start pre- timing to next day supplying hot water in same day supplying hot water
In a period of quarter, heat pump 50 is suppressed frequently to operate or shut down.Therefore, the hot-water supply system 2 of the present embodiment can suppress
The operating of heat pump 50 or the increase of the number of times that shuts down, and can suitably prevent the pipe to form storage tank water circulation path 20
Freeze on road.
Below, the corresponding relation of the present embodiment and the content of claim is illustrated.Critesistor 11～15,24 is " water temperature
One example of sensor ".In addition, same day supplying hot water terminates predetermined instant and starting predetermined instant with next day supplying hot water and being respectively
" supplying hot water in the current one time terminates predetermined instant " and " supplying hot water in the next unit interval starts predetermined instant "
An example.In addition, in figure 3 the step of S50 in the heat storage operation that carries out be one of " preventing from freezing to use heat storage operation "
Example.
(the 2nd embodiment)
Then, with reference to Fig. 6 and Fig. 7, centered on the difference of the 2nd embodiment and the 1st embodiment, to the 2nd embodiment
Hot-water supply system 2 is illustrated.The basic structure of the hot-water supply system 2 of the present embodiment and the hot-water supply system 2 of the 1st embodiment
Basic structure is identical.But, in the present embodiment, the 2nd carried out by controller 100 prevents the content for freezing to process real with the 1st
Apply the 2nd content for preventing from freezing processing carried out by controller 100 in example different.In the present embodiment, prevent from freezing place the 2nd
In reason, after it have passed through same day supplying hot water and terminate predetermined instant, storage tank amount of stored heat is less than and carries out preventing needed for freeze operation
Minimum, i.e. defined threshold when, corresponding heat storage operation is carried out, so that storage tank amount of stored heat reaches defined threshold, this point
It is different from the 1st embodiment.
Fig. 6 is the flow chart that the 2nd time of the present embodiment prevents from freezing to process.In the present embodiment, pass through at current time
When supplying hot water terminates predetermined instant, controller 100 proceeds by the 2nd and prevents from freezing to process.In the process and Fig. 3 of S70, S72
The process of S40, S42 is identical.In step S74, controller 100 calculates storage tank amount of stored heat.The calculating side of storage tank amount of stored heat
Method is identical with the computational methods using above-mentioned formula 1.
Then, in step S76, whether controller 100 judges storage tank amount of stored heat less than threshold value Q for specifying.Here,
In the present embodiment, it is stipulated that threshold value Q be prespecified often to carry out 1 hour preventing the thermal discharge of freeze operation (per hour
Thermal discharge) numerical value (such as 200 kilocalories).That is, when storage tank heat is less than threshold value Q, then it represents that do not have in storage tank 10
Storage at least carry out 1 hour prevent freeze process needed for heat.In this case, controller 100 is in step S76
Judged result is "Yes", afterwards into step S78.In addition, when the numerical value of storage tank amount of stored heat is in more than defined threshold Q, control
Judged result of the device processed 100 in step S76 is "No", the process of step S78～S84 is omitted afterwards, into step S88.
In step S78, controller 100 calculates same day supplying hot water to be terminated predetermined instant and starts pre- timing to next day supplying hot water
Required heat in a period of quarter.Then, in step S80, controller 100 makes heat pump 50 and circulating pump 22 operate, start into
Row heat storage operation.So as to the higher water of the temperature heated by heat pump 50 is stored in storage tank 10.Controller 100 is in step
Heat storage operation is proceeded by S80, afterwards into step S82.
In step S82, whether the monitoring of controller 100 storage tank amount of stored heat reaches more than required heat.As described above, logical
Cross carries out heat storage operation in step S80, can in storage tank 10 the higher water of storage temperature so that storage tank amount of stored heat
Raise.As a result, when storage tank amount of stored heat reaches more than required heat, judged result of the controller 100 in step S28 is
"Yes", afterwards into step S84.In addition, in step S82, controller 100 calculates at intervals of set time storage tank amount of stored heat.
In step S84, controller 100 makes heat pump 50 shut down, and terminates heat storage operation.In step S84, controller
100 make circulating pump 22 remain in operation.I.e., in step 84, controller 100 terminate heat storage operation, and proceed by prevent freeze
Knot operation.
In step S88, controller 100 makes circulating pump 22 operate, and carries out preventing freeze operation.In above-mentioned step S76
Judged result be "No" in the case of, when circulating pump 22 does not operate in step S88, controller 100 makes in step S88
Circulating pump 22 operates, and proceeding by prevents freeze operation.In addition, working as the circulating pump 22 in step S88 has begun to operating, carry out
When preventing freeze operation, controller 100 makes circulating pump 22 remain in operation in step S88.After step S88 terminates, enter
Step S90.
Then, in step S90, controller 100 judge current time whether reach supplying hot water start predetermined instant (on
The next day supplying hot water stated starts predetermined instant).When current time starts predetermined instant earlier than supplying hot water, controller 100 is in step
Judged result in S90 is "No", and step S74 is back to afterwards, and repeats the process of step S74～S90.
In addition, when the process of step S74～S90 is repeated, controller 100 is the step of afterwards twice in S76
Judged result is "Yes", and the moment that the process of step S78 is carried out afterwards is later than supplying hot water and terminates predetermined instant.Therefore, this
In the case of the step of S78 in, controller 100 is calculated in a period of moment to the next day supplying hot water of step S78 starts predetermined instant
Proceed to prevent the heat needed for freeze operation, and using the required heat as required heat.Specifically, controller
100 by make moment to the next day supplying hot water of pre-set thermal discharge hourly and step S78 start predetermined instant it
Between time be multiplied, required heat can be calculated.Equally, in following step S82, the monitoring storage tank of controller 100
It is more than the required heat whether amount of stored heat calculates in above-mentioned steps S78.
In addition, when current time is through supplying hot water predetermined instant, judged result of the controller 100 in step S90 is
"Yes", the 2nd is terminated afterwards prevents from freezing to process (Fig. 6).In this case, controller 100 makes circulating pump 22 shut down.
In addition, in the present embodiment, carry out the 2nd prevent from freezing to process during, when warm water is using the hot water of position
Identical with the 1st embodiment when faucet is opened (when having water requirements), controller 100 adjusts the aperture of mixing valve 42, so that
Water in storage tank 10 is not supplied in supply passageway 40, only will be supplied to supply by the tap water of the 2nd importing path 30b supplies
In path 40.In this case, controller 100 makes burner heater 60 operate, and controls burner heater
60 heats for being exported, so that the water temperature for being supplied to warm water using position is consistent with supplying hot water design temperature.
(specific example 2：Fig. 7)
Then, the 2nd is carried out in the hot-water supply system 2 that the present embodiment is illustrated with reference to Fig. 7 prevents from freezing concrete example when processing
Son.Same day supplying hot water in the example of Fig. 7 terminates predetermined instant (22:00), next day supplying hot water starts predetermined instant (7:00) it is, every
Each conditions such as the thermal discharge (200 kilocalories) of hour are identical with the example of Fig. 4, Fig. 5.
In this example embodiment, 22:The storage tank amount of stored heat calculated when 00 is 400 kilocalories, and the storage tank amount of stored heat is less than must
Calorific requirement (1800 kilocalories).But, 22:Storage tank amount of stored heat when 00 is more than threshold value Q (200 kilocalories) (step in figure 6
Judged result in rapid S76 is "No").In this example embodiment, threshold value Q is defined as the numerical value (200,000 of thermal discharge hourly
Card).Therefore, at this moment controller 100 waits will not carry out heat storage operation, but make circulating pump 22 operate, make in storage tank 10 and
Water circulation in storage tank water circulation path 20, carries out preventing freeze operation (step S88 in Fig. 6).
Afterwards, 0:The storage tank amount of stored heat calculated when 00 is 0 kilocalorie, and the storage tank amount of stored heat is less than threshold value Q (in Fig. 6
The step of S76 judged result be "Yes").That is, 0:When 00, in storage tank 10 without storage with carry out one hour prevent freeze
Knot processes the corresponding heat of required minimum heat.Therefore, controller 100 calculates 0:00 to next day supplying hot water starts pre- timing
Carve (7:00) carry out preventing the heat needed for freeze operation in during, and using the required heat as must heat (in Fig. 6
The step of S78).In this case, it is necessary to heat is 1400 kilocalories (200 kilocalories × 7).Then, controller 100 is proceeded by
Heat storage operation (step S80 in Fig. 6).Controller 100 carries out heat storage operation to 0:30 result is that storage tank amount of stored heat is raised
To 1300 kilocalories, (judged result of step S82 in Fig. 6 is "Yes") identical with required heat.In this case, controller
100 make heat pump 50 shut down, and terminate heat storage operation, and make circulating pump 22 remain in operation, and proceeding by prevents freeze operation
(step 84 in Fig. 6).
Afterwards, controller 100 makes circulating pump 22 remain in operation, so that in storage tank 10 and in storage tank water circulation path 20
Water circulation, carry out preventing freeze operation, until next day supplying hot water terminates predetermined instant 7:00.As a result, 7:Storage tank when 00
Amount of stored heat just can be reduced to 0 kilocalorie.
Structure and the action of the hot-water supply system 2 of the present embodiment is described above.As described above, the supplying hot water of the present embodiment
System 2 as shown in step S76 in Fig. 6～S82, after it have passed through same day supplying hot water and terminate predetermined instant, storage tank accumulation of heat
Less than when carrying out preventing threshold value Q needed for freeze operation, controller 100 proceeds by heat storage operation to amount, until in storage tank 10
The enough heats of interior storage.By carrying out the heat storage operation, next day supplying hot water can be stored in storage tank 10 and start to make a reservation for
Carry out preventing the heat (warm water) needed for freeze operation till moment.Therefore, afterwards, in the hot-water supply system 2 of the present embodiment,
Controller 100 makes heat pump 50 shut down, and makes the Warm water circulation in storage tank, carries out preventing freeze operation, supplies until next day
Hot water starts predetermined instant.That is, in the present embodiment, it is possible to suppress heat pump 50 frequently to operate or shut down, and can fit
Locality prevents the pipeline to form storage tank water circulation path 20 generation from freezing.
Below, the corresponding relation of the present embodiment and the contents of claim is illustrated.In addition, in figure 6 the step of S80
In the heat storage operation that carries out be " preventing from freezing to use heat storage operation " an example.In addition, the heat of threshold value Q is " regulation heat "
An example.
(the 3rd embodiment)
Then, with reference to Fig. 8, centered on the difference of the 3rd embodiment and the 2nd embodiment, the supplying hot water to the 3rd embodiment
System 2 is illustrated.In the hot-water supply system 2 of the present embodiment, what controller 100 was carried out the 2nd prevents from freezing processing and the 2nd
The 2nd carried out in embodiment prevents from freezing to process identical (Fig. 6).But, in the present embodiment, prevent from freezing place carrying out the 2nd
During reason, when warm water is opened using the hot water tap of position (when having water requirements), the adjustment mixing of controller 100
The aperture of valve 42, so that the water in storage tank 10 is supplied in supply passageway 40.In this case, controller 100 is by control
The heat that the aperture and burner heater 60 of mixing valve processed 42 is exported so that the temperature of the water supplied by storage tank 10 with
Supplying hot water design temperature is consistent.In the present embodiment, carry out the 2nd prevent from freezing processing during, carry out supplying hot water operation
When, position is utilized because the warm water in storage tank 10 is fed into warm water, thus storage tank amount of stored heat subtracts because of supplying hot water operation
It is few.
(specific example 3：Fig. 8)
Then, with reference to Fig. 8, illustrate that the 2nd is carried out in the hot-water supply system 2 of the present embodiment prevents from freezing the situation of process
Specific example.Same day supplying hot water in the example of Fig. 8 terminates predetermined instant (22:00), next day supplying hot water starts predetermined instant (7:
And each condition such as thermal discharge hourly (200 kilocalories) is identical with the example of Fig. 4, Fig. 5 and Fig. 7 00).
In this example embodiment, 22:The storage tank amount of stored heat calculated when 00 is 4200 kilocalories, and the amount of stored heat is more than required heat
(1800 kilocalories).Certainly, also greater than threshold value Q (200 kilocalories), (judged result of step S76 in Fig. 6 is storage tank amount of stored heat
"No").Therefore, at this moment controller 100 waits and do not carry out heat storage operation, but makes circulating pump 22 operate, and makes in storage tank 10
And the water circulation in storage tank water circulation path 20, proceeding by prevents freeze operation (step S88 in Fig. 6).
In this example embodiment, 2:00～3:Supplying hot water operation is proceeded by between 00.In the present embodiment, when carrying out
2 when preventing from freezing carrying out supplying hot water during processing operating, and the warm water in storage tank 10 is fed into warm water and utilizes position.Cause
This, as shown in figure 8,2:00～3:Storage tank amount of stored heat between 00 is greatly decreased.3:The storage tank accumulation of heat calculated when 00
Measure as 320 kilocalories, the amount of stored heat is more than threshold value Q (200 kilocalories) (in figure 6 the step of the judged result of S76 be "No").Cause
This, controller 100 proceeds to prevent freeze operation (step S88 in Fig. 6).In addition, 3:The storage tank calculated when 05 stores
Heat is from 3:The storage tank amount of stored heat (320 kilocalories) calculated when 00 increases to 400 kilocalories, meanwhile, transported by making circulating pump 22
Turn, the distribution of water temperature in storage tank 10 and in storage tank water circulation path 20 can be made to reach uniformly.
Afterwards, 5:The storage tank amount of stored heat calculated when 00 is 0 kilocalorie, and the storage tank amount of stored heat is less than threshold value Q (in Fig. 6
In step S76 judged result be "Yes").That is, 5:Not storing in storage tank 10 when 00 carries out preventing freeze operation institute
The minimum regulatory heat for needing.Therefore, controller 100 calculates 5:00 to next day supplying hot water starts predetermined instant (7:00) in a period of
Carry out preventing the heat needed for freeze operation, and using the required heat as required heat (step S78).In such case
Under, it is necessary to heat is 400 kilocalories (200 kilocalories × 2).Then, controller 100 carries out heat storage operation (step S80 in Fig. 6).
Controller 100 carries out heat storage operation to 5:10 result is that storage tank amount of stored heat is increased to 400 kilocalories, identical with required heat
(in figure 6 the step of S82 judged result be "Yes").In this case, controller 100 makes heat pump 50 shut down, knot
Beam heat storage operation, and make circulating pump 22 remain in operation, proceeding by prevents freeze operation (step S84 in Fig. 6).
Afterwards, controller 100 makes circulating pump 22 remain in operation, so that in storage tank 10 and in storage tank water circulation path 20
Water circulation, proceeding by prevents freeze operation, until next day supplying hot water starts the 7 of predetermined instant:00.As a result, 7:When 00,
Storage tank amount of stored heat is just reduced to 0 kilocalorie.
Structure and the action of the hot-water supply system 2 of the present embodiment is described above.Terminate pre- have passed through same day supplying hot water
After timing is carved, storage tank amount of stored heat is less than when carrying out preventing the lowest threshold Q needed for freeze operation, the supplying hot water of the present embodiment
System 2 proceeds by heat storage operation.Therefore, the hot-water supply system 2 of the present embodiment is carrying out the 2nd process for preventing from freezing to process
In, even if by the warm water in storage tank 10 for supplying hot water operation, in the case of as a result causing the shortage of heat in storage tank 10,
Controller 100 can also carry out heat storage operation when the shortage of heat in storage tank 10.Therefore, using the confession of the present embodiment
During hot-water heating system 2, regardless of the warm water utilization obstacle in storage tank 10, required heat is may insure.
Although illustrating each embodiment in detail above, the various embodiments described above are example, not to the present invention's
The restriction of claims.In technology described in claims also comprising the various modifications that carry out to above-mentioned specific example and
Content after change.
(variation 1) in the 3rd embodiment, when have passed through same day supplying hot water and terminate predetermined instant, storage tank stores
Heat starts predetermined instant (7 less than moment to the next day supplying hot water for terminating predetermined instant through (being later than) same day supplying hot water:00)
In a period of when carrying out preventing heat (the required heat) needed for freeze operation, controller can carry out heat storage operation, until storage
Water tank heat storage amount is more than required heat.
(variation 2) in the various embodiments described above, controller 100 carry out the 2nd prevent from freezing processing during, when outer
When portion's temperature (temperature detected by temperature sensor 52) is more than 6 DEG C, controller 100 can terminate the 2nd to be prevented from freezing to process.
Numerical value, numerical value of minimum amount of stored heat of (variation 3) threshold value Q etc. and various numerical value are not limited to above-mentioned each enforcement
The example of example, according to the difference of environment etc., can be arranged the numerical value of threshold value Q, numerical value of minimum amount of stored heat etc. and various numerical value
For any number.
Claims (3)
1. a kind of hot-water supply system,
With storage tank, storage tank water circulation path, heat pump, external temperature sensor, cooling-water temperature sensor and controller, wherein,
Storage tank is used for storage and is supplied to water of the warm water using position；
Storage tank water circulation path imports the water in storage tank, and imported water is back in storage tank；
Heat pump absorbs heat from extraneous air, and the water in storage tank water circulation path is heated；
External temperature sensor is used to detect outside air temperature；
Cooling-water temperature sensor is used to detect the water temperature in each portion in storage tank,
Characterized in that,
Controller is based on past practical situation, predetermined instant is started to the supplying hot water in the unit interval and supplying hot water terminates to make a reservation for
Moment is determined, wherein, it is the start time for initially supplying warm water that supplying hot water starts predetermined instant；Supplying hot water terminates predetermined instant
It is later than supplying hot water and starts predetermined instant, it is the finish time for finally supplying warm water that the supplying hot water terminates predetermined instant,
Water temperature of the controller based on each portion in storage tank, calculates the heat being stored in storage tank,
When supplying hot water within the current one time terminates after predetermined instant outside air temperature and is less than set point of temperature, controller makes heat
Pump shuts down, and makes the water circulation in storage tank water circulation path, carries out preventing freeze operation,
Supplying hot water within the current one time terminates after predetermined instant, starts to the supplying hot water in the next unit interval pre-
Before timing is carved, in order to carry out preventing freeze operation, needs from enough heats are stored in storage tank, enough heats are being reached
Before, controller enter to exercise heat pump operating prevent freeze to use heat storage operation.
2. hot-water supply system according to claim 1, it is characterised in that
Supplying hot water of the controller in it have passed through the current one time terminates after predetermined instant, carries out described preventing from freezing immediately
Use heat storage operation.
3. hot-water supply system according to claim 1 and 2, it is characterised in that
When the heat in storage tank is less than the minimum regulatory heat needed for carrying out preventing freeze operation, controller carries out described anti-
Only freeze to use heat storage operation.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2012-265363 | 2012-12-04 | ||
| JP2012265363A JP5699120B2 (en) | 2012-12-04 | 2012-12-04 | Hot water system |
| PCT/JP2013/071407 WO2014087701A1 (en) | 2012-12-04 | 2013-08-07 | Hot-water supply system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104797890A CN104797890A (en) | 2015-07-22 |
| CN104797890B true CN104797890B (en) | 2017-04-26 |
Family
ID=50883133
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201380059919.1A Expired - Fee Related CN104797890B (en) | 2012-12-04 | 2013-08-07 | Hot-water supply system |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP5699120B2 (en) |
| KR (1) | KR101572439B1 (en) |
| CN (1) | CN104797890B (en) |
| WO (1) | WO2014087701A1 (en) |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6388549B2 (en) * | 2015-02-16 | 2018-09-12 | リンナイ株式会社 | Hot water heating system |
| JP6487235B2 (en) * | 2015-02-16 | 2019-03-20 | リンナイ株式会社 | Hot water heating system |
| JP2018004158A (en) * | 2016-07-01 | 2018-01-11 | リンナイ株式会社 | Heat medium circulation device |
| JP6902405B2 (en) * | 2017-06-14 | 2021-07-14 | リンナイ株式会社 | Hot water supply system |
| JP6977332B2 (en) * | 2017-06-26 | 2021-12-08 | 株式会社ノーリツ | Hot water storage and hot water supply device |
| CN107726682A (en) * | 2017-10-12 | 2018-02-23 | 青岛海尔空调电子有限公司 | The anti-refrigeration control method of source pump |
| CN107842896A (en) * | 2017-11-30 | 2018-03-27 | 湖南埃瓦新能源科技有限公司 | A kind of low temperature environment heat pump with anti-frost protection and its antifreeze method |
| CN110822700B (en) * | 2019-11-12 | 2021-06-15 | 珠海格力电器股份有限公司 | Wall-mounted furnace and control method thereof |
| CN111594902B (en) * | 2020-06-02 | 2022-03-01 | 宁波奥克斯电气股份有限公司 | Anti-freezing method and floor heating system |
| KR20230157945A (en) * | 2021-02-07 | 2023-11-17 | 옥토퍼스 에너지 히팅 리미티드 | Methods and systems for performing a heat pump defrost cycle |
| WO2022168047A1 (en) * | 2021-02-07 | 2022-08-11 | Octopus Energy Group Limited | Methods and systems for performing a heat pump defrost cycle |
| DE102022105661A1 (en) * | 2022-03-10 | 2023-09-14 | Viessmann Climate Solutions Se | Method for operating a heat generator |
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| JP2004257583A (en) * | 2003-02-24 | 2004-09-16 | Matsushita Electric Ind Co Ltd | Storage water heater |
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- 2012-12-04 JP JP2012265363A patent/JP5699120B2/en active Active
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2013
- 2013-08-07 KR KR1020157011438A patent/KR101572439B1/en not_active IP Right Cessation
- 2013-08-07 CN CN201380059919.1A patent/CN104797890B/en not_active Expired - Fee Related
- 2013-08-07 WO PCT/JP2013/071407 patent/WO2014087701A1/en active Application Filing
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101644456A (en) * | 2008-08-04 | 2010-02-10 | Lg电子株式会社 | Method for controlling hot water circulation system associated with heat pump |
| CN102084190A (en) * | 2009-04-21 | 2011-06-01 | 松下电器产业株式会社 | Hot water storage-type hot water supply device, hot water supply and heating device, operation control device, operation control method, and program |
| CN101865537A (en) * | 2010-06-30 | 2010-10-20 | 苏州新亚科技有限公司 | Solar heat pump water heater |
| CN102538197A (en) * | 2012-03-03 | 2012-07-04 | 广东万和新电气股份有限公司 | Heat pump water heater with freeze protection function |
Also Published As
| Publication number | Publication date |
|---|---|
| KR101572439B1 (en) | 2015-11-27 |
| KR20150065818A (en) | 2015-06-15 |
| JP5699120B2 (en) | 2015-04-08 |
| WO2014087701A1 (en) | 2014-06-12 |
| CN104797890A (en) | 2015-07-22 |
| JP2014109422A (en) | 2014-06-12 |
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