CN112393400A - 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 PDFInfo
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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
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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
- F24F11/64—Electronic processing using pre-stored data
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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
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- 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
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- 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
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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
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
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 an evaporation part temperature set of an adsorption refrigeration system group; wherein the first mode includes: the refrigerant heat exchange system is in a refrigerant refrigeration mode, and the adsorption refrigeration system set is in a desorption cold accumulation mode; the evaporator temperature set comprises a first temperature of the evaporator of each adsorption refrigeration system; and controlling the operation state of the desorption cold accumulation mode of one or more adsorption refrigeration systems in the adsorption refrigeration system group according to the temperature set of the evaporation part of the adsorption refrigeration system group. The temperature change of the evaporation part in the control method of the embodiment can reflect the running state of the adsorption refrigeration system set, and the desorption cold accumulation mode is adjusted accordingly, so that the accurate control of the desorption cold accumulation process can be realized when the refrigerant heat exchange system performs refrigeration. The application also discloses a control device for the double-refrigeration type air conditioner and the double-refrigeration type air conditioner.
Description
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 an evaporation part temperature set of an adsorption refrigeration system group; wherein the first mode includes: the refrigerant heat exchange system is in a refrigerant refrigeration mode, and the adsorption refrigeration system set is in a desorption cold accumulation mode; the evaporator temperature set comprises a first temperature of the evaporator of each adsorption refrigeration system;
and controlling the operation state of the desorption cold accumulation mode of one or more adsorption refrigeration systems in the adsorption refrigeration system group according to the temperature set of the evaporation part of the adsorption refrigeration system group.
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;
an adsorption refrigeration system group consisting of 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 adsorption part is arranged at an outdoor heat exchanger of the refrigerant heat exchange system, and an adsorption medium conveying flow path is constructed between the 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 be used for controlling the operation state of a desorption cold accumulation mode of the adsorption refrigeration system according to the temperature of each evaporation part of the adsorption refrigeration system group, wherein the heat source for desorption cold accumulation of the adsorption refrigeration system is the heat discharged by an outdoor heat exchanger when the refrigerant heat exchange system is used for refrigeration, the operation state of the adsorption refrigeration system group can be reflected through the temperature change of the evaporation parts, and the desorption cold accumulation mode can be adjusted to realize the accurate control of the desorption cold accumulation process when the refrigerant heat exchange system is used for refrigeration; therefore, 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 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 an embodiment, the operation modes of the refrigerant heat exchange system of the dual-refrigeration type air conditioner comprise a refrigerant refrigeration mode, a refrigerant dehumidification mode, a refrigerant heating mode and the like, wherein the refrigerant refrigeration mode is generally applied to a high-temperature working condition in summer and used for reducing the indoor environment temperature; the refrigerant dehumidification mode is also generally used for the high-temperature and high-humidity working condition in summer and is used for reducing the indoor environment humidity; the refrigerant 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 refrigerant 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 difference is that the temperature and 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 refrigerant 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, thereby achieving the purpose of reducing the humidity of the indoor air.
The refrigerant flow direction set during the operation of the refrigerant heating mode indicates that a 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 an adsorption part 21 and an evaporation part 22, wherein the 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 in a desorption cold storage stage and then releasing an adsorption medium, and for adsorbing the adsorption medium and releasing heat in an adsorption refrigeration stage; the evaporation part 22 is disposed at the indoor side, and is used for storing the liquid adsorption medium from the adsorption part 21 in the desorption cold accumulation stage, and absorbing heat from the indoor environment in the adsorption refrigeration stage and delivering the vaporized adsorption medium to the adsorption part 21.
In some embodiments, the 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 adsorption part 21 sandwiched between the outdoor fan and the outdoor heat exchanger 12, so that the adsorption part 21 can absorb a large amount of heat for desorption cold accumulation in the desorption cold accumulation stage; meanwhile, the adsorption part 21 is also positioned at the air inlet side of the outdoor fan, so that the heat released by the 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 adsorption part 21 and the outdoor heat exchanger 12, in this embodiment, the overall shape of the adsorption part 21 is adapted to the outdoor heat exchanger 12, and is also designed to be in a form of half-encircling the outdoor fan, and the adsorption part is attached to the outdoor heat exchanger 12, so that the heat exchange area between the 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 adsorption portions 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 deviation of the adsorption portions 21 of the individual adsorption refrigeration systems from the outdoor heat exchanger 12, the adsorption portions 21 of the plurality of adsorption refrigeration systems of the adsorption refrigeration system group are arranged side by side, optionally, the adsorption portions 21 of the plurality of adsorption refrigeration systems are arranged side by side in the transverse direction or the longitudinal direction of the outdoor heat exchanger 12, and the adsorption portions 21 are designed into shapes matched with the positions of the corresponding outdoor heat exchangers 12, so as to ensure the heat exchange efficiency of the adsorption refrigeration system group and the outdoor heat exchanger 12.
Alternatively, an adsorption medium transfer flow path is also formed between adjacent adsorption sections 21; in this way, in the desorption cold accumulation and adsorption cold accumulation stages, the gaseous adsorption medium can flow among the plurality of adsorption portions 21, thereby improving the desorption cold accumulation effect and the adsorption refrigeration effect of the adsorption refrigeration system set as a whole.
Optionally, the evaporation part 22 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 22 and the indoor environment in the desorption cold storage stage, and enhance the heat absorption and refrigeration capacity; meanwhile, a flow path through which the adsorbent flows is formed inside the evaporation unit 22, and the flow path of 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 22 and the indoor environment, in this embodiment, the overall shape of the evaporation portion 22 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 22 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 22 of the plurality of adsorption refrigeration systems to uniformly absorb heat from the indoor environment, the evaporation units 22 of the plurality of adsorption refrigeration systems are also arranged side by side; alternatively, the evaporation parts 22 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 22 are designed to be matched with the parts of the indoor heat exchangers 11 corresponding to the evaporation parts.
Alternatively, an adsorption medium transfer flow path is also configured between adjacent evaporation portions 22; 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 22, thereby improving the desorption cold accumulation effect and the adsorption refrigeration effect of the adsorption refrigeration system set as a whole.
In addition, the adsorption refrigeration system further includes an intermediate heat dissipation portion 23; the middle heat dissipation part 23 is disposed on the adsorption medium conveying flow path, and is configured to receive the gaseous adsorption medium conveyed by the adsorption part 21 in the desorption cold storage stage, dissipate heat and condense the gaseous adsorption medium, so as to liquefy at least a portion of the gaseous adsorption medium, and continuously convey the liquefied adsorption medium to the evaporation part 22 for storage.
Here, the intermediate heat radiating portion 23 is 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 outdoor heat exchanger 12 discharges heat to the outside, and the temperature of the adsorption portion 21 is generally higher than the outdoor environment temperature, so that the gaseous adsorption medium released by the adsorption portion 21 affected by the high-temperature heat flows into the intermediate heat dissipation portion 23, and the heat is dissipated to the outdoor environment, so that at least part of the gaseous adsorption medium is condensed into liquid again.
Optionally, the intermediate heat dissipation portion 23 is a horizontal flow type heat sink.
In some embodiments, the intermediate heat dissipation part 23 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 23.
Preferably, the intermediate heat dissipation part 23 is disposed at a bottom plate, and in this arrangement, the outdoor unit can shield the intermediate heat dissipation part 23 from sunlight, so as to provide a more suitable heat dissipation temperature environment for the intermediate heat dissipation part 23.
Or, because the back plate of the outdoor unit is provided with the air inlet, the middle heat dissipation part 23 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 23, and the heat dissipation effect is improved.
In the present embodiment, an adsorption medium transport flow path is configured between the adsorption part 21 and the evaporation part 22, and the adsorption medium can flow between the adsorption part 21, the intermediate heat dissipation part 23, and the evaporation part 22 through the adsorption medium transport flow path.
Here, the adsorption medium delivery flow path includes a desorption flow path and an adsorption flow path, wherein the desorption flow path is a flow path for the adsorption cold storage stage adsorption medium delivery, and the adsorption flow path is a flow rate for the adsorption cold storage stage adsorption medium delivery.
In the desorption flow path, the adsorption portion 21, the intermediate heat dissipation portion 23, and the evaporation portion 22 are connected in series in this order, so that the adsorption medium flows out of the adsorption portion 21 in the desorption cold storage stage, then sequentially enters the intermediate heat dissipation portion 23 and the evaporation portion 22, and finally is stored in the evaporation portion 22 in a liquid state.
Optionally, a one-way valve is arranged on the desorption flow path, and the one-way valve limits that the adsorption medium can be conveyed only according to the flow direction of the adsorption part 21 → the middle heat dissipation part 23 → the evaporation part 22; here, the check valve may be provided in the flow path between the adsorption part 21 and the intermediate heat dissipation part 23, or may be provided in the flow path between the intermediate heat dissipation part 23 and the evaporation part 22.
In the adsorption flow path, the evaporation unit 22 and the adsorption unit 21 are connected in series, so that the adsorption medium flows out of the evaporation unit 22 in the adsorption refrigeration stage, then enters the adsorption unit 21 through the adsorption flow path, and is adsorbed again by the adsorbent in the adsorption unit 21.
Optionally, a check valve is disposed on the adsorption flow path, and the check valve limits the adsorption medium to be transported only in the flow direction of "evaporation portion 22 → adsorption portion 21".
Alternatively, the desorption flow path is set as the main flow path, and the adsorption flow path is set in parallel with the intermediate heat dissipation portion 23, so that the non-parallel flow path section of the desorption flow path close to the adsorption portion 21 can also be used for conveying the adsorption medium in the adsorption refrigeration stage.
In this embodiment, the adsorption refrigeration system further includes a control valve 24 disposed on the adsorption medium transport flow path for controlling the on-off state and flow rate of the adsorption medium transport flow path. Here, the control valve 24 is provided in the non-parallel flow path section of the desorption flow path near the adsorption section 21 in the above embodiment, so that the flow rate on-off control in two stages of desorption cold accumulation and adsorption refrigeration can be realized by only the single control valve 24.
Alternatively, a control valve 24 may be disposed on each of the desorption flow path and the adsorption flow path, so that the on-off state and the flow rate of the corresponding flow path are controlled by the respective control valves 24.
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 exterior heat exchanger 12 releases heat, the heat is transferred to the adsorption portion 21, the adsorption medium adsorbed by the adsorbent in the adsorption portion 21 absorbs heat and is desorbed into a gaseous adsorption medium, and then the gaseous adsorption medium enters the intermediate heat-radiating portion 23 through the desorption flow path to be condensed, and the condensed liquid adsorption medium enters the evaporation portion 22 as "cold" accumulated 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 operated in the refrigerant cooling mode or the refrigerant dehumidification mode, the exterior heat exchanger 12 is not operated and does not radiate heat to the outside, so that the temperature of the adsorption part 21 is lower than that when the exterior heat exchanger 12 radiates heat, so that the adsorbent in the adsorption part 21 starts to adsorb the adsorption medium again, the liquid adsorption medium in the evaporation part 22 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 environment temperature of the adsorption medium, and is returned to the adsorption part 21 through the adsorption flow path, in which process the adsorption medium absorbs heat from the indoor environment, and releases the heat to the outdoor environment where the adsorption part 21 is located after the adsorption medium is re-adsorbed by the adsorbent, 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.
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 temperature set of an evaporation part of an adsorption refrigeration system group;
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.
Controlling the adsorption refrigeration system to enter a desorption cold accumulation mode while the refrigerant heat exchange system operates a refrigerant refrigeration mode; the outdoor heat exchanger discharges heat, so that the ambient temperature of the outdoor heat exchanger rises, the adsorption medium in the adsorption part of the adsorption refrigeration system arranged close to the outdoor heat exchanger absorbs the heat and then is separated from the adsorbent, desorption is realized, the desorbed adsorption medium flows to the middle heat exchange part along the adsorption medium conveying flow path, the temperature of the middle heat exchange part is lower than that of the outdoor heat exchanger, and therefore the adsorption medium releases heat and condenses and continues to flow into the evaporation part on the indoor side along the adsorption medium 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 this embodiment, the evaporator temperature set includes a first temperature of the evaporator of each adsorption refrigeration system.
Alternatively, the first temperature of the evaporation portion may be an external casing temperature of the evaporation portion, or may be a temperature of the adsorption medium in the evaporation portion.
Here, the adsorption refrigeration system set includes one or more independent adsorption refrigeration systems, and each adsorption refrigeration system is provided with a temperature sensor at the outer casing of the evaporation part, and the temperature sensor can be used for detecting the real-time temperature of the outer casing of the evaporation part, so that the first temperature of the evaporation part can be the temperature data detected by the temperature sensor. Further alternatively, another temperature sensor may be provided inside the evaporation unit, and the temperature sensor may be configured to detect a real-time temperature of the adsorption medium inside the evaporation unit, and therefore, the acquisition of the first temperature of the evaporation unit may be temperature data detected by the temperature sensor.
For example, a certain adsorption refrigeration system group includes A, B, C and D four adsorption refrigeration systems, in step S201, the first temperatures of the evaporation parts of the four adsorption refrigeration systems are respectively detected, and the evaporation part temperature sets are obtained in a summary manner, in this embodiment, the evaporation part temperature sets include TA、TB、TCAnd TDData of the first temperatures of the four evaporation sections.
In this embodiment, the first temperatures of the evaporation portions of different adsorption refrigeration system groups are temperature data corresponding to the same time point, so that the control accuracy can be ensured.
S202, controlling the operation state of the desorption cold accumulation mode of one or more adsorption refrigeration systems in the adsorption refrigeration system group according to the temperature set of the evaporation part of the adsorption refrigeration system group.
In some optional embodiments, the controlling the operation state of the desorption cold storage mode of one or more refrigeration systems in the adsorption refrigeration system group according to the temperature set of the evaporation part of the adsorption refrigeration system group in step S202 includes: the control reduces or blocks the adsorption medium delivery flow of the first adsorption refrigeration system.
Here, among them, the first adsorption refrigeration system is an adsorption refrigeration system satisfying the first temperature condition in the adsorption refrigeration system group.
Optionally, the first temperature condition is that the first temperature of the evaporation portion is greater than or equal to a first set temperature threshold.
Here, since the amount of the adsorption medium in the evaporation unit gradually increases and the pressure thereof increases during the desorption cold storage mode and the temperature of the evaporation unit gradually increases from a lower temperature starting point due to the influence of the heat remaining after the adsorption medium is condensed in the intermediate heat radiation unit, the change of the amount of the adsorption medium stored in the evaporation unit can be obtained by determining the first temperature change of the evaporation unit, and it is determined whether or not the adsorption refrigeration system to which the evaporation unit belongs has accumulated sufficient "cold" and whether or not the desorption cold storage is completed.
The first set temperature threshold is a critical temperature value obtained through experimental measurement and calculation in advance and is used for representing a critical value of the refrigerating capacity of the adsorption refrigerating system. When the first temperature of the evaporation part is greater than or equal to the first set temperature threshold value, the liquid adsorption medium in the evaporation part of the adsorption refrigeration system is enough, the refrigeration capacity is high, and a good refrigeration effect on the indoor environment can be realized, so that the desorption cold accumulation mode can be controlled to exit; on the contrary, the liquid adsorption medium in the evaporation part of the adsorption refrigeration system is less, the refrigeration capacity is lower, and the continuous desorption cold accumulation mode operation is still needed to continuously accumulate the cold energy; thus, the temperature of the evaporation part is judged, so that the desorption cold accumulation mode of the adsorption refrigeration system can be accurately controlled.
Optionally, a control valve is arranged on the adsorption medium conveying flow path of each adsorption refrigeration system, and the control valve can be used for adjusting the on-off state and flow rate of the adsorption medium conveying flow path where the control valve is located; therefore, in the embodiment, when the control to reduce the conveying flow rate of the adsorption medium of the first adsorption refrigeration system is needed, the control can be realized by reducing the flow opening degree of the control valve of the first adsorption refrigeration system; when the control is needed to block the conveying flow of the adsorption medium of the first adsorption refrigeration system, the control can be realized by closing the control valve of the first adsorption system.
In some optional embodiments, the controlling the operation state of the desorption cold storage mode of one or more refrigeration systems in the adsorption refrigeration system group according to the temperature set of the evaporation part of the adsorption refrigeration system group in step S202 includes: and controlling and increasing the conveying flow of the adsorption medium of the second adsorption refrigeration system.
In this embodiment, the second adsorption refrigeration system is an adsorption refrigeration system in the adsorption refrigeration system group that does not satisfy the first temperature condition.
Optionally, in this embodiment, when it is necessary to control and increase the transport flow rate of the adsorption medium of the first adsorption refrigeration system, the flow rate may be increased by adjusting the flow opening of the control valve of the first adsorption refrigeration system.
In some optional embodiments, the controlling the operation state of the desorption cold storage mode of one or more refrigeration systems in the adsorption refrigeration system group according to the temperature set of the evaporation part of the adsorption refrigeration system group in step S202 includes: and when one of the adsorption refrigeration systems of the adsorption refrigeration system set meets a second temperature condition, controlling the adsorption refrigeration system set to exit the desorption cold storage mode.
Optionally, the second temperature condition includes that the first temperature of the evaporation portion is less than or equal to a third set temperature threshold.
Here, the second temperature condition is a temperature parameter for characterizing that the adsorption refrigeration system has a trouble; when the adsorption refrigeration system has a fault (for example, the pipeline is blocked by solid adsorbent powder), the adsorption medium cannot normally enter the evaporation part, so that the influence on the slow temperature rise of the evaporation part due to the increase of the liquid adsorption medium cannot normally occur, and therefore, compared with other adsorption refrigeration systems which normally operate, the first temperature of the evaporation part of the adsorption refrigeration system with the fault problem is obviously lower, the second set temperature in the embodiment is a temperature value which is slightly higher than the initial temperature of the evaporation part at the beginning of the desorption cold storage mode, and therefore, when the first temperature of the evaporation part of a certain adsorption refrigeration system is smaller than or equal to the third set temperature threshold, the fault problem can be determined to occur.
Therefore, by judging the conditions of the first temperature and the second temperature of the evaporation part in the desorption cold storage mode operation process, the adsorption refrigeration system set can be controlled to exit the desorption cold storage mode under the condition that the adsorption refrigeration system has a fault, a fault alarm is sent to a user, the user is reminded to carry out fault maintenance in time, and the safe and stable operation of the adsorption refrigeration system set of the double-refrigeration type air conditioner is guaranteed.
In some optional embodiments, the operation state of the refrigerant heat exchange system is controlled according to the temperature set of the evaporation part of the adsorption refrigeration system group. In the embodiment of the disclosure, because the heat source for desorption by the adsorption part of the adsorption refrigeration system is the outdoor heat exchanger, the temperature change of the evaporation part can reflect whether the heat supply from the outdoor heat exchanger to the adsorption refrigeration system group is too low or too excessive. Under the conditions that the temperature of the evaporation part is higher and the temperature change is quicker, the absorption refrigeration system group obtains more heat dissipation capacity from the outdoor heat exchanger; on the other hand, when the temperature of the evaporation portion is high and the temperature change is slow, it is described that the amount of heat radiation obtained from the outdoor heat exchanger of the adsorption refrigeration system is small. Therefore, the operating state of the refrigerant heat exchange system can be adjusted by judging the temperature set of the evaporation part of the adsorption refrigeration system so as to change the heat dissipation capacity of the outdoor heat exchanger, thereby ensuring the efficient operation of each adsorption refrigeration system in the adsorption refrigeration system group.
Optionally, the operation state of the refrigerant heat exchange system is controlled according to the temperature set of the evaporation part of the adsorption refrigeration system group, and the operation state comprises the following steps: acquiring the minimum value of the first temperature in the evaporation part temperature set; and controlling and adjusting the heat dissipation capacity of an outdoor heat exchanger of the refrigerant heat exchange system according to the temperature difference value between the minimum value of the first temperature and the second set temperature threshold value.
In the present embodiment, the adsorption refrigeration system corresponding to the minimum value of the first temperature concentrated by the temperature of the evaporation portion is the one with the least heat dissipation amount obtained from the outdoor heat exchanger, so that the desorption cold accumulation effect is also the lowest. Therefore, in the embodiment, according to the temperature state of the adsorption refrigeration system with the lowest desorption cold accumulation effect, the heat dissipation capacity of the outdoor heat exchanger of the refrigerant heat exchange system is adjusted, so that the desorption cold accumulation state of the adsorption refrigeration system is improved, and the cold accumulation effect is improved.
In the embodiment, the second set temperature threshold is a temperature parameter for representing the normal operation of the desorption cold accumulation mode of the adsorption refrigeration system; therefore, under the condition that the minimum value of the first temperature is smaller than the second set temperature threshold, the desorption cold accumulation state of the adsorption refrigeration system is poor, and therefore the heat dissipation capacity of the outdoor heat exchanger needs to be adjusted; when the minimum value of the first temperature is equal to or greater than the second set temperature threshold value, the desorption cold accumulation state of the adsorption refrigeration system is better, so that the heat dissipation capacity of the outdoor heat exchanger does not need to be adjusted.
Here, the temperature difference and the heat dissipation amount of the outdoor heat exchanger are in a positive correlation relationship, that is, the larger the temperature difference between the minimum value of the first temperature and the second set temperature threshold is, the worse the desorption cold storage effect of the adsorption refrigeration system is, the more the heat dissipation amount required for improving the cold storage state is, and therefore, the heat dissipation amount of the outdoor heat exchanger needs to be increased.
Optionally, the controlling and increasing the heat dissipation capacity of the outdoor heat exchanger includes: the running frequency of a compressor of the refrigerant heat exchange system is improved, or the flow opening of a throttling device of the refrigerant circulating system is reduced.
In the embodiment, by improving the operating frequency of the compressor of the refrigerant heat exchange system, the discharge high-temperature refrigerant quantity of the compressor can be increased, and the temperature and the pressure of the discharged refrigerant can be effectively improved; in the refrigerant refrigeration mode, the high-temperature and high-pressure refrigerant discharged by the compressor flows to the outdoor heat exchanger for heat dissipation, so that the temperature of the outdoor heat exchanger can be increased in the heat exchange process by increasing the operating frequency of the compressor, the temperature difference between the first temperature and the second temperature threshold of the evaporation part can be reduced, the speed of heat flowing from the outdoor heat exchanger to the adsorption part is further increased, and the speed of promoting the desorption of the adsorption medium can be achieved. In addition, considering that the residual heat is still left after the adsorption medium is condensed, the liquid adsorption medium flowing into the evaporation part of the adsorption refrigeration system at the indoor side may have an adverse effect on the indoor environment, so that the cooling rate of the indoor heat exchanger can be increased by increasing the operating frequency of the compressor, so as to reduce the adverse effect of the adsorption refrigeration system on the indoor environment in the desorption cold accumulation process.
In this embodiment, by reducing the flow opening of the throttling device of the refrigerant circulation system, the flow rate of the refrigerant conveyed by the outdoor heat exchanger to the indoor heat exchanger can be reduced, so that the high-temperature and high-pressure refrigerant can stay in the outdoor heat exchanger for a longer time, the refrigerant can radiate heat to the outside more sufficiently, and the purpose of improving the heat radiation capacity of the outdoor heat exchanger can also be achieved. Meanwhile, the flow opening degree of the throttling device is reduced, the throttling effect on the refrigerant flowing to the indoor heat exchanger can be improved, the temperature and the pressure of the refrigerant can be lower, and the purpose of reducing the adverse influence of the adsorption refrigeration system on the indoor environment in the desorption cold accumulation process can be achieved.
In some optional embodiments, the steps of the control method for the dual refrigeration type air conditioner of the present disclosure further include: recording the duration of the adsorption refrigeration system set in the desorption cold storage mode; and if the duration of the desorption cold accumulation mode meets the preset duration condition, controlling the adsorption refrigeration system group to exit the desorption cold accumulation mode.
Optionally, the duration condition includes: the duration of the desorption cold accumulation mode is greater than or equal to the duration threshold.
Here, the desorption cold storage mode of each adsorption refrigeration system of the adsorption refrigeration system group is a process in which the adsorption medium flows in one direction, the adsorption medium flows from the adsorption part to the evaporation part in the desorption cold storage mode, and since the amount of the adsorption medium initially adsorbed and stored in the adsorption part is quantitative, the maximum amount of the adsorption medium that can be delivered to the evaporation part in the desorption cold storage mode is also fixed, and after the delivery of the adsorption medium is completed, it can be determined that the desorption cold storage is completed, so that the adsorption refrigeration system group can be controlled to exit the desorption cold storage mode. In the embodiment, whether the desorption cold accumulation mode can be exited is judged by the operation duration of the desorption mode.
Here, the set time period threshold value is a time period parameter for characterizing that the desorption cold accumulation process has been completed. Therefore, when the operation time of the desorption cold accumulation mode is greater than or equal to the set time threshold, the desorption cold accumulation process can be considered to be completed; and when the operation time of the desorption cold accumulation mode is less than the set time threshold, the desorption cold accumulation process is not completed and the adsorption medium is still conveyed.
Therefore, the desorption cold accumulation mode is controlled to exit according to the judgment result of whether the running time of the desorption cold accumulation mode is greater than or equal to the set time threshold, and sufficient adsorption media can be ensured to carry out adsorption refrigeration when the adsorption refrigeration mode is started subsequently, so that the refrigeration time and the refrigeration effect of the adsorption refrigeration are ensured.
Optionally, if it is determined that the operation duration of the desorption cold storage mode is less than the set duration threshold, the desorption cold storage mode is kept to operate until the operation duration of the desorption cold storage mode is greater than or equal to the set duration threshold.
Optionally, in this embodiment, the value range of the set duration threshold is 8min to 12 min.
Optionally, the dual refrigeration type air conditioner further includes a timing module, and the timing module may be configured to record an operation duration of the desorption cold storage mode of the adsorption refrigeration system set of the dual refrigeration air conditioner, so that the operation duration of the desorption cold storage mode may be obtained through the timing module in this embodiment.
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 unit 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 set is mainly to desorb the adsorption medium of the adsorption part by using the heat of the outdoor heat exchanger of the refrigerant heat exchange system, 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 group 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 set, 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 group 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 group to exit the desorption cold storage mode, if a triggering condition of the adsorption refrigeration mode is met, controlling one or more adsorption refrigeration systems in the adsorption refrigeration system group 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 characterized in that the double-refrigeration type air conditioner comprises a refrigerant heat exchange system and an adsorption refrigeration system group, wherein the adsorption refrigeration system group comprises one or more adsorption refrigeration systems, the evaporation parts of the adsorption refrigeration systems are arranged at the indoor side, and the adsorption parts of the adsorption refrigeration systems are arranged at an outdoor heat exchanger 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 an evaporation part temperature set of the adsorption refrigeration system group; wherein the first mode comprises: the refrigerant heat exchange system is in a refrigerant refrigeration mode, and the adsorption refrigeration system set is in a desorption cold accumulation mode; the evaporator temperature set comprises a first temperature of an evaporator of each of the adsorption refrigeration systems;
and controlling the operation state of the desorption cold accumulation mode of one or more adsorption refrigeration systems in the adsorption refrigeration system group according to the temperature set of the evaporation part of the adsorption refrigeration system group.
2. The control method according to claim 1, wherein controlling the operating state of the desorption cold storage mode of one or more adsorption refrigeration systems in the adsorption refrigeration system group according to the evaporation portion temperature set of the adsorption refrigeration system group comprises:
controlling to reduce or block the conveying flow of the adsorption medium of the first adsorption refrigeration system; the first adsorption refrigeration system is an adsorption refrigeration system which meets a first temperature condition in the adsorption refrigeration system group, and the first temperature condition is that the first temperature of an evaporation part is greater than or equal to a first set temperature threshold value;
controlling and increasing the conveying flow of the adsorption medium of the second adsorption refrigeration system; wherein the second adsorption refrigeration system is an adsorption refrigeration system that does not satisfy the first temperature condition in the adsorption refrigeration system group.
3. The control method according to claim 1, wherein controlling the operating state of the desorption cold storage mode of one or more adsorption refrigeration systems in the adsorption refrigeration system group according to the evaporation portion temperature set of the adsorption refrigeration system group comprises:
and when one of the adsorption refrigeration systems of the adsorption refrigeration system set meets a second temperature condition, controlling the adsorption refrigeration system set to exit the desorption cold storage mode.
4. The control method according to claim 1, wherein the operating state of the refrigerant heat exchange system is controlled according to a temperature set of an evaporation part of the adsorption refrigeration system group.
5. The control method of claim 4, wherein controlling the operating state of the refrigerant heat exchange system according to the temperature set of the evaporation part of the adsorption refrigeration system group comprises:
acquiring the minimum value of the first temperature in the evaporation part temperature set;
and controlling and adjusting the heat dissipation capacity of an outdoor heat exchanger of the refrigerant heat exchange system according to the temperature difference value between the minimum value of the first temperature and a second set temperature threshold value.
6. The control method according to claim 5, wherein the temperature difference is in positive correlation with a heat dissipation amount of the outdoor heat exchanger.
7. The control method according to claim 1, characterized by further comprising:
recording the duration of the desorption cold accumulation mode of the adsorption refrigeration system set;
and if the duration of the desorption cold accumulation mode meets a preset duration condition, controlling the adsorption refrigeration system group to exit the desorption cold accumulation mode.
8. The control method according to claim 7, wherein the duration condition includes: the duration of the desorption cold accumulation mode is greater than or equal to the duration threshold.
9. The control device is characterized in that the double-refrigeration type air conditioner comprises a refrigerant heat exchange system and an adsorption refrigeration system group, wherein the adsorption refrigeration system group comprises one or more adsorption refrigeration systems, the evaporation parts of the adsorption refrigeration systems are arranged at the indoor side, and the adsorption parts of the adsorption refrigeration systems are arranged at an outdoor heat exchanger 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;
an adsorption refrigeration system group consisting of 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 adsorption part is arranged at an outdoor heat exchanger of the refrigerant heat exchange system, and an adsorption medium conveying flow path is constructed between the adsorption part and the evaporation part;
the control device for the dual cooling type air conditioner as claimed in claim 9.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114517967A (en) * | 2022-03-31 | 2022-05-20 | 美的集团武汉暖通设备有限公司 | Control method of air conditioner, air conditioner and computer readable storage medium |
| CN114593479A (en) * | 2022-03-17 | 2022-06-07 | 青岛海尔空调电子有限公司 | Air conditioning system, control method and device thereof and storage medium |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114593479A (en) * | 2022-03-17 | 2022-06-07 | 青岛海尔空调电子有限公司 | Air conditioning system, control method and device thereof and storage medium |
| CN114593479B (en) * | 2022-03-17 | 2023-11-24 | 青岛海尔空调电子有限公司 | Air conditioning system, control method and device thereof, and storage medium |
| CN114517967A (en) * | 2022-03-31 | 2022-05-20 | 美的集团武汉暖通设备有限公司 | Control method of air conditioner, air conditioner and computer readable storage medium |
| CN114517967B (en) * | 2022-03-31 | 2024-01-23 | 美的集团武汉暖通设备有限公司 | Air conditioner control method, air conditioner and computer readable storage medium |
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