CN111442494A - Control method and control device for double-refrigeration type air conditioner and double-refrigeration type air conditioner - Google Patents

Control method and control device for double-refrigeration type air conditioner and double-refrigeration type air conditioner Download PDF

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Publication number
CN111442494A
CN111442494A CN202010228341.XA CN202010228341A CN111442494A CN 111442494 A CN111442494 A CN 111442494A CN 202010228341 A CN202010228341 A CN 202010228341A CN 111442494 A CN111442494 A CN 111442494A
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adsorption
refrigeration
medium
air conditioner
adsorption part
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CN111442494B (en
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许文明
王飞
罗荣邦
袁俊军
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Qingdao Haier Air Conditioner Gen Corp Ltd
Haier Smart Home Co Ltd
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Qingdao Haier Air Conditioner Gen Corp Ltd
Haier Smart Home Co Ltd
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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
    • 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
    • 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
    • F24F5/0014—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 absorption or desorption
    • 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
    • F25B25/00—Machines, plants or systems, using a combination of modes of operation covered by two or more of the groups F25B1/00 - F25B23/00
    • F25B25/02—Compression-sorption 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
    • 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
    • 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)
  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Thermal Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Sustainable Development (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Signal Processing (AREA)
  • Fuzzy Systems (AREA)
  • Mathematical Physics (AREA)
  • Sorption Type Refrigeration Machines (AREA)
  • Air Conditioning Control Device (AREA)

Abstract

The application relates to the technical field of intelligent refrigeration of air conditioners and discloses a control method for a double-refrigeration type air conditioner. The control method comprises the following steps: when the double-refrigeration type air conditioner operates in a first mode, acquiring the first adsorption medium quantity of a first adsorption part; wherein the first mode includes: the refrigerant heat exchange system is in a refrigerant refrigeration mode, and the adsorption refrigeration system is in a desorption cold accumulation mode; and controlling the second adsorption part to be communicated with the first adsorption part when the first adsorption medium quantity meets the set medium quantity condition. The control method provided by the embodiment of the disclosure can adjust the operation state of the desorption cold accumulation mode according to the adsorption medium amount of the two adsorption parts, and can adapt the operation state of the adsorption refrigeration system to the current working condition by adjusting the desorption cold accumulation mode according to the adsorption medium amount so as to ensure the working efficiency of the desorption cold accumulation mode. The application also discloses a control device for the double-refrigeration type air conditioner and the double-refrigeration type air conditioner.

Description

Control method and control device for double-refrigeration type air conditioner and double-refrigeration type air conditioner
Technical Field
The application relates to the technical field of intelligent refrigeration of air conditioners, in particular to a control method and a control device for a double-refrigeration type air conditioner and the double-refrigeration type air conditioner.
Background
With the improvement of the science and technology in the world, the structural design and the refrigeration performance of the air conditioner are greatly developed, and the current air conditioner is mainly divided into the following types from the aspect of the refrigeration principle:
(1) refrigerant refrigeration, which utilizes the principle that a refrigerant absorbs or releases heat in the process of gas-liquid two-state change, thereby discharging indoor heat to the outdoor environment;
(2) the adsorption refrigeration realizes the transfer of indoor heat by utilizing the principle that heat release and heat absorption are respectively carried out in the processes of adsorption and desorption of a refrigerant by an adsorbent;
(3) the steam jet type refrigeration is a refrigeration purpose realized by evaporating a refrigerant in a vacuum environment generated by suction by means of the suction action of a steam jet;
(4) the thermoelectric refrigeration utilizes the reverse reaction of the Seebeck effect-the principle of the Peltier effect to achieve the aim of refrigeration, and the common thermoelectric refrigeration mode is semiconductor refrigeration.
In the process of implementing the embodiments of the present disclosure, it is found that at least the following problems exist in the related art:
in the refrigeration technology, refrigerant refrigeration and adsorption refrigeration are refrigeration operations which are respectively realized by adopting different refrigeration structure designs, and have advantages and disadvantages, and the existing air conditioner products generally adopt only one refrigeration structure design and carry out refrigeration through a single refrigeration technology. Therefore, how to apply the two refrigeration technologies to the same air conditioner and effectively improve the performance of the air conditioner is a new idea of air conditioner product design.
Disclosure of Invention
The following presents a simplified summary in order to provide a basic understanding of some aspects of the disclosed embodiments. This summary is not an extensive overview nor is intended to identify key/critical elements or to delineate the scope of such embodiments but rather as a prelude to the more detailed description that is presented later.
The embodiment of the disclosure provides a control method and a control device for a double-refrigeration type air conditioner and the double-refrigeration type air conditioner, which are used for solving the technical problem that the refrigeration work of the air conditioner is not realized by using two refrigeration technologies of refrigerant refrigeration and adsorption refrigeration together in the prior art.
In some embodiments, a control method for a dual refrigeration type air conditioner includes:
when the double-refrigeration type air conditioner operates in a first mode, acquiring the first adsorption medium quantity of a first adsorption part; wherein the first mode includes: the refrigerant heat exchange system is in a refrigerant refrigeration mode, and the adsorption refrigeration system is in a desorption cold accumulation mode;
and controlling the second adsorption part to be communicated with the first adsorption part when the first adsorption medium quantity meets the set medium quantity condition.
In some embodiments, a control apparatus for a dual refrigeration type air conditioner includes:
a processor and a memory storing program instructions, the processor being configured to, upon execution of the program instructions, perform a control method for a dual refrigeration type air conditioner as in some of the foregoing embodiments.
In some embodiments, a dual refrigeration type air conditioner includes:
the refrigerant heat exchange system mainly comprises an indoor heat exchanger, an outdoor heat exchanger, a compressor and a throttling device;
one or more adsorption refrigeration systems, each adsorption refrigeration system comprising:
the evaporation part is arranged at an indoor heat exchanger of the refrigerant heat exchange system;
the first adsorption part is arranged at an outdoor heat exchanger of the refrigerant heat exchange system, and a first adsorption medium conveying flow path capable of being switched on and off is constructed between the first adsorption part and the evaporation part;
the second adsorption part is arranged at a compressor of the refrigerant heat exchange system, and a second adsorption medium conveying flow path which can be switched on and off is constructed between the second adsorption part and the first adsorption part;
a control device for a dual refrigeration type air conditioner as in some of the foregoing embodiments.
The control method and device for the double-refrigeration type air conditioner and the double-refrigeration type air conditioner provided by the embodiment of the disclosure can realize the following technical effects:
the control method for the double-refrigeration type air conditioner can adjust the running state of the desorption cold accumulation mode according to the adsorption medium quantity of the adsorption part, wherein the heat source of the desorption cold accumulation mode is the heat discharged by the refrigerant heat exchange system, so that the desorption cold accumulation process of adsorption refrigeration can be realized without configuring an additional heat source, and the running state of the adsorption refrigeration system can be adapted to the current working condition by adjusting the desorption cold accumulation mode according to the adsorption medium quantity so as to ensure the working efficiency of the desorption cold accumulation mode; the embodiment of the disclosure does not simply superpose two refrigeration systems in the same air conditioner, and skillfully considers the refrigeration principles of the two refrigeration systems to skillfully realize the combination of two sets of refrigeration structures and two processes of refrigerant refrigeration and desorption cold accumulation, thereby not only simplifying the product structure of the combined air conditioner, but also effectively improving the overall refrigeration performance of the air conditioner.
The foregoing general description and the following description are exemplary and explanatory only and are not restrictive of the application.
Drawings
One or more embodiments are illustrated by way of example in the accompanying drawings, which correspond to the accompanying drawings and not in limitation thereof, in which elements having the same reference numeral designations are shown as like elements and not in limitation thereof, and wherein:
fig. 1 is a schematic structural diagram of a dual refrigeration type air conditioner provided in an embodiment of the present disclosure;
fig. 2 is a schematic flowchart of a control method for a dual refrigeration type air conditioner according to an embodiment of the present disclosure;
fig. 3 is a schematic structural diagram of a control device for a dual refrigeration type air conditioner according to an embodiment of the present disclosure.
Detailed Description
So that the manner in which the features and elements of the disclosed embodiments can be understood in detail, a more particular description of the disclosed embodiments, briefly summarized above, may be had by reference to the embodiments, some of which are illustrated in the appended drawings. In the following description of the technology, for purposes of explanation, numerous details are set forth in order to provide a thorough understanding of the disclosed embodiments. However, one or more embodiments may be practiced without these details. In other instances, well-known structures and devices may be shown in simplified form in order to simplify the drawing.
Fig. 1 is a schematic structural diagram of a dual refrigeration type air conditioner provided in an embodiment of the present disclosure.
As shown in fig. 1, an embodiment of the present disclosure provides a dual refrigeration type air conditioner, including a refrigerant heat exchange system and an adsorption refrigeration system; the refrigerant heat exchange system can be a single-cooling type refrigerant heat exchange system which can be used for refrigerating and dehumidifying the indoor environment, and can also be a cooling and heating type refrigerant heat exchange system which can be used for refrigerating, dehumidifying and heating the indoor environment. The adsorption refrigeration system may be used to provide refrigeration to the indoor environment when it is operating in an adsorption refrigeration mode.
In some optional embodiments, taking a cooling and heating type refrigerant heat exchange system as an example, the refrigerant heat exchange system mainly includes an indoor heat exchanger 11, an outdoor heat exchanger 12, a compressor 13, a throttling device 14, and other components; the indoor heat exchanger 11, the outdoor heat exchanger 12, the throttling device 14 and the compressor 13 are connected through refrigerant pipelines to form a refrigerant circulation loop, and the refrigerant flows along the flow direction set by different operation modes through the refrigerant circulation loop, so that the functions of the different operation modes are realized.
Here, the dual cooling type air conditioner includes an indoor unit and an outdoor unit, wherein indoor heat exchange is provided to the indoor unit, and an indoor fan for driving indoor air to exchange heat with the indoor heat exchanger 11 is further provided in the indoor unit; the outdoor heat exchanger 12, the compressor 13, and the like are provided in an outdoor unit, and an outdoor fan for exchanging heat between outdoor air and the outdoor heat exchanger 12 is also disposed in the outdoor unit, wherein the outdoor heat exchanger 12 is provided on an air intake side of the outdoor fan.
In the embodiment, the operation modes of the refrigerant heat exchange system of the double-refrigeration type air conditioner comprise a refrigeration mode, a dehumidification mode, a heating mode and the like, wherein the refrigeration mode is generally applied to a high-temperature working condition in summer and used for reducing the indoor environment temperature; the dehumidification mode is also generally used in summer high-temperature and high-humidity working conditions and used for reducing the indoor environment humidity; the heating mode is generally applied to the low-temperature working condition in winter and is used for increasing the indoor environment temperature.
When the refrigerant heat exchange system operates in the refrigeration mode, the set refrigerant flow direction is that a high-temperature refrigerant discharged by the compressor 13 firstly flows through the outdoor heat exchanger 12 to exchange heat with the outdoor environment, then flows into the indoor heat exchanger 11 to exchange heat with the indoor environment, and finally the refrigerant flows back to the compressor 13 to be compressed again; in this process, the refrigerant flowing through the outdoor heat exchanger 12 emits heat to the outdoor environment, the refrigerant flowing through the indoor heat exchanger 11 absorbs heat from the indoor environment, and the heat in the room can be continuously discharged to the outdoor environment through the circulating flow of the refrigerant in the refrigerant circulation circuit, so that the refrigeration purpose of reducing the temperature of the indoor environment can be achieved.
The flow direction of the refrigerant limited when the refrigerant heat exchange system operates in the dehumidification mode is the same as that of the refrigerant in the refrigeration mode, and the difference is that the temperature and the pressure of the refrigerant flowing into the indoor heat exchanger 11 can be lower by adjusting some operation parameters when the air conditioner operates in the dehumidification mode, such as reducing the flow opening degree of the throttling device 14, so that the indoor heat exchanger 11 can reach lower temperature along with the heat absorption evaporation of the refrigerant, and thus, when the surface temperature of the indoor heat exchanger 11 is lower than the dew point temperature of the current working condition, the water vapor in the indoor air flowing through the indoor heat exchanger 11 can be condensed on the indoor heat exchanger 11, and the purpose of reducing the humidity of the indoor air is achieved.
The refrigerant flow direction set during the heating mode operation means that the high-temperature refrigerant discharged by the compressor 13 firstly flows through the indoor heat exchanger 11 to exchange heat with the outdoor environment, then flows into the outdoor heat exchanger 12 to exchange heat with the indoor environment, and finally flows back to the compressor 13 to be compressed again; in this process, the refrigerant flowing through the indoor heat exchanger 11 emits heat to the indoor environment, the refrigerant flowing through the outdoor heat exchanger 12 absorbs heat from the outdoor environment, and the outdoor heat can be continuously released to the indoor environment through the circulating flow of the refrigerant in the refrigerant circulation loop, so that the heating purpose of increasing the temperature of the indoor environment can be achieved.
In some optional embodiments, each component of the refrigerant heat exchange system is assembled by using a connection structure of an existing refrigerant heat exchange system in the prior art, which is not described herein again.
In some optional embodiments, the dual refrigeration type air conditioner may be provided with only one adsorption refrigeration system, or may be provided with an adsorption refrigeration system group, and the adsorption refrigeration system group includes two or more adsorption refrigeration systems.
Taking one of the adsorption refrigeration systems as an example, the adsorption refrigeration system includes a first adsorption part 21, a second adsorption part 22 and an evaporation part 23, wherein the first adsorption part 21 is disposed at the outdoor heat exchanger 12 of the refrigerant heat exchange system, and is filled with an adsorbent, which is used for absorbing heat of the outdoor heat exchanger 12 in a desorption cold storage stage, releasing an adsorption medium, and adsorbing the adsorption medium and releasing heat in an adsorption refrigeration stage; the second adsorption part 22 is arranged at the compressor 13 of the refrigerant heat exchange system, and the interior of the second adsorption part is filled with an adsorbent which is used for absorbing heat of the compressor 13 in a desorption cold storage stage and then releasing an adsorption medium, and adsorbing the adsorption medium and releasing heat in an adsorption refrigeration stage; the evaporation part 23 is disposed on the indoor side, and is used for storing the liquid adsorption medium from the first adsorption part 21 and the second adsorption part 22 in the desorption cold storage phase, absorbing heat from the indoor environment in the adsorption refrigeration phase, and delivering the vaporized adsorption medium to the first adsorption part 21 and the second adsorption part 22.
In some embodiments, the first adsorption part 21 is disposed between the outdoor fan and the outdoor heat exchanger 12. Here, since the outdoor heat exchanger 12 is disposed on the air inlet side of the outdoor fan, under the driving action of the outdoor fan, the heat dissipated by the outdoor heat exchanger 12 can firstly flow through the first adsorption part 21 sandwiched between the outdoor fan and the outdoor heat exchanger 12, so that the first adsorption part 21 can absorb a large amount of heat for desorption cold accumulation in the desorption cold accumulation stage; meanwhile, the first adsorption part 21 is also positioned at the air inlet side of the outdoor fan, so that the heat released by the first adsorption part 21 can be dissipated to the outdoor environment by using the driving action of the outdoor fan in the adsorption refrigeration stage.
Optionally, the outdoor heat exchanger 12 is a plate-shaped structure, and the cross-sectional profile of the outdoor heat exchanger is in a half-hoop outdoor fan form; therefore, in order to improve the heat exchange effect between the first adsorption part 21 and the outdoor heat exchanger 12, in the embodiment, the overall shape of the first adsorption part 21 is adapted to the outdoor heat exchanger 12, and is also designed to be in a form of half-encircling an outdoor fan, and the first adsorption part is arranged to be attached to the outdoor heat exchanger 12, so that the heat exchange area between the first adsorption part 21 and the outdoor heat exchanger 12 is effectively increased, and the waste heat utilization efficiency of the outdoor heat exchanger 12 is improved.
Here, for the adsorption refrigeration system group, in order to enable the first adsorption parts 21 of the plurality of adsorption refrigeration systems to uniformly absorb heat from the outdoor heat exchanger 12 and avoid the situation that the heat absorption is too small due to the deviation of the first adsorption parts 21 of the individual adsorption refrigeration systems from the outdoor heat exchanger 12, the first adsorption parts 21 of the plurality of adsorption refrigeration systems of the adsorption refrigeration system group are arranged side by side, optionally, the first adsorption parts 21 of the plurality of adsorption refrigeration systems are arranged side by side along the transverse direction or the longitudinal direction of the outdoor heat exchanger 12, and the first adsorption parts 21 are designed into shapes matched with the parts of the corresponding outdoor heat exchanger 12 so as to ensure the heat exchange efficiency of the first adsorption refrigeration system group and the second adsorption refrigeration system.
Optionally, an adsorption medium conveying flow path is also configured between adjacent first adsorption parts 21; in this way, in the desorption cold accumulation and adsorption cold accumulation stages, the gaseous adsorption medium can flow among the plurality of first adsorption parts 21, thereby improving the desorption cold accumulation effect and the adsorption refrigeration effect of the whole adsorption refrigeration system set.
In some embodiments, the second adsorption part 22 is integrally in an encircling structure surrounding at least a part of the body of the compressor 13, so as to increase the heat exchange area between the compressor 13 and the second adsorption part 22 and improve the heat exchange amount.
Optionally, the second adsorption part 22 is a hollow cylindrical structure, and a hollow space can be used for accommodating the compressor 13 and related components thereof, so that when the compressor 13 and related components thereof radiate heat outwards, most of the heat can be conducted to the second adsorption part 22, so as to improve the desorption efficiency of the second adsorption part 22; the second adsorption part 22 has a flow path for the adsorption medium to flow through.
Alternatively, the second adsorption part 22 is provided in conformity with the compressor 13. The mode that the laminating set up can make the heat directly conduct to second adsorption part 22 from compressor 13 through the mode of solid heat conduction, has effectively reduced calorific loss, has improved the utilization efficiency to compressor 13 used heat.
Optionally, for a plurality of adsorption refrigeration system sets, in order to enable the second adsorption parts of the plurality of adsorption refrigeration systems to absorb heat from the compressor 13 uniformly, the second adsorption parts 22 of the plurality of adsorption refrigeration systems of the adsorption refrigeration system sets are arranged side by side in sequence along the longitudinal direction of the compressor 13.
Optionally, the evaporation part 23 is of a plate-fin structure, and the plate-fin structure can effectively improve the heat exchange effect between the adsorption medium in the evaporation part 23 and the indoor environment in the desorption cold storage stage, and enhance the heat absorption and refrigeration capacity; meanwhile, the evaporation unit 23 is formed therein with a flow path through which the adsorbent communicates with the adsorbent transport flow path.
In some optional embodiments, the indoor heat exchanger 11 is in a structural form that the longitudinal section is in a broken line shape and semi-encircles the indoor fan; therefore, in order to improve the heat exchange effect between the evaporation portion 23 and the indoor environment, in this embodiment, the overall shape of the evaporation portion 23 is adapted to the indoor heat exchanger 11, and is also designed to be in a form of a half-encircling indoor fan, and the evaporation portion is attached to the indoor heat exchanger 11, so as to increase the heat exchange area between the evaporation portion 23 and the airflow flowing through the indoor unit, and improve the heat absorption and cooling capacity.
Here, in the adsorption refrigeration system group, in order to enable the evaporation units 23 of the plurality of adsorption refrigeration systems to uniformly absorb heat from the indoor environment, the evaporation units 23 of the plurality of adsorption refrigeration systems are also arranged side by side; alternatively, the evaporation parts 23 of a plurality of adsorption refrigeration systems are arranged side by side along the transverse direction or the longitudinal direction of the indoor heat exchanger 11, and the evaporation parts 23 are designed to be matched with the positions of the corresponding indoor heat exchangers 11.
Alternatively, an adsorption medium transfer flow path is also configured between adjacent evaporation portions 23; in this way, in the desorption cold accumulation and adsorption cold accumulation stages, the liquid and gaseous adsorption media can flow among the plurality of evaporation portions 23, thereby improving the desorption cold accumulation effect and the adsorption refrigeration effect of the whole adsorption refrigeration system set.
In addition, the adsorption refrigeration system further includes an intermediate heat dissipation portion 24; the middle heat dissipation part 24 is disposed on the first adsorption medium conveying flow path, and is configured to receive the gaseous adsorption media conveyed by the first adsorption part 21 and the second adsorption part 22 in the desorption cold storage stage, dissipate heat and condense the gaseous adsorption media, so as to liquefy at least part of the gaseous adsorption media, and continuously convey the liquefied adsorption media to the evaporation part 23 for storage.
Here, the intermediate heat radiating portion 24 is provided outside the room, and it performs heat radiation and condensation of the adsorption medium by heat exchange with the outdoor environment; when the refrigerant heat exchange system operates in a refrigerant refrigeration mode, the outdoor heat exchanger 12 discharges heat outwards, and is influenced by the temperature of the heat, and the temperature of the first adsorption part 21 is generally higher than the outdoor environment temperature; similarly, the temperature of second adsorption part 22 is generally higher than the outdoor ambient temperature due to the temperature of the compressor. Therefore, after the gaseous adsorption media released by the first adsorption part 21 and the second adsorption part 22 under the influence of high-temperature heat flow into the intermediate heat dissipation part 24, the heat is dissipated to the outdoor environment, so that at least part of the gaseous adsorption media is condensed into liquid again.
Optionally, the intermediate heat sink portion 24 is a horizontal flow heat sink.
In some embodiments, the intermediate heat dissipation part 24 is disposed on a back plate, a side plate, or a bottom plate of the outdoor unit of the refrigerant heat exchange system, and is disposed away from the air outlet of the outdoor unit, so as to prevent high-temperature air discharged from the outdoor unit from affecting the heat dissipation effect of the intermediate heat dissipation part.
Preferably, the intermediate heat sink unit 24 is disposed on the bottom plate, and in this arrangement, the outdoor unit can shield the intermediate heat sink unit 24 from sunlight, so as to provide a more suitable heat dissipation temperature environment for the intermediate heat sink unit 24.
Or, because the back plate of the outdoor unit is provided with the air inlet, the middle heat dissipation part 24 can also be arranged close to the air inlet, so that the driving action of the outdoor fan is utilized to accelerate the flow of the ambient air flow around the middle heat dissipation part 24, and the heat dissipation effect is improved.
In the present embodiment, a first adsorption medium transport flow path is formed between the first adsorption part 21 and the evaporation part 23, and the adsorption medium can flow between the first adsorption part 21, the intermediate heat dissipation part 24 and the evaporation part 23 via the first adsorption medium transport flow path.
Here, the first adsorption medium delivery flow path includes a first desorption flow path which is a flow path for desorption cold storage stage adsorption medium delivery and a first adsorption flow path which is a flow rate for adsorption cold storage stage adsorption medium delivery.
In the first desorption flow path, the first adsorption part 21, the intermediate heat dissipation part 24, and the evaporation part 23 are connected in series in this order, so that the adsorption medium flows out of the first adsorption part 21 in the desorption cold storage stage, then sequentially enters the intermediate heat dissipation part 24 and the evaporation part 23, and finally is stored in the evaporation part 23 in a liquid state.
Optionally, a one-way valve is arranged on the first desorption flow path, and the one-way valve limits that the adsorption medium can be conveyed only according to the flow direction of the first adsorption part 21 → the middle heat dissipation part 24 → the evaporation part 23; here, the check valve may be provided in the flow path between the first adsorption part 21 and the intermediate heat radiation part 24, or may be provided in the flow path between the intermediate heat radiation part 24 and the evaporation part 23.
In the first adsorption flow path, the evaporation part 23 and the first adsorption part 21 are connected in series, so that the adsorption medium flows out of the evaporation part 23 in the adsorption refrigeration stage, then enters the first adsorption part 21 through the first adsorption flow path, and is adsorbed again by the adsorbent in the first adsorption part 21.
Optionally, a check valve is disposed in the first adsorption flow path, and the check valve limits the adsorption medium to be transported only in the flow direction of "evaporation portion 23 → first adsorption portion 21".
Alternatively, the first desorption flow path is set as the main flow path, and the first adsorption flow path is set in parallel with the intermediate heat dissipation portion 24, so that the non-parallel flow path segment of the first desorption flow path close to the first adsorption portion 21 can also be used for conveying the adsorption medium in the adsorption refrigeration stage.
Similarly, a second adsorption medium transport flow path is formed between the second adsorption part 22 and the first adsorption part 21, via which the adsorption medium can flow between the second adsorption part 22 and the first adsorption part 21.
Optionally, the second adsorption medium delivery flow path further comprises parallel pipe sections, wherein one parallel pipe section is provided with a first check valve for limiting the flow of the adsorption medium from the first adsorption part 21 to the second adsorption part 22, and the other parallel pipe section is provided with a second check valve for limiting the flow of the adsorption medium from the second adsorption part 22 to the first adsorption part 21.
Here, in the desorption cold accumulation stage, the second check valve may be controlled to be opened, and the first check valve may be controlled to be closed, so that the adsorption medium can flow from the second adsorption part 22 to the first adsorption part 21 only through the second check valve, so that the adsorption medium can flow in the direction of flow evaporation, and the flow of the adsorption medium in the first adsorption part 21 to the second adsorption part 22 may be reduced; in the adsorption refrigeration stage, the opened first check valve can be controlled, and the second check valve is closed, so that the adsorption medium can only flow from the first adsorption part 21 to the second adsorption part 22 through the first check valve, and the adsorption medium in the second adsorption part 22 can be effectively adsorbed by the adsorbent in the adsorption refrigeration stage, and the situation that the adsorption medium flows back to the first adsorption part 21 is reduced.
In this embodiment, the adsorption refrigeration system further includes two control valves, wherein the first control valve 25 is disposed on the first adsorption medium transportation flow path for controlling the on-off state and flow rate of the first adsorption medium transportation flow path, and the second control valve 26 is disposed on the second adsorption medium transportation flow path for controlling the on-off state and flow rate of the second adsorption medium transportation flow path. Here, the first control valve is provided in the non-parallel flow path section of the first desorption flow path close to the corresponding first adsorption unit in the above embodiment, so that the flow rate on/off control can be performed in two stages of desorption heat accumulation and adsorption cooling for the first adsorption unit 21 and the second adsorption unit 22 only by the single first control valve 25.
Alternatively, a control valve may be provided in each of the desorption flow path and the adsorption flow path of the first adsorption medium transport flow path to control the on/off state and the flow rate of the corresponding flow path by the control valve.
The following describes the working mode of the adsorption refrigeration system and the refrigerant heat exchange system in the embodiment of the present disclosure:
in this embodiment, the operation modes of the adsorption refrigeration system mainly include a desorption cold accumulation mode and an adsorption refrigeration mode, wherein the desorption cold accumulation mode corresponds to the desorption cold accumulation stage in the previous embodiments and is mainly used for accumulating "cold"; the adsorption refrigeration mode corresponds to the adsorption refrigeration stage in the previous embodiment, and is mainly used for releasing cold energy accumulated in the desorption cold storage stage, so that refrigeration and temperature reduction of the indoor side where the adsorption refrigeration mode is located are realized.
Here, the desorption and cold accumulation mode of the adsorption refrigeration system is operated on the premise that the refrigerant heat exchange system operates in the refrigerant refrigeration mode or the refrigerant dehumidification mode. Here, when the refrigerant heat exchange system operates in the refrigerant cooling mode, the outdoor heat exchanger 12 and the compressor 13 simultaneously emit heat, the heat is transferred to the first adsorption unit 21 and the second adsorption unit 22, the adsorption media adsorbed by the adsorbents in the two adsorption units absorb heat and desorb the heat into a gaseous adsorption medium, the adsorption medium in the second adsorption unit 22 flows into the first adsorption unit 21 through the second adsorption medium transportation flow path, and enters the intermediate heat dissipation unit 24 through the desorption flow path together with the gaseous adsorption medium in the first adsorption unit 21 to be condensed, and the condensed liquid adsorption medium enters the evaporation unit 23 as "cold" stored therein.
The adsorption refrigeration system operates in the adsorption refrigeration mode on the premise that the refrigerant heat exchange system does not operate in the refrigerant refrigeration mode or the refrigerant dehumidification mode. Here, when the refrigerant heat exchange system is not operating in the refrigerant cooling mode or the refrigerant dehumidification mode, the outdoor heat exchanger 12 and the compressor 13 are both stopped and do not release heat, so that the temperature of the first adsorption part 21 is lower than that of the outdoor heat exchanger 12 when releasing heat, and the temperature of the second adsorption part 22 is lower than that of the compressor 13 when releasing heat, so that the adsorbents in the two adsorption parts start to adsorb the adsorption medium again, the liquid adsorption medium in the evaporation part 23 starts to absorb heat and evaporate into a gaseous adsorption medium under the common influence of various factors such as the concentration, pressure and indoor ambient temperature of the adsorption medium, and flows back to the first adsorption part 21 through the first adsorption flow path, and then part of the gaseous adsorption medium flows back to the second adsorption part 22 through the second adsorption medium delivery flow path, during which the adsorption medium absorbs heat from the indoor environment and after the adsorption medium is re-adsorbed by the adsorbent, the heat is released to the outdoor environment where the adsorption part is located, and therefore, the adsorption refrigeration and temperature reduction of the indoor environment can be realized by the reverse flow of the adsorption medium compared with the desorption cold storage stage.
Here, in the desorption cold storage mode and the adsorption refrigeration mode, only one of the first adsorption parts 21 may be activated, or two of the first adsorption part 21 and the second adsorption part 22 may be activated.
Fig. 2 is a schematic flowchart of a control method for a dual refrigeration type air conditioner according to an embodiment of the present disclosure.
As shown in fig. 2, a control method for a dual refrigeration type air conditioner is provided in the embodiment of the present disclosure, and optionally, the control method may be applied to the dual refrigeration type air conditioner as shown in the embodiment of fig. 1; the control method can be used for solving the problem that the refrigeration work of the air conditioner is not realized by two refrigeration technologies of refrigerant refrigeration and adsorption refrigeration in the prior art; in an embodiment, the main flow steps of the control method include:
s201, when the double-refrigeration type air conditioner operates in a first mode, acquiring a first adsorption medium quantity of a first adsorption part;
in an embodiment of the present disclosure, the first mode includes: the refrigerant heat exchange system is in a refrigerant refrigeration mode, and the adsorption refrigeration system is in a desorption cold accumulation mode.
In the high-temperature working condition in summer, when the double-refrigeration type air conditioner is started to operate, the default starting mode of the refrigerant heat exchange system is that the refrigerant heat exchange system operates in a refrigerant refrigeration mode, and in the process, an indoor heat exchanger of the refrigerant heat exchange system starts to absorb heat from the indoor environment so as to reduce the temperature of the indoor environment; meanwhile, the heat absorbed by the indoor heat exchanger is conveyed to the outdoor heat exchanger along with the refrigerant, and is discharged to the outdoor environment through the heat exchange process between the outdoor heat exchanger and the outdoor environment, and the temperature of the outdoor heat exchanger is higher than that of the outdoor environment at the moment.
When the refrigerant heat exchange system operates a refrigerant refrigeration mode, the adsorption refrigeration system enters a desorption cold accumulation mode; the outdoor heat exchanger and the compressor discharge heat to the surrounding environment, so that the temperature of the surrounding environment rises, the adsorption media in the first adsorption part of the adsorption refrigeration system arranged close to the outdoor heat exchanger and the second adsorption part of the adsorption refrigeration system arranged close to the compressor absorb heat and then are separated from the adsorbent, desorption is realized, the desorbed adsorption media flow to the corresponding middle heat dissipation parts along with the adsorption media conveying flow path, and the temperature of the middle heat dissipation parts is lower than that of the outdoor heat exchanger and the compressor, so that the adsorption media release heat and condense and continue to flow into the indoor evaporation part along with the adsorption media conveying flow path, and cold accumulation is realized.
In this embodiment, when the refrigerant heat exchange system is in the refrigerant refrigeration mode, the compressor is started, and the refrigerant is conveyed in the refrigerant heat exchange system according to the refrigeration flow direction; and when the adsorption refrigeration system is in a desorption cold accumulation mode, controlling to open a control valve arranged on the adsorption medium conveying flow path so as to enable the flow path for conveying the adsorption medium from the adsorption part to the evaporation part to be conducted, wherein along with the continuous operation of the desorption cold accumulation mode, the adsorption medium of the adsorption part is reduced, the adsorption medium of the evaporation part is increased, and the cold energy used for the adsorption refrigeration mode is stored in the evaporation part.
In some alternative embodiments, the first adsorbent media amount of the first adsorbent portion may be determined by detecting a change in weight of the adsorbent portion.
For example, the step S201 of acquiring the amount of the adsorption medium in the adsorption part includes: detecting a first weight of the first adsorption part; and acquiring the corresponding first adsorption medium quantity from a preset incidence relation according to the first weight of the first adsorption part.
In the embodiment, the bottom of the first adsorption part is provided with a weighing sensor which can be used for detecting the real-time weight of the whole first adsorption part; here, before the first mode starts to operate, the adsorption medium is mostly concentrated in the first adsorption part, so the weight detected by the load cell at this time is mainly the sum of the weights of the adsorption medium, the adsorbent and the structure of the first adsorption part itself; in the first mode operation, only the adsorption medium absorbs heat and then changes into a gas state and leaves the first adsorption part, and the weight of the whole first adsorption part changes, that is, the quantity of the adsorption medium changes.
Here, the preset correlation includes a one-to-one correspondence relationship between different first adsorption part weights and first adsorption medium amounts. For example, when the weight of the first adsorption part is a, the first adsorption medium amount is a; and when the weight of the first adsorption part is B, the first adsorption medium amount is B, and so on.
In this way, in the specific implementation of step S201, the corresponding first adsorption medium amount can be obtained from the preset correlation according to the weight of the first adsorption part.
In some alternative embodiments, the first adsorption medium quantity of the first adsorption part can also be determined by detecting the adsorption medium flow rate delivered by the adsorption part to the evaporation part.
For example, the step S201 of acquiring the amount of the adsorption medium of the first adsorption part includes: detecting the flow rate of the first adsorption medium conveyed from the first adsorption part to the evaporation part; the first adsorption medium amount of the first adsorption part is determined according to the adsorption medium flow rate.
In this embodiment, a flow meter is arranged on the first sorption medium delivery flow path between the first sorption part and the evaporation part, which flow meter can be used to detect the amount of first sorption medium flowing through the first sorption medium delivery flow path during the first mode of operation. Similarly, the adsorption medium is mostly concentrated in the first adsorption part before the operation in the first mode is started, and during the operation in the first mode, only the adsorption medium absorbs heat and changes to a gaseous state and leaves the first adsorption part, so that the sum of the flow rates detected by the flow meter is the amount of change in the amount of the first adsorption medium.
For example, before the first mode operation is started, assuming that all the adsorption media are in the first adsorption part and the adsorption media amount is C, and the flow rate detected by the flow meter at a certain time during the first mode operation is neutralized to C, the difference between the two, that is, C-C, of the first adsorption medium amount of the first adsorption part can be calculated.
In this way, in the specific execution of step S201, the first adsorption medium amount of the first adsorption part can be determined based on the first adsorption medium flow rate.
Optionally, the manner of acquiring the second adsorption medium quantity of the second adsorption part may refer to the manner of acquiring the first adsorption medium quantity in the above embodiment, which is not described herein again.
S202, when the first adsorption medium quantity meets the set medium quantity condition, the second adsorption part is controlled to be conducted with the first adsorption part.
Here, the medium amount condition is set for representing the amount of the medium in the first adsorption part when the desorption cold accumulation is completed. When the first adsorption medium quantity of the first adsorption part meets the set medium quantity condition, the desorption cold accumulation effect of the first adsorption part is finished, and the adsorption medium cannot be continuously conveyed from the first adsorption part to the evaporation part when the desorption cold accumulation mode is continuously operated; and when the first adsorption medium quantity of the first adsorption part does not meet the set medium quantity condition, the desorption cold accumulation effect of the first adsorption part is not finished, and the first adsorption part can continuously convey the first adsorption medium to the evaporation part to adsorb the refrigeration system.
In the present embodiment, when the first mode starts operating, the second suction unit and the first suction unit are in the blocked state by default. Controlling the second adsorption part to be communicated with the first adsorption part under the condition that the first adsorption medium quantity of the first adsorption part meets the set medium quantity condition; and when the first adsorption medium quantity of the first adsorption part does not meet the set medium quantity condition, the second adsorption part and the first adsorption part are controlled to keep the blocking state unchanged.
Here, when the amount of the adsorption medium in the first adsorption part satisfies the set medium amount condition, the adsorption medium transfer line between the first adsorption part and the second adsorption part is opened, whereby the adsorption medium in the second adsorption part can be further transferred to the evaporation part via the first adsorption part, and since the temperature of the second adsorption part is generally higher than that of the first adsorption part, the pressure of the adsorption medium in the second adsorption part becomes higher than that of the first adsorption part, and the adsorption medium can be transferred in the order of the second adsorption part → the first adsorption part → the evaporation part, thereby increasing the cold storage amount and the cold storage efficiency of desorption.
In some embodiments, setting the media amount condition comprises: the amount of change in the adsorption medium in the adsorption section is greater than or equal to a set variable threshold.
Alternatively, the variable threshold is set to 70%, 80%, etc. of the total amount of the adsorption medium.
Here, the step of determining whether the first adsorbed medium amount satisfies the set medium amount condition in step S202 under the above-described set medium amount condition includes: acquiring a first weight of the first adsorption part; calculating a first weight difference between the first initial weight and the first weight, and determining a first adsorption medium variation of the first adsorption part according to the first weight difference; and determining whether the set medium quality condition is met or not according to the first adsorption medium variation.
Here, the initial weight and the current weight of the first adsorption part, which are detected before the adsorption refrigeration enters the desorption cold storage mode, may be detected by the load cell shown in the foregoing embodiment.
The double-refrigeration type air conditioner stores an incidence relation which comprises a corresponding relation between the weight difference and the variable quantity of the adsorption medium, so that the variable quantity of the first adsorption medium matched with the first weight difference can be obtained by searching the incidence relation.
For example, the initial weight detected by the first adsorption part before entering the desorption cold storage mode is a1, and the currently detected weight of the first adsorption part is a2, then the first adsorption medium variation B1 can be found from the preset correlation according to the weight difference a1-a 2;
and comparing the magnitude between the first adsorption medium variation B1 and a set variable threshold value 70% × B, wherein B is the total amount of the adsorption medium, if B1 is more than or equal to 70% × B, the first adsorption part meets the set medium quality condition, and if B1 is less than 70% × B, the first adsorption part does not meet the set medium quality condition.
In some optional embodiments, the control method for the dual refrigeration type air conditioner of the present disclosure further includes: and when the first adsorption medium quantity and the second adsorption medium quantity both meet the set medium quantity condition, controlling the adsorption refrigeration system to exit the desorption cold storage mode.
Here, the second adsorption medium amount is the adsorption medium amount of the second adsorption part. Optionally, the second adsorption medium quantity is obtained in the same manner as the first adsorption medium quantity, and details are not described here.
In this embodiment, when both the first adsorption medium quantity and the second adsorption medium quantity satisfy the set medium quantity condition, both the first adsorption part and the second adsorption part have completed the desorption cold storage function, and sufficient "cold energy" has been stored in the evaporation part, so that the adsorption refrigeration system can be controlled to exit the desorption cold storage mode.
Optionally, controlling the adsorption refrigeration system to exit the desorption cold storage mode includes: performing a first pipeline disconnection operation; after the first pipeline disconnection operation is performed for a first period of time, a second pipeline disconnection operation is performed.
The first pipeline disconnection operation is used for controlling and blocking the adsorption medium flow path between the second adsorption part and the first adsorption part, so that the second adsorption part is disconnected from the first adsorption part. Here, since the second adsorption part conveys the refrigerant to the evaporation part through the first adsorption part, the first pipeline disconnection operation is performed first, so that the second adsorption part cannot convey the refrigerant to the first adsorption part continuously, and the heat of the compressor is prevented from being accumulated in the first adsorption part excessively to influence the heat dissipation efficiency of the outdoor heat exchanger after the desorption cold accumulation mode exits.
Optionally, the first duration is a fixed duration, and a value range of the first duration is 1min to 3 min.
Here, after the first line disconnection operation is performed for a first period of time, a second line disconnection operation for controlling the first adsorption part to be disconnected from the evaporation part is performed. The residual adsorption medium in the adsorption medium conveying flow path can flow into the evaporation part for a sufficient time, so that the cold accumulation amount can be increased, and the residual adsorption medium in the conveying flow path can be effectively reduced.
Alternatively, a control valve may be provided on the second adsorption medium delivery flow path communicating between the second adsorption part and the first adsorption part, so that the execution of the first line disconnection operation may be performed by closing the control valve. Furthermore, a control valve is also provided on the first adsorption medium delivery flow path communicating between the first adsorption part and the evaporation part, so that the second line shut-off operation can be performed by closing the control valve.
Still alternatively, the first period of time is determined based on a coil temperature of the outdoor heat exchanger and a discharge temperature of the compressor. Here, since the heat sources of the first adsorption part and the second adsorption part are respectively from the outdoor heat exchanger and the compressor, the coil temperature of the outdoor heat exchanger can affect the pressure of the adsorption medium in the first adsorption part, and the discharge temperature of the compressor can affect the pressure of the adsorption medium in the second adsorption part; after the first pipeline disconnection operation is performed, the pressure of the adsorption medium between the first adsorption part and the second adsorption part can influence the conveying speed of the adsorption medium remained in the second adsorption medium conveying flow path and the conveying speed of the adsorption medium to the evaporation part through the first adsorption part; therefore, the first time period of the embodiment of the present disclosure is determined according to the coil temperature of the outdoor heat exchanger and the discharge temperature of the compressor, so that the adsorption medium transfer flow path and the residual adsorption medium in the first adsorption part can have a sufficient time to flow into the evaporation part.
Optionally, the outdoor unit of the dual-refrigeration air conditioner is provided with two temperature sensors, wherein one temperature sensor is arranged at the coil position of the outdoor heat exchanger and can be used for detecting the real-time coil temperature of the outdoor heat exchanger; another temperature sensor is disposed at the discharge end of the compressor and is used to detect the discharge temperature of the compressor in real time.
In some embodiments, determining the first time period based on a coil temperature of the outdoor heat exchanger and a discharge temperature of the compressor comprises: and acquiring a first duration from a preset incidence relation according to a temperature ratio between the temperature of the coil pipe and the temperature of the exhaust gas.
Here, the preset association includes a one-to-one correspondence of one or more temperature ratios to the first time period; for example, when the temperature ratio is T11/T21, the corresponding first time length is T1; when the temperature ratio is T12/T22, the corresponding first time period is T2, and so on. In the preset correlation, the temperature ratio is in positive correlation with the first time length, that is, the smaller the temperature ratio between the coil temperature and the exhaust temperature is, the larger the difference in pressure of the adsorption medium between the first adsorption part and the second adsorption part is, and thus the faster the transport speed of the adsorption medium is, the residual adsorption medium can be transported to the evaporation part in a shorter time, and the first time length can be set to be a smaller value.
In this embodiment, confirm first time according to outdoor heat exchanger's coil pipe temperature and the exhaust temperature of compressor and carry the effect, can guarantee to remain absorbent recovery to can improve absorption refrigeration system's cold-storage volume, thereby promote absorption refrigeration system's performance.
In some optional embodiments, the control method for the dual refrigeration type air conditioner of the present disclosure further includes: and when the preset adsorption refrigeration triggering condition is met, controlling the adsorption refrigeration system to enter an adsorption refrigeration mode.
Optionally, the adsorption refrigeration triggering condition includes: the temperature difference between the indoor environment temperature and the target refrigerating temperature is smaller than or equal to the set temperature difference threshold.
Here, when controlling the adsorption refrigeration system to enter the adsorption refrigeration mode, the refrigerant heat exchange system is in a shutdown state or a standby state, so as to avoid the problem that the adsorption refrigeration mode cannot be normally performed due to the overhigh temperature of the outdoor heat exchanger when the refrigerant heat exchange system operates the refrigerant refrigeration mode. Therefore, the indoor environment is refrigerated and cooled by replacing the refrigerant heat exchange system in the adsorption refrigeration mode, the operation energy consumption of the refrigerant heat exchange system can be reduced, and the use cost of the air conditioner is reduced.
In some optional embodiments, the control flow of the control method for the dual refrigeration type air conditioner of the present disclosure further includes: when the adsorption refrigeration system enters an adsorption refrigeration mode, an outdoor fan of the refrigerant heat exchange system is controlled to operate at a set rotating speed.
In this embodiment, the ambient temperature around the adsorption part of the adsorption refrigeration system can affect the amount of the adsorption medium adsorbed in the adsorption refrigeration process to a certain extent; when the ambient temperature is low, the amount of the adsorption medium adsorbed by the adsorption part is large, whereas the amount of the adsorption medium adsorbed by the adsorption part is small. Therefore, after the adsorption refrigeration system enters the adsorption refrigeration mode, the outdoor fan of the refrigerant heat exchange system is continuously controlled to operate at a set rotating speed, the dissipation of heat released in the adsorption process can be accelerated in a convection mode, so that the adsorption medium can be adsorbed more quickly, more adsorption medium can be adsorbed, the heat absorption vaporization of the adsorption medium in the evaporation part can be promoted, and the refrigeration effect of the adsorption refrigeration system is improved.
Alternatively, the set rotation speed is determined based on the outdoor ambient temperature. Here, after the adsorption refrigeration system enters the adsorption refrigeration mode, the temperature affecting the ambient environment of the adsorption part is mainly the outdoor ambient temperature, and therefore, the rotation speed is flexibly adjusted and set according to the outdoor ambient temperature, and heat dissipation in the adsorption process of the adsorption part can be facilitated.
In this embodiment, the corresponding relationship between the set rotation speed and the outdoor environment temperature is preset in the air conditioner, and the set rotation speed corresponding to the current outdoor environment temperature can be determined by searching the corresponding relationship, so as to control the operation of the outdoor fan according to the determined set rotation speed.
Optionally, the set rotation speed in the corresponding relationship is in a positive correlation with the outdoor environment temperature, that is, the higher the outdoor environment temperature is, the higher the set rotation speed is, so as to avoid accumulation of heat around the adsorption part as much as possible by accelerating the airflow flowing, so as to improve the medium adsorption effect of the adsorption part.
Fig. 3 is a schematic structural diagram of a control device for a dual refrigeration type air conditioner according to an embodiment of the present disclosure.
The embodiment of the present disclosure provides a control device for a dual refrigeration type air conditioner, the structure of which is shown in fig. 3, including:
a processor (processor)300 and a memory (memory)301, and may further include a Communication Interface 302 and a bus 303. The processor 300, the communication interface 302 and the memory 301 may communicate with each other via a bus 303. The communication interface 302 may be used for information transfer. The processor 300 may call logic instructions in the memory 301 to perform the control method for the dual cooling type air conditioner of the above embodiment.
In addition, the logic instructions in the memory 301 may be implemented in the form of software functional units and stored in a computer readable storage medium when the logic instructions are sold or used as independent products.
The memory 301 is a computer-readable storage medium, and can be used for storing software programs, computer-executable programs, such as program instructions/modules corresponding to the methods in the embodiments of the present disclosure. The processor 300 executes functional applications and data processing by executing program instructions/modules stored in the memory 301, that is, implements the control method for the dual refrigeration type air conditioner in the above-described method embodiment.
The memory 301 may include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required for at least one function; the storage data area may store data created according to the use of the terminal device, and the like. Further, the memory 301 may include a high-speed random access memory, and may also include a nonvolatile memory.
Here, the implementation of the present disclosure provides a dual refrigeration type air conditioner further including a control device for the dual refrigeration type air conditioner shown in the foregoing embodiments.
The embodiment of the disclosure also provides a computer-readable storage medium storing computer-executable instructions configured to execute the control method for the dual refrigeration type air conditioner.
The disclosed embodiments also provide a computer program product including a computer program stored on a computer-readable storage medium, the computer program including program instructions that, when executed by a computer, cause the computer to perform the above-described control method for a dual refrigeration type air conditioner.
The computer-readable storage medium described above may be a transitory computer-readable storage medium or a non-transitory computer-readable storage medium.
The technical solution of the embodiments of the present disclosure may be embodied in the form of a software product, where the computer software product is stored in a storage medium and includes one or more instructions to enable a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method of the embodiments of the present disclosure. And the aforementioned storage medium may be a non-transitory storage medium comprising: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes, and may also be a transient storage medium.
The above description and drawings sufficiently illustrate embodiments of the disclosure to enable those skilled in the art to practice them. Other embodiments may incorporate structural, logical, electrical, process, and other changes. The examples merely typify possible variations. Individual components and functions are optional unless explicitly required, and the sequence of operations may vary. Portions and features of some embodiments may be included in or substituted for those of others. The scope of the disclosed embodiments includes the full ambit of the claims, as well as all available equivalents of the claims. As used in this application, although the terms "first," "second," etc. may be used in this application to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another. For example, a first element could be termed a second element, and, similarly, a second element could be termed a first element, unless the meaning of the description changes, so long as all occurrences of the "first element" are renamed consistently and all occurrences of the "second element" are renamed consistently. The first and second elements are both elements, but may not be the same element. Furthermore, the words used in the specification are words of description only and are not intended to limit the claims. As used in the description of the embodiments and the claims, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. Similarly, the term "and/or" as used in this application is meant to encompass any and all possible combinations of one or more of the associated listed. Furthermore, the terms "comprises" and/or "comprising," when used in this application, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. Without further limitation, an element defined by the phrase "comprising an …" does not exclude the presence of other like elements in a process, method or apparatus that comprises the element. In this document, each embodiment may be described with emphasis on differences from other embodiments, and the same and similar parts between the respective embodiments may be referred to each other. For methods, products, etc. of the embodiment disclosures, reference may be made to the description of the method section for relevance if it corresponds to the method section of the embodiment disclosure.
Those of skill in the art would appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software may depend upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the disclosed embodiments. It can be clearly understood by the skilled person that, for convenience and brevity of description, the specific working processes of the system, the apparatus and the unit described above may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the embodiments disclosed herein, the disclosed methods, products (including but not limited to devices, apparatuses, etc.) may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units may be merely a logical division, and in actual implementation, there may be another division, for example, multiple units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form. The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to implement the present embodiment. In addition, functional units in the embodiments of the present disclosure may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.
The flowchart and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of systems, methods and computer program products according to embodiments of the present disclosure. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). In some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. In the description corresponding to the flowcharts and block diagrams in the figures, operations or steps corresponding to different blocks may also occur in different orders than disclosed in the description, and sometimes there is no specific order between the different operations or steps. For example, two sequential operations or steps may in fact be executed substantially concurrently, or they may sometimes be executed in the reverse order, depending upon the functionality involved. Each block of the block diagrams and/or flowchart illustrations, and combinations of blocks in the block diagrams and/or flowchart illustrations, can be implemented by special purpose hardware-based systems that perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.

Claims (10)

1. The control method is applied to the double-refrigeration type air conditioner, and is characterized in that the double-refrigeration type air conditioner comprises a refrigerant heat exchange system and an adsorption refrigeration system; the adsorption refrigeration system comprises an evaporation part arranged at the indoor side, a first adsorption part and a second adsorption part, wherein the first adsorption part and the second adsorption part are respectively arranged at an outdoor heat exchanger and a compressor of the refrigerant heat exchange system;
the control method comprises the following steps:
when the double-refrigeration type air conditioner operates in a first mode, acquiring the first adsorption medium quantity of the first adsorption part; wherein the first mode comprises: the refrigerant heat exchange system is in a refrigerant refrigeration mode, and the adsorption refrigeration system is in a desorption cold accumulation mode;
and controlling the second adsorption part to be conducted with the first adsorption part when the first adsorption medium quantity meets a set medium quantity condition.
2. The control method according to claim 1, wherein the setting the medium quality condition includes: the amount of change in the adsorption medium in the adsorption section is greater than or equal to a set variable threshold.
3. The control method according to claim 2, wherein determining that the first amount of the adsorbed medium satisfies a set medium amount condition comprises:
acquiring a first weight of the first adsorption part;
calculating a first weight difference between a first initial weight and the first weight, and determining a first adsorption medium variation of the first adsorption part according to the first weight difference;
and determining whether the set medium amount condition is met or not according to the first adsorption medium variation.
4. The control method according to claim 1, characterized by further comprising: when the first adsorption medium quantity and the second adsorption medium quantity both meet a set medium quantity condition, controlling the adsorption refrigeration system to exit a desorption cold storage mode;
the control of the adsorption refrigeration system to exit the desorption cold accumulation mode comprises the following steps:
performing a first pipeline disconnecting operation for controlling the second adsorption part to be disconnected from the first adsorption part;
after the first pipeline disconnecting operation is performed for a first period of time, performing a second pipeline disconnecting operation, wherein the second pipeline disconnecting operation is used for controlling the first adsorption part to be disconnected from the evaporation part.
5. The control method of claim 4, wherein the first period of time is determined based on a coil temperature of the outdoor heat exchanger and a discharge temperature of the compressor.
6. The control method of claim 5, wherein determining the first duration as a function of a coil temperature of an outdoor heat exchanger and a discharge temperature of the compressor comprises:
acquiring the first duration from a preset incidence relation according to a temperature ratio between the coil temperature and the exhaust temperature;
the preset incidence relation comprises one-to-one correspondence relation between one or more temperature ratios and the first time length.
7. The control method according to claim 6, wherein the preset correlation is a positive correlation between the temperature ratio and the first time period.
8. The control method according to claim 1, characterized by further comprising:
and when the preset adsorption refrigeration triggering condition is met, controlling the adsorption refrigeration system to enter an adsorption refrigeration mode.
9. A control device applied to a double-refrigeration type air conditioner is characterized in that the double-refrigeration type air conditioner comprises a refrigerant heat exchange system and an adsorption refrigeration system; the adsorption refrigeration system comprises an evaporation part arranged at the indoor side, a first adsorption part and a second adsorption part, wherein the first adsorption part and the second adsorption part are respectively arranged at an outdoor heat exchanger and a compressor of the refrigerant heat exchange system;
the control device comprises a processor and a memory storing program instructions, the processor being configured to execute the control method applied to the dual refrigeration type air conditioner according to any one of claims 1 to 8 when executing the program instructions.
10. A dual refrigeration type air conditioner, comprising:
the refrigerant heat exchange system mainly comprises an indoor heat exchanger, an outdoor heat exchanger, a compressor and a throttling device;
one or more adsorption refrigeration systems, each of said adsorption refrigeration systems comprising:
the evaporation part is arranged at an indoor heat exchanger of the refrigerant heat exchange system;
the first adsorption part is arranged at an outdoor heat exchanger of the refrigerant heat exchange system, and a first adsorption medium conveying flow path capable of being switched on and off is constructed between the first adsorption part and the evaporation part;
the second adsorption part is arranged at a compressor of the refrigerant heat exchange system, and a second adsorption medium conveying flow path capable of being switched on and off is formed between the second adsorption part and the first adsorption part;
the control device for the dual cooling type air conditioner as claimed in claim 9.
CN202010228341.XA 2020-03-27 2020-03-27 Control method and control device for double-refrigeration type air conditioner and double-refrigeration type air conditioner Active CN111442494B (en)

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CN103292393A (en) * 2012-03-02 2013-09-11 珠海格力电器股份有限公司 Solar photovoltaic photo-thermal combined air conditioner
CN108168145A (en) * 2017-12-29 2018-06-15 广东申菱环境***股份有限公司 A kind of refrigeration system and its control method adsorbed with steam compressed combination

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003312240A (en) * 2002-04-19 2003-11-06 Denso Corp Air conditioner for vehicle
CN1495398A (en) * 2002-08-15 2004-05-12 三菱化学株式会社 Adsorbent, heat storage system containing the same, iron-aluminium phosphate and its producing method
CN102141322A (en) * 2010-12-09 2011-08-03 山东大学 Absorption-mechanical compression coupling refrigeration and cold accumulation system
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CN103292393A (en) * 2012-03-02 2013-09-11 珠海格力电器股份有限公司 Solar photovoltaic photo-thermal combined air conditioner
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