AU2015395825B2 - Heat pump hot-water supply system - Google Patents

Heat pump hot-water supply system Download PDF

Info

Publication number
AU2015395825B2
AU2015395825B2 AU2015395825A AU2015395825A AU2015395825B2 AU 2015395825 B2 AU2015395825 B2 AU 2015395825B2 AU 2015395825 A AU2015395825 A AU 2015395825A AU 2015395825 A AU2015395825 A AU 2015395825A AU 2015395825 B2 AU2015395825 B2 AU 2015395825B2
Authority
AU
Australia
Prior art keywords
hot
water supply
solenoid valve
heat
bypass
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.)
Active
Application number
AU2015395825A
Other versions
AU2015395825A1 (en
Inventor
Tomoyoshi Obayashi
Tetsuji Saikusa
Yusuke Tsuji
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric 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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Publication of AU2015395825A1 publication Critical patent/AU2015395825A1/en
Application granted granted Critical
Publication of AU2015395825B2 publication Critical patent/AU2015395825B2/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B5/00—Compression machines, plants or systems, with several evaporator circuits, e.g. for varying refrigerating capacity
    • F25B5/04—Compression machines, plants or systems, with several evaporator circuits, e.g. for varying refrigerating capacity arranged in series
    • 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
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
    • 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
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B1/00—Compression machines, plants or systems with non-reversible cycle
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B49/00—Arrangement or mounting of control or safety devices
    • F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B5/00—Compression machines, plants or systems, with several evaporator circuits, e.g. for varying refrigerating capacity
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B6/00—Compression machines, plants or systems, with several condenser circuits
    • F25B6/04—Compression machines, plants or systems, with several condenser circuits arranged in series
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B9/00—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point
    • F25B9/002—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point characterised by the refrigerant
    • F25B9/008—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point characterised by the refrigerant the refrigerant being carbon dioxide
    • 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
    • F24D2200/00—Heat sources or energy sources
    • F24D2200/12—Heat pump
    • F24D2200/123—Compression type 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
    • F24D2220/00—Components of central heating installations excluding heat sources
    • F24D2220/02—Fluid distribution means
    • F24D2220/0271—Valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2309/00—Gas cycle refrigeration machines
    • F25B2309/06—Compression machines, plants or systems characterised by the refrigerant being carbon dioxide
    • F25B2309/061—Compression machines, plants or systems characterised by the refrigerant being carbon dioxide with cycle highest pressure above the supercritical pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2339/00—Details of evaporators; Details of condensers
    • F25B2339/04—Details of condensers
    • F25B2339/047—Water-cooled condensers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
    • F25B2400/04—Refrigeration circuit bypassing means
    • F25B2400/0403—Refrigeration circuit bypassing means for the condenser
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
    • F25B2400/04—Refrigeration circuit bypassing means
    • F25B2400/0409—Refrigeration circuit bypassing means for the evaporator
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
    • F25B2400/24—Storage receiver heat
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2600/00—Control issues
    • F25B2600/25—Control of valves
    • F25B2600/2501—Bypass valves

Landscapes

  • 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)
  • Chemical Kinetics & Catalysis (AREA)
  • Heat-Pump Type And Storage Water Heaters (AREA)

Abstract

The present invention is provided with: a heat pump water heater (100) including a main circuit (80) in which a compressor (1) which compresses a refrigerant, a gas cooler (2), a first electromagnetic valve (80V1), a thermal storage heat exchanger (3), an expansion valve (4), and an air heat exchanger (5) are connected sequentially; a hot water supply tank (20) which contains a heating medium that exchanges heat with a refrigerant flowing through the gas cooler (2); and a thermal storage tank (30) which contains a heating medium that exchanges heat with a refrigerant flowing through the thermal storage heat exchanger (3). The heat pump water heater (100) includes: a first bypass circuit (81) which is disposed so as to branch off from the main circuit (80) at a first branch part (81a) located on an outlet side of the gas cooler (2) and on an inlet side of the first electromagnetic valve (80V1) and so as to join the main circuit (80) at a first joining part (81b) located on an outlet side of the thermal storage heat exchanger (3) and on an inlet side of the expansion valve (4); and a control means (50) which switches between opening and closing of the first electromagnetic valve (80V1).

Description

DESCRIPTION
Title of Invention
HEAT PUMP HOT-WATER SUPPLY SYSTEM
Technical Field [0001]
The present invention relates to a heat pump hot-water supply system, and more particularly, to a heat pump hot-water supply system using heat of condensation of refrigerant and other heat energy.
Background Art [0002]
In recent years, in response to the trend toward regulating the use of chlorofluorocarbon refrigerants, a heat pump apparatus using a natural refrigerant is under fierce development. Among others, a heat pump apparatus using carbon dioxide (CO2) as a refrigerant has become increasingly popular year after year.
CO2 has the characteristics of having an ozone depletion potential of 0 and a global warming potential of 1, and hence can reduce a load on the environment.
Moreover, CO2 has excellent safety of being nontoxic and incombustible, is easily available, and is relatively inexpensive. Further, as opposed to a fluorocarbon20 based refrigerant, CO2 has a characteristic that CO2 on the high-pressure side, which is discharged from a compressor, transitions to a supercritical state exceeding a critical point. In other words, when transferring heat to another fluid (e.g., water, air, or the refrigerant) by exchanging heat, CO2 in this supercritical state remains in the supercritical state without being condensed. CO2 having such characteristics suffers a small loss by transitioning between the states, and is suitable for, among others, a heat pump apparatus with high temperature is required. Therefore, there has been proposed a heat pump water heater, which uses CO2 as a refrigerant, and is configured to heat water to a high temperature of 90 degrees centigrade or more utilizing the advantages of CO2.
1001946834
2015395825 03 Oct 2017 [0003]
Moreover, there has been proposed a hot-water supply system using a heat pump water heater, which is configured to heat water by heat of condensation of refrigerant (see Patent Literature 1, for example). The hot-water supply system disclosed in Patent Literature 1 includes the heat pump water heater, and a burning appliance as an auxiliary hot-water supply unit using gas or oil as a fuel.
Citation List
Patent Literature [0004]
Patent Literature 1: Japanese Patent No. 4139827 [0004a]
Reference to any prior art in the specification is not, and should not be taken as, an acknowledgment or any form of suggestion that this prior art forms part of the common general knowledge in any jurisdiction or that this prior art could reasonably be expected to be understood, regarded as relevant and/or combined with other pieces of prior art by a person skilled in the art.
Summary [0004b]
As used herein, except where the context requires otherwise, the term comprise and variations of the term, such as comprising, comprises and comprised, are not intended to exclude further additives, components, integers or steps.
[0005]
However, in the invention disclosed in Patent Literature 1, when a hot-water supply load is temporarily increased, and the burning appliance is operated, the heat pump water heater has a small instantaneous capacity, and hence has extremely small operation factor. Therefore, there has been a problem of leading to a reduction in efficiency in terms of primary converted energy, and to an increase
1001946834
2015395825 03 Oct 2017 in discharge amount of CO2. Moreover, when the heat is to be stored in a hot-water storage tank in the night and other times when the load is small without operating the burning appliance, there have been problems in that a capacity of the hot-water storage tank is increased, and hence in that an installation space is increased, with the result that an initial investment is increased.
[0006]
The present invention has been made in view of the above-mentioned problems, and therefore has an object to provide a heat pump hot-water supply system that is more inexpensive and smaller in installation space than in the related art. An alternative object is to provide the public with a useful choice.
[0007]
According to a first aspect of the present invention, there is provided a heat pump hot-water supply system, comprising: a heat pump water heater including a main circuit, in which a compressor configured to compress a refrigerant, a gas cooler, a first solenoid valve, a regenerative heat exchanger, an expansion valve, and an air heat exchanger are connected in the stated order; a hot-water supply tank including a heat medium for exchanging heat with the refrigerant flowing through the gas cooler; and a heat storage tank including a heat medium for exchanging heat with the refrigerant flowing through the regenerative heat exchanger, the heat pump water heater including a first bypass formed to branch off the main circuit at a first branching portion located on an outlet side of the gas cooler and an inlet side of the first solenoid valve, and to merge with the main circuit at a first merging portion located on an outlet side of the regenerative heat exchanger and an inlet side of the expansion valve, a first bypass solenoid valve provided on the first bypass and a control unit configured to switch the first solenoid valve to be opened or closed.
1001946834
2015395825 03 Oct 2017 [0008]
According to an embodiment disclosed within the following, the heat pump hot-water supply system includes the first bypass, which is formed to branch off the main circuit at the first branching portion located on the outlet side ofthe gas cooler and the inlet side of the first solenoid valve, and to merge with the main circuit at the first merging portion located on the outlet side ofthe regenerative heat exchanger and the inlet side ofthe expansion valve, and the control unit configured to switch the first solenoid valve to be opened or closed. Therefore, hot water stored in the hot-water supply tank can be heated without using a burning appliance configured to heat the hot water stored in the hot-water supply tank, and hence without increasing the capacity of the hot-water storage tank. Therefore, there can be obtained the heat pump hot-water supply system that is more inexpensive and smaller in installation space than in the related art.
3a
1001941443
Brief Description of Drawings [0009] [Fig. 1] Fig. 1 is a configuration diagram of a heat pump hot-water supply system 200 according to Embodiment 1 of the present invention.
[Fig. 2] Fig. 2 is a schematic diagram of the heat pump hot-water supply system 200 according to Embodiment 1 of the present invention.
[Fig. 3] Fig. 3 is a diagram for illustrating a specific configuration of a heat storage tank 30 of the heat pump hot-water supply system 200 according to Embodiment 1 of the present invention.
[Fig. 4] Fig. 4 is a schematic diagram of a heat pump hot-water supply system 200 according to Embodiment 2 of the present invention.
Description of Embodiments [0010]
Now, a heat pump water heater 100 according to the present invention is described in detail with reference to the drawings. Note that, the relationships between the sizes of components in the following drawings may be different from the actual relationships. Further, in the following drawings, components denoted by the same reference symbols correspond to the same or equivalent components. This is common throughout the description herein. In addition, the forms of the components described herein are merely examples, and the components are not limited to the description herein.
[0011]
Embodiment 1
Fig. 1 is a configuration diagram of a heat pump hot-water supply system
200 according to Embodiment 1 of the present invention. Fig. 2 is a schematic diagram of the heat pump hot-water supply system 200 according to Embodiment 1 of the present invention.
[0012]
As illustrated in Fig. 1, the heat pump hot-water supply system 200 includes
1001941443 a heat pump water heater 100, a hot-water supply tank 20, a hot-water supply circuit 21, a water supply unit 22, a heat storage tank 30, a heat storage circuit 31, and a water supply unit 32.
[0013]
As illustrated in Fig. 2, the heat pump water heater 100 uses, as a refrigerant, a fluid exceeding a critical point on a high-pressure side of a refrigeration cycle, for example, CO2. The heat pump water heater 100 includes a compressor 1, a gas cooler 2, a regenerative heat exchanger 3, an expansion valve 4, an air heat exchanger 5, a fan 6, a control unit 50, and a main circuit 80. The main circuit 80 is a circuit formed by connecting the compressor 1, the gas cooler 2, the regenerative heat exchanger 3, the expansion valve 4, and the air heat exchanger 5 in the stated order.
[0014]
The compressor 1 is a compressor having a variable capacity, which is configured to compress the sucked refrigerant to be discharged as hightemperature, high-pressure refrigerant. The gas cooler 2 is configured to exchange heat between the refrigerant that has been discharged from the compressor 1 and is flowing through the main circuit 80, and a heat medium that is flowing through the hot-water supply circuit 21, and is provided on a discharge side of the compressor 1. The regenerative heat exchanger 3 is configured to exchange heat between the refrigerant flowing through the main circuit 80, and a heat medium flowing through the heat storage circuit 31. The heat medium that has exited the hot-water supply tank 20 and is flowing through the hot-water supply circuit 21 is hot water, for example. Moreover, the heat medium that has exited the heat storage tank 30 and is flowing through the heat storage circuit 31 is hot water, for example.
[0015]
The expansion valve 4 is configured to decompress and expand the refrigerant flowing on the main circuit 80, and is provided on an outlet side of the
1001941443 regenerative heat exchanger 3 on the main circuit 80. The air heat exchanger 5 is configured to evaporate and gasify the refrigerant that has exited the expansion valve 4, and is provided on an outlet side of the expansion valve 4. The fan 6 is an air-sending unit configured to generate an air flow for introducing air into the air heat exchanger 5.
[0016]
The hot-water supply tank 20 is configured to temporarily store hot water to be supplied. The hot-water supply circuit 21 is a circuit formed to pass through the hot-water supply tank 20 and the gas cooler 2. The water supply unit 22 is configured to send hot water, which is discharged from inside the hot-water supply tank 20, toward the gas cooler 2 side, and to return the hot water back to the hotwater supply tank 20.
[0017]
The heat storage tank 30 is configured to store hot water at a temperature that is lower than a hot-water supply temperature (for example, temperature range of from 20 to 40 degrees centigrade). The heat storage circuit 31 is a circuit formed to pass through the heat storage tank 30 and the regenerative heat exchanger 3. The water supply unit 32 is configured to send hot water, which is discharged from inside the heat storage tank 30, toward the regenerative heat exchanger 3 side, and to return the hot water back to the heat storage tank 30. [0018]
The control unit 50 is configured to control a first solenoid valve 80V1, a second solenoid valve 80V2, a first bypass solenoid valve 81V, and a second bypass solenoid valve 82V, for example, to be opened or closed. The control unit
50 includes, for example, hardware such as a circuit device configured to realize the above-mentioned function, or software to be executed on an arithmetic unit such as a microcontroller or a CPU.
[0019]
The first solenoid valve 80V1 is a solenoid valve provided on an outlet side of
1001941443 the gas cooler 2 and an inlet side of the regenerative heat exchanger 3. The second solenoid valve 80V2 is a solenoid valve provided on the outlet side of the expansion valve 4 and an inlet side of the air heat exchanger 5.
[0020]
A first bypass 81 is formed to branch off the main circuit 80 at a first branching portion 81a located on the outlet side of the gas cooler 2 and an inlet side of the first solenoid valve 80V1, and to merge with the main circuit 80 at a first merging portion 81 b located on the outlet side of the regenerative heat exchanger 3 and an inlet side of the expansion valve 4. The first bypass solenoid valve 81V is provided on the first bypass 81.
[0021]
A second bypass 82 is formed to branch off the main circuit 80 at a second branching portion 82a located on the discharge side of the compressor 1 and an inlet side of the gas cooler 2, and to merge with the main circuit 80 at a second merging portion 82b located on the outlet side of the gas cooler 2 and the gas cooler 2 side of the first branching portion 81 a. The second bypass solenoid valve 82V is provided on the second bypass 82.
[0022]
A third bypass 83 is formed to branch off the main circuit 80 at a third branching portion 83a located on the outlet side of the expansion valve 4 and an inlet side of the second solenoid valve 80V2, and to merge with the main circuit 80 at a third merging portion 83b located on an outlet side of the second solenoid valve 80V2 and the inlet side of the air heat exchanger 5.
[0023]
Now, operation modes of the heat pump water heater 100 are described.
Examples of the operation modes include, for example, (1) hot-water supply mode, (2) heat storage mode, (3) heat recovery and hot-water supply mode, and (4) simultaneous temperature retaining and heat storage mode.
[0024]
1001941443 (1) Hot-Water Supply Mode
The hot-water supply mode is a mode in which, in a case where there is a small or almost no hot-water supply load, low-temperature water in a lower portion of the hot-water supply tank 20 is increased in temperature, is further increased in temperature inside the heat pump water heater 100 to be high-temperature hot water, and is then returned to an upper portion of the hot-water supply tank 20. In the hot-water supply mode, the control unit 50 closes the first solenoid valve 80V1, opens the second solenoid valve 80V2, opens the first bypass solenoid valve 81V, and closes the second bypass solenoid valve 82V.
[0025]
When the hot-water supply mode is executed, the high-temperature, highpressure refrigerant that has been discharged from the compressor 1 enters the gas cooler 2. The refrigerant that has entered the gas cooler 2 heats and increases a temperature of water to be supplied as hot water, which circulates through the hot-water supply circuit 21. The refrigerant then transitions to a lowtemperature refrigerant state, and flows through the first bypass 81 to enter the expansion valve 4. The refrigerant that has entered the expansion valve 4 is decompressed and expanded to transition to a low-temperature, low-pressure twophase refrigerant state, and exits from the expansion valve 4 to enter the air heat exchanger 5. The refrigerant, which has entered the air heat exchanger 5, exchanges heat with ambient air to transition to a gaseous state, and enters the compressor 1.
[0026]
Meanwhile, when the water supply unit 22 is operated, the low-temperature water in the lower portion of the hot-water supply tank 20 passes through the hotwater supply circuit 21 to enter the gas cooler 2. The hot water that has entered the gas cooler 2 exchanges heat with the refrigerant flowing through the gas cooler 2 to be increased in temperature, and hence transition to high-temperature hot water, and passes through the hot-water supply circuit 21 to enter the upper portion
1001941443 of the hot-water supply tank 20.
[0027] (2) Heat Storage Mode
The heat storage mode is a mode in which, when an amount of hot water in the hot-water supply tank 20 is occupied by a certain threshold value or more of hot water (for example, 100%), hot water inside the heat storage tank 30 is increased in temperature. In the heat storage mode, the control unit 50 opens the first solenoid valve 80V1, opens the second solenoid valve 80V2, closes the first bypass solenoid valve 81V, and opens the second bypass solenoid valve 82V.
[0028]
When the heat storage mode is executed, the high-temperature, highpressure refrigerant that has been discharged from the compressor 1 flows through the second bypass 82 to enter the regenerative heat exchanger 3. The refrigerant that has entered the regenerative heat exchanger 3 heats and increases a temperature of hot water circulating through the heat storage circuit 31 to transition to the low-temperature refrigerant state, and enters the expansion valve 4. The refrigerant that has entered the expansion valve 4 is decompressed and expanded to transition to the low-temperature, low-pressure two-phase refrigerant state, and enters the air heat exchanger 5. The refrigerant that has entered the air heat exchanger 5 exchanges heat with the ambient air to transition to the gaseous state, and enters the compressor 1.
[0029]
Meanwhile, when the water supply unit 32 is operated, hot water stored inside the heat storage tank 30 passes through the heat storage circuit 31 to enter the regenerative heat exchanger 3. The hot water that has entered the regenerative heat exchanger 3 exchanges heat with the refrigerant flowing through the regenerative heat exchanger 3 to be heated and increased in temperature, and passes through the heat storage circuit 31 to enter the heat storage tank 30.
[0030]
1001941443 (3) Heat Recovery and Hot-Water Supply Mode
The heat recovery and hot-water supply mode is a mode in which, when the hot-water supply load is temporarily increased, and the amount of hot water in the hot-water supply tank 20 falls below the certain threshold value or less, hot water inside the regenerative heat exchanger 3 and the heat storage tank 30 is circulated using hot water in the heat storage tank 30 as a heat source, and a temperature of hot water inside the hot-water supply tank 20 is increased by the regenerative heat exchanger 3. In the heat recovery and hot-water supply mode, the control unit 50 closes the first solenoid valve 80V1, closes the second solenoid valve 80V2, opens the first bypass solenoid valve 81V, and closes the second bypass solenoid valve 82V.
[0031]
When the heat recovery and hot-water supply mode is executed, the hightemperature, high-pressure refrigerant that has been discharged from the compressor 1 enters the gas cooler 2. The refrigerant that has entered the gas cooler 2 heats and increases a temperature of hot water circulating through the hotwater supply circuit 21 to transition to the low-temperature refrigerant state, and passes through the first bypass 81 to enter the expansion valve 4. The refrigerant that has entered the expansion valve 4 is decompressed to transition to the low20 temperature, low-pressure two-phase refrigerant state, and passes through the third bypass 83 to enter the regenerative heat exchanger 3. The refrigerant that has entered the regenerative heat exchanger 3 cools hot water circulating through the heat storage circuit 31 to be evaporated, and hence transition to the gaseous state, and enters the air heat exchanger 5. The refrigerant that has entered the air heat exchanger 5 exchanges heat with the ambient air to transition to the gaseous state, and enters the compressor 1.
[0032]
Meanwhile, when the water supply unit 22 is operated, the low-temperature water in the lower portion of the hot-water supply tank 20 passes through the hot10
1001941443 water supply circuit 21 to enter the gas cooler 2. The hot water that has entered the gas cooler 2 exchanges heat with the refrigerant flowing through the gas cooler 2 to be increased in temperature, and hence transition to high-temperature hot water, and passes through the hot-water supply circuit 21 to enter the upper portion of the hot-water supply tank 20. Moreover, when the water supply unit 32 is operated, hot water stored in the heat storage tank 30 passes through the heat storage circuit 31 to enter the regenerative heat exchanger 3. The hot water that has entered the regenerative heat exchanger 3 exchanges heat with the refrigerant flowing through the regenerative heat exchanger 3 to be cooled, and passes through the heat storage circuit 31 to enter the heat storage tank 30.
[0033] (4) Simultaneous Temperature Retaining and Heat Storage Mode
The simultaneous temperature retaining and heat storage mode is a mode in which, when the hot-water supply load is small but the temperature needs to be increased again due to a reduction in temperature caused by heat loss and other factors, that is, when a temperature of water that enters from the hot-water supply tank 20 is higher than a certain threshold value (for example, 55 degrees centigrade), the temperature of hot water inside the hot-water supply tank 20 is increased again, and the temperature of hot water inside the heat storage tank 30 is increased. In the simultaneous temperature retaining and heat storage mode, the control unit 50 opens the first solenoid valve 80V1, opens the second solenoid valve 80V2, closes the first bypass solenoid valve 81V, and closes the second bypass solenoid valve 82V.
[0034]
When the simultaneous temperature retaining and heat storage mode is executed, the high-temperature, high-pressure refrigerant that has been discharged from the compressor 1 enters the gas cooler 2. The refrigerant that has entered the gas cooler 2 heats and increases the temperature of hot water circulating through the hot-water supply circuit 21 to transition to an intermediate-temperature
1001941443 refrigerant state, and enters the regenerative heat exchanger 3. The refrigerant that has entered the regenerative heat exchanger 3 heats and increases the temperature of hot water circulating through the heat storage tank 30 to transition to the low-temperature refrigerant state, and is discharged from the regenerative heat exchanger 3. The refrigerant that has been discharged from the regenerative heat exchanger 3 enters the expansion valve 4 to be decompressed, and hence transition to the low-temperature, low-pressure two-phase refrigerant state, and enters the air heat exchanger 5. The refrigerant that has entered the air heat exchanger 5 exchanges heat with the ambient air in the air heat exchanger 5 to transition to the gaseous state, and enters the compressor 1.
[0035]
Meanwhile, when the water supply unit 22 is operated, the low-temperature water in the lower portion of the hot-water supply tank 20 passes through the hotwater supply circuit 21 to enter the gas cooler 2. The hot water that has entered the gas cooler 2 exchanges heat with the refrigerant flowing through the gas cooler 2 to be increased in temperature, and hence transition to high-temperature hot water, and passes through the hot-water supply circuit 21 to enter the upper portion of the hot-water supply tank 20. Moreover, when the water supply unit 32 is operated, hot water stored inside the heat storage tank 30 passes through the heat storage circuit 31 to enter the regenerative heat exchanger 3. The hot water that has entered the regenerative heat exchanger 3 exchanges heat with the refrigerant flowing through the regenerative heat exchanger 3 to be heated and increased in temperature, and passes through the heat storage circuit 31 to enter the heat storage tank 30.
[0036]
Fig. 3 is a diagram for illustrating a specific configuration of the heat storage tank 30 of the heat pump hot-water supply system 200 according to Embodiment 1 of the present invention. As illustrated in Fig. 3, capsules 29 that are changed from a liquid phase to a solid phase at 20 to 40 degrees centigrade are stored in
1001941443 the heat storage tank 30. The capsules 29 are members encapsulating sodium acetate or other latent heat storage materials, for example. When such configuration is adopted, the heat storage tank 30 is configured such that hot water flows around the capsules 29. The capsules 29 may alternatively be formed of capsules of several hundred microns or less encapsulating a paraffin resin-based material or other latent heat storage materials, for example. In this case, the capsules 29 and the hot water in a mixture state are stored in the heat storage tank 30, and when in the heat recovery and hot-water supply mode and in the heat storage mode, the heat pump hot-water supply system 200 is configured such that the capsules 29 and the hot water in the mixture state circulate between the regenerative heat exchanger 3 and the heat storage tank 30.
[0037]
As described above, the heat pump water heater 100 according to Embodiment 1 includes the heat pump water heater 100 including the main circuit
80, which is formed by connecting the compressor 1 configured to compress the refrigerant, the gas cooler 2, the first solenoid valve 80V1, the regenerative heat exchanger 3, the expansion valve 4, and the air heat exchanger 5 in the stated order, the hot-water supply tank 20 including the heat medium for exchanging heat with the refrigerant flowing through the gas cooler 2, and the heat storage tank 30 including the heat medium for exchanging heat with the refrigerant flowing through the regenerative heat exchanger 3. The heat pump water heater 100 includes the first bypass 81, which is formed to branch off the main circuit 80 at the first branching portion 81a located on the outlet side of the gas cooler 2 and the inlet side of the first solenoid valve 80V1, and to merge with the main circuit 80 at the first merging portion 81 b located on the outlet side of the regenerative heat exchanger 3 and the inlet side of the expansion valve 4, and the control unit 50 configured to switch the first solenoid valve 80V1 to be opened or closed.
Therefore, as opposed to the related art, hot water stored in the hot-water supply tank 20 can be heated without using a burning appliance configured to heat
1001941443 the hot water stored in the hot-water supply tank 20, and hence without increasing the capacity of the hot-water supply tank 20. Therefore, there can be obtained the heat pump hot-water supply system 200 that is more inexpensive and smaller in installation space than in the related art.
[0038]
Moreover, the control unit 50 can execute the heat recovery and hot-water supply mode by closing the first solenoid valve 80V1, closing the second solenoid valve 80V2, opening the first bypass solenoid valve 81V, and closing the second bypass solenoid valve 82V. Through execution of the heat recovery and hot-water supply mode, the hot-water supply capacity can be increased especially in winter when the hot-water supply load is large. For example, in a hot-water supply mode in the related art, heat has been transferred from the low temperature of the ambient air to the water to be supplied as the hot water. However, with the addition of the heat recovery and hot-water supply mode, heat is transferred from intermediate-temperature water in the heat storage tank 30 to the water to be supplied as the hot water such that the heat is transferred more easily, and with an increase in evaporating temperature, a density of the refrigerant sucked by the compressor 1 is increased. As a result, the hot-water supply capacity is increased without changing the capacity of the compressor 1.
[0039]
Moreover, the control unit 50 can execute the simultaneous temperature retaining and heat storage mode by opening the first solenoid valve 80V1, opening the second solenoid valve 80V2, closing the first bypass solenoid valve 81V, and closing the second bypass solenoid valve 82V. Through execution of the simultaneous temperature retaining and heat storage mode, in the case where a CO2 refrigerant is used, 55 degrees centigrade corresponding to an incurrent temperature at the outlet of the gas cooler in the related art are reduced to the temperature of the hot water inside the heat storage tank 30 with the provision of the regenerative heat exchanger 3, with the result that the amount of heat is
1001941443 increased, that an amount of heat/refrigerant conveying power is increased, and that efficient operation can be performed.
[0040]
In the above description, there has been described the example in which the control unit 50 opens or closes the first solenoid valve 80V1, the second solenoid valve 80V2, the first bypass solenoid valve 81V, and the second bypass solenoid valve 82V, but opening degrees of those solenoid valves can be determined appropriately in steps.
[0041]
Embodiment 2
Fig. 4 is a schematic diagram of a heat pump hot-water supply system 200 according to Embodiment 2 of the present invention. In Embodiment 2, items not described otherwise in particular are similar to those in Embodiment 1, and the same functions and components are denoted by the same reference symbols. [0042]
As illustrated in Fig. 4, the heat pump hot-water supply system 200 includes a hot-water supply circuit 121, a water supply unit 122, a hot-water-to-be-supplied cycle circuit 131, a circulator pump 132, a connection circuit 141, a bypass connection circuit 151, a burning appliance 152, and a circulator pump 153.
[0043]
The hot-water supply circuit 121 is a circuit formed to connect the gas cooler 2 and the regenerative heat exchanger 3. The water supply unit 122 is a circuit configured to guide hot water exiting from the heat storage tank 30 to the hot-water supply tank 20, and is provided on the hot-water supply circuit 121. The hotwater-to-be-supplied cycle circuit 131 is a circuit configured to circulate hot water that exits a load 190. The circulator pump 132 is a pump, which is configured to be operated when a temperature of water in the heat storage tank 30 is reduced to a predetermined value or less, and is provided on the hot-water-to-be-supplied cycle circuit 131.
1001941443 [0044]
The connection circuit 141 is a circuit configured to connect the hot-water supply tank 20 and the heat storage tank 30. The bypass connection circuit 151 is a circuit configured to connect the hot-water supply tank 20 and the heat storage tank 30, and is a circuit configured to guide hot water exiting from the heat storage tank 30 to the hot-water supply tank 20 to bypass the connection circuit 141.
[0045]
The burning appliance 152 is configured to heat the hot water discharged from the heat storage tank 30, and to supply the heated hot water to the hot-water supply tank 20, and is provided on the bypass connection circuit 151. The burning appliance 152 serves as a backup unit for a case where heating is insufficient even when hot water is supplied by exchanging heat in the gas cooler 2. The circulator pump 153 is configured to supply the heat supplied from the burning appliance 152 to a subject to be heated, and is provided on the bypass connection circuit 151. [0046]
As described above, the heat pump hot-water supply system 200 according to Embodiment 2 further includes the connection circuit 141 configured to guide hot water exiting from the heat storage tank 30 to the hot-water supply tank 20, the bypass connection circuit 151 configured to guide hot water exiting from the heat storage tank 30 to the hot-water supply tank 20 to bypass the connection circuit 141, and the burning appliance 152, which is provided on the bypass connection circuit 151, and is configured to heat hot water that has exited the heat storage tank 30 and is flowing through the bypass connection circuit 151. Therefore, when the hot-water supply load is temporarily increased, the hot water inside the heat storage tank 30 passes through the bypass connection circuit 151 to be heated by the burning appliance 152, and then flows through the hot-water supply tank 20. Therefore, even when an excessive load is temporarily generated, hot water can be supplied to the hot-water supply tank 20.
Reference Signs List
1001941443 [0047] compressor 2 gas cooler 3 regenerative heat exchanger expansion valve 5 air heat exchanger 6 fan 20 hotwater supply tank 21 hot-water supply circuit 22 water supply unit 29 capsule 30 heat storage tank 31 heat storage circuit 32 water supply unit 50 control unit 80 main circuit 80V1 first solenoid valve 80V2 second solenoid valve 81 first bypass 81V first bypass solenoid valve
81a first branching portion 81b first merging portion 82 second bypass 82V second bypass solenoid valve 82a second branching portion
82b second merging portion 83 third bypass 83a third branching portion 83b third merging portion 100 heat pump water heater 121 hot-water supply circuit 122 water supply unit 131 hot-water-to-be-supplied cycle circuit 132 circulator pump 141 connection circuit 151 bypass connection circuit 152 burning appliance 153 circulator pump 190 load
200 heat pump hot-water supply system
1001946834
2015395825 03 Oct 2017

Claims (6)

  1. CLAIMS [Claim 1]
    A heat pump hot-water supply system, comprising: a heat pump water heater including a main circuit, in which a compressor
    5 configured to compress refrigerant, a gas cooler, a first solenoid valve, a regenerative heat exchanger, an expansion valve, and an air heat exchanger are connected in the stated order;
    a hot-water supply tank including a heat medium for exchanging heat with the refrigerant flowing through the gas cooler; and
    10 a heat storage tank including a heat medium for exchanging heat with the refrigerant flowing through the regenerative heat exchanger, the heat pump water heater including a first bypass formed to branch off the main circuit at a first branching portion located on an outlet side of the gas cooler and an inlet side of the
    15 first solenoid valve, and to merge with the main circuit at a first merging portion located on an outlet side of the regenerative heat exchanger and an inlet side of the expansion valve, a first bypass solenoid valve provided on the first bypass and a control unit configured to switch the first solenoid valve to be
    20 opened or closed.
  2. [Claim 2]
    The heat pump hot-water supply system of claim 1, further comprising; a second bypass formed to branch off the main circuit at a second branching portion located on a discharge side of the compressor and an inlet side of the gas
    25 cooler, and to merge with the main circuit at a second merging portion located on the outlet side of the gas cooler and the gas cooler side of the first branching portion.
  3. [Claim 3]
    The heat pump hot-water supply system of claim 1 or 2, further comprising
    1001946834
    2015395825 03 Oct 2017 a second bypass solenoid valve, provided on the second bypass.
  4. [Claim 4]
    The heat pump hot-water supply system of any one of claim 1 to 3, further comprising:
    5 a second solenoid valve provided on an outlet side of the expansion valve and an inlet side of the air heat exchanger; and a third bypass formed to branch off the main circuit on the outlet side of the expansion valve and an inlet side of the second solenoid valve, and to merge with the main circuit on an outlet side of the second solenoid valve and the inlet side of
    10 the air heat exchanger.
  5. [Claim 5]
    The heat pump hot-water supply system of claim 4 as dependent on claim 3, wherein the control unit operates a hot-water supply mode, and is configured to, in the hot-water supply mode, close the first solenoid valve, open the second solenoid
    15 valve, open the first bypass solenoid valve, and close the second bypass solenoid valve.
  6. [Claim 6]
    The heat pump hot-water supply system of claim 4 as dependent on claim 3, wherein the control unit operates a heat storage mode, and is configured to, in the
    20 heat storage mode, open the first solenoid valve, open the second solenoid valve, close the first bypass solenoid valve, and open the second bypass solenoid valve. [Claim 7]
    The heat pump hot-water supply system of claim 4 as dependent on claim 3, wherein the control unit operates a heat recovery and hot-water supply mode, and
    25 is configured to, in the heat recovery and hot-water supply mode, close the first solenoid valve, close the second solenoid valve, open the first bypass solenoid valve, and close the second bypass solenoid valve.
    [Claim 8]
    The heat pump hot-water supply system of claim 4 as dependent on claim 3,
    1001946834
    2015395825 03 Oct 2017 wherein the control unit operates a simultaneous temperature retaining and heat storage mode, and is configured to, in the simultaneous temperature retaining and heat storage mode, open the first solenoid valve, open the second solenoid valve, close the first bypass solenoid valve, and close the second bypass solenoid valve.
    5 [Claim 9]
    The heat pump hot-water supply system of any one of claims 1 to 8, wherein the heat medium in the heat storage tank comprises a heat storage medium that is changed in phase in a temperature range of from 20 to 40 degrees centigrade. [Claim 10]
    10 The heat pump hot-water supply system of any one of claims 1 to 9, further comprising:
    a connection circuit configured to guide hot water exiting from the heat storage tank to the hot-water supply tank;
    a bypass connection circuit configured to guide hot water exiting from the 15 heat storage tank to the hot-water supply tank to bypass the connection circuit; and a burning appliance provided on the bypass connection circuit, and is configured to heat hot water that exited the heat storage tank and is flowing through the bypass connection circuit.
    [Claim 11]
    20 The heat pump hot-water supply system of any one of claims 1 to 10, wherein the refrigerant comprises carbon dioxide.
AU2015395825A 2015-05-26 2015-05-26 Heat pump hot-water supply system Active AU2015395825B2 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2015/065127 WO2016189663A1 (en) 2015-05-26 2015-05-26 Heat pump hot water supply system

Publications (2)

Publication Number Publication Date
AU2015395825A1 AU2015395825A1 (en) 2017-10-26
AU2015395825B2 true AU2015395825B2 (en) 2018-11-08

Family

ID=57393023

Family Applications (1)

Application Number Title Priority Date Filing Date
AU2015395825A Active AU2015395825B2 (en) 2015-05-26 2015-05-26 Heat pump hot-water supply system

Country Status (6)

Country Link
EP (1) EP3306219B1 (en)
JP (1) JP6437113B2 (en)
KR (1) KR102010687B1 (en)
CN (1) CN107614985B (en)
AU (1) AU2015395825B2 (en)
WO (1) WO2016189663A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20220187027A1 (en) * 2019-04-23 2022-06-16 Ckd Corporation Heat exchange system

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003042538A (en) * 2001-07-27 2003-02-13 Sanyo Electric Co Ltd Hot water storage tank and heat pump
JP2003065603A (en) * 2001-08-24 2003-03-05 Sanyo Electric Co Ltd Hot water storage tank and heat pump device
JP2005042943A (en) * 2003-07-23 2005-02-17 Hitachi Ltd Heat storage type air conditioner
JP2006349202A (en) * 2005-06-13 2006-12-28 Takuma Co Ltd Hybrid hot water supply system
JP2008292122A (en) * 2007-05-28 2008-12-04 Kansai Electric Power Co Inc:The Heat storage system and heat storage type air conditioner using same
JP2012167869A (en) * 2011-02-15 2012-09-06 Panasonic Corp Air conditioner
WO2013046720A1 (en) * 2011-09-30 2013-04-04 ダイキン工業株式会社 Hot-water-supplying, air-conditioning system
WO2015129456A1 (en) * 2014-02-27 2015-09-03 株式会社前川製作所 Co2 water heater

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT409667B (en) * 1994-12-06 2002-10-25 Heinz Groesswang Device for transferring heat of condensation
CN1240267A (en) * 1998-04-23 2000-01-05 五洋建设株式会社 Compression chiller
JP3654017B2 (en) * 1998-12-10 2005-06-02 大成建設株式会社 Multi-function heat pump system
JP3915638B2 (en) * 2002-09-06 2007-05-16 ダイキン工業株式会社 Hot water system
JP2006052934A (en) * 2004-07-12 2006-02-23 Sanyo Electric Co Ltd Heat exchange apparatus and refrigerating machine
CN200940918Y (en) * 2006-08-11 2007-08-29 上海海事大学 Heat recovery apparatus having air cooling heat pump system
CN101498518B (en) * 2008-01-31 2010-12-08 广东志高空调有限公司 Water heating system of multifunctional ice accumulation air conditioner and its control method
JP2010144938A (en) * 2008-12-16 2010-07-01 Mitsubishi Electric Corp Heat pump water heater and method for operating the same
CN101949586B (en) * 2010-09-21 2013-01-09 苏宇贵 Heating system and heating method for secondarily moved heat pump
JP5747838B2 (en) * 2012-02-22 2015-07-15 三菱電機株式会社 Heating hot water system

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003042538A (en) * 2001-07-27 2003-02-13 Sanyo Electric Co Ltd Hot water storage tank and heat pump
JP2003065603A (en) * 2001-08-24 2003-03-05 Sanyo Electric Co Ltd Hot water storage tank and heat pump device
JP2005042943A (en) * 2003-07-23 2005-02-17 Hitachi Ltd Heat storage type air conditioner
JP2006349202A (en) * 2005-06-13 2006-12-28 Takuma Co Ltd Hybrid hot water supply system
JP2008292122A (en) * 2007-05-28 2008-12-04 Kansai Electric Power Co Inc:The Heat storage system and heat storage type air conditioner using same
JP2012167869A (en) * 2011-02-15 2012-09-06 Panasonic Corp Air conditioner
WO2013046720A1 (en) * 2011-09-30 2013-04-04 ダイキン工業株式会社 Hot-water-supplying, air-conditioning system
WO2015129456A1 (en) * 2014-02-27 2015-09-03 株式会社前川製作所 Co2 water heater

Also Published As

Publication number Publication date
JP6437113B2 (en) 2018-12-12
CN107614985B (en) 2020-04-14
EP3306219A4 (en) 2019-02-13
KR20170137175A (en) 2017-12-12
EP3306219A1 (en) 2018-04-11
WO2016189663A1 (en) 2016-12-01
CN107614985A (en) 2018-01-19
AU2015395825A1 (en) 2017-10-26
EP3306219B1 (en) 2019-11-13
JPWO2016189663A1 (en) 2018-01-11
KR102010687B1 (en) 2019-08-13

Similar Documents

Publication Publication Date Title
KR100472999B1 (en) Gas heat pump type air conditioning device, engine-coolant-water heating device, and operating method for gas heat pump type air conditioning device
EP2489965A1 (en) Air-conditioning hot-water supply system
JP5842310B2 (en) Refrigeration apparatus and defrost method for load cooler
EP2584285B1 (en) Refrigerating air-conditioning device
JP2002310519A (en) Heat pump water heater
JP2017155944A (en) Refrigeration cycle device and hot water heating device including the same
AU2015395825B2 (en) Heat pump hot-water supply system
JP2008134045A (en) Heat pump system
Konrad et al. Cold climate air source heat pumps: Industry progress and thermodynamic analysis of market-available residential units
CN101586482B (en) Low-temperature type engine and heat regenerating method thereof
CN105556221A (en) Refrigerating device
CN109163469B (en) Air conditioning system and control method thereof
JP5447968B2 (en) Heat pump equipment
JP2005300057A (en) Heat pump hot water supply system
JPH0791776A (en) Cooler
JP2010112698A (en) Refrigeration device
CN206831891U (en) A kind of flexible control pressure system of mixed working fluid cryogenic refrigeration cooling
RU2287119C2 (en) Method and device for defreezing in vapor compression system
JPS63233266A (en) Heat pump type air conditioner
CN114963600B (en) CO switched in multiple modes 2 Heat pipe cooling system and control method
CN107990399B (en) Heat accumulating type heating system capable of achieving time-sharing and sectional temperature rising
KR100751039B1 (en) System for generating hot/cool water and heating/cooling condition using heat pump
JP2018162944A (en) Hot water supply system
CN106225279A (en) Air conditioning system and its implementation
JPS58102067A (en) Air conditioner

Legal Events

Date Code Title Description
DA3 Amendments made section 104

Free format text: THE NATURE OF THE AMENDMENT IS: AMEND THE INVENTION TITLE TO READ HEAT PUMP HOT-WATER SUPPLY SYSTEM

FGA Letters patent sealed or granted (standard patent)