Air conditioner starting method, controller, air conditioner, storage medium and program product

Abstract

The invention provides an air conditioner starting method, a controller, an air conditioner, a storage medium and a program product. The air conditioner starting method comprises the steps that in response to a starting instruction of an air conditioner, at least one of whether a four-way valve of the air conditioner needs to be reversed or not, the starting load of the air conditioner and outdoor environment temperature information is obtained; and controlling a double-cylinder variable-capacity compressor of the air conditioner to perform single-cylinder or double-cylinder starting according to at least one of the acquired information of whether the four-way valve of the air conditioner needs to be reversed or not, the starting load of the air conditioner and the outdoor environment temperature information. In this way, the starting mode of the double-cylinder variable-capacity compressor can be better matched with the actual requirement, and therefore the performance of the air conditioner is improved.

Description

Technical Field

[0001] The present application relates to the technical field of air conditioning, and in particular to an air conditioning startup method, a controller, an air conditioner, a storage medium, and a program product. Background Art

[0002] Some air conditioners have a two-cylinder variable capacity compressor. The corresponding two-cylinder variable capacity compressor adopts a large and small cylinder design, and the large cylinder can be unloaded to achieve a single-cylinder mode in which only a single cylinder works and a two-cylinder mode in which both cylinders work.

[0003] At present, air conditioners with dual-cylinder variable-capacity compressors have a single starting method when starting. Either they start with a single cylinder regardless of the situation, or they start with both cylinders regardless of the situation. This makes it difficult to effectively meet actual needs and affects the performance of the air conditioner.

[0004] The above statements are only used to provide background technical information related to the present application and do not necessarily constitute prior art. Summary of the Invention

[0005] The present application aims to provide an air conditioner startup method, a controller, an air conditioner, a computer storage medium, and a computer program product to improve the performance of the air conditioner.

[0006] To achieve the above-mentioned purpose, the air conditioner startup method provided in this application includes:

[0007] In response to a start-up instruction of the air conditioner, obtaining at least one of whether a four-way valve of the air conditioner needs to be reversed, a startup load of the air conditioner, and outdoor ambient temperature information;

[0008] The dual-cylinder variable displacement compressor of the air conditioner is controlled to start a single cylinder or two cylinders according to at least one of the acquired information of whether the four-way valve of the air conditioner needs to be reversed, the startup load of the air conditioner and the outdoor ambient temperature.

[0009] In some embodiments, controlling a two-cylinder variable displacement compressor of an air conditioner to start a single cylinder or two cylinders based on at least one of the acquired information of whether a four-way valve of the air conditioner needs to be reversed, a startup load of the air conditioner, and an outdoor ambient temperature includes:

[0010] When the target operating mode of the air conditioner is heating mode, controlling the two-cylinder variable displacement compressor to start a single cylinder or two cylinders according to at least one of whether the four-way valve needs to be reversed, the startup load of the air conditioner, and the outdoor ambient temperature information; and / or

[0011] When the target operating mode of the air conditioner is the cooling mode, the dual-cylinder variable displacement compressor is controlled to start a single cylinder or two cylinders according to the startup load of the air conditioner.

[0012] In some embodiments, when the target operating mode of the air conditioner is the heating mode, controlling the two-cylinder variable displacement compressor to perform single-cylinder startup or two-cylinder startup based on at least one of whether the four-way valve needs to be reversed, the startup load of the air conditioner, and outdoor ambient temperature information includes:

[0013] When the target operating mode of the air conditioner is the heating mode and the four-way valve needs to be reversed, controlling the two-cylinder variable capacity compressor to start the two cylinders; and / or,

[0014] When the target operating mode of the air conditioner is heating mode and the four-way valve does not need to be reversed, the two-cylinder variable capacity compressor is controlled to start a single cylinder or two cylinders according to the ambient temperature.

[0015] In some embodiments, the ambient temperature comprises an outdoor ambient temperature.

[0016] In some embodiments, controlling the dual-cylinder variable displacement compressor to start a single cylinder or two cylinders according to the ambient temperature includes:

[0017] According to the relationship between the ambient temperature and the temperature threshold, the dual-cylinder variable capacity compressor is controlled to start a single cylinder or two cylinders.

[0018] In some embodiments, the temperature threshold is greater than or equal to 7°C and less than or equal to 15°C.

[0019] In some embodiments, controlling the dual-cylinder variable capacity compressor to start a single cylinder or two cylinders according to the relationship between the ambient temperature and the temperature threshold includes:

[0020] When the ambient temperature is lower than the temperature threshold, controlling the dual-cylinder variable capacity compressor to start the dual-cylinder compressor; and / or,

[0021] When the ambient temperature is greater than or equal to the temperature threshold, the dual-cylinder variable capacity compressor is controlled to start a single cylinder or two cylinders according to the startup load of the air conditioner.

[0022] In some embodiments, when the target operating mode of the air conditioner is the heating mode, controlling the two-cylinder variable displacement compressor to start a single cylinder or two cylinders according to at least one of whether the four-way valve needs to be reversed, the startup load of the air conditioner, and outdoor ambient temperature information includes:

[0023] When the target operating mode of the air conditioner is the heating mode and the outdoor ambient temperature is less than the temperature threshold, controlling the dual-cylinder variable capacity compressor to start the dual cylinders; and / or,

[0024] When the target operating mode of the air conditioner is heating mode and the outdoor ambient temperature is greater than or equal to the temperature threshold, the two-cylinder variable capacity compressor is controlled to start a single cylinder or two cylinders according to whether the four-way valve needs to be reversed.

[0025] In some embodiments, when the target operating mode of the air conditioner is the heating mode and the outdoor ambient temperature is greater than or equal to a temperature threshold, controlling the two-cylinder variable displacement compressor to start a single cylinder or two cylinders according to whether the four-way valve needs to be reversed includes:

[0026] When the target operating mode of the air conditioner is heating mode, the outdoor ambient temperature is greater than or equal to the temperature threshold, and the four-way valve needs to be reversed, controlling the two-cylinder variable displacement compressor to start the two cylinders; and / or,

[0027] When the target operating mode of the air conditioner is heating mode, the outdoor ambient temperature is greater than or equal to the temperature threshold, and the four-way valve does not need to be reversed, the two-cylinder variable capacity compressor is controlled to start a single cylinder or two cylinders according to the startup load of the air conditioner.

[0028] In some embodiments, controlling a dual-cylinder variable capacity compressor to start a single cylinder or two cylinders according to the startup load of the air conditioner includes:

[0029] According to the relationship between the startup load of the air conditioner and the load threshold, the dual-cylinder variable capacity compressor is controlled to start a single cylinder or two cylinders.

[0030] In some embodiments, controlling a dual-cylinder variable capacity compressor to start a single cylinder or two cylinders according to a relationship between a startup load of the air conditioner and a load threshold includes:

[0031] When the startup load is less than the load threshold, controlling the dual-cylinder variable capacity compressor to start a single cylinder; and / or,

[0032] When the startup load is greater than or equal to the load threshold, the dual-cylinder variable capacity compressor is controlled to perform dual-cylinder startup.

[0033] In some embodiments, the load threshold is greater than or equal to 25% and less than or equal to 35%.

[0034] In some embodiments, the startup load is determined based on at least one of the number of indoor units that need to be started in the air conditioner, the outdoor ambient temperature, the indoor ambient temperature, and the target wind speed of the air conditioner.

[0035] In addition, the controller provided in the present application includes a memory and a processor coupled to the memory, and the processor is configured to execute the air conditioning startup method of any embodiment based on instructions stored in the memory.

[0036] In addition, the air conditioner provided in the present application includes the controller of any embodiment.

[0037] In addition, the computer-readable storage medium provided in the present application stores computer instructions, and the computer instructions are executed by a processor to implement the air conditioner startup method of any embodiment.

[0038] In addition, the computer program product provided in the present application includes a computer program, and when the computer program is executed by a processor, it implements the air conditioning startup method of any embodiment.

[0039] When starting an air conditioner with a two-cylinder variable-capacity compressor, single-cylinder startup or double-cylinder startup is no longer a one-size-fits-all approach. Instead, two options are provided: single-cylinder startup and double-cylinder startup. Whether the two-cylinder variable-capacity compressor is to be started with a single cylinder or a double cylinder is determined based on whether the four-way valve needs to be reversed, the startup load, and at least one of the outdoor ambient temperature information. This allows the startup mode of the two-cylinder variable-capacity compressor to be more closely aligned with actual needs, which is beneficial to improving the performance of the air conditioner.

[0040] Other features and advantages of the present application will become apparent from the following detailed description of exemplary embodiments of the present application with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0042] Figure 1 This is a schematic diagram of the principles of air conditioning in some embodiments of the present application.

[0043] Figure 2 This is a flow chart of the air conditioner startup method in some embodiments of the present application.

[0044] Figure 3 This is a flow chart of the air conditioner startup method in other embodiments of the present application.

[0045] Figure 4 Schematic diagram of the flow of the air conditioner startup method in some other embodiments of the present application.

[0046] Description of reference numerals:

[0047] 100. Air conditioning;

[0048] 10. Outdoor unit; 20. Indoor unit;

[0049] 1. Two-cylinder variable capacity compressor; 2. Oil separator; 3. Four-way valve; 4. First heat exchanger; 5. Gas-liquid separator; 6. Low-pressure solenoid valve; 7. High-pressure solenoid valve; 8. Variable capacity port; 9. Refrigerant circulation loop. DETAILED DESCRIPTION

[0050] The following will be combined with the accompanying drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. The described embodiments are only some embodiments of the present application, rather than all embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is in no way intended to limit the present application, its application, or use.

[0051] In the description of this application, the use of words such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above words have no special meaning and therefore cannot be understood as limiting the scope of protection of this application.

[0052] In the description of this application, it should be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "horizontal, vertical, vertical, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of this application; the directional words "inside and outside" refer to the inside and outside relative to the outline of each component itself.

[0053] In addition, the technical features involved in different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0054] Air conditioners, especially multi-split units, are usually designed and selected based on the maximum heat load of the entire house. However, in actual use, most of the time only a few rooms require air conditioning. Therefore, air conditioners are often operated at extremely low loads. Under low loads, the two-cylinder variable-capacity compressor operates at a low frequency. Due to the decrease in motor efficiency and volumetric efficiency, the two-cylinder variable-capacity compressor operates in a low-efficiency state for a long time, which will lead to a significant loss of energy efficiency due to excessive deviation from the optimal efficiency point.

[0055] In order to solve the above problems, air conditioners with dual-cylinder variable capacity compressors came into being.

[0056] A twin-cylinder variable displacement compressor is a type of variable displacement compressor with two cylinders. One of the two cylinders can be unloaded when high-pressure gas is introduced into the variable displacement port. This allows the twin-cylinder variable displacement compressor to adjust the capacity to meet different operating requirements by changing the working state of the cylinders, allowing both cylinders to operate, or only one cylinder to operate. The displacement of the two cylinders can be the same or different. When the displacement (volume) of the two cylinders is different, the one with the smaller displacement is usually called the small cylinder, and the one with the larger displacement is usually called the large cylinder.

[0057] Among them, when both cylinders are working, the two-cylinder variable capacity compressor is in the two-cylinder operation mode. In this case, the two cylinders of the two-cylinder variable capacity compressor are opened and operated at the same time, with a large capacity and sufficient horsepower, which can provide sufficient cooling or heating capacity to meet high load requirements and achieve rapid cooling or heating effects.

[0058] When only a single cylinder is working, the two-cylinder variable capacity compressor is in single-cylinder operation mode. In this case, only the small cylinder is running and the large cylinder is closed. The capacity is small and the horsepower is low, which can minimize the low-load operating power and greatly improve the energy efficiency. While reducing the working volume of the two-cylinder variable capacity compressor, the operating frequency of the two-cylinder variable capacity compressor is increased, so that the two-cylinder variable capacity compressor works at the highest efficiency operating frequency, achieving the effect of reducing output and improving low-load energy efficiency.

[0059] It can be seen that the two-cylinder variable capacity compressor is more flexible and can achieve variable capacity adjustment by switching between single and double cylinders, quickly adapt to different load requirements, improve equipment utilization, and especially maintain high efficiency at lower loads, reduce energy consumption, and improve energy efficiency.

[0060] Although the twin-cylinder variable capacity compressor has the advantages of strong flexibility and high energy efficiency, it has been found in practice that the performance of air conditioners with twin-cylinder variable capacity compressors still needs to be further improved.

[0061] Further research has found that an important reason why the performance of air conditioners with dual-cylinder variable-capacity compressors still needs to be improved is that, at present, air conditioners with dual-cylinder variable-capacity compressors do not distinguish the actual situation when starting, but directly start according to one of the modes, that is, no matter what the actual situation is at the time of startup, they are directly started in single-cylinder mode, or directly started in dual-cylinder mode, and then switched between single and dual-cylinder according to actual needs after startup. This method of starting single or dual cylinders regardless of the actual situation is relatively simple, and the compressor starting method is relatively simple, because the starting mode of the dual-cylinder variable-capacity compressor is not determined according to the actual situation at the time of startup. In the dynamic mode, the starting mode of the two-cylinder variable capacity compressor may not match the actual demand at the time of startup. For example, it may happen that only a single-cylinder startup is actually required, but a double-cylinder startup is performed, resulting in high energy consumption and low energy efficiency. Alternatively, it may happen that a double-cylinder startup is actually required, but a single-cylinder startup is performed, resulting in failure to start successfully or failure to cool or heat quickly. Therefore, there will be problems such as low energy efficiency, poor starting reliability and low air conditioning efficiency. In addition, the state of the compressor at startup may be inconsistent with the state of the compressor required after startup, and subsequent single-cylinder and double-cylinder switching will be required, which is more complicated and noisy, affecting the performance of the air conditioner.

[0062] Based on the above findings, the present application provides an air conditioner startup method, a controller, an air conditioner, a computer storage medium, and a computer program product to improve the performance of the air conditioner.

[0063] Figures 1-4 The air conditioner and the air conditioner starting method thereof of the present application are exemplarily shown.

[0064] For ease of understanding, first combine Figure 1 The structure of the air conditioner will be described.

[0065] See also Figure 1 The air conditioner 100 includes an outdoor unit 10 and an indoor unit 20. The outdoor unit 10 and the indoor unit 20 are connected to form a refrigerant circulation loop 9 for circulating refrigerant to achieve air conditioning functions such as cooling and heating.

[0066] In some embodiments, the air conditioner 100 includes multiple (i.e., at least two) indoor units 20, which are connected in parallel. In this case, the air conditioner 100 is a multi-split air conditioner. Furthermore, in some embodiments, the air conditioner 100 is a multi-split inverter air conditioner. In this case, the air conditioner 100 is not only a multi-split air conditioner, but also an inverter air conditioner.

[0067] The outdoor unit 10 includes a two-cylinder variable capacity compressor 1, an oil separator 2, a four-way valve 3, a first heat exchanger 4, and a gas-liquid separator 5. The two-cylinder variable capacity compressor 1, the oil separator 2, the four-way valve 3, the first heat exchanger 4, and the gas-liquid separator 5 are all located on the refrigerant circulation loop 9.

[0068] The four-way valve 3 is switched to change the flow direction of the refrigerant in the refrigerant circulation loop 9, thereby changing the operation mode of the air conditioner 100, so that the air conditioner 100 can be switched between cooling and heating modes.

[0069] During the startup of the air conditioner, in both cooling and heating modes, it is mainly the heating mode that involves the problem of reversing the four-way valve. Because, when cooling, the air conditioner 100 circulates according to the natural path of "two-cylinder variable capacity compressor → outdoor condensation → indoor evaporation" without changing the flow direction; while when heating, a reverse cycle is required, and the functions of the internal and external units must be switched through the four-way valve 3 (the evaporator and the condenser are interchanged) in order to "pump" the outdoor heat into the room. Usually after the air conditioner is shut down, the four-way valve will return to the state corresponding to the cooling mode. Therefore, if the target working mode at startup is cooling mode, the four-way valve usually does not need to be reversed, and if the target working mode at startup is heating mode, the four-way valve usually needs to be reversed.

[0070] Continue to see Figure 1The two-cylinder variable capacity compressor 1 has a variable capacity port 8, and two control branches are provided at the variable capacity port 8, which are used to realize the single-cylinder and double-cylinder switching of the two-cylinder variable capacity compressor 1. Among them, a first branch is provided between the variable capacity port 8 and the inlet of the gas-liquid separator 5, and a low-pressure solenoid valve 6 is provided on the corresponding first branch, and a second branch is provided between the variable capacity port 8 and the outlet of the oil separator 2, and a high-pressure solenoid valve 7 is provided on the second branch. In this way, by controlling the on and off of the low-pressure solenoid valve 6 and the high-pressure solenoid valve 7, it is possible to control whether the variable capacity port 8 passes through low-pressure gas or high-pressure gas, change the gas pressure of the variable capacity port 8, and thereby change the stress state of the components (such as the vane) inside the two-cylinder variable capacity compressor 1 for controlling whether the large cylinder is unloaded, control whether the large cylinder is unloaded, and thereby realize the switching between the single-cylinder and double-cylinder modes.

[0071] Specifically, when the low-pressure solenoid valve 6 is in the on state and the high-pressure solenoid valve 7 is in the off state, low-pressure gas is introduced into the variable capacity port 8, the large cylinder is unloaded, and the two-cylinder variable capacity compressor 1 is in the single-cylinder mode; when the high-pressure solenoid valve 7 is in the on state and the low-pressure solenoid valve 6 is in the off state, high-pressure gas is introduced into the variable capacity port 8, the large cylinder is not unloaded, and the two-cylinder variable capacity compressor 1 is in the two-cylinder mode.

[0072] The low-pressure solenoid valve 6, high-pressure solenoid valve 7, two-cylinder variable displacement compressor 1, and four-way valve 3 described above all operate under the control of a controller of the air conditioner 100. The controller includes a memory and a processor coupled to the memory. The processor is configured to execute the air conditioner startup method according to any embodiment of the present application based on instructions stored in the memory.

[0073] Next, combine Figure 2-Figure 4 The air conditioner starting method of the present application is described.

[0074] See also Figure 2 In this application, the air conditioner startup method includes:

[0075] S100, in response to a start-up instruction of the air conditioner 100, obtaining at least one of information on whether the four-way valve 3 of the air conditioner 100 needs to be reversed, a startup load of the air conditioner 100, and outdoor ambient temperature;

[0076] S200 , controlling the two-cylinder variable capacity compressor 1 of the air conditioner 100 to start a single cylinder or two cylinders according to at least one of the acquired information of whether the four-way valve 3 of the air conditioner 100 needs to be reversed, the startup load of the air conditioner 100 , and the outdoor ambient temperature.

[0077] The above scheme no longer performs single-cylinder startup or double-cylinder startup in a one-size-fits-all manner when starting the air conditioner 100 having the double-cylinder variable-capacity compressor 1. Instead, two modes of single-cylinder startup and double-cylinder startup are provided for selection. The single-cylinder startup or double-cylinder startup is determined based on whether the four-way valve 3 of the air conditioner 100 needs to be reversed at startup, the startup load of the air conditioner 100, and at least one of the outdoor ambient temperature information. Since the need for reversing the four-way valve 3, the startup load of the air conditioner 100, and the outdoor ambient temperature can all reflect the actual needs when the air conditioner 100 is started, the single-cylinder startup or double-cylinder startup of the double-cylinder variable-capacity compressor 1 is determined based on whether the four-way valve 3 of the air conditioner 100 needs to be reversed at startup, the startup load of the air conditioner 100, and at least one of the outdoor ambient temperature information. Starting can make the starting mode of the two-cylinder variable-capacity compressor 1 of the same air conditioner 100 no longer limited to one of the single-cylinder and two-cylinder modes, but can be selected between the single-cylinder mode and the two-cylinder mode according to actual needs, forming a starting method that determines the starting mode of the two-cylinder variable-capacity compressor according to actual needs. In this way, the starting mode of the two-cylinder variable-capacity compressor 1 is more in line with actual needs. For example, single-cylinder starting can be performed under conditions of low load to reduce energy consumption and improve energy efficiency. Double-cylinder starting can also be performed under conditions of starting difficulty and the presence of rapid cooling and heating needs. The characteristics of the double-cylinder starting, such as sufficient horsepower and fast pressure difference establishment, are used to improve starting reliability and meet rapid cooling and heating needs. Therefore, it is beneficial to improve the energy efficiency, starting reliability and air conditioning efficiency of the air conditioner 100, and improve the performance of the air conditioner 100.

[0078] Moreover, based on whether the four-way valve 3 of the air conditioner 100 needs to be reversed at startup, the startup load of the air conditioner 100 and at least one of the outdoor ambient temperature information, it is determined whether the two-cylinder variable-capacity compressor 1 is started with a single cylinder or a double cylinder, so that the startup mode of the two-cylinder variable-capacity compressor 1 is more in line with actual needs, and it is also beneficial to make the compressor operating state at startup more consistent with the operating state required in the actual operation process after startup, reduce the single-cylinder and double-cylinder switching after the air conditioner is started, and then simplify the air conditioning control process, reduce the noise and other problems caused by the single-cylinder and double-cylinder switching, which is also beneficial to improve the performance of the air conditioner 100.

[0079] It can be seen that based on the above steps S100 and S200, when the air conditioner 100 needs to be started, whether the four-way valve 3 of the air conditioner 100 needs to be reversed, at least one of the startup load of the air conditioner 100 and the outdoor ambient temperature information is first obtained, and then according to whether the four-way valve 3 of the air conditioner 100 needs to be reversed, the startup load of the air conditioner 100 and at least one of the outdoor ambient temperature information obtained, the two-cylinder variable capacity compressor 1 of the air conditioner 100 is controlled to perform single-cylinder or double-cylinder startup, which is beneficial to improving the energy efficiency, startup reliability and air conditioning efficiency of the air conditioner 100, as well as reducing the number of single-cylinder and double-cylinder switching after startup, thereby improving the performance of the air conditioner 100.

[0080] Specifically, see Figure 3 and Figure 4 In some embodiments, step S200 controls the dual-cylinder variable capacity compressor 1 of the air conditioner 100 to start a single cylinder or two cylinders based on at least one of the acquired information of whether the four-way valve 3 of the air conditioner 100 needs to be reversed, the startup load of the air conditioner 100, and the outdoor ambient temperature, including:

[0081] When the target operating mode of the air conditioner 100 is the heating mode, the two-cylinder variable capacity compressor 1 is controlled to start a single cylinder or two cylinders according to whether the four-way valve 3 needs to be reversed, the startup load of the air conditioner 100 and at least one of the outdoor ambient temperature information.

[0082] For the heating mode, when the air conditioner is started, whether the four-way valve 3 needs to be reversed, at least one of the startup load of the air conditioner 100 and the outdoor ambient temperature information is obtained, and based on the obtained whether the four-way valve 3 needs to be reversed, the startup load of the air conditioner 100 and at least one of the outdoor ambient temperature information, the two-cylinder variable-capacity compressor 1 is controlled to perform single-cylinder and double-cylinder startup. This can improve the matching degree between the startup mode of the two-cylinder variable-capacity compressor 1 in the heating mode and actual needs, effectively reduce the number of single-cylinder and double-cylinder switching of the air conditioner 100 in the heating mode, and improve the energy efficiency, startup reliability and heating efficiency of the air conditioner 100 in the heating mode. Therefore, the performance of the air conditioner 100 can be improved.

[0083] For example, see Figure 3 In some embodiments, when the target operating mode of the air conditioner 100 is the heating mode, controlling the two-cylinder variable capacity compressor 1 to perform single-cylinder startup or two-cylinder startup based on whether the four-way valve 3 needs to be reversed, the startup load of the air conditioner 100, and outdoor ambient temperature information includes:

[0084] When the target operating mode of the air conditioner 100 is the heating mode and the four-way valve 3 needs to be reversed, the two-cylinder variable capacity compressor 1 is controlled to perform two-cylinder startup.

[0085] As previously mentioned, when the air conditioner 100 is in heating mode, the issue of four-way valve reversal arises. During actual operation, after the dual-cylinder variable-capacity compressor is started, a pressure differential gradually builds between the system's high and low pressures. The four-way valve will only reverse when the pressure differential reaches the reversal condition for the four-way valve. In view of this situation, the above solution controls the dual-cylinder variable-capacity compressor 1 to perform dual-cylinder startup when the target operating mode of the air conditioner 100 is heating mode and the four-way valve 3 requires reversal. This solution utilizes the fact that during dual-cylinder startup, both cylinders of the dual-cylinder variable-capacity compressor 1 operate simultaneously, resulting in a greater exhaust volume than during single-cylinder startup, allowing for a more rapid and reliable establishment of a pressure differential. This allows for smooth reversal of the four-way valve 3, effectively preventing the inability to reverse the four-way valve 3 or prolonged reversal due to a small pressure differential or an inability to quickly establish a pressure differential, which could affect the smooth startup of the air conditioner 100. This effectively improves the startup reliability of the air conditioner 100 in heating mode and enhances the performance of the air conditioner 100.

[0086] For another example, see Figure 3 In some embodiments, when the target operating mode of the air conditioner 100 is the heating mode, controlling the two-cylinder variable capacity compressor 1 to start a single cylinder or two cylinders according to whether the four-way valve 3 needs to be reversed, the startup load of the air conditioner 100, and the outdoor ambient temperature information includes:

[0087] When the target operating mode of the air conditioner 100 is the heating mode and the four-way valve 3 does not need to be reversed, the two-cylinder variable capacity compressor 1 is controlled to start a single cylinder or two cylinders according to the ambient temperature.

[0088] In heating mode, the issue of reversing the four-way valve is raised. However, in some cases, the four-way valve 3 may not need to be reversed. For example, if the four-way valve 3 was in the valve position required for heating mode when the air conditioner was last shut down (perhaps due to an abnormal shutdown of the air conditioner, or the four-way valve was unable to return to the state corresponding to cooling mode due to some special reason), then when the air conditioner is restarted for heating, the four-way valve 3 does not need to be reversed. Therefore, when the target operating mode of the air conditioner 100 is heating mode, the four-way valve 3 does not necessarily need to be reversed, and there is a possibility that reversal is not required.

[0089] In the case where the target operating mode of the air conditioner 100 is the heating mode and the four-way valve 3 does not need to be reversed, the ambient temperature factor is further considered, and the two-cylinder variable-capacity compressor 1 is controlled to start up a single cylinder or two cylinders according to the ambient temperature. This is conducive to further improving the matching degree between the start-up mode of the two-cylinder variable-capacity compressor 1 in the heating mode and the actual demand, thereby more effectively improving the performance of the air conditioner 100. This is because the ambient temperature also affects whether the air conditioner can start smoothly and whether it can heat quickly in the heating mode. For example, compared with the case of a higher ambient temperature, when the ambient temperature is low, it is more difficult for the air conditioner to start smoothly, the heating demand is greater, the difficulty of heating quickly is higher, and the heating efficiency is lower. In view of the fact that the target working mode of the air conditioner 100 is the heating mode and the four-way valve 3 does not need to be reversed, the ambient temperature factor is further considered, and the two-cylinder variable-capacity compressor 1 is controlled to perform single-cylinder or double-cylinder startup according to the ambient temperature. In this way, the influence of the ambient temperature on the startup smoothness and the heating speed can be further considered without worrying about the four-way valve being unable to reverse smoothly and affecting the startup smoothness, so as to further improve the startup reliability and heating efficiency of the air conditioner 100 in the heating mode and improve the performance of the air conditioner 100.

[0090] It will be appreciated that the ambient temperature includes at least one of the outdoor ambient temperature and the indoor ambient temperature. For example, in some embodiments, the ambient temperature is the outdoor ambient temperature. In heating mode, the outdoor ambient temperature has a greater impact on whether the air conditioner can start smoothly and whether it can heat quickly. Therefore, controlling the start-up of the two-cylinder variable-capacity compressor 1 based on the outdoor ambient temperature is more conducive to improving the startup reliability and heating efficiency of the air conditioner 100 in heating mode.

[0091] See also Figure 3 As an example of controlling the two-cylinder variable displacement compressor 1 to start a single cylinder or two cylinders according to the ambient temperature when the target operating mode of the air conditioner 100 is the heating mode and the four-way valve 3 does not need to be reversed, the control of the two-cylinder variable displacement compressor 1 to start a single cylinder or two cylinders according to the ambient temperature includes:

[0092] According to the relationship between the ambient temperature and the temperature threshold, the two-cylinder variable capacity compressor 1 is controlled to start a single cylinder or two cylinders.

[0093] The relationship between the ambient temperature and the temperature threshold can reflect the ambient temperature. Therefore, the dual-cylinder variable-capacity compressor 1 can be controlled to start up a single cylinder or a dual cylinder based on the relationship between the ambient temperature and the temperature threshold. This effectively improves the startup reliability and heating efficiency of the air conditioner 100 in the heating mode, thereby improving the performance of the air conditioner 100. Furthermore, using this approach, only whether the ambient temperature is higher than the temperature threshold can be compared, without considering other factors such as the difference between the ambient temperature and the temperature threshold. This also helps to simplify the startup process, allowing the air conditioner 100 to start up smoothly and efficiently based on a relatively simple control process.

[0094] The temperature threshold can be predetermined and can take different values ​​depending on actual conditions. For example, in some embodiments, the temperature threshold is greater than or equal to 7°C and less than or equal to 15°C. For example, in some embodiments, the temperature threshold is 7°C, 8°C, 9°C, 10°C, 11°C, 12°C, 13°C, 14°C, or 15°C. In this case, the temperature threshold is relatively appropriate and can meet the startup requirements in most cases in heating mode. It can also better match the startup process with actual needs, achieving a more efficient and reliable heating startup process.

[0095] See also Figure 3 As an example of controlling the two-cylinder variable displacement compressor 1 to start a single cylinder or two cylinders based on the relationship between the ambient temperature and the temperature threshold when the target operating mode of the air conditioner 100 is the heating mode and the four-way valve 3 does not need to be reversed, the control of the two-cylinder variable displacement compressor 1 to start a single cylinder or two cylinders based on the relationship between the ambient temperature and the temperature threshold includes:

[0096] When the ambient temperature is lower than the temperature threshold, the dual-cylinder variable capacity compressor 1 is controlled to perform dual-cylinder startup.

[0097] The ambient temperature is less than the temperature threshold, indicating that the ambient temperature is low. When the target operating mode of the air conditioner 100 is the heating mode and the four-way valve 3 does not need to be reversed, if the ambient temperature is less than the temperature threshold and the ambient temperature is low, then since the four-way valve 3 does not need to be reversed, there is no need to worry about the low ambient temperature affecting the smooth establishment of the pressure difference, thereby affecting the smooth reversing of the four-way valve 3 and affecting the smooth startup of the air conditioner 100. However, due to the low ambient temperature, the smooth startup may still be affected by affecting the lubricating oil, etc., and the low ambient temperature means that the heating demand is large and the difficulty of rapid heating is high. Therefore, in this case, although the single-cylinder starting method can also be used, the dual-cylinder starting method is more conducive to smooth startup and rapid heating, improving the startup reliability and heating efficiency of the air conditioner 100 in the heating mode, and improving the performance of the air conditioner 100.

[0098] It can be seen that when the target working mode of the air conditioner 100 is the heating mode and the four-way valve 3 does not need to be reversed, the influence of the ambient temperature is further considered, and when the ambient temperature is lower than the temperature threshold, the two-cylinder variable capacity compressor 1 is controlled to perform two-cylinder start-up, which can further improve the startup reliability of the heating mode in a low-temperature environment and improve the heating efficiency in a low-temperature environment.

[0099] Furthermore, when the target operating mode of the air conditioner 100 is heating mode and the four-way valve 3 does not require reversal, further consideration of the ambient temperature can be used to control the two-cylinder variable displacement compressor 1 to perform a two-cylinder start-up when the ambient temperature is below a temperature threshold. This can also effectively address the issue of liquid carryover noise during low-temperature startup and reduce startup noise. This is because, in low-temperature heating mode, even if a single-cylinder start-up successfully occurs, a subsequent switch to a two-cylinder start-up is required to meet higher heating requirements. The entire startup process involves starting the two-cylinder variable displacement compressor and switching cylinders, which takes a long time. Furthermore, when switching from a single cylinder to a two-cylinder start-up, there is a sudden change in state. Liquid accumulation in the two-cylinder variable displacement compressor cavity can easily generate noise, thus causing the issue of liquid carryover noise during low-temperature startup. In contrast, in low-temperature heating mode, a two-cylinder start-up eliminates the single-cylinder to two-cylinder switching process. This not only shortens the time and improves efficiency, but also gradually increases the frequency from 0, eliminating sudden changes in state. This is a flexible startup process. Therefore, it can also effectively address the issue of liquid carryover noise during low-temperature startup, achieving a more efficient and quiet air conditioner startup process.

[0100] As mentioned above, in some embodiments, when the target working mode of the air conditioner 100 is the heating mode and the four-way valve 3 needs to be reversed, the influence of the ambient temperature is not considered, and the double-cylinder start-up is directly performed, that is, regardless of whether the ambient temperature is greater than the temperature threshold, the double-cylinder start-up is performed. It is mentioned here that in some embodiments, when the target working mode of the air conditioner 100 is the heating mode, the four-way valve 3 needs to be reversed, and the ambient temperature is less than the temperature threshold, the double-cylinder start-up is performed. The combination of these two start-up schemes means that when the target working mode of the air conditioner 100 is the heating mode and the ambient temperature is less than the temperature threshold, regardless of whether the four-way valve 3 needs to be reversed, the double-cylinder start-up is performed. That is to say, when the ambient temperature is low, the heating mode directly performs the double-cylinder start-up, and no distinction is made as to whether the four-way valve needs to be reversed. In this way, the heating mode can be smoothly started in a low-temperature environment, and rapid heating can be achieved in a low-temperature environment, and the startup noise of the heating mode in a low-temperature environment can be reduced.

[0101] See also Figure 4When directly using the dual-cylinder start-up method in heating mode under low temperature conditions, after receiving the start-up command and determining that the target working mode is heating mode, it is also possible not to obtain the status of the four-way valve first, and not to consider whether the four-way valve needs to be switched. Instead, the ambient temperature and the relationship between the ambient temperature and the temperature threshold are considered first. Only when the ambient temperature is greater than or equal to the temperature threshold, that is, when the ambient temperature is high, the status of the four-way valve is considered, that is, whether the four-way valve needs to be switched. The ambient temperature here refers specifically to the outdoor ambient temperature, that is, see Figure 4 , when the double-cylinder start-up method of the heating mode is directly adopted in a low-temperature environment, after receiving the start-up command and determining that the target working mode is the heating mode, the state of the four-way valve can be not obtained first, and whether the four-way valve needs to be reversed can be not considered first. Instead, the high or low temperature of the outdoor environment and the relationship between the outdoor environment temperature and the temperature threshold can be considered first. When the outdoor environment temperature is lower than the temperature threshold, the double-cylinder start-up is directly performed to achieve a smoother, more efficient and low-noise heating mode start-up process in a low-temperature environment, thereby improving the performance of the air conditioner. When the outdoor environment temperature is greater than or equal to the temperature threshold, the ambient temperature is higher. When the four-way valve is in operation, the state of the four-way valve and the startup load can be considered. For example, whether the four-way valve is to be reversed can be considered first. When the four-way valve needs to be reversed, double-cylinder startup can be performed to facilitate smooth reversal of the four-way valve and improve the startup reliability of the heating mode. When the four-way valve does not need to be reversed, the influence of the startup load can be further considered. According to the startup load, double-cylinder or single-cylinder startup can be performed. For example, single-cylinder or double-cylinder startup can be performed according to the startup load startup method mentioned below to meet the different needs of high and low loads, improve energy efficiency under low load, and rapid heating needs under high load, and improve the performance of the air conditioner 100.

[0102] In addition, back to Figure 3 In some embodiments, when the target operating mode of the air conditioner 100 is the heating mode and the four-way valve 3 does not need to be switched, controlling the two-cylinder variable displacement compressor 1 to start a single cylinder or two cylinders according to the relationship between the ambient temperature and the temperature threshold includes:

[0103] When the ambient temperature is greater than or equal to the temperature threshold, the two-cylinder variable capacity compressor 1 is controlled to start a single cylinder or two cylinders according to the startup load of the air conditioner 100 .

[0104] The ambient temperature is greater than or equal to the temperature threshold, which means that the ambient temperature is high. When the target operating mode of the air conditioner 100 is the heating mode and the four-way valve 3 does not need to be reversed, if the ambient temperature is greater than or equal to the temperature threshold and the ambient temperature is high, the air conditioner 100 will not be unable to start smoothly due to the inability of the four-way valve to reverse smoothly, nor will it be easily unable to start smoothly due to reasons such as poor lubricating oil fluidity. In this case, further considering the influence of the startup load, according to the level of the startup load, the two-cylinder variable capacity compressor 1 is controlled to start single-cylinder or double-cylinder. Under the premise of achieving smooth startup of the air conditioner in the corresponding situation, the startup process in the corresponding situation can be made more compatible with the startup load demand. Either the startup demand under low startup load is met by single-cylinder startup, reducing energy consumption and improving energy efficiency, or the startup demand under high startup load is met by double-cylinder startup, meeting high heating demand. Therefore, it is more conducive to improving the startup reliability and energy efficiency of the heating mode under the corresponding high ambient temperature and when the four-way valve does not need to be reversed, thereby improving the air conditioner performance.

[0105] For example, in some embodiments, controlling the dual-cylinder variable capacity compressor 1 to start a single cylinder or two cylinders according to the startup load of the air conditioner 100 includes:

[0106] According to the relationship between the startup load of the air conditioner 100 and the load threshold, the two-cylinder variable capacity compressor 1 is controlled to start a single cylinder or two cylinders.

[0107] The relationship between the startup load and the load threshold can reflect the level of the startup load. Therefore, based on the relationship between the startup load of the air conditioner 100 and the load threshold, the two-cylinder variable-capacity compressor 1 is controlled to start up with either a single cylinder or a dual cylinder. This effectively balances the energy efficiency and startup reliability of the air conditioner 100. Furthermore, using this approach, only whether the startup load is higher than the load threshold can be compared, without considering other factors such as the difference between the startup load and the load threshold. This also helps simplify the startup process, allowing for smooth and energy-efficient startup of the air conditioner 100 based on a relatively simple control process.

[0108] Specifically, see Figure 3 In some embodiments, controlling the dual-cylinder variable capacity compressor 1 to start a single cylinder or two cylinders according to the relationship between the startup load of the air conditioner 100 and the load threshold includes:

[0109] When the startup load is less than the load threshold, the two-cylinder variable capacity compressor 1 is controlled to start a single cylinder.

[0110] The startup load is less than the load threshold, indicating that the startup load is low. In this case, starting the two-cylinder variable capacity compressor 1 with a single cylinder can maintain high efficiency, reduce energy consumption, and improve energy efficiency while meeting the lower startup load requirement.

[0111] Also, see Figure 3 In some embodiments, controlling the dual-cylinder variable capacity compressor 1 to start a single cylinder or two cylinders according to the relationship between the startup load of the air conditioner 100 and the load threshold includes:

[0112] When the startup load is greater than or equal to the load threshold, the two-cylinder variable capacity compressor 1 is controlled to perform two-cylinder startup.

[0113] The startup load is greater than or equal to the load threshold, indicating that the startup load is high. In this case, starting the dual-cylinder variable capacity compressor 1 with two cylinders can effectively meet the high load demand and achieve a fast room temperature adjustment process.

[0114] It will be understood that the startup load refers to the energy consumption and operating pressure during the startup phase, which is affected by factors such as temperature difference, machine type, and device status, and can be expressed as a percentage. In some embodiments, the startup load is determined based on at least one of the number of indoor units 20 to be started in the air conditioner 100, the outdoor ambient temperature, the indoor ambient temperature, and the target windage of the air conditioner 100. This allows for accurate determination of the startup load, enabling a startup process that better meets actual needs and improving air conditioner performance. For example, if the air conditioner 100 is a multi-split air conditioner, the startup load can be determined based on the number of indoor units 20 to be started in the air conditioner 100, the outdoor ambient temperature, the indoor ambient temperature, and the target windage of the air conditioner 100. The startup load is primarily affected by the number of indoor units 20 to be started. For example, even when the outdoor ambient temperature is low, if a large number of indoor units 20 to be started are required, the startup load may exceed the load threshold, indicating a high load condition.

[0115] In addition, in the aforementioned embodiments, the load threshold can be predetermined and can take different values ​​based on actual conditions. For example, in some embodiments, the load threshold is greater than or equal to 25% and less than or equal to 35%. For example, in some embodiments, the load threshold is 25%, 28%, 30%, 32%, or 35%. In this case, the load threshold is appropriately sized to meet the startup requirements in most situations, and can better align the startup process with actual needs, achieving a more energy-efficient and reliable startup process.

[0116] The above mainly introduces an example of the air conditioner startup method of the present application in the heating mode. Next, an example of the air conditioner startup method of the present application in the cooling mode will be introduced.

[0117] See also Figure 3 and Figure 4In some embodiments, when the target operating mode of the air conditioner 100 is the cooling mode, the aforementioned step S200 controls the two-cylinder variable capacity compressor 1 of the air conditioner 100 to start a single cylinder or two cylinders based on at least one of the acquired information of whether the four-way valve 3 of the air conditioner 100 needs to be reversed, the startup load of the air conditioner 100, and the outdoor ambient temperature, including:

[0118] According to the startup load of the air conditioner 100, the two-cylinder variable capacity compressor 1 is controlled to start a single cylinder or two cylinders.

[0119] As mentioned above, in cooling mode, the problem of four-way valve reversing is usually not involved. Moreover, even in some special circumstances, such as abnormal shutdown, the four-way valve fails to return to the state corresponding to the cooling mode, the four-way valve needs to be reversed when the target working mode is cooling mode. However, since the ambient temperature is usually high in cooling mode, there is usually no problem of unsuccessful four-way valve reversing due to low ambient temperature and slow pressure difference establishment. Therefore, when the target working mode is cooling mode when the air conditioner is started, the four-way valve reversing problem does not need to be considered. In this case, the two-cylinder variable capacity compressor 1 is directly controlled to perform single-cylinder or double-cylinder startup according to the startup load, which can simplify the startup process in cooling mode and make the startup process in cooling mode more consistent with the actual startup load, effectively taking into account energy efficiency, startup reliability and cooling effect.

[0120] In the cooling mode, the specific process of controlling the two-cylinder variable capacity compressor 1 to start a single cylinder or two cylinders according to the startup load can refer to the process of controlling the two-cylinder variable capacity compressor 1 to start a single cylinder or two cylinders according to the startup load in the aforementioned heating mode. For example, when the startup load is less than the load threshold, the two-cylinder variable capacity compressor 1 can be started by a single cylinder to improve energy efficiency. When the startup load is greater than or equal to the load threshold, the two-cylinder variable capacity compressor 1 can be started by a double cylinder to meet high load requirements and achieve a rapid cooling effect. The load threshold in the cooling mode can be the same as or different from the load threshold in the aforementioned heating mode.

[0121] Next, we will further introduce Figures 1-4 The embodiment shown.

[0122] like Figure 1As shown, in this embodiment, the air conditioner 100 is a multi-split variable frequency air conditioner, which includes multiple indoor units 20. The variable capacity port 8 of its two-cylinder variable capacity compressor 1 is connected to the inlet of the gas-liquid separator 5 through a low-pressure solenoid valve 6, and is connected to the outlet of the oil separator 2 through a high-pressure solenoid valve 7. This allows the embodiment to change the pressure of the variable capacity port 8 by switching the high and low pressure solenoid valves on and off, thereby controlling the two-cylinder variable capacity compressor 1 to switch between single and double cylinder states. When the low-pressure solenoid valve 6 is in the on state and the high-pressure solenoid valve 7 is in the off state, low-pressure gas is introduced into the variable capacity port 8, the large cylinder is unloaded, and the two-cylinder variable capacity compressor 1 is in the single cylinder state. When the high-pressure solenoid valve 7 is in the on state and the low-pressure solenoid valve 6 is in the off state, high-pressure gas is introduced into the variable capacity port 8, the large cylinder is not unloaded, and the two-cylinder variable capacity compressor 1 is in the double cylinder state.

[0123] When the air conditioner 100 of this embodiment is started, Figure 2 In the manner shown, after receiving the start-up instruction, at least one of the information of whether the four-way valve 3 needs to be reversed, the startup load, and the outdoor ambient temperature is obtained, and then the two-cylinder variable capacity compressor 1 is controlled to start a single cylinder or two cylinders according to at least one of the obtained information of whether the four-way valve 3 needs to be reversed, the startup load, and the outdoor ambient temperature.

[0124] Specifically, when the air conditioner 100 of this embodiment is started, it can be used Figure 3 or Figure 4 The method shown, that is, after receiving the start-up instruction, first obtain the target working mode information of the air conditioner 100 (that is, the working mode that needs to be operated after startup) to determine whether the target working mode of the air conditioner 100 is a heating mode or a cooling mode. Then, based on the target working mode, obtain whether the four-way valve 3 needs to be reversed, at least one of the startup load and the outdoor ambient temperature information, and control the two-cylinder variable capacity compressor 1 to perform single-cylinder or two-cylinder startup based on at least one of the four-way valve 3 needs to be reversed, the startup load and the outdoor ambient temperature information. Figure 3 and Figure 4 The two starting methods shown are the same in the cooling mode. The main difference lies in the starting method in the heating mode, that is, whether to first obtain the information on whether the four-way valve needs to be reversed or the ambient temperature information.

[0125] More specifically, if Figure 3 and Figure 4As shown, when the target working mode of the air conditioner 100 is the cooling mode, the startup load is obtained, and the startup load is compared with the load threshold (for example, 30%). When the startup load is less than the load threshold, the low-pressure solenoid valve 6 is controlled to be turned on and the high-pressure solenoid valve 7 is turned off, so that the two-cylinder variable-capacity compressor 1 starts with a single cylinder. When the startup load is greater than or equal to the load threshold, the low-pressure solenoid valve 6 is controlled to be turned off and the high-pressure solenoid valve 7 is controlled to be turned on, so that the two-cylinder variable-capacity compressor 1 starts with a double cylinder.

[0126] When the target operating mode of the air conditioner 100 is the heating mode, the Figure 3 As shown, the state of the four-way valve 3 is first obtained to determine whether the four-way valve 3 needs to be reversed. Then, when the four-way valve 3 needs to be reversed, the low-pressure solenoid valve 6 is controlled to be disconnected and the high-pressure solenoid valve 7 is turned on, so that the two-cylinder variable capacity compressor 1 starts the two cylinders, so as to quickly establish a sufficient pressure difference, realize the smooth reversal of the four-way valve 3, and improve the starting reliability; and when the four-way valve 3 does not need to be reversed, the ambient temperature (specifically the outdoor ambient temperature) is further obtained, and the ambient temperature is compared with a temperature threshold (for example, 15°C). When the ambient temperature is less than the temperature threshold, the low-pressure solenoid valve 6 is controlled to be turned on. Valve 6 is disconnected and high-pressure solenoid valve 7 is turned on, so that the two-cylinder variable-capacity compressor 1 starts with two cylinders to quickly heat. When the ambient temperature is greater than or equal to the temperature threshold, the startup load information is further obtained, and the startup load is compared with the load threshold. When the startup load is less than the load threshold, the low-pressure solenoid valve 6 is controlled to be turned on and the high-pressure solenoid valve 7 is disconnected, so that the two-cylinder variable-capacity compressor 1 starts with a single cylinder. When the startup load is greater than or equal to the load threshold, the low-pressure solenoid valve 6 is controlled to be disconnected and the high-pressure solenoid valve 7 is turned on, so that the two-cylinder variable-capacity compressor 1 starts with two cylinders.

[0127] Alternatively, when the target operating mode of the air conditioner 100 is the heating mode, Figure 4 As shown, the ambient temperature (specifically, the outdoor ambient temperature) information is first obtained, and the ambient temperature is compared with the temperature threshold. When the ambient temperature is less than the temperature threshold, the two-cylinder startup is performed directly. When the ambient temperature is greater than or equal to the temperature threshold, the state information of the four-way valve is further obtained to determine whether the four-way valve 3 needs to be reversed. When the four-way valve 3 needs to be reversed, the two-cylinder variable-capacity compressor 1 is started with two cylinders. When the four-way valve 3 does not need to be reversed, the startup load information is further obtained, and the startup load is compared with the load threshold. When the startup load is less than the load threshold, the two-cylinder variable-capacity compressor 1 is started with a single cylinder. When the startup load is greater than or equal to the load threshold, the two-cylinder variable-capacity compressor 1 is started with two cylinders.

[0128] above Figure 3 and Figure 4The starting methods in the two heating modes shown can both enable direct double-cylinder starting in the heating mode when the outdoor ambient temperature is low, and double-cylinder starting when the four-way valve needs to be reversed when the outdoor ambient temperature is high. When the four-way valve does not need to be reversed, single-cylinder starting is performed when the startup load is low, and double-cylinder starting is performed when the startup load is high.

[0129] The startup method of this embodiment comprehensively considers factors such as the target working mode, startup load, ambient temperature and four-way valve state during the startup process of the air conditioner with a two-cylinder variable capacity compressor 1, and first considers the target working mode, and then considers at least one of the startup load, ambient temperature and four-way valve state for different target working modes. Specifically, for the cooling mode, only the influence of the startup load is considered, while for the heating mode, the influence of the outdoor ambient temperature, the four-way valve state and the startup load are considered in a hierarchical manner. In this way, the startup process can be more closely matched with the actual needs under different modes, achieving a more energy-efficient, highly reliable and low-noise startup process, and more effectively meeting the energy-saving, rapid cooling and heating and quiet requirements.

[0130] The air conditioner can be shut down normally with either a single or dual cylinder in operation. The status of the single or dual cylinder at shutdown can be recorded, providing a record of the single or dual cylinder status for the next startup, making it easier to determine whether the four-way valve needs to be switched.

[0131] Based on the air conditioner startup methods of the aforementioned embodiments, this application also provides a computer-readable storage medium and a computer program product. The computer-readable storage medium stores computer instructions, which are used by a processor to execute the air conditioner startup method of any embodiment. The computer program product includes a computer program that, when executed by a processor, implements the air conditioner startup method of any embodiment.

[0132] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application and are not intended to limit them. Although the present application has been described in detail with reference to preferred embodiments, ordinary technicians in the relevant field should understand that the specific implementation methods of the present application can still be modified or some technical features can be replaced by equivalents, which should all be included in the scope of the technical solutions requested for protection in this application.

Claims

1. An air conditioner starting method, characterized in that: include: In response to a start-up instruction of an air conditioner (100), obtaining at least one of information on whether a four-way valve (3) of the air conditioner (100) needs to be reversed, a startup load of the air conditioner (100), and outdoor ambient temperature; According to at least one of the acquired information of whether the four-way valve (3) of the air conditioner (100) needs to be reversed, the startup load of the air conditioner (100), and the outdoor ambient temperature, the double-cylinder variable capacity compressor (1) of the air conditioner (100) is controlled to start a single cylinder or a double cylinder.

2. The air conditioner startup method according to claim 1, characterized in that: Controlling a dual-cylinder variable capacity compressor (1) of the air conditioner (100) to start a single cylinder or a dual cylinder according to at least one of the acquired information of whether a four-way valve (3) of the air conditioner (100) needs to be reversed, the startup load of the air conditioner (100), and the outdoor ambient temperature comprises: When the target operating mode of the air conditioner (100) is the heating mode, controlling the two-cylinder variable capacity compressor (1) to start a single cylinder or two cylinders according to whether the four-way valve (3) needs to be reversed, the startup load of the air conditioner (100) and at least one of the outdoor ambient temperature information; and / or, When the target operating mode of the air conditioner (100) is the cooling mode, the dual-cylinder variable capacity compressor (1) is controlled to start a single cylinder or a dual cylinder according to the startup load of the air conditioner (100).

3. The air conditioner startup method according to claim 2, characterized in that: When the target operating mode of the air conditioner (100) is the heating mode, controlling the two-cylinder variable capacity compressor (1) to perform single-cylinder startup or two-cylinder startup according to at least one of whether the four-way valve (3) needs to be reversed, the startup load of the air conditioner (100), and the outdoor ambient temperature information includes: When the target operating mode of the air conditioner (100) is the heating mode and the four-way valve (3) needs to be reversed, the two-cylinder variable capacity compressor (1) is controlled to start the two cylinders; and / or, When the target operating mode of the air conditioner (100) is the heating mode and the four-way valve (3) does not need to be switched, the dual-cylinder variable capacity compressor (1) is controlled to start a single cylinder or a dual cylinder according to the ambient temperature.

4. The air conditioner startup method according to claim 3, characterized in that: The ambient temperature includes the outdoor ambient temperature.

5. The air conditioner startup method according to claim 3, characterized in that: Controlling the dual-cylinder variable capacity compressor (1) to start a single cylinder or a dual cylinder according to the ambient temperature includes: According to the magnitude relationship between the ambient temperature and the temperature threshold, the dual-cylinder variable capacity compressor (1) is controlled to start a single cylinder or a dual cylinder.

6. The air conditioner starting method according to claim 5, characterized in that: The temperature threshold is greater than or equal to 7°C and less than or equal to 15°C.

7. The air conditioner startup method according to claim 5, characterized in that: According to the magnitude relationship between the ambient temperature and the temperature threshold, controlling the dual-cylinder variable capacity compressor (1) to start a single cylinder or a dual cylinder comprises: When the ambient temperature is lower than the temperature threshold, controlling the dual-cylinder variable capacity compressor (1) to start the dual cylinders; and / or, When the ambient temperature is greater than or equal to the temperature threshold, the dual-cylinder variable capacity compressor (1) is controlled to start a single cylinder or a dual cylinder according to the startup load of the air conditioner (100).

8. The air conditioner startup method according to claim 2, characterized in that: When the target operating mode of the air conditioner (100) is the heating mode, controlling the two-cylinder variable capacity compressor (1) to start a single cylinder or two cylinders according to whether the four-way valve (3) needs to be reversed, the startup load of the air conditioner (100), and at least one of the outdoor ambient temperature information includes: When the target operating mode of the air conditioner (100) is the heating mode and the outdoor ambient temperature is less than a temperature threshold, controlling the dual-cylinder variable capacity compressor (1) to perform dual-cylinder startup; and / or, When the target operating mode of the air conditioner (100) is the heating mode and the outdoor ambient temperature is greater than or equal to a temperature threshold, the two-cylinder variable capacity compressor (1) is controlled to start a single cylinder or two cylinders according to whether the four-way valve (3) needs to be reversed.

9. The air conditioner starting method according to claim 8, characterized in that: When the target operating mode of the air conditioner (100) is the heating mode and the outdoor ambient temperature is greater than or equal to a temperature threshold, controlling the two-cylinder variable displacement compressor (1) to start a single cylinder or two cylinders according to whether the four-way valve (3) needs to be reversed includes: When the target operating mode of the air conditioner (100) is the heating mode, the outdoor ambient temperature is greater than or equal to the temperature threshold, and the four-way valve (3) needs to be reversed, the two-cylinder variable capacity compressor (1) is controlled to perform two-cylinder startup; and / or, When the target operating mode of the air conditioner (100) is the heating mode, the outdoor ambient temperature is greater than or equal to a temperature threshold, and the four-way valve (3) does not need to be reversed, the two-cylinder variable capacity compressor (1) is controlled to start a single cylinder or two cylinders according to the startup load of the air conditioner (100).

10. The air conditioner starting method according to claim 2, 7 or 9, characterized in that: Controlling the dual-cylinder variable capacity compressor (1) to start a single cylinder or a dual cylinder according to the startup load of the air conditioner (100) comprises: According to the magnitude relationship between the startup load of the air conditioner (100) and the load threshold, the dual-cylinder variable capacity compressor (1) is controlled to start a single cylinder or a dual cylinder.

11. The air conditioner starting method according to claim 10, characterized in that: Controlling the dual-cylinder variable capacity compressor (1) to start a single cylinder or a dual cylinder according to the magnitude relationship between the startup load of the air conditioner (100) and the load threshold comprises: When the startup load is less than the load threshold, controlling the two-cylinder variable capacity compressor (1) to start a single cylinder; and / or, When the startup load is greater than or equal to the load threshold, the dual-cylinder variable capacity compressor (1) is controlled to perform dual-cylinder startup.

12. The air conditioner starting method according to claim 10, characterized in that: The load threshold is greater than or equal to 25% and less than or equal to 35%.

13. The air conditioner startup method according to claim 2, 7 or 9, characterized in that: The startup load is determined based on at least one of the number of indoor units (20) that need to be started in the air conditioner (100), the outdoor ambient temperature, the indoor ambient temperature, and the target wind speed of the air conditioner (100).

14. A controller, characterized in that: The system comprises a memory and a processor coupled to the memory, wherein the processor is configured to execute the air conditioner startup method according to any one of claims 1 to 13 based on instructions stored in the memory.

15. An air conditioner (100), characterized in that: Comprising the controller of claim 14.

16. A computer-readable storage medium, characterized in that The computer-readable storage medium stores computer instructions, and the computer instructions are executed by a processor to implement the air conditioner startup method according to any one of claims 1 to 13.

17. A computer program product, comprising a computer program, wherein when the computer program is executed by a processor, the computer program implements the air conditioner startup method according to any one of claims 1 to 13.

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