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

Abstract

This application relates to the field of intelligent air conditioning refrigeration technology, and discloses a control method for a dual-cooling air conditioner. The control method includes: determining whether a compressor high-temperature protection condition is triggered; and, if the compressor high-temperature protection condition is triggered, controlling the adsorption refrigeration system to operate in compressor protection mode; wherein the compressor protection mode includes: the first adsorption section is disconnected from the evaporation section while the first adsorption section remains connected to the second adsorption section. The control method provided by this disclosure can, when the compressor high-temperature protection condition is determined to be met, utilize the transport of the adsorption medium between the two adsorption sections of the adsorption refrigeration system to transfer a large amount of heat from the compressor, thereby enabling the outdoor fan to dissipate heat from the compressor, effectively ensuring the safe and stable operation of the compressor and improving the overall performance of the air conditioner. This application also discloses a control device for a dual-cooling air conditioner and a dual-cooling air conditioner.

Description

Technical Field

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

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

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

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

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

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

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

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

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

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

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

[0012] Determine if the compressor's high-temperature protection condition has been triggered;

[0013] Under the condition that the compressor high-temperature protection is triggered, the adsorption refrigeration system is controlled to operate in compressor protection mode;

[0014] The compressor protection mode includes: the first adsorption section is disconnected from the evaporation section while the first adsorption section remains connected to the second adsorption section.

[0015] In some embodiments, the control device for a dual-cooling air conditioner includes:

[0016] 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.

[0017] In some embodiments, a dual-cooling air conditioner includes:

[0018] The refrigerant heat exchange system mainly includes an indoor heat exchanger, an outdoor heat exchanger, a compressor, and a throttling device;

[0019] One or more adsorption refrigeration systems, each adsorption refrigeration system comprising:

[0020] Evaporator section, located at the indoor heat exchanger of the refrigerant heat exchange system;

[0021] 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.

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

[0023] Control devices for dual-cooling air conditioners, as described in some of the embodiments above.

[0024] The control method, apparatus, and dual-cooling air conditioner provided in this disclosure can achieve the following technical effects:

[0025] The control method for dual-cooling air conditioners provided in this disclosure can transfer a large amount of heat from the compressor by utilizing the transport of the adsorption medium between the two adsorption sections of the adsorption refrigeration system, under the condition that the high-temperature protection conditions of the compressor are met. This allows the outdoor fan to dissipate heat from the compressor, effectively ensuring the safe and stable operation of the compressor. This disclosure does not simply superimpose two refrigeration systems into the same air conditioner. Instead, it cleverly combines two refrigeration structures and processes 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 performance of the air conditioner.

[0026] The above general description and the description below are exemplary and illustrative only and are not intended to limit this application. Attached Figure Description

[0027] 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:

[0028] Figure 1 This is a schematic diagram of the structure of a dual-cooling air conditioner provided in an embodiment of this disclosure;

[0029] Figure 2 This is a schematic flowchart of a control method for a dual-cooling air conditioner provided in an embodiment of this disclosure;

[0030] 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

[0031] 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.

[0032] Figure 1 This is a schematic diagram of the structure of a dual-cooling air conditioner provided in an embodiment of this disclosure.

[0033] like Figure 1As 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.

[0034] 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.

[0035] 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.

[0036] 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.

[0037] 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.

[0038] 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.

[0039] 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.

[0040] 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.

[0041] 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.

[0042] 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 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 the second adsorption section 22 during the adsorption refrigeration stage.

[0043] 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.

[0044] 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.

[0045] 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 horizontal or vertical 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.

[0046] 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.

[0047] 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.

[0048] 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.

[0049] 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.

[0050] 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.

[0051] 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.

[0052] 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.

[0053] 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.

[0054] 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.

[0055] In addition, the adsorption refrigeration system also includes an intermediate heat dissipation section 24; wherein, the 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 and 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 evaporation section 23 for storage.

[0056] Here, the 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 operating 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 ambient temperature. Similarly, due to the temperature of the compressor, the temperature of the second adsorption section 22 is also generally higher than the outdoor ambient temperature. Therefore, after the gaseous adsorbent medium released by the first adsorption section 21 and the second adsorption section 22 due to the high temperature flows into the 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.

[0057] Optionally, the middle heat dissipation section 24 is a horizontal flow heat sink.

[0058] In some embodiments, the intermediate heat dissipation section 24 is located on the back panel, side panel, or bottom plate of the outdoor unit of the refrigerant heat exchange system, and is 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.

[0059] Preferably, the intermediate heat dissipation section 24 is located at the bottom plate. In this configuration, the outdoor unit can shield the intermediate heat dissipation section 24 from sunlight, thereby providing a more suitable heat dissipation temperature environment for the intermediate heat dissipation section 24.

[0060] Alternatively, since the outdoor unit's back panel has an air inlet, the middle heat dissipation section 24 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 middle heat dissipation section 24, thus improving the heat dissipation effect.

[0061] 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 intermediate heat dissipation section 24 and the evaporation section 23 via the first adsorption medium transport flow path.

[0062] 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.

[0063] In the first desorption flow path, the first adsorption section 21, the 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 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.

[0064] Optionally, a one-way valve is provided in the first desorption flow path, which limits the adsorption medium to be transported only in the direction of "first adsorption section 21 → 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 intermediate heat dissipation section 24, or it can be provided in the flow path between the intermediate heat dissipation section 24 and the evaporation section 23.

[0065] 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.

[0066] 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".

[0067] 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 intermediate heat dissipation section 24. Therefore, the non-parallel flow path section of the first desorption flow path near the first adsorption section 21 can also be used for the transport of the adsorption medium during the adsorption cooling stage.

[0068] Similarly, a second adsorption medium transport path is constructed between the second adsorption section 22 and the first adsorption section 21, through which the adsorption medium can flow between the second adsorption section 22 and the first adsorption section 21.

[0069] 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.

[0070] 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.

[0071] In this embodiment, the adsorption refrigeration system further includes two control valves. A first control valve 25 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 26 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, the first control valve is disposed on a non-parallel flow path section of the first desorption flow path near the corresponding first adsorption section in the above embodiment. Therefore, the flow rate control for both the desorption and adsorption refrigeration stages of the first adsorption section 21 and the second adsorption section 22 can be achieved using only this one first control valve 25.

[0072] Alternatively, a control valve can be installed on each of the desorption and adsorption paths of the first adsorption medium conveying path, so as to control the on / off state and flow rate of the corresponding path.

[0073] The following describes the cooperative operation of the adsorption refrigeration system and the refrigerant heat exchange system in the embodiments of this disclosure:

[0074] 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.

[0075] 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, the adsorbent medium in the second adsorption section 22 flows into the first adsorption section 21 through the second adsorption medium transport path, and together with the gaseous adsorbent medium in the first adsorption section 21, it enters the intermediate heat dissipation section 24 through the desorption flow path for condensation. The liquid adsorbent medium obtained by condensation enters the evaporation section 23 as the stored "cold energy".

[0076] 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 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 through the first adsorption flow path. Then, a portion of the gaseous adsorption medium flows back to the second adsorption section 22 through the second adsorption medium transport flow path. 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 cooling of the indoor environment can be achieved.

[0077] Here, in both the desorption cold storage mode and the adsorption refrigeration mode, only one of the first adsorption units 21 can be activated, or both of the first adsorption units 21 and the second adsorption units 22 can be activated.

[0078] Figure 2 This is a schematic flowchart of a control method for a dual-cooling air conditioner provided in an embodiment of this disclosure.

[0079] 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:

[0080] S201. Determine whether the compressor's high-temperature protection condition has been triggered;

[0081] In some optional embodiments, the compressor high-temperature protection conditions include: the compressor housing temperature is greater than or equal to the housing temperature threshold, and the outdoor ambient temperature on the outdoor side is greater than or equal to the outer ambient temperature threshold.

[0082] Here, the casing temperature threshold is the upper limit of the temperature range used to characterize the compressor in a safe operating state. Therefore, when the actual casing temperature of the compressor exceeds this upper limit, the compressor's own temperature is also high, which can easily lead to malfunctions. When the actual casing temperature of the compressor does not exceed this upper limit, the compressor's own temperature is also low, and the probability of malfunctions caused by excessive temperature is small.

[0083] Generally, the conventional way for a compressor to dissipate heat is through heat exchange with the outdoor environment. Therefore, the outdoor ambient temperature affects the efficiency of the compressor's natural heat dissipation in this process. Here, the ambient temperature threshold is a critical value used to characterize the degree of inhibition of the compressor's natural heat dissipation by the outdoor environment. When the outdoor ambient temperature is greater than or equal to this threshold, the inhibition of the compressor's natural heat dissipation is greater, and the natural heat dissipation effect is better. Conversely, when the outdoor ambient temperature is lower, the inhibition of the compressor's natural heat dissipation is less, and the natural heat dissipation effect is poor.

[0084] In this embodiment, when the compressor's casing temperature exceeds the upper limit of the safe operating temperature range and the outdoor environment significantly inhibits the compressor's natural heat dissipation, the conditions for triggering the compressor's high-temperature protection can be determined.

[0085] Optionally, the outdoor unit of the dual-cooling air conditioner is equipped with two temperature sensors. One temperature sensor is specifically installed on the compressor body, which can be used to detect the real-time casing temperature of the compressor; the other temperature sensor is installed on the outer wall of the outdoor unit and away from the air inlet and outlet, which can be used to detect the real-time temperature of the outdoor environment. In this embodiment, before determining whether to trigger the compressor high-temperature protection condition, the compressor casing temperature and the outdoor ambient temperature on the outdoor side can be obtained through the two temperature sensors respectively.

[0086] S202. Under the condition that the high temperature protection of the compressor is triggered, control the adsorption refrigeration system to operate in compressor protection mode.

[0087] In this embodiment, the compressor protection mode includes: the first adsorption section is disconnected from the evaporation section while the first adsorption section remains connected to the second adsorption section.

[0088] Here, in the compressor protection mode, the first adsorption section is disconnected from the evaporation section, preventing the adsorbed medium desorbed by both sections from being transported to the evaporation section via the adsorption medium transport path. Given that the compressor's high-temperature protection condition is triggered, the outdoor ambient temperature is also relatively high. Since the intermediate heat dissipation section of the adsorption refrigeration system condenses the gaseous adsorbed medium through heat exchange with the outdoor environment, its actual heat dissipation and condensation effect is poor when the outdoor and indoor temperatures are high. This can cause a significant amount of gaseous adsorbed medium to flow into the evaporation section without condensation, increasing the pressure of the gaseous adsorbed medium in the evaporation section and transferring excessive heat to it. This causes the evaporation section to dissipate heat into the indoor environment, leading to a rise in indoor temperature. Therefore, to avoid these problems, this embodiment controls the disconnection of the first adsorption section from the evaporation section.

[0089] Meanwhile, in compressor protection mode, the first adsorption section and the second adsorption section remain connected. Here, the adsorption and desorption efficiency of the first adsorption section is mainly affected by the temperature of the outdoor heat exchanger of the refrigerant heat exchange system, while the adsorption and desorption efficiency of the second adsorption section is mainly affected by the temperature of the compressor of the refrigerant heat exchange system. Under the premise of determining the conditions for triggering the compressor high-temperature protection, the temperature of the compressor casing is much higher than the temperature of the outdoor heat exchanger. Therefore, under the effect of the temperature difference between the first adsorption section and the second adsorption section, the second adsorption section produces more gaseous adsorption medium, which is transported to the first adsorption section along the second adsorption medium. Here, since the first adsorption section is also affected by the wind force of the outdoor fan, the heat transferred from the second adsorption section to the first adsorption section can be dissipated into the outdoor environment by the outdoor fan, thereby achieving a better heat dissipation effect on the compressor.

[0090] Here, the first adsorption section and the evaporation section are connected through a first adsorption medium transport flow path. A control valve is provided on the first adsorption medium transport flow path to control its on / off state. Therefore, the first adsorption section and the evaporation section can be disconnected by controlling the closing of the control valve. In addition, the first adsorption section and the second adsorption section are connected through a second adsorption medium transport flow path. A control valve is also provided on the second adsorption medium transport flow path to control its on / off state. Therefore, the first adsorption section and the second adsorption section can be connected by controlling the opening of the control valve.

[0091] The control method for dual-cooling air conditioners provided in this disclosure can transfer a large amount of heat from the compressor by utilizing the transport of the adsorption medium between the two adsorption sections of the adsorption refrigeration system, under the condition that the high-temperature protection conditions of the compressor are met. This allows the outdoor fan to dissipate heat from the compressor, effectively ensuring the safe and stable operation of the compressor. This disclosure does not simply superimpose two refrigeration systems into the same air conditioner. Instead, it cleverly combines two refrigeration structures and processes 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 performance of the air conditioner.

[0092] In some optional embodiments, the operating parameters of the compressor protection mode are determined based on the temperature difference between the shell temperature and the external coil temperature of the outdoor heat exchanger.

[0093] Optionally, the operating parameters of the compressor protection mode include the flow rate of the adsorption medium transported from the second adsorption section to the first adsorption section. Here, the temperature difference between the shell temperature and the external coil temperature of the outdoor heat exchanger can directly affect the temperature difference between the first and second adsorption sections, which in turn affects the speed at which the adsorption medium is transported from the second adsorption section to the first adsorption section. Therefore, in this embodiment, the flow rate of the adsorption medium transported from the second adsorption section to the first adsorption section is adjusted according to the temperature difference between the shell temperature and the external coil temperature of the outdoor heat exchanger, so that the flow rate of the adsorption medium can be matched with the actual transport speed of the adsorption medium, ensuring the heat dissipation effect on the compressor.

[0094] Optionally, the operating parameters of the compressor protection mode can be determined based on the temperature difference between the shell temperature and the external coil temperature of the outdoor heat exchanger, including: finding the adsorption medium flow rate that matches the temperature difference from a preset correlation.

[0095] Here, the correlation includes the correspondence between one or more temperature differences and the adsorption medium flow rate. For example, when the temperature difference is ΔT1, the corresponding adsorption medium flow rate is q1; when the temperature difference is ΔT2, the corresponding adsorption medium flow rate is q2, and so on. In this correlation, the temperature difference and the adsorption medium flow rate are positively correlated. That is, the higher the temperature difference between the shell temperature and the external coil temperature of the outdoor heat exchanger, the larger the adsorption medium flow rate should be set to meet the required delivery speed of the adsorption medium from the first adsorption section to the second adsorption section.

[0096] Optionally, the control valve located on the second adsorption medium flow path can not only control the corresponding state of its corresponding second adsorption medium conveying flow path, but also adjust the flow rate of the second adsorption medium flowing through the second adsorption medium conveying flow path by adjusting its own flow rate opening. Therefore, in this embodiment, after finding the adsorption medium flow rate that matches the temperature difference, the flow rate opening of the control valve can be adjusted according to the adsorption medium flow rate.

[0097] In some optional embodiments, the control method for a dual-cooling air conditioner disclosed herein further includes: during the operation of the compressor protection mode of the adsorption refrigeration system, acquiring the amount of adsorption medium in the second adsorption section; when the amount of adsorption medium in the second adsorption section does not meet the preset medium amount condition, controlling the exit from the compressor protection mode.

[0098] Here, the heat of the compressor is mainly absorbed by the existing adsorption medium in the second adsorption section. Therefore, in order to ensure the heat dissipation effect of the compressor in the compressor protection mode, it is determined whether the second adsorption section meets the preset adsorption medium quantity condition during the operation of the compressor protection mode. Here, the adsorption medium quantity condition is used to characterize the minimum amount of adsorption medium required to fully dissipate heat from the compressor.

[0099] Optionally, the medium quantity condition includes: the adsorbed medium quantity is greater than or equal to a set medium quantity threshold. The set medium quantity threshold is a critical value representing the minimum adsorbed medium quantity required for normal cooling of the compressor. Therefore, when the adsorbed medium quantity in the second adsorption section is less than the set medium quantity threshold, it indicates that the compressor protection mode cannot maintain a good cooling effect on the compressor, and thus the compressor protection mode is exited.

[0100] Optionally, the set medium amount threshold is 10%-20% of the maximum amount of adsorbent medium that the second adsorption section can adsorb.

[0101] In some embodiments, obtaining the amount of adsorption medium in the second adsorption section includes: detecting a second weight of the second adsorption section; and determining the amount of adsorption medium in the second adsorption section based on the second weight.

[0102] In this embodiment, a weighing sensor is provided at the bottom of the second adsorption section. The weighing sensor can be used to detect the real-time weight of the entire second adsorption section. Here, before the compressor protection mode is activated, most of the adsorption medium is concentrated in the second adsorption section. Therefore, the weight detected by the weighing sensor at this time is mainly the sum of the weight of the adsorption medium, the adsorbent, and the weight of the second adsorption section itself. The weights of the adsorbent and the weight of the second adsorption section itself are known. Therefore, the amount of adsorption medium at present can be calculated based on this.

[0103] In this embodiment, the dual-cooling air conditioner also has a preset correlation, which includes a one-to-one correspondence between the weight of different adsorption parts and the amount of adsorption medium. For example, when the weight of the adsorption part is A, the amount of adsorption medium is a; and when the weight of the adsorption part is B, the amount of adsorption medium is b, and so on.

[0104] In this way, the amount of the second adsorption medium can be obtained from the preset correlation based on the weight of the second adsorption section.

[0105] 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 compressor protection mode is not running; and controlling the outdoor fan to operate at a second speed when the compressor protection mode is running.

[0106] In this embodiment, the first rotational speed is less than the second rotational speed. Here, in the non-operational compressor protection mode, the outdoor fan is mainly used to dissipate heat from the outdoor heat exchanger; while in the operation of the compressor protection mode, the outdoor fan is controlled to operate at a higher second rotational speed to improve the heat dissipation effect of the outdoor heat exchanger, reduce the temperature of the first adsorption section, thereby increasing the heat dissipation effect on the adsorption medium from the second adsorption section, and enabling the first adsorption section to adsorb more adsorption medium from the second adsorption section, thereby improving the heat dissipation effect on the compressor.

[0107] For example, when the compressor protection mode is not running, the first speed of the outdoor fan is 400 r / min; while when the compressor protection mode is running, the second speed of the outdoor fan is 600 r / min.

[0108] 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.

[0109] 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:

[0110] 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.

[0111] 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.

[0112] 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.

[0113] 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.

[0114] 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.

[0115] 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.

[0116] 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.

[0117] The aforementioned computer-readable storage medium may be a transient computer-readable storage medium or a non-transitory computer-readable storage medium.

[0118] 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.

[0119] 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.

[0120] 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.

[0121] 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.

[0122] 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 unit and a second adsorption unit disposed on the outdoor heat exchanger and the compressor of the refrigerant heat exchange system, respectively, the evaporator and the first adsorption unit are connected in a shunt, and the second adsorption unit is connected in a shunt via the first adsorption unit to the evaporator. The control method includes: Determine if the compressor's high-temperature protection condition has been triggered; If the conditions for triggering the compressor's high-temperature protection are determined, the adsorption refrigeration system is controlled to operate in compressor protection mode; The compressor protection mode includes: the first adsorption section is disconnected from the evaporation section while the first adsorption section remains connected to the second adsorption section.

2. The control method according to claim 1, characterized in that, The high-temperature protection conditions for the compressor include: The compressor casing temperature is greater than or equal to the casing temperature threshold, and the outdoor ambient temperature on the outdoor side is greater than or equal to the outer ambient temperature threshold.

3. The control method according to claim 2, characterized in that, The operating parameters of the compressor protection mode are determined based on the temperature difference between the shell temperature and the external coil temperature of the outdoor heat exchanger.

4. The control method according to claim 3, characterized in that, The operating parameters include the flow rate of the adsorption medium being transported from the second adsorption section to the first adsorption section; The determination of the compressor protection mode operating parameters based on the temperature difference between the shell temperature and the external coil temperature of the outdoor heat exchanger includes: Find the adsorption medium flow rate that matches the temperature difference value from the preset correlation; The correlation mentioned therein includes the correspondence between one or more temperature differences and the flow rate of the adsorption medium.

5. The control method according to claim 4, characterized in that, In the aforementioned correlation, the temperature difference is positively correlated with the flow rate of the adsorption medium.

6. The control method according to claim 1, characterized in that, Also includes: During the operation of the compressor protection mode of the adsorption refrigeration system, the amount of adsorption medium in the second adsorption section is obtained; When the amount of adsorption medium in the second adsorption section does not meet the preset medium amount condition, the compressor protection mode is exited.

7. The control method according to claim 6, characterized in that, Obtaining the amount of adsorption medium in the second adsorption section includes: Detect the second weight of the second adsorption section; The amount of adsorption medium in the second adsorption section is determined based on the second weight.

8. The control method according to claim 6 or 7, characterized in that, The medium quantity condition includes: the adsorption medium quantity is greater than or equal to the set medium quantity threshold.

9. 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 unit and a second adsorption unit disposed on the outdoor heat exchanger and the compressor of the refrigerant heat exchange system, respectively, the evaporator and the first adsorption unit are connected in a shunt, and the second adsorption unit is connected in a shunt via the first adsorption unit to the evaporator. 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 mainly 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, and a second adsorption medium transport flow 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 9.

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