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: acquiring the outdoor coil temperature of an outdoor heat exchanger and the exhaust temperature of a compressor during operation of a refrigerant heat exchange system in a refrigerant refrigeration mode; calculating the temperature difference between the exhaust temperature and the outdoor coil temperature; and if the temperature difference is less than or equal to a temperature difference threshold, controlling an adsorption refrigeration system to operate in a first mode; wherein the first mode comprises that an evaporation part is respectively connected to a first adsorption part and a second adsorption part, and the first adsorption part is disconnected from the second adsorption part. The control method can adjust the number of paths of the medium flowing to the evaporation part by changing the on-off state of the two adsorption parts. 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:

[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] During the operation of the refrigerant heat exchange system in refrigerant cooling mode, the outdoor coil temperature of the outdoor heat exchanger and the discharge temperature of the compressor are obtained.

[0013] Calculate the temperature difference between the exhaust temperature and the outdoor coil temperature;

[0014] If the temperature difference is less than or equal to the temperature difference threshold, the adsorption refrigeration system is controlled to operate in the first mode.

[0015] The first mode includes an evaporation section connected to a first adsorption section and a second adsorption section, and a first adsorption section disconnected from the second adsorption section.

[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 mainly includes an indoor heat exchanger, an outdoor heat exchanger, a compressor, and a throttling device;

[0020] One or more adsorption refrigeration systems, each adsorption refrigeration system comprising:

[0021] Evaporator section, located at the indoor heat exchanger of the refrigerant heat exchange system;

[0022] The first adsorption section is located at the outdoor heat exchanger of the refrigerant heat exchange system, and a first adsorption medium transport flow path that can be switched on and off is constructed between the first adsorption section and the evaporation section.

[0023] The second adsorption section is located at the compressor of the refrigerant heat exchange system. A second adsorption medium transport path that can be switched on and off is constructed between the second adsorption section and the evaporation section, and a third adsorption medium transport path that can be switched on and off is constructed between the second adsorption section and the first adsorption section.

[0024] Control devices for dual-cooling air conditioners, as described in some of the embodiments above.

[0025] The control method, apparatus, and dual-cooling air conditioner provided in this disclosure can achieve the following technical effects:

[0026] The control method for a dual-cooling air conditioner provided in this disclosure can adjust the connection state between the outdoor coil temperature of the outdoor heat exchanger corresponding to the first and second adsorption sections and the exhaust temperature of the compressor during the desorption and cold storage stage by adjusting the temperature difference between them. The heat source for the desorption and cold storage stage is the heat discharged by the refrigerant heat exchange system; therefore, no additional heat source is required to achieve the desorption and cold storage process of adsorption refrigeration. By changing the connection state between the two adsorption sections, the number of paths from the adsorption medium in the adsorption section to the evaporation section can be adjusted, thereby adapting the operating state of the adsorption refrigeration system to the current operating conditions to ensure the working efficiency of the desorption and cold storage mode. This disclosure does not simply superimpose two refrigeration systems into the same air conditioner; rather, it cleverly combines two refrigeration structures and the two processes of refrigerant refrigeration and desorption and 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.

[0027] The above general description and the description below are exemplary and illustrative only and are not intended to limit this application. Attached Figure Description

[0028] 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:

[0029] Figure 1 This is a schematic diagram of the structure of a dual-cooling air conditioner provided in an embodiment of this disclosure;

[0030] Figure 2 This is a schematic flowchart of a control method for a dual-cooling air conditioner provided in an embodiment of this disclosure;

[0031] 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

[0032] 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.

[0033] Figure 1This is a schematic diagram of the structure of a dual-cooling air conditioner provided in an embodiment of this disclosure.

[0034] like Figure 1 As shown in the illustration, this disclosure provides a dual-cooling air conditioner, including a refrigerant heat exchange system and an adsorption refrigeration system. 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 functions of the indoor environment. The adsorption refrigeration system can be used to cool the indoor environment when operating in adsorption refrigeration mode.

[0035] 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 11, an outdoor heat exchanger 12, a compressor 13, and a throttling device 14; the indoor heat exchanger 11, the outdoor heat exchanger 12, 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.

[0036] Here, the dual-cooling air conditioner includes an indoor unit and an outdoor unit. The indoor heat exchanger is located in the indoor unit, which is also equipped with an indoor fan for driving indoor air to exchange heat with the indoor heat exchanger 11. The outdoor heat exchanger 12 and compressor 13 are located in the outdoor unit, which is also equipped with an outdoor fan for outdoor air to exchange heat with the outdoor heat exchanger 12. The outdoor heat exchanger 12 is located on the air inlet side of the outdoor fan.

[0037] 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.

[0038] 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 first flows through the outdoor heat exchanger 12 to exchange heat with the outdoor environment, then flows into the indoor heat exchanger 11 to exchange heat with the indoor environment, and finally the refrigerant flows back to the compressor 13 to perform compression operation again. During this process, the refrigerant flowing through the outdoor heat exchanger 12 releases heat to the outdoor environment, and the refrigerant flowing through the indoor heat exchanger 11 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.

[0039] 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 indoor heat exchanger 11 can be lower. This allows the indoor heat exchanger 11 to reach a lower temperature as the refrigerant absorbs heat and evaporates. Thus, when the surface temperature of the indoor heat exchanger 11 is lower than the dew point temperature of the current operating condition, the water vapor in the indoor air flowing through the indoor heat exchanger 11 can condense on the indoor heat exchanger 11, thereby achieving the purpose of reducing indoor air humidity.

[0040] 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 indoor heat exchanger 11 to exchange heat with the outdoor environment, then flows into the outdoor heat exchanger 12 to exchange heat with the indoor environment, and finally the refrigerant flows back to the compressor 13 to re-compress. During this process, the refrigerant flowing through the indoor heat exchanger 11 releases heat to the indoor environment, and the refrigerant flowing through the outdoor heat exchanger 12 absorbs heat from the outdoor environment. Through the circulation of the refrigerant in the refrigerant circulation loop, heat from the outside can be continuously released into the indoor environment, thereby achieving the purpose of raising the indoor temperature.

[0041] 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.

[0042] In some alternative embodiments, the dual-cooling air conditioner may be equipped with only one adsorption refrigeration system, or it may be equipped with a group of adsorption refrigeration systems, which may include two or more adsorption refrigeration systems.

[0043] Taking one of the adsorption refrigeration systems as an example, the adsorption refrigeration system includes a first adsorption section 21, a second adsorption section 22, and an evaporation section 23. The first adsorption section 21 is located at the outdoor heat exchanger 12 of the refrigerant heat exchange system and is filled with an adsorbent. It is used to absorb heat from the outdoor heat exchanger 12 and release the adsorbed medium during the desorption cold storage stage, and to adsorb the adsorbed medium and release heat during the adsorption refrigeration stage. The second adsorption section 22 is located at the compressor 13 of the refrigerant heat exchange system and is filled with an adsorbent. It is used to absorb heat from the compressor 13 and release the adsorbed medium during the desorption cold storage stage, and to adsorb the adsorbed medium and release heat during the adsorption refrigeration stage. The evaporation section 23 is located on the indoor side and is used to store the liquid adsorbed medium from the first adsorption section 21 and / or the second adsorption section 22 during the desorption cold storage stage, and to absorb heat from the indoor environment and transport the vaporized adsorbed medium to the first adsorption section 21 and / or the second adsorption section 22 during the adsorption refrigeration stage.

[0044] In some embodiments, the first adsorption section 21 is disposed between the outdoor fan and the outdoor heat exchanger 12. Here, since the outdoor heat exchanger 12 is disposed on the air inlet side of the outdoor fan, the heat dissipated by the outdoor heat exchanger 12 can first flow through the first adsorption section 21 sandwiched between the outdoor fan and the outdoor heat exchanger 12 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.

[0045] Optionally, the outdoor heat exchanger 12 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 outdoor heat exchanger 12, in this embodiment, the overall shape of the first adsorption part 21 is adapted to the outdoor heat exchanger 12, and it is also designed to semi-enclose the outdoor fan and fits the outdoor heat exchanger 12, thereby effectively increasing the heat exchange area between the first adsorption part 21 and the outdoor heat exchanger 12 and improving the waste heat utilization efficiency of the outdoor heat exchanger 12.

[0046] Here, for the adsorption refrigeration system group, in order to ensure that the first adsorption parts 21 of multiple adsorption refrigeration systems can absorb heat from the outdoor heat exchanger 12 evenly and to avoid the situation where the first adsorption parts 21 of individual adsorption refrigeration systems deviate from the outdoor heat exchanger 12 and thus absorb too little heat, the first adsorption parts 21 of multiple adsorption refrigeration systems in the adsorption refrigeration system group are arranged side by side. Optionally, the first adsorption parts 21 of multiple adsorption refrigeration systems are arranged side by side along the transverse or longitudinal direction of the outdoor heat exchanger 12. The first adsorption parts 21 are designed with a shape that matches the corresponding part of the outdoor heat exchanger 12 to ensure the heat exchange efficiency of both.

[0047] Optionally, an adsorption medium transport path is also constructed between adjacent first adsorption sections 21; in this way, during the desorption and adsorption cooling stages, the gaseous adsorption medium can flow between multiple first adsorption sections 21, thereby improving the overall desorption and cooling effect and the adsorption cooling effect of the adsorption cooling system.

[0048] In some embodiments, the second adsorption section 22 is an encircling structure surrounding at least part of the compressor 13 body to increase the heat exchange area between the compressor 13 and the second adsorption section 22 and improve the heat exchange capacity.

[0049] Optionally, the second adsorption section 22 is a hollow cylindrical structure. The hollow space can be used to accommodate the compressor 13 and its related components. In this way, when the compressor 13 and its related components dissipate heat to the outside, most of the heat can be conducted to the second adsorption section 22 to improve the desorption efficiency of the second adsorption section 22. The second adsorption section 22 has a flow path for the adsorption medium to circulate inside.

[0050] Optionally, the second adsorption section 22 is fitted into the compressor 13. This fitted arrangement allows heat to be directly conducted from the compressor 13 to the second adsorption section 22 via solid heat conduction, effectively reducing heat loss and improving the utilization efficiency of the compressor 13's waste heat.

[0051] Optionally, for multiple adsorption refrigeration system groups, in order to ensure that the second adsorption sections of the multiple adsorption refrigeration systems can absorb heat from the compressor 13 evenly, the second adsorption sections 22 of the multiple adsorption refrigeration systems in the adsorption refrigeration system group are arranged side by side along the longitudinal direction of the compressor 13.

[0052] Optionally, the evaporation section 23 has a plate-fin structure. The plate-fin structure can effectively improve the heat exchange effect between the adsorption medium in the evaporation section 23 and the indoor environment during the desorption and cold storage stage, thereby enhancing the heat absorption and cooling capacity. At the same time, a flow path for the adsorption medium is formed inside the evaporation section 23, and this flow path is connected to the adsorption medium transport flow path.

[0053] In some optional embodiments, the indoor heat exchanger 11 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 evaporator 23 and the indoor environment, in this embodiment, the overall shape of the evaporator 23 is adapted to the indoor heat exchanger 11 and is also designed to semi-encircle the indoor fan and is set close to the indoor heat exchanger 11 to increase the heat exchange area between the evaporator 23 and the airflow flowing through the indoor unit and improve the heat absorption and cooling capacity.

[0054] Here, for the adsorption refrigeration system group, in order to enable the evaporation sections 23 of the multiple adsorption refrigeration systems to absorb heat from the indoor environment evenly, the evaporation sections 23 of the multiple adsorption refrigeration systems are also arranged in a side-by-side manner; optionally, the evaporation sections 23 of the multiple adsorption refrigeration systems are arranged in a side-by-side along the transverse or longitudinal direction of the indoor heat exchanger 11, and the evaporation section 23 is designed to be adapted to the corresponding part of the indoor heat exchanger 11.

[0055] Optionally, an adsorption medium transport path is also constructed between adjacent evaporation sections 23; in this way, during the desorption and adsorption cold storage stages, liquid and gaseous adsorption media can flow between multiple evaporation sections 23, thereby improving the overall desorption and cold storage effect and adsorption refrigeration effect of the adsorption refrigeration system.

[0056] In addition, the 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 so that at least part of the gaseous adsorption medium is liquefied, and the liquefied adsorption medium is further conveyed to the evaporation section 23 for storage.

[0057] 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 12 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 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 a liquid state.

[0058] Meanwhile, the 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, so that at least part of the gaseous adsorption medium is liquefied, and the liquefied adsorption medium is further conveyed to the evaporation section 23 for storage.

[0059] 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.

[0060] Optionally, the first intermediate heat dissipation section 24 and the second intermediate heat dissipation section 25 are horizontal flow heat sinks.

[0061] 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.

[0062] 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.

[0063] 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.

[0064] In this embodiment, a first adsorption medium transport flow path is constructed between the first adsorption section 21 and the evaporation section 23, and the adsorption medium can flow between the first adsorption section 21, the first intermediate heat dissipation section 24 and the evaporation section 23 via the first adsorption medium transport flow path.

[0065] Here, the first adsorption medium transport path includes a first desorption flow path and a first adsorption flow path, wherein the first desorption flow path is the flow path used for transporting the adsorption medium during the desorption and cold storage stage, and the first adsorption flow path is the flow rate used for transporting the adsorption medium during the adsorption and cold storage stage.

[0066] In the first desorption flow path, the first adsorption section 21, the first intermediate heat dissipation section 24 and the evaporation section 23 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 evaporation section 23 in sequence, and is finally stored in the evaporation section 23 in a liquid form.

[0067] 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 → evaporation section 23". 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 evaporation section 23.

[0068] In the first adsorption flow path, the evaporation section 23 and the first adsorption section 21 are connected in series, so that after the adsorption medium flows out of the evaporation section 23 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.

[0069] 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 "evaporation section 23 → first adsorption section 21".

[0070] 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.

[0071] In this embodiment, a second adsorption medium transport path is constructed between the second adsorption section 22 and the evaporation section 23, and the adsorption medium can flow between the second adsorption section 22, the second intermediate heat dissipation section 25 and the evaporation section 23 via the second adsorption medium transport path.

[0072] 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.

[0073] 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.

[0074] In this embodiment, the adsorption refrigeration system further includes two control valves. A first control valve 26 is disposed on the first adsorption medium conveying flow path to control the on / off state and flow rate of the first adsorption medium conveying flow path. A second control valve 27 is disposed on the second adsorption medium conveying flow path to control the on / off state and flow rate of the second adsorption medium conveying flow path. Here, each control valve is disposed on a non-parallel flow path section of the desorption flow path near the corresponding adsorption section in the above embodiment. Therefore, the flow rate control for both the desorption and adsorption refrigeration stages of the adsorption section can be achieved using only one control valve.

[0075] 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.

[0076] In some embodiments, a third adsorption medium transport path is constructed between the second adsorption section 22 and the first adsorption section 21, and the adsorption medium can flow between the second adsorption section 22 and the first adsorption section 21 via the third adsorption medium transport path.

[0077] Optionally, the second adsorption medium delivery path further includes parallel pipe sections, one of which is provided with a first check valve that limits the flow of the adsorption medium from the first adsorption section 21 to the second adsorption section 22, and the other parallel pipe section is provided with a second check valve that limits the flow of the adsorption medium from the second adsorption section 22 to the first adsorption section 21.

[0078] Here, during the desorption and cold storage stage, the second one-way valve can be opened and the first one-way valve can be closed, so that the adsorption medium can only flow from the second adsorption section 22 to the first adsorption section 21 through the second one-way valve. This ensures that the adsorption medium flows in the direction of evaporation, reducing the occurrence of adsorption medium flowing from the first adsorption section 21 to the second adsorption section 22. During the adsorption and refrigeration stage, the first one-way valve can be opened and the second one-way valve can be closed, so that the adsorption medium can only flow from the first adsorption section 21 to the second adsorption section 22 through the first one-way valve. This ensures that the adsorption medium in the second adsorption section 22 can be effectively adsorbed by the adsorbent during the adsorption and refrigeration stage, reducing the occurrence of backflow to the first adsorption section 21.

[0079] In some embodiments, a fourth adsorption medium transport path is constructed between the second adsorption section and the evaporation section. The adsorption medium can flow directly between the second adsorption section and the evaporation section via this fourth adsorption medium transport path, and no intermediate heat dissipation section is provided on the second adsorption medium transport path. Here, a third control valve 28 is provided on the fourth adsorption medium transport path for controlling its on / off state. According to actual control needs, the third control valve 28 can be used to control the fourth adsorption medium transport path to be in a closed state or a conductive state.

[0080] The following describes the cooperative operation of the adsorption refrigeration system and the refrigerant heat exchange system in the embodiments of this disclosure:

[0081] 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.

[0082] 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 outdoor heat exchanger 12 and the compressor 13 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 liquid adsorbent medium obtained by condensation enters the evaporation section 23 as the stored "cold energy".

[0083] The adsorption refrigeration system operates in adsorption refrigeration mode under the premise that 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 refrigeration mode or refrigerant dehumidification mode, both the outdoor heat exchanger 12 and the compressor 13 stop working and do not release heat to the outside. Therefore, the temperature of the first adsorption section 21 is lower than when the outdoor heat exchanger 12 releases heat, and the temperature of the second adsorption section 22 is also lower than when the compressor 13 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 evaporation section 23 begins to absorb heat and evaporate into a gaseous adsorption medium, which then flows back to the first adsorption section 21 and the second adsorption section 22 through their respective adsorption flow paths. During this process, the adsorption medium absorbs heat from the indoor environment and releases the heat to the outdoor environment where the adsorption section is located after the adsorption medium is re-adsorbed by the adsorbent. Therefore, by the reverse flow of the adsorption medium compared to the desorption and cold storage stage, adsorption refrigeration and cooling of the indoor environment can be achieved.

[0084] 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.

[0085] Figure 2 This is a schematic flowchart of a control method for a dual-cooling air conditioner provided in an embodiment of this disclosure.

[0086] 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:

[0087] S201. During the operation of the refrigerant heat exchange system in refrigerant cooling mode, obtain the outdoor coil temperature of the outdoor heat exchanger and the discharge temperature of the compressor.

[0088] In the high-temperature conditions of summer, when a dual-cooling air conditioner is turned on, the refrigerant heat exchange system defaults to operating in refrigerant cooling mode. During 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 through the heat exchange process between the outdoor heat exchanger and the outdoor environment, the heat is discharged to the outdoor environment. At this time, the temperature of the outdoor heat exchanger and the compressor is higher than the temperature of the outdoor environment.

[0089] While the refrigerant heat exchange system operates in refrigerant refrigeration mode, the adsorption refrigeration system enters desorption cold storage mode. The outdoor heat exchanger and compressor discharge heat to their surrounding environment, causing the ambient temperature to rise. Therefore, the adsorption media in the first adsorption section of the adsorption refrigeration system located near the outdoor heat exchanger and the second adsorption section of the adsorption refrigeration system located near the compressor absorb heat and detach from the adsorbent, achieving "desorption". The desorbed adsorption media flow to their respective intermediate heat dissipation sections along the adsorption media transport path. Here, the temperature of the intermediate heat dissipation section is lower than that of the outdoor heat exchanger and compressor. Therefore, the adsorption media releases heat and condenses, and continues to flow into the indoor evaporation section along the adsorption media transport path, achieving "cold storage".

[0090] 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.

[0091] In some optional embodiments, the outdoor unit of the dual-cooling air conditioner is equipped with two temperature sensors. One temperature sensor is located at the coil position of the outdoor heat exchanger, which can be used to detect the real-time temperature of the coil of the outdoor unit. The other temperature sensor is located at the discharge end of the compressor, which can be used to detect the real-time temperature of the refrigerant discharged by the compressor. Therefore, in step S201, the outdoor coil temperature and the discharge temperature can be detected by the two temperature sensors respectively.

[0092] S202. Calculate the temperature difference between the exhaust temperature and the outdoor coil temperature;

[0093] Generally, the compressor compresses the refrigerant, causing it to heat up and pressurize within the compressor. The outdoor heat exchanger dissipates the heat from the refrigerant discharged by the compressor into the outdoor environment. Therefore, the compressor's exhaust temperature is generally higher than the outdoor coil temperature of the outdoor heat exchanger. In this embodiment, the temperature difference is calculated by subtracting the outdoor coil temperature from the exhaust temperature.

[0094] For example, the exhaust temperature is T 排气 The outdoor coil temperature is T 外盘管 The temperature difference between the two is ΔT = T 排气 -T 外盘管 .

[0095] S203. If the temperature difference is less than or equal to the temperature difference threshold, control the adsorption refrigeration system to operate in the first mode.

[0096] In this embodiment, the temperature difference threshold is a parameter used to characterize the temperature difference between the compressor's exhaust temperature and the outdoor coil temperature of the outdoor heat exchanger, which affects the required number of desorption transport paths. The number of desorption transport paths directly affects the flow rate of the adsorption medium delivered to the evaporation section. More desorption transport paths mean that the adsorption section can have more transport paths for the adsorption medium, thereby increasing the flow rate of the adsorption medium. Conversely, fewer desorption transport paths will reduce the flow rate of the adsorption medium.

[0097] Here, when the temperature difference is less than or equal to the temperature difference threshold, the temperature difference between the outdoor coil temperature and the exhaust temperature is relatively small. Therefore, the difference in the desorption amount of the adsorption medium in the corresponding first adsorption section and the second adsorption section is also relatively small. Thus, the first adsorption section and the second adsorption section can meet the requirements of the current working condition for the desorption transport path by simply transporting the adsorption medium to the evaporation section through their respective adsorption medium transport flow paths.

[0098] Therefore, in this embodiment, if the temperature difference is less than or equal to the temperature difference threshold, the adsorption refrigeration system is controlled to operate in a first mode, wherein the first mode includes the evaporation part being connected to the first adsorption part and the second adsorption part respectively, and the first adsorption part being disconnected from the second adsorption part.

[0099] Optionally, the first adsorption section and the evaporation section are connected via a first adsorption medium transport path, and a control valve for controlling their on / off state is provided on the first adsorption medium transport path; the second adsorption section and the evaporation section are connected via a second adsorption medium transport path, and a control valve for controlling their on / off state is provided on the second adsorption medium transport path; the second adsorption section and the first adsorption section are connected via a third adsorption medium transport path, and a control valve for controlling their on / off state is also provided on the third adsorption medium transport path. Thus, in the first mode of operation, the control valves on the first and second adsorption medium transport paths can be opened, and the control valve on the third adsorption medium transport path can be closed.

[0100] The control method for a dual-cooling air conditioner provided in this disclosure can adjust the connection state between the outdoor coil temperature of the outdoor heat exchanger corresponding to the first and second adsorption sections and the exhaust temperature of the compressor during the desorption and cold storage stage by adjusting the temperature difference between them. The heat source for the desorption and cold storage stage is the heat discharged by the refrigerant heat exchange system; therefore, no additional heat source is required to achieve the desorption and cold storage process of adsorption refrigeration. By changing the connection state between the two adsorption sections, the number of paths from the adsorption medium in the adsorption section to the evaporation section can be adjusted, thereby adapting the operating state of the adsorption refrigeration system to the current operating conditions to ensure the working efficiency of the desorption and cold storage mode. This disclosure does not simply superimpose two refrigeration systems into the same air conditioner; rather, it cleverly combines two refrigeration structures and the two processes of refrigerant refrigeration and desorption and 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.

[0101] In some optional embodiments, the control method for a dual-cooling air conditioner disclosed herein further includes: when the adsorption refrigeration system is operating in a first mode, determining the first adsorption medium flow rate and the second adsorption medium flow rate based on the temperature difference. The first adsorption medium flow rate is the flow rate of the adsorption medium supplied from the first adsorption section to the evaporation section, and the second adsorption medium flow rate is the flow rate of the adsorption medium supplied from the second adsorption section to the evaporation section.

[0102] In this embodiment, since the heat sources for the first adsorption section and the second adsorption section are respectively from the outdoor heat exchanger and the compressor, the coil temperature of the outdoor heat exchanger can affect the desorption rate and desorption amount of the adsorbent medium in the first adsorption section, and the exhaust temperature of the compressor can affect the desorption rate and desorption amount of the adsorbent medium in the second adsorption section. The temperature difference threshold between the exhaust temperature and the outdoor coil can reflect the temperature difference between the two, and thus also reflect the difference in the desorption rate and desorption amount between the first adsorption section and the second adsorption section. Since the gaseous adsorbent medium generated by the desorption of the first adsorption section and the second adsorption section both need to be cooled down in their respective intermediate heat dissipation sections, the amount of heat dissipation of the two adjacent intermediate heat dissipation sections will jointly affect the temperature change of the environment in which they are located. Therefore, if the heat dissipation of one intermediate heat dissipation section is too large, it can easily lead to the problem of inhibiting the heat dissipation effect of the other intermediate heat dissipation section. For example, if the gaseous adsorbent medium in the second adsorption section corresponding to the compressor has a large desorption amount and a high temperature, the intermediate heat dissipation section corresponding to the second adsorption section will emit a large amount of heat, which can easily cause the ambient temperature around the intermediate heat dissipation section corresponding to the first adsorption section to rise and the heat dissipation effect to deteriorate.

[0103] Therefore, in this embodiment, the flow rates of the first and second adsorption media are determined based on the temperature difference. By adjusting the flow rates of the adsorption media, the desorbed gaseous adsorption media in both the first and second adsorption sections can be effectively cooled in the intermediate heat dissipation section, thus ensuring the cooling effect of the desorption cooling mode.

[0104] In this embodiment, the control valves installed on the first adsorption medium conveying flow path and the second adsorption medium conveying flow path can not only control the on / off state of their respective adsorption medium conveying flow paths, but also adjust the flow rate of the adsorption medium flowing through the two adsorption medium conveying flow paths by changing the flow opening.

[0105] Optionally, determining the flow rate of the first adsorption medium and the flow rate of the second adsorption medium based on the temperature difference includes: obtaining the flow rate of the first adsorption medium and the flow rate of the second adsorption medium corresponding to the temperature difference from a preset first correlation relationship.

[0106] Here, the first correlation includes the correspondence between the temperature difference and the flow rates of the first and second adsorption media. For example, when the temperature difference is ΔT1, the corresponding flow rate of the first adsorption media is q11 and the flow rate of the second adsorption media is q21; when the temperature difference is ΔT2, the corresponding flow rate of the first adsorption media is q12 and the flow rate of the second adsorption media is q22, and so on.

[0107] In the first correlation, the flow rates of the first and second adsorption media are negatively correlated with the temperature difference. That is, when the temperature difference is large, the heat dissipation demand of the gaseous adsorption media generated by the desorption of the second adsorption section is relatively large due to the higher exhaust temperature. Therefore, the second adsorption medium is set to a smaller value to reduce the flow rate of the gaseous adsorption medium from the second adsorption section to the intermediate heat dissipation section. This not only allows the adsorption medium of the second adsorption section to dissipate heat fully in the intermediate heat dissipation section, but also reduces the adverse effects of excessive heat dissipation in the intermediate heat dissipation section on the other intermediate heat dissipation section. At the same time, the first adsorption medium is also set to a smaller value to reduce the flow rate of the gaseous adsorption medium from the first adsorption section to the intermediate heat dissipation section, so that the gaseous adsorption medium of the first adsorption section can also dissipate heat fully in its corresponding intermediate heat dissipation section.

[0108] In some optional embodiments, the control method for dual-cooling air conditioners disclosed herein further includes: if the temperature difference is greater than a temperature difference threshold, controlling the adsorption refrigeration system to operate in a second mode.

[0109] Here, when the temperature difference is less than or equal to the temperature difference threshold, the temperature difference between the outdoor coil temperature and the exhaust temperature is relatively large. Therefore, the desorption amount of the adsorbent in the corresponding first adsorption section and the second adsorption section is also relatively large. The amount of gaseous adsorbent desorbed in the second adsorption section is more than that in the first adsorption section. Therefore, by connecting the first adsorption section and the second adsorption section, the transport path of the gaseous adsorbent in the second adsorption section can be increased. In addition to some gaseous adsorbent continuing to be transported to the evaporation section through the second adsorption medium flow path, some of its adsorbent can also flow through the first adsorption section through the third adsorption medium transport flow path, and then flow to the evaporation section together with the gaseous adsorbent in the first adsorption section through the first adsorption medium transport flow path, thereby sufficiently meeting the requirements of the current working condition for the desorption transport path.

[0110] Therefore, in this embodiment, if the temperature difference is greater than the temperature difference threshold, the adsorption refrigeration system is controlled to operate in a second mode, wherein the first mode includes the evaporation part being connected to the first adsorption part and the second adsorption part respectively, and the first adsorption part and the second adsorption part being kept in communication.

[0111] Optionally, when running the second mode, the control valves on the first and second adsorption medium delivery paths can be kept open, and the control valve on the third adsorption medium delivery path can be opened.

[0112] In some optional embodiments, the control method for a dual-cooling air conditioner disclosed herein further includes: when the adsorption refrigeration system is operating in a second mode, determining the first adsorption medium flow rate, the second adsorption medium flow rate, and the third adsorption medium flow rate based on the temperature difference. The first adsorption medium flow rate is the flow rate of the adsorption medium supplied from the first adsorption section to the evaporation section, the second adsorption medium flow rate is the flow rate of the adsorption medium supplied from the second adsorption section to the evaporation section, and the third adsorption medium flow rate is the flow rate of the adsorption medium supplied from the second adsorption section to the first adsorption section.

[0113] Compared to the previous embodiment of controlling the first mode of operation, this embodiment, in addition to determining the flow rate of the first adsorption medium and the flow rate of the second adsorption medium based on the temperature difference, also determines the flow rate of the third adsorption medium flowing through the third adsorption medium conveying path based on the temperature difference. Adjusting the flow rate of the adsorption medium flowing from the second adsorption section to the first adsorption section also enables the desorbed gaseous adsorption medium in both the first and second adsorption sections to be fully and effectively cooled in the intermediate heat dissipation section, ensuring the cooling effect of the desorption cooling mode.

[0114] Optionally, the control valve installed on the third adsorption medium conveying flow path can not only control the on / off state of the third adsorption medium conveying flow path, but also adjust the flow rate of the adsorption medium flowing through the third adsorption medium conveying flow path by changing the flow opening.

[0115] Optionally, the flow rates of the first adsorption medium, the second adsorption medium, and the third adsorption medium are determined based on the temperature difference, including: obtaining the flow rates of the first adsorption medium, the second adsorption medium, and the third adsorption medium corresponding to the temperature difference from a preset second correlation.

[0116] Here, the second correlation includes the correspondence between the temperature difference and the flow rates of the first, second, and third adsorption media. For example, when the temperature difference is ΔT1, the corresponding flow rates of the first, second, and third adsorption media are q11, q21, and q31; when the temperature difference is ΔT2, the corresponding flow rates of the first, second, and third adsorption media are q12, q22, and q32, and so on.

[0117] In the second correlation, the flow rate of the second adsorption medium is negatively correlated with the temperature difference, while the flow rates of the first and third adsorption media are positively correlated with the temperature difference. That is, when the temperature difference is large, the flow rate of the second adsorption medium is controlled to be smaller to reduce the flow rate of the gaseous adsorption medium flowing from the second adsorption section to the intermediate heat dissipation section. At the same time, the flow rates of the first and third adsorption media are controlled to be larger to increase the flow rate of the gaseous adsorption medium flowing from the second adsorption section to the first adsorption section, as well as the flow rate of the gaseous adsorption medium mixed in the first adsorption section flowing to the corresponding intermediate heat dissipation section. This reduces the temperature difference between the two intermediate heat dissipation sections, reduces the adverse effects of inhibiting heat dissipation, and effectively ensures the heat dissipation effect of the two gaseous adsorption media flows in the two intermediate heat dissipation sections.

[0118] In some optional embodiments, the control method for a dual-cooling air conditioner disclosed herein further includes: acquiring the outdoor ambient temperature on the outdoor side before controlling the adsorption refrigeration system to operate in a first mode or a second mode; and determining that both the outdoor coil temperature and the exhaust temperature are greater than the outdoor ambient temperature.

[0119] In this embodiment, the desorption rate of the first adsorption section is affected by the temperature of the outdoor heat exchanger, and the desorption rate of the second adsorption section is affected by the temperature of the compressor. At the same time, the heat dissipation and condensation rate of the intermediate heat dissipation section corresponding to the first and second adsorption sections is affected by the temperature of the outdoor environment. The normal operation of the desorption and cold storage mode of the adsorption refrigeration system requires that the temperature of the first and second adsorption sections be greater than the temperature of the intermediate heat dissipation section. Therefore, the outdoor coil temperature and the exhaust temperature need to be greater than the outdoor environment temperature.

[0120] Here, if the outdoor coil temperature is not higher than the outdoor ambient temperature, the first adsorption section will not be activated for desorption and cold storage; similarly, if the compressor exhaust temperature is not higher than the outdoor ambient temperature, the second adsorption section will not be activated for desorption and cold storage.

[0121] Optionally, the outdoor unit of the dual-cooling air conditioner is also equipped with a temperature sensor, which is located near the intermediate heat dissipation section. It can be used to detect the real-time temperature of the outdoor environment where the intermediate heat dissipation section is located. Therefore, in this embodiment, the outdoor ambient temperature detected by the temperature sensor can be compared with the outdoor coil temperature and the exhaust temperature.

[0122] In some optional embodiments, the control method for a dual-cooling air conditioner disclosed herein further includes: if the outdoor coil temperature is lower than the outdoor ambient temperature, controlling the adsorption refrigeration system to operate in a third mode.

[0123] In this embodiment, the third mode includes the evaporation section being disconnected from the first adsorption section and connected to the second adsorption section.

[0124] Here, when the outdoor coil temperature is lower than the outdoor ambient temperature, the temperature environment inside the first adsorption section is lower than the temperature environment of its corresponding intermediate heat dissipation section. Therefore, the gaseous adsorption medium generated by the desorption of the first adsorption section cannot be cooled and condensed in the intermediate heat dissipation section. Consequently, the evaporation section is disconnected from the first adsorption section, and the first adsorption section no longer supplies flow through the first adsorption medium. Furthermore, the evaporation section and the second adsorption section remain connected, allowing the adsorption refrigeration system to continue utilizing the higher-temperature second adsorption section for cold storage.

[0125] Optionally, the control method for dual-cooling air conditioners disclosed herein further includes: when the adsorption refrigeration system meets the preset cold storage completion conditions, controlling the exit from the first mode or the second mode.

[0126] Optionally, the conditions for completing cold storage include: the amount of adsorbent in the evaporation section is greater than or equal to a first medium amount threshold; another option is that the conditions for completing cold storage include: the amount of adsorbent in the first adsorption section is less than or equal to a second medium amount threshold; yet another option is that the amount of adsorbent in the second adsorption section is less than or equal to a third medium amount threshold.

[0127] The aforementioned optional cold storage completion conditions are determined based on changes in the amount of adsorbent medium in the evaporation section or the two adsorption sections. In desorption cold storage mode, the adsorbent medium in the first and second adsorption sections flows to the evaporation section. Therefore, when the amount of adsorbent medium in the evaporation section exceeds the first medium amount threshold, 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 first adsorption section is lower than the second medium amount threshold, or when the amount of adsorbent medium in the second adsorption section is lower than the second medium amount threshold, it indicates that the amount of adsorbent medium stored in the first or second adsorption section is small. Thus, the desorption cold storage mode can be exited.

[0128] Optionally, the first medium quantity threshold is 80%, 90%, etc., of the total amount of adsorbent medium.

[0129] The second medium quantity threshold is 10%, 15%, etc. of the total amount of adsorbent medium.

[0130] The third medium threshold is 10%, 15%, etc. of the total amount of adsorbent medium.

[0131] 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 operate at a first speed when the adsorption refrigeration system is operating in a first mode; and controlling the outdoor fan to operate at a second speed when the adsorption refrigeration system is operating in a second mode.

[0132] In this embodiment, the first rotational speed is less than the second rotational speed. Here, the rotational speed of the outdoor fan mainly affects the heat dissipation rate of the outdoor heat exchanger, and thus affects the temperature environment of the first adsorption section. In the second mode, since the portion of the gaseous adsorption medium with a higher temperature in the second adsorption section is diverted to the first adsorption section via the third adsorption medium transport path, controlling the outdoor fan to operate at a higher second rotational speed improves the heat dissipation effect of the outdoor heat exchanger, reduces the conduction of heat to the first adsorption section, and also dissipates heat from the first adsorption section. This allows some of the heat from the compressor in the first adsorption section to be dissipated to the outdoor environment first in the first heat dissipation section, thereby improving the heat dissipation efficiency of the subsequent flow to the intermediate heat dissipation section.

[0133] For example, when the dual-cooling air conditioner is operating in the first mode, the first speed of the outdoor fan is 400 r / min; while when the adsorption refrigeration system is operating in the second mode, the second speed of the outdoor fan is 600 r / min.

[0134] In some optional embodiments, after controlling the adsorption refrigeration system to exit the first mode or the second mode, if the triggering condition of the adsorption refrigeration mode is met, the adsorption refrigeration system is controlled to enter the adsorption refrigeration mode.

[0135] 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.

[0136] 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.

[0137] 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:

[0138] 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.

[0139] 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.

[0140] 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.

[0141] 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.

[0142] 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.

[0143] 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.

[0144] 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.

[0145] The aforementioned computer-readable storage medium may be a transient computer-readable storage medium or a non-transitory computer-readable storage medium.

[0146] 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.

[0147] 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.

[0148] 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.

[0149] 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.

[0150] 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 and an adsorption refrigeration system; wherein, the adsorption refrigeration system includes an evaporator disposed on the indoor side, a first adsorption section and a second adsorption section disposed on the outdoor heat exchanger and the compressor of the refrigerant heat exchange system, respectively, the evaporator being configurably connected to the first adsorption section and the second adsorption section, and the first adsorption section being configurably connected to the second adsorption section. The control method includes: During the operation of the refrigerant heat exchange system in refrigerant cooling mode, the outdoor coil temperature of the outdoor heat exchanger and the discharge temperature of the compressor are obtained. Calculate the temperature difference between the exhaust temperature and the outdoor coil temperature; If the temperature difference is less than or equal to the temperature difference threshold, the adsorption refrigeration system is controlled to operate in a first mode; wherein, the first mode includes the evaporation section being connected to the first adsorption section and the second adsorption section respectively, and the first adsorption section being disconnected from the second adsorption section; If the temperature difference is greater than the temperature difference threshold, the adsorption refrigeration system is controlled to operate in a second mode; wherein, the second mode includes the evaporation section being connected to the first adsorption section and the second adsorption section respectively, and the first adsorption section and the second adsorption section being kept in communication.

2. The control method according to claim 1, characterized in that, Also includes: When the adsorption refrigeration system is operating in the first mode, the flow rate of the first adsorption medium and the flow rate of the second adsorption medium are determined based on the temperature difference. Wherein, the first adsorption medium flow rate is the adsorption medium flow rate delivered from the first adsorption section to the evaporation section, and the second adsorption medium flow rate is the adsorption medium flow rate delivered from the second adsorption section to the evaporation section.

3. The control method according to claim 2, characterized in that, Determining the flow rate of the first adsorption medium and the flow rate of the second adsorption medium based on the temperature difference includes: From the preset first correlation relationship, obtain the first adsorption medium flow rate and the second adsorption medium flow rate corresponding to the temperature difference value; The first correlation includes the correspondence between the temperature difference and the flow rates of the first and second adsorption media.

4. The control method according to claim 1, characterized in that, Also includes: When the adsorption refrigeration system is operating in the second mode, the flow rates of the first adsorption medium, the second adsorption medium, and the third adsorption medium are determined based on the temperature difference. Wherein, the first adsorption medium flow rate is the adsorption medium flow rate delivered from the first adsorption section to the evaporation section, the second adsorption medium flow rate is the adsorption medium flow rate delivered from the second adsorption section to the evaporation section, and the third adsorption medium flow rate is the adsorption medium flow rate delivered from the second adsorption section to the first adsorption section.

5. The control method according to claim 4, characterized in that, Determining the flow rates of the first adsorption medium, the second adsorption medium, and the third adsorption medium based on the temperature difference includes: From the preset second correlation, obtain the first adsorption medium flow rate, the second adsorption medium flow rate, and the third adsorption medium flow rate corresponding to the temperature difference; The second correlation includes the correspondence between the temperature difference and the flow rates of the first, second, and third adsorption media.

6. The control method according to claim 1, characterized in that, Before controlling the adsorption refrigeration system to operate in the first mode or the second mode, the method further includes: Obtain the outdoor ambient temperature on the outdoor side; It is determined that both the outdoor coil temperature and the exhaust temperature are greater than the outdoor ambient temperature.

7. The control method according to claim 5, characterized in that, Also includes: If the outdoor coil temperature is lower than the outdoor ambient temperature, the adsorption refrigeration system is controlled to operate in the third mode. The third mode includes an evaporation section that is disconnected from the first adsorption section and connected to the second adsorption section.

8. A control device for a dual-cooling air conditioner, characterized in that, The dual-cooling air conditioner includes a refrigerant heat exchange system and an adsorption refrigeration system; wherein, the adsorption refrigeration system includes an evaporator disposed on the indoor side, a first adsorption section and a second adsorption section disposed on the outdoor heat exchanger and the compressor of the refrigerant heat exchange system, respectively, the evaporator being connected to the first adsorption section and the second adsorption section, and the first adsorption section being configurably connected to the second adsorption section. 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 7 when executing the program instructions.

9. A dual-cooling air conditioner, characterized in that, include: The refrigerant heat exchange system includes an indoor heat exchanger, an outdoor heat exchanger, a compressor, and a throttling device; One or more adsorption refrigeration systems, each of the adsorption refrigeration systems comprising: An evaporation section is located at the indoor heat exchanger of the refrigerant heat exchange system; The first adsorption section is located at the outdoor heat exchanger of the refrigerant heat exchange system, and a first adsorption medium transport flow path that can be switched on and off is constructed between the first adsorption section and the evaporation section. The second adsorption section is located at the compressor of the refrigerant heat exchange system. A second adsorption medium transport path that can be switched on and off is constructed between the second adsorption section and the evaporation section, and a third adsorption medium transport path that can be switched on and off is constructed between the second adsorption section and the first adsorption section. The control device for a dual-cooling air conditioner as described in claim 8.

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