Control method, control device, and dual-cooling air conditioner for use in dual-cooling air conditioners

Abstract

This application relates to the field of intelligent air conditioning refrigeration technology, and discloses a control method for a dual-cooling air conditioner. The control method includes: acquiring the compressor's operating frequency when the refrigerant heat exchange system is operating in refrigerant cooling mode; performing a first pipeline on / off operation when the compressor's operating frequency is less than or equal to a set frequency; acquiring the superheat of the refrigerant heat exchange system after performing the first pipeline on / off operation; and performing a second pipeline on / off operation if the superheat meets a preset protection condition. This disclosed control method can adjust the refrigerant flow path on / off state of the two outdoor heat exchangers according to the compressor's operating frequency and superheat, so that the indoor heat exchange area of ​​the refrigerant heat exchange system is adapted to its compression performance, and can ensure the working efficiency of the desorption and cold storage mode. This application also discloses a control device for a dual-cooling air conditioner and a dual-cooling air conditioner.

Description

Technical Field

[0001] This application relates to the field of intelligent air conditioning technology, for example to a control method, control device and dual-cooling air conditioner. Background Technology

[0002] With the advancement of science and technology in the world today, the structural design and cooling performance of air conditioners have also made great progress. Based on their cooling principles, current air conditioners can be mainly divided into the following types:

[0003] (1) Refrigerant refrigeration utilizes the principle of heat absorption or release during the gas-liquid two-state change of refrigerant to expel indoor heat to the outdoor environment.

[0004] (2) Adsorption refrigeration, which utilizes the principle that the refrigerant releases and absorbs heat during the adsorption and desorption processes of the adsorbent to achieve the transfer of indoor heat.

[0005] (3) Steam jet refrigeration, which relies on the suction effect of the steam jet to make the refrigerant evaporate in the vacuum environment generated by the suction to achieve the purpose of refrigeration.

[0006] (4) Thermoelectric refrigeration, which uses the reverse reaction of the Seebeck effect—the Peltier effect—to achieve the purpose of refrigeration. The most common thermoelectric refrigeration method is semiconductor refrigeration.

[0007] In the process of implementing the embodiments of this disclosure, at least the following problems were found in the related art:

[0008] Among the aforementioned refrigeration technologies, refrigerant refrigeration and adsorption refrigeration employ different refrigeration structure designs to achieve refrigeration operations, each with its own advantages and disadvantages. Current air conditioning products generally only use one of these refrigeration structure designs, relying on a single refrigeration technology for cooling. Therefore, how to apply these two refrigeration technologies to the same air conditioner and effectively improve its performance represents a completely new approach to air conditioning product design. Summary of the Invention

[0009] To provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. This summary is not intended as a general commentary, nor is it intended to identify key / important components or describe the scope of protection of these embodiments, but rather as a prelude to the detailed description that follows.

[0010] This disclosure provides a control method, control device, and dual-cooling air conditioner to solve the technical problem that the prior art does not utilize both refrigerant refrigeration and adsorption refrigeration technologies to achieve air conditioning refrigeration.

[0011] In some embodiments, the control method for a dual-cooling air conditioner includes:

[0012] When the refrigerant heat exchange system is operating in refrigerant cooling mode, obtain the compressor's operating frequency;

[0013] When the compressor's operating frequency is less than or equal to the set frequency, the first pipeline on / off operation is executed; wherein, after the first pipeline on / off operation is executed, the refrigerant flow path of the first indoor heat exchanger is opened, and the refrigerant flow path of the second indoor heat exchanger is closed.

[0014] After performing the first pipeline on / off operation, obtain the superheat of the refrigerant heat exchange system;

[0015] If the superheat meets the preset protection conditions, the second pipeline on / off operation is executed; after the second pipeline on / off operation is executed, the refrigerant flow paths of both the first and second indoor heat exchangers are connected.

[0016] In some embodiments, the control device for a dual-cooling air conditioner includes:

[0017] The processor and the memory storing program instructions are configured to, when executing the program instructions, perform a control method for a dual-cooling air conditioner as described in some of the preceding embodiments.

[0018] In some embodiments, a dual-cooling air conditioner includes:

[0019] The refrigerant heat exchange system, the first adsorption refrigeration system, the second adsorption refrigeration system, and the control device for a dual-refrigeration air conditioner as described in some of the preceding embodiments;

[0020] The refrigerant heat exchange system includes:

[0021] The first indoor heat exchanger and the second indoor heat exchanger are connected in series via a first series pipeline.

[0022] The first outdoor heat exchanger and the second outdoor heat exchanger are connected in series via a second series pipeline.

[0023] A first indoor parallel pipeline connected to the first indoor heat exchanger includes a first indoor parallel node located in the first series pipeline and near the second indoor heat exchanger.

[0024] A second indoor parallel pipeline connected to the second indoor heat exchanger includes a second indoor parallel node located on the first series pipeline and near the first indoor heat exchanger.

[0025] A first outdoor parallel pipeline connected to a first outdoor heat exchanger, including a first outdoor parallel node located on the second series pipeline and near the second outdoor heat exchanger.

[0026] A first outdoor parallel pipeline connected to the second outdoor heat exchanger includes a first outdoor parallel node located in the second series pipeline and near the first outdoor heat exchanger.

[0027] Among them, the first indoor parallel node and the second indoor parallel node are connected in a way that can be switched on and off in the first series pipeline; the first outdoor parallel node and the second outdoor parallel node are connected in a way that can be switched on and off in the second series pipeline.

[0028] The first adsorption refrigeration system includes: a first evaporation section disposed at a first indoor heat exchanger and a first adsorption section disposed at a first outdoor heat exchanger, wherein the first evaporation section and the first adsorption section are connected in a switchable manner.

[0029] The second adsorption refrigeration system includes a second evaporation section disposed at the second indoor heat exchanger and a second adsorption section disposed at the second outdoor heat exchanger, wherein the second evaporation section and the second adsorption section are connected in a switchable manner.

[0030] The control method, apparatus, and dual-cooling air conditioner provided in this disclosure can achieve the following technical effects:

[0031] The control method for dual-cooling air conditioners provided in this disclosure can adjust the on / off state of the refrigerant flow path of the two outdoor heat exchangers according to the compressor's operating frequency and superheat when the refrigerant heat exchange system is operating in refrigerant cooling mode, so that the indoor heat exchange area of ​​the refrigerant heat exchange system is adapted to its compression performance; and can adjust the desorption and cold storage state of the two corresponding adsorption refrigeration systems so that the number of adsorption refrigeration systems in operation is adapted to the current state of the refrigerant heat exchange system, thereby ensuring the working efficiency of the desorption and cold storage mode; this disclosure does not simply superimpose two refrigeration systems in the same air conditioner, but cleverly combines two refrigeration structures and the two processes of refrigerant cooling and desorption and cold storage by fully considering the refrigeration principles of both, which not only simplifies the product structure of the combined air conditioner, but also effectively improves the overall cooling performance of the air conditioner.

[0032] The above general description and the description below are exemplary and illustrative only and are not intended to limit this application. Attached Figure Description

[0033] One or more embodiments are illustrated by way of example with reference to the accompanying drawings. These illustrations and drawings do not constitute a limitation on the embodiments. Elements having the same reference numerals in the drawings are shown as similar elements. The drawings are not to be scaled. And wherein:

[0034] Figure 1 This is a schematic diagram of the structure of a dual-cooling air conditioner provided in an embodiment of this disclosure;

[0035] Figure 2This is a schematic flowchart of a control method for a dual-cooling air conditioner provided in an embodiment of this disclosure;

[0036] Figure 3 This is a schematic diagram of the structure of the control device for a dual-cooling air conditioner provided in an embodiment of this disclosure. Detailed Implementation

[0037] To provide a more detailed understanding of the features and technical content of the embodiments of this disclosure, the implementation of the embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. The accompanying drawings are for illustrative purposes only and are not intended to limit the embodiments of this disclosure. In the following technical description, for ease of explanation, several details are used to provide a full understanding of the disclosed embodiments. However, one or more embodiments may still be implemented without these details. In other cases, well-known structures and devices may be simplified in their depiction to simplify the drawings.

[0038] Figure 1 This is a schematic diagram of the structure of a dual-cooling air conditioner provided in an embodiment of this disclosure.

[0039] like Figure 1 As shown in the illustration, this disclosure provides a dual-cooling air conditioner, including a refrigerant heat exchange system and multiple adsorption refrigeration systems. The refrigerant heat exchange system can be a single-cooling refrigerant heat exchange system, which can be used for cooling, dehumidifying, and other functions of the indoor environment, or it can be a cooling-heating refrigerant heat exchange system, which can be used for cooling, dehumidifying, and heating, among other functions of the indoor environment. The adsorption refrigeration systems are used to cool the indoor environment when operating in adsorption refrigeration mode.

[0040] In some optional embodiments, taking a cooling and heating refrigerant heat exchange system as an example, the refrigerant heat exchange system mainly includes components such as an indoor heat exchanger, an outdoor heat exchanger, a compressor 13, and a throttling device 14; the indoor heat exchanger, the outdoor heat exchanger, the throttling device 14, and the compressor 13 are connected by refrigerant pipelines to form a refrigerant circulation loop, and the refrigerant flows along the flow direction set by different operating modes through the refrigerant circulation loop to realize its different operating mode functions.

[0041] In this embodiment, the indoor heat exchanger includes at least a first indoor heat exchanger 111 and a second indoor heat exchanger 121 connected in series via a first series pipe 311, and the refrigerant flows through the two indoor heat exchangers sequentially via the first series pipe 311; the outdoor heat exchanger includes at least a first outdoor heat exchanger 112 and a second outdoor heat exchanger 122 connected in series via a second series pipe 312, and the refrigerant flows through the two outdoor heat exchangers sequentially via the second series pipe 312.

[0042] Here, the dual-cooling air conditioner includes an indoor unit and an outdoor unit. The first indoor heat exchanger 111 and the second indoor heat exchanger 121 are installed in the indoor unit, which is also equipped with an indoor fan for driving indoor air to exchange heat with the indoor heat exchangers. The first outdoor heat exchanger 112, the second outdoor heat exchanger 122, and the compressor 13 are installed in the outdoor unit, which is also equipped with an outdoor fan for outdoor air to exchange heat with the outdoor heat exchangers. The two outdoor heat exchangers are located on the air inlet side of the outdoor fan.

[0043] In the embodiments, the operating modes of the refrigerant heat exchange system of the dual-cooling air conditioner include cooling mode, dehumidification mode and heating mode. The cooling mode is generally used in high-temperature conditions in summer to reduce the indoor ambient temperature; the dehumidification mode is also generally used in high-temperature and high-humidity conditions in summer to reduce the indoor ambient humidity; and the heating mode is generally used in low-temperature conditions in winter to increase the indoor ambient temperature.

[0044] When the refrigerant heat exchange system operates in cooling mode, the refrigerant flow is set so that the high-temperature refrigerant discharged from the compressor 13 flows through the first outdoor heat exchanger 112 and the second outdoor heat exchanger 122, exchanging heat with the outdoor environment respectively. Then, it flows into the second indoor heat exchanger 121 and the first indoor heat exchanger 111, exchanging heat with the indoor environment respectively. Finally, the refrigerant flows back to the compressor 13 for compression again. During this process, the refrigerant flowing through the two outdoor heat exchangers releases heat to the outdoor environment, and the refrigerant flowing through the two indoor heat exchangers absorbs heat from the indoor environment. Through the circulation of the refrigerant in the refrigerant circulation loop, the heat in the room can be continuously discharged to the outdoor environment, thereby achieving the purpose of cooling the indoor environment by reducing the temperature.

[0045] When the refrigerant heat exchange system is operating in dehumidification mode, the refrigerant flow direction is the same as that in cooling mode. The difference is that when the air conditioner is operating in dehumidification mode, by adjusting some operating parameters, such as reducing the flow opening of the throttling device 14, the temperature and pressure of the refrigerant flowing into the two indoor heat exchangers can be lowered. This allows the two indoor heat exchangers to reach a lower temperature as the refrigerant absorbs heat and evaporates. When the surface temperature of the two indoor heat exchangers is lower than the dew point temperature of the current operating condition, the water vapor in the indoor air flowing through the indoor heat exchangers can condense on the indoor heat exchangers, thereby achieving the purpose of reducing indoor air humidity.

[0046] When operating in heating mode, the refrigerant flow is set so that the high-temperature refrigerant discharged from the compressor 13 first 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 the refrigerant flows back to the compressor 13 to re-compress. During this process, the refrigerant flowing through the two indoor heat exchangers releases heat to the indoor environment, and the refrigerant flowing through the two outdoor heat exchangers absorbs heat from the outdoor environment. Through the circulation of the refrigerant in the refrigerant circulation loop, heat from the outdoors can be continuously released into the indoor environment, thereby achieving the purpose of raising the indoor temperature.

[0047] In some optional embodiments, the various components of the refrigerant heat exchange system are assembled and connected using existing connection structures for refrigerant heat exchange systems, which will not be elaborated here.

[0048] In some optional embodiments, the refrigerant heat exchange system further includes a first indoor parallel pipe 321, which is connected in parallel to the first indoor heat exchanger 111. Specifically, the inlet and outlet ports of the first indoor parallel pipe 321 are connected to the corresponding inlet and outlet ports of the first indoor heat exchanger 111. The parallel node includes a first indoor parallel node located on the first series pipe 311 and near the second indoor heat exchanger 121. Refrigerant can flow from both the first indoor heat exchange path defined by the first indoor heat exchanger 111 and the first indoor parallel pipe 321.

[0049] The first indoor parallel pipeline 321 is equipped with a first indoor parallel valve 431, which can be used to control the on / off state and flow regulation of the first indoor parallel pipeline 321.

[0050] The refrigerant heat exchanger system also includes a second indoor parallel pipe 322, which is connected in parallel to the second indoor heat exchanger 121. Specifically, the inlet and outlet liquid ports of the second indoor parallel pipe 322 are connected to the corresponding inlet and outlet liquid ports of the second indoor heat exchanger 121. The parallel connection includes a second indoor parallel node located on the first series pipe 311 and near the first indoor heat exchanger 111. Refrigerant can flow from the second indoor heat exchange path defined by the second indoor heat exchanger 121 and the second indoor parallel pipe 322, respectively.

[0051] The second indoor parallel pipeline 322 is equipped with a second indoor parallel valve 432, which can be used to control the on / off state and flow regulation of the second indoor parallel pipeline 322.

[0052] Here, the first indoor parallel node and the second indoor parallel node can be connected on and off in the first series pipe 311; then by controlling the on and off state of the first series pipe 311, the number of indoor heat exchangers through which the refrigerant flows can be controlled, thereby affecting the state of the adsorption medium in the evaporation section of the indoor heat exchanger.

[0053] For example, when the refrigerant heat exchange system is operating in cooling mode, the refrigerant flows through the two indoor heat exchangers in the following order: first through the second indoor heat exchanger 121, and then through the first indoor heat exchanger 111. When the first series pipe 311 is disconnected, the second indoor parallel valve 432 is disconnected, and the first indoor parallel valve 431 is open, the refrigerant flows normally through the second indoor heat exchanger 121, and the outflowing refrigerant returns to the compressor via the first indoor parallel pipe 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 from the surrounding environment.

[0054] When the first series pipe 311 is disconnected, the second indoor parallel valve 432 is open, and the first indoor parallel valve 431 is closed, the refrigerant does not flow through the second indoor heat exchanger 121. Instead, the refrigerant flows into the first indoor heat exchanger 111 through the second indoor parallel pipe 322. At this time, the first indoor heat exchanger 111 does not absorb heat from the surrounding environment.

[0055] When the first series pipeline 311 is in the conducting state, the first indoor parallel valve 431 is in the disconnected state, and the second indoor parallel valve 432 is in the disconnected state, the refrigerant flows through the second indoor heat exchanger 121 and the first indoor heat exchanger 111 in sequence. At this time, both the first indoor heat exchanger 111 and the second indoor heat exchanger 121 absorb heat from the surrounding environment.

[0056] Optionally, a first series valve 41 is provided on the first series pipeline 311, which can be used to control the on / off state of the first series pipeline 311 and regulate the flow.

[0057] Furthermore, the refrigerant heat exchange system also includes a first outdoor parallel pipe 331, which is connected in parallel to the first outdoor heat exchanger 112. Specifically, the inlet and outlet liquid ports of the first outdoor parallel pipe 331 are connected to the corresponding inlet and outlet liquid ports of the first outdoor heat exchanger 112. The parallel connection node includes a first outdoor parallel node located on the second series pipe 312 and near the second outdoor heat exchanger 122. The refrigerant can flow from the first outdoor heat exchange path defined by the first outdoor heat exchanger 112 and the first outdoor parallel pipe 331, respectively.

[0058] The first outdoor parallel pipeline 331 is equipped with a first outdoor parallel valve 441, which can be used to control the on / off state and flow regulation of the first outdoor parallel pipeline 331.

[0059] The refrigerant heat exchanger system also includes a second outdoor parallel pipe 332, which is connected in parallel to the second outdoor heat exchanger 122. Specifically, the inlet and outlet liquid ports of the second outdoor parallel pipe 332 are connected to the corresponding inlet and outlet liquid ports of the second outdoor heat exchanger 122. The parallel connection includes a second outdoor parallel node located on the first series pipe 311 and near the first outdoor heat exchanger 112. Refrigerant can flow from the second outdoor heat exchange path defined by the second outdoor heat exchanger 122 and the second outdoor parallel pipe 332, respectively.

[0060] The second outdoor parallel pipeline 332 is equipped with a second outdoor parallel valve 442, which can be used to control the on / off state and flow regulation of the second outdoor parallel pipeline 332.

[0061] Here, the first outdoor parallel node and the second outdoor parallel node can be connected on and off in the second series pipeline 312; optionally, a second series valve 42 is provided on the second series pipeline 312, which can be used to control the on and off state of the second series pipeline 312 and to regulate the flow.

[0062] The refrigerant flow patterns of the first outdoor heat exchanger 112 and the second outdoor heat exchanger 122 under the different valve on / off states can be referred to the refrigerant flow patterns of the two indoor heat exchangers mentioned above, and will not be repeated here.

[0063] In some optional embodiments, the dual-cooling air conditioner is provided with two adsorption refrigeration systems, including a first adsorption refrigeration system and a second adsorption refrigeration system, both of which are capable of performing both desorption cold storage and adsorption cold storage processes.

[0064] The first adsorption refrigeration system includes a first adsorption section 21 and a first evaporation section 231. The first adsorption section 21 is located at the first outdoor heat exchanger 112 of the refrigerant heat exchange system and is filled with an adsorbent. It is used to absorb heat from the first outdoor heat exchanger 112 and release the adsorbent medium during the desorption cold storage stage, and to adsorb the adsorbent medium and release heat during the adsorption refrigeration stage. The first evaporation section 231 is located at the first indoor heat exchanger 111 on the indoor side. It is used to store the liquid adsorbent medium from the first adsorption section 21 during the desorption cold storage stage, and to absorb heat from the indoor environment and transport the vaporized adsorbent medium to the first adsorption section 21 during the adsorption refrigeration stage.

[0065] In some embodiments, the first adsorption section 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, the heat dissipated by the first outdoor heat exchanger 112 can first flow through the first adsorption section 21 sandwiched between the outdoor fan and the first outdoor heat exchanger 112 under the driving action of the outdoor fan, so that the first adsorption section 21 can absorb a large amount of heat for desorption and cold storage during the desorption and cold storage stage; at the same time, the first adsorption section 21 is also located on the air inlet side of the outdoor fan, so the heat released by the first adsorption section 21 can also be dissipated to the outdoor environment by the driving action of the outdoor fan during the adsorption and cooling stage.

[0066] Optionally, the first outdoor heat exchanger 112 has a plate-like structure, and its cross-sectional profile is in the form of semi-enclosing the 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 this embodiment, the overall shape of the first adsorption part 21 is adapted to the first outdoor heat exchanger 112, and it is also designed to semi-enclose the outdoor fan and fits the first outdoor heat exchanger 112, thereby effectively increasing the heat exchange area between the first adsorption part 21 and the first outdoor heat exchanger 112 and improving the waste heat utilization efficiency of the first outdoor heat exchanger 112.

[0067] Optionally, the first adsorption section 21 of the first adsorption refrigeration system is arranged along the transverse or longitudinal direction of the outdoor heat exchanger, and the first adsorption section 21 is designed to be adapted to the corresponding part of the outdoor heat exchanger to ensure the heat exchange efficiency of both.

[0068] The second adsorption refrigeration system includes a second adsorption section 22 and a second evaporation section 232. The second adsorption section 22 is located at the second outdoor heat exchanger 122 of the refrigerant heat exchange system and is filled with an adsorbent. It is used to absorb heat from the second outdoor heat exchanger 122 and release the adsorbent medium during the desorption cold storage stage, and to adsorb the adsorbent medium and release heat during the adsorption refrigeration stage. The second evaporation section 232 is located at the second indoor heat exchanger 121 on the indoor side. It is used to store the liquid adsorbent medium from the second adsorption section 22 during the desorption cold storage stage, and to absorb heat from the indoor environment and transport the vaporized adsorbent medium to the second adsorption section 22 during the adsorption refrigeration stage.

[0069] Optionally, the structural design and matching form of the second adsorption section 22 and the second outdoor heat exchanger 122 can adopt the same technical solution as the first adsorption section 21 and the first outdoor heat exchanger 112 in the previous embodiment, which will not be described in detail here.

[0070] Optionally, a fourth adsorption medium transport flow path is constructed between the first adsorption section 21 and the second adsorption section 22; in this way, during the desorption and adsorption cooling stages, the gaseous adsorption medium can flow between the first adsorption section 21 and the second adsorption section 22 via the fourth adsorption medium flow path, thereby improving the overall desorption and cooling effect and the adsorption cooling effect of the adsorption refrigeration system.

[0071] Optionally, the first evaporation section 231 and the second evaporation section 232 are plate-fin structures. The plate-fin structure can effectively improve the heat exchange effect between the adsorbent medium in the evaporation section and the indoor environment during the desorption and cold storage stage, thereby enhancing the heat absorption and cooling capacity. At the same time, the first evaporation section 231 and the second evaporation section 232 have flow paths for the adsorbent medium, and these flow paths are connected to the adsorbent medium transport flow paths.

[0072] In some optional embodiments, the indoor heat exchanger has a longitudinal section with a zigzag shape and a semi-encircling structure around the indoor fan. Therefore, in order to improve the heat exchange effect between the two evaporation sections and the indoor environment, in this embodiment, the overall shape of the two evaporation sections is adapted to the indoor heat exchanger and is also designed to semi-encircle the indoor fan and fit closely to the indoor heat exchanger, so as to increase the heat exchange area between the evaporation section and the airflow flowing through the indoor unit and improve the heat absorption and cooling capacity.

[0073] Here, in order to enable the evaporation sections of the two adsorption refrigeration systems to absorb heat from the indoor environment evenly, the first evaporation section 231 and the second evaporation section 232 of the two adsorption refrigeration systems are also arranged side by side; optionally, the first evaporation section 231 and the second evaporation section 232 are arranged side by side along the transverse or longitudinal direction of the indoor heat exchanger, and the first evaporation section 231 and the second evaporation section 232 are designed to be adapted to the corresponding parts of the indoor heat exchanger.

[0074] Optionally, a third adsorption medium transport path is constructed between the first evaporation section 231 and the second evaporation section 232; in this way, during the desorption and adsorption cold storage stages, the liquid and gaseous adsorption media can flow between the first evaporation section 231 and the second evaporation section 232, thereby improving the overall desorption and cold storage effect and the adsorption and refrigeration effect of the adsorption refrigeration system.

[0075] In addition, the first adsorption refrigeration system also includes a first intermediate heat dissipation section 24; wherein, the first intermediate heat dissipation section 24 is disposed on the first adsorption medium conveying flow path, and can be used to receive the gaseous adsorption medium conveyed by the first adsorption section 21 during the desorption and cold storage stage and dissipate heat and condense it to liquefy at least part of the gaseous adsorption medium, and then continue to convey the liquefied adsorption medium to the first evaporation section 231 for storage.

[0076] Here, the first intermediate heat dissipation section 24 is located on the outdoor side, and it achieves heat dissipation and condensation of the adsorbent medium through heat exchange with the outdoor environment. When the refrigerant heat exchange system is running in refrigerant cooling mode, the outdoor heat exchanger discharges heat to the outside. Due to its temperature, the temperature of the first adsorption section 21 is generally higher than the outdoor environment temperature. Therefore, after the gaseous adsorbent medium released by the first adsorption section 21 under the influence of high temperature heat flows into the first intermediate heat dissipation section 24, the heat is dissipated to the outdoor environment, thereby causing at least part of the gaseous adsorbent medium to recondense into liquid.

[0077] Meanwhile, the second adsorption refrigeration system also includes a second intermediate heat dissipation section 25; wherein, the second intermediate heat dissipation section 25 is disposed on the second adsorption medium conveying flow path, and can be used to receive the gaseous adsorption medium conveyed by the second adsorption section 22 during the desorption and cold storage stage and dissipate heat and condense it to liquefy at least part of the gaseous adsorption medium, and then continue to convey the liquefied adsorption medium to the second evaporation section 232 for storage.

[0078] Here, the second intermediate heat dissipation section 25 is also located on the outdoor side. It achieves heat dissipation and condensation of the adsorbent medium through heat exchange with the outdoor environment. When the refrigerant heat exchange system is running in refrigerant refrigeration mode, the compressor 13 discharges heat to the outside. Due to its temperature, the temperature of the second adsorption section 22 is generally higher than the outdoor ambient temperature. Therefore, after the gaseous adsorbent medium released by the second adsorption section 22 under the influence of high temperature flows into the second intermediate heat dissipation section 25, the heat is dissipated to the outdoor environment, thereby causing at least part of the gaseous adsorbent medium to recondense into a liquid state.

[0079] Optionally, the first intermediate heat dissipation section 24 and the second intermediate heat dissipation section 25 are horizontal flow heat sinks.

[0080] In some embodiments, the first intermediate heat dissipation section 24 and the second intermediate heat dissipation section 25 are disposed on the back plate, side plate or bottom plate of the outdoor unit of the refrigerant heat exchange system and are located away from the air outlet of the outdoor unit, so as to avoid the high temperature air discharged from the outdoor unit from affecting the heat dissipation effect of the intermediate heat dissipation section.

[0081] Preferably, the first intermediate heat dissipation section 24 and the second intermediate heat dissipation section 25 are located on the base plate. In this configuration, the outdoor unit can shield the two intermediate heat dissipation sections from sunlight, thereby providing a more suitable heat dissipation temperature environment for the two intermediate heat dissipation sections.

[0082] Alternatively, since the outdoor unit's back panel is equipped with an air inlet, the first intermediate heat dissipation section 24 and the second intermediate heat dissipation section 25 can also be located near the air inlet, thereby utilizing the driving action of the outdoor fan to accelerate the flow of air around the intermediate heat dissipation section, thereby improving the heat dissipation effect.

[0083] In this embodiment, the first adsorption medium transport path is constructed between the first adsorption section 21 and the first evaporation section 231, and the adsorption medium can flow between the first adsorption section 21, the first intermediate heat dissipation section 24 and the first evaporation section 231 via the first adsorption medium transport path.

[0084] Similarly, the second adsorption medium transport path described above is constructed between the second adsorption section 22 and the second evaporation section 232, through which the adsorption medium can flow between the second adsorption section 22, the second intermediate heat dissipation section 25 and the second evaporation section 232.

[0085] Here, to facilitate the explanation of the working method of the adsorption refrigeration system, the first adsorption refrigeration system is taken as an example. The first adsorption medium conveying flow path includes a first desorption flow path and a first adsorption flow path. The first desorption flow path is the flow path used for conveying the adsorption medium in the desorption and cold storage stage, and the first adsorption flow path is the flow rate used for conveying the adsorption medium in the adsorption and cold storage stage.

[0086] In the first desorption flow path, the first adsorption section 21, the first intermediate heat dissipation section 24 and the first evaporation section 231 are connected in series, so that after the adsorption medium flows out of the first adsorption section 21 during the desorption and cold storage stage, it enters the first intermediate heat dissipation section 24 and the first evaporation section 231 in sequence, and is finally stored in the first evaporation section 231 in a liquid form.

[0087] Optionally, a one-way valve is provided in the first desorption flow path. The one-way valve limits the adsorption medium to be transported only in the direction of "first adsorption section 21 → first intermediate heat dissipation section 24 → first evaporation section 231". Here, the one-way valve can be provided in the flow path between the first adsorption section 21 and the first intermediate heat dissipation section 24, or it can be provided in the flow path between the first intermediate heat dissipation section 24 and the first evaporation section 231.

[0088] In the first adsorption flow path, the first evaporation section 231 and the first adsorption section 21 are connected in series, so that after the adsorption medium flows out of the first evaporation section 231 during the adsorption cooling stage, it enters the first adsorption section 21 through the first adsorption flow path and is re-adsorbed by the adsorbent in the first adsorption section 21.

[0089] Optionally, a one-way valve is provided in the first adsorption flow path, which limits the adsorption medium to be transported only in the direction of "first evaporation section 231 → first adsorption section 21".

[0090] Optionally, the first desorption flow path can be set as the main flow path, and the first adsorption flow path can be set in parallel with the first intermediate heat dissipation part 24. Therefore, the non-parallel flow path section of the first desorption flow path near the first adsorption part 21 can also be used for the transport of the adsorption medium during the adsorption cooling stage.

[0091] Similarly, a second adsorption medium transport path is constructed between the second adsorption section 22 and the second evaporation section 232 of the second adsorption refrigeration system, and the adsorption medium can flow between the second adsorption section 22, the second intermediate heat dissipation section 25 and the second evaporation section 232 via the second adsorption medium transport path.

[0092] Here, the second adsorption medium transport path includes a second desorption flow path and a second adsorption flow path, wherein the second desorption flow path is the flow path used for transporting the adsorption medium during the desorption and cold storage stage, and the second adsorption flow path is the flow rate used for transporting the adsorption medium during the adsorption and cold storage stage.

[0093] Here, the configuration of the second adsorption medium transport path can refer to the first adsorption medium transport path in the previous embodiment, and will not be described again here.

[0094] 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 to control 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 to control 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 to control 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 to control the on / off state and flow rate of the fourth adsorption medium conveying flow path.

[0095] Here, the first control valve 26 and the second control valve 27 are located on the non-parallel flow path section of the desorption flow path near the corresponding adsorption section in the above embodiment, so that the flow on / off control of the two stages of desorption cold storage and adsorption refrigeration of the adsorption section can be achieved by using only one control valve.

[0096] Alternatively, a control valve can be installed on each of the desorption and adsorption paths of each adsorption medium transport path to control the on / off state and flow rate of the corresponding path.

[0097] The following describes the cooperative operation of the adsorption refrigeration system and the refrigerant heat exchange system in the embodiments of this disclosure:

[0098] In this embodiment, the operating modes of the adsorption refrigeration system mainly include desorption cold storage mode and adsorption refrigeration mode. The desorption cold storage mode corresponds to the desorption cold storage stage in the previous embodiment, which is mainly used to accumulate "cold energy". The adsorption refrigeration mode corresponds to the adsorption refrigeration stage in the previous embodiment, which is mainly used to release the "cold energy" accumulated in the desorption cold storage stage, thereby achieving cooling of the indoor side where it is located.

[0099] Here, the adsorption refrigeration system operates in desorption cold storage mode under the premise that the refrigerant heat exchange system is operating in refrigerant refrigeration mode or refrigerant dehumidification mode. Here, when the refrigerant heat exchange system is operating in refrigerant refrigeration mode, the first outdoor heat exchanger 112 and the second outdoor heat exchanger 122 simultaneously release heat. After the heat is transferred to the first adsorption section 21 and the second adsorption section 22, the adsorbent medium adsorbed by the adsorbent in the two adsorption sections absorbs heat and desorbs into gaseous adsorbent medium. Then, it enters its corresponding intermediate heat dissipation section through the desorption flow path for condensation. The condensed liquid adsorbent medium enters the first evaporation section 231 and the second evaporation section 232 respectively to serve as the stored "cold energy".

[0100] The adsorption refrigeration system operates in adsorption refrigeration mode only when the refrigerant heat exchange system is not in refrigerant refrigeration mode or refrigerant dehumidification mode. Here, when the refrigerant heat exchange system is not in refrigerant cooling mode or refrigerant dehumidification mode, both the first outdoor heat exchanger 112 and the second outdoor heat exchanger 122 stop working and do not release heat to the outside. Therefore, the temperature of the first adsorption section 21 is lower than that of the first outdoor heat exchanger 112 when it releases heat, and the temperature of the second adsorption section 22 is also lower than that of the second outdoor heat exchanger 122 when it releases heat. This causes the adsorbent in the two adsorption sections to begin to re-adsorb the adsorption medium. Under the combined influence of various factors such as the concentration of the adsorption medium, pressure, and indoor ambient temperature, the liquid adsorption medium in the first evaporation section 231 and the second evaporation section 232 begins to absorb heat and evaporate into a gaseous adsorption medium, and flows back to the first adsorption section 21 and the second adsorption section 22 through their respective adsorption flow paths. In this process, the adsorption medium absorbs heat from the indoor environment, and after the adsorption medium is re-adsorbed by the adsorbent, it releases the heat to the outdoor environment where the adsorption section is located. Therefore, by the adsorption medium flow that is reversed compared to the desorption and cold storage stage, adsorption cooling and temperature reduction of the indoor environment can be achieved.

[0101] Here, in both the desorption cold storage mode and the adsorption refrigeration mode, only one of the first adsorption section 21 and the second adsorption section 22 may be activated, or both of the first adsorption section 21 and the second adsorption section 22 may be activated. Similarly, only one of the first evaporation section 231 and the second evaporation section 232 may be activated, or both of the first evaporation section 231 and the second evaporation section 232 may be activated.

[0102] For example, in the adsorption refrigeration mode, one control method is to activate only the first adsorption section 21, while the evaporation section can be controlled to activate only the first evaporation section 231 (the third adsorption medium transport path between the first evaporation section 231 and the second evaporation section 232 is disconnected), or activate both the first evaporation section 231 and the second evaporation section 232 (the third adsorption medium transport path between the first evaporation section 231 and the second evaporation section 232 is connected). In this way, the heat absorption rate can be changed by changing the number of activated evaporation sections.

[0103] Figure 2 This is a schematic flowchart of a control method for a dual-cooling air conditioner provided in an embodiment of this disclosure.

[0104] like Figure 2 As shown in the embodiments of this disclosure, a control method for a dual-cooling air conditioner is provided. Optionally, this control method can be applied to, for example... Figure 1 The dual-cooling air conditioner shown in the embodiment; this control method can be used to solve the problem in the prior art that it does not utilize both refrigerant refrigeration and adsorption refrigeration technologies to achieve air conditioning cooling; in the embodiment, the main process steps of the control method include:

[0105] S201. When the refrigerant heat exchange system is running in refrigerant refrigeration mode, obtain the compressor's operating frequency;

[0106] Optionally, during high-temperature summer operation, when a dual-cooling air conditioner is turned on, the refrigerant heat exchange system defaults to operating in refrigerant cooling mode. In this process, the indoor heat exchanger of the refrigerant heat exchange system begins to absorb heat from the indoor environment to reduce the indoor temperature. At the same time, the heat absorbed by the indoor heat exchanger is transported 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. At this time, the temperature of the outdoor heat exchanger is generally higher than the temperature of the outdoor environment.

[0107] Here, the operating frequency of the compressor in the refrigerant heat exchange system is one of the conventional operating parameters of existing air conditioning products. Since the method of obtaining the compressor's operating frequency does not involve the innovation of this application, the method of obtaining the compressor's operating frequency can refer to relevant technologies and will not be elaborated here.

[0108] S202. When the compressor's operating frequency is less than or equal to the set frequency, perform the first pipeline on / off operation.

[0109] In this embodiment, the set frequency is a critical parameter used to measure the amount of refrigerant compressed by the compressor, and can also be regarded as a critical parameter used to characterize the current cooling capacity of the refrigerant heat exchange system. Here, if the current operating frequency of the compressor is greater than the set frequency, it indicates that the compressor is compressing a large amount of refrigerant and the cooling capacity of the refrigerant heat exchange system is high; while if the current operating frequency of the compressor is less than or equal to the set frequency, it indicates that the compressor is compressing a small amount of refrigerant and the cooling capacity of the refrigerant heat exchange system is low.

[0110] Therefore, in this embodiment of the present disclosure, the specific method of selecting the on / off operation of the pipeline is controlled by comparing the numerical value between the operating frequency of the compressor and the set frequency, thereby changing the on / off relationship of the refrigerant flow path of the two indoor heat exchangers, so as to adjust the heat exchange area between the indoor heat exchangers and the indoor environment, so that it can be adapted to the amount of refrigerant compressed by the compressor and the cooling capacity of the refrigerant heat exchange system.

[0111] Optionally, the frequency can be set to meet the following conditions:

[0112] 0.45f max ≤f 设定 <0.55f max ;

[0113] Among them, f 设定 To set the frequency; f max This refers to the maximum operating frequency of the compressor. The specific value needs to be determined based on the compressor model, and this invention does not impose any specific limitations.

[0114] In this embodiment, when the compressor's operating frequency is less than or equal to the set frequency, since the amount of refrigerant compressed by the compressor is small and the corresponding cooling capacity of the refrigerant heat exchange system is low, only one of the two indoor heat exchangers can be activated to exchange heat with the indoor environment, in order to adapt to the low demand state of the refrigerant heat exchange system with a small amount of refrigerant for external heat dissipation.

[0115] Here, after performing the first pipeline on / off operation, the refrigerant flow path of the first indoor heat exchanger is opened and the refrigerant flow path of the second indoor heat exchanger is closed. In this way, the technical purpose of heat exchange between a single outdoor heat exchanger and the indoor environment can be achieved through the first indoor heat exchanger with the refrigerant flow path open.

[0116] In this embodiment, performing the first pipeline on / off operation includes: disconnecting the first indoor parallel pipeline, keeping the second indoor parallel pipeline connected, and disconnecting the first series pipeline between the first outdoor parallel node and the second outdoor parallel node. Specifically, when the first indoor parallel pipeline is disconnected, refrigerant can only flow through the first indoor heat exchanger; while when the second indoor parallel pipeline remains connected and the first series pipeline between the first indoor parallel node and the second indoor parallel node is disconnected, the refrigerant cannot flow through the second indoor heat exchanger, but instead flows through the second indoor parallel pipeline.

[0117] Each of the first indoor parallel pipeline, the second indoor parallel pipeline, and the first series pipeline is equipped with a separate control valve, and each control valve can be used to control the on / off state of its respective pipeline. Therefore, in this embodiment, this can be achieved by controlling the closing of the control valves on the first indoor parallel pipeline and the first series pipeline, and opening the control valve on the second indoor parallel pipeline.

[0118] Optionally, when the compressor's operating frequency is less than or equal to the set frequency, the first pipeline on / off operation is not performed. At this time, both the first indoor heat exchanger and the second indoor heat exchanger are in a conducting state. At this time, the first indoor parallel pipeline is disconnected, the second indoor parallel pipeline is disconnected, and the first series pipeline between the first indoor parallel node and the second indoor parallel node remains connected.

[0119] S203. After performing the first pipeline on / off operation, obtain the superheat of the refrigerant heat exchange system;

[0120] In this embodiment, the superheat of the refrigerant heat exchange system is a parameter used to measure whether the first indoor heat exchanger can meet the refrigerant heat exchange efficiency requirements. A low superheat indicates that the refrigerant absorbs less heat, the heat exchange efficiency between the refrigerant and the indoor environment is low due to the refrigerant only passing through the first indoor heat exchanger, and the heat exchange area is insufficient. Conversely, a high superheat indicates that the refrigerant absorbs more heat, and the amount of refrigerant used for heat exchange within the refrigerant heat exchange system is insufficient. Therefore, in this embodiment, the number of activated indoor heat exchangers is readjusted based on the superheat of the refrigerant heat exchange system to achieve more precise control over the number of activated indoor heat exchangers, ensuring that it is matched to the heat dissipation capacity of the refrigerant.

[0121] Optionally, the step of obtaining the superheat of the refrigerant heat exchange system in step S203 includes: obtaining the compressor discharge temperature and the inlet refrigerant temperature of the first indoor heat exchanger; and calculating the superheat based on the discharge temperature and the inlet refrigerant temperature.

[0122] For example, the compressor's discharge temperature T is detected. 排气 If the inlet refrigerant temperature T1 of the first indoor heat exchanger is given, the superheat can be calculated using the following formula:

[0123] △T=T 排气 -T1;

[0124] Where △T represents superheat.

[0125] Here, the refrigerant heat exchange system has a temperature sensor installed at the compressor's discharge end and the liquid inlet end of the first indoor heat exchanger, respectively. The two temperature sensors can detect the compressor's discharge temperature and the liquid refrigerant temperature of the first indoor heat exchanger.

[0126] S204. If the overheating meets the preset protection conditions, then perform the second pipeline on / off operation.

[0127] Optional, preset protection conditions include: the superheat of the refrigerant heat exchange system is less than or equal to a preset superheat threshold.

[0128] If the superheat meets the preset protection conditions, it indicates that the first indoor heat exchanger cannot meet the heat exchange requirements of the current refrigerant state. Therefore, the control executes the second pipeline on / off operation, so that the refrigerant flow paths of both the first and second indoor heat exchangers are connected. Thus, the cooling effect of the indoor environment is achieved by using the two indoor heat exchangers through the second pipeline on / off operation.

[0129] In an optional embodiment, performing the second pipeline on / off operation includes: disconnecting the first indoor parallel pipeline, disconnecting the second indoor parallel pipeline, and keeping the first series pipeline between the first and second indoor parallel nodes connected. Here, when the first and second indoor parallel pipelines are disconnected, the refrigerant cannot flow through these two indoor parallel pipelines; simultaneously, the first series pipeline between the first and second indoor parallel nodes remains connected, allowing the refrigerant to pass sequentially through the two indoor heat exchangers and exchange heat with the indoor environment in both heat exchangers. This enables the refrigerant to absorb heat and cool more fully, effectively improving heat exchange efficiency and ensuring the cooling performance of the refrigerant heat exchange system.

[0130] In this embodiment, this can be achieved by controlling the control valves on the first indoor parallel pipeline and the second indoor parallel pipeline to close, and the control valve on the first series pipeline to open.

[0131] The control method for dual-cooling air conditioners provided in this disclosure can adjust the on / off state of the refrigerant flow path of the two indoor heat exchangers according to the operating frequency of the compressor when the refrigerant heat exchange system is operating in refrigerant cooling mode, so that the indoor heat exchange area of ​​the refrigerant heat exchange system is adapted to its compression performance.

[0132] In some optional embodiments, the control method for a dual-cooling air conditioner disclosed herein further includes: if the superheat meets a preset protection condition, controlling the first adsorption refrigeration system and the second adsorption refrigeration system to enter the desorption cold storage mode.

[0133] In this embodiment, when the superheat meets the preset protection conditions, the control executes the second pipeline on / off operation. Both the first indoor heat exchanger and the second indoor heat exchanger have refrigerant fluid, and at the same time, the first outdoor heat exchanger and the second outdoor heat exchanger dissipate heat to the outside. At this time, the control is executed to enter the desorption cold storage mode for both the first adsorption refrigeration system and the second adsorption refrigeration system to store cold using the two adsorption refrigeration systems.

[0134] In this embodiment, when the refrigerant heat exchange system is operating in refrigerant refrigeration mode, the adsorption refrigeration system can operate in desorption cold storage mode to store cold. The outdoor heat exchanger discharges heat to its surrounding environment, causing the ambient temperature to rise. Therefore, the adsorption medium in the adsorption section of the adsorption refrigeration system located near the outdoor heat exchanger absorbs heat and detaches from the adsorbent, achieving "desorption". The desorbed adsorption medium flows to the corresponding intermediate heat dissipation section along the adsorption medium transport path. Here, the temperature of the intermediate heat dissipation section is lower than the temperature of the outdoor heat exchanger. Therefore, the adsorption medium releases heat and condenses, and continues to flow into the evaporation section on the indoor side along the adsorption medium transport path, achieving "cold storage".

[0135] In this embodiment, when the refrigerant heat exchange system is in refrigerant refrigeration mode, the compressor starts and the refrigerant is transported in the refrigerant heat exchange system according to the refrigeration flow direction; and when the adsorption refrigeration system is in desorption cold storage mode, the control valve set on the adsorption medium transport flow path is opened to open the flow path of the adsorption medium from the adsorption section to the evaporation section. As the desorption cold storage mode continues to operate, the adsorption medium in the adsorption section decreases and the adsorption medium in the evaporation section increases, so that the evaporation section stores the cold energy for the adsorption refrigeration mode.

[0136] In some optional embodiments, the control method for a dual-cooling air conditioner disclosed herein further includes: after both the first adsorption refrigeration system and the second adsorption refrigeration system enter the desorption cold storage mode, controlling the third connecting pipe between the first evaporation section and the second evaporation section to remain connected, and / or controlling the fourth connecting pipe between the first adsorption section and the second adsorption section to remain connected.

[0137] In this embodiment, the first outdoor heat exchanger and the second outdoor heat exchanger are connected in series. The refrigerant flows through the first outdoor heat exchanger and the second outdoor heat exchanger in sequence. Since the high-temperature refrigerant loses some heat when flowing through the outdoor heat exchanger that flows first, it loses less heat when flowing through the other outdoor heat exchanger that flows later. This causes the desorption efficiency of the two adsorption sections of the two corresponding outdoor heat exchangers to differ due to the amount of heat. The adsorption section closer to the outdoor heat exchanger that flows first will produce more adsorbed medium. Therefore, in this embodiment, the fourth series pipeline connecting the first adsorption section and the second adsorption section is kept connected so that the adsorbed medium can flow between the two adsorption sections through the fourth series pipeline. This mainly involves the adsorbed medium in the adsorption section with more desorption flowing to the adsorption section with less desorption, so that the adsorbed medium can be transported to the evaporation section through multiple paths, thereby improving the transport rate of the adsorbed medium produced by desorption.

[0138] Similarly, while most of the adsorbent in the evaporation section is stored in liquid form, the internal space of the evaporation section is also filled with a significant amount of gaseous adsorbent. Therefore, the pressure of the gaseous adsorbent and the volume of the liquid adsorbent can affect the rate at which the adsorbent continues to be transported from the adsorption section to the evaporation section. For example, a high concentration and pressure of the gaseous adsorbent, coupled with a large amount of liquid adsorbent, will inhibit the transport of the adsorbent. Therefore, this embodiment also controls the third connecting pipe between the first and second evaporation sections to remain connected, thereby increasing the overall storage space of the evaporation section. This allows the adsorbent from the adsorption section with a larger amount of adsorbent to be stored in the other evaporation section, reducing the inhibitory effect of the higher volume of gaseous and liquid adsorbent in the evaporation section on the transport of the adsorbent and accelerating the subsequent transport of the adsorbent.

[0139] In some optional embodiments, the control method for a dual-cooling air conditioner disclosed herein further includes: controlling the first adsorption refrigeration system to exit the desorption cold storage mode when the first adsorption refrigeration system meets the preset cold storage completion conditions; or, controlling the second adsorption refrigeration system to exit the desorption cold storage mode when the second adsorption refrigeration system meets the preset cold storage completion conditions.

[0140] For the first adsorption refrigeration system, the optional conditions for completing cold storage include: the amount of adsorbent medium in the first evaporation section is greater than or equal to a first medium amount threshold; or, the conditions for completing cold storage include: the amount of adsorbent medium in the first adsorption section is less than or equal to a second medium amount threshold. For the second adsorption refrigeration system, the optional conditions for completing cold storage include: the amount of adsorbent medium in the second evaporation section is greater than or equal to a third medium amount threshold; or, the conditions for completing cold storage include: the amount of adsorbent medium in the second adsorption section is less than or equal to a fourth medium amount threshold.

[0141] The aforementioned optional cold storage completion conditions are determined based on changes in the amount of adsorbent medium in the evaporation or adsorption sections. In desorption cold storage mode, the adsorbent medium in the adsorption section flows to the corresponding evaporation section. Therefore, when the amount of adsorbent medium in the evaporation section exceeds the threshold value used to characterize the upper limit, it indicates that the amount of liquid adsorbent medium accumulated in the evaporation section is large, and the cold storage capacity is sufficient. Thus, the desorption cold storage mode can be exited. Similarly, when the amount of adsorbent medium in the adsorption section is lower than the threshold value used to characterize the lower limit, it indicates that the amount of adsorbent medium stored in the adsorption section is small. Thus, the desorption cold storage mode can be exited.

[0142] Optionally, the first or third medium quantity threshold is 80%, 90%, etc., of the total amount of adsorbent medium.

[0143] The second or fourth medium threshold is 10%, 15%, etc., of the total amount of adsorbent medium.

[0144] In some optional embodiments, the steps of the control method for a dual-cooling air conditioner disclosed herein further include: controlling the outdoor fan to run at a first speed when the adsorption refrigeration system enters the desorption cold storage mode; and controlling the outdoor fan to run at a second speed when the adsorption refrigeration system exits the desorption cold storage mode.

[0145] In this embodiment, the first rotational speed is less than the second rotational speed. Here, in the desorption cold storage mode, the desorption cold storage mode of the adsorption refrigeration system mainly utilizes the heat from the outdoor heat exchanger of the corresponding refrigerant heat exchange system to desorb the adsorbent medium in the adsorption section. Therefore, controlling the outdoor fan to operate at a lower first rotational speed can reduce the amount of heat dissipated into the outdoor environment by the outdoor fan, allowing the heat to concentrate in the surrounding environment of the adsorption section, thereby increasing the desorption rate. When the adsorption refrigeration system exits the desorption cold storage mode, the outdoor fan is controlled to operate at a higher second rotational speed to improve the heat dissipation effect of the outdoor heat exchanger, thereby improving the cooling effect of the refrigerant heat exchange system. Here, the dual-cooling air conditioner flexibly adjusts the outdoor fan speed according to the start / stop status of the desorption cold storage mode of the adsorption refrigeration system, which can improve both the desorption effect and the cooling effect of the refrigerant heat exchange system.

[0146] For example, when the adsorption refrigeration system enters the desorption cold storage mode, the first speed of the outdoor fan is 400 r / min; while when the adsorption refrigeration system exits the desorption cold storage mode, the second speed of the outdoor fan is 600 r / min.

[0147] In some optional embodiments, if the triggering conditions for the adsorption refrigeration mode are met, one or both of the first and second adsorption refrigeration systems are controlled to enter the adsorption refrigeration mode.

[0148] In this way, the "cold energy" accumulated during the desorption and cold storage phase of the adsorption refrigeration system can be used to cool the indoor environment. The adsorption refrigeration phase utilizes the adsorbent to adsorb the adsorption medium, transferring heat from the indoor side to the outdoor side, thus requiring no energy consumption. By combining adsorption refrigeration and refrigerant refrigeration, the power consumption required to maintain the indoor temperature within a comfortable range for users can be effectively reduced, lowering the operating cost of dual-cooling air conditioners.

[0149] Figure 3 This is a schematic diagram of the structure of the control device for a dual-cooling air conditioner provided in an embodiment of this disclosure.

[0150] This disclosure provides a control device for a dual-cooling air conditioner, the structure of which is as follows: Figure 3 As shown, it includes:

[0151] The processor 300 and memory 301 may further include a communication interface 302 and a bus 303. The processor 300, communication interface 302, and memory 301 can communicate with each other via the bus 303. The communication interface 302 can be used for information transmission. The processor 300 can call logical instructions stored in the memory 301 to execute the control method for a dual-cooling air conditioner described in the above embodiment.

[0152] Furthermore, the logic instructions in the aforementioned memory 301 can be implemented as software functional units and, when sold or used as independent products, can be stored in a computer-readable storage medium.

[0153] The memory 301, as a computer-readable storage medium, can be used to store software programs and computer-executable programs, such as program instructions / modules corresponding to the methods in the embodiments of this disclosure. The processor 300 executes functional applications and data processing by running the program instructions / modules stored in the memory 301, thereby implementing the control method for a dual-cooling air conditioner in the above method embodiments.

[0154] The memory 301 may include a program storage area and a data storage area. The program storage area may store the operating system and applications required for at least one function; the data storage area may store data created based on the use of the terminal device. Furthermore, the memory 301 may include high-speed random access memory and may also include non-volatile memory.

[0155] Here, the dual-cooling air conditioner provided in this disclosure also includes the control device for the dual-cooling air conditioner shown in the foregoing embodiments.

[0156] This disclosure also provides a computer-readable storage medium storing computer-executable instructions configured to execute the above-described control method for a dual-cooling air conditioner.

[0157] This disclosure also provides a computer program product, which includes a computer program stored on a computer-readable storage medium. The computer program includes program instructions that, when executed by a computer, cause the computer to perform the above-described control method for a dual-cooling air conditioner.

[0158] The aforementioned computer-readable storage medium may be a transient computer-readable storage medium or a non-transitory computer-readable storage medium.

[0159] The technical solutions of this disclosure can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes one or more instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the method described in this disclosure. The aforementioned storage medium can be a non-transitory storage medium, including: a USB flash drive, a portable hard drive, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and other media capable of storing program code; it can also be a transient storage medium.

[0160] The foregoing description and accompanying drawings fully illustrate embodiments of the present disclosure to enable those skilled in the art to practice them. Other embodiments may include structural, logical, electrical, procedural, and other changes. The embodiments represent only possible variations. Individual components and functions are optional unless explicitly required, and the order of operation may vary. Parts and features of some embodiments may be included or replace parts and features of other embodiments. The scope of the embodiments of this disclosure includes the entire scope of the claims and all available equivalents of the claims. While the terms “first,” “second,” etc., may be used in this application to describe elements, these elements should not be limited by these terms. These terms are used only to distinguish one element from another. For example, a first element may be called a second element without changing the meaning of the description, and similarly, a second element may be called a first element, provided that all occurrences of “first element” are consistently renamed and all occurrences of “second element” are consistently renamed. First and second elements are both elements, but may not be the same element. Moreover, the terminology used in this application is only for describing embodiments and is not intended to limit the claims. As used in the description of the embodiments and claims, unless the context clearly indicates otherwise, the singular forms “a,” “an,” and “the” are intended to also include the plural forms. Similarly, the term “and / or” as used herein means including one or more of the associated listed elements and all possible combinations thereof. Additionally, when used herein, the terms “comprise” and its variations “comprises” and / or “comprising” refer to the presence of stated features, integrals, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components, and / or groups thereof. Without further limitations, an element defined by the phrase “comprising an…” does not exclude the presence of additional identical elements in the process, method, or apparatus that includes said element. In this document, each embodiment may focus on the differences from other embodiments, and similar or identical parts between embodiments can be referred to mutually. For methods, products, etc., disclosed in the embodiments, if they correspond to the method section disclosed in the embodiments, the relevant parts can be referred to the description of the method section.

[0161] Those skilled in the art will recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of the embodiments of this disclosure. Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0162] The methods and products (including but not limited to devices and equipment) disclosed in the embodiments herein can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For instance, the division of units may be merely a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. In addition, the coupling or direct coupling or communication connection between the shown or discussed units may be through some interfaces, and the indirect coupling or communication connection between devices or units may be electrical, mechanical, or other forms. The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of the units may be selected to implement this embodiment according to actual needs. Furthermore, the functional units in the embodiments of this disclosure may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0163] The flowcharts and block diagrams in the accompanying drawings illustrate the architecture, functionality, and operation of possible implementations of systems, methods, and computer program products according to embodiments of this disclosure. In this regard, each block in a flowchart or block diagram may represent a module, segment, or portion of code containing one or more executable instructions for implementing a specified logical function. In some alternative implementations, the functions marked in the blocks may occur in a different order than that shown in the drawings. For example, two consecutive blocks may actually be executed substantially in parallel, and they may sometimes be executed in reverse order, depending on the functions involved. In the descriptions corresponding to the flowcharts and block diagrams in the accompanying drawings, the operations or steps corresponding to different blocks may also occur in a different order than disclosed in the description, and sometimes there is no specific order between different operations or steps. For example, two consecutive operations or steps may actually be executed substantially in parallel, and they may sometimes be executed in reverse order, depending on the functions involved. Each block in a block diagram and / or flowchart, and combinations of blocks in a block diagram and / or flowchart, can be implemented using a dedicated hardware-based system that performs the specified function or action, or using a combination of dedicated hardware and computer instructions.

Claims

1. A control method for a dual-cooling air conditioner, characterized in that, The dual-cooling air conditioner includes a refrigerant heat exchange system, a first adsorption refrigeration system, and a second adsorption refrigeration system. The refrigerant heat exchange system includes: The first indoor heat exchanger and the second indoor heat exchanger are connected in series via a first series pipeline. The first outdoor heat exchanger and the second outdoor heat exchanger are connected in series via a second series pipeline. A first indoor parallel pipeline connected to the first indoor heat exchanger includes a first indoor parallel node located on the first series pipeline and near the second indoor heat exchanger. A second indoor parallel pipeline connected to the second indoor heat exchanger includes a second indoor parallel node located on the first series pipeline and near the first indoor heat exchanger. A first outdoor parallel pipeline connected to the first outdoor heat exchanger includes a first outdoor parallel node located on the second series pipeline and near the second outdoor heat exchanger. A first outdoor parallel pipeline connected to the second outdoor heat exchanger includes a second outdoor parallel node located on the second series pipeline and near the first outdoor heat exchanger. Wherein, the first indoor parallel node and the second indoor parallel node are connected in a way that can be switched on and off on the first series pipeline; the first outdoor parallel node and the second outdoor parallel node are connected in a way that can be switched on and off on the second series pipeline; The first adsorption refrigeration system includes: a first evaporation section disposed at the first indoor heat exchanger and a first adsorption section disposed at the first outdoor heat exchanger, wherein the first evaporation section and the first adsorption section are connected in a switchable manner. The second adsorption refrigeration system includes: a second evaporation section disposed at the second indoor heat exchanger and a second adsorption section disposed at the second outdoor heat exchanger, wherein the second evaporation section and the second adsorption section are connected in a switchable manner; The control method includes: When the refrigerant heat exchange system is operating in refrigerant refrigeration mode, the operating frequency of the compressor is obtained; When the operating frequency of the compressor is less than or equal to the set frequency, the first pipeline on / off operation is performed; wherein, after the first pipeline on / off operation is performed, the refrigerant flow path of the first indoor heat exchanger is opened, and the refrigerant flow path of the second indoor heat exchanger is closed. After performing the first pipeline on / off operation, the discharge temperature of the compressor and the inlet refrigerant temperature of the first indoor heat exchanger are obtained; the superheat is calculated based on the discharge temperature and the inlet refrigerant temperature. If the superheat meets the preset protection conditions, the second pipeline on / off operation is performed; wherein, after the second pipeline on / off operation is performed, the refrigerant flow paths of the first indoor heat exchanger and the second indoor heat exchanger are both connected; the preset protection conditions include: the superheat of the refrigerant heat exchange system is less than or equal to a preset superheat threshold.

2. The control method according to claim 1, characterized in that, The set frequency satisfies the following conditions: 0.45f max ≤f 设定 <0.55f max ; Wherein, the f max f is the highest operating frequency of the compressor. 设定 The set frequency.

3. The control method according to claim 1, characterized in that, The execution of the first pipeline on / off operation includes: The first indoor parallel pipeline is disconnected, the second indoor parallel pipeline remains connected, and the first series pipeline between the first indoor parallel node and the second indoor parallel node is disconnected.

4. The control method according to claim 1, characterized in that, The second pipeline on / off operation includes: The first indoor parallel pipeline is disconnected, the second indoor parallel pipeline is disconnected, and the first series pipeline between the first indoor parallel node and the second indoor parallel node remains connected.

5. The control method according to claim 1, characterized in that, If the overheating meets the preset protection conditions, the following additional measures are also included: The control activates both the first adsorption refrigeration system and the second adsorption refrigeration system, putting them into desorption and cold storage mode.

6. The control method according to claim 5, characterized in that, After both the first adsorption refrigeration system and the second adsorption refrigeration system enter the desorption cold storage mode, the system further includes: The third connecting pipe between the first evaporator and the second evaporator is kept connected; and / or, The fourth serial pipe connecting the first adsorption section and the second adsorption section is kept in contact.

7. A control device for a dual-cooling air conditioner, characterized in that, The dual-cooling air conditioner includes a refrigerant heat exchange system, a first adsorption refrigeration system, and a second adsorption refrigeration system. The refrigerant heat exchange system includes: The first indoor heat exchanger and the second indoor heat exchanger are connected in series via a first series pipeline. The first outdoor heat exchanger and the second outdoor heat exchanger are connected in series via a second series pipeline. A first indoor parallel pipeline connected to the first indoor heat exchanger includes a first indoor parallel node located on the first series pipeline and near the second indoor heat exchanger. A second indoor parallel pipeline connected to the second indoor heat exchanger includes a second indoor parallel node located on the first series pipeline and near the first indoor heat exchanger. A first outdoor parallel pipeline connected to the first outdoor heat exchanger includes a first outdoor parallel node located on the second series pipeline and near the second outdoor heat exchanger. A first outdoor parallel pipeline connected to the second outdoor heat exchanger includes a first outdoor parallel node located on the second series pipeline and near the first outdoor heat exchanger. Wherein, the first indoor parallel node and the second indoor parallel node are connected in a way that can be switched on and off on the first series pipeline; the first outdoor parallel node and the second outdoor parallel node are connected in a way that can be switched on and off on the second series pipeline; The first adsorption refrigeration system includes: a first evaporation section disposed at the first indoor heat exchanger and a first adsorption section disposed at the first outdoor heat exchanger, wherein the first evaporation section and the first adsorption section are connected in a switchable manner. The second adsorption refrigeration system includes: a second evaporation section disposed at the second indoor heat exchanger and a second adsorption section disposed at the second outdoor heat exchanger, wherein the second evaporation section and the second adsorption section are connected in a switchable manner; The control device includes a processor and a memory storing program instructions, the processor being configured to execute the control method for a dual-cooling air conditioner as described in any one of claims 1 to 6 when executing the program instructions.

8. A dual-cooling air conditioner, characterized in that, include: The refrigerant heat exchange system, the first adsorption refrigeration system, the second adsorption refrigeration system, and the control device for a dual-refrigeration air conditioner as described in claim 7; The refrigerant heat exchange system includes: The first indoor heat exchanger and the second indoor heat exchanger are connected in series via a first series pipeline. The first outdoor heat exchanger and the second outdoor heat exchanger are connected in series via a second series pipeline. A first indoor parallel pipeline connected to the first indoor heat exchanger includes a first indoor parallel node located on the first series pipeline and near the second indoor heat exchanger. A second indoor parallel pipeline connected to the second indoor heat exchanger includes a second indoor parallel node located on the first series pipeline and near the first indoor heat exchanger. A first outdoor parallel pipeline connected to the first outdoor heat exchanger includes a first outdoor parallel node located on the second series pipeline and near the second outdoor heat exchanger. A first outdoor parallel pipeline connected to the second outdoor heat exchanger includes a first outdoor parallel node located on the second series pipeline and near the first outdoor heat exchanger. Wherein, the first indoor parallel node and the second indoor parallel node are connected in a way that can be switched on and off on the first series pipeline; the first outdoor parallel node and the second outdoor parallel node are connected in a way that can be switched on and off on the second series pipeline; The first adsorption refrigeration system includes: a first evaporation section disposed at the first indoor heat exchanger and a first adsorption section disposed at the first outdoor heat exchanger, wherein the first evaporation section and the first adsorption section are connected in a switchable manner. The second adsorption refrigeration system includes: a second evaporation section disposed at the second indoor heat exchanger and a second adsorption section disposed at the second outdoor heat exchanger, wherein the second evaporation section and the second adsorption section are connected in a switchable manner.

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