CN102016439A - Heat pump water heater - Google Patents
Heat pump water heater Download PDFInfo
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- CN102016439A CN102016439A CN2008801287228A CN200880128722A CN102016439A CN 102016439 A CN102016439 A CN 102016439A CN 2008801287228 A CN2008801287228 A CN 2008801287228A CN 200880128722 A CN200880128722 A CN 200880128722A CN 102016439 A CN102016439 A CN 102016439A
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- hot water
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- water
- bathtub
- hot
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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
- F24D17/0078—Recirculation systems
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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
- F24D17/02—Domestic hot-water supply systems using heat pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
- F24H1/54—Water heaters for bathtubs or pools; Water heaters for reheating the water in bathtubs or pools
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- Engineering & Computer Science (AREA)
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- 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
A heat pump water heater includes, to secure heating ability, improve heating efficiency and save energy for totally optimum operation control for a period including a winter defrosting time, a heat pump refrigerant circuit (30) having a compressor, a water refrigerant heat exchanger, an expansion valve and an air refrigerant heat exchanger, a hot water supply circuit (40) having a hot water reservoir tank, an internal circulation pump, a hot water supply mixing valve, a bath heat exchanger, a bath circulation pump and a hot water and water mixing valve for performing hot water storage in a tank, direct supply of hot water from the water refrigerant heat exchanger, hot water supply from the tank, filling a bathtub and additional heating of the bath and an operation control part (50) for performing an operation of hot water storage, an operation of directly supplying hot water, an operation of supplying hot water from the tank, an operation of filling the bathtub and an operation of additionally heating the bath by the operation setting of a hot water outlet remote controller (51) and a bathroom remote controller (52). The operation control part performs the optimum operation control for selecting one of three kinds of operating means including a heating efficiency prioritized operation, a heating ability prioritized operation and an intermediate defrosting operation based on an ambient temperature, an air refrigerant heat exchanger temperature and a hot water supply and storage mode as determination standard.
Description
Technical field
The present invention relates to Teat pump boiler, relate in particular to comprise the frosting phase during in the optimum operation control of heat pump.
Background technology
Existing Teat pump boiler, generally be similarly to be provided with jumbo hot-water storage jar with the electrical heat hydrophone, use the cheap electric power of discounted cost at night to carry out the heat pump running, at midnight hot water is boiled, be stored in the hot-water storage jar, use the Teat pump boiler of the hot-water storage type of the hot water of being stored by day.
Relative therewith, develop in recent years on the daytime of mainly supplying with the hot water use and also carry out the heat pump running, directly supply with the warm water after heating, realized the moment formula Teat pump boiler of the miniaturization significantly of hot-water storage jar thus.For example there is disclosed example in the patent documentation 1 in conventional example as this formula Teat pump boiler moment.
According to this patent documentation 1, carry out the hot-water storage running in advance, in the small-sized hot water hold-up tank of 60～100L, stored hot water, when using hot water, running at the heating-up temperature no show proper temperature of heat pump is initial, the high-temperature water of sneaking in the hot water that adds at heat pump from the hot-water storage jar, reach proper temperature and supply with hot water, when making heating-up temperature reach proper temperature by the heat pump running, stop the hot water supply from the hot-water storage jar, the water of directly supplying with by the proper temperature after the heat pump running heating uses.
In addition, the moment running of formula Teat pump boiler is controlled, corresponding to water pot hot-water storage or kitchen/washroom hot water supply, the rotating speed that changes compressor is adjusted heating efficiency, the defrosting of air refrigerant heat exchanger (evaporimeter) is according to the temperature detection frosting degree of air refrigerant heat exchanger, after the heating properties of a large amount of frostings, heat pump reduces, opening the defrosting by-passing valve and defrost, all is simpler structure.
Patent documentation 1:JP spy opens the 2003-279133 communique
As disclosed in the above-mentioned patent documentation 1, in existing Teat pump boiler, change the rotating speed of compressor substantially corresponding to the hot water supply purposes, adjust heating efficiency.But along with Teat pump boiler is popularized, use expands to a plurality of branches in recent years, and it is complicated that the hot water supply temperature also becomes.For example about bathtub hot water implantation temperature, not long ago supplied with hot water in balneation in the past, therefore the hot water supply temperature is constant approximately is 42 ℃, and the function of additional prior pre-set hot water injection length, just need to supply with 45 ℃ of high slightly hot water, appended function simultaneously so that can be according to selecting 38 ℃～48 ℃ hot water supply temperature season.
In addition, also obtained variation about water pot hot-water storage temperature,, carried out storing hot water with about 65 ℃ in the intergrade in summer, spring and autumn corresponding to the seasonal variations of hot water supply use amount, store hot water with 70～75 ℃ in the winter time, store settings such as hot water with 85～90 ℃ during low temperature in the winter time.
At these diversified hot water supply behaviours in service, the running of heat pump control is attached most importance to guarantee the hot water supply amount, controls in the preferential mode of heating efficiency corresponding to each hot water supply temperature, may not become optimum operation control from energy-conservation viewpoint.For example,, but need like that under the situation of big hot water supply amount, compare with efficient and must make heating efficiency preferential in shower even the elongated efficiency of heating surface that also can make of hot water injection length is preferential bathtub hot water being injected running when carrying out time reservation.In addition, in the winter time, when making continuous running preferential, the heating efficiency that is caused by frosting when supplying with hot water for a long time reduces and becomes problem, when detection air refrigerant heat exchanger temperature enters the defrosting running, exist in the kitchen hot water supply process or begin to defrost in the process that washes one's face and stop to supply with the problem of hot water, require at present, taken all factors into consideration the necessity of the optimum operation control mode of heating efficiency, energy-conservation, defrosting control etc. at these diversified service conditions.
Summary of the invention
The objective of the invention is to address these problems, provide a kind of when comprising winter frost removing during in realize the raising of the guaranteeing of heating efficiency, the efficiency of heating surface and energy-conservation, the Teat pump boiler that synthetically carries out optimum operation control.
In order to solve described problem, the present invention mainly adopts following structure.
A kind of Teat pump boiler possesses: heat pump refrigerant loop, air refrigerant heat exchanger and coolant piping that it has the compressor of compression refrigerant, the cool water media heat exchanger that carries out the heat exchange of water and refrigerant, expansion valve, carries out the heat exchange of air and refrigerant; The hot water supply loop, it has stores the hot-water storage jar that has by the warm water after the described cool water media heat exchanger heats, the machine internal circulation pump, the hot water supply mixing valve, carry out bathtub heat exchanger with heat exchange by the warm water after the described cool water media heat exchanger heats, bathtub circulation pump, water mixing valve, sparge pipe, this hot water supply loop forms: the hot-water storage loop of storing high-temperature water in described hot-water storage jar, to going out the direct direct hot water supply circuit of supplying with by the warm water after the described cool water media heat exchanger heats in hot water position, to going out the water pot hot water supply loop of hot water position supply from the warm water of described hot-water storage jar, use pump to the bathtub hot water infusion circuit of bathtub supply by described bathtub circulation by the warm water after the described cool water media heat exchanger heats, supply with from described bathtub with the bathtub of the warm water of heat exchanger heating circuit again to bathtub with pump by the circulation of described bathtub; And operation control section, it is by going out the operating and setting of hot water position remote controller and bathtub remote controller, control each inscape and carry out the hot-water storage running, direct hot water supplying operation, water pot hot water supply running, bathtub hot water injects running, bathtub adds heat run again, in the described Teat pump boiler, described operation control section, environment temperature with Teat pump boiler, the temperature of described air refrigerant heat exchanger, and comprise to water pot storage hot water, supply with hot water to going out the hot water position, bathtub hot water injects, hot water supply in the running more than the scheduled time is carried out optimum operation control in interior hot water supply/hot-water storage pattern as determinating reference, and this optimum operation control is used to judge that the efficiency of heating surface preferentially turns round, heating efficiency preferentially turns round, some in middle these 3 kinds of drive manners of defrosting running.
In addition, in described Teat pump boiler, described operation control section, reach maximum compressor rotary speed running with the efficiency of heating surface when being judged to be the described efficiency of heating surface when preferentially turning round, reach maximum compressor rotary speed running with heating efficiency when being judged to be described heating efficiency when preferentially turning round, when being judged to be the running that defrosts after reaching maximum compressor rotary speed running during the defrosting running with heating efficiency in the middle of described and passing through time of about 1/2 of heat pump duration of runs of being inferred.And described operation control section, as described determinating reference, described environment temperature is divided into approximately+more than 7 ℃ or approximately below-7 ℃, peace treaty-7 ℃～+ 7 ℃ at least more than two parts.
In addition, in described Teat pump boiler, described operation control section as described determinating reference, is divided into described air refrigerant heat exchanger temperature about more than 0 ℃ and less than about 0 ℃ of these two parts.And described operation control section as described determinating reference, at each hot water supply pattern learning heat pump duration of runs, is being inferred under the situation that be about hot water supply pattern more than 60 minutes the duration of runs, and the defrosting running is controlled as optimum operation in the middle of judging.And described operation control section is judged in the frosting of carrying out described air refrigerant heat exchanger after heat run finishes that adds of heat pump running, when being judged to be frosting, the running that defrosts stops the heat pump running then, when being judged to be not frosting, the running ground that do not defrost stops the heat pump running.
According to the present invention, can judge the optimum operation of the service condition that has taken into full account Teat pump boiler, realize the raising of the guaranteeing of heating efficiency, the efficiency of heating surface and energy-conservation in the time of can comprising winter frost removing, synthetically select best drive manner.
In addition, by more specifically the determinating reference and the efficiency of heating surface of specified in more detail optimum operation mode preferentially turn round, heating efficiency preferentially turns round, middle these 3 kinds of drive manners of defrosting running, can be further when realizing optimum operation mode selected, carry out commercialization easily.
In addition, frosting when detecting the running end, the running that only defrosts when frosting is arranged shuts down then, therefore, when beginning, the running next time can not have entry into service under the state of frosting, the raising of the heat temperature raising characteristic in the time of can realizing turning round beginning, and, externally can prevent that the frosting of turning round when finishing from increasing under the condition such as the low or snowfall of air themperature in stopping period.
According to the record of the following embodiments of the invention relevant, can understand other purpose of the present invention, feature and advantage with accompanying drawing.
Description of drawings
Fig. 1 is the inscape of Teat pump boiler of expression embodiments of the present invention and the overall structure figure of access path.
Fig. 2 is the flow chart of flow process Teat pump boiler, the running of the hot water supply when opening kitchen faucet and using hot water of expression embodiments of the present invention.
Fig. 3 is the chart of the relation of the heating efficiency in the general Teat pump boiler of expression and the efficiency of heating surface.
Fig. 4 is the decision condition of the optimum operation mode in the Teat pump boiler of expression decision present embodiment and the table of determinating reference.
Fig. 5 is the chart that changes the time of the heating efficiency under the situation about turning round continuously the winter in the general Teat pump boiler of expression.
Fig. 6 is in the Teat pump boiler of expression present embodiment, infers the key diagram of the comparison that adds heat of continuous running under the situation of hot water supply time long (for example 70 minutes) and middle defrosting running in the winter time.
Fig. 7 is in the Teat pump boiler of expression present embodiment, infers the key diagram of the comparison that adds heat of continuous running under the situation of hot water supply time short (for example 50 minutes) and middle defrosting running in the winter time.
The specific embodiment
Below, describe the Teat pump boiler of embodiments of the present invention in detail with reference to Fig. 1～Fig. 7.Fig. 1 is the inscape of Teat pump boiler of expression embodiments of the present invention and the overall structure figure of access path.In Fig. 1, the Teat pump boiler of present embodiment is made of heat pump refrigerant loop 30, hot water supply loop 40 and running control module 50 as a whole.
Heat pump refrigerant loop 30 constitutes with two endless form of the first refrigerant loop 30a and the second refrigerant loop 30b, connect successively and constitute via refrigerant side heat- transfer pipe 2a, 2b, expansion valve 3a, 3b, air refrigerant heat exchanger 4a, the 4b of coolant piping respectively, enclosed refrigerant therein compressor 1a, 1b, configuration in cool water media heat exchanger 2.
The fast electric expansion valve of response when generally using aperture to adjust as expansion valve 3a, 3b reduces pressure to the middle temperature high pressure refrigerant that transports via cool water media heat exchanger 2, carries to air refrigerant heat exchanger 4a, 4b as the low pressure refrigerant of easy evaporation.In addition, expansion valve 3a, 3b play the effect that the aperture that changes coolant path is regulated the refrigerant circulation in the heat pump refrigerant loop, also carry out to increase aperture the task that warm refrigerant dissolves the defroster of frost in a large amount of conveyings of air refrigerant heat exchanger 4a, 4b.
Air refrigerant heat exchanger 4a, 4b are taken into extraneous air by the rotation of Air Blast fan 5a, 5b, carry out the heat exchange of air and refrigerant, carry out the task of absorbing heat from extraneous air.Hot water supply loop 40 possesses the water-flow circuit that is used to carry out following action: (1) hot-water storage, (2) directly hot water supply, (3) water pot hot water supply, (4) bathtub hot water inject, (5) bathtub heats again.
Hot-water storage loop (1) is to be used for by water pot boiling running, in hot-water storage jar 16, store the water loop of high-temperature water, hot-water storage jar 16, machine internal circulation pump 17, hydro-thermal of ac sensor 10, water supply side heat- transfer pipe 2c, 2d, hot water supply mixing valve 11, hot-water storage jar 16 are connected successively and constitute via sparge pipe.
Direct hot water supply circuit (2) goes out hot water metal parts 14 via sparge pipe with water supply metal parts 6, pressure-reducing valve 7, water-supply quantity sensor 8, water supply side check-valves 9, hydro-thermal of ac sensor 10, water supply side heat- transfer pipe 2c, 2d, hot water supply mixing valve 11, water mixing valve 12, flow rate regulating valve 13, kitchen and connects successively and constitute.Water supply metal parts 6 is connected with waterings such as water pipes, and the kitchen goes out hot water metal parts 14 and is connected with kitchen faucet 15 grades.
Water pot hot water supply loop (3) goes out hot water metal parts 14 via sparge pipe with water supply metal parts 6, pressure-reducing valve 7, water-supply quantity sensor 8, water supply side check-valves 9, hot-water storage jar 16, hot water supply mixing valve 11, water mixing valve 12, flow rate regulating valve 13, kitchen and connects successively and constitute.
Bathtub hot water infusion circuit (4) connects water supply metal parts 6, pressure-reducing valve 7, water-supply quantity sensor 8, water supply side check-valves 9, hydro-thermal of ac sensor 10, water supply side heat- transfer pipe 2c, 2d, hot water supply mixing valve 11, water mixing valve 12, flow rate regulating valve 13, bathtub hot water injection valve 18, flow switch 19, bathtub circulating pump 20, level sensor 21, bathtub hot water input and output metal parts 22, bathtub loop adapter 23, bathtub 24 successively and constitutes via sparge pipe.In addition, be connected with bathtub 24, also be connected simultaneously, so that supply with hot water to it with bathtub tap 25 or shower (not shown) from bathtub hot water input and output metal parts 22.When bathtub hot water injected, in the time of with the direct hot water supply of bathtub hot water infusion circuit, the hot water amount in hot-water storage jar 16 did not reach in the scope below the minimum necessary amount and carries out from the water pot hot water supply of hot-water storage jar 16 to bathtub 24 yet.
Bathtub is heating circuit (5) again, via sparge pipe bathtub 24, bathtub loop adapter 23, bathtub hot water input and output metal parts 22, level sensor 21, bathtub circulating pump 20, flow switch 19, bathtub is gone out hot water metal parts 26, bathtub loop adapter 23, bathtub 24 with bathtub heat transfer water pipe 27b, the bathtub of heat exchanger 27 and connects successively and constitute.When bathtub heats again, when the water of the bathtub water of heating circuit (5) circulates again with bathtub, running of running heat pump and machine internal circulation pump 17, and open warm water open and close valve 28, make and to circulate among the warm water heat-transfer pipe 27a of setting at bathtub with heat exchanger 27 by the warm water after 2 heating of cool water media heat exchanger, between warm water heat-transfer pipe 27a and bathtub heat transfer water pipe 27b, carry out heat exchange, carry out bathtub and heat again.
Then, running control module 50, (be not limited to the kitchen by kitchen remote controller 51, washroom etc. go out the remote controller at hot water place) and the operating and setting of bathtub remote controller 52, carry out the running in heat pump refrigerant loop 30/stop and compressor 1a, the rotating speed control of 1b, simultaneously by control expansion valve 3a, the refrigerant aperture of 3b is adjusted, machine internal circulation pump 17, the running of bathtub circulating pump 20/stop and hot water supply mixing valve 11, water mixing valve 12, flow rate regulating valve 13, bathtub hot water injection valve 18, warm water open and close valve 28 carries out the hot-water storage running, direct hot water supplying operation, water pot hot water supply running, bathtub hot water injects running, bathtub adds heat run again.
In addition, the rotating speed of running control module 50 control compressor 1a, 1b, when the running beginning, slowly increase rotating speed, in order to shorten the heat temperature raising time with predetermined high rotation speed operation, but under the situation of the such common load of washroom, kitchen hot water supply (about 42 ℃), after running is stable, return the middling speed running, and when the big hot-water storage of thermic load turns round (about 65～90 ℃), be controlled to be comparison running at a high speed.
And, in Teat pump boiler, be provided with: be used to detect the water pot thermistor 16a～16e of the hot-water storage temperature of hot-water storage jar 16 or hot-water storage amount, the environment temperature thermistor (not shown) that detects environment temperature, the air heat that detects the temperature of air refrigerant heat exchanger hand over thermistor and detect the thermistor (not shown) of the temperature of each one or detect the discharge pressure of compressor 1a, 1b pressure sensor (not shown), detect the level sensor 21 of the water level in the bathtub 24 etc., each detection signal is input to the control module 50 that turns round.Running control module 50 is according to each equipment of these signal controlling.
In addition, hot water supply mixing valve 11, initial in the hot water supply running, open simultaneously between cool water media heat exchanger 2 sides and water mixing valve 12 sides and between hot-water storage jar 16 sides and water mixing valve 12 sides, supply with hot water from cool water media heat exchanger 2 and hot-water storage jar 16 both sides, when the heating-up temperature of the cool water media heat exchanger 2 by heat pump reaches hot water supply temperature (about 42 ℃), to close between hot-water storage jar 16 sides and water mixing valve 12 sides, only supply with hot water from cool water media heat exchanger 2.
In addition, warm water open and close valve 28 is set at cool water media heat exchanger 2 and bathtub is used between the heat exchanger 27, when heating again, opens by bathtub, carry out bathtub and add heat run again, close water loop in the time in addition, be used to prevent from cool water media heat exchanger 2 to the leakage of bathtub with the heat of heat exchanger 27.In addition, water supply side check-valves 9 only flows through water in a direction, anti-backflow.
Then, with reference to heat pump refrigerant loop 30 and the hot water supply loop 40 of Fig. 1, the running action of the Teat pump boiler of present embodiment is described according to the hot water supply run chart of Fig. 2.Fig. 2 is the flow chart of flow process in the Teat pump boiler of expression embodiments of the present invention, the running of the hot water supply when opening kitchen faucet and using hot water.
When opening kitchen faucet 15 and bring into use hot water (step 61), detection by water-supply quantity sensor 8, running control module 50 makes compressor 1a, the 1b running, the running in the refrigerant loop 30 of beginning heat pump is simultaneously by water supply metal parts 6, pressure-reducing valve 7, water-supply quantity sensor 8, water supply side check-valves 9, hydro-thermal of ac sensor 10, water supply side heat- transfer pipe 2c, 2d, hot water supply mixing valve 11, water mixing valve 12, flow rate regulating valve 13, the kitchen goes out hot water metal parts 14, the direct hot water supply circuit of kitchen faucet 15 begins direct hot water supplying operation (step 62).Simultaneously, go out the water pot hot water supply loop of hot water metal parts 14, kitchen faucet 15 by water supply metal parts 6, pressure-reducing valve 7, water-supply quantity sensor 8, water supply side check-valves 9, hot-water storage jar 16, hot water supply mixing valve 11, water mixing valve 12, flow rate regulating valve 13, kitchen, beginning water pot hot water supply running (step 63).
At this, heat pump refrigerant loop 30 is passing through compressor 1a, 1b compression and the HTHP refrigerant send into the refrigerant side heat-transfer pipe 2a of cool water media heat exchanger 2,2b, heating is at water supply side heat-transfer pipe 2c, behind the water that flows among the 2d, it is circulated to hot water supply mixing valve 11 sides, but after running during soon intensification, the refrigerant that is sent to cool water media heat exchanger 2 high pressure that do not reach a high temperature fully, temperature is lower, and cool water media heat exchanger 2 whole coolings, therefore the heating efficiency that water is heated is not enough, therefore needs to supply with the water pot hot water supply (step 63) from the high-temperature water of hot-water storage jar 16.Along with the process of time, refrigerant becomes HTHP, and therefore, the increasing from the thermal discharge of refrigerant of generation constantly increases the heating efficiency of water.
Before reaching the proper temperature state, the heating efficiency of heat pump running needs several minutes, therefore, running control module 50 from running beginning till reaching the proper temperature state during make compressor 1a, 1b rotating ratio just often at a high speed, carry out simultaneously supplying with the water pot hot water supply running (step 63) of high-temperature water concurrently, supply with the water of proper temperature from kitchen faucet 15 from hot-water storage jar 16.In addition, carry out the heating-up temperature of heat pump running and judge (step 64), if do not arrive set point of temperature, then continue the parallel running of direct hot water supply and water pot hot water supply, if reach more than the set point of temperature, then stop water pot hot water and supply water (step 65), continue to supply with hot water (step 66) by the individual operation of direct hot water supply.
In addition, running control module 50, when the mixed hot water temperature behind the hot water supply mixing valve 11 is more much lower than proper temperature, increase water pot hot water supply amount, and make 11 actions of hot water supply mixing valve, so that along with roughly reducing water pot hot water supply amount, adjust flow proportional and reach proper temperature near proper temperature.And then, when being higher than proper temperature, also can adjust to the hot water supply temperature of using terminal by adjusting output from water mixing valve 12 by the mixed hot water temperature behind the hot water supply mixing valve 11.
Therefore, the task of hot-water storage jar 16 is, auxiliary when making intensification before the hot water supply temperature reaches enough temperature as the heating efficiency of heat pump running, the output of the ability in heat pump refrigerant loop 30, particularly compressor 1a, 1b is big more, can shorten the heating-up time more, reduce the capacity of hot-water storage jar 16.In addition, in the hot water supply of kitchen, to carry out bathtub hot water injection etc. and use many places the time like that in order only to deal with by direct hot water supply, the capacity of compressor 1a, 1b, about 5kW with respect to general use in existing hot-water storage type, wish to increase to about 20kW, but not only need to develop new compressor, each parts in heat pump refrigerant loop 30 also need new research, and are extremely difficult.
Therefore, in embodiments of the present invention, make double-circulating heat pump mode 30a, the 30b of the compressor about the twice of having used two existing compressors, the utilization and the actual reliability of prior art have been guaranteed, as long as the capacity of compressor is enough, even application/effect of the present invention does not have difference yet in the single circulating heat pump mode.
Then, when when the running warm and when becoming the individual operation of direct hot water supply when (step 66), according to the temperature of environment temperature (external air temperature), air refrigerant heat exchanger 4a, 4b and hot water supply pattern (among Fig. 2, the kitchen hot water supply), carries out the judgement (step 68) of optimum operation mode as the determinating reference of critical item (step 67).
Judgement (step 68) by the optimum operation mode, when being judged to be mode A, be made as the efficiency of heating surface preferentially turn round (step 69), when being judged to be mode B, be made as heating efficiency preferentially turn round (step 70), when being judged to be mode C, defrosting running in the middle of being made as (narration in the back, running defrosts in the process of hot water supply running) continues direct hot water supplying operation (step 71).
After this, when hot water uses end (step 72), stop direct hot water supply (step 73), carry out the frosting of air refrigerant heat exchanger 4a, 4b simultaneously and judge (step 74), when being judged to be frosting (for example temperature is judged to be frosting in time below 0 ℃ around) running (step 75) defrosts, stop heat pump running (step 76) then, when being judged to be not frosting, the running ground that do not defrost stops heat pump running (step 76).
The content of the determinating reference of optimum operation control mode of Teat pump boiler of present embodiment and optimum operation mode A, B, C then, is described with reference to Fig. 3 and Fig. 4.Fig. 3 is the chart of the relation of the heating efficiency of the general Teat pump boiler of expression and the efficiency of heating surface.Fig. 4 is the decision condition of optimum operation mode of Teat pump boiler of expression decision present embodiment and the table of determinating reference.
Heating efficiency when Fig. 3 represents the heat pump running and the relation of the efficiency of heating surface, line chart A represents the situation of kitchen hot water supply (about 42 ℃), line chart B represents that the water pot hot-water storage is (to water pot supply hot water, described hot-water storage loop (1)) situation of (about 65 ℃), be illustrated under certain hot water supply temperature, heating efficiency is high more, and the efficiency of heating surface is low more.This is because in order to increase heating efficiency, the rotating speed that improves compressor carries out high speed rotation, so the mechanical loss of compressor increases and cause, with in automobile with respect to common speed, the reduction of the fuel utilization ratio of gasoline is same when running at high speed.
The line chart A of Fig. 3, in certain condition, for example when 17 ℃ of 16 ℃ of environment temperatures, supply water temperature, in order to be heated to kitchen hot water supply temperature (about 42 ℃) more than certain flow (for example 5L/ minute), minimum heating efficiency Amin is necessary.Then, when from heating efficiency Amin increase heating efficiency, the efficiency of heating surface reduces gradually, reaches heating efficiency maximum point Amax.Line chart B and line chart A are under identical conditions, when carrying out water pot hot-water storage running (running in described hot-water storage loop (1)), in order to be heated to water pot hot-water storage temperature (about 65 ℃), minimum heating efficiency Bmin is necessary, when from heating efficiency Bmin increase heating efficiency, the efficiency of heating surface reduces gradually, reaches heating efficiency maximum point Bmax.In addition, heating efficiency maximum point Amax, Bmax are also different according to the heating efficiency of heat pump and hot water supply temperature, hot water supply flow etc.
By line chart A and line chart B as can be known, under identical conditions, the big more heating efficiency of the high more needs of hot water supply temperature, therefore when improving heating efficiency similarly, the efficiency of heating surface reduces when the hot water supply temperature is high.
Then, an example of expression optimum operation mode determinating reference in Fig. 4.As operating condition, these three projects of environment temperature (external air temperature), air refrigerant heat exchanger temperature and hot water supply pattern are set.Environment temperature is divided into because temperature height or absolute humidity are low, therefore hardly frosting+more than 7 ℃ or below-7 ℃, with-7 ℃～+ 7 ℃ of easy frosting, air refrigerant heat exchanger temperature is divided into more than 0 ℃ and less than 0 ℃ (if heat exchanger temperature more than 0 ℃, then frost is difficult to adhere to).On the other hand, hot water supply mode division is: the hot water supply pattern more than 60 minutes that water pot hot-water storage, the hot water supply of washroom, kitchen, the injection of bathtub hot water, shower and each pattern are common.At each hot water supply pattern of being divided, division corresponding to environment temperature and air refrigerant heat exchanger temperature, stipulated the optimum operation mode, by using these conditions, as the optimum operation mode, judge A (efficiency of heating surface preferentially turns round), B (heating efficiency preferentially turns round), C (middle defrosting running).
Environment temperature is divided into two stages of temperature province with the temperature province of easy frosting of frost-free, but be not limited thereto, also can be further divided into two stages to the zone of easy frosting-7 ℃～+ 7 ℃, for example be divided into the temperature province in-2 ℃～+ 3 ℃ of the easiest frosting and-7 ℃～+ 7 ℃ scopes except this zone, be divided into 3 zones altogether, under-2 ℃～+ 3 ℃ situation, may be controlled to the aperture of further opening expansion valve and defrost.
In example shown in Figure 4, divide water pot hot-water storage running with 150L, the difference when having inferred high-boiling (about 80 ℃～90 ℃) in the winter time before and after 60 minutes, according to the heating efficiency of heat pump etc., division capacity difference.In addition, hot water inject, shower is made as the preferential B of heating efficiency, be in order to shorten the stand-by period before the balneation, and the hot water supply quantity not sufficient when avoiding shower, but inject, when particularly not needing the shower of the strong flow of water, also can be judged to be the preferential A of running efficiency at the automatic hot-water of inferring based on subscription time.
At this, the A of optimum operation mode mainly makes the preferential running of efficiency of heating surface control, therefore, carries out the efficiency of heating surface transport maximum as target the Amin among Fig. 3 or Bmin.The B of optimum operation mode mainly makes the preferential running of heating efficiency control, therefore, carries out the heating efficiency transport maximum as target the Amax among Fig. 3 or Bmax.In addition, defrosting running in the middle of the C of optimum operation mode carries out (the defrosting running in the process of hot water supply running), but it is the frosting phase optimum operation mode that the efficiency of heating surface that caused by frosting when having considered winter low temperature reduces, and uses Fig. 5～Fig. 7 to carry out following explanation.
Fig. 5 is the chart that changes the time of the heating efficiency under the situation about turning round continuously the winter in the general Teat pump boiler of expression.The duration of runs when line A of Fig. 5 is illustrated in winter low temperature under the situation of (-7 ℃～+ 7 ℃ approximately of environment temperatures) running continuously and the variation of heating efficiency.Along with the process of the duration of runs, in the surperficial frosting of air refrigerant heat exchanger 4a, 4b, after about 30 minutes, the heat exchange performance of air refrigerant heat exchanger reduces, and heating efficiency reduces.The heating efficiency of start of run had been made as 100% o'clock, after about 1 hour, is being reduced to sometimes below 50%, needing the defrosting running.
If in the process of hot water supply running, defrost running, then return to initial heating efficiency once more, but the defrosting running stops hot water supply, therefore under being zero state, the hot water supply amount needs to consume electric power, cause the reduction of the efficiency of heating surface, therefore under the situation of the continuous hot water supplying operation more than 30 minutes, judge still do not defrost running and under the state that heating efficiency reduces, continue the hot water supply running of the running that defrosts on the way, be and the relevant difficult problems of intricately such as service condition or hot water supply duration of runs.
Present embodiment, as optimum operation control method at this problem, according to optimum operation control determinating reference shown in Figure 4, judge during water pot hot-water storage more than 150L and by service condition or study control and infer the hot water supply time more than 1 hour the time, defrosting running C in the middle of selecting, running defrosts when process is inferred hot water supply in the about 1/2 hour running of hot water supply time.At this, infer the duration of runs and be the hot water supply pattern more than 60 minutes, for example make decision 6 pm when supplying with the situation of hot water more than 60 minutes in certain hot water supply pattern according to the empirical learning of every day, when beginning this certain hot water supply pattern, owing to results of learning are estimated as hot water supply pattern more than 60 minutes to 6 pm on the same day.
Fig. 6 is in the Teat pump boiler of expression present embodiment, infers the continuous running under the long situation of hot water supply time and the key diagram of the comparison that adds heat in the middle defrosting running in the winter time.In Fig. 6, expression is inferred the heating efficiency of hot water supply time when being about 70 minutes and is changed, and therefore, it is such to become line A1 when having carried out continuous hot water supplying operation, and the total that line A1 below area became during 70 minutes adds heat.
In the present embodiment, infer the hot water supply time more than 60 minutes, therefore defrosting running in the middle of being judged to be, such shown in the dotted line of line B1 and line B2, surpass approximately through 1/2 hour the runnings that defrost in 30 minutes, the total that the below area of line B1 and line B2 became during 70 minutes adds heat.At this, when the total during to 70 minutes adds heat and compares, can be clear and definite according to Fig. 6, the heat reduction amount that the adds E that frosting during with continuous hot water supplying operation causes (deduct from the dotted line of B2 the solid line part of A1 after amount) compares, the heat reduction amount that the adds D that defrosting running causes (through adding the amount that heat disappears in the defrosting running after 30 minutes) is less, and therefore, it is many that middle defrosting running (B1 and B2) adds heat than turn round continuously (A1), whole as running, the efficiency of heating surface is good.
Fig. 7 is in the Teat pump boiler of expression present embodiment, infers the continuous running under the short situation of hot water supply time and the key diagram of the comparison that adds heat in the middle defrosting running in the winter time.In Fig. 7,, 50 minutes situation has been described as inferring the example of hot water supply time less than 60 minutes.Under the situation of having carried out continuous hot water supplying operation, as line A2, corresponding to short amount of time, heating efficiency reduction amount E reduces, and becomes to have carried out the heat reduction amount that the adds D that the defrosting under the situation of defrosting running causes than the centre and lack.Therefore, the total of the continuous running that the downside area of line A2 is represented adds heat, and it is many to add heat than the total of defrosting running in the middle of the downside product representation of line C1, C2, and running is better than the efficiency of heating surface of centre defrosting running continuously.
As mentioned above, being characterized as of embodiments of the present invention, judge the optimum operation mode with environment temperature, air refrigerant heat exchanger temperature, hot water supply pattern as determinating reference, according to described judgement select that the efficiency of heating surface preferentially turns round, heating efficiency preferentially turns round, optimum operation mode in the middle defrosting running, generally carry out optimum operation control, realize the raising of the guaranteeing of necessary heating efficiency, the efficiency of heating surface and energy-conservation.The concrete structure of this feature possesses: via coolant piping compressor, the cool water media heat exchanger that carries out the heat exchange of water and refrigerant, expansion valve, the air refrigerant heat exchanger that carries out the heat exchange of air and refrigerant are connected successively and heat pump refrigerant loop; By described cool water media heat exchanger, hot water supply mixing valve, be used to store hot-water storage jar, machine internal circulation pump and hot-water storage loop that the sparge pipe that connects constitutes between these parts by the warm water after the cool water media heat exchanger heats; By supplying with metal parts, described hot-water storage jar, hot water supply mixing valve, water mixing valve, flow rate regulating valve, go out the hot water metal parts and hot water supply loop that the sparge pipe that connects constitutes between these parts; And the running control module of controlling the action of described compressor, expansion valve, hot water supply mixing valve, machine internal circulation pump, water mixing valve, flow rate regulating valve etc., described running control module has: according to the determinating reference of the optimum operation mode that adopts in environment temperature or air refrigerant heat exchanger temperature and the hot water supply pattern, judge the optimum operation mode, as described optimum operation mode, be provided with at least that the efficiency of heating surface preferentially turns round, heating efficiency preferentially turns round and the optimum operation control module of middle these 3 kinds of drive manners of defrosting running.
So, the running control module of present embodiment, one of concrete feature is, and is by inferring the hot water supply time, long in the hot water supply time, under the good situation of the words efficient of middle defrosting running, carry out centre defrosting running, short in the hot water supply time, continuously under the good situation of the words efficient of running, turn round continuously, therefore can carry out the interim optimum operation of frosting.And, the running control module of present embodiment, by environment temperature (external air temperature), air refrigerant heat exchanger temperature, and the determinating reference of the optimum operation mode that in the hot water supply pattern, adopts, judge that the efficiency of heating surface preferentially turns round, heating efficiency preferentially turns round, and the optimum operation mode is selected in middle defrosting running, in the present embodiment, illustrated be applied to carry out direct hot water supplying operation moment the formula Teat pump boiler situation, but in the hot-water storage type Teat pump boiler, capacity by the hot-water storage jar is big, be controlled at by study and change the hot-water storage amount every day and use etc. under the situation and use present embodiment, also can obtain the same effect of moment formula.
Above-mentioned record is to make at embodiment, but the present invention is not limited to this, it should be understood by those skilled in the art that in the scope of purport of the present invention and the request patent protection that adds to carry out various changes and correction.
Claims (7)
1. Teat pump boiler possesses:
Heat pump refrigerant loop, air refrigerant heat exchanger and coolant piping that it has the compressor of compression refrigerant, the cool water media heat exchanger that carries out the heat exchange of water and refrigerant, expansion valve, carries out the heat exchange of air and refrigerant;
The hot water supply loop, it has stores the hot-water storage jar that has by the warm water after the described cool water media heat exchanger heats, the machine internal circulation pump, the hot water supply mixing valve, carry out bathtub heat exchanger with heat exchange by the warm water after the described cool water media heat exchanger heats, bathtub circulation pump, water mixing valve, sparge pipe, this hot water supply loop forms: the hot-water storage loop of storing high-temperature water in described hot-water storage jar, to going out the direct direct hot water supply circuit of supplying with by the warm water after the described cool water media heat exchanger heats in hot water position, to going out the water pot hot water supply loop of hot water position supply from the warm water of described hot-water storage jar, use pump to the bathtub hot water infusion circuit of bathtub supply by described bathtub circulation by the warm water after the described cool water media heat exchanger heats, supply with from described bathtub with the bathtub of the warm water of heat exchanger heating circuit again to bathtub with pump by the circulation of described bathtub; And
Operation control section, it is by going out the operating and setting of hot water position remote controller and bathtub remote controller, controls that each inscape is carried out the hot-water storage running, directly hot water supplying operation, water pot hot water supply running, bathtub hot water inject running, bathtub adds heat run again,
Described Teat pump boiler is characterised in that,
Described operation control section, with the temperature of the environment temperature of Teat pump boiler, described air refrigerant heat exchanger and comprise to water pot and store hot water, supply with to go out the hot water position that hot water, bathtub hot water inject, the hot water supply of running more than the scheduled time is carried out optimum operation control in interior hot water supply/hot-water storage pattern as determinating reference, this optimum operation control is used for judging that the efficiency of heating surface preferentially turns round, heating efficiency preferentially turns round, middle these 3 kinds of drive manners of defrosting running some.
2. Teat pump boiler according to claim 1 is characterized in that,
Described operation control section, reach maximum compressor rotary speed running with the efficiency of heating surface when being judged to be the described efficiency of heating surface when preferentially turning round, reach maximum compressor rotary speed running with heating efficiency when being judged to be described heating efficiency when preferentially turning round, when being judged to be the running that defrosts after reaching maximum compressor rotary speed running during the defrosting running with heating efficiency in the middle of described and passing through time of about 1/2 of heat pump duration of runs of being inferred.
3. Teat pump boiler according to claim 1 is characterized in that,
Described operation control section, as described determinating reference, described environment temperature is divided into approximately+more than 7 ℃ or approximately below-7 ℃, peace treaty-7 ℃～+ 7 ℃ at least more than two parts.
4. Teat pump boiler according to claim 1 is characterized in that,
Described operation control section as described determinating reference, is divided into described air refrigerant heat exchanger temperature about more than 0 ℃ and less than about 0 ℃ of these two parts.
5. Teat pump boiler according to claim 1 is characterized in that,
Described operation control section as described determinating reference, at each hot water supply pattern learning heat pump duration of runs, is being inferred under the situation that be about hot water supply pattern more than 60 minutes the duration of runs, and the defrosting running is controlled as optimum operation in the middle of judging.
6. according to any described Teat pump boiler in the claim 1 to 5, it is characterized in that,
Described operation control section is judged in the frosting of carrying out described air refrigerant heat exchanger after heat run finishes that adds of heat pump running,
When being judged to be frosting, the running that defrosts stops the heat pump running then, and when being judged to be not frosting, the running ground that do not defrost stops the heat pump running.
7. according to any described Teat pump boiler in the claim 1 to 5, it is characterized in that,
Described heat pump refrigerant loop is the double-circulating heat pump refrigerant loop of using two described compressors, two described cool water media heat exchangers, two described expansion valves, two described air refrigerant heat exchangers, two described coolant pipings respectively.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2008110292A JP5081050B2 (en) | 2008-04-21 | 2008-04-21 | Heat pump water heater |
| JP2008-110292 | 2008-04-21 | ||
| PCT/JP2008/064649 WO2009130804A1 (en) | 2008-04-21 | 2008-08-15 | Heat pump water heater |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102016439A true CN102016439A (en) | 2011-04-13 |
| CN102016439B CN102016439B (en) | 2013-11-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008801287228A Expired - Fee Related CN102016439B (en) | 2008-04-21 | 2008-08-15 | Heat pump water heater |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP5081050B2 (en) |
| KR (1) | KR101222300B1 (en) |
| CN (1) | CN102016439B (en) |
| WO (1) | WO2009130804A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104755856A (en) * | 2013-06-20 | 2015-07-01 | 三菱电机株式会社 | Heat pump apparatus |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101852494A (en) * | 2010-05-31 | 2010-10-06 | 宁波海诚电器有限公司 | Air energy water heater and control method thereof |
| CN105650855B (en) * | 2016-03-26 | 2019-06-07 | 广东万家乐燃气具有限公司 | A kind of gas heater and its control method with reservation function |
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| JP2005121283A (en) * | 2003-10-16 | 2005-05-12 | Matsushita Electric Ind Co Ltd | Heat pump water heater |
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| CN2935006Y (en) * | 2006-04-30 | 2007-08-15 | 谢坤 | Automatic defrost heat pump water heater |
| JP2008008507A (en) * | 2006-06-27 | 2008-01-17 | Mitsubishi Electric Corp | Hot water storage type water supply system |
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2008
- 2008-04-21 JP JP2008110292A patent/JP5081050B2/en not_active Expired - Fee Related
- 2008-08-15 CN CN2008801287228A patent/CN102016439B/en not_active Expired - Fee Related
- 2008-08-15 WO PCT/JP2008/064649 patent/WO2009130804A1/en active Application Filing
- 2008-08-15 KR KR1020107023388A patent/KR101222300B1/en not_active IP Right Cessation
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| JP2003222392A (en) * | 2002-01-29 | 2003-08-08 | Daikin Ind Ltd | Heat pump type water heater |
| CN1548864A (en) * | 2003-05-20 | 2004-11-24 | 乐金电子(天津)电器有限公司 | Defrosting control method for air conditioner |
| JP2005121283A (en) * | 2003-10-16 | 2005-05-12 | Matsushita Electric Ind Co Ltd | Heat pump water heater |
| JP2005127588A (en) * | 2003-10-23 | 2005-05-19 | Matsushita Electric Ind Co Ltd | Heat pump hot-water supply device |
| JP2006266591A (en) * | 2005-03-24 | 2006-10-05 | Hitachi Home & Life Solutions Inc | Heat pump water heater |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104755856A (en) * | 2013-06-20 | 2015-07-01 | 三菱电机株式会社 | Heat pump apparatus |
| CN104755856B (en) * | 2013-06-20 | 2017-03-08 | 三菱电机株式会社 | Heat pump assembly |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2009130804A1 (en) | 2009-10-29 |
| JP2009257717A (en) | 2009-11-05 |
| KR101222300B1 (en) | 2013-01-16 |
| CN102016439B (en) | 2013-11-06 |
| JP5081050B2 (en) | 2012-11-21 |
| KR20100128332A (en) | 2010-12-07 |
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