Method, device, air conditioner, and storage medium for controlling air conditioner energy saving

Abstract

The present application discloses a method for controlling air conditioner energy saving. The air conditioner includes: a throttling heat exchanger; the throttling heat exchanger includes: multiple heat exchange branches; the air conditioner further includes: a first refrigerant circulation loop and a second refrigerant circulation loop sharing the throttling heat exchanger; by switching the on-off states of the first refrigerant circulation loop and the second refrigerant circulation loop, each heat exchange branch can be switched between a parallel connection state and a series connection state; the method includes: when the air conditioner operates in the cooling mode, in response to an instruction to turn on energy saving, determine the target operating power according to the ambient temperature; determine the target states of each heat exchange branch according to the target operating power; control the on-off states of the first refrigerant circulation loop and the second refrigerant circulation loop according to the target states. Energy saving is achieved by making the flow mode of the refrigerant match the target operating power, and the energy saving effect can be ensured to be stable in a better state. The present application also discloses a device, an air conditioner and a storage medium for controlling air conditioner energy saving.

Description

Technical Field

[0001] This application relates to the technical field of air conditioners, for example, to a method, a device, an air conditioner and a storage medium for controlling air conditioner energy saving. Background Art

[0002] Air conditioners are commonly used household appliances in production and life, mainly used to adjust the indoor temperature. Air conditioner energy saving has become an essential topic in the industry.

[0003] A related art discloses an air conditioner control method, including: obtaining the outdoor ambient temperature; detecting the real-time current of the air conditioner; receiving an energy-saving mode start signal, and adjusting the real-time current of the air conditioner according to the outdoor ambient temperature and preset ambient temperature information. Adjusting the real-time current of the air conditioner according to the outdoor ambient temperature and preset ambient temperature information includes: obtaining the theoretical current when the air conditioner operates according to the current set conditions; when the outdoor ambient temperature is less than the first preset ambient temperature, adjusting the real-time current of the air conditioner so that the real-time current is less than the theoretical current.

[0004] In the above method, the purpose of energy saving is achieved by restricting the current. However, when the voltage changes, the current also changes. In this case, the effect of achieving energy saving by restricting the current is not ideal. Summary of the Invention

[0005] To have a basic understanding of some aspects of the disclosed embodiments, a simple summary is given below. The summary is not a general review, nor is it intended to identify key / important elements or delineate the protection scope of these embodiments, but rather serves as a preface to the subsequent detailed description.

[0006] The embodiments of the present disclosure provide a method, a device, an air conditioner and a storage medium for controlling air conditioner energy saving to ensure the energy-saving effect of the air conditioner.

[0007] In some embodiments, the air conditioner includes: a throttling heat exchanger; the throttling heat exchanger includes: a plurality of heat exchange branches; the air conditioner further includes: a first refrigerant circulation loop and a second refrigerant circulation loop sharing the throttling heat exchanger; by switching the on / off states of the first refrigerant circulation loop and the second refrigerant circulation loop, each heat exchange branch can be switched between a parallel connection state and a series connection state; the method includes: in the case where the air conditioner operates in a cooling mode, in response to an instruction to turn on energy saving, determining a target operating power according to the ambient temperature; determining a target state of each heat exchange branch according to the target operating power; controlling the on / off states of the first refrigerant circulation loop and the second refrigerant circulation loop according to the target state.

[0008] In some embodiments, the device includes a processor and a memory storing program instructions, and the processor is configured to execute the foregoing method for controlling air conditioner energy saving when the program instructions are running.

[0009] In some embodiments, the air conditioner includes a throttling heat exchanger; the throttling heat exchanger includes multiple heat exchange branches; the air conditioner further includes a first refrigerant circulation loop and a second refrigerant circulation loop sharing the throttling heat exchanger; by switching the on-off states of the first refrigerant circulation loop and the second refrigerant circulation loop, each heat exchange branch can be switched between a parallel connection state and a series connection state; and the device for controlling air conditioner energy saving as described above.

[0010] In some embodiments, the storage medium stores program instructions, and the program instructions execute the foregoing method for controlling air conditioner energy saving when running.

[0011] The method, device, air conditioner, and storage medium for controlling air conditioner energy saving provided by the embodiments of the present disclosure can achieve the following technical effects:

[0012] After responding to the instruction to enable energy saving, determine the target operating power based on the ambient temperature. In this way, when the air conditioner operates at the target power, on the one hand, a certain energy saving effect can be achieved, and on the other hand, the operating power of the air conditioner can be ensured to match the ambient temperature, thereby ensuring the cooling effect. Based on the target operating power, determine the target state of each heat exchange branch as a parallel connection state or a series connection state. Then control the on-off states of the first refrigerant circulation loop and the second refrigerant circulation loop so that the states of each heat exchange branch are in the target state. In this way, the flow mode of the refrigerant, that is, single-path flow or multi-path flow, is matched with the target operating power, so as to achieve the energy saving effect. Compared with the method of achieving energy saving by restricting current, adjusting the flow mode of the refrigerant is not affected by voltage. Therefore, the energy saving effect can be ensured to be stable in a better state.

[0013] The above general description and the following description are only exemplary and explanatory, and are not used to limit this application. Description of the Drawings

[0014] One or more embodiments are exemplarily illustrated by corresponding drawings. These exemplary illustrations and the drawings do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings are shown as similar elements. The drawings do not constitute a scale limitation, and among them:

[0015] Figure 1 is a schematic structural diagram of the throttling heat exchanger provided by the embodiments of the present disclosure;

[0016] Figure 2It is a schematic diagram of refrigerant flow when the throttling heat exchanger serves as the outdoor heat exchanger during the heating operation of the air conditioner provided by the embodiments of the present disclosure;

[0017] Figure 3 It is a schematic diagram of refrigerant flow when the throttling heat exchanger serves as the outdoor heat exchanger during the cooling operation of the air conditioner provided by the embodiments of the present disclosure;

[0018] Figure 4 It is a schematic diagram of the structure of the first liquid distributor provided by the embodiments of the present disclosure;

[0019] Figure 5 It is a schematic diagram of the structure of another first liquid distributor provided by the embodiments of the present disclosure;

[0020] Figure 6 It is a schematic diagram of refrigerant flow when the first refrigerant circulation loop of the air conditioner provided by the embodiments of the present disclosure is connected;

[0021] Figure 7 It is a schematic diagram of refrigerant flow when the second refrigerant circulation loop of the air conditioner provided by the embodiments of the present disclosure is connected;

[0022] Figure 8 It is a schematic diagram of a method for controlling the energy saving of the air conditioner provided by the embodiments of the present disclosure;

[0023] Figure 9 It is a schematic diagram of another method for controlling the energy saving of the air conditioner provided by the embodiments of the present disclosure;

[0024] Figure 10 It is a schematic diagram of another method for controlling the energy saving of the air conditioner provided by the embodiments of the present disclosure;

[0025] Figure 11 It is a schematic diagram of another method for controlling the energy saving of the air conditioner provided by the embodiments of the present disclosure;

[0026] Figure 12 It is a schematic diagram of an application provided by the embodiments of the present disclosure;

[0027] Figure 13 It is a schematic diagram of a device for controlling the energy saving of the air conditioner provided by the embodiments of the present disclosure;

[0028] Figure 14 It is a schematic diagram of another device for controlling the energy saving of the air conditioner provided by the embodiments of the present disclosure.

[0029] Reference numerals:

[0030] 1. Compressor; 2. Outdoor heat exchanger; 3. Indoor heat exchanger; 4. First pipeline; 5. Second pipeline; 6. Third pipeline; 7. Fourth pipeline; 8. Fifth pipeline; 9. First on-off valve; 10. Second on-off valve; 11. Third on-off valve; 12. Fourth on-off valve;

[0031] 200. Throttle heat exchanger; 210. Heat exchange pipeline; 211. First heat exchange branch; 212. Second heat exchange branch; 213. Third heat exchange branch; 221. First liquid distributor; 222. Second liquid distributor; 223. Third liquid distributor; 224. Fourth liquid distributor; 2211. First liquid distribution branch; 2212. Second liquid distribution branch; 2213. Confluence pipe; 2214. Confluence cavity; 2215. First branch cavity; 2216. Second branch cavity; 2217. First pipe section; 2218. Second pipe section; 231. First throttling element; 232. Second throttling element; 240. Bypass pipeline; 241. Solenoid valve. Specific embodiments

[0032] In order to understand the features and technical content of the embodiments of the present disclosure in more detail, the implementation of the embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings. The accompanying drawings are for reference and illustration only and are not intended to limit the embodiments of the present disclosure. In the following technical description, for the sake of explanation, numerous details are provided to give 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 shown in a simplified manner to simplify the drawings.

[0033] In the embodiments of the present disclosure, the terms "first", "second", etc. in the specification and claims of the embodiments of the present disclosure and the above-mentioned drawings are used to distinguish similar objects and do not have to be used to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances so as to implement the embodiments of the present disclosure described herein. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion.

[0034] Unless otherwise specified, the term "plurality" means two or more.

[0035] In the embodiments of the present disclosure, the character " / " indicates that the objects before and after are in an "or" relationship. For example, A / B means: A or B.

[0036] The term "and / or" is a description of the associated relationship of an object and indicates that three relationships can exist. For example, A and / or B means: A or B, or, A and B these three relationships.

[0037] The term "corresponding" may refer to an associated relationship or a binding relationship. A corresponding to B means that there is an associated relationship or a binding relationship between A and B.

[0038] The air conditioner includes an indoor unit and an outdoor unit. The indoor unit is provided with an indoor heat exchanger, an indoor fan, etc., which can be used to realize functions such as heat exchange between the refrigerant and the indoor environment. The outdoor unit is provided with an outdoor heat exchanger, an outdoor fan, a compressor, a gas-liquid separator, etc., which can be used to realize functions such as heat exchange between the refrigerant and the outdoor environment, refrigerant compression, and refrigerant throttling.

[0039] Components such as the indoor heat exchanger, the outdoor heat exchanger, the compressor, and the gas-liquid separator are connected by refrigerant pipelines to jointly form a refrigerant circulation system for circulating and transporting the refrigerant between the indoor and outdoor units. When the air conditioner operates in the cooling mode and the heating mode, the optimal flow paths required by the outdoor heat exchanger are different. In the embodiments of the present disclosure, a throttling heat exchanger is provided, which realizes that when the air conditioner operates in the cooling mode, the heat exchange branches of the throttling heat exchanger are fewer. At the same time, when the air conditioner operates in the heating mode, the heat exchange branches of the throttling heat exchanger are more. The throttling heat exchanger realizes variable splitting of the refrigerant flow path, and can simultaneously make the air conditioner have the best flow path in both the cooling mode and the heating mode. As Figure 2 and Figure 3 shown.

[0040] Combined with Figure 1 shown, the embodiments of the present disclosure also provide a throttling heat exchanger. The throttling heat exchanger 200 includes a heat exchange pipeline 210, a first liquid distributor 221, and a throttling element. The heat exchange pipeline 210 includes multiple heat exchange branches connected in parallel. The first liquid distributor 221 includes a main pipe and multiple liquid distribution branches, and the multiple liquid distribution branches are connected to the multiple heat exchange branches. The throttling element is arranged between the heat exchange branch and the first liquid distributor 221 to throttle the refrigerant after being split by the first liquid distributor 221 and before entering the heat exchange branch.

[0041] It can be understood that, combined with Figure 2 and Figure 3 shown, when the flow direction of the refrigerant in the throttling heat exchanger 200 is different, the connection forms of the heat exchange branches are also different, specifically manifested as multiple heat exchange branches connected in parallel, or the heat exchange branches are reduced. In this way, variable splitting of the throttling heat exchanger 200 is realized.

[0042] As Figure 1 shown, in the throttling heat exchanger 200 provided by the embodiments of the present disclosure, the throttling element is arranged between the heat exchange branch and the first liquid distributor 221, and can throttle the refrigerant after being split by the first liquid distributor 221 and before entering the heat exchange branch. That is, before the refrigerant flowing into the outdoor heat exchanger is split by the first liquid distributor 221, pressure reduction and throttling are not performed. At this time, the liquid content of the refrigerant entering the first liquid distributor 221 is relatively high, which improves the liquid distribution uniformity of the first liquid distributor 221, and further improves the heat exchange uniformity of the throttling heat exchanger 200.

[0043] Optionally, the first liquid distributor 221 includes a first liquid distribution branch pipe 2211 and a second liquid distribution branch pipe 2212. The first liquid distribution branch pipe 2211 is communicated with one or more heat exchange branch pipes, and the second liquid distribution branch pipe 2212 is communicated with one or more heat exchange branch pipes. Wherein, a first throttling element 231 is arranged on the first liquid distribution branch pipe 2211, and a second liquid distribution element is arranged on the second liquid distribution branch pipe 2212.

[0044] A throttling element is arranged at each liquid distribution branch pipe of the first liquid distributor 221 to throttle the refrigerant flowing out through different liquid distribution branch pipes respectively. As Figure 1 shown.

[0045] Optionally, the heat exchange pipeline 210 includes an upper heat exchange pipeline and a lower heat exchange pipeline. The upper heat exchange pipeline includes a first heat exchange branch 211 and a second heat exchange branch 212 that are connected in parallel. The lower heat exchange pipeline includes a third heat exchange branch 213. Wherein, the refrigerant outlets of the first heat exchange branch 211 and the second heat exchange branch 212 are communicated with the second liquid distributor 222, and the refrigerant inlets of the second heat exchange branch 212 and the third heat exchange branch 213 are communicated with the third liquid distributor 223. The refrigerant inlet of the first heat exchange branch 211 is communicated with the fourth liquid distributor 224. The first throttling element 231 is arranged between the first liquid distribution branch pipe 2211 and the second liquid distributor 222, and the second throttling element 232 is arranged between the second liquid distribution branch pipe 2212 and the third heat exchange branch 213. Optionally, the throttling heat exchanger 200 further includes a bypass pipeline 240. The bypass pipeline 240 communicates the third liquid distributor 223 with the fourth liquid distributor 224, and an electromagnetic valve 241 is arranged on the bypass pipeline 240.

[0046] When the air conditioner operates in the heating mode and the throttling heat exchanger 200 is used as an outdoor heat exchanger, the refrigerant flow path in the throttling heat exchanger 200 is as Figure 2 shown. Control the electromagnetic valve 241 between the fourth liquid distributor 224 and the third liquid distributor 223 to be turned on. At the same time, control the electronic expansion valve between the second liquid distributor 222 and the first liquid distribution branch pipe 2211 to be turned on. Specifically, the low-temperature and low-pressure refrigerant enters the first liquid distributor 221 through the main pipe of the throttling heat exchanger 200, and after being split, it enters the first throttling element 231 and the second throttling element 232 respectively. After passing through the first throttling element 231, the refrigerant enters the first heat exchange branch 211 and the second heat exchange branch 212 through the second liquid distributor 222 for heat exchange. After passing through the second throttling element 232, the refrigerant enters the third heat exchange branch 213 for heat exchange. After the heat exchange in the second heat exchange branch 212 and the third heat exchange branch 213 is completed, they converge through the third liquid distributor 223 and further flow out through the fourth liquid distributor 224; after the heat exchange in the first heat exchange branch 211 is completed, it flows out through the fourth liquid distributor 224. That is, the first heat exchange branch 211, the second heat exchange branch 212 and the third heat exchange branch 213 are in a state of being connected in parallel under the heating condition.

[0047] When the air conditioner operates in the refrigeration mode and the throttling heat exchanger 200 serves as the outdoor heat exchanger, the refrigerant flow path in the throttling heat exchanger 200 is as follows Figure 3 shown. Control the solenoid valve 241 between the fourth distributor 224 and the third distributor 223 to close. At the same time, control the electronic expansion valve between the second distributor 222 and the first distribution branch pipe 2211 to close. Specifically, after the high-temperature and high-pressure refrigerant enters the fourth distributor 224 through the other main pipe of the throttling heat exchanger 200, it flows into the first heat exchange branch 211, then flows into the second heat exchange branch 212 through the second distributor 222, then flows into the third heat exchange branch 213 through the third distributor 223. The refrigerant flowing out of the third heat exchange branch 213 is throttled and depressurized by the second throttling element 232 and then flows out through the first distributor 221. That is, the first heat exchange branch 211, the second heat exchange branch 212, and the third heat exchange branch 213 are in a series-connected state under the refrigeration condition.

[0048] Optionally, the first throttling element 231 is an electronic expansion valve. In this way, the flow path of the refrigerant in the throttling heat exchanger 200 can be made different by controlling the opening or closing of the electronic expansion valve.

[0049] To achieve variable flow splitting of the outdoor heat exchanger, a check valve can also be set at the position where the electronic expansion valve is set. Optionally, the second throttling element 232 is a capillary tube.

[0050] Optionally, the first distributor includes a housing and a manifold pipe 2213. The interior of the housing has a liquid distribution cavity. The housing is provided with a first liquid distribution port and a second liquid distribution port. The manifold pipe 2213 includes a first pipe section 2217 and a second pipe section 2218 that are bent and connected. The first pipe section 2217 is directly connected to the liquid distribution cavity. The first distribution branch pipe 2211 is connected to the liquid distribution cavity through the first liquid distribution port, and the second distribution branch pipe 2212 is connected to the liquid distribution cavity through the second liquid distribution port. Among them, the plane where the axes of the first pipe section 2217 and the second pipe section 2218 are located is the first plane, and the plane where the axes of the first distribution branch pipe 2211 and the second distribution branch pipe 2212 are located is the second plane. The first plane and the second plane are not perpendicular. As Figure 4 and Figure 5 shown.

[0051] Optionally, the liquid distribution cavity includes a manifold cavity 2214, a first branch cavity 2215, and a second branch cavity 2216. The first distribution branch pipe 2211 is connected to the first branch cavity 2215 through the first liquid distribution port, and the second distribution branch pipe 2212 is connected to the second branch cavity 2216 through the second liquid distribution port.

[0052] The manifold 2213 includes a first pipe section 2217 and a second pipe section 2218. The plane where the axes of the first pipe section 2217 and the second pipe section 2218 are located is the first plane, and the angle between the first plane and the second plane is e. As Figure 5 shown. The first plane and the second plane are not perpendicular. It can be understood that the angle e between the first plane and the second plane is less than 90°. Optionally, the angle between the first plane and the second plane is counted as the acute angle formed by the two. The first plane and the second plane are not perpendicular. In this way, the amount of refrigerant entering the first liquid separation branch pipe 2211 and the second liquid separation branch pipe 2212 through the first pipe section 2217 is different. For example, when the angle between the first plane and the second plane is on the side of the first liquid separation branch pipe 2211, under the action of gravity, the flow rate of the refrigerant flowing to the second liquid separation branch pipe 2212 is greater than the flow rate flowing to the first liquid separation branch pipe 2211. Similarly, when the angle between the first plane and the second plane is on the side of the second liquid separation branch pipe 2212, under the action of gravity, the flow rate of the refrigerant flowing to the first liquid separation branch pipe 2211 is greater than the flow rate of the second liquid separation branch pipe 2212.

[0053] As Figure 2 shown in the throttling heat exchanger, after the refrigerant is split by the first liquid separator 221, it flows into three parallel heat exchange branches respectively. Among them, as Figure 2 shown in the direction, after the refrigerant passes through the liquid separation branch pipe on the left side of the first liquid separator 221, it only flows into the third heat exchange branch 213. After the refrigerant passes through the liquid separation branch pipe on the right side of the first liquid separator 221, it flows into two heat exchange branches. It can be seen that after the refrigerant passes through the first liquid separator 221, the amount of refrigerant required for the two liquid separation branch pipes of the first liquid separator 221 is different. As Figure 2 shown in the throttling heat exchanger, the amount of refrigerant required for the liquid separation branch pipe on the right side is about twice that of the liquid separation branch pipe on the left side. The liquid separator provided in the embodiments of the present disclosure utilizes the gravity of the refrigerant during the flow process. By setting the angle between the first plane where the axes of the first pipe section 2217 and the second pipe section 2218 of the manifold 2213 are located and the second plane where the axes of the first liquid separation branch pipe 2211 and the second liquid separation branch pipe 2212 are located, it realizes that the amount of refrigerant flowing out of different liquid separation branch pipes of the liquid separator is different, meets the requirement of different amounts of refrigerant required for the liquid separation branch pipes, and further improves the heat exchange efficiency of the throttling heat exchanger.

[0054] Optionally, the angle between the first plane and the second plane is less than 90 degrees, so that the refrigerant realizes a flow deviation under the action of gravity after flowing through the first pipe section 2217 of the manifold 2213, and further makes the amount of cold energy flowing into the first liquid separation branch pipe 2211 and the second liquid separation branch pipe 2212 different.

[0055] Optionally, the inner diameter of the first pipe section 2217 of the manifold 2213 is larger than the inner diameter of the first liquid separation branch pipe 2211.

[0056] Optionally, the inner diameter of the first liquid distribution branch pipe 2211 is larger than that of the second liquid distribution branch pipe 2212. Optionally, the first pipe section 2217 of the confluence pipe 2213 is inclined towards the second liquid distribution branch pipe 2212. Then, under the action of gravity, further in cooperation with the inner diameter of the first liquid distribution branch pipe 2211 being larger than that of the second liquid distribution branch pipe 2212, more refrigerant flows into the first liquid distribution branch pipe 2211, further increasing the refrigerant flow rate difference between the two liquid distribution branch pipes.

[0057] By setting an included angle between the first plane where the axes of the first pipe section 2217 and the second pipe section 2218 of the confluence pipe 2213 are located and the second plane where the axes of the two liquid distribution branch pipes are located, and further in cooperation with the technical solution of the inner diameter difference between the two liquid distribution branch pipes, within the range allowed by the diameter of the heat exchange pipes of the heat exchanger, the refrigerant flow rate ratio of the two liquid distribution branch pipes can be 2:1 - 7:1, or even a larger ratio of refrigerant distribution requirements can be achieved. The inner diameter of the second liquid distribution branch pipe 2212 does not need to be designed too thin, and the refrigerant flow rate in the first liquid distribution branch pipe 2211 can be much larger than that in the second liquid distribution branch pipe 2212. Therefore, the refrigerant distribution solution of the liquid distributor provided by the embodiments of the present disclosure avoids the problem of excessive total pressure drop of the liquid distribution branch pipes of the liquid distributor and the heat exchanger when the refrigerant distribution ratio between the two liquid distribution branch pipes is relatively large.

[0058] Optionally, the included angle between the first plane where the axes of the first pipe section 2217 and the second pipe section 2218 of the confluence pipe 2213 are located and the second plane where the axes of the two liquid distribution branch pipes are located is greater than or equal to 50 degrees and less than or equal to 70 degrees. This increases the difference in the refrigerant flow rates in the first liquid distribution branch pipe 2211 and the second liquid distribution branch pipe 2212.

[0059] Optionally, the second pipe section 2218 of the confluence pipe 2213 is inclined towards the second liquid distribution branch pipe 2212.

[0060] Combined with Figure 6 and Figure 7 As shown, the embodiments of the present disclosure provide an air conditioner. The air conditioner includes: a first refrigerant circulation loop and a second refrigerant circulation loop.

[0061] The compressor 1 is connected to the fourth liquid distributor 224 of the throttling heat exchanger 200 through the first pipeline 4. The first liquid distributor 221 is connected to the indoor heat exchanger 3 through the second pipeline 5. The indoor heat exchanger 3 is connected to the compressor 1 through the third pipeline 6. In this way, the compressor 1, the first pipeline 4, the throttling heat exchanger 200, the second pipeline 5, the indoor heat exchanger 3, and the third pipeline 6 form a first refrigerant circulation loop.

[0062] The first end of the fourth pipeline 7 is communicated with the first position on the first pipeline 4, and the second end is communicated with the second position on the second pipeline 5. The first end of the fifth pipeline 8 is communicated with the third position on the first pipeline 4, and the second end is communicated with the fourth position on the second pipeline 5. In this way, the compressor 1, the fourth pipeline 7, the throttle heat exchanger 200, the fifth pipeline 8, the indoor heat exchanger 3 and the third pipeline 6 form a second refrigerant circulation circuit.

[0063] A first on-off valve 9 is provided on the first pipeline 4, and the first on-off valve 9 is located between the first position and the third position. A second on-off valve 10 is provided on the second pipeline 5, and the second on-off valve 10 is located between the second position and the fourth position. A third on-off valve 11 is provided on the fourth pipeline 7. A fourth on-off valve 12 is provided on the fifth pipeline 8. By switching the on-off states of the first refrigerant circulation circuit and the second refrigerant circulation circuit, it is possible to switch each heat exchange branch between the parallel connection state and the series connection state.

[0064] Combined with Figure 6 As shown, control the first on-off valve 9 and the second on-off valve 10 to open, and the solenoid valve 241 and the electronic expansion valve 231 to close to connect the first refrigerant circulation circuit. At the same time, close the third on-off valve 11 and the fourth on-off valve 12 to disconnect the second refrigerant circulation circuit. In this way, it is possible to achieve a series connection state for each heat exchange branch.

[0065] Combined with Figure 7 As shown, control the first on-off valve 9 and the second on-off valve 10 to close to disconnect the first refrigerant circulation circuit. At the same time, control the third on-off valve 11 and the fourth on-off valve 12 to open, and the solenoid valve 241 and the electronic expansion valve 231 to conduct to connect the second refrigerant circulation circuit. In this way, it is possible to achieve a parallel connection state for each heat exchange branch.

[0066] The above air conditioner can be either a single-cool air conditioner or a heating and cooling air conditioner. When it is a heating and cooling air conditioner, the air conditioner further includes a four-way valve.

[0067] Combined with Figure 8 As shown, an embodiment of the present disclosure provides a method for controlling air conditioner energy saving, including:

[0068] S801, when the processor operates the air conditioner in the cooling mode, in response to the instruction to turn on energy saving, determine the target operating power according to the ambient temperature.

[0069] S802, the processor determines the target state of each heat exchange branch according to the target operating power.

[0070] S803, the processor controls the on-off states of the first refrigerant circulation circuit and the second refrigerant circulation circuit according to the target state.

[0071] The user can send an instruction to turn on energy saving to the air conditioner through a remote controller or a terminal device. When the air conditioner operates in the cooling mode, if it receives the instruction to turn on energy saving, it determines the target operating power according to the ambient temperature. Energy saving means attenuating the cooling capacity. Therefore, the target operating power is less than the set power under the current working conditions.

[0072] Optionally, the indoor unit of the air conditioner is equipped with a temperature sensor, or the processor of the air conditioner is communicatively connected to a temperature sensor installed indoors to obtain the temperature of the indoor environment. The higher the ambient temperature, the greater the required cooling capacity, and more energy is needed to ensure the high-power operation of the air conditioner. Therefore, the target operating power is greater, and the degree of energy saving is relatively smaller.

[0073] According to the target operating power, determine the target states of each heat exchange branch. The target states include: parallel connection state and series connection state. When the refrigerant flows through a single flow path, there will be more friction between the refrigerant and the pipeline, resulting in a greater pressure loss, and thus greater energy waste. When the refrigerant flows through multiple flow paths, on the one hand, the heat exchange is faster, and on the other hand, the friction between the refrigerant and the pipeline will be relatively reduced, and the pressure loss is also smaller. In this way, the energy loss is relatively less. According to the target states, control the on-off states of the first refrigerant circulation loop and the second refrigerant circulation loop, so that the connection states of each heat exchange branch match the target states.

[0074] In the embodiment of the present disclosure, after responding to the instruction to turn on energy saving, the target operating power is determined based on the ambient temperature. In this way, when the air conditioner operates at the target power, on the one hand, a certain energy-saving effect can be achieved, and on the other hand, it can ensure that the operating power of the air conditioner matches the ambient temperature, thereby ensuring the cooling effect. Based on the target operating power, determine that the target states of each heat exchange branch are the parallel connection state or the series connection state. Then control the on-off states of the first refrigerant circulation loop and the second refrigerant circulation loop so that the states of each heat exchange branch are in the target states. In this way, the flow mode of the refrigerant, that is, single-path flow or multi-path flow, is matched with the target operating power, so as to achieve the energy-saving effect. Compared with the method of achieving energy saving by restricting current, adjusting the flow mode of the refrigerant is not affected by voltage. Therefore, the energy-saving effect can be ensured to be stable in a better state.

[0075] Optionally, in step S801, the processor determines the target operating power according to the ambient temperature, including:

[0076] The processor determines the target operating power corresponding to the current ambient temperature according to the correlation between the ambient temperature and the operating power.

[0077] The processor pre-stores the correlation between the ambient temperature and the operating power. Here, the ambient temperature refers to the outdoor ambient temperature. The correlation includes one or more correspondences between the temperature and the operating power. The operating power is expressed as a percentage of the set power P under this operating condition. When the temperature is in the first temperature range, the operating power is the first power. When the temperature is in the second temperature range, the operating power is the second power. When the temperature is in the third temperature range, the operating power is the third power. When the temperature is in the fourth temperature range, the operating power is the fourth power. When the temperature is in the fifth temperature range, the operating power is the fifth power. Among them, the first temperature range, the second temperature range, the third temperature range, the fourth temperature range, and the fifth temperature range decrease in sequence. The first power, the second power, the third power, the fourth power, and the fifth power decrease in sequence. Based on the correspondence between the temperature range where the temperature is located and the operating power, the target operating power corresponding to the current ambient temperature is determined. Specifically, see Table 1 for the correlation between the ambient temperature and the operating power.

[0078] Table 1 Correlation between ambient temperature and operating power

[0079] Ambient temperature T (°C) Operating power T>48℃ 100％P 43℃<T≤48℃ 90％P 35℃<T≤43℃ 80％P 27℃<T≤35℃ 50％P T≤25℃ 0 (shutdown for internal circulation)

[0080] For example, if the ambient temperature is 40°C, the target operating power is determined to be 80%P.

[0081] In this way, the temperature is divided to form multiple temperature ranges. Each temperature range corresponds to a different operating power, so that the target operating power is adapted to the ambient temperature. On the one hand, a certain degree of energy saving can be achieved, and on the other hand, sufficient energy can be ensured to guarantee the refrigeration effect.

[0082] It should be noted that the correspondence in Table 1 can be adjusted according to actual needs.

[0083] Optionally, as shown in combination Figure 9 The embodiments of the present disclosure provide another method for controlling air conditioner energy saving, including:

[0084] S801. When the processor is in the cooling mode of the air conditioner and in response to the instruction to turn on energy saving, determine the target operating power according to the ambient temperature.

[0085] S812. When the target operating power is greater than the power threshold, determine the target state of each heat exchange branch as the parallel connection state.

[0086] S822. When the target operating power is less than or equal to the power threshold, determine the target state of each heat exchange branch as the series connection state.

[0087] S803. The processor controls the on / off states of the first refrigerant circulation loop and the second refrigerant circulation loop according to the target state.

[0088] Set a power threshold P' to define the target operating power P m of the size. If the target operating power P m is greater than the power threshold P', it indicates that more energy is currently required to ensure the refrigeration effect, and the energy-saving effect achieved by reducing the operating power is relatively small. Therefore, determine the target state of each heat exchange branch as the parallel-connected state. In this way, control the refrigerant to flow into multiple heat exchange branches to reduce the pressure loss and achieve the purpose of improving the energy-saving effect. If the target power P m is less than or equal to the power threshold P', it indicates that the current refrigeration demand is relatively low, and the energy-saving effect can be ensured by reducing more operating power. At the same time, when the air conditioner operates in the refrigeration mode, if each heat exchange branch is in the series-connected state, it can extend the flow path length of the high-temperature refrigerant in the heat exchanger, enabling the refrigerant to fully exchange heat to achieve "subcooling". Therefore, determine the target state of each heat exchange branch as the series-connected state. Optionally, the power threshold is 80%P. In this way, based on the size of the target operating power, determine the target state of each heat exchange branch. When the energy-saving achieved by reducing the operating power is limited, prioritize energy conservation. At the same time, determine the target state as the parallel-connected state, and by allowing the refrigerant to flow through multiple heat exchange branches, reduce the pressure loss, thereby further achieving energy conservation. When the energy-saving effect can be ensured by reducing the operating power, prioritize ensuring the refrigerant heat exchange effect, and determine the target state as the series-connected state. In this way, balance the energy-saving effect and the refrigerant heat exchange effect to make the air conditioner operate in a better state.

[0089] As can be seen from the foregoing, when the air conditioner operates in the heating mode, each heat exchange branch is in the parallel-connected state, which can avoid the pressure loss problem caused by too long a flow path in the heating flow direction and improve the heating efficiency. Therefore, even when the air conditioner operates in the heating mode and does not receive the energy-saving activation instruction, each heat exchange branch is also in the parallel-connected state. Then when the air conditioner receives the energy-saving activation instruction, there is no need to control each heat exchange branch to switch to the parallel-connected state. Therefore, the embodiments of the present disclosure only describe the switching control of the connection state of each heat exchange branch when the air conditioner operates in the refrigeration mode and receives the energy-saving activation instruction. Among them, the refrigeration mode can be the mode operated by a single-cool air conditioner or a heat pump air conditioner.

[0090] Combined with Figure 10 as shown, the embodiments of the present disclosure provide another method for controlling air conditioner energy conservation, including:

[0091] S801. When the air conditioner operates in the refrigeration mode, in response to the energy-saving activation instruction, the processor determines the target operating power according to the ambient temperature.

[0092] S802, the processor determines the target states of each heat exchange branch according to the target operating power.

[0093] S813, when the current state is consistent with the target state, the processor controls the first refrigerant circulation loop and the second refrigerant circulation loop to maintain their current on-off states.

[0094] S823, when the current state is inconsistent with the target state and the target state is the parallel connection state, the processor controls the first refrigerant circulation loop to be disconnected and controls the second refrigerant circulation loop to be connected.

[0095] S833, when the current state is inconsistent with the target state and the target state is the series connection state, the processor controls the first refrigerant circulation loop to be connected and controls the second refrigerant circulation loop to be disconnected.

[0096] Compare the current state and the target state of each heat exchange branch. If the states are consistent, control the first refrigerant circulation loop and the second refrigerant circulation loop to maintain their current on-off states. If the states are inconsistent, further switch the on-off states of the first refrigerant circulation loop and the second refrigerant circulation loop based on the target state. Specifically, if the target state is the series connection state, control the first on-off valve and the second on-off valve to open, and the solenoid valve and the electronic expansion valve to close to control the first refrigerant circulation loop to be connected. At the same time, control the third on-off valve and the fourth on-off valve to close to control the second refrigerant circulation loop to be disconnected. In this way, each heat exchange branch can be in a series connection state. If the target state is the parallel connection state, control the first on-off valve and the second on-off valve to close to control the first refrigerant circulation loop to be disconnected. At the same time, control the third on-off valve, the fourth on-off valve, the solenoid valve and the electronic expansion valve to conduct to control the second refrigerant circulation loop to be connected. In this way, each heat exchange branch can be in a parallel connection state. In this way, based on the change in the target operating power caused by the change in the ambient temperature, the target connection state of each heat exchange branch is matched in real time to ensure the energy-saving effect of the air conditioner.

[0097] Optionally, after the air conditioner responds to the instruction to turn on energy saving, the processor controls the indoor fan and the outdoor fan to run at the maximum speed. This is because the operation of the indoor and outdoor fans has little impact on the energy-saving effect, so there is no need to reduce the speed. Controlling the indoor fan and the outdoor fan to run at the maximum speed can accelerate heat exchange, thus ensuring the refrigeration effect.

[0098] Optionally, as shown in Figure 11 the present disclosure provides a method for controlling air conditioner energy saving, including:

[0099] S801, when the air conditioner is operating in the cooling mode, in response to the instruction to turn on energy saving, the processor determines the target operating power according to the ambient temperature.

[0100] S802. The processor determines the target states of each heat exchange branch according to the target operating power.

[0101] S803. The processor controls the on-off states of the first refrigerant circulation loop and the second refrigerant circulation loop according to the target states.

[0102] S804. The processor controls the compressor to operate at a reduced frequency until the air conditioner reaches the target operating power.

[0103] After determining the target operating power, control the operating frequency of the compressor to gradually decrease, so that the current operating power drops to the target operating power. Until the air conditioner reaches the target operating power, control the operating frequency of the compressor to stop decreasing. At this time, the energy-saving control of the air conditioner is completed.

[0104] Optionally, when controlling the compressor to operate at a reduced frequency, determine the frequency reduction rate of the compressor according to the target operating power. When the target operating power P m is greater than the power threshold P', determine the frequency reduction rate to be the first rate V1. When the target operating power P m is less than or equal to the power threshold P', determine the frequency reduction rate to be the second rate V2. Wherein, the second rate V2 is greater than the first rate V1. Optionally, V1 is 2Hz / s and V2 is 3Hz / s. This is because the higher the ambient temperature, the more cooling capacity is required. At this time, it is necessary to ensure a certain amount of refrigeration capacity and then operate at a reduced frequency. Otherwise, even the basic user comfort cannot be guaranteed, and energy saving becomes meaningless. Therefore, when the target operating power is relatively large (corresponding to a relatively high ambient temperature), control the compressor to reduce the frequency at a relatively small rate to ensure the refrigeration effect.

[0105] In practical applications, as shown in Figure 12 below:

[0106] S1201. The air conditioner operates in the cooling mode and receives an instruction to turn on energy saving.

[0107] S1202. The processor determines the target operating power P according to the ambient temperature m .

[0108] S1203. The processor determines whether P m > P' is satisfied; if yes, execute S1204; if no, execute S1208.

[0109] S1204. The processor determines that the target state of each heat exchange branch is in a series-connected state.

[0110] S1205. The processor determines whether the current state of each heat exchange branch is in a series-connected state; if yes, execute S1210; if no, execute S1206.

[0111] S1206, the processor controls the third on-off valve and the fourth on-off valve to close, the first on-off valve and the second on-off valve to open, and the solenoid valve and the electronic expansion valve to close.

[0112] S1207, the processor controls the compressor to operate at a reduced frequency at a rate of V1.

[0113] S1208, the processor determines that the target state of each heat exchange branch is the parallel connection state.

[0114] S1209, the processor determines whether the current state of each heat exchange branch is the parallel connection state; if so, execute S1210; if not, execute S1211.

[0115] S1210, the processor controls the first on-off valve, the second on-off valve, the third on-off valve, the fourth on-off valve, and the solenoid valve to maintain their current states unchanged.

[0116] S1211, the processor controls the first on-off valve and the second on-off valve to close, the third on-off valve and the fourth on-off valve to open, and the solenoid valve and the electronic expansion valve to conduct.

[0117] S1212, the processor controls the compressor to operate at a reduced frequency at a rate of V2.

[0118] S1213, the processor determines whether the power of the air conditioner has dropped to P m ; if so, execute S1214; if not, execute S1207 or S12012.

[0119] S1214, the energy-saving control ends.

[0120] Combined with Figure 13 As shown, the embodiments of the present disclosure provide a device for controlling air conditioner energy saving, including: a first determination module 131, a second determination module 132, and a control module 133. The first determination module 131 is configured to, in the case where the air conditioner operates in the cooling mode, in response to an instruction to turn on energy saving, determine a target operating power according to the ambient temperature. The second determination module 132 is configured to determine the target state of each heat exchange branch according to the target operating power. The control module 133 is configured to control the on-off states of the first refrigerant circulation loop and the second refrigerant circulation loop according to the target state.

[0121] By using the device for controlling air conditioner energy saving provided by the embodiments of the present disclosure, after responding to the instruction to turn on energy saving, the target operating power is determined based on the ambient temperature. In this way, when the air conditioner operates at the target power, on the one hand, a certain energy saving effect can be achieved, and on the other hand, it can ensure that the operating power of the air conditioner matches the ambient temperature, thus ensuring the cooling effect. Based on the target operating power, the target states of each heat exchange branch are determined to be in a parallel connection state or a series connection state. Then, the on-off states of the first refrigerant circulation loop and the second refrigerant circulation loop are controlled so that the states of each heat exchange branch are in the target states. In this way, the flow mode of the refrigerant, that is, single-path flow or multi-path flow, is matched with the target operating power, thereby achieving the energy saving effect. Compared with the method of achieving energy saving by restricting current, adjusting the flow mode of the refrigerant is not affected by voltage. Therefore, the energy saving effect can be ensured to be stable in a better state.

[0122] Combined with Figure 14 As shown, the embodiments of the present disclosure provide a device for controlling air conditioner energy saving, including a processor 140 and a memory 141. Optionally, the device may further include a communication interface 142 and a bus 143. Among them, the processor 140, the communication interface 142, and the memory 141 can complete mutual communication through the bus 143. The communication interface 142 can be used for information transmission. The processor 140 can call the logical instructions in the memory 141 to execute the method for controlling air conditioner energy saving in the above embodiments.

[0123] In addition, when the logical instructions in the above-mentioned memory 141 are implemented in the form of software function units and sold or used as an independent product, they can be stored in a computer-readable storage medium.

[0124] The memory 141, as a computer-readable storage medium, can be used to store software programs and computer-executable programs, such as the program instructions / modules corresponding to the methods in the embodiments of the present disclosure. The processor 140 executes functional applications and data processing by running the program instructions / modules stored in the memory 141, that is, implements the method for controlling air conditioner energy saving in the above embodiments.

[0125] The memory 141 may include a program storage area and a data storage area. Among them, the program storage area can store an operating system and application programs required for at least one function; the data storage area can store data created according to the use of the terminal device, etc. In addition, the memory 141 may include a high-speed random access memory and may also include a non-volatile memory.

[0126] The embodiments of the present disclosure provide an air conditioner including the above-mentioned device for controlling air conditioner energy saving.

[0127] An embodiment of the present disclosure provides a storage medium storing computer-executable instructions, and the computer-executable instructions are configured to execute the method for controlling air conditioner energy saving described above.

[0128] The above storage medium may be a transient computer-readable storage medium or a non-transient computer-readable storage medium.

[0129] The above description and the drawings fully illustrate the embodiments of the present disclosure so that those skilled in the art can practice them. Other embodiments may include structural, logical, electrical, process, and other changes. Embodiments only represent possible variations. Unless explicitly required, separate components and functions are optional, and the order of operations may vary. Parts and features of some embodiments may be included in or substituted for parts and features of other embodiments. Moreover, the terms used in this application are only for describing the embodiments and are not used to limit the claims. As used in the description of the embodiments and the claims, unless the context clearly indicates otherwise, the singular forms "a", "an", and "the" are intended to include the plural forms as well. Similarly, as used in this application, the term "and / or" refers to any and all possible combinations including one or more of the associated listed items. Additionally, when used in this application, the term "comprise" and its variants "comprises" and / or "comprising" etc. mean the presence of the stated features, wholes, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components, and / or groups of these. Without further limitation, an element defined by the statement "comprising one..." does not exclude the presence of additional identical elements in the process, method, or device comprising the element. In this document, what each embodiment focuses on may be the differences from other embodiments, and the same or similar parts among the embodiments may be referred to each other. For the methods, products, etc. disclosed in the embodiments, if they correspond to the method parts disclosed in the embodiments, the relevant parts may refer to the description of the method parts.

[0130] Those skilled in the art will realize that the units and algorithm steps of the examples described in connection with the embodiments disclosed herein can be implemented by electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are executed in hardware or software can depend on the specific application and design constraints of the technical solution. The skilled person can use different methods for each specific application to implement the described functions, but such implementation should not be considered to exceed the scope of the embodiments of the present disclosure. The skilled person can clearly understand that for the convenience and conciseness of description, the specific working processes of the systems, devices, and units described above can refer to the corresponding processes in the foregoing method embodiments and will not be elaborated herein.

[0131] In the embodiments disclosed herein, the disclosed methods, products (including but not limited to devices, equipment, etc.) can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the division of the units can be merely a logical function division, and there can be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Additionally, the couplings, direct couplings, or communication connections shown or discussed with each other can be through some interfaces, and the indirect couplings or communication connections of the devices or units can be in electrical, mechanical, or other forms. The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they can be located in one place or distributed to multiple network units. Some or all of the units can be selected according to actual needs to implement this embodiment. Additionally, in the embodiments of the present disclosure, the functional units can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit.

[0132] 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 the present disclosure. In this regard, each block in the flowchart or block diagram may represent a module, a segment of code, or a portion thereof that contains one or more executable instructions for implementing a specified logical function. In some alternative implementations, the functions noted in the blocks may occur in a different order than noted in the accompanying drawings. For example, two consecutive blocks may in fact be executed substantially in parallel, or they may sometimes be executed in the 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 in fact be executed substantially in parallel, or they may sometimes be executed in the reverse order, depending on the functions involved. Each block in the block diagrams and / or flowcharts, and combinations of blocks in the block diagrams and / or flowcharts, can be implemented by a dedicated hardware-based system that performs the specified functions or actions, or can be implemented by a combination of dedicated hardware and computer instructions.

Claims

1. A method for controlling air conditioner energy saving, the air conditioner comprising: Throttling heat exchanger; The throttling heat exchanger includes: multiple heat exchange branches; and the air conditioner further includes: a first refrigerant circulation loop and a second refrigerant circulation loop sharing the throttling heat exchanger; by switching the on-off states of the first refrigerant circulation loop and the second refrigerant circulation loop, each heat exchange branch can be switched between a parallel connection state and a series connection state; the method includes: When the air conditioner operates in the cooling mode, in response to an instruction to turn on energy saving, determine the target operating power according to the ambient temperature; Determine the target state of each heat exchange branch according to the target operating power; wherein, determining the target state of each heat exchange branch according to the target operating power includes: when the target operating power is greater than the power threshold, determine the target state of each heat exchange branch as the parallel connection state, control the refrigerant to flow through multiple heat exchange branches, reduce the pressure loss, and achieve the purpose of improving the energy saving effect; when the target operating power is less than or equal to the power threshold, determine the target state of each heat exchange branch as the series connection state, ensure the energy saving effect by reducing more operating power, and can extend the flow path length of the high-temperature refrigerant in the heat exchanger, so that the refrigerant can be fully heat exchanged to achieve subcooling; Control the on-off states of the first refrigerant circulation loop and the second refrigerant circulation loop according to the target state.

2. The method according to claim 1, characterized in that, The determining the target operating power according to the ambient temperature includes: Determine the target operating power corresponding to the current ambient temperature according to the correlation between the ambient temperature and the operating power.

3. The method according to claim 1, wherein, The power threshold is 80%P, where P is the set power under the current working condition.

4. The method according to claim 1, wherein When the first refrigerant circulation loop is disconnected and the second refrigerant circulation loop is connected, each heat exchange branch is in a parallel connection state; when the first refrigerant circulation loop is connected and the second refrigerant circulation loop is disconnected, each heat exchange branch is in a series connection state; the controlling the on-off states of the first refrigerant circulation loop and the second refrigerant circulation loop according to the target state includes: When the current state is the same as the target state, control the first refrigerant circulation loop and the second refrigerant circulation loop to maintain the current on-off state; When the current state is different from the target state and the target state is the parallel connection state, control the first refrigerant circulation loop to be disconnected and control the second refrigerant circulation loop to be connected; When the current state is different from the target state and the target state is the series connection state, control the first refrigerant circulation loop to be connected and control the second refrigerant circulation loop to be disconnected.

5. The method according to any one of claims 1 to 4, characterized in that, After the response to the instruction to turn on energy saving, the method further includes: Control the indoor fan and the outdoor fan to operate at the maximum speed.

6. The method according to any one of claims 1 to 4, characterized in that, After the determining the target operating power according to the ambient temperature, the method further includes: Control the compressor to operate at a reduced frequency until the air conditioner reaches the target operating power.

7. The method according to claim 6, characterized in that, The controlling the compressor to operate at a reduced frequency includes: Determine the frequency reduction rate of the compressor according to the target operating power.

8. A device for controlling air conditioner energy saving, comprising a processor and a memory storing program instructions, characterized in that, The processor is configured to execute the method for controlling air conditioner energy saving according to any one of claims 1 to 7 when running the program instructions.

9. An air conditioner, comprising: Throttle heat exchanger; The throttle heat exchanger includes: a plurality of heat exchange branches; characterized in that the air conditioner further includes: A first refrigerant circulation circuit and a second refrigerant circulation circuit sharing the throttle heat exchanger; by switching the on-off states of the first refrigerant circulation circuit and the second refrigerant circulation circuit, each heat exchange branch can be switched between a parallel connection state and a series connection state; and, The device for controlling air conditioner energy saving according to claim 8.

10. A storage medium stores program instructions, characterized in that, When the program instructions are running, they execute the method for controlling air conditioner energy saving according to any one of claims 1 to 7.

Images