EP2597381B1 - Vorrichtung zur Abgabe von kaltem/heißem Wasser - Google Patents

Vorrichtung zur Abgabe von kaltem/heißem Wasser Download PDF

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Publication number
EP2597381B1
EP2597381B1 EP12191271.1A EP12191271A EP2597381B1 EP 2597381 B1 EP2597381 B1 EP 2597381B1 EP 12191271 A EP12191271 A EP 12191271A EP 2597381 B1 EP2597381 B1 EP 2597381B1
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EP
European Patent Office
Prior art keywords
fluid
heat
heat exchanger
operation mode
temperature
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EP12191271.1A
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English (en)
French (fr)
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EP2597381A3 (de
EP2597381A2 (de
Inventor
Yasuhiko Isayama
Shigeo Aoyama
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Panasonic Corp
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Panasonic Corp
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Publication of EP2597381A3 publication Critical patent/EP2597381A3/de
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
    • F24F5/0096—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater combined with domestic apparatus
    • 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
    • F24D11/00—Central heating systems using heat accumulated in storage masses
    • F24D11/02—Central heating systems using heat accumulated in storage masses using heat pumps
    • F24D11/0214—Central heating systems using heat accumulated in storage masses using heat pumps water heating system
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D17/00—Domestic hot-water supply systems
    • F24D17/02—Domestic hot-water supply systems using heat pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D19/00—Details
    • F24D19/10—Arrangement or mounting of control or safety devices
    • F24D19/1006—Arrangement or mounting of control or safety devices for water heating systems
    • F24D19/1051—Arrangement or mounting of control or safety devices for water heating systems for domestic hot water
    • F24D19/1054—Arrangement or mounting of control or safety devices for water heating systems for domestic hot water the system uses a heat pump
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/02—Self-contained room units for air-conditioning, i.e. with all apparatus for treatment installed in a common casing
    • F24F1/032—Self-contained room units for air-conditioning, i.e. with all apparatus for treatment installed in a common casing characterised by heat exchangers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F24F11/63—Electronic processing
    • F24F11/65—Electronic processing for selecting an operating mode
    • F24F11/67—Switching between heating and cooling modes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F24F11/63—Electronic processing
    • F24F11/65—Electronic processing for selecting an operating mode

Definitions

  • the present invention relates to a cold/hot water supply apparatus for carrying out air conditioning in an indoor space using a heat pump and for accumulating heat in a heat accumulator tank.
  • Document Wo 2011/104877 is the prior art closest to the present invention, and discloses a cold/hot water supply apparatus comprising: a refrigerant circuit formed by annularly connecting, to one another, a compressor, a first heat exchanger, decompressing means and a second heat exchanger, and a refrigerant flowing through the refrigerant circuit; a fluid circuit formed by annularly connecting, to one another, circulating means, the first heat exchanger, a fluid path switching means and a third heat exchanger, and fluid flowing through the fluid circuit; a heat accumulation circuit which branches off from the fluid circuit through the fluid path switching means, and which is connected to the fluid circuit between the third heat exchanger and the first heat exchanger through a heat accumulator tank; a temperature sensor which detects a temperature of fluid heated by the first heat exchanger; and
  • Fig. 6 shows a refrigeration cycle apparatus 100 which carries out an air conditioning operation in an indoor space and accumulates heat in a heat accumulator tank 300.
  • the refrigeration cycle apparatus 100 includes a refrigerant circuit 110 through which refrigerant circulates, a compressor 111, a four-way valve 112, a first heat exchanger 113, expansion means 114 and a air convection body heat exchanger 115, and these members are annularly connected to one another through pipes.
  • the first heat exchanger 113 includes a refrigerant circuit 110 and a fluid circuit 210.
  • the fluid circuit 210 includes a first heat exchanger 113, circulation means 220 and a fluid path-switching valve 230. Fluid flowing through the fluid circuit 210 flows to a third heat exchanger 400 or a heat accumulator tank 300 by switching operation of the fluid path-switching valve 230.
  • the third heat exchanger 400 is a fan coil unit having a heat exchanger and a blast fan.
  • low temperature fluid is produced in the first heat exchanger 113.
  • This low temperature fluid flows to the third heat exchanger 400 through the fluid path-switching valve 230, absorbs heat from the indoor space by the third heat exchanger 400, cools the indoor space and then, returns into the first heat exchanger 113.
  • the refrigeration cycle apparatus 100 switches the four-way valve 112. According to this, the refrigerant flows in a direction opposite from that of the cooling operation mode. Therefore, in the case of the heat-accumulation operation mode, high temperature fluid is produced in the first heat exchanger 113. This high temperature fluid flows to the heat accumulator tank 300 through the fluid path-switching valve 230, dissipates heat in the heat accumulator tank 300 and then, returns to the first heat exchanger 113. Hot water heated in the heat accumulator tank 300 is supplied.
  • the cooling operation mode is switched to the heat-accumulation operation mode and the heat-accumulation operation mode is switched to the cooling operation mode by switching the fluid path-switching valve 230.
  • the low temperature fluid and the high temperature fluid produced by the first heat exchanger 113 are conveyed by switching the fluid path-switching valve 230.
  • fluid which flows out of the first heat exchanger 113 cools an indoor space in the case of the cooling operation mode, and heats water in the heat accumulator tank 300 in the case of the heat-accumulation operation mode.
  • Patent Document 1 Specification of EPC Patent Application Publication No. 2204620
  • the heat accumulator tank 300 is cooled and a temperature thereof is lowered immediately after the operation mode is switched to the heat-accumulation operation mode. Since the heat accumulator tank 300 whose temperature is lowered is heated by the heat pump, it takes time to heat the heat accumulator tank 300, and energy utilizing efficiency is deteriorated.
  • the present invention has been accomplished to solve the conventional problem, and it is an object of the present invention to provide a cold/hot water supply apparatus capable of suppressing reduction of a temperature (accumulated heat amount) of a heat accumulator tank caused by low temperature fluid and capable of reducing energy loss when a cooling operation mode is switched to a heat-accumulation operation mode.
  • the present invention provides a cold/hot water supply apparatus comprising: a refrigerant circuit formed by annularly connecting, to one another, a compressor, a first heat exchanger, decompressing means and a second heat exchanger, and a refrigerant flowing through the refrigerant circuit; a fluid circuit formed by annularly connecting, to one another, circulating means, the first heat exchanger, a fluid path switching means and a third heat exchanger, and fluid flowing through the fluid circuit; a heat accumulation circuit which branches off from the fluid circuit through the fluid path switching means, and which is connected to the fluid circuit between the third heat exchanger and the first heat exchanger through a heat accumulator tank; a temperature sensor which detects a temperature of fluid heated by the first heat exchanger; and a control apparatus which switches between a flow of the fluid to the third heat exchanger and a flow of the fluid to the heat accumulator tank; in which the cold/hot water supply apparatus has a heat-accumulation operation mode for flowing the fluid to the heat accumulation
  • the present invention also provides a cold/hot water supply apparatus comprising: a refrigerant circuit formed by annularly connecting, to one another, a compressor, a first heat exchanger, decompressing means and a second heat exchanger, and a refrigerant flowing through the refrigerant circuit; a fluid circuit formed by annularly connecting, to one another, circulating means, the first heat exchanger, a fluid path switching means and a third heat exchanger, and fluid flowing through the fluid circuit; a heat accumulation circuit which branches off from the fluid circuit through the fluid path switching means, and which is connected to the fluid circuit between the third heat exchanger and the first heat exchanger through a heat accumulator tank; a temperature sensor which detects a temperature of fluid heated by the first heat exchanger; and a control apparatus which switches between a flow of the fluid to the third heat exchanger and a flow of the fluid to the heat accumulator tank; in which the cold/hot water supply apparatus has a heat-accumulation operation mode for flowing the fluid to the heat accumulation circuit to heat water
  • fluid in the first heat exchanger is heated and conveyed to the heat accumulator tank. Thereafter, when the fluid temperature becomes equal to or higher than the predetermined temperature, it is determined that even if fluid flows into the heat accumulator tank, hot water in the heat accumulator tank is not cooled, and the heated fluid is made to flow into the heat accumulator tank.
  • the circulating means is intermittently operated, thereby suppressing a volume of low temperature fluid conveyed to the heat accumulator tank to a volume existing in a connection pipe between an outlet of the first heat exchanger and the fluid path switching valve. Even if the fluid temperature is lower than the predetermined temperature, the volume of low temperature fluid conveyed to the heat accumulator tank is reduced as compared with the conventional technique.
  • a cold/hot water supply apparatus capable of suppressing reduction in a temperature (accumulated heat amount) of a heat accumulator tank caused by low temperature fluid and capable of reducing energy loss when a cooling operation mode is switched to a heat-accumulation operation mode.
  • the control apparatus when it is requested to change an operation mode from the cooling operation mode to the heat-accumulation operation mode and the fluid temperature detected by the temperature sensor is lower than a predetermined temperature, the control apparatus continues the cooling operation mode.
  • the control apparatus when it is requested to change the operation mode from the cooling operation mode to the heat-accumulation operation mode and the fluid temperature detected by the temperature sensor is equal to or higher than the predetermined temperature, switches the operation mode from the cooling operation mode to the heat-accumulation operation mode.
  • the control apparatus after the cooling operation mode is changed to the heat-accumulation operation mode, when the fluid temperature detected by the temperature sensor is equal to or higher than a predetermined temperature, the control apparatus continues the heat-accumulation operation mode, and when the fluid temperature detected by the temperature sensor is lower than the predetermined temperature, the control apparatus changes the operating action of the circulating means, and stops the circulation of the fluid or reduces the circulation amount of the fluid.
  • fluid in the first heat exchanger is heated and conveyed to the heat accumulator tank. Thereafter, when the fluid temperature becomes equal to or higher than the predetermined temperature, it is determined that even if fluid flows into the heat accumulator tank, hot water in the heat accumulator tank is not cooled, and the heated fluid is made to flow into the heat accumulator tank.
  • the circulating means is intermittently operated, thereby suppressing a volume of low temperature fluid conveyed to the heat accumulator tank to a volume existing in a connection pipe between an outlet of the first heat exchanger and the fluid path switching valve. Even if the fluid temperature is lower than the predetermined temperature, the volume of low temperature fluid conveyed to the heat accumulator tank is reduced as compared with the conventional technique.
  • a cold/hot water supply apparatus according to a first embodiment of the present invention will be described using Figs. 1 to 3 .
  • Figs. 1 to 2 are schematic block diagrams of the cold/hot water supply apparatus of the embodiment.
  • Fig. 1 is a schematic block diagram showing a flow of fluid in a cooling operation mode
  • Fig. 2 is a schematic block diagram showing a flow of fluid when the cooling operation mode is switched to a heat-accumulation operation mode
  • Fig. 3 is a schematic block diagram showing a flow of fluid in the heat-accumulation operation mode
  • Fig. 4 is a flowchart of an operating action of the cold/hot water supply apparatus of the embodiment.
  • FIG. 1 A configuration of the cold/hot water supply apparatus of the embodiment will be described using Fig. 1 .
  • the cold/hot water supply apparatus 10 includes a refrigeration cycle apparatus 1, a fluid circuit 5, a third heat exchanger 53 and a heat accumulator tank 55.
  • the refrigeration cycle apparatus 1 includes a refrigerant circuit 2 through which refrigerant circulates.
  • refrigerant it is possible to use pseudo-azeotropic mixture refrigerant such as R410A and single refrigerant such as R32.
  • the refrigerant circuit 2 includes a compressor 21, a first heat exchanger 22, an expansion means 23 and a second heat exchanger 24 and these members are annularly connected to one another through pipes.
  • the first heat exchanger 22 exchanges heat between refrigerant and fluid.
  • An expansion valve or a capillary tube is used as the expansion means 23.
  • the second heat exchanger 24 exchanges heat between refrigerant and air.
  • an accumulator 26 which separates gas and liquid from each other is provided in an inflow side pipe of the compressor 21.
  • the heat accumulator tank 55 is heated.
  • the third heat exchanger 53 absorbs heat.
  • the refrigerant circuit 2 is provided with a four-way valve 25 which switches between the heat-accumulation operation mode and the cooling operation mode.
  • the refrigeration cycle apparatus 1 configures a low temperature water producing apparatus.
  • This low temperature water producing apparatus utilizes low temperature fluid produced by the first heat exchanger 22 for absorbing heat by the third heat exchanger 53, and utilizes high temperature fluid produced by the first heat exchanger 22 for heating the heat accumulator tank 55.
  • the first heat exchanger 22 exchanges heat between refrigerant and fluid.
  • the fluid circuit 5 includes an inflow pipe 51, a first heat exchanger 22, an outflow pipe 52, a fluid path switching valve 60, a third heat exchanger 53, and circulating means 54.
  • the fluid circuit 5 also includes a heat accumulation circuit 62 and a control apparatus 4.
  • the heat accumulation circuit 62 branches off from the fluid path switching valve 60, and is connected to the fluid circuit 5 between the first heat exchanger 22 and the third heat exchanger 53 through a heat accumulator tank 55.
  • a temperature sensor 70 which detects a fluid temperature is disposed in the first heat exchanger 22.
  • Fig. 1 shows, with arrows, a flow direction of refrigerant and fluid in the cooling operation mode.
  • the fluid path-switching valve 60 is switched by the control apparatus 4 such that fluid flows to the third heat exchanger 53.
  • High pressure gas refrigerant discharged from the compressor 21 flows into the second heat exchanger 24 through the four-way valve 25, and dissipates heat of condensation and condenses. High pressure liquid refrigerant cooled by the condensation flows out from the second heat exchanger 24.
  • High pressure liquid refrigerant which flows out of the second heat exchanger 24 is decompressed and expanded by the expansion means 23 and then, the refrigerant flows into the first heat exchanger 22.
  • Low pressure air-liquid two-phase refrigerant which flows into the first heat exchanger 22 absorbs vaporization heat from the fluid and evaporates, and becomes low pressure two-phase refrigerant or overheated refrigerant and flows out of the first heat exchanger 22.
  • the low pressure refrigerant which flows out of the first heat exchanger 22 passes through the four-way valve 25, gas and liquid are separated from each other by the accumulator 26, and gas-phase refrigerant is sucked into the compressor 21.
  • Fluid cooled by the first heat exchanger 22 flows through the outflow pipe 52, and flows into the third heat exchanger 53 disposed in an indoor space through the flow path switching valve 60.
  • the fluid absorbs heat from the third heat exchanger 53, flows into the inflow pipe 51 through the circulation means 54, and flows into the first heat exchanger 22 and is circulated.
  • the control device 4 controls to switch the fluid path-switching valve 60 to the switching pipe 62 or the third heat exchanger 53.
  • a heat-accumulation operation in which fluid heats the heat accumulator tank 55 is requested, a high pressure refrigerant discharged from the compressor 21 flows into the first heat exchanger 22 through the four-way valve 25, and heats fluid which flows through the first heat exchanger 22.
  • the fluid is water or antifreeze.
  • High pressure liquid refrigerant which flows out of the first heat exchanger 22 is decompressed and expanded by the expansion means 23 and then flows into the second heat exchanger 24.
  • the low pressure two-phase refrigerant which flows into the second heat exchanger 24 absorbs vaporization heat from air and evaporates, and becomes low pressure two-phase refrigerant or overheated refrigerant, and flows out of the second heat exchanger 24.
  • the low pressure refrigerant which flows out of the second heat exchanger 24 passes through the four-way valve 25 and gas and liquid are separated from each other by the accumulator 26 and then, the gas-phase refrigerant is sucked into the compressor 21.
  • High temperature fluid is produced in the first heat exchanger 22 by the above-described operation.
  • the high temperature fluid produced in the first heat exchanger 22 flows out from the outflow pipe 52.
  • Fig. 2 shows, with arrows, a flow direction of fluid in the heat-accumulation operation mode.
  • the flow path switching valve 60 is switched to the third heat exchanger 53 to maintain the cooling operation mode. If the fluid temperature Tw is equal to or higher than the predetermined temperature To, the fluid path switching valve 60 is switched to the heat accumulation circuit 62 to circulate fluid through the first heat exchanger 22 and the heat accumulation circuit 62.
  • the predetermined temperature To is set to 20 degrees Celsius in this embodiment also.
  • the control apparatus 4 controls the fluid path-switching valve 60 based on temperature detected by the temperature sensor 70.
  • control apparatus 4 determines whether heat accumulation driving is requested (step 1). If the heat accumulation driving is not requested, the current state is maintained, and if the heat accumulation driving is requested, the temperature sensor 70 in the first heat exchanger 22 detects the fluid temperature Tw (step 2), and compares the fluid temperature Tw and the predetermined temperature To with each other (step 3).
  • the fluid temperature Tw is equal to or higher than the predetermined temperature To, it is determined that a possibility that the low temperature fluid flows through the first switching pipe 62 to absorb heat from the heat accumulator tank 55 and to cool the heat accumulator tank 55 is low, and the fluid path-switching valve 60 is switched from the third heat exchanger 53 to the first switching pipe 62 (step 5).
  • the control apparatus 4 continues the current state until the heat accumulation driving is requested (step 1).
  • the cooling operation mode when it is requested to change the operation mode from the cooling operation mode in which the third heat exchanger 53 absorbs heat to the heat-accumulation operation mode in which fluid flowing through the fluid path switching valve 60 heats the heat accumulator tank 55 and when the fluid temperature Tw detected by the temperature sensor 70 is lower than the predetermined temperature To, the cooling operation mode is maintained.
  • the fluid path switching valve 60 is switched to the heat accumulation circuit 62 to make fluid circulate through the first heat exchanger 22 and the heat accumulation circuit 62.
  • Fig. 4 is a flowchart of an operating action of a cold/hot water supply apparatus according to a second embodiment of the present invention.
  • the control apparatus 4 controls the flow path switching valve 60 based on a temperature detected by the temperature sensor 70. Control of the control apparatus 4 will be explained with reference to the flowchart shown in Fig. 4 .
  • the same constituent parts as those of the first embodiment are designated with the same symbols, and explanation thereof will be omitted.
  • control apparatus 4 determines whether the heat-accumulation operation is requested (step 1). When the heat-accumulation operation is not requested, the current state is maintained, and when the heat-accumulation operation is requested, the flow path switching valve 60 is switched from the third heat exchanger 53 to the heat accumulation circuit 62 (step 2).
  • the temperature sensor 70 in the first heat exchanger 22 detects the fluid temperature Tw (step 3), and compares the fluid temperature Tw and the predetermined temperature To with each other (step 4).
  • fluid is made to circulate between the first heat exchanger 22 and the heat accumulation circuit 62.
  • the predetermined flow rate Go is a flow rate smaller than that of a rating operation.
  • the predetermined flow rate Go is set to 1/10 of the rating operation for example.
  • the temperature sensor 70 in the first heat exchanger 22 detects the fluid temperature Tw (step 6), and compares the fluid temperature Tw and the predetermined temperature To with each other (step 7).
  • the circulation amount in the fluid circuit 5 is set to the predetermined flow rate Go or higher (step 8), and heated fluid is made to flow into the heat accumulator tank 55.
  • the control apparatus 4 maintains the current state until the heat-accumulation operation is requested (step 1).
  • the circulating means 54 is intermittently operated, the current state is maintained, and the fluid temperature Tw is detected (step 6).
  • the cooling operation mode in which the third heat exchanger 53 absorbs heat is changed to the heat-accumulation operation mode in which fluid which flows through the fluid path switching valve 60 heats the heat accumulator tank 55
  • the fluid temperature Tw detected by the temperature sensor 70 is equal to or higher than the predetermined temperature To
  • the fluid is made to circulate between the first heat exchanger 22 and the heat accumulation circuit 62, and if the fluid temperature Tw detected by the temperature sensor 70 is lower than the predetermined temperature To, the operating action of the circulating means 54 is stopped or the circulation amount in the fluid circuit 5 is reduced.
  • fluid in the first heat exchanger 22 is heated and conveyed to the heat accumulator tank 55. Thereafter, if the fluid temperature Tw becomes equal to or higher than the predetermined temperature To, it is determined that even if fluid flows into the heat accumulator tank 55, hot water in the heat accumulator tank 55 is not cooled, and the heated fluid is made to flow into the heat accumulator tank 55.
  • the circulating means 54 is intermittently operated, thereby suppressing a volume of low temperature fluid conveyed to the heat accumulator tank 55 to a volume existing in a connection pipe between an outlet of the first heat exchanger 22 and the fluid path switching valve 60. Even if the fluid temperature Tw is lower than the predetermined temperature To, the volume of low temperature fluid conveyed to the heat accumulator tank 55 is reduced as compared with the conventional technique.
  • Fig. 5 shows a cold/hot water supply apparatus according to a third embodiment of the present invention.
  • the same constituent parts as those of the first and second embodiments are designated with the same symbols, and explanation thereof will be omitted.
  • a heat accumulator tank temperature sensor 71 for detecting a temperature of the heat accumulator tank 55 is provided.
  • the predetermined temperature To is set equal to or lower than a temperature of the heat accumulator tank 55.
  • the predetermined temperature To of fluid is set lower than a temperature of the heat accumulator tank 55 when the heat-accumulation operation mode is started. Therefore, even if an operation condition is varied, time during which the operation state of the circulating means 54 is stopped or a circulation amount is reduced can be minimized.
  • the present invention when the cooling operation mode is switched to the heat-accumulation operation mode, it is possible to suppress reduction of a temperature (accumulated heat amount) of the heat accumulator tank caused by low temperature fluid, and energy loss can be reduced. Therefore, the present invention can be applied also to a cold/hot water supply heating apparatus which heats fluid and utilizes the fluid for heating an indoor space.

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  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Signal Processing (AREA)
  • Mathematical Physics (AREA)
  • Fuzzy Systems (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Heat-Pump Type And Storage Water Heaters (AREA)
  • Air Conditioning Control Device (AREA)

Claims (3)

  1. Vorrichtung (10) zur Kalt-/Warmwasserversorgung, enthaltend:
    einen Kühlkreislauf (2), welcher gebildet ist durch zueinander ringförmiges Verbinden von einem Kompressor (21), einem ersten Wärmetauscher (22), einem Dekompressionsmittel (23) und einem zweiten Wärmetauscher (24) und einem Kältemittel, welches durch den Kühlkreislauf fließt;
    einen Fluidkreislauf (5), welcher gebildet ist durch zueinander ringförmiges Verbinden von einem Zirkulationsmittel (54), dem ersten Wärmetauscher (22), einem Mittel (60) zum Wechseln des Fluidpfades und einem dritten Wärmetauscher (53) und einem Fluid, welches durch den Fluidkreislauf fließt;
    einen Wärmespeicherkreislauf (62), welcher durch das Mittel (60) zum Wechseln des Fluidpfades von dem Fluidkreislauf abzweigt und welcher mit dem Fluidkreislauf zwischen dem dritten Wärmetauscher (53) und dem ersten Wärmetauscher (22) durch einen Wärmespeichertank (55) verbunden ist;
    einen Temperatursensor (70), welcher eine Temperatur eines Fluides ermittelt, welches von dem ersten Wärmetauscher (22) erwärmt wird; und
    eine Steuervorrichtung (4), welche zwischen einem Durchfluss des Fluides zu dem dritten Wärmetauscher (53) und einem Durchfluss des Fluides zu dem Wärmespeichertank (55) wechselt, in welchem
    die Vorrichtung (10) zur Kalt-/Warmwasserversorgung einen wärmespeichernden Betriebsmodus aufweist, um das Fluid zu dem Wärmespeicherkreislauf (62) zum Erwärmen von Wasser in dem Wärmespeichertank fließen zu lassen; und
    einen Kühlbetriebsmodus, um das Fluid zum Aufnehmen von Wärme aus der Luft zu dem dritten Wärmetauscher (53) fließen zu lassen, wobei,
    wenn es erwünscht ist, einen Betriebsmodus von dem Kühlbetriebsmodus in den Wärmespeicherbetriebsmodus zu wechseln und die Fluidtemperatur, welche von dem Temperatursensor (70) ermittelt wird, kleiner als eine vorgegebene Temperatur ist, die Steuervorrichtung (4) den Kühlbetriebsmodus beibehält.
  2. Vorrichtung (10) zur Kalt-/Warmwasserversorgung nach Anspruch 1, wobei, wenn es erwünscht ist, den Betriebsmodus von dem Kühlbetriebsmodus in den Wärmespeicherbetriebsmodus zu wechseln und die Fluidtemperatur, welche von dem Temperatursensor (70) ermittelt wird, gleich oder höher als die vorgegebene Temperatur ist, die Steuervorrichtung (4) den Betriebsmodus von dem Kühlbetriebsmodus in dem Wärmespeicherbetriebsmodus wechselt.
  3. Vorrichtung (10) zur Kalt-/Warmwasserversorgung, enthaltend:
    einen Kühlkreislauf (2), welcher gebildet ist durch zueinander ringförmiges Verbinden von einem Kompressor (21), einem ersten Wärmetauscher (22), einem Dekompressionsmittel (23) und einem zweiten Wärmetauscher (24) und einem Kältemittel, welches durch den Kühlkreislauf fließt;
    einen Fluidkreislauf (5), welcher gebildet ist durch zueinander ringförmiges Verbinden von einem Zirkulationsmittel (54), dem erstem Wärmetauscher (22), einem Mittel (60) zum Wechseln des Fluidpfades und einem dritten Wärmetauscher (53) und einem Fluid, welches durch den Fluidkreislauf fließt;
    einen Wärmespeicherkreislauf (62), welcher durch das Mittel (60) zum Wechseln des Fluidpfades von dem Fluidkreislauf abzweigt und welcher durch einen Wärmespeichertank (55) mit dem Fluidkreislauf zwischen dem dritten Wärmetauscher (53) und dem ersten Wärmetauscher (22) verbunden ist;
    einen Temperatursensor (70), welcher eine Temperatur eines Fluides ermittelt, welches von dem ersten Wärmetauscher (22) erwärmt wird; und
    eine Steuervorrichtung (4), welche zwischen einem Durchfluss des Fluides zu dem dritten Wärmetauscher (53) und einem Durchfluss des Fluides zu dem Wärmespeichertank (55) umschaltet; wobei
    die Vorrichtung (10) zur Kalt-/Warmwasserversorgung einen Wärmespeicherbetriebsmodus aufweist, um das Fluid zum Aufwärmen von Wasser in dem Wärmespeichertank (55) zu dem Wärmespeicherkreislauf (62) fließen zu lassen, und
    einen Kühlbetriebsmodus, um das Fluid zum Aufnehmen von Wärme aus der Luft zu dem dritten Wärmetauscher (53) fließen zu lassen, wobei
    nachdem der Kühlbetriebsmodus in den Wärmespeicherbetriebsmodus gewechselt wird, wenn die Fluidtemperatur, welche von dem Temperatursensor (70) ermittelt wird, gleich oder höher einer vorgegebenen Temperatur ist, die Steuervorrichtung (4) den Wärmespeicherbetriebsmodus beibehält und wenn die Fluidtemperatur, welche von dem Temperatursensor (70) ermittelt wird, kleiner als die vorgegebene Temperatur ist, die Steuervorrichtung (4) die Betriebsweise des Zirkulationsmittels (54) ändert und die Zirkulation des Fluides stoppt oder die Zirkulationsmenge des Fluides reduziert.
EP12191271.1A 2011-11-14 2012-11-05 Vorrichtung zur Abgabe von kaltem/heißem Wasser Active EP2597381B1 (de)

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EP2597381A2 (de) 2013-05-29

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