CN112880143A - 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

Info

Publication number
CN112880143A
CN112880143A CN202110122905.6A CN202110122905A CN112880143A CN 112880143 A CN112880143 A CN 112880143A CN 202110122905 A CN202110122905 A CN 202110122905A CN 112880143 A CN112880143 A CN 112880143A
Authority
CN
China
Prior art keywords
heat exchanger
indoor
pipeline
parallel
outdoor
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202110122905.6A
Other languages
Chinese (zh)
Inventor
代传民
许文明
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Qingdao Haier Smart Technology R&D Co Ltd
Haier Smart Home Co Ltd
Original Assignee
Qingdao Haier Smart Technology R&D Co Ltd
Haier Smart Home Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Qingdao Haier Smart Technology R&D Co Ltd, Haier Smart Home Co Ltd filed Critical Qingdao Haier Smart Technology R&D Co Ltd
Priority to CN202110122905.6A priority Critical patent/CN112880143A/en
Publication of CN112880143A publication Critical patent/CN112880143A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • 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
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2600/00—Control issues
    • F25B2600/25—Control of valves

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fuzzy Systems (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Thermal Sciences (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 refrigerant heat exchange system operates in a refrigerant refrigeration mode, acquiring the operating frequency of a compressor; when the running frequency of the compressor is less than or equal to the set frequency, executing the on-off operation of the first pipeline; after the on-off operation of the first pipeline is executed, the superheat degree of a refrigerant heat exchange system is obtained; and if the superheat degree meets the preset protection condition, executing the on-off operation of the second pipeline. The control method can adjust the on-off state of the refrigerant flow paths of the two outdoor heat exchangers according to the running frequency and the superheat degree of the compressor, so that the indoor heat exchange area of the refrigerant heat exchange system is matched with the compression performance of the refrigerant heat exchange system, and the working efficiency of the desorption cold storage mode can be ensured, so that the working efficiency of the desorption cold storage mode is ensured. 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 refrigerant heat exchange system operates in a refrigerant refrigeration mode, acquiring the operating frequency of a compressor;
when the running frequency of the compressor is less than or equal to the set frequency, executing the on-off operation of the first pipeline; after the on-off operation of the first pipeline is executed, the refrigerant flow path of the first indoor heat exchanger is conducted, and the refrigerant flow path of the second indoor heat exchanger is disconnected;
after the on-off operation of the first pipeline is executed, the superheat degree of a refrigerant heat exchange system is obtained;
if the superheat degree meets the preset protection condition, executing on-off operation of a second pipeline; after the second pipeline is switched on and off, the refrigerant flow paths of the first indoor heat exchanger and the second indoor heat exchanger are conducted.
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 system comprises a refrigerant heat exchange system, a first adsorption refrigeration system, a second adsorption refrigeration system and a control device for the double-refrigeration type air conditioner in some embodiments;
wherein, refrigerant heat transfer system includes:
the first indoor heat exchanger and the second indoor heat exchanger are connected in series through a first series pipeline;
the first outdoor heat exchanger and the second outdoor heat exchanger are connected in series through a second series pipeline;
the first indoor parallel pipeline is connected to the first indoor heat exchanger in parallel and comprises a first indoor parallel node which is arranged on the first serial pipeline and is positioned on the near side of the second indoor heat exchanger;
the second indoor parallel pipeline is connected to the second indoor heat exchanger in parallel and comprises a second indoor parallel node which is arranged on the first serial pipeline and is positioned on the near side of the first indoor heat exchanger;
the first outdoor parallel pipeline is connected to the first outdoor heat exchanger in parallel and comprises a first outdoor parallel node which is arranged on the second serial pipeline and is positioned on the near side of the second outdoor heat exchanger;
the first outdoor parallel pipeline is connected to the second outdoor heat exchanger in parallel and comprises a first outdoor parallel node which is arranged on the second serial pipeline and is positioned on the near side of the first outdoor heat exchanger;
the first indoor parallel node and the second indoor parallel node are communicated with each other on the first serial pipeline in a break-make manner; the first outdoor parallel node and the second outdoor parallel node are communicated with each other on the second serial pipeline in a break-make manner;
the first adsorption refrigeration system includes: the first evaporation part is arranged at the first indoor heat exchanger and the first adsorption part is arranged at the first outdoor heat exchanger, and the first evaporation part and the adsorption part can be connected in a break-and-make mode;
the second adsorption refrigeration system includes: the second evaporation part is arranged at the second indoor heat exchanger, and the second adsorption part is arranged at the second outdoor heat exchanger and can be connected with the second adsorption part in an on-off mode.
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 provided by the embodiment of the disclosure can adjust the on-off state of the refrigerant flow paths of the two outdoor heat exchangers according to the running frequency and the superheat degree of the compressor under the condition that the refrigerant heat exchange system runs in a refrigerant refrigeration mode, so that the indoor heat exchange area of the refrigerant heat exchange system is matched with the compression performance of the refrigerant heat exchange system; the desorption cold accumulation states of the two corresponding adsorption refrigeration systems can be adjusted, so that the running number of the adsorption refrigeration systems can be matched with the current state of the refrigerant heat exchange system, and the working efficiency of the desorption cold accumulation mode is ensured; 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 a plurality of adsorption refrigeration systems; 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, an outdoor heat exchanger, a compressor 13, a throttling device 14 and other components; the indoor heat exchanger, the outdoor heat exchanger, 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.
In this embodiment, the indoor heat exchangers at least include a first indoor heat exchanger 111 and a second indoor heat exchanger 121 serially connected by a first serial pipeline 311, and the refrigerant sequentially flows through the two indoor heat exchangers through the first serial pipeline 311; the outdoor heat exchangers at least include a first outdoor heat exchanger 112 and a second outdoor heat exchanger 122 serially connected by a second serial pipeline 312, and the refrigerant sequentially flows through the two outdoor heat exchangers through the second serial pipeline 312.
Here, the dual cooling type air conditioner includes an indoor unit and an outdoor unit, wherein the first indoor heat exchanger 111 and the second indoor heat exchanger 121 are disposed in the indoor unit, and an indoor fan for driving indoor air to exchange heat with the indoor heat exchanger is further disposed in the indoor unit; the first outdoor heat exchanger 112, the second outdoor heat exchanger 122, the compressor 13, and the like are disposed in an outdoor unit, and an outdoor fan for exchanging heat between outdoor air and the outdoor heat exchangers is also disposed in the outdoor unit, wherein the two outdoor heat exchangers are disposed 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.
The refrigerant flow direction set when the refrigerant heat exchange system operates in the refrigeration mode is that a high-temperature refrigerant discharged by the compressor 13 flows through the first outdoor heat exchanger 112 and the second outdoor heat exchanger 122 successively and exchanges heat with the outdoor environment respectively, then flows into the second indoor heat exchanger 121 and the first indoor heat exchanger 111 successively and exchanges heat with the indoor environment respectively, and finally flows back to the compressor 13 to be compressed again; in the process, the refrigerant flowing through the two outdoor heat exchangers emits heat to the outdoor environment, the refrigerant flowing through the two indoor heat exchangers absorbs heat from the indoor environment, and the indoor heat can be continuously discharged to the outdoor environment through the circulating flow of the refrigerant in the refrigerant circulating loop, so that the refrigeration purpose of reducing the temperature of the indoor environment can be achieved.
The refrigerant flow direction that the refrigerant heat transfer system injects when operation dehumidification mode is the same with the refrigerant flow direction of refrigeration mode, the difference lies in, through adjusting some operating parameters during air conditioner operation dehumidification mode, if reduce throttling arrangement 14's flow aperture etc., can make the temperature and the pressure of the refrigerant that flows into two indoor heat exchangers lower, thereby make two indoor heat exchangers can reach lower temperature along with the endothermic evaporation of refrigerant, like this, when the surface temperature of two indoor heat exchangers is less than the dew point temperature of current operating mode, the steam in the room air that flows through indoor heat exchanger just can condense on indoor heat exchanger, thereby reach the purpose that reduces the room air humidity.
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 two indoor heat exchangers to exchange heat with the outdoor environment, then flows into the two outdoor heat exchangers to exchange heat with the indoor environment, and finally flows back to the compressor 13 to be compressed again; in the process, the refrigerant flowing through the two indoor heat exchangers emits heat to the indoor environment, the refrigerant flowing through the two outdoor heat exchangers 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 circulating loop, so that the heating purpose of improving 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 refrigerant heat exchange system further includes a first indoor parallel pipeline 321, the first indoor parallel pipeline 321 is connected in parallel with the first indoor heat exchanger 111, that is, a liquid inlet and outlet port of the first indoor parallel pipeline 321 is correspondingly communicated with a liquid inlet and outlet port of the first indoor heat exchanger 111, and the parallel node includes a first indoor parallel node disposed on the first serial pipeline 311 and located near the second indoor heat exchanger 121. The refrigerant may flow through the first indoor heat exchange flow path defined by the first indoor heat exchanger 111 and the first indoor parallel line 321, respectively.
The first indoor parallel pipeline 321 is provided with a first indoor parallel valve 431, which can be used to control the on-off state and flow rate adjustment of the first indoor parallel pipeline 321.
The refrigerant heat exchanger system further includes a second indoor parallel pipeline 322, the second indoor parallel pipeline 322 is connected in parallel with the second indoor heat exchanger 121, that is, the liquid inlet and outlet ports of the second indoor parallel pipeline 322 are correspondingly communicated with the liquid inlet and outlet ports of the second indoor heat exchanger 121, and the parallel node includes a second indoor parallel node which is disposed on the first serial pipeline 311 and located near the first indoor heat exchanger 111. The refrigerant may flow through the second indoor heat exchange flow path defined by the second indoor heat exchanger 121 and the second indoor parallel line 322, respectively.
The second indoor parallel pipeline 322 is provided with a second indoor parallel valve 432, which can be used to control the on-off state and flow rate adjustment of the second indoor parallel pipeline 322.
Here, the first indoor parallel node and the second indoor parallel node are in on-off communication on the first series line 311; the number of the indoor heat exchangers through which the refrigerant flows can be controlled by controlling the on/off state of the first serial line 311, thereby affecting the state of the adsorption medium of the evaporation portion corresponding to the indoor heat exchanger.
For example, when the refrigerant heat exchange system operates in the cooling mode, the refrigerant flows through the second indoor heat exchanger 121 first and flows through the first indoor heat exchanger 111 first; when the first serial line 311 is in the off state, the second indoor parallel valve 432 is in the off state, and the first indoor parallel valve 431 is in the on state, the refrigerant normally flows through the second indoor heat exchanger 121, the flowing-out refrigerant flows back to the compressor through the first indoor parallel line 321, at this time, no refrigerant or only a small amount of refrigerant flows through the first indoor heat exchanger 111, and the first indoor heat exchanger 111 does not absorb heat to the surrounding environment.
When the first series line 311 is in the off state, the second parallel indoor valve 432 is in the on state, and the first parallel indoor valve 431 is in the off state, the refrigerant does not flow through the second indoor heat exchanger 121, and the refrigerant flows into the first indoor heat exchanger 111 through the second parallel indoor line 322, and at this time, the first indoor heat exchanger 111 does not absorb heat to the ambient environment.
And when the first serial line 311 is in a conducting state, the first indoor parallel valve 431 is in a disconnecting state, and the second indoor parallel valve 432 is in a disconnecting state, the refrigerant flows through the second indoor heat exchanger 121 and the first indoor heat exchanger 111 in sequence, and at this time, the first indoor heat exchanger 111 and the second indoor heat exchanger 121 both absorb heat to the surrounding environment.
Optionally, a first series valve 41 is disposed on the first series line 311, and may be used to control the on/off state and flow rate regulation of the first series line 311.
The refrigerant heat exchange system further includes a first outdoor parallel pipeline 331, the first outdoor parallel pipeline 331 is connected in parallel with the first outdoor heat exchanger 112, that is, the liquid inlet and outlet ports of the first outdoor parallel pipeline 331 are correspondingly communicated with the liquid inlet and outlet ports of the first outdoor heat exchanger 112, and the parallel node includes a first outdoor parallel node disposed on the second series pipeline 312 and located near the second outdoor heat exchanger 122. The refrigerant may flow through the first outdoor heat exchange flow path and the first outdoor parallel line 331 defined by the first outdoor heat exchanger 112, respectively.
The first outdoor parallel pipeline 331 is provided with a first outdoor parallel valve 441, which can be used to control the on-off state and flow rate adjustment of the first outdoor parallel pipeline 331.
The refrigerant heat exchanger system further includes a second outdoor parallel pipeline 332, the second outdoor parallel pipeline 332 is connected in parallel with the second outdoor heat exchanger 122, that is, the liquid inlet and outlet ports of the second outdoor parallel pipeline 332 are correspondingly communicated with the liquid inlet and outlet ports of the second outdoor heat exchanger 122, and the parallel node includes a second outdoor parallel node disposed on the first serial pipeline 311 and located near the first outdoor heat exchanger 112. The refrigerant may flow through the second outdoor heat exchange flow path defined by the second outdoor heat exchanger 122 and the second outdoor parallel line 332, respectively.
The second outdoor parallel line 332 is provided with a second outdoor parallel valve 442, which can be used to control the on-off state and flow rate of the second outdoor parallel line 332.
Here, the first outdoor parallel node and the second outdoor parallel node are in on-off communication on the second series line 312; optionally, a second series valve 42 is disposed on the second series line 312, and can be used to control the on/off state and flow rate regulation of the second series line 312.
The refrigerant flowing manners of the first outdoor heat exchanger 112 and the second outdoor heat exchanger 122 in the on-off states of the different valves may refer to the refrigerant flowing manners of the two indoor heat exchangers, and are not described herein again.
In some optional embodiments, the dual refrigeration type air conditioner is provided with two adsorption refrigeration systems, including a first adsorption refrigeration system and a second adsorption refrigeration system, wherein the two adsorption refrigeration systems can perform two processes of desorption cold accumulation and adsorption cold accumulation.
The first adsorption refrigeration system comprises a first adsorption part 21 and a first evaporation part 231, wherein the first adsorption part 21 is arranged at the first outdoor heat exchanger 112 of the refrigerant heat exchange system, and is filled with an adsorbent which is used for absorbing heat of the first outdoor heat exchanger 112 in a desorption cold storage stage, releasing an adsorption medium, adsorbing the adsorption medium in an adsorption refrigeration stage and releasing heat; the first evaporation part 231 is disposed at the first indoor heat exchanger 111 at the indoor side, and is used for storing the liquid adsorption medium from the first adsorption part 21 in the desorption cold storage phase, and absorbing heat from the indoor environment in the adsorption refrigeration phase and delivering the vaporized adsorption medium to the first adsorption part 21.
In some embodiments, the first adsorption part 21 is disposed between the outdoor fan and the first outdoor heat exchanger 112. Here, since the first outdoor heat exchanger 112 is disposed on the air inlet side of the outdoor fan, under the driving action of the outdoor fan, the heat dissipated by the first outdoor heat exchanger 112 can firstly flow through the first adsorption part 21 sandwiched between the outdoor fan and the first outdoor heat exchanger 112, so that the first adsorption part 21 can absorb a large amount of heat for cold desorption and storage in the cold desorption and storage 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 first outdoor heat exchanger 112 is a plate-shaped structure, and the cross-sectional profile of the first outdoor heat exchanger is in the form of a semi-encircling outdoor fan; therefore, in order to improve the heat exchange effect between the first adsorption part 21 and the first outdoor heat exchanger 112, in the embodiment, the overall shape of the first adsorption part 21 is adapted to the first outdoor heat exchanger 112, and is also designed to be in a half-hoop outdoor fan form, and the first adsorption part is arranged to be attached to the first outdoor heat exchanger 112, so that the heat exchange area between the first adsorption part 21 and the first outdoor heat exchanger 112 is effectively increased, and the waste heat utilization efficiency of the first outdoor heat exchanger 112 is improved.
Optionally, the first adsorption part 21 of the first adsorption refrigeration system is arranged along the transverse direction or the longitudinal direction of the outdoor heat exchanger, and the first adsorption part 21 is designed into a shape matched with the position of the outdoor heat exchanger corresponding to the first adsorption part, so as to ensure the heat exchange efficiency of the first adsorption refrigeration system and the outdoor heat exchanger.
The second adsorption refrigeration system comprises a second adsorption part 22 and a second evaporation part 232, wherein the second adsorption part 22 is arranged at the second outdoor heat exchanger 122 of the refrigerant heat exchange system, and the inside of the second adsorption part is filled with an adsorbent which is used for absorbing heat of the second outdoor heat exchanger 122 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 second evaporation part 232 is disposed at the second indoor heat exchanger 121 at the indoor side, and is used for storing the liquid adsorption medium from the second adsorption part 22 in the desorption cold storage phase, and absorbing heat from the indoor environment in the adsorption refrigeration phase and delivering the vaporized adsorption medium to the second adsorption part 22.
Optionally, the structural design and the matching form of the second adsorption part 22 and the second outdoor heat exchanger 122 may adopt the same technical scheme as that of the first adsorption part 21 and the first outdoor heat exchanger 112 in the foregoing embodiment, which is not described herein again.
Optionally, a fourth adsorption medium conveying flow path is configured between the first adsorption part 21 and the second adsorption part 22; in this way, during the desorption cold storage and adsorption cold storage stages, the gaseous adsorbent can flow between first adsorption part 21 and second adsorption part 22 through the fourth adsorbent flow path, thereby improving the desorption cold storage effect and the adsorption refrigeration effect of the adsorption refrigeration system as a whole.
Optionally, the first evaporation part 231 and the second evaporation part 232 are of plate-fin structures, and the plate-fin structures can effectively improve the heat exchange effect between the adsorption medium in the evaporation part and the indoor environment in the desorption cold storage stage, and enhance the heat absorption and refrigeration capacity; meanwhile, the first evaporation unit 231 and the second evaporation unit 232 are formed therein with a flow path through which the adsorbent passes, the flow path of the adsorbent communicating with the adsorbent transport flow path.
In some optional embodiments, the indoor heat exchanger is in a structural form that the longitudinal section of the indoor heat exchanger is in a broken line shape and semi-encircles the indoor fan; therefore, in order to improve the heat exchange effect between the two evaporation portions and the indoor environment, in this embodiment, the overall shapes of the two evaporation portions are adapted to the indoor heat exchanger, and the two evaporation portions are also designed to be in a half-encircling indoor fan form and are attached to the indoor heat exchanger, so that the heat exchange area between the evaporation portions and the air flow flowing through the indoor unit is increased, and the heat absorption and refrigeration capacity is improved.
Here, in order to enable the evaporation parts of the two adsorption refrigeration systems to uniformly absorb heat from the indoor environment, the first evaporation part 231 and the second evaporation part 232 of the two adsorption refrigeration systems are also arranged side by side; optionally, the first evaporation part 231 and the second evaporation part 232 are arranged side by side along the transverse direction or the longitudinal direction of the indoor heat exchanger, and the first evaporation part 231 and the second evaporation part 232 are designed to be matched with the corresponding parts of the indoor heat exchanger.
Optionally, a third adsorbent conveying flow path is configured between the first evaporation part 231 and the second evaporation part 232; in this way, in the desorption cold accumulation and adsorption cold accumulation stages, the liquid and gaseous adsorption media can flow between the first evaporation part 231 and the second evaporation part 232, so that the desorption cold accumulation effect and the adsorption refrigeration effect of the whole adsorption refrigeration system are improved.
In addition, the first 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 conveying flow path, and is configured to receive the gaseous adsorption medium conveyed by the first adsorption portion 21 in the desorption cold storage stage, dissipate heat and condense the gaseous adsorption medium, so as to liquefy at least part of the gaseous adsorption medium, and continuously convey the liquefied adsorption medium to the first evaporation portion 231 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 refrigeration mode, the outdoor heat exchanger discharges heat outwards, the temperature of the outdoor heat exchanger is influenced by the temperature of the outdoor heat exchanger, and the temperature of the first adsorption part 21 is generally higher than the temperature of the outdoor environment, so that after gaseous adsorption media released by the influence of high-temperature heat of the first adsorption part 21 flow into the first middle heat dissipation part 24, the heat is dissipated to the outdoor environment, and at least part of the gaseous adsorption media is condensed into liquid again.
Meanwhile, the second adsorption refrigeration system further includes a second intermediate heat-sink 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 continuously deliver the liquefied adsorbent medium to the second evaporation portion 232 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 and second intermediate heat sink pieces 24 and 25 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, the first adsorption part 21 and the first evaporation part 231 are configured with the above-described first adsorption medium transport flow path therebetween, and the adsorption medium can flow among the first adsorption part 21, the first intermediate heat sink part 24, and the first evaporation part 231 via the first adsorption medium transport flow path.
Similarly, the second adsorption part 22 and the second evaporation part 232 have the aforementioned second adsorption medium transport flow path therebetween, through which the adsorption medium can flow between the second adsorption part 22, the second intermediate heat dissipation part 25, and the second evaporation part 232.
Here, for convenience of explaining the operation of the adsorption refrigeration system, taking the first adsorption refrigeration system as an example, the first adsorption medium delivery flow path includes a first desorption flow path and a first adsorption flow path, wherein the first desorption flow path is a flow path for desorption cold storage stage adsorption medium delivery, and the first adsorption flow path 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 first evaporation part 231 are sequentially connected in series, so that the adsorption medium flows out from the first adsorption part 21 in the desorption cold storage stage, then sequentially enters the first intermediate heat radiation part 24 and the first evaporation part 231, and finally is stored in the first evaporation part 231 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 first evaporation part 231'; 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 first evaporation part 231.
In the first adsorption flow path, the first evaporation part 231 and the first adsorption part 21 are connected in series, so that the adsorption medium flows out of the first evaporation part 231 in the adsorption refrigeration stage, then enters the first adsorption part 21 through the first adsorption flow path, and is adsorbed again by the adsorbent in the first adsorption part 21.
Optionally, a check valve is disposed in the first adsorption flow path, and the check valve limits that the adsorption medium can be transported only in the flow direction of "first evaporation part 231 → 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 adsorption medium conveyance flow path is configured between the second adsorption part 22 and the second evaporation part 232 of the second adsorption refrigeration system, and the adsorption medium can flow among the second adsorption part 22, the second intermediate heat radiation part 25, and the second evaporation part 232 via the second adsorption medium conveyance 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 four control valves, wherein the first control valve 26 is disposed on the first adsorption medium conveying flow path and is used for controlling the on-off state and flow rate of the first adsorption medium conveying flow path, the second control valve 27 is disposed on the second adsorption medium conveying flow path and is used for controlling the on-off state and flow rate of the second adsorption medium conveying flow path, the third control valve 28 is disposed on the third adsorption medium conveying flow path and is used for controlling the on-off state and flow rate of the third adsorption medium conveying flow path, and the fourth control valve 29 is disposed on the fourth adsorption medium conveying flow path and is used for controlling the on-off state and flow rate of the fourth adsorption medium conveying flow path.
Here, the first control valve 26 and the second control valve 27 are provided on the non-parallel flow path section of the desorption flow path close to the corresponding adsorption section in the above embodiment, so that the flow rate on-off control of the adsorption section in two stages of desorption heat storage and adsorption cooling 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 first outdoor heat exchanger 112 and the second outdoor heat exchanger 122 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 first evaporation part 231 and the second evaporation part 232, respectively, to be used as "cold energy" 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 operating in the refrigerant cooling mode or the refrigerant dehumidification mode, the first outdoor heat exchanger 112 and the second outdoor heat exchanger 122 are not operated and do not release heat to the outside, and therefore the temperature of the first adsorption part 21 is lower than that of the first outdoor heat exchanger 112 when releasing heat, and the temperature of the second adsorption part 22 is lower than that of the second outdoor heat exchanger 122 when releasing heat, so that the adsorbents in the two adsorption parts start to adsorb the adsorption medium again, the liquid adsorption mediums in the first evaporation part 231 and the second evaporation part 232 start 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 flow back to the first adsorption part 21 and the second adsorption part 22 through the respective adsorption flow paths, during which the adsorption medium absorbs heat from the indoor environment and is re-adsorbed by the adsorbent, the heat is released to the outdoor environment where the adsorption part is located, and therefore, the adsorption refrigeration and temperature reduction of the indoor environment can be realized by the reverse flow of the adsorption medium compared with the desorption cold storage stage.
Here, in the desorption cold storage mode and the adsorption refrigeration mode, only one of the first adsorption 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. Meanwhile, only one of the first evaporation part 231 and the second evaporation part 232 may be activated, or two of the first evaporation part 231 and the second evaporation part 232 may be activated.
For example, in the adsorption cooling mode, one way of controlling is to activate only the first adsorption part 21, and the evaporation part may control to activate only the first evaporation part 231 (the third adsorption medium delivery flow path between the first evaporation part 231 and the second evaporation part 232 is disconnected), or to activate both the first evaporation part 231 and the second evaporation part 232 (the third adsorption medium delivery flow path between the first evaporation part 231 and the second evaporation part 232 is connected), so that the heat absorption rate may be changed by changing the number of the activated evaporation parts.
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, acquiring the operating frequency of a compressor when a refrigerant heat exchange system operates in a refrigerant refrigeration mode;
optionally, in a high-temperature working condition in summer, when the dual-refrigeration air conditioner is started to operate, the refrigerant heat exchange system operates in a refrigerant refrigeration mode in a default starting mode, and in the process, an indoor heat exchanger of the refrigerant heat exchange system starts to absorb heat from an indoor environment so as to reduce the temperature of the indoor environment; meanwhile, the heat absorbed by the indoor heat exchanger is transferred to the outdoor heat exchanger along with the refrigerant, and the heat 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 generally higher than that of the outdoor environment.
Here, the operation frequency of the compressor of the refrigerant heat exchange system is one of the conventional operation parameters of the existing air conditioner product, and since the obtaining mode of the operation frequency of the compressor does not relate to the innovation point of the present application, the obtaining mode of the operation frequency of the compressor can refer to the related art, and is not described herein again.
S202, when the running frequency of the compressor is less than or equal to the set frequency, executing on-off operation of a first pipeline;
in this embodiment, the set frequency is a critical value parameter for measuring the amount of the refrigerant compressed by the compressor, and may also be regarded as a critical parameter for representing the current cooling capacity of the refrigerant heat exchange system. Here, when the current operating frequency of the compressor is greater than the set frequency, it is described that the amount of refrigerant compressed by the compressor is large and the refrigerating capacity of the refrigerant heat exchange system is high; and under the condition that the current operating frequency of the compressor is less than or equal to the set frequency, the situation shows that the quantity of the refrigerant compressed by the compressor is less and the refrigerating capacity of the refrigerant heat exchange system is lower.
Therefore, in the embodiment of the present disclosure, the specific way of the on-off operation of the selected pipeline is controlled according to the comparison result of the operation frequency of the compressor and the set frequency, so that the on-off relationship of the refrigerant flow paths of the two indoor heat exchangers can be changed, the adjustment of the heat exchange area between the indoor heat exchangers and the indoor environment can be realized, and the heat exchange area can be adapted to the amount of the refrigerant compressed by the compressor and the refrigerating capacity of the refrigerant heat exchange system.
Optionally, the set frequency satisfies the following condition:
0.45fmax≤fsetting up＜0.55fmax；
Wherein f isSetting upTo set the frequency; f. ofmaxThe specific value is determined according to the type of the compressor for the maximum operating frequency of the compressor, and the present invention is not particularly limited.
In this embodiment, when the operating frequency of the compressor is less than or equal to the set frequency, since the amount of the refrigerant compressed by the compressor is small and the refrigeration capacity corresponding to the refrigerant heat exchange system is low, only one of the two indoor heat exchangers can be started to exchange heat with the indoor environment, so as to adapt to the low demand state of the refrigerant heat exchange system with small amount of the refrigerant for external heat dissipation.
After the on-off operation of the first pipeline is executed, the refrigerant flow path of the first indoor heat exchanger is conducted, and the refrigerant flow path of the second indoor heat exchanger is disconnected, so that the technical purpose that the single outdoor heat exchanger exchanges heat with the indoor environment can be achieved through the first indoor heat exchanger with the conducted refrigerant flow path.
In this embodiment, the performing a first on-off operation of the pipeline includes: the first indoor parallel pipeline is disconnected and communicated, the second indoor parallel pipeline is communicated, and the first serial pipeline between the first outdoor parallel node and the second outdoor parallel node is disconnected and communicated. Under the condition that the first indoor parallel pipelines are disconnected and communicated, the refrigerant can only flow through the first indoor heat exchanger; and under the condition that the second indoor parallel pipelines are communicated and the first serial pipelines between the first indoor parallel nodes and the second indoor parallel nodes are disconnected, the refrigerant cannot flow through the second indoor heat exchanger, but flows through the second indoor parallel pipelines.
The first indoor parallel pipeline, the second indoor parallel pipeline and the first serial pipeline are respectively provided with an independent control valve, and each control valve can be used for controlling the on-off state of the pipeline where the control valve is located. Therefore, in the present embodiment, the control of closing the first indoor parallel pipeline, the control valve on the first serial pipeline and the control valve on the second indoor parallel pipeline can be realized.
Optionally, when the operating frequency of the compressor is less than or equal to the set frequency, the on-off operation of the first pipeline is not executed, at this time, the first indoor heat exchanger and the second indoor heat exchanger are both in a conducting state, at this time, the first indoor parallel pipeline is disconnected and communicated, the second indoor parallel pipeline is disconnected and communicated, and the first serial pipeline between the first indoor parallel node and the second indoor parallel node is kept communicated.
S203, after the on-off operation of the first pipeline is executed, the superheat degree of the refrigerant heat exchange system is obtained;
in this embodiment, the superheat degree of the refrigerant heat exchange system is a parameter for balancing whether the first indoor heat exchanger can satisfy the refrigerant heat exchange efficiency. Under the condition of low superheat degree, the fact that the heat absorption capacity of the refrigerant is low, the heat exchange efficiency of the refrigerant passing through the first indoor heat exchanger and the indoor environment is low, and the heat exchange area is insufficient is shown; and under the condition of higher superheat degree, the condition that the heat absorption capacity of the refrigerant is more and the quantity of the refrigerant for heat exchange in the refrigerant heat exchange system is insufficient is shown. Therefore, in the embodiment, the number of the started indoor heat exchangers is readjusted according to the superheat degree of the refrigerant heat exchange system, so that the starting number of the indoor heat exchangers of the refrigerant heat exchange system is more accurately controlled, and the indoor heat exchangers can be matched with the heat dissipation capacity of the refrigerant.
Optionally, the step of obtaining the superheat degree of the refrigerant heat exchange system in step S203 includes: acquiring the exhaust temperature of a compressor and the temperature of a liquid inlet refrigerant of a first indoor heat exchanger; and calculating to obtain the superheat degree according to the exhaust temperature and the liquid inlet refrigerant temperature.
Illustratively, the discharge temperature T of the compressor is detectedExhaust of gasesTemperature T of refrigerant of inlet liquid of first indoor heat exchanger1The degree of superheat can be calculated according to the following formula:
△T＝Texhaust of gases-T1；
Wherein Δ T is a degree of superheat.
Here, the refrigerant heat exchange system is provided with a temperature sensor at an exhaust end of the compressor and a liquid inlet end of the first indoor heat exchanger, and the two temperature sensors can detect an exhaust temperature of the compressor and a liquid inlet refrigerant temperature of the first indoor heat exchanger respectively.
S204, if the superheat degree meets a preset protection condition, executing on-off operation of a second pipeline;
optionally, the preset protection conditions include: the superheat degree of the refrigerant heat exchange system is less than or equal to a preset superheat degree threshold value.
Under the condition that the superheat degree meets the preset protection condition, it is stated that the first indoor heat exchanger cannot meet the heat exchange requirement of the current refrigerant state, and therefore on-off operation of the second pipeline is controlled to be executed, so that refrigerant flow paths of the first indoor heat exchanger and the second indoor heat exchanger are both conducted, and the effect of utilizing the two indoor heat exchangers to refrigerate and cool the indoor environment is achieved through on-off operation of the second pipeline.
In an alternative embodiment, performing a second on/off operation includes: the first indoor parallel pipeline is disconnected and communicated, the second indoor parallel pipeline is disconnected and communicated, and the first series pipeline between the first indoor parallel node and the second indoor parallel node is communicated. Here, in the case where the first indoor parallel line is disconnected from the second indoor parallel line, the refrigerant cannot flow through the two indoor parallel lines; meanwhile, the first series pipeline between the first indoor parallel node and the second indoor parallel node is communicated, so that the refrigerant can sequentially pass through the two indoor heat exchangers and can exchange heat with the indoor environment in the first indoor heat exchanger and the second indoor heat exchanger, the refrigerant can absorb heat more fully and cool, the heat exchange efficiency is effectively improved, and the refrigerating performance of the refrigerant heat exchange system is guaranteed.
In this embodiment, the control of closing the control valves on the first indoor parallel pipeline and the second indoor parallel pipeline and opening the control valve on the first serial pipeline can be realized.
The control method for the double-refrigeration type air conditioner provided by the embodiment of the disclosure can adjust the on-off state of the refrigerant flow paths of the two indoor heat exchangers according to the operation frequency of the compressor under the condition that the refrigerant heat exchange system operates in the refrigerant refrigeration mode, so that the indoor heat exchange area of the refrigerant heat exchange system is matched with the compression performance of the refrigerant heat exchange system.
In some optional embodiments, the control method for the dual refrigeration type air conditioner of the present disclosure further includes: and if the superheat degree meets the preset protection condition, controlling to start the first adsorption refrigeration system and the second adsorption refrigeration system to enter a desorption cold accumulation mode.
In this embodiment, under the condition that the superheat degree satisfies the preset protection condition, the second pipeline on-off operation is controlled to be executed, the first indoor heat exchanger and the second indoor heat exchanger both have refrigerant fluid, and the first outdoor heat exchanger and the second outdoor heat exchanger emit heat outwards at the same time, so that the first adsorption refrigeration system and the second adsorption refrigeration system are controlled to enter the desorption cold accumulation mode at the moment to utilize the two adsorption refrigeration systems to accumulate cold.
In the embodiment, when the refrigerant heat exchange system operates in the refrigerant refrigeration mode, the adsorption refrigeration system can operate in the desorption cold accumulation mode to accumulate cold; the outdoor heat exchanger discharges heat to the surrounding environment, so that the temperature of the surrounding environment 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 corresponding middle heat dissipation part along with the adsorption medium conveying flow path, and the temperature of the middle heat dissipation part is lower than that of the outdoor heat exchanger, so that the adsorption medium releases heat and condenses, and continues to flow into the evaporation part at the indoor side along with 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 some optional embodiments, the control method for the dual refrigeration type air conditioner of the present disclosure further includes: after the first adsorption refrigeration system and the second adsorption refrigeration system both enter a desorption cold accumulation mode, a third serial pipeline communicated with the first evaporation part and the second evaporation part is controlled to be communicated, and/or a fourth serial pipeline communicated with the first adsorption part and the second adsorption part is controlled to be communicated.
In this embodiment, the first outdoor heat exchanger and the second outdoor heat exchanger are connected in series, the refrigerant sequentially flows through the first outdoor heat exchanger and the second outdoor heat exchanger, and since the high-temperature refrigerant dissipates a part of heat when flowing through the outdoor heat exchanger in the preceding sequence, the heat dissipated when flowing through the other outdoor heat exchanger in the succeeding sequence is relatively small, so that the desorption efficiency of the two adsorbers respectively corresponding to the two outdoor heat exchangers is different due to the difference in heat, and the more adsorbent media desorbed by the adsorbent portion adjacent to the outdoor heat exchanger in the preceding sequence is generated, therefore, in this embodiment, the fourth series pipeline communicating the first adsorbent portion and the second adsorbent portion is controlled to be kept communicated, so that the adsorbent media can flow between the two adsorbent portions through the fourth series pipeline, wherein mainly the adsorbent media in the adsorbent portion with the larger desorption amount flow to the adsorbent portion with the smaller desorption amount, so that the adsorption medium can be delivered to the evaporation part in various paths, thereby improving the delivery rate of the adsorption medium generated by desorption.
Similarly, most of the adsorption medium in the evaporation unit is stored in a liquid state, but the internal space of the evaporation unit is also filled with a large amount of gaseous adsorption medium, so that the pressure of the gaseous adsorption medium and the liquid amount of the liquid adsorption medium can affect the rate of the adsorption medium continuously transported from the adsorption unit to the evaporation unit. For example, when the concentration of the gaseous adsorption medium is high, the pressure is high, and the amount of the liquid adsorption medium is large, the transportation of the adsorption medium is suppressed. Therefore, the third serial pipeline for communicating the first evaporation part and the second evaporation part is controlled to be communicated, so that the whole storage space of the evaporation part is increased, the adsorption medium from the adsorption part with more adsorption medium can be stored in the other evaporation part, the inhibition effect of the higher gas-liquid two-state adsorption medium quantity in the evaporation part on the adsorption medium conveying is reduced, and the subsequent conveying of the adsorption medium is accelerated.
In some optional embodiments, the control method for the dual refrigeration type air conditioner of the present disclosure further includes: when the first adsorption refrigeration system meets the preset cold accumulation completion condition, controlling the first adsorption refrigeration system to exit the desorption cold accumulation mode; or when the second adsorption refrigeration system meets the preset cold accumulation completion condition, controlling the second adsorption refrigeration system to exit the desorption cold accumulation mode.
For the first adsorption refrigeration system, optional cold storage completion conditions include: the adsorption medium quantity of the first evaporation part is greater than or equal to a first medium quantity threshold value; alternatively, the cold storage completion condition includes: the amount of the adsorbing medium in the first adsorbing portion is less than or equal to the second medium amount threshold. For the second adsorption refrigeration system, optional cold storage completion conditions include: the adsorption medium quantity of the second evaporation part is greater than or equal to a third medium quantity threshold value; alternatively, the cold storage completion condition includes: the amount of the adsorbing medium in the second adsorbing portion is less than or equal to the fourth 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 adsorption unit. In the desorption cold accumulation mode, the adsorption medium in the adsorption part flows to the corresponding evaporation part, so that when the quantity of the adsorption medium in the evaporation part exceeds a medium quantity threshold value for representing an upper limit, the quantity of the liquid adsorption medium accumulated in the evaporation part is relatively 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 adsorption part is lower than the threshold value of the medium amount for representing the lower limit, it indicates that the amount of the adsorption medium adsorbed and stored in the adsorption part or the adsorption part is small, so that the desorption cold storage mode can be controlled to exit.
Optionally, the first or third threshold amount of media is 80%, 90%, etc. of the total amount of adsorbent media.
The second or fourth threshold amount of media is 10%, 15% of the total amount of adsorbent media, and so on.
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 adsorption refrigeration system enters a desorption cold accumulation 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 desorption cold accumulation mode, the desorption cold accumulation mode of the adsorption refrigeration system mainly uses the heat of the outdoor heat exchanger of the corresponding 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 rotating speed with a smaller numerical value, the heat driven by the outdoor fan to be radiated to the outdoor environment can be reduced, and the heat can be concentrated in the surrounding environment of the adsorption part, so that the desorption rate is improved; 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 adsorption refrigeration system enters a desorption cold accumulation 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 alternative embodiments, one or both of the first and second adsorption refrigeration systems are controlled to enter the adsorption refrigeration mode if a triggering condition for the adsorption refrigeration mode is met.
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. A control method applied to a double-refrigeration type air conditioner is characterized in that the double-refrigeration type air conditioner comprises a refrigerant heat exchange system, a first adsorption refrigeration system and a second adsorption refrigeration system;
wherein, refrigerant heat transfer system includes:
the first indoor heat exchanger and the second indoor heat exchanger are connected in series through a first series pipeline;
the first outdoor heat exchanger and the second outdoor heat exchanger are connected in series through a second series pipeline;
a first indoor parallel pipeline connected in parallel to the first indoor heat exchanger and including a first indoor parallel node disposed on the first series pipeline and located near the second indoor heat exchanger;
a second indoor parallel pipeline connected in parallel to the second indoor heat exchanger and including a second indoor parallel node disposed on the first serial pipeline and located near the first indoor heat exchanger;
a first outdoor parallel pipeline connected in parallel to the first outdoor heat exchanger, the first outdoor parallel pipeline including a first outdoor parallel node provided in the second series pipeline and located near the second outdoor heat exchanger;
a first outdoor parallel pipeline connected in parallel to the second outdoor heat exchanger, the first outdoor parallel pipeline including a second outdoor parallel node provided in the second series pipeline and located near the first outdoor heat exchanger;
the first indoor parallel node and the second indoor parallel node are communicated with each other on the first serial pipeline in a break-make mode; the first outdoor parallel node and the second outdoor parallel node are communicated with each other on the second serial pipeline in a break-make manner;
the first adsorption refrigeration system includes: the first evaporation part is arranged at the first indoor heat exchanger, and the first adsorption part is arranged at the first outdoor heat exchanger and can be connected with the first adsorption part in an on-off manner;
the second adsorption refrigeration system includes: the second evaporation part is arranged at the second indoor heat exchanger, and the second adsorption part is arranged at the second outdoor heat exchanger and can be connected with the second adsorption part in an on-off manner;
the control method comprises the following steps:
when the refrigerant heat exchange system operates in a refrigerant refrigeration mode, acquiring the operating frequency of a compressor;
when the running frequency of the compressor is less than or equal to the set frequency, executing the on-off operation of a first pipeline; after the on-off operation of the first pipeline is executed, the refrigerant flow path of the first indoor heat exchanger is conducted, and the refrigerant flow path of the second indoor heat exchanger is disconnected;
after the on-off operation of the first pipeline is executed, the superheat degree of the refrigerant heat exchange system is obtained;
if the superheat degree meets the preset protection condition, executing on-off operation of a second pipeline; and after the second pipeline is switched on and off, the refrigerant flow paths of the first indoor heat exchanger and the second indoor heat exchanger are both communicated.
2. The control method of claim 1, wherein the obtaining of the superheat degree of the refrigerant heat exchange system comprises:
acquiring the exhaust temperature of the compressor and the liquid inlet refrigerant temperature of the first indoor heat exchanger;
and calculating to obtain the superheat degree according to the exhaust temperature and the liquid inlet refrigerant temperature.
3. The control method according to claim 1 or 2, characterized in that the preset protection conditions include:
the superheat degree of the refrigerant heat exchange system is less than or equal to a preset superheat degree threshold value.
4. The control method according to claim 1, wherein the set frequency satisfies the following condition:
0.45fmax≤fsetting up＜0.55fmax；
Wherein, the fmaxAt the highest operating frequency of the compressor, fSetting upIs the set frequency.
5. The control method according to claim 1, wherein the performing a first on-off operation of the pipeline comprises;
the first indoor parallel pipeline is disconnected and communicated, the second indoor parallel pipeline is communicated, and the first series pipeline between the first indoor parallel node and the second indoor parallel node is disconnected and communicated.
6. The control method according to claim 1, wherein the performing a second on-off operation of the pipeline comprises:
the first indoor parallel pipeline is disconnected and communicated, the second indoor parallel pipeline is disconnected and communicated, and the first series pipeline between the first indoor parallel node and the second indoor parallel node is communicated.
7. The control method according to claim 1, wherein if the degree of superheat satisfies a preset protection condition, further comprising:
and controlling to start the first adsorption refrigeration system and the second adsorption refrigeration system to enter a desorption cold accumulation mode.
8. The control method according to claim 7, further comprising, after the first adsorption refrigeration system and the second adsorption refrigeration system both enter a desorption cold storage mode:
controlling a third serial pipeline communicated with the first evaporation part and the second evaporation part to keep communicated; and/or the presence of a gas in the gas,
and controlling a fourth serial pipeline for communicating the first adsorption part and the second adsorption part to keep communicating.
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, a first adsorption refrigeration system and a second adsorption refrigeration system;
wherein, refrigerant heat transfer system includes:
the first indoor heat exchanger and the second indoor heat exchanger are connected in series through a first series pipeline;
the first outdoor heat exchanger and the second outdoor heat exchanger are connected in series through a second series pipeline;
a first indoor parallel pipeline connected in parallel to the first indoor heat exchanger and including a first indoor parallel node disposed on the first series pipeline and located near the second indoor heat exchanger;
a second indoor parallel pipeline connected in parallel to the second indoor heat exchanger and including a second indoor parallel node disposed on the first serial pipeline and located near the first indoor heat exchanger;
a first outdoor parallel pipeline connected in parallel to the first outdoor heat exchanger, the first outdoor parallel pipeline including a first outdoor parallel node provided in the second series pipeline and located near the second outdoor heat exchanger;
a first outdoor parallel pipeline connected in parallel to the second outdoor heat exchanger, the first outdoor parallel pipeline including a first outdoor parallel node disposed on the second series pipeline and located near the first outdoor heat exchanger;
the first indoor parallel node and the second indoor parallel node are communicated with each other on the first serial pipeline in a break-make mode; the first outdoor parallel node and the second outdoor parallel node are communicated with each other on the second serial pipeline in a break-make manner;
the first adsorption refrigeration system includes: the first evaporation part is arranged at the first indoor heat exchanger, and the first adsorption part is arranged at the first outdoor heat exchanger and can be connected with the first adsorption part in an on-off manner;
the second adsorption refrigeration system includes: the second evaporation part is arranged at the second indoor heat exchanger, and the second adsorption part is arranged at the second outdoor heat exchanger and can be connected with the second adsorption part in an on-off manner;
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 control device is applied to the double-refrigeration type air conditioner and comprises a refrigerant heat exchange system, a first adsorption refrigeration system, a second adsorption refrigeration system and the control device as claimed in claim 9;
wherein, refrigerant heat transfer system includes:
the first indoor heat exchanger and the second indoor heat exchanger are connected in series through a first series pipeline;
the first outdoor heat exchanger and the second outdoor heat exchanger are connected in series through a second series pipeline;
a first indoor parallel pipeline connected in parallel to the first indoor heat exchanger and including a first indoor parallel node disposed on the first series pipeline and located near the second indoor heat exchanger;
a second indoor parallel pipeline connected in parallel to the second indoor heat exchanger and including a second indoor parallel node disposed on the first serial pipeline and located near the first indoor heat exchanger;
a first outdoor parallel pipeline connected in parallel to the first outdoor heat exchanger, the first outdoor parallel pipeline including a first outdoor parallel node provided in the second series pipeline and located near the second outdoor heat exchanger;
a first outdoor parallel pipeline connected in parallel to the second outdoor heat exchanger, the first outdoor parallel pipeline including a first outdoor parallel node disposed on the second series pipeline and located near the first outdoor heat exchanger;
the first indoor parallel node and the second indoor parallel node are communicated with each other on the first serial pipeline in a break-make mode; the first outdoor parallel node and the second outdoor parallel node are communicated with each other on the second serial pipeline in a break-make manner;
the first adsorption refrigeration system includes: the first evaporation part is arranged at the first indoor heat exchanger, and the first adsorption part is arranged at the first outdoor heat exchanger and can be connected with the first adsorption part in an on-off manner;
the second adsorption refrigeration system includes: the second evaporation part is arranged at the second indoor heat exchanger, and the second adsorption part is arranged at the second outdoor heat exchanger and can be connected with the second adsorption part in an on-off mode.
CN202110122905.6A 2021-01-29 2021-01-29 Control method and control device for double-refrigeration type air conditioner and double-refrigeration type air conditioner Pending CN112880143A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110122905.6A CN112880143A (en) 2021-01-29 2021-01-29 Control method and control device for double-refrigeration type air conditioner and double-refrigeration type air conditioner

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110122905.6A CN112880143A (en) 2021-01-29 2021-01-29 Control method and control device for double-refrigeration type air conditioner and double-refrigeration type air conditioner

Publications (1)

Publication Number Publication Date
CN112880143A true CN112880143A (en) 2021-06-01

Family

ID=76053306

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202110122905.6A Pending CN112880143A (en) 2021-01-29 2021-01-29 Control method and control device for double-refrigeration type air conditioner and double-refrigeration type air conditioner

Country Status (1)

Country Link
CN (1) CN112880143A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113639436A (en) * 2021-08-02 2021-11-12 海尔(深圳)研发有限责任公司 Method and device for adjusting heat exchange quantity of air conditioner outdoor unit and air conditioner outdoor unit

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113639436A (en) * 2021-08-02 2021-11-12 海尔(深圳)研发有限责任公司 Method and device for adjusting heat exchange quantity of air conditioner outdoor unit and air conditioner outdoor unit
CN113639436B (en) * 2021-08-02 2022-12-23 海尔(深圳)研发有限责任公司 Method and device for adjusting heat exchange quantity of air conditioner outdoor unit and air conditioner outdoor unit

Similar Documents

Publication Publication Date Title
CN112880144A (en) Control method and control device for double-refrigeration type air conditioner and double-refrigeration type air conditioner
US7614249B2 (en) Multi-range cross defrosting heat pump system and humidity control system
CN111442493B (en) Control method and control device for double-refrigeration type air conditioner and double-refrigeration type air conditioner
JP4043074B2 (en) Refrigeration equipment
JP2016080310A (en) Cooling system
CN112393400A (en) Control method and control device for double-refrigeration type air conditioner and double-refrigeration type air conditioner
KR100761285B1 (en) Air conditioner
CN112880143A (en) Control method and control device for double-refrigeration type air conditioner and double-refrigeration type air conditioner
WO2022222587A1 (en) Air supply control method for air conditioner, air conditioner, storage medium, and compressor for air conditioner
CN111442497B (en) Control method and control device for double-refrigeration type air conditioner and double-refrigeration type air conditioner
CN112880146A (en) Control method and control device for double-refrigeration type air conditioner and double-refrigeration type air conditioner
CN112393402A (en) Control method and control device for double-refrigeration type air conditioner and double-refrigeration type air conditioner
CN114353292A (en) Control method and control device for double-refrigeration type air conditioner and double-refrigeration type air conditioner
CN112393401A (en) Control method and control device for double-refrigeration type air conditioner and double-refrigeration type air conditioner
CN112393399A (en) Control method and control device for double-refrigeration type air conditioner and double-refrigeration type air conditioner
TWI557385B (en) Heat pump for heating and cooling
CN112880147A (en) Control method and control device for double-refrigeration type air conditioner and double-refrigeration type air conditioner
CN111442494B (en) Control method and control device for double-refrigeration type air conditioner and double-refrigeration type air conditioner
JP2003004332A (en) Multiple gas heat pump type air conditioner
KR100973328B1 (en) Unitary cascade heat pump system using geothermal heat source near the sea
CN112880145A (en) Control method and control device for double-refrigeration type air conditioner and double-refrigeration type air conditioner
CN112393398A (en) Control method and control device for double-refrigeration type air conditioner and double-refrigeration type air conditioner
CN111442496B (en) Control method and control device for double-refrigeration type air conditioner and double-refrigeration type air conditioner
CN112393403A (en) Control method and control device for double-refrigeration type air conditioner and double-refrigeration type air conditioner
CN112880247A (en) Control method and control device for double-refrigeration type air conditioner and double-refrigeration type air conditioner

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination