CN112393402A - 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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CN112393402A
CN112393402A CN202011092807.4A CN202011092807A CN112393402A CN 112393402 A CN112393402 A CN 112393402A CN 202011092807 A CN202011092807 A CN 202011092807A CN 112393402 A CN112393402 A CN 112393402A
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adsorption
refrigeration
outdoor
temperature
air conditioner
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代传民
许文明
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Qingdao Haier Smart Technology R&D Co Ltd
Haier Smart Home Co Ltd
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Qingdao Haier Smart Technology R&D Co Ltd
Haier Smart Home Co Ltd
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Priority to CN202011092807.4A priority Critical patent/CN112393402A/en
Publication of CN112393402A publication Critical patent/CN112393402A/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
    • F24F11/00—Control or safety arrangements
    • F24F11/89—Arrangement or mounting of control or safety devices
    • 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
    • F24F11/64—Electronic processing using pre-stored data
    • 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
    • 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
    • F25B39/00—Evaporators; Condensers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00—Control inputs relating to air properties
    • F24F2110/10—Temperature

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Signal Processing (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Thermal Sciences (AREA)
  • Fuzzy Systems (AREA)
  • Mathematical Physics (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, the temperature of an outdoor coil of an outdoor heat exchanger is obtained; 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 adjusting the flow of the adsorption medium flowing to the evaporation part from the first adsorption part according to the temperature of the outdoor coil of the outdoor heat exchanger. The control method provided by the embodiment of the disclosure can adjust the flow state of the desorption cold accumulation mode according to the temperature of the outdoor coil, so that the running state of the adsorption refrigeration system is matched with the current working condition, the working efficiency of the desorption cold accumulation mode is ensured, and the overall refrigeration performance of the air conditioner is effectively improved. 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, the temperature of an outdoor coil of an outdoor heat exchanger is obtained; 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 adjusting the flow of the adsorption medium flowing to the evaporation part from the first adsorption part according to the temperature of the outdoor coil of the outdoor heat exchanger.
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 capable of being switched on and off is constructed between the second adsorption part and the evaporation 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 flow state of the desorption cold accumulation mode according to the outdoor coil, 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 operation state of the adsorption refrigeration system can be adapted to the current working condition by adjusting the flow of the desorption cold accumulation mode according to the temperature of the outdoor coil 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 at the indoor side, and is used for storing the liquid adsorption medium from the first adsorption part 21 and/or 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 evaporated adsorption medium to the first adsorption part 21 and/or 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.
Alternatively, for a plurality of adsorption refrigeration system groups, in order to enable the second adsorption parts of the plurality of adsorption refrigeration systems to uniformly absorb heat from the compressor 13, the second adsorption parts 22 of the plurality of adsorption refrigeration systems of the adsorption refrigeration system group are sequentially arranged side by side 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 a first intermediate heat sink portion 24; the first intermediate heat sink portion 24 is disposed on the first adsorption medium delivery flow path, and is configured to receive the gaseous adsorption medium delivered by the first adsorption portion 21 in the desorption cold storage stage, and perform heat dissipation and condensation on the gaseous adsorption medium, so as to liquefy at least part of the gaseous adsorption medium, and further deliver the liquefied adsorption medium to the evaporation portion 23 for storage.
Here, the first intermediate heat sink portion 24 is provided outside the room, and it is heat-dissipating and condensing of the adsorption medium by heat exchange with the outdoor environment; when the refrigerant heat exchange system operates in the refrigerant cooling mode, the outdoor heat exchanger 12 discharges heat to the outside, and the temperature of the first adsorption part 21 is generally higher than the outdoor environment temperature, so that after the gaseous adsorption medium released by the first adsorption part 21 influenced by the high-temperature heat flows into the first intermediate heat dissipation part 24, the heat is dissipated to the outdoor environment, and at least part of the gaseous adsorption medium is condensed into liquid again.
Meanwhile, the adsorption refrigeration system further includes a second intermediate heat dissipation portion 25; the second intermediate heat sink portion 25 is disposed on the second adsorbent medium delivery flow path, and is configured to receive the gaseous adsorbent medium delivered by the second adsorbent portion 22 in the desorption cold storage stage, and perform heat dissipation and condensation on the gaseous adsorbent medium, so as to liquefy at least a portion of the gaseous adsorbent medium, and continue to deliver the liquefied adsorbent medium to the evaporation portion 23 for storage.
Here, the second intermediate heat radiation part 25 is also provided outside the room, and it performs heat radiation and condensation on the adsorption medium by heat exchange with the outdoor environment; when the refrigerant heat exchange system operates in the refrigerant cooling mode, the compressor 13 discharges heat to the outside, which is affected by the temperature of the compressor, and the temperature of the second adsorption part 22 is generally higher than the outdoor environment temperature, so that the heat is dissipated to the outdoor environment after the gaseous adsorption medium released by the second adsorption part 22 affected by the high-temperature heat flows into the second intermediate heat dissipation part 25, and at least part of the gaseous adsorption medium is condensed into liquid again.
Optionally, the first intermediate heat sink piece 24 and the second heat sink piece are parallel flow heat sinks.
In some embodiments, the first intermediate heat sink member 24 and the second intermediate heat sink member 25 are disposed on a back plate, a side plate, or a bottom plate of the outdoor unit of the refrigerant heat exchange system and are disposed away from the air outlet of the outdoor unit, so that the heat dissipation effect of the intermediate heat sink member can be prevented from being affected by high-temperature air discharged from the outdoor unit.
Preferably, the first intermediate heat sink member 24 and the second intermediate heat sink member 25 are disposed on the bottom plate, and in this arrangement, the outdoor unit can shield the two intermediate heat sink members from sunlight, so as to provide a more suitable heat dissipation temperature environment for the two intermediate heat sink members.
Or, because the back plate of the outdoor unit is provided with the air inlet, the first intermediate heat dissipation part 24 and the second intermediate heat dissipation part 25 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 intermediate heat dissipation part, thereby improving the heat dissipation effect.
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 first 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 first intermediate heat radiation part 24 and the evaporation part 23 are sequentially connected in series, so that the adsorption medium flows out of the first adsorption part 21 in the desorption cold storage stage, then sequentially enters the first intermediate heat radiation 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 first middle heat radiation 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 first intermediate heat radiation part 24, or may be provided in the flow path between the first 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 on the first adsorption flow path, and the check valve limits the adsorption medium to be transported only in the flow direction of "evaporation part 23 → first adsorption part 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 first intermediate heat sink 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 adsorbent media transport flow rate is configured between the second adsorbent section 22 and the evaporation section 23, and the adsorbent media can flow between the second adsorbent section 22, the second intermediate heat sink section 25 and the evaporation section 23 via a second adsorbent media transport flow path.
Here, the second adsorption medium delivery flow path includes a second desorption flow path which is a flow path for desorption cold storage stage adsorption medium delivery and a second adsorption flow path which is a flow rate for adsorption cold storage stage adsorption medium delivery.
Here, the second adsorption medium conveyance path may be arranged in a manner that refers to the first adsorption medium conveyance path in the previous embodiment, and will not be described herein.
In this embodiment, the adsorption refrigeration system further includes two control valves, wherein the first control valve 26 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 27 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, each control valve is provided on a non-parallel flow path section of the desorption flow path close to the corresponding adsorption section in the above embodiment, so that flow rate on-off control in two stages of desorption heat storage and adsorption cooling of the adsorption section can be realized by only one control valve.
Alternatively, a control valve may be provided in each of the desorption flow path and the adsorption flow path of each 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 part 21 and the second adsorption part 22, the adsorption media adsorbed by the adsorbents in the two adsorption parts absorb heat and desorb into a gaseous adsorption medium, and then the gaseous adsorption medium enters the corresponding intermediate heat dissipation part via the desorption flow path to be condensed, and the condensed liquid adsorption medium enters the evaporation part 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 stopped and do not release heat to the outside, 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 and the second adsorption part 22 through the respective adsorption flow paths, and in this process, the adsorption medium absorbs heat from the indoor environment and releases the heat to the outdoor environment where the adsorption part is located after the adsorption medium is adsorbed and re-adsorbed, therefore, the adsorption refrigeration and temperature reduction of the indoor environment can be realized by the flow of the adsorption medium in the reverse direction of the desorption cold accumulation stage.
Here, in the desorption cold storage mode and the adsorption refrigeration mode, only one of the first adsorption part 21 and the second adsorption part 22 or both 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 the temperature of an outdoor coil of an outdoor heat exchanger;
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 optional embodiments, the outdoor unit of the dual-refrigeration type air conditioner is provided with a temperature sensor, and the temperature sensor can be used for detecting the real-time temperature of a coil of the outdoor unit; the outdoor coil temperature can be detected by the temperature sensor in step S201.
S202, adjusting the flow of the adsorption medium flowing to the evaporation part from the first adsorption part according to the temperature of the outdoor coil of the outdoor heat exchanger.
Here, the first adsorption part is arranged close to the outdoor heat exchanger, so that the heat quantity transferred from the outdoor heat exchanger to the first adsorption part can directly influence the desorption rate of the adsorption medium in the first adsorption part, so that the first adsorption part can not only market the quantity of the adsorption medium delivered to the evaporation part by the first adsorption part, but also influence the speed of delivering the adsorption medium desorbed by the second adsorption part to the first adsorption part by the concentration of the adsorption medium desorbed in the first adsorption part; in the embodiment, the temperature of the outdoor coil is used as a measurement parameter for representing the heat which can be transferred to the first adsorption part by the outdoor heat exchanger, and the flow of the adsorption medium flowing to the evaporation part from the first adsorption part and the second adsorption part is adjusted according to the temperature of the outdoor coil, so that the adsorption refrigeration system can operate with better desorption cold accumulation efficiency.
Optionally, the first adsorption part is communicated with the evaporation part through a first adsorption medium delivery flow path, and a control valve for controlling the on-off state of the first adsorption medium delivery flow path is arranged on the first adsorption medium delivery flow path, so that the flow of the adsorption medium flowing from the first adsorption part to the evaporation part can be realized by controlling the flow opening of the control valve.
The control method for the double-refrigeration type air conditioner can adjust the flow state of the desorption cold accumulation mode according to the outdoor coil, 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 operation state of the adsorption refrigeration system can be adapted to the current working condition by adjusting the flow of the desorption cold accumulation mode according to the temperature of the outdoor coil 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.
In some optional embodiments, the control method for the dual refrigeration type air conditioner of the present disclosure further includes: before the dual cooling air conditioner operates in the first mode, it is determined that the outdoor coil temperature of the outdoor heat exchanger and the shell temperature of the compressor are greater than the outdoor ambient temperature on the outdoor side.
In this embodiment, the first adsorption part of the adsorption refrigeration system is disposed adjacent to the outdoor heat exchanger, so that the temperature of the outdoor coil of the outdoor heat exchanger can not only affect the rate of desorbing the adsorption medium in the first adsorption part, but also directly affect the temperature of the gaseous adsorption medium; similarly, because the second adsorption part is arranged close to the compressor, the temperature of the shell of the compressor can be directly influenced by the temperature of the gaseous adsorption medium in the second adsorption part. Here, the first intermediate heat dissipation portion corresponding to the first adsorption portion and the second intermediate heat dissipation portion corresponding to the second adsorption portion are both disposed outside the room, and heat exchange with the outside of the room is used to perform heat dissipation and condensation operations on the gaseous adsorption medium flowing through the first intermediate heat dissipation portion and the second adsorption portion, so to achieve condensation, the two intermediate heat dissipation portions are required to provide a lower condensation temperature environment than the first adsorption portion and the second adsorption portion, and the outdoor environment temperature is an external factor that can directly affect the temperature of the two intermediate heat dissipation portions.
Here, when the outdoor coil temperature of the outdoor heat exchanger is higher than the outdoor ambient temperature on the outdoor side, the temperature of the first adsorption part affected by the outdoor heat exchanger temperature is generally higher than the temperature of the first intermediate heat dissipation part affected by the outdoor ambient temperature, and therefore the first intermediate heat dissipation part can perform the function of heat dissipation and condensation; similarly, when the casing temperature of the compressor is higher than the outdoor ambient temperature on the outdoor side, the temperature of the second adsorption part affected by the temperature of the compressor is generally higher than the temperature of the second intermediate heat dissipation part affected by the outdoor ambient temperature, and therefore the second intermediate heat dissipation part can perform the functions of heat dissipation and condensation.
In this embodiment, in the first mode of operation of the dual refrigeration type air conditioner, the adsorption refrigeration system starts the first adsorption part and the second adsorption part simultaneously to perform desorption and cold storage, and it is necessary to simultaneously satisfy the temperature requirements that the outdoor coil temperature of the outdoor heat exchanger and the shell temperature of the compressor are greater than the outdoor ambient temperature at the outdoor side.
Optionally, when only the first adsorption part is used for desorption and cold storage, the temperature requirement that the temperature of an outdoor coil of the outdoor heat exchanger is higher than the outdoor environment temperature at the outdoor side is only required to be met; alternatively, when only the second adsorption part is used for desorption and cold accumulation, the temperature requirement that the shell temperature of the compressor is higher than the outdoor environment temperature on the outdoor side is also only required to be met.
In some optional embodiments, the outdoor unit of the dual refrigeration type air conditioner is further provided with two temperature sensors, wherein one temperature sensor is arranged on the body of the compressor and can be used for detecting the real-time temperature of the shell of the compressor; the other temperature sensor is arranged on the outer wall of the outdoor unit and close to the first middle heat dissipation part and the second middle heat dissipation part, and can be used for detecting the real-time temperature of the outdoor environment where the two middle heat dissipation parts are located. Therefore, the outdoor environment temperature for comparing the temperature level and the shell temperature of the compressor in the present embodiment can be detected by the two temperature sensors.
In some optional embodiments, the adjusting the flow rate of the adsorption medium flowing from the first adsorption part to the evaporation part according to the outdoor coil temperature of the outdoor heat exchanger in step S202 includes: calculating the temperature difference between the outdoor coil temperature and the desorption critical temperature; and adjusting the flow of the adsorption medium flowing from the first adsorption part to the evaporation part according to the temperature difference.
Here, the desorption critical temperature is a temperature required for the adsorption medium to desorb the adsorbent adsorbing it. When the temperature of the environment where the adsorbent is located is greater than or equal to the desorption critical temperature, the adsorption medium can begin to be separated from the adsorbent, and desorption is realized; when the temperature of the environment in which the adsorbent is located is less than the desorption critical temperature, the adsorbent medium cannot be desorbed from the adsorbent or only a small amount can be "desorbed".
In the present embodiment, there is a difference in the temperature required for different adsorbents and their complexed adsorbents to achieve desorption, and therefore the desorption critical temperature is predetermined according to the types of the adsorbents and their adsorption media.
Thus, in the embodiment, since the temperature of the environment in which the adsorbent in the first adsorption part is located is directly influenced by the temperature of the outdoor coil, the magnitude of the temperature difference between the outdoor coil temperature and the desorption critical temperature can directly reflect the desorption rate of the adsorption medium in the first adsorption part; according to the embodiment of the disclosure, the flow of the adsorption medium flowing from the first adsorption part to the evaporation part is adjusted according to the temperature of the outdoor coil, so that the actual flow of the adsorption medium conveying flow path can adapt to the current capacity of desorption cold accumulation.
Optionally, according to the temperature difference, adjusting the flow rate of the adsorption medium flowing from the first adsorption part to the evaporation part includes: and searching the corresponding flow of the adsorption medium from a preset first association relation according to the temperature difference.
Wherein, the first correlation relationship comprises the corresponding relationship between one or more temperature differences and the flow rate of the adsorption medium, for example, when the temperature difference is Δ T1, the flow rate of the adsorption medium corresponding to the temperature difference is q 1; and when the temperature difference is delta T2, the corresponding flow rate of the adsorption medium is q2, and the like.
The first correlation relates a flow rate of the adsorbent media to a temperature differential. Here, in the process of operating the desorption cold storage mode of the adsorption refrigeration system, the outdoor ambient temperature generally does not change greatly, so the heat dissipation amount of the intermediate heat dissipation portion affected by the outdoor ambient temperature is also approximately unchanged, when the amount of the gaseous adsorption medium delivered to the intermediate heat dissipation portion exceeds the amount of the adsorption medium corresponding to the maximum heat dissipation amount, part of the gaseous adsorption medium may enter the evaporation portion due to insufficient heat dissipation, and further, problems such as excessive gaseous adsorption medium in the evaporation portion, excessive temperature in the evaporation portion, and too little cold storage amount may be caused.
Therefore, in this embodiment, the larger the temperature difference is, the more the adsorption media are generated by desorption, the more the heat absorbed by the gaseous adsorption media per unit volume is, and therefore, the more the heat dissipation amount of the middle heat dissipation portion is occupied, and therefore, the flow rate of the adsorption media corresponding to the adsorption media is adjusted to a smaller value, so as to reduce the amount of the gaseous adsorption media flowing to the middle heat dissipation portion, and enable the gaseous adsorption media flowing into the middle heat dissipation portion to perform better heat dissipation.
In some optional embodiments, the control method for the dual refrigeration type air conditioner of the present disclosure further includes: and adjusting the refrigerating power of the refrigerant refrigerating mode according to the temperature difference between the outdoor coil temperature and the desorption critical temperature of the outdoor heat exchanger.
Here, the magnitude of the temperature difference between the outdoor coil temperature and the desorption critical temperature can directly reflect the desorption rate of the adsorption medium in the first adsorption part; therefore, in order to meet one of the technical purposes, the gaseous adsorption medium can fully dissipate heat at the middle heat dissipation part, and the heat dissipation amount of the outdoor heat exchanger can be changed by adjusting the refrigeration power of the refrigerant refrigeration mode of the refrigerant heat exchange system, so that the desorption rate of the adsorption medium in the first adsorption part can be adjusted.
Optionally, the adjusting the refrigeration power of the refrigerant refrigeration mode according to the temperature difference between the outdoor coil temperature of the outdoor heat exchanger and the desorption critical temperature includes: when the temperature difference value is larger than or equal to a preset temperature difference threshold value, controlling a refrigerant refrigeration mode to run at a first refrigeration power; and when the temperature difference value is smaller than a preset temperature difference threshold value, controlling the refrigerant refrigeration mode to operate at a second refrigeration power.
Wherein the first cooling power is smaller than the second cooling power. Under the condition that the temperature difference value is greater than or equal to the preset temperature difference threshold value, the refrigerant refrigeration mode is controlled to operate at the first refrigeration power with a smaller value, so that the outdoor heat exchanger generates less heat dissipation capacity, the desorption rate of the adsorption medium is reduced, and the gaseous adsorption medium can fully dissipate heat at the middle heat dissipation part; and under the condition that the temperature difference value is smaller than the preset temperature difference threshold value, the refrigerant refrigeration mode is controlled to operate at the second refrigeration power with a larger value, so that the heat dissipation capacity of the outdoor heat exchanger can be effectively improved, and the desorption rate of the first adsorption part is ensured.
Optionally, the adjustment of the refrigeration power of the refrigerant refrigeration mode may be implemented by changing an operation frequency of the compressor, for example, when it is determined that the refrigerant refrigeration mode is operated with the first refrigeration power, the compressor is controlled to operate with the first frequency; and when the refrigerant refrigerating mode is determined to be operated at the second refrigerating power, the compressor is controlled to operate at a second frequency, wherein the first frequency is smaller than the second frequency.
It should be understood that other prior art methods for adjusting the cooling capacity may be used for control, and the present application is not limited thereto.
In some optional embodiments, the control method for the dual refrigeration type air conditioner of the present disclosure further includes: and when the adsorption refrigeration system meets the preset cold accumulation completion condition, the desorption cold accumulation mode is controlled to exit.
Optionally, the cold storage completion condition includes: the adsorption medium quantity of the evaporation part is greater than or equal to a first medium quantity threshold value; still alternatively, the cold storage completion condition includes: the adsorption medium quantity of the first adsorption part is less than or equal to a second medium quantity threshold value; still alternatively, the amount of the adsorbing medium in the second adsorbing portion is less than or equal to the third medium amount threshold.
The plurality of optional cold accumulation completion conditions are determined based on a change in the amount of the adsorption medium in the evaporation unit or the two adsorption units. In the desorption cold accumulation mode, the adsorption media in the first adsorption part and the second adsorption part flow to the evaporation part, so that when the quantity of the adsorption media in the evaporation part exceeds a first medium quantity threshold value, the quantity of the liquid adsorption media accumulated in the evaporation part is large, the cold accumulation quantity is sufficient, and the desorption cold accumulation mode can be controlled to exit; similarly, when the amount of the adsorption medium in the first adsorption part is lower than the second medium amount threshold value, or the amount of the adsorption medium in the second adsorption part is lower than the second medium amount threshold value, it means that the amount of the adsorption medium adsorbed and stored in the first adsorption part or the second adsorption part is small, and therefore, the desorption cold storage mode can be controlled to exit.
Alternatively, the first media amount threshold is 80%, 90%, etc. of the total amount of adsorbent media.
The second media amount threshold is 10%, 15%, etc. of the total amount of adsorbent media.
The third media amount threshold is 10%, 15%, etc. of the total amount of adsorbent media.
In some optional embodiments, the steps of the control method for the dual refrigeration type air conditioner of the present disclosure further include: when the double-refrigeration type air conditioner operates in a first mode, controlling an outdoor fan to operate at a first rotating speed; and when the adsorption refrigeration system exits the desorption cold accumulation mode, the outdoor fan is controlled to operate at a second rotating speed.
In the present embodiment, the first rotational speed is smaller than the second rotational speed. In the first mode, the desorption cold accumulation mode of the adsorption refrigeration system mainly uses the heat of the outdoor heat exchanger of the refrigerant heat exchange system to desorb the adsorption medium of the adsorption part, so that the outdoor fan is controlled to operate at a first rotation speed with a smaller value, the heat radiation of the outdoor fan driving heat to the outdoor environment can be reduced, and the heat can be concentrated in the surrounding environment of the adsorption part to improve the desorption rate; and when the adsorption refrigeration system exits the desorption cold accumulation mode, the outdoor fan is controlled to operate at a second rotating speed with a larger numerical value so as to improve the heat dissipation effect of the outdoor heat exchanger and further improve the refrigeration effect of the refrigerant heat exchange system. The double-refrigeration type air conditioner flexibly adjusts the rotating speed of the outdoor fan according to the starting and stopping states of the desorption cold accumulation mode of the adsorption refrigeration system, so that the desorption effect can be improved, and the refrigeration effect of the refrigerant heat exchange system can be improved.
Illustratively, when the double-refrigeration type air conditioner operates in a first mode, the first rotating speed of the outdoor fan is 400 r/min; and when the adsorption refrigeration system exits the desorption cold accumulation mode, the second rotating speed of the outdoor fan is 600 r/min.
In some optional embodiments, after controlling the adsorption refrigeration system to exit the desorption cold storage mode, if a triggering condition of the adsorption refrigeration mode is satisfied, controlling the adsorption refrigeration system to enter the adsorption refrigeration mode.
In this way, the indoor environment can be refrigerated by using the 'cold energy' accumulated in the desorption cold accumulation stage of the adsorption refrigeration system, and the heat quantity is transferred from the indoor side to the outdoor side by using the adsorbent to adsorb the adsorption medium in the adsorption refrigeration stage, so that energy consumption is not needed. Through the combination of two refrigeration modes of adsorption refrigeration and refrigerant refrigeration, the power consumption required for maintaining the indoor environment temperature in the range comfortable for users can be effectively reduced, and the use cost of the double-refrigeration type air conditioner is reduced.
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 which are respectively arranged at an outdoor heat exchanger and a compressor of the refrigerant heat exchange system, and the evaporation part is respectively communicated with the first adsorption part and the second adsorption part;
the control method comprises the following steps:
when the double-refrigeration type air conditioner operates in a first mode, acquiring the temperature of an outdoor coil of the outdoor heat exchanger; 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 adjusting the flow of the adsorption medium flowing to the evaporation part from the first adsorption part according to the temperature of an outdoor coil of the outdoor heat exchanger.
2. The control method of claim 1, further comprising, prior to the first mode of operation of the dual refrigeration air conditioner:
determining that an outdoor coil temperature of the outdoor heat exchanger and a shell temperature of the compressor are greater than an outdoor ambient temperature of an outdoor side.
3. The control method of claim 1, wherein the adjusting the flow rate of the adsorption medium flowing to the evaporation part from the first adsorption part according to the outdoor coil temperature of the outdoor heat exchanger comprises:
calculating a temperature difference between the outdoor coil temperature and a desorption critical temperature;
and adjusting the flow rate of the adsorption medium flowing to the evaporation part from the first adsorption part according to the temperature difference.
4. The control method according to claim 3, wherein the adjusting of the flow rate of the adsorption medium flowing to the evaporation part from the first adsorption part according to the temperature difference comprises:
according to the temperature difference, searching the corresponding flow of the adsorption medium from a preset first incidence relation; wherein the first correlation relates a negative correlation between the flow rate of the adsorbent media and the temperature difference.
5. The control method according to claim 1, characterized by further comprising:
and adjusting the refrigerating power of the refrigerant refrigerating mode according to the temperature difference between the outdoor coil temperature of the outdoor heat exchanger and the desorption critical temperature.
6. The control method as claimed in claim 5, wherein adjusting the cooling power of the refrigerant cooling mode according to the temperature difference between the outdoor coil temperature and the desorption critical temperature of the outdoor heat exchanger comprises:
when the temperature difference value is larger than or equal to a preset temperature difference threshold value, controlling the refrigerant refrigeration mode to operate at a first refrigeration power;
when the temperature difference value is smaller than the preset temperature difference threshold value, controlling the refrigerant refrigeration mode to operate at a second refrigeration power;
wherein the first cooling power is smaller than the second cooling power.
7. The control method according to claim 1, characterized by further comprising:
and when the adsorption refrigeration system meets the preset cold accumulation completion condition, the desorption cold accumulation mode is controlled to exit.
8. The control method according to claim 7, characterized in that the cold storage completion condition includes:
the adsorption medium quantity of the evaporation part is greater than or equal to a first medium quantity threshold value; or,
the adsorption medium quantity of the first adsorption part is less than or equal to a second medium quantity threshold value; or,
the amount of the adsorbing medium in the second adsorbing portion is less than or equal to the third medium amount threshold.
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 which are respectively arranged at an outdoor heat exchanger and a compressor of the refrigerant heat exchange system, and the evaporation part is respectively communicated with the first adsorption part and the second adsorption part;
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 which can be switched on and off is constructed between the second adsorption part and the evaporation part;
the control device for the dual cooling type air conditioner as claimed in claim 9.
CN202011092807.4A 2020-10-13 2020-10-13 Control method and control device for double-refrigeration type air conditioner and double-refrigeration type air conditioner Pending CN112393402A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116221926A (en) * 2021-12-06 2023-06-06 青岛海尔空调器有限总公司 Method and device for controlling air conditioner, air conditioner and storage medium

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116221926A (en) * 2021-12-06 2023-06-06 青岛海尔空调器有限总公司 Method and device for controlling air conditioner, air conditioner and storage medium
CN116221926B (en) * 2021-12-06 2024-01-16 青岛海尔空调器有限总公司 Method and device for controlling air conditioner, air conditioner and storage medium

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