EP2034248A1 - Wärmepumpen-heisswasserversorgungssystem - Google Patents

Wärmepumpen-heisswasserversorgungssystem Download PDF

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Publication number
EP2034248A1
EP2034248A1 EP07744588A EP07744588A EP2034248A1 EP 2034248 A1 EP2034248 A1 EP 2034248A1 EP 07744588 A EP07744588 A EP 07744588A EP 07744588 A EP07744588 A EP 07744588A EP 2034248 A1 EP2034248 A1 EP 2034248A1
Authority
EP
European Patent Office
Prior art keywords
water
heat exchanger
heat
heat source
hot water
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP07744588A
Other languages
English (en)
French (fr)
Inventor
Eiji c/o Toshiba Carrier Corporation KUWAHARA
Yasuhiro c/o Toshiba Carrier Corporation SHIMMA
Naotaka c/o Toshiba Carrier Corporation UNNO
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Carrier Japan Corp
Original Assignee
Toshiba Carrier Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Toshiba Carrier Corp filed Critical Toshiba Carrier Corp
Publication of EP2034248A1 publication Critical patent/EP2034248A1/de
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D17/00—Domestic hot-water supply systems
    • F24D17/02—Domestic hot-water supply systems using heat pumps

Definitions

  • the present invention relates to a heat pump water heating system.
  • the heat pump water heating system is configured as a combination of a refrigeration cycle including a compression machine (as a compressor), a four-way valve, a water heat exchanger (as a condenser), an expansion valve, and a heat source end heat exchanger (as an evaporator) being connected in series, and a water cycle including a hot water storage tank and a pump being connected to the water heat exchanger.
  • a heat pump heat source unit 110 that constitutes a refrigeration cycle and a hot water storage tank unit 120 that constitutes a water cycle are interconnected by water lines 130.
  • a refrigerant in a gaseous state is rendered high-temperature high-pressure by exertion of pressures at a compressor 111, and supplied through a four-way valve 112 to a water heat exchanger 113.
  • water is supplied from a water service, and as shown by a broken-line arrow, is sent from a combination of a pressure reducing valve 121 and a hot water storage tank 122 constituting a hot water storage tank unit 120, to the water heat exchanger 113, by a pump 123.
  • heat exchange is performed between refrigerant and water.
  • heat of refrigerant heats water supplied to the water heat exchanger 113 by the pump 123, and the refrigerant is cooled with this water, changing from gas to liquid. Heated water becomes hot water, which is stored in the hot water storage tank 122. Further, this hot water is supplied through a mixing valve 124 to a bathroom, for instance.
  • the refrigerant having been deprived of heat by the water heat exchanger 113 and changed to liquid is let through an expansion valve 115 and a heat source end heat exchanger, where it is changed again to gas, to repeat the foregoing cycle.
  • the heat pump heat source unit 110 might have been integrated with the hot water storage tank unit 120 to install together in an instrument panel.
  • the heat source end heat exchanger would have a deteriorated performance due to insufficient ventilation of air in the instrument panel, with a reduced efficiency of the heat pump heat source unit 110.
  • the present invention has been devised to solve the problems described, and it is an object of the present invention to provide a heat pump water heating system including rearranged combinations of constituent components of heat pump water heating system, thereby permitting the freedom of installation to be secured and enhanced, allowing for installation free of performance deterioration of components, without causing disfigurement.
  • a heat pump water heating system includes a refrigerant circuit having a compression machine, a four-way valve, a water heat exchanger, an expansion valve, and a heat source end heat exchanger being piping-connected in series, and a hot water storage tank connected to a water circuit of the water heat exchanger for supply and storage of hot water generated at the water heat exchanger, and comprises a main unit configured with a heat source unit having at least the compression machine, the four-way valve, and the water heat exchanger constituting the refrigerant circuit, and the hot water storage tank with water circuitry connected to the water heat exchanger, and the heat source end heat exchanger configured for separation from the heat source unit in connection.
  • a heat pump water heating system 1 is configured mainly with a main unit 10, a heat source end heat exchanger unit 20, and a set of refrigerant lines 30 for interconnection between the main unit 10 and the heat source end heat exchanger unit 20.
  • the main unit 10 includes a heat source unit 11, water circuitry 12, and a hot water storage tank 13. In the first embodiment, they are accommodated together in a single casing.
  • the heat source unit 11 has incorporated therein, for a refrigeration cycle: a compressor 11a for compressing a refrigerant circulating in the cycle; a four-way valve 11b for controlling flow directions of refrigerant; a water heat exchanger 11c for heating water by using heat of refrigerant; and an expansion valve 11d.
  • the water circuitry 12 is a set of flow passages (circuits) of (hot) water circulating in the main unit 10.
  • Water is supplied from a water service, and once led from a pressure reducing valve 12a into the hot water storage tank 13, and after that, it is supplied through a pump 12b to the water heat exchanger 11c.
  • a pump 12b to the water heat exchanger 11c.
  • heat exchanger 11c Here is performed heat exchange between water and heated refrigerant, whereby water is changed to hot water, which is stored in the hot water storage tank 13. And, this hot water is supplied, through a mixing valve 12c, to a bathroom or kitchen, for instance.
  • the heat source end heat exchanger unit 20 includes a heat source end heat exchanger 20a, and an air fan 20b.
  • the heat source end heat exchanger 20a as equipment separated from the main unit 10, is connected via refrigerant lines 30 to the four-way valve 11b and the expansion valve 11d.
  • Refrigerant is changed to liquid at the water heat exchanger 11c, which is let through the expansion valve 11d to the heat source end heat exchanger 20a, where it is changed to a gaseous state.
  • This refrigerant circulates, as shown by arrows in Fig. 1 , through the compressor 11a, four-way valve 11b, water heat exchanger 11c, expansion valve 11d, heat source end heat exchanger 20a, four-way valve 11b, and compressor 11a, in this order, constituting a refrigeration cycle.
  • Fig. 2 is a schematic diagram illustrating an exemplary installation in an apartment of a complex housing of the heat pump water heating system according to the first embodiment of the present invention.
  • the complex housing 60 includes a balcony 61, a living room 62, a bathroom 63, and a common pathway 64, for instance.
  • the main unit 10 is installed in a space between the bathroom 63 and the common pathway 64, main. From the main unit 10, hot water can be supplied through a water circuit 12 to the bathroom 63, for instance. Further, above the common pathway 64, there is installed the heat source end heat exchanger unit 20.
  • the heat source end heat exchanger unit 20 is connected to the main unit 10 through the refrigerant lines 30.
  • the heat source end heat exchanger 20a is separated from the heat source unit 11 in the main unit 10, as separate equipment relative to the main unit 10, to be installed outside the main unit 10.
  • its casing can also be compact and light-weighted, without needing a space to be secured for installation of an entirety of heat source unit 11 as ever.
  • it also is enabled to employ such an installation method as suspending the heat source end heat exchanger unit 20 from a ceiling, embedding in a ceiling, or mounting on a wall.
  • the heat source end heat exchanger 20a can have a secured performance as ever, thus permitting the heat source unit 11 provided in the main unit 10 to have a maintained efficiency, as well.
  • the interconnection between the heat source end heat exchanger 20a and the main unit 10 is not made by any water circuits 12, but by the refrigerant lines 30, thus eliminating the needs for, among others, provision of measures for freeze prevention and prevention of radiation loss at the water circuits 12.
  • a main unit 10 is distinctive over configuration disclosed in the first embodiment in that a hot water storage tank 13 is separated for installation from a heat source unit 11.
  • the heat source unit 11 and the hot water storage tank 13 are connected to each other via water circuits 12.
  • a heat pump water heating system 1 can be installed with an enhanced installation freedom, in particular in respect of the height dimension, allowing for carry-in and construction upon installation of the heat source unit 11, and the maintainability to be improved, as well.
  • the third embodiment is distinctive over the foregoing embodiments in that the heat source end heat exchanger unit 20 is substituted with a solar heat collector 40 connected to a main unit 10.
  • the heat source end heat exchanger 20a is configured to change refrigerant incoming thereto as having passed the expansion valve 11d, from liquid to a gaseous state.
  • the air fan 20b is then driven for revolutions to have ambient air strike on the refrigerant lines 30, thereby rendering refrigerant low-temperature low-pressure.
  • various electric components are required, needing electric power also for driving the electric components.
  • the heat source end heat exchanger unit 20 is substituted with the solar heat collector 40, whereby a heat collector panel is heated by solar energy, permitting refrigerant flowing in the heat collector panel to be heated to cause evaporation.
  • the air fan 20b which has been provided in the heat source end heat exchanger unit 20 for sending air for heat exchange to the heat exchanger, is turned unnecessary, thus eliminating the need for electric components to drive the fan, as well. Further, along with the reduction in number of components, it is allowed to eliminate also the need for electric power to drive such electric components.
  • the expansion valve 11d has been provided inside the heat source unit 11 in the main unit 10.
  • such an expansion valve 11d is separated from a heat source unit 11, and provided at the same unit end as a heat source end heat exchanger unit 20.
  • Provision of the expansion valve 11d in such a position permits a shortened distance between the expansion valve 11d and a heat source end heat exchanger 20a, thus allowing for an enhanced response of the heat source end heat exchanger 20a depending on open-close actions of the expansion valve 11d.
  • the freedom of installation can be secured even with implementation of the expansion valve 11d in the same unit as the heat source end heat exchanger unit 20, permitting provision of a heat pump water heating system allowing for installation free of performance deterioration of components, without causing disfigurement.
  • the present invention is applicable to a variety of heat pump water heating systems.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Heat-Pump Type And Storage Water Heaters (AREA)
  • Steam Or Hot-Water Central Heating Systems (AREA)
EP07744588A 2006-06-02 2007-06-01 Wärmepumpen-heisswasserversorgungssystem Withdrawn EP2034248A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2006154608 2006-06-02
PCT/JP2007/061200 WO2007142144A1 (ja) 2006-06-02 2007-06-01 ヒートポンプ給湯システム

Publications (1)

Publication Number Publication Date
EP2034248A1 true EP2034248A1 (de) 2009-03-11

Family

ID=38801400

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07744588A Withdrawn EP2034248A1 (de) 2006-06-02 2007-06-01 Wärmepumpen-heisswasserversorgungssystem

Country Status (3)

Country Link
EP (1) EP2034248A1 (de)
JP (1) JPWO2007142144A1 (de)
WO (1) WO2007142144A1 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4130600B1 (de) 2020-03-23 2025-04-30 Carrier Japan Corporation Vorrichtung zur erzeugung von heissem wasser

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS613955A (ja) * 1984-06-15 1986-01-09 Matsushita Electric Ind Co Ltd 太陽熱湯沸器
JP3702724B2 (ja) * 1999-09-08 2005-10-05 三菱電機株式会社 ヒートポンプシステムおよびヒートポンプシステムの据付方法
JP3825755B2 (ja) * 2003-02-12 2006-09-27 三洋電機株式会社 ヒートポンプ式給湯装置
JP3986484B2 (ja) * 2003-09-29 2007-10-03 三洋電機株式会社 ヒートポンプ装置

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2007142144A1 *

Also Published As

Publication number Publication date
JPWO2007142144A1 (ja) 2009-10-22
WO2007142144A1 (ja) 2007-12-13

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