CN1782613A - Teat pump hot water supply device - Google Patents

Teat pump hot water supply device Download PDF

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Publication number
CN1782613A
CN1782613A CNA2005100554291A CN200510055429A CN1782613A CN 1782613 A CN1782613 A CN 1782613A CN A2005100554291 A CNA2005100554291 A CN A2005100554291A CN 200510055429 A CN200510055429 A CN 200510055429A CN 1782613 A CN1782613 A CN 1782613A
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China
Prior art keywords
hot water
water
loop
water supply
hot
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CNA2005100554291A
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Chinese (zh)
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CN100441977C (en
Inventor
松林秀
舟越砂穗
石山明彦
齐藤健一
权守仁彦
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Hitachi Appliances Inc
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Hitachi Appliances Inc
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24HFLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H1/00Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
    • F24H1/10Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium
    • F24H1/12Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium in which the water is kept separate from the heating medium
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24DDOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D17/00Domestic hot-water supply systems
    • F24D17/02Domestic hot-water supply systems using heat pumps
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24HFLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H4/00Fluid heaters characterised by the use of heat pumps
    • F24H4/02Water heaters
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24HFLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H7/00Storage heaters, i.e. heaters in which the energy is stored as heat in masses for subsequent release
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B30/00Heat pumps
    • F25B30/02Heat pumps of the compression type

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Heat-Pump Type And Storage Water Heaters (AREA)

Abstract

To provide a heat pump water heater superior in installation performance, work efficiency and easiness-to-use. This water heater has a heat pump refrigerant circuit for connecting a compressor, a water refrigerant heat exchanger, a pressure reducer and an evaporator by a refrigerant pipe, a hot water supply circuit for connecting a water supply port, a bypass valve, a water supply check valve, the water refrigerant heat exchanger and a hot water outlet port for taking out heated hot water via a first flow regulating valve, a water supply circuit, and a hot water storage tank reheating circuit for connecting a hot water storage tank connected via a second flow regulating valve to a branch pipe branching off from the hot water supply circuit and a circulating pump for sending water from the hot water storage tank to the water refrigerant heat exchanger by a water pipe. Further, the heater has the direct hot water outlet function, the tank hot water outlet function and the simultaneous hot water outlet function, and switches the three functions by an operation control means. Thereby, it becomes possible to provide an instantaneous water heater type heat pump water heater superior in the installation performance, the work efficiency and the easiness-to-use by the heat pump water heater for connecting a heat source unit for heating the water and a hot water storage unit by the water pipe and low voltage control wiring.

Description

Teat pump hot water supply device
Technical field
The present invention relates to a kind of Teat pump hot water supply device that the hot water that utilizes the water refrigerant heat exchanger to heat directly can be supplied with to the water outlet end.
Background technology
Usually, Teat pump hot water supply device is by making heater work cheap night at electric power, and hot water filled with the thermal storage water tank store, and supplies with daytime and uses.And, general, be with the heating efficiency of the heat source unit of feedwater heating and being used in combination of 1 pair 1 of thermal storage water tank's capacity of storing the hot water that was heated, set the heating efficiency in heat pump refrigerating agent loop according to storage hot water capacity.Promptly, in such hot water supply apparatus, and under the big situation of heat pump ability with respect to little storage hot water capacity, because to exceed the big ability short time burning heat of needs, so have to carry out the running of inefficiency, in contrast, with respect to big storage hot water capacity and under the little situation of heat pump ability, can not in official hour, make water whole in the thermal storage water tank all burn heat.
Therefore, a kind of device (with reference to patent documentation 1) has been proposed, this device has the ability set mechanism of setting according to the setting of thermal storage water tank's storage hot water capacity set mechanism, to the heating efficiency in heat pump refrigerating agent loop, set the suitable mutually predetermined heating ability of storage hot water capacity of the storage hot water unit that makes up with heat source unit, the heat pump refrigerating agent loop of turning round.
Like this, with respect to the source heat pump heat unit of a technical specification,, and can guarantee the hot water amount that needs even the different storage hot water unit of combination storage hot water capacity also can be realized the running that do not lower efficiency.
[patent documentation] spy opens 2003-247748 communique (the 3rd page, the 1st figure)
Summary of the invention
Yet the hot water supply apparatus of patent documentation 1 shows no sign of the ease of use of considering setting property, application property and user.At this, about setting property,, need jumbo thermal storage water tank owing to be the storage hot-water type, need big area and the enough ground intensity of being provided with, be difficult to be installed in collective residence narrow place or the big place of insufficient strength like that.In addition, about application property, must be used to strengthen ground intensity based engineering.
Moreover, about user's ease of use, for example, externally gas temperature is low winter hot water use amount when increasing because hot water amount's deficiency, thermal storage water tank's hot water uses up, in a single day and cause the hot water cutout, burning heat to the hot water that makes ormal weight again needs for a long time.And, because the long-time storage a large amount of hot water higher, waste energy from thermal storage water tank's big surface radiating than environment temperature, thus the part that must descend to the temperature that causes thus night with certain allowance heat.
The present invention has the Teat pump hot water supply device of good setting property, application property and ease of use as problem to provide a kind of.
In order to solve above-mentioned problem, heat pump for supply device of the present invention is characterized in that,
Have:
Heating unit, it has and utilizes non-add heating arrangements that hot water heat and the control loop of control this heating arrangements of heat pump cycle to supplying with;
The storage hot water unit, it has: connection possesses the thermal storage water tank of temperature sensor and the non-hot water export mouth of feed pipe; And utilize that described heating arrangements heated non-ly add hot water in hot water and the described thermal storage water tank, supply with supply hot-water return based on the hot water of the temperature of described control loop instruction;
By non-ly adding the hot water pipe arrangement, adding the hot water pipe arrangement and be connected described heating unit and described storage hot water unit with the control wiring.
According to this structure, heating unit can the necessary structure of intensive heating, and the such electric wiring of driving power that can intensive driving heat pump cycle, and setting property and application property are good.In addition, intensive water supply and the non-derivation of hot water and the storage hot water unit that encloses with the importing of heating unit heated hot water and the supply of hot water etc., current one of adding, if be arranged near the place that the water pipe arrangement concentrated, just further increased application property, according to the wire structures of electric product such as the sensor that is called as so-called light current and magnetic valve, with draw easily around the control wiring only be connected with heating unit, so setting property and application property are good.
Except that said structure, can also adopt such formation: described heating unit, also have to heating arrangements and supply with the non-non-heating pump that adds hot water, described control loop, when not from described hot water supply loop go out hot water the time, drive described non-heating pump the hot water in the described thermal storage water tank heated.
In order further to solve above-mentioned problem, Teat pump hot water supply device of the present invention has:
The evaporimeter with the heat exchange of post-decompression cold-producing medium and air, is carried out at its decompressor that connects compressor respectively, carries out and reduce pressure by the water refrigerant heat exchanger of the cold-producing medium of this compressor compresses and the heat exchange between water, to the cold-producing medium after the heat exchange by refrigerant tubing in heat pump refrigerating agent loop;
The hot water supply loop, its by waterpipe connect the feed water inlet, by-passing valve that the water of supplying with is distributed, water supply check valve, the described water refrigerant heat exchanger that the water that distributes is heated, hot-water outlet by the 1st flow rate regulating valve output heated hot water;
Water supply loop, it connects described feed water inlet, described by-passing valve, makes the stream that distributes the residual hydration stream in back between described the 1st flow rate regulating valve in described hot water supply loop and the described hot-water outlet by waterpipe;
The thermal storage water tank chases after and burns the loop, its by waterpipe connect difference pipe arrangement of telling from described hot water supply loop, the thermal storage water tank that connects by the 2nd flow rate regulating valve, between the by-passing valve in described hot water supply loop and water supply check valve, make from described thermal storage water tank's bottom the hot water interflow stream, with the water refrigerant heat exchanger in the water supply check valve in described hot water supply loop and the circulating pump that connects, described hot water supply loop; Control loop; The bathing pool remote controller; The kitchen remote controller; With each sensor;
Constitute by the running controlling organization, this running controlling organization is according to the operating and setting of described each remote controller and the detected value of each sensor, and the described heat pump refrigerating agent of described control loop running control loop, hot water supply loop, water supply loop, thermal storage water tank chase after the parts that burn the loop; This Teat pump hot water supply device has controlling organization, this controlling organization in heat pump refrigerating agent loop in the process that heats up gradually, in the aperture of adjusting the 1st flow rate regulating valve and the 2nd flow rate regulating valve, going out hot water from case switches to and goes out hot water simultaneously, when further fully heat up in heat pump refrigerating agent loop, switch to and directly go out hot water from going out hot water simultaneously, it is characterized in that, by the water supply side connecting pipings, hot water supply side connecting pipings, low-voltage control pipe arrangement connects heat source unit and storage hot water unit, this heat source unit is by heat pump refrigerating agent loop, the water supply check valve in hot water supply loop and water refrigerant heat exchanger, the thermal storage water tank chases after the circulating pump that burns the loop, control loop and each sensor of running controlling organization constitute, and this storage hot water unit is by directly going out hot water according to described running controlling organization instruction and case goes out hot water and goes out the hot water supply loop of hot water switching simultaneously, water supply loop, the thermal storage water tank chases after and burns the loop, each sensor of described running controlling organization constitutes.
According to said structure, because after heating up in heat pump refrigerating agent loop, the mixing water outlet of hot water in water refrigerant heat exchanger heated hot water and the case, switch to and only directly go out hot water, so can reduce the use amount of the hot water of storing in the thermal storage water tank, reduce thermal storage water tank's capacity, can make it lightweight, therefore, the storage hot water unit that can the separate place that is arranged on narrow place or has normal intensity with heat source unit.Under this situation,, do not guarantee power source special so need not survey the thermal storage water tank because the storage hot water unit is connected with the control loop of heat source unit by low-voltage control wiring.
And, in order to reach purpose of the present invention, on the basis of said structure, also have by the storage hot water capacity set mechanism of the storage hot water capacity of setting the storage hot water unit, continuous peak load storing mechanism that the maximum load of hot water is supplied with in storage continuously, calculate needed directly go out the hot water ability directly go out hot water ability arithmetical organ, the heat pump ability of heat source unit is set at the heat pump ability set mechanism of setting, controls compressor operation platform number and compressor revolution.
According to said structure, the user can constitute, be provided with the storage hot water capacity that area etc. is selected the storage hot water unit according to user's life style or number, simultaneously, heat pump refrigerating agent loop has many compressors that can be controlled revolution by inverter control, therefore can be by heat pump ability set mechanism, set the heat pump ability value of regulation for according to storage hot water capacity, in case of necessity can hot water constantly supply with the hot water of requirement.
And, owing to have the circulating pump controlling organization that the water internal circulating load of circulating pump is controlled to be the regulation internal circulating load of the two-layer distribution that does not upset temperature in the thermal storage water tank, even so under the discrete situation of different because of the situation that is provided with of user's house situation heat source unit, storage hot water unit and connecting pipings, as to cause the water pipe arrangement pressure losses, also the water internal circulating load can be controlled to be the best, therefore, can keep the high efficiency of heat pump.
And, temperature or be trapped in the temperature of water that the thermal storage water tank chases after in the waterpipe that burns the loop and drop to externally than under the low situation of first set point of temperature, the water circulation that described thermal storage water tank is chased after burn the loop, dropping under the situation that is lower than second set point of temperature also lower than first set point of temperature, make the running of heat pump refrigerating agent loop, the water circulation that described thermal storage water tank is chased after burn the loop thus, can prevent freezing of water in the waterpipe.
And, the heating efficiency that makes the heat source unit of Teat pump hot water supply device is 10~15kW, and the storage hot water capacity of storage hot water unit is about 20~200L, like this, the compressor that can make heat pump refrigerating agent loop is 1, can guarantee directly to go out the hot water ability, go out the hot water ability continuously when normally using with low power consumption, also can shorten the thermal storage water tank and burn the hot time, setting property, application property and user's all good hot water supply apparatus of ease of use can be provided with more small-sized, light weight, low cost.
And when the cold-producing medium that uses in the heat pump refrigerating agent loop during as carbon dioxide, the characteristic of the cold-producing medium of supercriticality can accomplish it is suitable for the hot water supply heating of high temperature or the heating that becomes the hot water of heat medium.
According to the present invention, it is all used up to eliminate hot water, and can improve setting property, application property and user's ease of use.Relate to a kind of with thermal source portion and storage hot water part from, improved the Teat pump hot water supply device of setting property, application property and user's ease of use.
Description of drawings
Fig. 1 is the modular construction figure of an example of the Teat pump hot water supply device of expression present embodiment;
Fig. 2 is the functional structure chart of an example of the Teat pump hot water supply device of expression present embodiment;
Fig. 3 is the water internal circulating load performance plot of an example of the Teat pump hot water supply device of expression present embodiment;
Fig. 4 be the expression present embodiment Teat pump hot water supply device an example go out hot water ability characteristics figure.
Among the figure
1... heat pump refrigerating agent loop
3... hot water supply loop
5... running controlling organization
14... water refrigerant heat exchanger
33... by-passing valve
45... circulating pump
47... water supply check valve
Adjust valve 60... go out hot water flow
70... case flow rate regulating valve
75... thermal storage water tank
A... heat source unit
B... store hot water unit
The specific embodiment
Below, with reference to the description of drawings embodiments of the present invention.
[embodiment 1]
Fig. 1 is the modular construction figure that the Teat pump hot water supply device of the present invention's formation is used in expression.As shown in the figure, the modular construction of Teat pump hot water supply device has: heat pump refrigerating agent loop 1; Hot water supply loop 3; And running controlling organization 5.And, on set-up mode, constitute, and be connected to each other by water supply side connecting pipings 91, hot water supply side connecting pipings 93 and low-voltage control wiring 95 by heat source unit A and storage hot water unit B.And heat source unit A is connected with each remote controller and power supply (not shown), and storage hot water unit B is with water supply and go out the hot water pipe arrangement and be connected.
Heat pump refrigerating agent loop, 2 endless form that employing is made of 2 refrigerant loops, constitute by first closed-loop path and second closed-loop path, this first closed-loop path is connected with compressor 11a, water refrigerant heat exchanger 14, decompressor 17a, evaporimeter 22a in turn, this second closed-loop path is connected with compressor 11b, water refrigerant heat exchanger 14, decompressor 17b, evaporimeter 22b in turn, is sealed with cold-producing medium in each loop.Compressor 11a, 11b are capacity controllable systems, can be with big capacity running under the situation of carrying out a large amount of hot water supplies.At this, compressor 11a, 11b can freely control revolution to high speed (for example 8000 rev/mins) from low speed (for example 1000 rev/mins) by PWM (pulsewidth modulation) control, Control of Voltage (for example PAM control) and their combination control.Water refrigerant heat exchanger 14 is made of refrigerant side heat-transfer pipe and water supply side heat-transfer pipe, carries out heat exchange between this refrigerant side heat-transfer pipe and feedwater side heat-transfer pipe.Evaporimeter 22a, 22b are made of the air cooling agent heat exchanger of the heat exchange of carrying out air and cold-producing medium.
Hot water supply loop 3 goes out hot-water return, thermal storage water tank and chases after and burn the loop and constitute by directly going out hot-water return, case.Directly go out hot-water return, be located at the feed water inlet on the storage hot water unit B, by the pipe arrangement 31 of the water-supply quantity sensor (all not shown) that has pressure-reducing valve and detect to supply water, and, be connected to heat source unit A successively by by-passing valve 33, pipe arrangement 35, pipe arrangement 38, water supply side connecting pipings 91.And then, by water supply side heat-transfer pipe 51,52, hot water supply pipe arrangement 54, the hot water supply side line 93 of pipe arrangement 42, water supply check valve 47, pipe arrangement 49, water refrigerant heat exchanger, again by the water pipe arrangement connect successively storage hot water unit B pipe arrangement 56, pipe arrangement 58, go out hot water flow and adjust valve 60, pipe arrangement 62, pipe arrangement 64 and constitute.At this, by-passing valve 33 not only supplies water to the waterpipe that directly goes out hot-water return, and is can be through difference pipe arrangement 36 to the proportioning valve that goes out hot water pipe arrangement 64 dispensing water for the water temperature that goes out hot water is regulated.In addition,, water supply check valve 47 is only to a direction flowing water, prevents adverse current.
In said structure, when the tap that goes out the hot water end is opened, because the current that water channel pressure flows into from the feed water inlet, at by-passing valve 33, difference pipe arrangement 36, when going out the path flow of hot water pipe arrangement 64, the water-supply quantity sensor detects and supplies water, and opens out hot water flow control valve 60 by running controlling organization 5, make 1 entry into service of heat pump refrigerating agent loop, simultaneously, water guide water refrigerant heat exchanger 14 is carried out heat exchange, make heated hot water can directly go out hot water by water channel pressure.In addition, going out the hot water amount can adjust the aperture of valve 60 by adjusting hot water flow, freely adjusts.
Case goes out hot-water return, be located at the feed water inlet on the storage hot water unit B, be connected to by-passing valve 33 by having pressure-reducing valve with the pipe arrangement 31 that detects the water-supply quantity sensor (all not shown) that supplies water, be connected to thermal storage water tank 75 successively by pipe arrangement 35, pipe arrangement 40, and then, through the pipe arrangement 72 and the case flow rate regulating valve 70 of upper box part, be connected to the described hot-water return that directly goes out successively through the water pipe arrangement.In said structure, when with directly go out hot-water return and similarly detect when supplying water, open out hot water flow by running controlling organization 5 and adjust valve 60 and case flow rate regulating valve 70, make 1 entry into service of heat pump refrigerating agent loop, simultaneously, utilize water channel pressure by pipe arrangement 40 with the water thermal storage water tank 75 that leads, from below water upwards being promoted of thermal storage water tank 75, thus, can export the hot water that is stored in top.And, can adjust valve 60 and case flow rate regulating valve 70 by adjusting hot water flow, freely adjust the hot water amount.
The thermal storage water tank chases after and burns the loop, is connected to heat source unit A by thermal storage water tank 75, pipe arrangement 40, pipe arrangement 38, the water supply side connecting pipings 91 of storing hot water unit B.And then, water supply side heat-transfer pipe 51,52, hot water supply pipe arrangement 54, hot water supply side connecting pipings 93 by pipe arrangement 42, circulating pump 45, pipe arrangement 49, water refrigerant heat exchanger, be connected to the pipe arrangement 56 of storage hot water unit B once more, be connected to thermal storage water tank 75 successively by pipe arrangement 72 through case flow rate regulating valve 70.In said structure, utilize running controlling organization 5, carry out the running in heat pump refrigerating agent loop 1, the temperature of water refrigerant heat exchanger 14 fully raise rear cabinet flow rate regulating valve 70 open, when making circulating pump 45 runnings, via the water at low temperature guide water refrigerant heat exchanger 14 of water pipe arrangement with thermal storage water tank 75 bottoms, once more after the heating, be re-used as the hot-water storage that fully heated up top thermal storage water tank 75.At this, thermal storage water tank 75 constitutes and is the cylindric low capacity case that forms along longitudinally, be about 1/10~1/2 the little thermal storage water tank who in the past store the thermal storage water tank of hot water mode, under with the low situation of the temperature of the hot water of water refrigerant heat exchanger 14 heating that directly go out hot-water return, be store can with the hot water of the high temperature that mixes from the hot water that directly goes out hot-water return.
In the running controlling organization 5, control loop 101 is present in the inside of heat source unit A, according to bathing pool remote controller device 103, the operating and setting of kitchen remote controller device 104 and the detected value of each sensor, the running of carrying out heat pump refrigerating agent loop 101 stops and the revolution control of compressor 11a, 11b, simultaneously, running by control circulating pump 45 stops, by-passing valve 33, go out hot water flow and adjust valve 60, case flow rate regulating valve 70, goes out directly that hot water running, case go out the hot water running, go out the hot water running simultaneously, the thermal storage water tank chases after and burns running.In addition, comprise the temperature sensor of the state of temperature that detects each one, the pressure sensor of detected pressures, the water sensor of the detection water yield in each sensor.
At this, when the detected flow of water-supply quantity sensor does not reach setting, only carry out case and go out hot water running, when setting is above, goes out hot water fortune dress from case as mentioned above and switch to and only directly go out the hot water running through going out the hot water running simultaneously.And, carry out following control: the revolution of control compressor 11a, 11b, so that just begun the back for shortening of the high speed revolution running of heating starting time with regulation in running.In addition, after the hot water supply that goes out the hot water end is used, have and carry out the thermal storage water tank and chase after and burn the function that shuts down after the running.
Secondly, with reference to Fig. 1 the running action summary of implementing Teat pump hot water supply device of the present invention is described.Open out the tap of hot water end, not shown, maybe when the hot water that carries out bath injects, running controlling organization 5 detects water supply as mentioned above, make compressor 11a, the 11b starting, make 3 entrys into service of heat pump refrigerating agent loop, by directly going out the feed water inlet of hot-water return, by-passing valve 33, water supply check valve 47, water refrigerant heat exchanger 14, go out hot water flow and adjust valve 60, go out hot water pipe arrangement 64, directly go out the hot water running, simultaneously, go out the feed water inlet of hot-water return by case, by-passing valve 33, the thermal storage water tank 75, case flow rate regulating valve 70, branch's pipe arrangement 72, go out hot water flow and adjust valve 60, the case that goes out hot water pipe arrangement 64 grades goes out hot-water return to carry out case and goes out the hot water running.At this moment, by adjusting tank flow rate regulating valve 70 with go out the aperture that hot water flow is adjusted the valve of valve 60, can slowly reduce case and go out the hot water amount and increase and directly go out the hot water amount.
At this, the water refrigerant heat exchanger will be delivered to the high temperature refrigerant of compressor 11a, 11b compression in heat pump refrigerating agent loop 1, and the water that flows into from water supply piping 49 is heated and flow to hot water supply pipe arrangement 54.When running started, running controlling organization 5 was in the stable state that reaches a high temperature in the needed stipulated time, be controlled to rotation than normal high speed with the revolution of compressor, and start-up time of hot water supply running was foreshortened to about 2~3 minutes.Then, in the stipulated time of running after just having begun, carried out after the case that the thermal storage water tank supplies with hot water goes out the hot water running, 5 actions of running controlling organization stop case and go out the hot water running, switch to only directly to go out the hot water running.In addition, running controlling organization 5 is setting when following in thermal storage water tank 75 the residual heat water yield, stops case and goes out the hot water running, switches to only directly to go out the hot water running.At this moment, the heating efficiency in heat pump refrigerating agent loop 1 is about about 25~30kW, realizes by 2 endless form.In addition, owing to be the mode of heating that utilizes heat pump, even heating efficiency is about 25~30kW, and the power consumption that needs only is about 5~6kW.
Moreover, when hot water use to finish to close out the tap of hot water end, use the back carrying out case at hot water and go out the hot water running and directly go out under the situation of hot water running, stop described two kinds of runnings immediately, directly go out the hot water running if having only, then stop directly to go out the hot water running.And then, running controlling organization 5, the beginning thermal storage water tank chases after the running of burning, and finishes and be judged to be storage hot water to finish the back and stop running detecting storage hot water by temperature sensor etc.As mentioned above, in running controlling organization 5, in all runnings, stop running as target after, must before storage hot water finishes, carry out the thermal storage water tank and chase after and burn running.
In above-mentioned structure, in the control, during the startup of hot water supply running, emit the hot water that is stored in the thermal storage water tank, heat pump scarce capacity when replenishing the startup as the feature of Teat pump hot water supply device, in case because after heating up in heat pump refrigerating agent loop, supply water from the feed water inlet, to directly emit by the hot water of water refrigerant heat exchanger heating, simultaneously, after hot water supply action stops, must carry out the thermal storage water tank and chase after and burn, in order to go out the hot water action next time, so, storage hot water capacity can be made that area that the life style with each user maybe can be provided with adapts, need minimal size.Therefore, the storage hot water unit can be arranged on pipeline space, instrument box or the indoor space that does not utilize etc. of condominium by small-sized, lightweight, and the intensity on ground does not need special reinforcement yet.And, owing to only be connected with heat source unit with low-voltage control wiring by 2 water pipe arrangements, so construction is simply to the utmost point.That is, by with main electric loop and need the equipment of electric power and electric power loop to concentrate on a place, so can alleviate the burden on electrical engineering.In addition, selecting the place is set, is purpose to improve the responsiveness at once that hot water for example, with box unit be arranged on from hot water utilize near place, position, only be connected with heat source unit with the water pipe arrangement, so the burden that is provided with is very little by the control wiring.
[embodiment 2]
As above-mentioned illustrated, each user can select and the big or small corresponding storage hot water unit of storing the hot water capacity according to hope.At this, two kinds of situations when we have considered to select storage hot water capacity to be 50L and 100L.Under the situation of storage hot-water type, make the hot water of filling with storage hot water capacity so important with best efficient burning thermosetting in official hour, but have under the situation that directly goes out hot water function, importantly be not subjected to constantly restriction, whenever can both realize not having the hot water supply of disconnected hot water with the highest efficient.Usually, storage hot water temperature in the thermal storage water tank is controlled in more than 60 ℃ or 60 ℃ from the health aspect, the hot water temperature who directly goes out hot water is about 38 ℃~45 ℃, under the situation of the radiation loss when the efficient of considering heat pump refrigerating agent loop and storage hot water, directly go out hot water efficient can be higher as far as possible.
At this, in Fig. 2, running controlling organization 5, peaked mechanism 125 with hot water supply load that the storage user recurs, the load sharing amount 121 that deduction is replenished by the thermal storage water tank, calculate with the necessary ability 127 that directly goes out hot water supply, utilize the ability set mechanism that this ability is set at maximum capacity, can utilize the running revolution of the compressor in revolution controlling organization 130 control heat pump refrigerating agent loops.In addition, continuously the initial value of peak load storing mechanism 125 supposes that the hot water of bath is filled with the hot water amount who uses with shower, in period usually 17 ℃ water 300L is heated into 42 ℃ of required heats, for 15 minutes 35kW of about 8700W heating.For example, be under the situation of 50L with 65 ℃ of hot water temperatures of storage storage hot water capacity, mix with 17 ℃ water 46L, can replenish 42 ℃ hot water 96L, so, directly go out about the 24kW that the hot water ability is necessary for the hot water 204L that can supply with 42 ℃ in 15 minutes.Equally, be under the situation of 100L at storage hot water capacity, mix with 17 ℃ water 92L, can replenish 42 ℃ hot water 192L, so, directly go out the hot water ability, determine to can in 15 minutes, supplying with about 42 ℃ the 13kW of hot water 108L.Like this, under the identical situation of hot water supply load, when storage hot water capacity hour, maximum capacity is set highly, but as mentioned above, because heat pump refrigerating agent loop is made of 2 circulations, the operating number of compressor and revolution can freely be controlled, so, irrelevant with the size of maximum capacity, the control of can turning round.In addition, according to real-world operation, under the situation that peak load has changed, be updated to new load, but, can set the maximum capacity of heat pump efficiency the best and the revolution of compressor according to results of learning.
[embodiment 3]
Secondly, with reference to Fig. 3 the control of the water internal circulating load of circulating pump 45 is described.As mentioned above, when going out hot water, all carry out the thermal storage water tank at every turn and chase after and burn running, so its number of times has very big influence to whole efficiency.Under the situation that the water refrigerant heat exchanger heats the water at low temperature of thermal storage water tank bottom again, the heat pump efficiency that the thermal storage water tank chases after when burning running is maintained at high efficiency state.Yet when the boundary layer of two layers of distribution of hot water in guaranteeing the thermal storage water tank and water at low temperature (hot water water mixed layer) was upset, the temperature of the water at low temperature of bottom rose in the thermal storage water tank, and the water temperature that enters the water refrigerant heat exchanger rises, and heat pump efficiency extremely reduces.Therefore, should guarantee two layers of distribution in the thermal storage water tank, chase after again that to burn running be very important, particularly become when small-sized the thermal storage water tank, its importance degree becomes higher.In order to ensure two layers of distribution in the thermal storage water tank, must control the action of circulating pump, control the water internal circulating load exactly, make it not stir boundary layer as far as possible.
Yet in the installment state of reality, the length of the connecting pipings between hot water unit, number of bends is not equal according to heat source unit and storage, and the pressure loss in the water pipe arrangement changes, and may not guarantee the suitable running of two layers of distribution in the thermal storage water tank.For example, in ac pump, as shown in Figure 3, when the pressure load of installment state is P1, owing to begin circulation suddenly with certain internal circulating load of water internal circulating load V50, the V60 of the intersection point of the Water Circulation Characteristic curve of the 50HZ, the 60HZ that are equivalent to represent with solid line, so, particularly boundary layer is stirred upset in small-sized thermal storage water tank, the water temperature that enters in the water refrigerant heat exchanger rises, and therefore, has to carry out the running of inefficiency.
So, in the present invention, circulating pump revolution controlling organization by running controlling organization 5, pressure load is under the situation of P1 at the beginning of the cycle, the characteristic entry into service of representing with dotted line a, be controlled to the water internal circulating load V1 that can under the situation that does not upset boundary layer, begin to circulate, then, should control for the torque that maximum regulation water internal circulating load consistently makes internal circulating load slowly change with heat pump efficiency, in the maximum of the running of the characteristic of representing to dashed lines b is set the scope of internal circulating load VN, adjust torque, the water internal circulating load can be controlled to be the water internal circulating load of regulation.Therefore, even under the situation that the pressure loss that causes the water pipe arrangement because of installment state changes, also can be controlled to be the internal circulating load of regulation by the circulating pump controlling organization, can become hot water circuit boundary layer, desirable that does not upset in the thermal storage water tank, chase after high efficiency when burning so can keep case, so, can improve the overall efficiency of Teat pump hot water supply device.Method as realizing this control has following method: the method for using the DC driving pump; Use the method for inverter control pump; And the aperture of still utilizing case flow rate regulating valve 70 with the AC pump is adjusted the method for internal circulating load etc.
[embodiment 4]
Secondly, in the present invention, because the miniaturization and of storage hot water unit, can select various places being provided with on the place, simultaneously, what have is provided with the place, drawing around part of the water pipe arrangement of hot water supply loop integral body becomes many, so it is very important carrying out the antifreeze of water pipe arrangement efficiently.In Fig. 1, because heat source unit A need draw heat from extraneous air, so generally be set at outdoor.On the other hand, storage hot water unit B is to select to be provided with the place according to user's hope, but in the narrow and small condominium in spaces such as balcony etc., be arranged near the pipeline space in indoor toilet, near the instrument box the entry more, in single-family housing, be arranged at outdoor more.In addition, about freezing of water pipe arrangement, regional difference is very big.
Like this for according to the installation situation with the antifreeze mechanism that the region is adopted the different water pipe arrangement of measure efficiently is installed, externally the logic of the detected temperatures of gas temperature sensor (not shown) and supply water temperature sensor (not shown) and, under the low situation of first set point of temperature that determines by running controlling organization 5, by opening case flow rate regulating valve 70, make circulating pump 45 running, the thermal storage water tank is chased after burn the water of the water pipe arrangement the loop in to circulate antifreeze to realize.In addition, in this case, the aperture of adjusting tank flow rate regulating valve 70, the quantity of circulating water of adjustment circulating pump 45, like this, even small-sized thermal storage water tank also can be suppressed to bottom line with the stirring of boundary layer.
Moreover, in the logic of the temperature that described extraneous gas temperature sensor and described supply water temperature sensor detect with under than the situation low by second set point of temperature of running controlling organization 5 decisions, make the running of heat pump refrigerating agent loop, simultaneously, the thermal storage water tank is chased after burn the water circulation of the water pipe arrangement in the loop, antifreeze to realize.In this case,, adjust the quantity of circulating water of circulating pump 45, also the stirring of the boundary layer in the thermal storage water tank can be suppressed to bottom line by the aperture of adjusting tank flow rate regulating valve 70.According to above structure, control, can and the antifreeze mechanism that the region is adopted different water pipe arrangements efficiently be installed according to the installation situation.
[embodiment 5]
Secondly, especially the hot water supply apparatus that is fit to the few hot water supply of number is described.Along with the variation of social variations such as nuclear familyization, few childrenization, unmarried work situation of going to one's post etc., initiation is towards the necessity of the few hot water supply apparatus of number.Be the center particularly, begin not use the safe miniature of fire and the Teat pump hot water supply device of low power consumption with the unmarried resident family of going to one's post.In hot water supply apparatus of the present invention, have and directly go out hot water function, even narrow and do not need the place of special intensity that the storage hot water unit also can be installed, be widely used day by day at the pipeline space of condominium or instrument case etc.; electric hot water supply as the Teat pump hot water supply device or cold, heater unit, culinary art etc. it is desirable in 10kVA or the following contract for delivery electrical capacity of 10kVA from the aspect consideration of running (work) cost all by in the electric complete electrified dwelling house that carries out.
Teat pump hot water supply device of the present invention in order to ensure directly going out the hot water ability, is made as heat pump refrigerating agent loop 2 circulating, suppose and be output as 30kW, even but be 5.0 o'clock at coefficient of refrigerating performance (COP), also need to consume electrical capacity 6kVA, become by the obstacle of popularizing.So,, can guarantee that the Teat pump hot water supply device that directly goes out the hot water ability receives publicity just gradually with 1 compressor as the hot water supply apparatus of the few resident family of unmarried go to one's post resident family or number.Promptly, the hot water supply heating efficiency in heat pump refrigerating agent loop is about 10~15kW, the storage hot water capacity of storage hot water unit is about 20~200L, meets user's life style and selectable hot water supply apparatus, is suitable for unmarried resident family of going to one's post or the few resident family of number.
Teat pump hot water supply device of the present invention is described.Fig. 4 represents directly the going out the hot water ability, went out the hot water ability in 30 minutes continuously, went out the hot water ability continuously in 20 minutes of various Teat pump hot water supply devices, the thermal storage water tank burns the hot time.Direct fan-out capability is illustrated in and does not store hot water in the thermal storage water tank, directly emits the ability of the hot water of water refrigerant heat exchanger heating, and it is little generally to store the hot-water type ability, moment the boiling water formula then ability is big.Went out the hot water ability in 30 minutes continuously, what the hot water that the heating of expression water refrigerant heat exchanger is directly emitted and emitting planned to use in 30 minutes total under the situation of the hot water of storing that finishes in the thermal storage water tank goes out the hot water ability, storage hot water capacity is big more, and this ability is big more.Went out the hot water ability in 20 minutes continuously and also be identical definition, it is bigger that storage hot water capacity went out the hot water ability in big more its 20 minutes continuously.On the other hand, the thermal storage water tank burns the hot time, and the water that the thermal storage water tank is filled with in expression is warming up to the needed time of hot water of set point of temperature, and storage hot water capacity is big more, the hot water supply heating efficiency is more little, then burning heat needs the time more, stores generally in the hot-water type hot water supply apparatus that to burn the hot needed time long.
The direct fan-out capability of Fig. 4, be illustrated in outside air temperature and be in intergrade of 16 ℃, the per minute when 17 ℃ water are heated to 42 ℃ go out the hot water amount, being output as 4.5kW, storing the hot water capacity is in the storage hot-water type of 300L, for less than 3L, and, be about 6L in moment that is output as 10kW in the boiling water type, in moment that is output as 15kW in the boiling water type, be about 9L, in the moment boiling water type, can guarantee clog-free flow using 1 bolt to go out the hot water end.On the contrary, under the situation of storage hot-water type, when the hot water cut-out takes place contingency, can only go out hot water less than 3L by per minute, be fatal defective.In order to prevent this defective, in the storage hot-water type, exceed needs ground and carry out a large amount of hot-water storages for a long time.
And, 30 minutes of Fig. 4 go out the hot water ability continuously, went out the hot water ability in 20 minutes continuously, carry out the calculating that in this time, 65 ℃ hot water in the thermal storage water tank all used, storage hot-water type hot water supply apparatus is best, but about going out the hot water ability in 30 minutes continuously, output 15kW, storage hot water capacity 200L moment boiling water type and the storage hot-water type of storage hot water capacity 300L have the ability of equal extent.At this, in the few resident family of unmarried go to one's post resident family or number, family size is few, it is low to open a plurality of probabilities that go out the hot water end simultaneously, so think that to be that 10L/ divides just no problem if can guarantee to go out continuously in 20 minutes the hot water ability, also can not produce and use difficulty even output 10kW storage hot water capacity is the moment boiling water type hot water supply apparatus of 50L.
And, the thermal storage water tank of Fig. 4 burns the hot time, expression is warming up to 65 ℃ of required times with 17 ℃ of water of trunkful in each output, is that the moment boiling water type of 200L surpasses 1 hour with being output as 10kW storage hot water capacity, but other moment in the boiling water type all within an hour.Relative therewith, the storage hot-water type needs nearly 4 hours, just in case the situation of hot water cutout occurs, can not use hot water in nearly 4 hours time, and this becomes fatal defects.
As mentioned above, in the hot water heating efficiency be about 10~15kW, the storage hot water capacity of storage hot water unit is that moment about 20~200L is in the boiling water type Teat pump hot water supply device, can provide just in time to be suitable for unmarried resident family or the few resident family of number of going to one's post, also be fit to be concerned about save the energy and save the photo-thermal expense family, hot water small-sized, light weight holds to device.Particularly, for evening time of going home, at night after 10, hot water fills with in the unmarried resident family of going to one's post of a large amount of hot water of uses such as bath, by the night expense of effective utilization, can obtain and store the same cheap operating cost of hot-water type by the electric power contract of time band.
[embodiment 6]
Secondly, under the situation of cold-producing medium as carbon dioxide of using in the heat pump refrigerating agent loop 1 of Fig. 1, as the carbon dioxide gas of cold-producing medium, body is compressed by compressor 11a, 11b, pressure and temperature is the critical pressure of carbon dioxide, supercriticality more than the critical-temperature.As everyone knows, this high temperature refrigerant and the water that is heated fluid are carried out under the situation of heat exchange, from between the refrigerant inlet and refrigerant outlet of the cold-producing medium heat-transfer pipe of water refrigerant heat exchanger 14, and between the water supply inlet and water supply outlet of water supply heat-transfer pipe, the temperature difference that adds the cold-producing medium of hot fluid and be heated between the water of fluid is roughly even at each several part, heats very efficiently.Like this, the carbon dioxide of the heating by will being suitable for being heated fluid uses as cold-producing medium, and the present invention just can obtain better effect.

Claims (8)

1. a Teat pump hot water supply device is characterized in that,
Have:
Heating unit, it has and utilizes non-add heating arrangements that hot water heat and the control loop of control this heating arrangements of heat pump cycle to being supplied with; With
The storage hot water unit, it has: the non-supply hot-water return that adds hot water in hot water and the described thermal storage water tank, supplies with the hot water of the temperature of instructing based on described control loop that connects the non-hot water export mouth of the thermal storage water tank possess temperature sensor and feed pipe and utilize that described heating arrangements heated;
By non-ly adding the hot water pipe arrangement, adding the hot water pipe arrangement and be connected described heating unit and described storage hot water unit with the control wiring.
2. according to the Teat pump hot water supply device described in the claim 1, it is characterized in that,
Described heating unit has to heating arrangements and supplies with the non-non-heating pump that adds hot water;
Described control loop, not from described hot water supply loop go out hot water the time, drive described non-heating pump, the hot water in the described thermal storage water tank is heated.
3. a Teat pump hot water supply device is characterized in that,
Have:
Heat pump refrigerating agent loop, it connects respectively by refrigerant tubing: compressor, carry out decompressor that reduces pressure by the water refrigerant heat exchanger of the cold-producing medium of this compressor compresses and the heat exchange between water, to the cold-producing medium after the heat exchange and the evaporimeter that carries out the heat exchange between post-decompression cold-producing medium and air;
The hot water supply loop, it connects by waterpipe: feed water inlet, the by-passing valve that the water of supplying with is distributed, water supply check valve, the described water refrigerant heat exchanger that the water that distributes is heated and the hot-water outlet by the 1st flow rate regulating valve output heated hot water;
Water supply loop, it connects by waterpipe: described feed water inlet, described by-passing valve and the stream that makes the residual hydration stream that is distributed between described the 1st flow rate regulating valve in described hot water supply loop and described hot-water outlet;
The thermal storage water tank chases after and burns the loop, and it connects by waterpipe: branch's pipe arrangement of telling from described hot water supply loop, the thermal storage water tank who connects by the 2nd flow rate regulating valve, between the by-passing valve in described hot water supply loop and water supply check valve, make from described thermal storage water tank's bottom the hot water interflow stream, with the water supply check valve in the described hot water supply loop circulating pump that is connected arranged side by side and the water refrigerant heat exchanger in described hot water supply loop;
Control loop;
Bathing pool remote controller and kitchen remote controller; And
Each sensor;
Constitute by the running controlling organization, this running controlling organization is according to the operating and setting of described each remote controller and the detected value of each sensor, and the described heat pump refrigerating agent of described control loop running control loop, hot water supply loop, water supply loop, thermal storage water tank chase after the parts that burn the loop;
This Teat pump hot water supply device,
Have:
Directly go out hot water function, its open out the hot water end during, the water that enters from the feed water inlet in described hot water supply loop is heated by the water refrigerant heat exchanger in described heat pump refrigerating agent loop and is supplied with by described hot-water outlet;
Case goes out hot water function, its open out the hot water end during, supply with the hot water that is stored in the described thermal storage water tank from described hot-water outlet; With
Go out hot water function simultaneously, it will directly go out hot water and case and go out two kinds of hot water and go out hot water and merge, and supply with from described hot-water outlet;
By water supply side connecting pipings, hot water supply side connecting pipings, low-voltage control pipe arrangement, be connected with:
Heat source unit, its by: the water supply check valve in described heat pump refrigerating agent loop, described hot water supply loop and water refrigerant heat exchanger, described thermal storage water tank chase after the control loop of the circulating pump that burns the loop, described running controlling organization and each sensor constitutes; With
The storage hot water unit, its by: instruction directly goes out hot water and case and goes out hot water and go out described hot water supply loop, described water supply loop, described thermal storage water tank that hot water switches simultaneously to chase after each sensor that burns loop, described running controlling organization and constitute according to described running controlling organization.
4. Teat pump hot water supply device according to claim 1 is characterized in that,
Have by storage hot water capacity set mechanism, it sets the storage hot water capacity of storage hot water unit;
Continuous peak load storing mechanism, the load the most greatly of the hot water that its storage is supplied with continuously; With
Directly go out hot water ability arithmetical organ, it calculates the needed hot water ability that directly goes out;
The heat pump ability of heat source unit is set at the heat pump ability set mechanism of setting, controls compressor operation platform number and compressor revolution.
5. Teat pump hot water supply device according to claim 1 is characterized in that,
Have: the circulating pump controlling organization, its pressure loss with the water pipe arrangement that is connected storage hot water unit and heat source unit is irrelevant, the water internal circulating load of circulating pump is controlled to be the internal circulating load of regulation of two layers of distribution of the temperature that does not upset in the thermal storage water tank.
6. Teat pump hot water supply device according to claim 1 is characterized in that,
Temperature or be trapped in the temperature of water that the thermal storage water tank chases after in the waterpipe that burns the loop and drop to externally than under the low situation of first set point of temperature, the water circulation that described thermal storage water tank is chased after burn the loop, dropping under the situation that is lower than second set point of temperature also lower than first set point of temperature, make the running of heat pump refrigerating agent loop, the antifreeze of water in the waterpipe carried out in the water circulation that described thermal storage water tank is chased after burn the loop.
7. Teat pump hot water supply device according to claim 1 is characterized in that,
The heating efficiency of the heat source unit of described Teat pump hot water supply device is 10~15kW, and the storage hot water capacity of storage hot water unit is 20~200L.
8. according to any described Teat pump hot water supply device of claim 1 to 5, it is characterized in that the cold-producing medium that uses in the described heat pump refrigerating agent loop is carbon dioxide.
CNB2005100554291A 2004-12-03 2005-03-17 Teat pump hot water supply device Expired - Fee Related CN100441977C (en)

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CN102308155B (en) * 2009-02-13 2014-01-08 东芝开利株式会社 Secondary pump type heat source system and secondary pump type heat source control method
CN107003011A (en) * 2014-09-02 2017-08-01 瑞美制造公司 Heated for mixing water and air cooling and its apparatus and method controlled

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JP2003247748A (en) * 2002-02-25 2003-09-05 Matsushita Electric Ind Co Ltd Heat pump type hot water supply unit
JP3742356B2 (en) * 2002-03-20 2006-02-01 株式会社日立製作所 Heat pump water heater
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CN102308155B (en) * 2009-02-13 2014-01-08 东芝开利株式会社 Secondary pump type heat source system and secondary pump type heat source control method
CN107003011A (en) * 2014-09-02 2017-08-01 瑞美制造公司 Heated for mixing water and air cooling and its apparatus and method controlled

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