Control method and control device for dual refrigerant air conditioner, and dual refrigerant air conditioner

Abstract

The application relates to the technical field of air conditioner intelligent refrigeration, and discloses a control method for a double-refrigeration air conditioner. The control method comprises the following steps: after a refrigerant heat exchange system is started and runs, a first pipeline on-off operation is performed; and when a first adsorption refrigeration system meets a cold storage completion condition, a second pipeline on-off operation is performed. The control method for the double-refrigeration air conditioner provided by the embodiment of the application can change the on-off state of the refrigerant flow path of two pairs of indoor heat exchangers and outdoor heat exchangers by performing different pipeline on-off operations when the air conditioner runs, so that the two adsorption refrigeration systems alternately perform cold storage and auxiliary refrigeration, the refrigeration effect on the indoor environment can be effectively improved, the refrigeration power consumption of the refrigerant heat exchange system can be reduced, and the air conditioning system refrigeration performance is effectively improved. The application further discloses a control device for the double-refrigeration air conditioner and the double-refrigeration 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: (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. (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; (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; (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.

[0003] In the process of implementing the embodiments of this disclosure, at least the following problems were found in the related art: 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

[0004] 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.

[0005] 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.

[0006] In some embodiments, the control method for a dual-cooling air conditioner includes: After the refrigerant heat exchange system is started up, 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, the refrigerant flow path of the second indoor heat exchanger is closed, the refrigerant flow path of the first outdoor heat exchanger is closed, the refrigerant flow path of the second outdoor heat exchanger is opened, and the first adsorption refrigeration system enters the adsorption refrigeration mode, and the second adsorption refrigeration system enters the desorption cold storage mode. When the first adsorption refrigeration system meets the conditions for completing cold storage, the second pipeline on / off operation is executed; wherein, after the second pipeline on / off operation is executed, the refrigerant flow path of the first indoor heat exchanger is disconnected, the refrigerant flow path of the second indoor heat exchanger is connected, the refrigerant flow path of the first outdoor heat exchanger is connected, the refrigerant flow path of the second outdoor heat exchanger is disconnected, and the first adsorption refrigeration system enters the desorption cold storage mode, and the second adsorption refrigeration system enters the adsorption refrigeration mode.

[0007] In some embodiments, the control device for a dual-cooling air conditioner includes: 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.

[0008] In some embodiments, a dual-cooling air conditioner includes: 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; 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 in 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 a first outdoor heat exchanger, including a first outdoor parallel node located on the second series pipeline and near the second outdoor heat exchanger. A second outdoor parallel pipeline connected to the second outdoor heat exchanger, including a second outdoor parallel node located in the second series pipeline and near the first outdoor heat exchanger. 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. 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. 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.

[0009] The control method, apparatus, and dual-cooling air conditioner provided in this disclosure can achieve the following technical effects: The control method for dual-cooling air conditioners provided in this disclosure can change the refrigerant flow path on / off state of two pairs of indoor and outdoor heat exchangers by executing different pipeline on / off operations during air conditioner operation. This allows the two adsorption refrigeration systems to alternately perform cold storage and auxiliary refrigeration, effectively improving the cooling effect on the indoor environment and reducing the refrigeration power consumption of the refrigerant heat exchange system. This disclosure does not simply superimpose two refrigeration systems into the same air conditioner. Instead, it cleverly combines two refrigeration structures and the two processes of refrigerant refrigeration and desorption cold storage by fully considering the refrigeration principles of both systems. This not only simplifies the product structure of the combined air conditioner but also effectively improves the overall refrigeration performance of the air conditioner.

[0010] The above general description and the description below are exemplary and illustrative only and are not intended to limit this application. Attached Figure Description

[0011] 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: Figure 1 This is a schematic diagram of the structure of a dual-cooling air conditioner provided in an embodiment of this disclosure; Figure 2 This is a schematic flowchart of a control method for a dual-cooling air conditioner provided in an embodiment of this disclosure; 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

[0012] 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.

[0013] Figure 1 This is a schematic diagram of the structure of a dual-cooling air conditioner provided in an embodiment of this disclosure.

[0014] 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.

[0015] 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.

[0016] 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.

[0017] 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.

[0018] 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.

[0019] 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.

[0020] 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.

[0021] 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.

[0022] 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 in the prior art, which will not be described in detail here.

[0023] 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.

[0024] 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.

[0025] 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.

[0026] 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.

[0027] 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.

[0028] 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.

[0029] 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.

[0030] 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.

[0031] 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.

[0032] 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.

[0033] 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.

[0034] 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.

[0035] 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.

[0036] 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.

[0037] 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.

[0038] 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.

[0039] 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.

[0040] 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.

[0041] 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.

[0042] 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.

[0043] 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.

[0044] 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.

[0045] 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.

[0046] 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.

[0047] 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.

[0048] 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.

[0049] 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.

[0050] 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.

[0051] 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.

[0052] 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.

[0053] 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.

[0054] Optionally, the first intermediate heat dissipation section 24 and the second intermediate heat dissipation section 25 are horizontal flow heat sinks.

[0055] 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.

[0056] 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.

[0057] 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.

[0058] 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.

[0059] 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.

[0060] 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.

[0061] 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.

[0062] 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.

[0063] 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.

[0064] 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".

[0065] 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.

[0066] 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.

[0067] 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.

[0068] 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.

[0069] 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.

[0070] 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.

[0071] 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.

[0072] The following describes the cooperative operation of the adsorption refrigeration system and the refrigerant heat exchange system in the embodiments of this disclosure: 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.

[0073] 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".

[0074] 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.

[0075] 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.

[0076] 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.

[0077] Figure 2 This is a schematic flowchart of a control method for a dual-cooling air conditioner provided in an embodiment of this disclosure.

[0078] 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: S201. After the refrigerant heat exchange system is started up, perform the first pipeline on / off operation; 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.

[0079] In this embodiment, after the refrigerant heat exchange system is started up, a first pipeline on / off operation is performed, causing the refrigerant flow path of the first indoor heat exchanger to be open and the refrigerant flow path of the second indoor heat exchanger to be closed; conversely, the refrigerant flow path of the first outdoor heat exchanger is closed and the refrigerant flow path of the second outdoor heat exchanger is open. When the refrigerant flow path of the second indoor heat exchanger is closed, the refrigerant does not flow through it. Since the refrigerant flow path of the first indoor heat exchanger is open, the refrigerant heat exchange system primarily exchanges heat with the indoor environment through the first indoor heat exchanger. Simultaneously, because the refrigerant flow path of the first outdoor heat exchanger is closed, the refrigerant does not flow through it. Since the refrigerant flow path of the second outdoor heat exchanger is open, the refrigerant heat exchange system primarily exchanges heat with the outdoor environment through the second outdoor heat exchanger.

[0080] Here, 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 indoor parallel node and the second indoor parallel node, thereby achieving a connection relationship where the refrigerant flow path of the first indoor heat exchanger is open and the refrigerant flow path of the second indoor heat exchanger is closed; and keeping the first outdoor parallel pipeline connected, disconnecting the second outdoor parallel pipeline, and disconnecting the second series pipeline between the first outdoor parallel node and the second outdoor parallel node, thereby achieving a connection relationship where the refrigerant flow path of the first outdoor heat exchanger is closed and the refrigerant flow path of the second outdoor heat exchanger is open.

[0081] Each of the first indoor parallel pipeline, the second indoor parallel pipeline, and the first series pipeline is equipped with a separate control valve, which can be used to control the on / off state of its respective pipeline. Therefore, in this embodiment, the on / off relationship of the two indoor heat exchangers can be adjusted by controlling the closing of the control valves on the first indoor parallel pipeline and the first series pipeline, and by opening the control valve on the second indoor parallel pipeline. Similarly, each of the first outdoor parallel pipeline, the second outdoor parallel pipeline, and the second series pipeline is also equipped with a separate control valve, which can be used to control the on / off state of its respective pipeline. Therefore, in this embodiment, the on / off relationship of the two outdoor heat exchangers can be adjusted by controlling the closing of the control valves on the second indoor parallel pipeline and the first series pipeline, and by opening the control valve on the first indoor parallel pipeline.

[0082] Simultaneously, after executing the first pipeline on / off operation, the first adsorption refrigeration system enters the adsorption refrigeration mode. Since the refrigerant does not flow through the first outdoor heat exchanger after the first pipeline on / off operation, the first outdoor heat exchanger does not dissipate heat, and the ambient temperature around the first adsorption section is low. Here, the first evaporation section has already accumulated liquid adsorption medium during the desorption and cold storage stage, and its temperature was higher during cold storage. Thus, in the lower temperature environment of the first adsorption section, it begins to re-adsorb the adsorption medium, causing the liquid adsorption medium in the first evaporation section to absorb heat and evaporate, flowing back to the first adsorption section through the adsorption medium transport path, thereby achieving the transfer of heat from the indoor side to the outdoor side. In this process, the first adsorption refrigeration system can play an auxiliary refrigeration role, thus working with the refrigerant heat exchange system to improve the cooling effect on the indoor environment.

[0083] Furthermore, after performing the first pipeline on / off operation, the second adsorption refrigeration system enters the desorption cold storage mode. Because the refrigerant flows through the second outdoor heat exchanger after performing the first pipeline on / off operation, the second outdoor heat exchanger will dissipate heat to the outside, and the ambient temperature around the second adsorption section is relatively high; here, the adsorption medium in the second adsorption section becomes gaseous after absorbing heat, and flows to the second evaporation section through the adsorption medium transport path, thereby achieving "cold storage".

[0084] Therefore, by adjusting the pipeline connection of the refrigerant heat exchange system and controlling the two adsorption refrigeration systems to operate in different modes, the first adsorption refrigeration system can operate in adsorption refrigeration mode to cool the indoor environment, while the second adsorption refrigeration system operates in desorption cold storage mode to accumulate "cold energy".

[0085] S202. When the second adsorption refrigeration system meets the conditions for completing cold storage, execute the second pipeline on / off operation. In some optional embodiments, the conditions for completing cold storage include: the amount of adsorbent medium in the evaporation section is greater than or equal to a preset medium amount threshold.

[0086] In this embodiment, the condition for completing cold storage is determined based on the change in the amount of adsorbent medium in the evaporation section. In the 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 medium amount threshold used to characterize the upper limit, it indicates that there is a large amount of liquid adsorbent medium accumulated in the evaporation section and the cold storage capacity is sufficient. Therefore, the desorption cold storage mode can be exited.

[0087] Optionally, the preset media quantity threshold is 80%, 90%, etc., of the total amount of adsorbent media.

[0088] Optionally, the adsorption medium in the evaporation section mainly exists in liquid form. Therefore, the amount of adsorption medium can be determined by detecting the liquid level height of the liquid adsorption medium in the evaporation section. Here, a liquid level sensor is installed in the evaporation section, which can be used to detect the liquid level height of the adsorption medium in the evaporation section. In this way, according to the pre-set correspondence between the liquid level height and the amount of adsorption medium, the real-time amount of adsorption medium in the evaporation section can be obtained.

[0089] In some alternative embodiments, the conditions for completing cold storage include: the temperature of the evaporator is greater than or equal to a preset temperature threshold.

[0090] In this embodiment, during the desorption and cold storage process of the second adsorption refrigeration system, since the intermediate heat dissipation section cannot achieve complete heat dissipation, the adsorbent medium entering the evaporation section after condensation still carries a small amount of heat. Thus, as the desorption and cold storage continues, the temperature of the evaporation section shows a slow upward trend. The preset temperature threshold is the temperature value that the evaporation section can reach when the required cold storage capacity is met. Therefore, when the actual temperature of the evaporation section is greater than or equal to the preset temperature threshold, the system exits the desorption and cold storage mode.

[0091] Optionally, the evaporator is equipped with a temperature sensor, which can be used to detect the real-time temperature of the evaporator; therefore, in this embodiment, the temperature of the evaporator used to determine whether the cold storage completion condition is met can be detected by the temperature sensor.

[0092] In this embodiment, after the second pipeline switching operation is performed, the refrigerant flow path of the first indoor heat exchanger is disconnected, the refrigerant flow path of the second indoor heat exchanger is connected, the refrigerant flow path of the first outdoor heat exchanger is connected, and the refrigerant flow path of the second outdoor heat exchanger is disconnected. When the refrigerant flow path of the first indoor heat exchanger is disconnected, the refrigerant does not flow through the first indoor heat exchanger. Since the refrigerant flow path of the second indoor heat exchanger is connected, the refrigerant heat exchange system primarily exchanges heat with the indoor environment through the second heat exchanger. Simultaneously, because the refrigerant flow path of the second outdoor heat exchanger is disconnected, the refrigerant does not flow through the second outdoor heat exchanger. Since the refrigerant flow path of the first outdoor heat exchanger is connected, the refrigerant heat exchange system primarily exchanges heat with the outdoor environment through the first outdoor heat exchanger.

[0093] Here, the second pipeline on / off operation includes: keeping the first indoor parallel pipeline connected, disconnecting the second indoor parallel pipeline and disconnecting the first series pipeline between the first indoor parallel node and the second indoor parallel node, thereby achieving a connection relationship where the refrigerant flow path of the first indoor heat exchanger is disconnected and the refrigerant flow path of the second indoor heat exchanger is connected; and disconnecting the first outdoor parallel pipeline, keeping the second outdoor parallel pipeline connected and disconnecting the second series pipeline between the first outdoor parallel node and the second outdoor parallel node, thereby achieving a connection relationship where the refrigerant flow path of the first outdoor heat exchanger is connected and the refrigerant flow path of the second outdoor heat exchanger is disconnected.

[0094] Here, the on / off state of the aforementioned pipelines is also controlled by the opening and closing state of the control valves installed on the corresponding pipelines.

[0095] Simultaneously, after executing the second pipeline on / off operation, the first adsorption refrigeration system enters the desorption cold storage mode, and the second adsorption refrigeration system enters the adsorption refrigeration mode. The manner in which the first adsorption refrigeration system operates in desorption cold storage mode and the second adsorption refrigeration system operates in adsorption refrigeration mode can be referred to the embodiments described above, and will not be repeated here.

[0096] Compared to the first pipeline on / off operation, the first adsorption refrigeration system and the second adsorption refrigeration system each switch to a mode completely opposite to the previous mode. The first adsorption refrigeration system operates in desorption and cold storage mode to meet the "cold energy" demand, while the second adsorption refrigeration system uses the "cold energy" accumulated in the previous stage to assist the refrigerant heat exchange system in cooling.

[0097] The control method for dual-cooling air conditioners provided in this disclosure can change the refrigerant flow path on / off state of two pairs of indoor and outdoor heat exchangers by executing different pipeline on / off operations during air conditioner operation. This allows the two adsorption refrigeration systems to alternately perform cold storage and auxiliary refrigeration, effectively improving the cooling effect on the indoor environment and reducing the refrigeration power consumption of the refrigerant heat exchange system. This disclosure does not simply superimpose two refrigeration systems into the same air conditioner. Instead, it cleverly combines two refrigeration structures and the two processes of refrigerant refrigeration and desorption cold storage by fully considering the refrigeration principles of both systems. This not only simplifies the product structure of the combined air conditioner but also effectively improves the overall refrigeration performance of the air conditioner.

[0098] In some optional embodiments, the control method for a dual-cooling air conditioner disclosed herein further includes: when the first adsorption refrigeration system meets the cold storage completion condition, performing a first pipeline on / off operation.

[0099] Optionally, the conditions for completing cold storage are the same as those shown in the previous embodiments.

[0100] In this embodiment, by repeatedly judging whether the adsorption refrigeration system in desorption cold storage mode meets the cold storage completion conditions, the adsorption refrigeration system that has accumulated sufficient "cold energy" can be switched to adsorption refrigeration mode in a timely manner to provide auxiliary cooling for the indoor environment; at the same time, the adsorption refrigeration system that has consumed "cold energy" can be switched to desorption cold storage mode to re-accumulate "cold energy". This ensures that during the operation of the refrigerant heat exchange system in refrigerant refrigeration mode, at least one adsorption refrigeration system can provide auxiliary cooling, thereby guaranteeing the cooling effect on the indoor environment.

[0101] In some optional embodiments, the control method for a dual-cooling air conditioner disclosed herein further includes: after performing a first pipeline on / off operation, obtaining a first indoor ambient temperature on the indoor side; and adjusting the first refrigerant flow rate of the refrigerant heat exchange system according to the first indoor ambient temperature.

[0102] Here, the indoor ambient temperature is a parameter related to the required cooling capacity of the refrigerant heat exchange system. When the indoor ambient temperature is high, the refrigerant heat exchange system needs to operate at a higher cooling capacity to meet the greater cooling demand of the indoor environment; conversely, when the indoor ambient temperature is low, the refrigerant heat exchange system needs to operate at a lower cooling capacity to meet the lower cooling demand of the indoor environment. In this embodiment, the refrigerant flow rate of the refrigerant heat exchange system is adjusted according to the first indoor ambient temperature to change the amount of refrigerant directly used for heat exchange with the indoor environment, thereby further adjusting the cooling capacity of the refrigerant heat exchange system.

[0103] Optionally, the indoor unit of the dual-cooling air conditioner is equipped with a temperature sensor, which is used to detect the real-time ambient temperature of the indoor unit; thus, in this embodiment, the first indoor ambient temperature can be obtained by detecting the temperature sensor.

[0104] Optionally, the first refrigerant flow rate of the refrigerant heat exchange system is adjusted according to the first indoor ambient temperature, including: finding the corresponding first refrigerant flow rate from a preset correlation relationship based on the first indoor ambient temperature.

[0105] The correlation includes one or more correspondences between a first indoor ambient temperature and a first refrigerant flow rate. For example, when the first indoor ambient temperature is Tp11, the corresponding refrigerant flow rate is q11; while when the indoor ambient temperature is Tp12, the corresponding refrigerant flow rate is q12, and so on. In this correlation, the first indoor ambient temperature and the refrigerant flow rate are positively correlated, that is, the higher the first indoor ambient temperature, the greater the cooling demand of the indoor environment. Therefore, a larger refrigerant flow rate is controlled to circulate in the refrigerant heat exchange system to achieve a stronger cooling effect. Conversely, a smaller refrigerant flow rate is controlled to circulate in the refrigerant heat exchange system.

[0106] Optionally, the refrigerant flow rate can be controlled by adjusting the flow rate opening of the throttling device in the refrigerant heat exchange system.

[0107] Alternatively, this can be achieved by controlling the flow opening of the control valve on the parallel pipeline of the second indoor heat exchanger.

[0108] In some optional embodiments, the control method for a dual-cooling air conditioner disclosed herein further includes: after performing a second pipeline on / off operation, obtaining a second indoor ambient temperature on the indoor side; and adjusting the second refrigerant flow rate of the refrigerant heat exchange system according to the second indoor ambient temperature.

[0109] In this embodiment, the method for detecting and acquiring the second indoor ambient temperature can refer to the method for acquiring the first indoor ambient temperature, and will not be described in detail here.

[0110] Optionally, the method of adjusting the second refrigerant flow rate of the refrigerant heat exchange system according to the second indoor ambient temperature can refer to the method of adjusting the first refrigerant flow rate in the previous embodiment, and will not be repeated here.

[0111] In some optional embodiments, the steps of the control method for a dual-cooling air conditioner disclosed herein further include: when the first adsorption refrigeration system enters the desorption cold storage mode, controlling the first outdoor fan to run at a first speed; and when the first adsorption refrigeration system enters the adsorption refrigeration mode, controlling the first outdoor fan to run at a second speed.

[0112] In this embodiment, the first outdoor fan is the fan corresponding to the first outdoor heat exchanger, and its first speed is lower than its second speed. Here, in the desorption cold storage mode, the desorption cold storage mode of the first adsorption refrigeration system mainly utilizes the heat from the first outdoor heat exchanger of the corresponding refrigerant heat exchange system to desorb the adsorbent medium in the first adsorption section. Therefore, controlling the first outdoor fan to operate at a lower first speed can reduce the heat loss from the first outdoor fan to the outdoor environment, allowing the heat to concentrate in the surrounding environment of the first adsorption section, thereby increasing the desorption rate. In the adsorption refrigeration mode, the first outdoor fan is controlled to operate at a higher second speed to improve the heat dissipation effect of the first outdoor heat exchanger, thereby improving the cooling effect of the refrigerant heat exchange system. Here, the dual-cooling air conditioner flexibly adjusts the speed of the first outdoor fan according to the start / stop status of the desorption cold storage mode of the first adsorption refrigeration system, which can improve both the desorption effect and the cooling effect of the refrigerant heat exchange system.

[0113] For example, when the first adsorption refrigeration system enters the desorption cold storage mode, the first outdoor fan speed is 400 r / min; while when the first adsorption refrigeration system enters the adsorption refrigeration mode, the second outdoor fan speed is 600 r / min.

[0114] Similarly, the steps of the control method for a dual-cooling air conditioner disclosed herein further include: when the second adsorption refrigeration system enters the desorption cold storage mode, controlling the second outdoor fan to run at a third speed; and when the second adsorption refrigeration system enters the adsorption refrigeration mode, controlling the second outdoor fan to run at a fourth speed.

[0115] Among them, the second outdoor fan is the fan corresponding to the second outdoor heat exchanger, and the third fan has a lower speed than the fourth fan.

[0116] 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.

[0117] 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: 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.

[0118] 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.

[0119] 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.

[0120] 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.

[0121] 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.

[0122] 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.

[0123] 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.

[0124] The aforementioned computer-readable storage medium may be a transient computer-readable storage medium or a non-transitory computer-readable storage medium.

[0125] 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.

[0126] 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 any and all possible combinations. 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.

[0127] 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.

[0128] The methods and products disclosed in the embodiments herein (including but not limited to devices and equipment) 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 mutual coupling or direct coupling or communication connection shown or discussed may be through some interfaces, and the indirect coupling or communication connection of 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 can be selected to implement this embodiment according to actual needs. In addition, 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.

[0129] 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. The second indoor parallel pipeline connected to the second indoor heat exchanger includes a second indoor parallel pipeline located on the first series pipeline and near the first indoor heat exchanger. Connecting nodes; 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 second outdoor parallel pipeline connected to the second outdoor heat exchanger, which 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: After the refrigerant heat exchange system is started up, a 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 connected, the refrigerant flow path of the second indoor heat exchanger is disconnected, the refrigerant flow path of the first outdoor heat exchanger is disconnected, the refrigerant flow path of the second outdoor heat exchanger is connected, and the first adsorption refrigeration system enters adsorption refrigeration mode, and the second adsorption refrigeration system enters desorption cold storage mode. When the second adsorption refrigeration system meets the conditions for completing cold storage, the second pipeline on / off operation is executed; wherein, after the second pipeline on / off operation is executed, the refrigerant flow path of the first indoor heat exchanger is disconnected, the refrigerant flow path of the second indoor heat exchanger is connected, the refrigerant flow path of the first outdoor heat exchanger is connected, the refrigerant flow path of the second outdoor heat exchanger is disconnected, and the first adsorption refrigeration system enters the desorption cold storage mode, and the second adsorption refrigeration system enters the adsorption refrigeration mode.

2. The control method according to claim 1, characterized in that, The conditions for completing the cold storage include: The amount of adsorbent in the evaporation section is greater than or equal to a preset threshold value; or, The temperature of the evaporator is greater than or equal to the preset temperature threshold.

3. The control method according to claim 1 or 2, characterized in that, Also includes: When the first adsorption refrigeration system meets the cold storage completion condition, the first pipeline on / off operation is executed.

4. 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; and... The first outdoor parallel pipeline remains connected, the second outdoor parallel pipeline is disconnected, and the second series pipeline between the first outdoor parallel node and the second outdoor parallel node is disconnected.

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

6. The control method according to claim 1, characterized in that, After performing the first pipeline on / off operation, the process also includes: Obtain the first indoor ambient temperature on the indoor side; The first refrigerant flow rate of the refrigerant heat exchange system is adjusted according to the first indoor ambient temperature.

7. The control method according to claim 6, characterized in that, The step of adjusting the first refrigerant flow rate of the refrigerant heat exchange system according to the first indoor ambient temperature includes: Based on the first indoor ambient temperature, the corresponding first refrigerant flow rate is found from a preset association relationship; wherein, the association relationship includes one or more correspondences between the first indoor ambient temperature and the first refrigerant flow rate.

8. The control method according to claim 1, characterized in that, After performing the second pipeline on / off operation, the process also includes: Obtain the second indoor ambient temperature on the indoor side; The second refrigerant flow rate of the refrigerant heat exchange system is adjusted according to the second indoor ambient temperature.

9. 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 second outdoor parallel pipeline connected to the second outdoor heat exchanger, which 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 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 8 when executing the program instructions.

10. 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 9; 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 second outdoor parallel pipeline connected to the second outdoor heat exchanger, which 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.

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