CN114046575A - Air conditioner hot water integrated system and control method thereof - Google Patents

Air conditioner hot water integrated system and control method thereof Download PDF

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Publication number
CN114046575A
CN114046575A CN202111294496.4A CN202111294496A CN114046575A CN 114046575 A CN114046575 A CN 114046575A CN 202111294496 A CN202111294496 A CN 202111294496A CN 114046575 A CN114046575 A CN 114046575A
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China
Prior art keywords
water
heat
heat storage
storage unit
phase
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CN202111294496.4A
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Chinese (zh)
Inventor
方金升
梁祥飞
周孙希
徐箐
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Gree Electric Appliances Inc of Zhuhai
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Gree Electric Appliances Inc of Zhuhai
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Priority to CN202111294496.4A priority Critical patent/CN114046575A/en
Publication of CN114046575A publication Critical patent/CN114046575A/en
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    • 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
    • F24F5/0046—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 using natural energy, e.g. solar energy, energy from the ground
    • 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
    • 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
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/30—Arrangement or mounting of 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
    • 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
    • F24F5/0007—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 cooling apparatus specially adapted for use in air-conditioning
    • F24F5/001—Compression cycle type
    • 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
    • F24F5/0007—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 cooling apparatus specially adapted for use in air-conditioning
    • F24F5/0017—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 cooling apparatus specially adapted for use in air-conditioning using cold storage bodies, e.g. ice
    • F24F5/0021—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 cooling apparatus specially adapted for use in air-conditioning using cold storage bodies, e.g. ice using phase change material [PCM] for storage
    • 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
    • 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
    • F25B41/00—Fluid-circulation arrangements
    • F25B41/20—Disposition of valves, e.g. of on-off valves or flow control 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
    • F25B41/00—Fluid-circulation arrangements
    • F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
    • F25B41/24—Arrangement of shut-off valves for disconnecting a part of the refrigerant cycle, e.g. an outdoor part
    • 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
    • F25B41/00—Fluid-circulation arrangements
    • F25B41/30—Expansion means; Dispositions thereof
    • 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
    • F25B41/00—Fluid-circulation arrangements
    • F25B41/40—Fluid line arrangements
    • 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
    • F24F5/0046—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 using natural energy, e.g. solar energy, energy from the ground
    • F24F2005/0064—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 using natural energy, e.g. solar energy, energy from the ground using solar energy
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2221/00—Details or features not otherwise provided for
    • F24F2221/18—Details or features not otherwise provided for combined with domestic apparatus
    • F24F2221/183—Details or features not otherwise provided for combined with domestic apparatus combined with a hot-water boiler
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/14—Thermal energy storage

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

Abstract

The invention discloses an air-conditioning hot water integrated system and a control method thereof, wherein the air-conditioning hot water integrated system comprises a water circulation loop, a refrigerant circulation loop and a phase change heat storage unit; the solar heat collector and the water tank are arranged on the water circulation loop, the solar heat collector is connected with the water tank, the compressor and the indoor heat exchanger are arranged on the refrigerant circulation loop, the compressor is connected with the indoor heat exchanger, two ends of one path of the phase change heat storage unit are respectively connected with the indoor heat exchanger and the compressor, the first end of the other path of the phase change heat storage unit is connected with a pipeline between an outlet of the solar heat collector and the water tank, and the second end of the phase change heat storage unit is connected with a pipeline between an inlet of the solar heat collector and the water tank. The phase-change heat storage technology, the solar energy technology and the air source heat pump technology are combined, when solar energy is sufficient, the phase-change heat storage technology is utilized to store the heat of the solar energy and the condensation heat of the compressor in the phase-change heat storage unit, when the solar energy is insufficient, the heat is extracted from the phase-change heat storage unit and used for heating and/or heating water, and the transfer of the heat in time and space is realized.

Description

Air conditioner hot water integrated system and control method thereof
Technical Field
The invention relates to the technical field of air-conditioning and hot water integrated devices, in particular to an air-conditioning and hot water integrated system and a control method thereof.
Background
With the improvement of the living standard of people, the energy consumption of buildings is continuously increased, wherein the energy consumption of building heat supply and living hot water is particularly and quickly increased, so that new requirements on energy structure and energy utilization are provided for meeting the increasingly tense energy consumption.
Solar energy is a renewable clean energy source, has the advantages of infinite reserves, existing universality, clean utilization, good economy and the like, but the instability caused by the influence of weather and climate also restricts the further development; the air source heat pump is an efficient, energy-saving and environment-friendly energy utilization mode, but the problems that the low-temperature heating capacity is attenuated, indoor thermal comfort is affected by frosting and defrosting in winter, waste heat of an outdoor heat exchanger is wasted in refrigeration in summer and the like still exist.
Disclosure of Invention
In view of the above, the present invention provides an air-conditioning and water-heating integrated system and a control method thereof, which realize the temporal and spatial transfer and utilization of heat by absorbing solar energy and air energy through a phase change heat storage unit and an air source heat pump.
In order to solve the above-mentioned problems, according to an aspect of the present application, an embodiment of the present invention provides an air-conditioning and hot-water integrated system, including:
the solar water heater comprises a water circulation loop, a solar heat collector and a water tank are arranged on the water circulation loop, and the solar heat collector is connected with the water tank;
the refrigerant circulating loop is provided with a compressor and an indoor heat exchanger, and the compressor is connected with the indoor heat exchanger;
the phase-change heat storage unit comprises two flow paths, wherein two ends of one flow path are respectively connected with the indoor heat exchanger and the compressor, the first end of the other flow path of the phase-change heat storage unit is connected with a pipeline between an outlet of the solar heat collector and the water tank, and the second end of the other flow path of the phase-change heat storage unit is connected with a pipeline between an inlet of the solar heat collector and the water tank;
when the indoor heat exchanger is used as an evaporator, refrigerant discharged from the compressor enters the phase change heat storage unit and the water tank for heat exchange, and then enters the indoor heat exchanger for heat absorption; when the indoor heat exchanger is used as a condenser, the refrigerant discharged from the compressor enters the indoor heat exchanger and the water tank to release heat, and then enters the phase change heat storage unit to exchange heat.
In some embodiments, the phase-change heat storage unit includes a first heat exchanger and a phase-change heat storage layer that wraps around the first heat exchanger.
In some embodiments, the phase-change heat storage layer is a phase-change heat storage material.
In some embodiments, the phase-change temperature range of the phase-change heat storage layer is: 30-55 ℃.
In some embodiments, the water circulation loop further comprises a water circulation pump, one end of the water circulation pump is connected with the solar heat collector, and the other end of the water circulation pump is respectively connected with the phase change heat storage unit and the water tank.
In some embodiments, the water circulation loop further comprises a water circulation branch, the water circulation branch is connected with the water tank in parallel, a second stop valve is arranged on the water circulation branch, and the other branch of the phase change heat storage unit is connected with the water circulation branch in series.
In some embodiments, the water circulation circuit further comprises a first shut-off valve connected in series with the tank and in parallel with the water circulation branch.
In some embodiments, the refrigerant circulation circuit further includes a four-way valve, and the indoor heat exchanger is connected to the compressor through the four-way valve.
In some embodiments, the refrigerant circulation circuit further includes a first restrictor, a second restrictor, and a third restrictor, one end of the first restrictor is connected to the indoor heat exchanger, the other end of the first restrictor is connected to the second restrictor and the third restrictor, respectively, the second restrictor is connected to the phase-change heat storage unit, and the third restrictor is connected to the water tank.
In some embodiments, the refrigerant circulation circuit further comprises a second heat exchanger and a fourth restriction, and the second heat exchanger and the fourth restriction are connected in series and then connected in parallel with the phase change heat storage unit.
According to another aspect of the present application, an embodiment of the present invention provides a control method of an air-conditioning and hot-water integrated system, which is used for controlling the air-conditioning and hot-water integrated system, and includes:
determining the current season, and controlling the working mode of the air-conditioning and hot-water integrated system according to the season, specifically comprising the following steps:
in summer, the refrigerant discharged from the compressor enters the phase change heat storage unit and the water tank to release heat;
then the heat is absorbed in the indoor heat exchanger;
then the refrigerant enters a compressor to finish the refrigeration of a refrigerant circulation loop;
in winter, the refrigerant discharged from the compressor enters the indoor heat exchanger and the water tank to release heat;
then the heat enters the phase change heat storage unit to absorb the heat stored in the phase change heat storage unit;
and then enters a compressor to finish heating of the refrigerant circulation circuit.
In some embodiments, the control method of the air-conditioning and water-heating integrated system further includes heating water in a water circulation loop, specifically:
in winter, the circulating water pump drives water in the water tank to enter the solar thermal collector, and the water enters the water tank and the phase change thermal storage unit to release heat after being heated in the solar thermal collector, so that hot water production of the water circulation loop is completed;
in summer, the circulating water pump drives water to enter the solar heat collector, and the water enters the water tank after being heated in the solar heat collector, so that the hot water making of the water circulation loop 1 is completed.
In some embodiments, the control method of the air-conditioning and water-heating integrated system further includes: during transition seasons, the water heating water of the water circulation loop is specifically as follows:
the circulating water pump drives cold water in the water tank to enter the solar heat collector for heating;
when the water temperature in the water tank does not reach the set temperature, the first stop valve is opened, the second stop valve is closed, and the heated water enters the water tank to heat or replace cold water in the water tank to finish the hot water making process;
when the water temperature in the water tank reaches the set temperature, the first stop valve is closed, the second stop valve is opened, and the heated water enters the phase change heat storage unit to release heat so as to finish the heat storage process.
In some embodiments, when the phase change heat storage unit finishes storing heat in summer or finishes releasing heat in winter:
when the refrigerant circulation loop is used for refrigeration and the temperature of the heat storage material is 5-10 ℃ higher than the phase change temperature, the phase change heat storage unit finishes heat storage and releases heat through the second heat exchanger;
when the refrigerant circulation loop is used for heating and the temperature of the heat storage material is 5-10 ℃ higher than the ambient temperature, the phase change heat storage unit finishes heat release and absorbs heat through the second heat exchanger.
Compared with the prior art, on one hand, the air-conditioning and water-heating integrated system provided by the invention has the following beneficial effects:
the phase-change heat storage technology, the solar energy technology and the air source heat pump technology are combined, when solar energy is sufficient, the phase-change heat storage technology is utilized to store the heat of the solar energy and the condensation heat of the compressor in the phase-change heat storage unit, when the solar energy is insufficient, the heat is extracted from the phase-change heat storage unit and used for heating and/or heating water, and the heat is transferred in time and space.
In addition, the heat of the solar energy and the condensation heat of the compressor are stored, so that the energy utilization efficiency is improved, and meanwhile, the thermal pollution is reduced; the heat is extracted from the phase-change heat storage unit to heat and/or heat water, and the extracted heat is combined with the current heat, so that the heating capacity in winter is improved, and the problem that the air source heat pump is frosted frequently in winter is avoided.
On the other hand, the control method of the air-conditioning hot water system provided by the invention is designed based on the air-conditioning hot water system, and the beneficial effects of the control method refer to the beneficial effects of the air-conditioning hot water system, which are not repeated herein.
The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical solutions of the present invention more clearly understood and to implement them in accordance with the contents of the description, the following detailed description is given with reference to the preferred embodiments of the present invention and the accompanying drawings.
Drawings
Fig. 1 is a schematic structural diagram of an air-conditioning and water-heating integrated system according to an embodiment of the present invention;
fig. 2 is another structural schematic diagram of an air-conditioning and water-heating integrated system according to an embodiment of the present invention;
fig. 3 is a flowchart of a control method of an air-conditioning and water-heating integrated system according to an embodiment of the present invention.
Wherein:
1. a water circulation loop; 2. a refrigerant circulation circuit; 3. a phase change heat storage unit; 11. a solar heat collector; 12. a water tank; 13. a water circulating pump; 14. a first shut-off valve; 15. a water circulation branch; 16. A second stop valve; 21. a compressor; 22. an indoor heat exchanger; 23. a four-way valve; 24. a first restrictor; 25. a second choke; 26. a third current regulator; 27. a second heat exchanger; 28. a fourth choke; 31. a first heat exchanger; 32. and a phase-change heat storage layer.
Detailed Description
To further explain the technical means and effects of the present invention adopted to achieve the predetermined object, the following detailed description of the embodiments, structures, features and effects according to the present invention will be made with reference to the accompanying drawings and preferred embodiments. In the following description, different "one embodiment" or "an embodiment" refers to not necessarily the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.
In the description of the present invention, it is to be understood that the terms "vertical", "lateral", "longitudinal", "front", "rear", "left", "right", "upper", "lower", "horizontal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description of the present invention, and do not mean that the device or member to which the present invention is directed must have a specific orientation or position, and thus, cannot be construed as limiting the present invention.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example 1
The present embodiment provides an air-conditioning and water-heating integrated system, as shown in fig. 1, the air-conditioning and water-heating integrated system includes: a water circulation loop 1, a refrigerant circulation loop 2 and a phase change heat storage unit; wherein, set up solar collector 11 and water tank 12 on the water circulation circuit 1, solar collector 11 and water tank 12 are connected, set up compressor 21 and indoor heat exchanger 22 on the refrigerant circulation circuit 2, compressor 21 and indoor heat exchanger 22 are connected, phase change heat storage unit 3 includes two flow paths, wherein the both ends of one way are connected with indoor heat exchanger 22 and compressor 21 respectively, the first end of another way of phase change heat storage unit 3 and the exit of solar collector 11 and the tube coupling between water tank 12, the second end and the tube coupling between the import of solar collector 11 and water tank 12.
Specifically, when the indoor heat exchanger 22 is used as an evaporator, the refrigerant discharged from the compressor 21 enters the phase-change heat storage unit 3 and the water tank 12 to exchange heat, and then enters the indoor heat exchanger 22 to absorb heat;
when the indoor heat exchanger 22 is used as a condenser, the refrigerant discharged from the compressor 21 enters the indoor heat exchanger 22 and the water tank 12 to release heat, and then enters the phase change heat storage unit 3 to exchange heat.
Thus, by adopting the structure, the solar heat collector 11, the indoor heat exchanger 22 in the air source heat pump and the phase change heat storage unit 3 are combined, when the solar heat collector 11 can collect sufficient heat, the phase change heat storage unit 3 is utilized to store the heat of the solar energy and the condensation heat of the compressor 21 in the phase change heat storage unit 3, when the solar heat collector 11 can not collect sufficient solar energy, the heat is extracted from the phase change heat storage unit 3 for heating and/or heating water, and the heat is transferred in time and space; the energy utilization efficiency is improved, and the thermal pollution is reduced; meanwhile, the heating capacity in winter is improved, and the problem that the indoor heat exchanger 22 is frequently frosted in winter is avoided.
In some embodiments:
the phase change heat storage unit 3 includes a first heat exchanger 31 and a phase change heat storage layer 32, and the phase change heat storage layer 32 wraps the first heat exchanger 31.
Specifically, the first heat exchanger 31 may be a heat exchanger having any structure, such as a finned tube heat exchanger, a spiral tube heat exchanger, or a serpentine tube heat exchanger, the inside of the tube of the first heat exchanger 31 is used for water or refrigerant, and the outside of the tube is sealed with the phase-change heat storage layer 32.
Specifically, the phase-change heat storage layer 32 is a phase-change heat storage material, preferably a composite phase-change heat storage material, and the phase-change temperature range of the phase-change heat storage layer 32 is: 30-55 ℃.
Phase change heat storage is a high and new energy storage technology based on a phase change heat storage material or a composite phase change heat storage material. The phase change heat storage has the advantages of constant temperature and high heat storage density, is widely researched, and is particularly suitable for the working conditions of discontinuous heat supply or uncoordinated supply and demand. The phase change heat storage technology is an effective means for solving the contradiction between energy supply time and space, is one of important ways for improving the energy utilization rate, and can be used for solving the contradiction between heat energy supply and demand mismatch.
Under the working conditions that refrigeration and hot water production are needed in summer, the first heat exchanger 31 and the water tank heat exchanger are used as condensers, and the indoor heat exchanger 22 is used as an evaporator; indoor heat exchanger 22 is for indoor cold volume of providing simultaneously, with the condensation heat storage of compressor 21 in phase change heat storage layer 32 and water tank 12, if the temperature does not reach the settlement temperature in the water tank, provides the heat for water tank 12 through hydrologic cycle circuit 1 when solar energy is sufficient, provides the heat for the water tank through hydrologic cycle circuit 15 when solar energy is not enough.
Under the working conditions of heating and hot water production in winter, when solar energy is sufficient, the solar energy provides heat for the water circulation loop 1 on one hand and provides heat for the phase change heat storage unit 3 on the other hand; when the solar energy is insufficient, the first heat exchanger 31 serves as an evaporator, the indoor heat exchanger 22 serves as a condenser, and the indoor heat exchanger 22 extracts heat stored in the phase-change heat storage layer 32 for the water circulation circuit 1 and the refrigerant circulation circuit 2; in this way, the utilization rate of solar energy is improved, and the problem of frosting of the indoor heat exchanger 22 is reduced.
In some embodiments:
the water circulation loop 1 further comprises a circulating water pump 13, one end of the circulating water pump 13 is connected with the solar thermal collector 11, and the other end of the circulating water pump 13 is respectively connected with the phase change thermal storage unit 3 and the water tank 12 and used for driving circulating water in the water circulation loop 1 to enter the solar thermal collector 11.
In some embodiments:
the water circulation loop 1 further comprises a water circulation branch 15, the water circulation branch 15 is connected with the water tank 12 in parallel, a second stop valve 16 is arranged on the water circulation branch 15, and the other branch of the phase change heat storage unit 3 is connected with the water circulation branch 15 in series.
The water circuit 1 further comprises a first shut-off valve 14, the first shut-off valve 14 being connected in series with the tank 12 and in parallel with the water circuit branch 15.
In a specific embodiment:
the first and second cutoff valves 14 and 16 are both opened or closed according to the actual thermal load; for example, when solar energy is sufficient, the first stop valve 14 and the second stop valve 16 are both opened, and the solar energy is not only used for providing heat, but also is stored in excess; when the solar energy is insufficient, the first stop valve 14 is opened, the second stop valve 16 is closed, the solar energy is only used for providing heat, and when the heat cannot meet the requirement, the phase-change heat storage unit 3 releases the heat to participate in heating.
In a specific embodiment:
the refrigerant circulation circuit 2 further includes a four-way valve 23, and the indoor heat exchanger 22 is connected to the compressor 21 via the four-way valve 23.
Specifically, as shown in fig. 1, four ports of the four-way valve 23 are: the E port, S port, C port and D port, the position of the slide valve of the four-way valve 23 are different, and the corresponding water circulation circuit 1 and refrigerant circulation circuit 2 are different.
In some embodiments, the refrigerant circulation circuit 2 further includes a first restrictor 24, a second restrictor 25, and a third restrictor 26, one end of the first restrictor 24 is connected to the indoor heat exchanger 22, the other end of the first restrictor 24 is connected to the second restrictor 25 and the third restrictor 26, respectively, the second restrictor 25 is connected to the phase-change heat storage unit 3, and the third restrictor 26 is connected to the tank 12.
The first, second and third restrictions 24, 25 and 26 have three functions in the air-conditioning and water-heating integrated system; firstly, changing high-temperature high-pressure liquid into low-temperature low-pressure liquid; is the boiling condition of the refrigerant in the evaporator; secondly, automatically adjusting the flow of the system refrigerant, and adjusting the evaporation temperature of the system refrigerant according to the change condition of the system load; and thirdly, the change range of the superheat degree of the outlet of the evaporator is controlled, and the heat exchange efficiency of the evaporator is fully exerted.
In some embodiments, as shown in fig. 2, the refrigerant circulation circuit 2 further comprises a second heat exchanger 27 and a fourth restriction 28, and the second heat exchanger 27 and the fourth restriction 28 are connected in series and then connected in parallel with the phase change heat storage unit 3.
In this way, during cooling or heating, heat can be released or absorbed by the second heat exchanger 27, and the influence on efficiency and user experience due to the completion of heat storage or heat release of the phase change heat storage unit 3 can be avoided.
The working process of the air-conditioning hot water integrated system provided by the embodiment is as follows:
in the summer working condition heating and cooling mode, the heat exchanger in the water tank 12 and the first heat exchanger 31 in the phase-change heat storage unit 3 are used as condensers, the indoor heat exchanger 22 is used as an evaporator, the indoor heat exchanger 22 provides cold indoors and stores condensation heat in the water tank 12 and the phase-change heat storage layer 32, solar energy participates in water circulation according to load requirements to provide heat for the water tank 12, waste of the condensation heat can be reduced, and the energy utilization efficiency is improved.
In this mode, the four-way valve 23 moves up the spool valve, the E port and the S port are conducted, the D port and the C port are conducted, the first, second and third restrictors 24, 25 and 26 are logically controlled in opening degrees, and the first and second cut-off valves 14 and 16 are opened or closed according to a thermal load.
The operation of the refrigerant circulation circuit 2 is as follows: the high-temperature and high-pressure refrigerant gas discharged from the compressor 21 is divided into two paths, one path enters the phase change heat storage unit 3 through the four-way valve 23, the other path enters the water tank 12, the condensation heat is stored in the phase change heat storage layer 32 and the water, and then is throttled and depressurized through the second throttle 25 and the third throttle 26 respectively, then is converged, enters the first heat exchanger 31 through the first throttle 24, absorbs the heat in the indoor air therein to be evaporated, and then enters the compressor 21 through the four-way valve 23, so that the circulation is completed.
The working process of the water circulation loop 1 is as follows: the cold water in the water tank 12 enters the solar heat collector 11 under the driving of the circulating water pump 13, is heated in the solar heat collector, and enters the water tank 12 through the second stop valve 16, so that the circulation is completed.
In the winter working condition, the water heating mode and the heating mode are adopted, when sunlight is sufficient, solar energy provides heat for the water tank on one hand, the heat load at the side of the water tank is reduced, and heat is provided for the phase change heat storage unit 3 on the other hand; when sunlight is insufficient, the indoor heat exchanger 22 and the heat exchangers in the water tank 12 are used as condensers, the first heat exchanger 31 in the phase-change heat storage unit 3 is used as an evaporator, the indoor heat exchanger 22 extracts heat stored in the phase-change heat storage unit 3 to be used by the indoor environment and the water tank 12, solar energy utilization efficiency can be improved, heating evaporation temperature of the indoor heat exchanger 22 is improved, heating capacity is further improved, and the problem caused by frosting and defrosting is reduced.
In this mode, the four-way valve spool moves down, the port E and the port D are connected, the port S and the port C are connected, the first restrictor 24, the second restrictor 25 and the third restrictor 26 control the opening degree according to logic, and the first cut-off valve 14 and the second cut-off valve 16 are opened or closed according to the thermal load.
The operation of the refrigerant circulation circuit 2 is as follows: the high-temperature and high-pressure refrigerant gas discharged from the compressor 21 is divided into two paths, one path enters the indoor heat exchanger 22 through the four-way valve 23, the other path enters the water tank 12, after the refrigerant discharges heat to the indoor environment and water, the refrigerant is throttled and depressurized through the first throttle 24 and the third throttle 26 respectively and then joins, enters the phase-change heat storage unit 3 through the second throttle 25, absorbs the heat stored in the phase-change heat storage material therein, and then enters the compressor 21 through the four-way valve 23, and the cycle is completed.
The working process of the water circulation loop 1 is as follows: the circulating water enters the solar heat collector 11 under the driving of the circulating water pump 13, is heated and then divided into two paths, respectively enters the water tank 12 and the phase change heat storage unit 3 to heat water and phase change heat storage materials therein, and enters the circulating water pump 13 again after being converged to complete circulation.
In the transition season hot water making mode, when sunlight is sufficient, the solar energy provides heat for the water tank 12 and the phase change heat storage unit 3; when sunlight is insufficient, the heat exchanger in the water tank 12 serves as a condenser, the first heat exchanger 31 in the phase change heat storage unit 3 serves as an evaporator, and the indoor heat exchanger 22 extracts heat stored in the phase change heat storage unit 3 for use by the water tank 12, so that the solar heat utilization efficiency can be improved.
In this mode, the four-way valve spool is moved down, the E port and the D port are conducted, the S port and the C port are conducted, the first choke 24 is closed, the opening degrees of the second choke 25 and the third choke 26 are controlled according to logic, and the first cut-off valve 14 and the second cut-off valve 16 are opened or closed according to a thermal load.
The operation of the refrigerant circulation circuit 2 is as follows: the high-temperature and high-pressure refrigerant gas discharged from the compressor 21 enters the water tank 12, and after the refrigerant releases heat to the water in the water tank 12, the refrigerant is throttled and depressurized by the third throttle 26 and the second throttle 25, and then enters the phase change heat storage unit 3, where the heat stored in the phase change heat storage material is absorbed, and then enters the compressor 21 through the four-way valve 23, thereby completing the cycle.
The working process of the water circulation loop 1 is divided into two cases: when the heat collection amount of the solar heat collector 11 reaches a preset condition, circulating water enters the solar heat collector 11 under the driving of the circulating water pump 13, the first stop valve 14 and the second stop valve 16 are both opened, the heated water enters the water tank 12 and the phase change heat storage unit 3 to heat water and phase change heat storage materials therein, and the heated water enters the circulating water pump 13 again after being converged to complete circulation, complete water heating and complete heat storage; when the heat collected by the solar collector 11 does not reach the preset condition, the first cut-off valve 14 is opened, the second cut-off valve 16 is closed, and the heated water enters the water tank 12 to release heat, thereby completing heating water.
Example 2
The present embodiment provides a control method of an air-conditioning and hot-water integrated system, as shown in fig. 3, for controlling the air-conditioning and hot-water integrated system of embodiment 1, including:
s11, determining the current season;
s12, controlling the working mode of the air-conditioning and hot water integrated system according to seasons, specifically:
in summer, S121, the refrigerant discharged from the compressor 21 enters the phase change heat storage unit 3 and the water tank 12 to release heat;
s122, then entering the indoor heat exchanger 22 to absorb heat;
s123, then the refrigerant enters the compressor 21 to complete the refrigeration of the refrigerant circulation circuit 2;
in winter, S1201, the refrigerant discharged from the compressor 21 enters the indoor heat exchanger 22 and the water tank 12 to release heat;
s1202, then the heat stored in the phase change heat storage unit 3 is absorbed in the phase change heat storage unit 3;
s1203, the process proceeds to the compressor 21, and the heating of the refrigerant circuit 2 is completed.
Thus, in the present embodiment, the solar thermal collector 11, the indoor heat exchanger 22 in the air source heat pump, and the phase change thermal storage unit 3 are combined together, when the solar thermal collector 11 can collect sufficient heat, the phase change thermal storage unit 3 is used to store the heat of the solar energy and the condensation heat of the compressor 21 in the phase change thermal storage unit 3, and when the solar thermal collector 11 cannot collect sufficient solar energy, the heat is extracted from the phase change thermal storage unit 3 for heating and/or heating water, so that the heat is transferred in time and space; the energy utilization efficiency is improved, and the thermal pollution is reduced; meanwhile, the heating capacity in winter is improved, and the problem that the indoor heat exchanger 22 is frequently frosted in winter is avoided.
In some embodiments:
in summer, the air-conditioning and water-heating integrated system is used for refrigerating and heating water;
the refrigeration is specifically as follows:
the condensation heat discharged from the compressor 21 enters the phase change heat storage unit 3 and the water tank 12 to release heat; then enters an indoor heat exchanger 22 through throttling and pressure reduction, absorbs the heat of the air in the indoor heat exchanger 22 to be evaporated, and then enters a compressor 21 through a four-way valve 23 to finish refrigeration;
the water heating method specifically comprises the following steps:
the circulating water pump 13 drives the cold water in the water tank 12 to enter the solar thermal collector 11, and the cold water is heated in the solar thermal collector 11 and then enters the water tank 12 and the phase change thermal storage unit 3 to release heat, so that the heating water of the water circulation loop 1 is completed.
Specifically, in this mode, the heat exchanger in the water tank 12 and the first heat exchanger 31 in the phase-change heat storage unit 3 are used as condensers, the indoor heat exchanger 22 is used as an evaporator, the indoor heat exchanger 22 provides cold energy indoors and stores the condensation heat in the water tank 12 and the phase-change heat storage layer 32, and solar energy participates in water circulation to provide heat for the water tank 12 according to load requirements; the four-way valve 23 moves up the spool valve, the E port and the S port are conducted, the D port and the C port are conducted, the first, second and third restrictors 24, 25 and 26 control the opening degrees according to logic, and the first and second cut-off valves 14 and 16 are opened or closed according to the thermal load.
The operation of the refrigerant circulation circuit 2 is as follows: the high-temperature and high-pressure refrigerant gas discharged from the compressor 21 is divided into two paths, one path enters the phase change heat storage unit 3 through the four-way valve 23, the other path enters the water tank 12, the condensation heat is stored in the phase change heat storage layer 32 and the water, and then is throttled and depressurized through the second throttle 25 and the third throttle 26 respectively, then is converged, enters the first heat exchanger 31 through the first throttle 24, absorbs the heat in the indoor air therein to be evaporated, and then enters the compressor 21 through the four-way valve 23, so that the circulation is completed.
The working process of the water circulation loop 1 is as follows: the cold water in the water tank 12 enters the solar heat collector 11 under the driving of the circulating water pump 13, is heated in the solar heat collector, and enters the water tank 12 through the second stop valve 16, so that the circulation is completed.
In a specific embodiment:
in winter, the air-conditioning and water-heating integrated system is used for heating and water heating;
the heating is specifically as follows:
the condensation heat discharged from the compressor 21 enters the indoor heat exchanger 22 and the water tank 12 to release heat, then enters the phase change heat storage unit 3 through throttling and pressure reduction, absorbs the heat stored in the phase change heat storage unit 3, and then enters the compressor 21 through the four-way valve 23 to finish heating;
the water heating method specifically comprises the following steps:
the circulating water pump 13 drives cold water to enter the solar heat collector 11, and the cold water enters the water tank 12 after being heated in the solar heat collector 11, so that the heating of water is completed.
Specifically, when sunlight is sufficient, solar energy provides heat for the water tank on the one hand, reduces heat load on the side of the water tank, and provides heat for the phase change heat storage unit 3 on the other hand; when sunlight is insufficient, the indoor heat exchanger 22 and the heat exchangers in the water tank 12 are used as condensers, the first heat exchanger 31 in the phase-change heat storage unit 3 is used as an evaporator, the indoor heat exchanger 22 extracts heat stored in the phase-change heat storage unit 3 to be used by the indoor environment and the water tank 12, solar energy utilization efficiency can be improved, heating evaporation temperature of the indoor heat exchanger 22 is improved, heating capacity is further improved, and the problem caused by frosting and defrosting is reduced.
In this mode, the four-way valve spool moves down, the port E and the port D are connected, the port S and the port C are connected, the first restrictor 24, the second restrictor 25 and the third restrictor 26 control the opening degree according to logic, and the first cut-off valve 14 and the second cut-off valve 16 are opened or closed according to the thermal load.
The operation of the refrigerant circulation circuit 2 is as follows: the high-temperature and high-pressure refrigerant gas discharged from the compressor 21 is divided into two paths, one path enters the indoor heat exchanger 22 through the four-way valve 23, the other path enters the water tank 12, after the refrigerant discharges heat to the indoor environment and water, the refrigerant is throttled and depressurized through the first throttle 24 and the third throttle 26 respectively and then joins, enters the phase-change heat storage unit 3 through the second throttle 25, absorbs the heat stored in the phase-change heat storage material therein, and then enters the compressor 21 through the four-way valve 23, and the cycle is completed.
The working process of the water circulation loop 1 is as follows: circulating water enters the solar thermal collector 11 under the driving of the circulating water pump 13, is heated and then is divided into two paths, respectively enters the water tank 12 and the phase change thermal storage unit 3 to heat water and phase change thermal storage materials therein, and enters the circulating water pump 13 again after being converged to complete circulation.
In a specific embodiment:
during transition seasons, the air-conditioning hot water integrated system is used for heating water, and the heating water is specifically as follows:
the circulating water pump 13 drives water to enter the solar heat collector 11 for heating;
when the water temperature in the water tank 12 does not reach the set temperature, the first stop valve 14 is opened, the second stop valve 16 is closed, and the heated water enters the water tank 12 to heat or replace cold water in the water tank, so that the hot water making process is completed;
when the water temperature in the water tank 12 reaches the set temperature, the first stop valve 14 is closed, the second stop valve 16 is opened, and the heated water enters the phase change heat storage unit 3 to release heat, thereby completing the heat storage process.
Specifically, when sunlight is sufficient, the solar energy provides heat for the water tank 12 and the phase change heat storage unit 3; when sunlight is insufficient, the heat exchanger in the water tank 12 serves as a condenser, the first heat exchanger 31 in the phase change heat storage unit 3 serves as an evaporator, and the indoor heat exchanger 22 extracts heat stored in the phase change heat storage unit 3 for use by the water tank 12, so that the solar heat utilization efficiency can be improved.
In this mode, the four-way valve spool is moved down, the E port and the D port are conducted, the S port and the C port are conducted, the first choke 24 is closed, the opening degrees of the second choke 25 and the third choke 26 are controlled according to logic, and the first cut-off valve 14 and the second cut-off valve 16 are opened or closed according to a thermal load.
The operation of the refrigerant circulation circuit 2 is as follows: the high-temperature and high-pressure refrigerant gas discharged from the compressor 21 enters the water tank 12, and after the refrigerant releases heat to the water in the water tank 12, the refrigerant is throttled and depressurized by the third throttle 26 and the second throttle 25, and then enters the phase change heat storage unit 3, where the heat stored in the phase change heat storage material is absorbed, and then enters the compressor 21 through the four-way valve 23, thereby completing the cycle.
The working process of the water circulation loop 1 is as follows: circulating water enters the solar thermal collector 11 under the driving of the circulating water pump 13, is heated and then is divided into two paths, respectively enters the water tank 12 and the phase change thermal storage unit 3 to heat water and phase change thermal storage materials therein, and enters the circulating water pump 13 again after being converged to complete circulation.
Additionally, in a particular embodiment, the method further comprises:
in the refrigeration mode, the temperature of the heat storage material is 5-10 ℃ higher than the phase change temperature, which indicates that the phase change heat storage unit has finished storing heat, and the heat is released outwards through the second heat exchanger 27; in the heating mode, the temperature of the heat storage material is 5-10 ℃ higher than the ambient temperature, which indicates that the phase change heat storage unit has finished releasing heat, and absorbs heat through the second heat exchanger 27; in this way, it is prevented that the heat cannot be continuously absorbed or released after the heat is released after the phase change heat storage unit 3 stores heat, and therefore user experience is not affected.
In summary, it is easily understood by those skilled in the art that the advantageous technical features described above can be freely combined and superimposed without conflict.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and any simple modification, equivalent change and modification made to the above embodiment according to the technical spirit of the present invention are still within the scope of the technical solution of the present invention.

Claims (14)

1. An air conditioner and hot water integrated system is characterized in that the air conditioner and hot water integrated system comprises:
the solar water heater comprises a water circulation loop (1), wherein a solar heat collector (11) and a water tank (12) are arranged on the water circulation loop (1), and the solar heat collector (11) is connected with the water tank (12);
the air conditioner comprises a refrigerant circulating loop (2), wherein a compressor (21) and an indoor heat exchanger (22) are arranged on the refrigerant circulating loop (2), and the compressor (21) is connected with the indoor heat exchanger (22);
the phase-change heat storage unit (3) comprises two flow paths, wherein two ends of one flow path are respectively connected with the indoor heat exchanger (22) and the compressor (21), the first end of the other flow path of the phase-change heat storage unit (3) is connected with a pipeline between an outlet of the solar heat collector (11) and the water tank (12), and the second end of the other flow path of the phase-change heat storage unit is connected with a pipeline between an inlet of the solar heat collector (11) and the water tank (12);
when the indoor heat exchanger (22) is used as an evaporator, refrigerant discharged from the compressor (21) enters the phase change heat storage unit (3) and the water tank (12) for heat exchange, and then enters the indoor heat exchanger (22) for heat absorption; when the indoor heat exchanger (22) is used as a condenser, refrigerant discharged from the compressor (21) enters the indoor heat exchanger (22) and the water tank (12) to release heat, and then enters the phase change heat storage unit (3) to exchange heat.
2. An air-conditioning hot water integrated system according to claim 1, characterized in that the phase-change heat storage unit (3) includes a first heat exchanger (31) and a phase-change heat storage layer (32), the phase-change heat storage layer (32) wrapping the first heat exchanger (31).
3. An air-conditioning hot water integrated system according to claim 2, wherein the phase-change heat storage layer (32) is a phase-change heat storage material.
4. An air-conditioning and water-heating integrated system according to claim 2 or 3, wherein the phase-change temperature range of the phase-change heat storage layer (32) is: 30-55 ℃.
5. An air-conditioning and water-heating integrated system according to claim 4, characterized in that the water circulation loop (1) further comprises a circulating water pump (13), one end of the circulating water pump (13) is connected with the solar heat collector (11), and the other end is respectively connected with the phase-change heat storage unit (3) and the water tank (12).
6. An air-conditioning and water-heating integrated system as claimed in claim 1, wherein the water circulation loop (1) further comprises a water circulation branch (15), the water circulation branch (15) is connected with the water tank (12) in parallel, a second stop valve (16) is arranged on the water circulation branch (15), and the other branch of the phase-change heat storage unit (3) is connected with the water circulation branch (15) in series.
7. Air conditioning and water heating integrated system according to claim 6, characterized in that the water circulation loop (1) further comprises a first shut-off valve (14), and the first shut-off valve (14) is connected in series with the water tank (12) and then connected in parallel with the water circulation branch (15).
8. Air-conditioning and hot-water integrated system according to claim 1 or 7, characterized in that the refrigerant circulation circuit (2) further comprises a four-way valve (23), and the indoor heat exchanger (22) is connected to the compressor (21) through the four-way valve (23).
9. An air-conditioning and water-heating integrated system according to claim 8, wherein the refrigerant circulation circuit (2) further comprises a first restrictor (24), a second restrictor (25) and a third restrictor (26), one end of the first restrictor (24) is connected to the indoor heat exchanger (22), the other end of the first restrictor (24) is connected to the second restrictor (25) and the third restrictor (26), respectively, the second restrictor (25) is connected to the phase-change heat storage unit (3), and the third restrictor (26) is connected to the water tank (12).
10. An air-conditioning and water-heating integrated system according to claim 9, wherein the refrigerant circulation circuit (2) further comprises a second heat exchanger (27) and a fourth throttle (28), and the second heat exchanger (27) and the fourth throttle (28) are connected in series and then connected in parallel with the phase-change heat storage unit (3).
11. A control method of an air conditioner hot water integrated system, which is used for controlling the air conditioner hot water integrated system according to any one of claims 1 to 10, comprising:
determining the current season, and controlling the working mode of the air-conditioning and hot-water integrated system according to the season, specifically comprising the following steps:
in summer, the refrigerant discharged from the compressor (21) enters the phase change heat storage unit (3) and the water tank (12) to release heat;
then enters the indoor heat exchanger (22) to absorb heat;
then enters the compressor (21) to finish the refrigeration of the refrigerant circulating loop (2);
in winter, refrigerant discharged from the compressor (21) enters an indoor heat exchanger (22) and a water tank (12) to release heat;
then the heat enters the phase change heat storage unit (3) to absorb the heat stored in the phase change heat storage unit (3);
and then the refrigerant enters the compressor (21) to complete heating of the refrigerant circulation circuit (2).
12. The control method of an air-conditioning and water-heating integrated system according to claim 11, further comprising heating water of the water circulation loop (1), specifically:
in winter, the circulating water pump (13) drives water to enter the solar thermal collector (11), and the water enters the water tank (12) and the phase change thermal storage unit (3) to release heat after being heated in the solar thermal collector (11), so that the water heating of the water circulation loop (1) is completed;
in summer, the circulating water pump (13) drives water to enter the solar heat collector (11), and the water enters the water tank (12) and the phase change heat storage unit after being heated in the solar heat collector (11) to finish the heating of the water circulation loop (1).
13. A control method of an air-conditioning and hot-water integrated system according to claim 11 or 12, further comprising:
during transition seasons, the water heating water of the water circulation loop (1) is specifically as follows:
the circulating water pump (13) drives water to enter the solar heat collector (11) for heating;
when the water temperature in the water tank (12) does not reach the set temperature, the first stop valve (14) is opened, the second stop valve (16) is closed, and the heated water enters the water tank (12) to heat or replace cold water in the water tank, so that the hot water making process is completed;
when the water temperature in the water tank (12) reaches the set temperature, the first stop valve (14) is closed, the second stop valve (16) is opened, and the heated water enters the phase change heat storage unit (3) to release heat, so that the heat storage process is completed.
14. The control method of an air-conditioning hot water integrated system according to claim 11 or 12, characterized in that when the phase-change heat storage unit (3) finishes heat storage in summer or finishes heat release in winter:
when the refrigerant circulation loop (2) is used for refrigeration and the temperature of the heat storage material is 5-10 ℃ higher than the phase change temperature, the phase change heat storage unit finishes heat storage and releases heat through the second heat exchanger (27);
when the refrigerant circulation loop (2) is used for heating and the temperature of the heat storage material is 5-10 ℃ higher than the ambient temperature, the phase change heat storage unit finishes heat release and absorbs heat through the second heat exchanger (27).
CN202111294496.4A 2021-11-03 2021-11-03 Air conditioner hot water integrated system and control method thereof Pending CN114046575A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115031319A (en) * 2022-07-29 2022-09-09 郑州轻工业大学 Water supply air conditioning system utilizing natural energy and control method
CN115127167A (en) * 2022-08-31 2022-09-30 宁波奥克斯电气股份有限公司 Solar water heating and air conditioning integrated system, control method thereof and air conditioner

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115031319A (en) * 2022-07-29 2022-09-09 郑州轻工业大学 Water supply air conditioning system utilizing natural energy and control method
CN115031319B (en) * 2022-07-29 2024-02-02 郑州轻工业大学 Control method of water supply air conditioning system utilizing natural energy
CN115127167A (en) * 2022-08-31 2022-09-30 宁波奥克斯电气股份有限公司 Solar water heating and air conditioning integrated system, control method thereof and air conditioner
CN115127167B (en) * 2022-08-31 2022-11-25 宁波奥克斯电气股份有限公司 Solar water heating and air conditioning integrated system, control method thereof and air conditioner

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