CN104797890A - Hot-water supply system - Google Patents
Hot-water supply system Download PDFInfo
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- CN104797890A CN104797890A CN201380059919.1A CN201380059919A CN104797890A CN 104797890 A CN104797890 A CN 104797890A CN 201380059919 A CN201380059919 A CN 201380059919A CN 104797890 A CN104797890 A CN 104797890A
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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 398
- 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 50
- 230000008676 import Effects 0.000 claims description 13
- 239000000498 cooling water Substances 0.000 claims description 9
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 230000002265 prevention Effects 0.000 abstract 3
- 238000000034 method Methods 0.000 description 57
- 238000010438 heat treatment Methods 0.000 description 10
- 239000003795 chemical substances by application Substances 0.000 description 9
- 238000005516 engineering process Methods 0.000 description 7
- 230000002093 peripheral effect Effects 0.000 description 7
- 238000011144 upstream manufacturing Methods 0.000 description 5
- 238000002485 combustion reaction Methods 0.000 description 4
- 238000000205 computational method Methods 0.000 description 3
- 238000012544 monitoring process Methods 0.000 description 3
- 239000003638 chemical reducing agent Substances 0.000 description 2
- 230000001276 controlling effect Effects 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
- 238000009825 accumulation Methods 0.000 description 1
- 235000021152 breakfast Nutrition 0.000 description 1
- 230000001680 brushing effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000019771 cognition Effects 0.000 description 1
- 230000006837 decompression 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
- 230000003203 everyday effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Classifications
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- 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
Landscapes
- 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)
- Heat-Pump Type And Storage Water Heaters (AREA)
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 (S56-S60).
Description
Technical field
Technology disclosed in this specification relates to a kind of hot-water supply system.
Background technology
A kind of Teat pump boiler is disclosed in Japanese invention Patent Publication No flat No. 11-63661 (hereinafter referred to patent document 1), this Teat pump boiler has hot water reservoir, peripheral passage, heat pump, cooling-water temperature sensor and judging part, wherein, hot water storage tank is for storing water; Water in hot water storage tank is at peripheral passage Inner eycle; Heat pump heats the water at peripheral passage Inner eycle; Cooling-water temperature sensor is for detecting the water temperature in hot water reservoir; Judging part is for judging the water temperature that detected by cooling-water temperature sensor whether below set point of temperature.In this Teat pump boiler, when judging part is judged as that the water temperature that detected by cooling-water temperature sensor is below set point of temperature, then makes heat pump operate, and make water at peripheral passage Inner eycle, that carries out preventing the water in peripheral passage from freezing prevents freeze operation.
In the technology of patent document 1, when needs carry out preventing freeze operation, just need to make heat pump operate or shut down.As a result, the running of heat pump or the number of times shut down become many, thus cause the overall efficiency of heat pump to reduce.
Summary of the invention
There is provided a kind of hot-water supply system in this manual, the increase of number of times that this hot-water supply system can suppress heat pump to operate or shut down, and can suitably prevent pipe arrangement base part from freezing.
After inventors of the present invention carry out conscientious discussion, make following judgement: find observe the habits and customs of different home within the unit interval of 24 hours (one day) after, whichever family, in the last time during warm water supply end to next day the earliest a warm water supply beginning, need the possibility of warm water all smaller.
Hot-water supply system disclosed in this description is the invention carried out based on above-mentioned cognition.Hot-water supply system disclosed in this description has storage tank, storage tank water circulation path, heat pump, external temperature sensor, cooling-water temperature sensor and controller, and wherein, storage tank is supplied to for storing the water that warm water utilizes position; Storage tank water circulation path imports the water in storage tank, and makes imported water be back in storage tank; Heater absorbs heat from extraneous air, heats the water in storage tank water circulation path; External temperature sensor is for detecting outside air temperature; Cooling-water temperature sensor is for detecting the water temperature of each several part in storage tank.Controller is based on the actual conditions in past, and start predetermined instant and supplying hot water to the supplying hot water within the unit interval and terminate predetermined instant and determine, 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 and starts predetermined instant, and this supplying hot water terminates the finish time that predetermined instant is last supplying hot water.In addition, controller, based on the water temperature in portion each in storage tank, calculates the heat of savings in storage tank.In addition, supplying hot water within the current one time terminate predetermined instant after outside air temperature lower than set point of temperature time, control part makes heat pump shut down, and make the water circulation in storage tank water circulation path, carry out preventing freeze operation, and, after supplying hot water within the current one time terminates predetermined instant, before starting predetermined instant to the supplying hot water in the next unit interval, in order to carry out preventing freeze operation, need in storage tank, store enough heats, before reaching enough heat, what controller carried out heat pump is operated prevents from freezing to use heat storage operation.
After the supplying hot water of above-mentioned hot-water supply system within the current one time terminates predetermined instant, before starting predetermined instant to the supplying hot water in the next unit interval, in order to carry out preventing freeze operation, need in storage tank, store enough heats, before reaching enough heat, what controller carried out heat pump is operated prevents from freezing to use heat storage operation.By carrying out preventing from freezing by heat storage operation, till the supplying hot water that can be stored in storage tank in the next unit interval starts predetermined instant, carry out the heat (warm water) prevented needed for freeze operation.Therefore, the supplying hot water within the current one time terminates in during predetermined instant starts predetermined instant to the supplying hot water in the next unit interval, and controller can make heat pump shut down, and makes the water circulation in storage tank, carries out preventing freeze operation.As a result, heat pump can be suppressed to operate continually or shut down.Therefore, above-mentioned hot-water supply system can suppress the increase of heat pump running or the number of times that shuts down, and can suitably prevent pipe arrangement base part from freezing.
Accompanying drawing explanation
Fig. 1 is the figure of the structure of the hot-water supply system 2 schematically showing the 1st embodiment.
Fig. 2 is in the hot-water supply system 2 of the 1st embodiment, the 1st prevents the flow chart that freezes to process supplying hot water starts to carry out in during predetermined instant terminates predetermined instant to supplying hot water on the same day the same day.
Fig. 3 is in the hot-water supply system 2 of the 1st embodiment, the 2nd prevents the flow chart that freezes to process supplying hot water terminates to carry out in during predetermined instant starts predetermined instant to supplying hot water next day the same day.
Fig. 4 represents to carry out the table that the 2nd of the 1st embodiment prevents the object lesson (1A) freezed when processing.
Fig. 5 represents to carry out the table that the 2nd of the 1st embodiment prevents the object lesson (1B) freezed when processing.
Fig. 6 is in the hot-water supply system 2 of the 2nd embodiment, the 2nd prevents the flow chart that freezes to process supplying hot water terminates to carry out in during predetermined instant starts predetermined instant to supplying hot water next day the same day.
Fig. 7 represents to carry out the table that the 2nd of the 2nd embodiment prevents the object lesson (2) freezed when processing.
Fig. 8 represents to carry out the table that the 2nd of the 3rd embodiment prevents the object lesson (3) freezed when processing.
Detailed description of the invention
First, list below the principal character of embodiment that will illustrate.In addition, below described technology essential factor be independently technology essential factor respectively, play technology serviceability by being used alone or carrying out various combination, its combination is not limited to combination described in claims when proposing of the present invention.
(feature 1) controller can, after have passed through the supplying hot water in the current one time and terminating predetermined instant, carry out preventing from freezing to use heat storage operation immediately.By adopting this structure, hot-water supply system after have passed through the supplying hot water in the current one time and terminating predetermined instant, can carry out the heat (warm water) prevented needed for freeze operation in storage tank till the supplying hot water be stored into immediately in the next unit interval starts predetermined instant.
(feature 2)
When the heat in storage tank is less than the minimum regulatory heat carrying out preventing needed for freeze operation, controller can carry out preventing from freezing to use heat storage operation.By adopting this structure, even if after the supplying hot water such as within the current one time terminates predetermined instant, warm water in storage tank is used for supplying hot water, when result makes the shortage of heat in storage tank, hot-water supply system also can the time point of shortage of heat in storage tank carry out preventing from freezing to use heat storage operation.Therefore, regardless of the utilization obstacle of the warm water in storage tank, hot-water supply system can guarantee the heat carrying out till the supplying hot water in the next unit interval starts predetermined instant preventing needed for freeze operation.
(the 1st embodiment)
As shown in Figure 1, the hot-water supply system 2 involved by the present embodiment has storage tank 10, storage tank water circulation path 20, running water importing path 30, supply passageway 40, heat pump 50, burner heater 60 and controller 100.
Heat pump 50 absorbs heat from extraneous air, to the thermal source that the water in storage tank water circulation path 20 heats.Although do not show in the drawings, heat pump 50 has heating agent peripheral passage, evaporimeter, compressor reducer, heat exchanger and expansion valve, and wherein, heating agent (CFC substitute, such as R410A etc.) is at heating agent peripheral passage Inner eycle; Evaporimeter makes to carry out heat exchange between extraneous air and heating agent; Compressor reducer compresses heating agent, makes heating agent be in high-temperature high-pressure state; Heat exchanger makes to carry out heat exchange between the water in storage tank water circulation path 20 and the heating agent being in high-temperature high-pressure state; Expansion valve make heat exchange terminate after heating agent decompression and be in low temperature.In addition, heat pump 50 has the external temperature sensor 52 for detecting outside air temperature.
Storage tank 10 is for storing the warm water after being heated by heat pump 50.Storage tank 10 is sealed containers, and the outside of this storage tank 10 is covered by heat-barrier material.Water storage is continued, until water is full in storage tank 10 in storage tank 10.In the present embodiment, the capacity of storage tank 10 is 100 liters.Storage tank 10 is provided with thermistor 11,12,13,14,15, and this thermistor 11,12,13,14,15 separates predetermined distance configuration in the short transverse of storage tank 10.Each thermistor 11,12,13,14,15 is for detecting the water temperature of its installed position.Such as, each thermistor 11,12,13,14,15 detects the water temperature of 0 liter, 20 liters, 40 liters, 60 liters, the 80 liters position counted by the top of storage tank 10 respectively.
The upstream extremity of storage tank water circulation path 20 is connected with the bottom of storage tank 10, and the downstream of storage tank water circulation path 20 is connected with the top of storage tank 10.Storage tank water circulation path 20 is provided with circulating pump 22.Water in storage tank water circulation path 20 is delivered to side, downstream by side, upstream by this circulating pump 22.In addition, storage tank water circulation path 20 is by the heat exchanger (omitting diagram) of heat pump 50.Therefore, when making heat pump 50 operate, the water in storage tank water circulation path 20 is by the heat exchanger heats of heat pump 50.Therefore, when making circulating pump 22 and heat pump 50 operates, then the water of storage tank 10 bottom is heated by heat pump 50, and is back to the top of storage tank 10 by the water that heat pump 50 heats.That is, storage tank water circulation path 20 is the water circulation paths to storage tank 10 accumulation of heat.In addition, in the side, upstream of the close heat pump 50 of storage tank water circulation path 20, thermistor 24 is installed.This thermistor 24 is for detecting the temperature by the water before heat pump 50 be exported by the bottom of storage tank 10.In other words, thermistor 24 is for detecting the water temperature of the 10 liters of positions counted by the top of storage tank 10.
The upstream extremity that running water imports path 30 is connected with running water supply source 31.Import on path 30 at running water and thermistor 32 is installed.This thermistor 32 is for detecting the temperature of running water.Side, the downstream fork that running water imports path 30 is that the 1st importing path 30a and the 2nd imports path 30b.1st downstream importing path 30a is connected with the bottom of storage tank 10.2nd downstream importing path 30b is connected with the mid portion of supply passageway 40 described later.The coupling part of the 2nd downstream and supply passageway 40 importing path 30b is provided with mixing valve 42.This mixing valve 42 is mixed into the amount in the warm water in supply passageway 40 for the water adjusted in the 2nd importing path 30b.
The upstream extremity of supply passageway 40 is connected with the top of storage tank 10.As mentioned above, mid portion and the running water of supply passageway 40 import the 2nd of path 30 and import path 30b and be connected, and both coupling parts are provided with mixing valve 42.The position of ratio connecting portion (the importing the connecting portion that path 30b is connected with the 2nd of the supply passageway 40) side downstream of supply passageway 40 is provided with burner heater 60.In addition, on the position of side, downstream, thermistor 44 is installed than burner heater 60 at supply passageway 40.This thermistor 44 is for detecting the temperature of supplied warm water.Being supplied to the temperature of the warm water in supply passageway 40 (namely by storage tank 10, the temperature detected by thermistor 12) lower than supplying hot water design temperature time, water in burner heater 60 pairs of supply passageways 40 heats, to make the temperature of the warm water detected by thermistor 44 consistent with supplying hot water design temperature.Downstream and the warm water of supply passageway 40 utilize position (such as kitchen, bathtub etc.) to be connected.
Controller 100 and each structural element are electrically connected, and this controller 100 is for controlling the action of each structural element.
Next, the action of the hot-water supply system 2 of the present embodiment is described.Hot-water supply system 2 can carry out heat storage operation, supplying hot water operation and prevent freeze operation these three kinds operations.Below each operation is described.
(heat storage operation)
Heat storage operation utilizes the heat generated by heat pump 50 to heat the operation of the water in storage tank 10.When controller 100 sends the instruction carrying out heat storage operation, heat pump 50 starts running, and circulating pump 22 starts to rotate.When circulating pump 22 starts to rotate, the water in storage tank 10 starts at storage tank water circulation path 20 Inner eycle.That is, the water of storage tank 10 bottom is imported in storage tank water circulation path 20, and when importing the water in storage tank water circulation path 20 and passing through the heat exchanger of heat pump 50, water is heated by the heat from heating agent, and the water after heating is back to the top of storage tank 10.Thus, water higher for temperature can be stored in storage tank 10.Thus, form high temperature water layer on the top of storage tank 10, form low temperature water layer in the bottom of storage tank 10.
(supplying hot water operation)
Supplying hot water operation is that the water in storage tank 10 is supplied to the operation that warm water utilizes position.When carrying out above-mentioned heat storage operation, supplying hot water operation can be carried out simultaneously.When warm water utilizes the hot water tap of position to be opened, due to the effect of the hydraulic pressure from running water supply source 31, controller 100 makes running water import by running water the bottom that path 30 (the 1st imports path 30a) flow into storage tank 10.Meanwhile, the warm water on storage tank 10 top is supplied to warm water via supply passageway 40 and utilizes position.
When being supplied to the temperature of the water in supply passageway 40 (namely by storage tank 10, the temperature detected by thermistor 12) higher than supplying hot water design temperature time, open mixing valve 42 by controller 100, make running water import path 30b by the 2nd and import in supply passageway 40.Therefore, the water supplied by storage tank 10 with import by the 2nd the running water that path 30b supplies and mix in supply passageway 40.Controller 100 adjusts the aperture of mixing valve 42, utilizes the temperature of the water of position consistent with supplying hot water design temperature to make being supplied to warm water.In addition, when the temperature of water being supplied to supply passageway 40 by storage tank 10 is lower than supplying hot water design temperature, controller 100 makes burner heater 60 operate.Thus, the burned device heater 60 of water of flowing in supply passageway 40 is heated.The heat that controller 100 control combustion device heater 60 exports, utilizes the temperature of the water of position consistent with supplying hot water design temperature to make being supplied to warm water.
In addition, in the present embodiment, due to the difference of time period, there is following situation sometimes: when warm water utilizes the hot water tap of position to be opened, the aperture of mixing valve 42 is adjusted by controller 100, to make the water in storage tank 10 not be supplied in supply passageway 40, be only supplied in supply passageway 40 by the running water importing path 30b supply by the 2nd, details can be described later.In this case, controller 100 makes burner heater 60 operate, and carrys out the heat that control combustion device heater 60 exports, and utilizes the temperature of the water of position consistent with supplying hot water design temperature to make being supplied to warm water.
(preventing freeze operation)
Prevent freeze operation from being the operation preventing from causing the pipeline forming storage tank water circulation path 20 (particularly by the part of the heat exchanger of heat pump 50) to break because the water in storage tank water circulation path 20 freezes.When controller 100 sends the instruction carrying out preventing freeze operation, circulating pump 22 starts running, and the water in storage tank 10 starts at storage tank water circulation path 20 Inner eycle.As shown in explanation below, in the present embodiment, when specifying, controller 100 carries out preventing freeze operation (the step S22 in Fig. 2) while circulating pump 22 and heat pump 50 are operated.In addition, in the present embodiment, due to the difference of time period, what controller 100 carried out prevents the content freezing process different (with reference to Fig. 2, Fig. 3), is accompanied by this, prevents the content of freeze operation also different.
(process that controller 100 carried out in every 24 hours)
In the present embodiment, controller 100 is handled as follows corresponding to family's (hereinafter referred to " particular home ") habits and customs in a day being provided with hot-water supply system 2.In the present embodiment, controller 100 was set to the unit interval for determining one day by 24 hours that take 2:00 as starting point.
Below, the example of the habits and customs of particular home is described.In specific family, start supplying hot water at about the 7:00 of every day.The hot water of initial supply is such as preparing breakfast or washing one's face.Then, at about 11:30 in the morning, in order to prepare lunch, second time supplying hot water is started.Moreover about 19:00 in the afternoon, carries out operating for the supplying hot water to hot-water flooding in bathtub.Then, about 22:00 at night, starts the last supplying hot water in a day.The hot water of last supply is used for brushing teeth.
In the present embodiment, in specific family, whenever carrying out supplying hot water operation, controller 100 all can store the time information representing supplying hot water start time and represent supplying hot water finish time.Controller 100 stores the time information of particular home in the past in seven days.In addition, the time information of controller 100 before will removing eight days for 24 hours, stores the time information of the previous day again.
Then, controller 100, according to the time information in particular home in the past seven days, determines the moment the earliest in the start time of initial supplying hot water in seven days in the past.In specific family, after have passed through this moment, the possibility starting to carry out supplying hot water operation is higher.Below, this moment is called " supplying hot water starts predetermined instant ".
In addition, controller 100, according to the time information in particular home in the past seven days, determines the moment the latest in the finish time of last supplying hot water in seven days in the past.In specific family, after have passed through this moment, until supplying hot water started predetermined instant just to start the possibility of supplying hot water higher next day.Below, this moment is called " supplying hot water terminates predetermined instant ".
(preventing of carrying out of controller 100 freezes process)
Then, freeze process to preventing of carrying out of the controller 100 of the hot-water supply system 2 by the present embodiment to be described.As mentioned above, in the present embodiment, due to the difference of time period, what controller 100 carried out prevent freezes the content that processes also different (with reference to Fig. 2, Fig. 3).Below, two kinds different prevented freezing process and are described.
(the 1st prevents from freezing process)
Fig. 2 be undertaken by controller 100 the 1st prevent from freezing the flow chart that processes.1st prevent from freezing to process be the same day supplying hot water start the process carried out in during predetermined instant terminates predetermined instant to supplying hot water on the same day.Therefore, start predetermined instant at current time through supplying hot water, controller 100 starts to carry out the 1st to be prevented from freezing process.
In step S10, S12, controller 100 to the temperature detected by thermistor 24 (temperature of storage tank 10 bottom) whether lower than 10 DEG C, and whether the temperature that external temperature sensor 52 detects (that is, outside air temperature) judges lower than 3 DEG C.When the temperature detected by thermistor 24 is lower than 10 DEG C, and the temperature detected by external temperature sensor 52 lower than 3 DEG C time, the judged result of controller 100 in step S10 and step S12 is "Yes", enters step S14 afterwards.
In step S14, controller 100 makes circulating pump 22 operate.Thus the water in storage tank 10 starts at storage tank water circulation path 20 Inner eycle.Thus, the distribution of water temperature in storage tank 10 and in storage tank water circulation path 20 reaches even.Controller 100 enters step S16, S18, S20 make circulating pump 22 running in step S14 after.
In step s 16, controller 100 is monitored the temperature that detected by thermistor 24 and whether be continue for 3 minutes higher than the state of 13 DEG C.Meanwhile, in step S18, whether controller 100 monitors the temperature that detected by external temperature sensor 52 higher than 6 DEG C.In addition, meanwhile, in step S20, controller 100 is monitored the temperature that detected by thermistor 24 and whether be continue for 30 minutes lower than the state of 8 DEG C.
In step S14, by making circulating pump 22 operate, thus the distribution of water temperature in storage tank 10 and in storage tank water circulation path 20 is made to reach even.As a result, the water temperature in storage tank 10 and storage tank water circulation path 20 is sometimes higher than 13 DEG C.If the water temperature in storage tank 10 and storage tank water circulation path 20 continue for certain hour (more than 3 minutes) higher than the state of 13 DEG C, the pipeline forming storage tank water circulation path 20 causes the possibility of breaking less because freezing.In this case, controller 100 judged result is in step s 16 "Yes", afterwards, enters step S28, and circulating pump 22 is shut down.In this case, controller 100 is back to step S10 and step S12 again, carries out monitoring operation.
In addition, in during making circulating pump 22 operate, outside air temperature is sometimes higher than 6 DEG C.In this case, the pipeline forming storage tank water circulation path 20 causes the possibility of breaking also less because freezing.In this case, the judged result of controller 100 in step S18 is "Yes", enters step S28 afterwards, and circulating pump 22 is shut down.In this case, controller 100 is also back to step S10 and step S12 again, carries out monitoring operation.
In addition, in step S14, though when by make circulating pump 22 operate the water circulation making in storage tank 10 and in storage tank water circulation path 20, the temperature detected by thermistor 24 sometimes also can lower than 8 DEG C.If the temperature that thermistor 24 detects is not eliminated lower than the state of 8 DEG C and continue for certain hour (more than 30 minutes), the pipeline forming storage tank water circulation path 20 may cause because freezing breaking.In this case, the judged result of controller 100 in step S20 is "Yes", enters step S22 afterwards.
In step S22, thermistor 24 makes heat pump 50 operate further.Thus in storage tank water circulation path 20, the water of flowing is heated by heat pump 50, and is back to the top of storage tank 10 by the water that heat pump 50 heats.Thus, raise gradually in the temperature of the water of storage tank 10 and storage tank water circulation path 20 Inner eycle.Controller 100 makes heat pump 50 operate in step S22, enters step S24 afterwards.
In step s 24 which, controller 100 is monitored the temperature that detected by thermistor 24 and whether be continue for 5 minutes higher than the state of 15 DEG C.As mentioned above, by circulating pump 22 running with heat pump 50, make storage tank 10 in and the temperature rising of water of storage tank water circulation path 20 Inner eycle.If the temperature detected by thermistor 24 rises to the temperature higher than 15 DEG C, and this state continue for certain hour (more than 5 minutes), then the pipeline forming storage tank water circulation path 20 causes the possibility of breaking less because freezing.In this case, controller 100 judged result is in step s 24 which "Yes", enters step S26 afterwards, and heat pump 50 and circulating pump 22 are shut down.At the end of step S26, controller 100 makes process again be back to step S10 and step S12, carries out monitoring operation.
Controller 100 the same day supplying hot water start in during predetermined instant terminates predetermined instant to supplying hot water, repeatedly carry out the various process of above-mentioned step S10 ~ step S28.
(the 2nd prevents from freezing process)
Fig. 3 be undertaken by controller 100 the 2nd prevent from freezing the flow chart that processes.2nd prevent from freezing to process be the same day supplying hot water terminate the process carried out in (that is, carrying out supplying hot water operation possibility less time period) during predetermined instant starts predetermined instant to supplying hot water next day.Terminate predetermined instant at current time through supplying hot water, controller 100 starts to carry out the 2nd to be prevented from freezing process.
In step S40, step S42, whether controller 100 is to the temperature detected by thermistor 24 lower than 3 DEG C, and whether the temperature detected by external temperature sensor 52 judges lower than 3 DEG C.When the temperature detected by thermistor 24 is lower than 3 DEG C, and the temperature detected by external temperature sensor 52 lower than 3 DEG C time, the judged result of controller 100 in step S40 and step S42 is "Yes", enters step S44 afterwards.
In step S44, controller 100, based on each temperature detected by thermistor 11 ~ 15,24, calculates the amount of stored heat (hereinafter referred to " storage tank amount of stored heat ") in the storage tank 10 of current time.Specifically, controller 100 utilizes formula 1 below, calculates the amount of stored heat of storage tank.
(formula 1) storage tank amount of stored heat [kilocalorie]=(temperature detected by thermistor 11+detected by thermistor 12 temperature)/2 × 20 [liters]+(temperature detected by thermistor 12+detected by thermistor 13 temperature)/2 × 20 [liters]+(temperature detected by thermistor 13+detected by thermistor 14 temperature)/2 × 20 [liters]+(temperature detected by thermistor 14+detected by thermistor 15 temperature)/2 × 20 [liters]+(thermistor 15+ thermistor 24)/2 × 20 [liter]-300 [kilocalorie]
The minimum amount of stored heat of what 300 [kilocalories] in above-mentioned formula 1 represented is storage tank 10.That is, the amount of stored heat (3 DEG C × 100 liters) when 300 [kilocalorie] represents that each temperature detected by thermistor 11 ~ 15,24 is 3 DEG C.In formula 1, by deducting minimum amount of stored heat 300 [kilocalorie] from total amount of stored heat of storage tank 10, calculate storage tank amount of stored heat, this storage tank amount of stored heat is the actual amount of stored heat in storage tank 10.
Then, in step S46, controller 100 calculate the same day supplying hot water terminate to proceed in during predetermined instant starts predetermined instant to supplying hot water next day to prevent the heat needed for freeze operation (hereinafter referred to " required heat ").Specifically, in step S46, controller 100 by make to preset often carry out one hour prevent freeze operation institute liberated heat (namely, thermal discharge hourly) terminate with supplying hot water on the same day time that predetermined instant starts between predetermined instant to hot water next day and be multiplied, required heat can be calculated.
In addition, when the process carrying out step S46 (same day, supplying hot water terminated predetermined instant), due to not through the time (namely, not through the moment (2:00) of unit interval conversion), thus cannot calculate " next day, supplying hot water started predetermined instant " on denotation.In the present embodiment, in step S46, " next day, supplying hot water started predetermined instant " that carry out the reference instant of supplying hot water operation as controller 100 refers to the moment identical with " same day, supplying hot water started predetermined instant (passing through) " of next day.Below, " next day, supplying hot water started predetermined instant " in this description also refers to the moment identical with " same day, supplying hot water started predetermined instant (passing through) " of next day.
Then, in step S48, controller 100 judges whether the amount of stored heat calculated in step S44 is less than the required heat calculated in step S46.When storage tank amount of stored heat is less than required heat, the judged result of controller 100 in step S48 is "Yes", enters step S50 afterwards.In addition, when storage tank amount of stored heat is more than required heat, the judged result of controller 100 in step S48 is "No", omits the process of step S50 ~ S54 afterwards, enters step S58.
In step s 50, controller 100 makes heat pump 50 and circulating pump 22 operate, and starts to carry out heat storage operation.Thus, water higher for the temperature heated by heat pump 50 is stored in storage tank 10.Controller 100 starts heat storage operation in step s 50, enters step S52 afterwards.
In step S52, controller 100 is monitored storage tank amount of stored heat and whether is reached more than required heat.As mentioned above, by starting in step s 50 to carry out heat storage operation, can storage temperature is higher in storage tank 10 gradually water.Thus when each temperature detected by thermistor 11 ~ 15,24 rises, storage tank amount of stored heat also can rise.As a result, when storage tank amount of stored heat reaches more than required heat, the judged result of controller 100 in step S52 is "Yes", enters step S54 afterwards.In addition, in step S52, controller 100 calculates the amount of stored heat of storage tank every official hour.
In step S54, controller 100 makes heat pump 50 shut down, thus terminates heat storage operation.In step S54, controller 100 makes circulating pump 22 remain in operation.That is, in step S54, controller 100 terminates heat storage operation, and starts to carry out preventing freeze operation.When controller 100 makes circulating pump 22 operate in step S54, water is in storage tank 10 and storage tank water circulation path 20 Inner eycle.As mentioned above, the heat of more than required heat can be stored in storage tank 10.Therefore, it is possible to make in storage tank and the water of storage tank water circulation path 20 Inner eycle keeps certain temperature, this temperature can prevent from the pipeline forming storage tank water circulation path 20 from producing because freezing breaking.As a result, can prevent the pipeline of storage tank water circulation path 20 from causing because freezing breaking.
In step S58, controller 100 makes circulating pump 22 operate, and carries out preventing freeze operation.When the judged result of above-mentioned steps S48 is "No", when the process carrying out step S58, when circulating pump 22 does not operate, controller 100 makes circulating pump 22 operate in step S58, starts to carry out preventing freeze operation.In addition, when when the process carrying out step S58, circulating pump 22 starts running, and when carrying out preventing freeze operation, controller 100 makes circulating pump 22 remain in operation in step S58.After step S58 terminates, enter step S60.
Then, in step S60, controller 100 is monitored current time and whether is arrived supplying hot water and start predetermined instant (as " next day, supplying hot water started predetermined instant " of reference instant in step S46).That is, controller 100 makes circulating pump 22 remain in operation, and proceeds to prevent freeze operation, until next day, supplying hot water started predetermined instant.Start predetermined instant at current time through supplying hot water, the judged result of controller 100 in step S60 is "Yes", terminates the 2nd afterwards and prevents from freezing to process (Fig. 3).In this case, controller 100 makes circulating pump 22 shut down.
In addition, in the present embodiment, prevent from freezing in the process processed carrying out the 2nd, when warm water utilizes the hot water tap of position to be opened (when there being the requirement of supplying hot water), controller 100 adjusts the aperture of mixing valve 42, to make the water in storage tank 10 not be supplied in supply passageway 40, only the running water importing path 30b supply by the 2nd is supplied in supply passageway 40.In this case, controller 100 makes burner heater 60 operate, and the heat that control combustion device heater 60 exports, utilize the temperature of the water of position consistent with supplying hot water design temperature to make being supplied to warm water.Therefore, in the present embodiment, even if prevent from execution the 2nd carrying out supplying hot water operation in the process freezing to process simultaneously, utilize position because the warm water in storage tank 10 can not be supplied to warm water, thus storage tank amount of stored heat also can not reduce because of supplying hot water.Therefore, in the present embodiment, prevent from freezing, in the process processed, the situation causing because of the deficiency of storage tank amount of stored heat cannot carrying out preventing freeze operation occurring carrying out the 2nd.
Then, with reference to Fig. 4 and Fig. 5, illustrate that in the hot-water supply system 2 of the present embodiment, carry out the 2nd prevents from freezing object lesson when processing.In the example of Fig. 4 and Fig. 5, it is 22:00 that the supplying hot water on the same day of particular home terminates predetermined instant, next day supplying hot water to start predetermined instant be 7:00.The same day supplying hot water to terminate predetermined instant to the supplying hot water next day time started between predetermined instant be 9 hours.In addition, storage tank 10 and storage tank water circulation path 20 thermal discharge hourly are 200 kilocalories.
(object lesson 1A: Fig. 4)
With reference to Fig. 4, object lesson 1A is described.When current time arrival supplying hot water terminates predetermined instant 22:00, controller 100 starts to carry out the 2nd to be prevented from freezing process (with reference to Fig. 3).In this example embodiment, the storage tank amount of stored heat calculated when 22:00 is 4200 kilocalories, must heat be 1800 kilocalories.The computational methods of storage tank amount of stored heat and required heat are described above.Therefore, in the example in fig. 4, when 22:00, the heat corresponding with required heat in storage tank 100, is stored.Thus, in this example embodiment, controller 100 can not carry out heat storage operation (judged result of the step S48 in Fig. 3 is "No") when 22:00.In this example embodiment, afterwards, controller 100 makes circulating pump 22 operate, and carries out preventing freeze operation, until next day, supplying hot water started predetermined instant 7:00.When carrying out preventing freeze operation, heat pump 50 can not operate.As a result, when 7:00 next day, storage tank amount of stored heat can be reduced to 2400 kilocalories.
(object lesson 1B: Fig. 5)
With reference to Fig. 5, object lesson 1B is described.In this example embodiment, the storage tank amount of stored heat calculated when 22:00 is 1400 kilocalories, and this storage tank amount of stored heat is less than required heat (1800 kilocalories).That is, in the example as shown in fig. 5, do not have in storage tank 10 when 22:00 to store the heat corresponding with required heat.Therefore, in this example embodiment, controller 100 carries out heat storage operation (judged result in the step S48 in Fig. 3 is "Yes", step S50) when 22:00.It is that storage tank amount of stored heat is increased to 2200 kilocalories that controller 100 proceeds heat storage operation to the result of 22:05, and being greater than must heat (judged result of the step S52 in Fig. 3 is "Yes").Therefore, controller 100 stops heat storage operation (the step S54 in Fig. 3).In this example embodiment, afterwards, controller 100 makes circulating pump 22 operate, and makes the water circulation in storage tank 10 and in storage tank water circulation path 20, carries out preventing freeze operation, until next day, supplying hot water started predetermined instant 7:00.As a result, when 7:00 next day, storage tank amount of stored heat is reduced to 400 kilocalories.
Be described above structure and the action of the hot-water supply system 2 of the present embodiment.As mentioned above, the hot-water supply system 2 of the present embodiment is as shown in the step S48 in Fig. 3 ~ S50, when the same day, supplying hot water terminated predetermined instant, when storage tank amount of stored heat is less than required heat, heat pump 50 and circulating pump 22 are operated, and carry out heat storage operation, until store enough heats in storage tank 10.By carrying out this heat storage operation, the heat (warm water) prevented needed for freeze operation carried out till next day, supplying hot water started predetermined instant can be stored in storage tank 10.Therefore, afterwards, the hot-water supply system 2 of the present embodiment can make heat pump shut down, and makes the Warm water circulation in storage tank, carries out preventing freeze operation, until next day, supplying hot water started predetermined instant.As a result, the hot-water supply system 2 of the present embodiment can terminate in during predetermined instant starts predetermined instant to supplying hot water next day at supplying hot water on the same day, suppresses heat pump 50 operate frequently or shut down.Therefore, the hot-water supply system 2 of the present embodiment can suppress the increase of the running of heat pump 50 or the number of times that shuts down, and can suitably prevent the pipeline forming storage tank water circulation path 20 from freezing.
Below, the corresponding relation of the content of the present embodiment and claim is described.Thermistor 11 ~ 15,24 is examples of " cooling-water temperature sensor ".In addition, the same day supplying hot water terminate predetermined instant and next day supplying hot water start the example that predetermined instant is " supplying hot water in the current one time terminates predetermined instant " and " supplying hot water in the next unit interval starts predetermined instant " respectively.In addition, the heat storage operation of carrying out in step S50 is in figure 3 an example of " preventing from freezing by heat storage operation ".
(the 2nd embodiment)
Then, with reference to Fig. 6 and Fig. 7, centered by the difference of the 2nd embodiment and the 1st embodiment, the hot-water supply system 2 of the 2nd embodiment is described.The basic structure of the hot-water supply system 2 of the present embodiment is identical with the basic structure of the hot-water supply system 2 of the 1st embodiment.But, in the present embodiment, the undertaken by controller 100 the 2nd prevent from freezing the content that processes from undertaken by controller 100 in the 1st embodiment the 2nd prevent the content freezing to process different.In the present embodiment, prevent from freezing in process the 2nd, after have passed through the same day supplying hot water terminate predetermined instant, storage tank amount of stored heat is less than the minimum carrying out preventing needed for freeze operation, namely during defined threshold, carry out corresponding heat storage operation, to make storage tank amount of stored heat reach defined threshold, this point 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, terminate predetermined instant at current time through supplying hot water, controller 100 starts to carry out the 2nd to be prevented from freezing process.The process of S70, S72 is identical with the process of S40, S42 in Fig. 3.In step S74, controller 100 calculates storage tank amount of stored heat.The computational methods of storage tank amount of stored heat are identical with utilizing the computational methods of above-mentioned formula 1.
Then, in step S76, controller 100 judges whether storage tank amount of stored heat is less than the threshold value Q of regulation.Here, in the present embodiment, the threshold value Q of regulation is the prespecified numerical value (such as 200 kilocalories) preventing the thermal discharge of freeze operation (thermal discharge hourly) often carrying out 1 hour.That is, when storage tank heat is lower than threshold value Q, then represent in storage tank 10 do not store at least carry out 1 hour prevent freeze to process needed for heat.In this case, the judged result of controller 100 in step S76 is "Yes", enters step S78 afterwards.In addition, when the numerical value of storage tank amount of stored heat is at more than defined threshold Q, the judged result of controller 100 in step S76 is "No", omits the process of step S78 ~ S84 afterwards, enters step S88.
In step S78, controller 100 controller 100 calculates the required heat that the same day, supplying hot water terminated in during predetermined instant starts predetermined instant to supplying hot water next day.Then, in step S80, controller 100 makes heat pump 50 and circulating pump 22 operate, and starts to carry out heat storage operation.Thus, water higher for the temperature heated by heat pump 50 is stored in storage tank 10.Controller 100 starts to carry out heat storage operation in step S80, enters step S82 afterwards.
In step S82, controller 100 is monitored storage tank amount of stored heat and whether is reached more than required heat.As mentioned above, by carrying out heat storage operation in step S80, can storage temperature is higher in storage tank 10 water, thus storage tank amount of stored heat is raised.As a result, when storage tank amount of stored heat reaches more than required heat, the judged result of controller 100 in step S28 is "Yes", enters step S84 afterwards.In addition, in step S82, controller 100 calculates storage tank amount of stored heat every the stipulated time.
In step S84, controller 100 makes heat pump 50 shut down, and terminates heat storage operation.In step S84, controller 100 makes circulating pump 22 remain in operation.That is, in step 84, controller 100 terminates heat storage operation, and starts to carry out preventing freeze operation.
In step S88, controller 100 makes circulating pump 22 operate, and carries out preventing freeze operation.When the judged result of above-mentioned step S76 is "No", when circulating pump in step S88 22 does not operate, controller 100 makes circulating pump 22 operate in step S88, starts to carry out preventing freeze operation.In addition, when in step S88, circulating pump 22 starts running, when carrying out 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 judges whether current time arrives supplying hot water and start predetermined instant (above-mentioned supplying hot water next day starts predetermined instant).When current time starts predetermined instant early than supplying hot water, the judged result of controller 100 in step S90 is "No", is back to step S74 afterwards, and repeats the process of step S74 ~ S90.
In addition, when repeating the process of step S74 ~ S90, the judged result in the step S76 of controller 100 after twice is "Yes", and the moment of carrying out the process of step S78 is afterwards later than supplying hot water and terminates predetermined instant.Therefore, in step S78 in this case, controller 100 calculate step S78 during moment to next day, supplying hot water started predetermined instant in proceed the heat that prevents needed for freeze operation, and using this required heat as required heat.Specifically, controller 100 is multiplied by making the time that moment to the next day of pre-set thermal discharge hourly and step S78, supplying hot water started between predetermined instant, can calculate required heat.Equally, in following step S82, more than the required heat whether storage tank amount of stored heat calculate in above-mentioned steps S78 monitored by controller 100.
In addition, at current time through supplying hot water predetermined instant, the judged result of controller 100 in step S90 is "Yes", terminates the 2nd afterwards and prevents from freezing to process (Fig. 6).In this case, controller 100 makes circulating pump 22 shut down.
In addition, in the present embodiment, prevent from freezing in the process processed carrying out the 2nd, when warm water utilizes the hot water tap of position to be opened (when having water requirements), identical with the 1st embodiment, controller 100 adjusts the aperture of mixing valve 42, to make the water in storage tank 10 not be supplied in supply passageway 40, is only supplied in supply passageway 40 by the running water importing path 30b supply by the 2nd.In this case, controller 100 makes burner heater 60 operate, and the heat that control combustion device heater 60 exports, utilize the water temperature of position consistent with supplying hot water design temperature to make being supplied to warm water.
(object lesson 2: Fig. 7)
Then, illustrate in the hot-water supply system 2 of the present embodiment that carrying out the 2nd prevents from freezing object lesson when processing with reference to Fig. 7.Supplying hot water on the same day in the example of Fig. 7 terminate predetermined instant (22:00), next day supplying hot water to start each condition such as predetermined instant (7:00), thermal discharge hourly (200 kilocalories) identical with the example of Fig. 4, Fig. 5.
In this example embodiment, the storage tank amount of stored heat calculated when 22:00 is 400 kilocalories, and this storage tank amount of stored heat is less than required heat (1800 kilocalories).But the storage tank amount of stored heat when 22:00 is greater than threshold value Q (200 kilocalories) (judged result in step S76 is in figure 6 "Yes").In this example embodiment, threshold value Q is defined as the numerical value (200 kilocalories) of thermal discharge hourly.Therefore, at this moment controller 100 waits can not carry out heat storage operation, but circulating pump 22 is operated, and makes the water circulation in storage tank 10 and in storage tank water circulation path 20, carries out preventing freeze operation (the step S88 in Fig. 6).
Afterwards, the storage tank amount of stored heat calculated when 0:00 is 0 kilocalorie, and this storage tank amount of stored heat is less than threshold value Q (judged result of the step S76 in Fig. 6 is "No").That is, when 0:00, do not store in storage tank 10 with carry out one hour prevent freeze to process needed for the corresponding heat of minimum heat.Therefore, controller 100 calculates the heat that 0:00 starts to supplying hot water next day to carry out in predetermined instant (7:00) period preventing needed for freeze operation, and using this required heat as required heat (the step S78 in Fig. 6).In this case, must heat be 1400 kilocalories (200 kilocalories × 7).Then, controller 100 starts to carry out heat storage operation (the step S80 in Fig. 6).It is that storage tank amount of stored heat is increased to 1300 kilocalories that controller 100 carries out heat storage operation to the result of 0:30, and must heat identical (judged result of the step S82 in Fig. 6 is "Yes").In this case, controller 100 makes heat pump 50 shut down, and terminates heat storage operation, and circulating pump 22 is remained in operation, start to carry out preventing freeze operation 22 (step 84 in Fig. 6).
Afterwards, controller 100 makes circulating pump 22 remain in operation, and to make the water circulation in storage tank 10 and in storage tank water circulation path 20, carries out preventing freeze operation, until next day, supplying hot water terminated predetermined instant 7:00.As a result, when 7:00, storage tank amount of stored heat just in time can be reduced to 0 kilocalorie.
Be described above structure and the action of the hot-water supply system 2 of the present embodiment.As mentioned above, the hot-water supply system 2 of the present embodiment is as shown in the step S76 in Fig. 6 ~ S82, after have passed through the same day supplying hot water terminate predetermined instant, when storage tank amount of stored heat is less than the threshold value Q carrying out preventing needed for freeze operation, controller 100 starts to carry out heat storage operation, until store enough heats in storage tank 10.By carrying out this heat storage operation, the heat (warm water) carrying out till next day, supplying hot water started predetermined instant preventing needed for freeze operation can be stored in storage tank 10.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, until next day, supplying hot water started predetermined instant.That is, in the present embodiment, heat pump 50 can be suppressed to operate frequently or shut down, and can suitably prevent the pipeline generation forming storage tank water circulation path 20 from freezing.
Below, the corresponding relation of the contents of the present embodiment and claim is described.In addition, the heat storage operation of carrying out in step S80 is in figure 6 an example of " preventing from freezing by heat storage operation ".In addition, the heat of threshold value Q is an example of " regulation heat ".
(the 3rd embodiment)
Then, with reference to Fig. 8, centered by the difference of the 3rd embodiment and the 2nd embodiment, the hot-water supply system 2 of the 3rd embodiment is described.In the hot-water supply system 2 of the present embodiment, what controller 100 carried out the 2nd prevents from freezing process and prevents from freezing to process identical (Fig. 6) with the carry out in the 2nd embodiment the 2nd.But, in the present embodiment, prevent from freezing in the process processed, when warm water utilizes the hot water tap of position to be opened (when having water requirements) carrying out the 2nd, controller 100 adjusts the aperture of mixing valve 42, is supplied in supply passageway 40 to make the water in storage tank 10.In this case, the heat that controller 100 is exported by the aperture and burner heater 60 controlling mixing valve 42, to make the temperature of the water supplied by storage tank 10 consistent with supplying hot water design temperature.In the present embodiment, prevent from freezing in the process processed carrying out the 2nd, when carrying out supplying hot water operation, utilize position because the warm water in storage tank 10 is fed into warm water, thus storage tank amount of stored heat reduces because supplying hot water operation.
(object lesson 3: Fig. 8)
Then, with reference to Fig. 8, illustrate and carry out the object lesson that the 2nd prevents from freezing situation about processing in the hot-water supply system 2 of the present embodiment.Supplying hot water on the same day in the example of Fig. 8 terminate predetermined instant (22:00), next day supplying hot water to start each condition such as predetermined instant (7:00) and thermal discharge hourly (200 kilocalories) identical with the example of Fig. 4, Fig. 5 and Fig. 7.
In this example embodiment, the storage tank amount of stored heat calculated when 22:00 is 4200 kilocalories, and this amount of stored heat is greater than required heat (1800 kilocalories).Certainly, storage tank amount of stored heat is also greater than threshold value Q (200 kilocalories) (judged result of the step S76 in Fig. 6 is "Yes").Therefore, at this moment controller 100 is waited and is not carried out heat storage operation, but circulating pump 22 is operated, and makes the water circulation in storage tank 10 and in storage tank water circulation path 20, starts to carry out preventing freeze operation (the step S88 in Fig. 6).
In this example embodiment, start to carry out supplying hot water operation between 2:00 ~ 3:00.In the present embodiment, when when carrying out the 2nd and preventing from carrying out supplying hot water operation in the process freezing to process, the warm water in storage tank 10 is fed into warm water and utilizes position.Therefore, as shown in Figure 8, the storage tank amount of stored heat between 2:00 ~ 3:00 significantly reduces.The storage tank amount of stored heat calculated when 3:00 is 320 kilocalories, and this amount of stored heat is greater than threshold value Q (200 kilocalories) (judged result of step S76 is in figure 6 "Yes").Therefore, controller 100 proceeds to prevent freeze operation (the step S88 in Fig. 6).In addition, the storage tank amount of stored heat calculated when 3:05 is increased to 400 kilocalories from the storage tank amount of stored heat (320 kilocalories) calculated when 3:00, meanwhile, by making circulating pump 22 operate, the distribution of water temperature in storage tank 10 and in storage tank water circulation path 20 can be made to reach even.
Afterwards, the storage tank amount of stored heat calculated when 5:00 is 0 kilocalorie, and this storage tank amount of stored heat is less than threshold value Q (judged result of step S76 is in figure 6 "No").That is, the minimum regulatory heat carrying out preventing needed for freeze operation is not stored in storage tank 10 when 5:00.Therefore, controller 100 calculates in during 5:00 starts predetermined instant (7:00) to supplying hot water next day the heat carrying out preventing needed for freeze operation, and using this required heat as required heat (step S78).In this case, must heat be 400 kilocalories (200 kilocalories × 2).Then, controller 100 carries out heat storage operation (the step S80 in Fig. 6).It is that storage tank amount of stored heat is increased to 400 kilocalories that controller 100 carries out heat storage operation to the result of 5:10, and must heat identical (judged result of step S82 is in figure 6 "Yes").In this case, controller 100 makes heat pump 50 shut down, and terminates heat storage operation, and circulating pump 22 is remained in operation, start to carry out preventing freeze operation 22 (in Fig. 6 step S84).
Afterwards, controller 100 makes circulating pump 22 remain in operation, and to make the water circulation in storage tank 10 and in storage tank water circulation path 20, starts to carry out preventing freeze operation, until next day, supplying hot water started the 7:00 of predetermined instant.As a result, when 7:00, storage tank amount of stored heat is just in time reduced to 0 kilocalorie.
Be described above structure and the action of the hot-water supply system 2 of the present embodiment.After have passed through the same day supplying hot water terminates predetermined instant, when storage tank amount of stored heat is less than the lowest threshold Q carrying out preventing needed for freeze operation, the hot-water supply system 2 of the present embodiment starts to carry out heat storage operation.Therefore, the hot-water supply system 2 of the present embodiment prevents in the process freezing to process carrying out the 2nd, even if the warm water in storage tank 10 to be used for supplying hot water operation, when result causes the shortage of heat in storage tank 10, controller 100 also can carry out heat storage operation when the shortage of heat in storage tank 10.Therefore, when adopting the hot-water supply system 2 of the present embodiment, regardless of the warm water utilization obstacle in storage tank 10, all required heat can be guaranteed.
Although understand each embodiment in detail above, the various embodiments described above are example, the restriction not to claims of the present invention.Also various distortion that above-mentioned object lesson is carried out and the content after changing is comprised in technology described in claims.
(variation 1) is in the 3rd embodiment, when have passed through the same day supplying hot water terminating predetermined instant, storage tank amount of stored heat is less than in during supplying hot water moment to next day terminating predetermined instant through (being later than) supplying hot water on the same day starts predetermined instant (7:00) when carrying out preventing the heat needed for freeze operation (required heat), controller can carry out heat storage operation, until storage tank amount of stored heat is greater than required heat.
(variation 2) is in the various embodiments described above, carrying out the 2nd at controller 100 prevents in the process freezing to process, when outside air temperature (temperature detected by temperature sensor 52) is more than 6 DEG C, controller 100 can terminate the 2nd to be prevented from freezing process.
The numerical value of (variation 3) threshold value Q, the numerical value of minimum amount of stored heat etc. and various numerical value are not limited to the example of the various embodiments described above, the difference environmentally waited, can be set to any number by the numerical value of the numerical value of threshold value Q, minimum amount of stored heat etc. and various numerical value.
Claims (3)
1. a hot-water supply system, is characterized in that,
There is storage tank, storage tank water circulation path, heat pump, external temperature sensor, cooling-water temperature sensor and controller, wherein,
Storage tank is supplied to for storing the water that warm water utilizes position;
Storage tank water circulation path imports the water in storage tank, and makes imported water be back in storage tank;
Heat pump absorbs heat from extraneous air, heats the water in storage tank water circulation path;
External temperature sensor is for detecting outside air temperature;
Cooling-water temperature sensor for detecting the water temperature in each portion in storage tank,
Controller is based on the actual conditions in past, and start predetermined instant and supplying hot water to the supplying hot water in the unit interval and terminate predetermined instant and determine, wherein, it is the start time supplying warm water at first that supplying hot water starts predetermined instant; Supplying hot water terminates predetermined instant and is later than supplying hot water and starts predetermined instant, and it is the finish time finally supplying warm water that this supplying hot water terminates predetermined instant,
Controller, based on the water temperature in portion each in storage tank, calculates the heat be stored in storage tank,
Supplying hot water within the current one time terminate predetermined instant after outside air temperature lower than set point of temperature time, controller makes heat pump shut down, and makes the water circulation in storage tank water circulation path, carries out preventing freeze operation,
After supplying hot water within the current one time terminates predetermined instant, before starting predetermined instant to the supplying hot water in the next unit interval, in order to carry out preventing freeze operation, need in storage tank, store enough heats, before reaching enough heat, what controller carried out heat pump is operated prevents from freezing to use heat storage operation.
2. hot-water supply system according to claim 1, is characterized in that,
Controller, after have passed through the supplying hot water in the current one time and terminating predetermined instant, prevents from freezing to use heat storage operation described in carrying out immediately.
3. hot-water supply system according to claim 1 and 2, is characterized in that,
When the heat in storage tank is less than the minimum regulatory heat carrying out preventing needed for freeze operation, prevent from freezing to use heat storage operation described in controller carries out.
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 true CN104797890A (en) | 2015-07-22 |
| CN104797890B CN104797890B (en) | 2017-04-26 |
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| 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) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107560161A (en) * | 2016-07-01 | 2018-01-09 | 林内株式会社 | Heating agent EGR |
| 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 |
| CN111594902A (en) * | 2020-06-02 | 2020-08-28 | 宁波奥克斯电气股份有限公司 | Anti-freezing method and floor heating system |
Families Citing this family (10)
| 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 |
| 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 |
| 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 |
| AU2022216916B2 (en) * | 2021-02-07 | 2024-05-16 | Octopus Energy Heating Limited | Methods and systems for performing a heat pump defrost cycle |
| CN117581065A (en) * | 2021-02-07 | 2024-02-20 | 八达通能源供暖有限公司 | Method and system 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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- 2012-12-04 JP JP2012265363A patent/JP5699120B2/en active Active
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2013
- 2013-08-07 WO PCT/JP2013/071407 patent/WO2014087701A1/en active Application Filing
- 2013-08-07 CN CN201380059919.1A patent/CN104797890B/en not_active Expired - Fee Related
- 2013-08-07 KR KR1020157011438A patent/KR101572439B1/en not_active IP Right Cessation
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| JPH1163661A (en) * | 1997-08-08 | 1999-03-05 | Daikin Ind Ltd | Heat pump hot water supplier |
| JP2004257583A (en) * | 2003-02-24 | 2004-09-16 | Matsushita Electric Ind Co Ltd | Storage water heater |
| 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 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107560161A (en) * | 2016-07-01 | 2018-01-09 | 林内株式会社 | Heating agent EGR |
| 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 |
| CN111594902A (en) * | 2020-06-02 | 2020-08-28 | 宁波奥克斯电气股份有限公司 | Anti-freezing method and floor heating system |
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2014109422A (en) | 2014-06-12 |
| KR101572439B1 (en) | 2015-11-27 |
| JP5699120B2 (en) | 2015-04-08 |
| CN104797890B (en) | 2017-04-26 |
| WO2014087701A1 (en) | 2014-06-12 |
| KR20150065818A (en) | 2015-06-15 |
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