Air conditioner and starting control method of air conditioner

Abstract

The application provides an air conditioner and a starting control method of the air conditioner, relates to the technical field of household electrical appliances, and aims to solve the technical problem of poor starting control reliability of the air conditioner in the prior art. The outdoor unit of the air conditioner comprises a first temperature detection device for detecting the environment of the outdoor unit, a second temperature detection device for detecting the exhaust temperature value of a compressor, a first pressure detection device for detecting the exhaust pressure value of the compressor, a second pressure detection device for detecting the suction pressure value of the compressor, a memory and a controller. The controller is configured to: in response to receiving a starting signal, acquire current operating parameters and historical operating parameters of the compressor, wherein the current operating parameters comprise at least one of the exhaust pressure value, the suction pressure value, the exhaust temperature value and the outdoor temperature value; determine a starting mode of the compressor according to the current operating parameters and / or the historical operating parameters; and control the compressor to operate in the starting mode.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of household appliances, and in particular to an air conditioner and a starting control method of the air conditioner. BACKGROUND

[0002] At present, an air conditioning system unit is started according to a predetermined frequency control scheme, and the starting mode is incremental and fixed, and the pause time is certain. With this scheme, it takes a long time to reach the full load output of the compressor, and it is difficult to achieve fast refrigeration and heating.

[0003] Moreover, the current air conditioning system starting control cannot adjust the starting scheme by itself according to the same control mode for some special engineering or installation conditions, and there is no correction for abnormal states of the system during the starting process, so the reliability of the air conditioning starting control is poor. SUMMARY

[0004] Embodiments of the present application provide an air conditioner and a starting control method of the air conditioner, to solve the technical problem of poor reliability of the starting control of the air conditioner in the related art.

[0005] To achieve the above object, embodiments of the present application adopt the following technical scheme:

[0006] In a first aspect, the present application provides an air conditioner, comprising: an outdoor unit having a compressor, the compressor comprising: an exhaust port and a suction port, the outdoor unit further comprising: a first temperature detection device, a second temperature detection device, a first pressure detection device, a second pressure detection device, a memory, and a controller, the first temperature detection device being arranged on the outdoor unit and configured to detect an outdoor temperature value of an environment in which the outdoor unit is located; the second temperature detection device being arranged at the exhaust port and configured to detect an exhaust temperature value of the compressor; the first pressure detection device being arranged at the exhaust port and configured to detect an exhaust pressure value of the compressor; the second pressure detection device being arranged at the suction port and configured to detect a suction pressure value of the compressor; the memory being configured to store historical running parameters of the air conditioner; and the controller being configured to: in response to receiving a starting signal, acquire current running parameters and the historical running parameters of the compressor, the current running parameters comprising at least one of the following: the exhaust pressure value, the suction pressure value, the exhaust temperature value, and the outdoor temperature value; determine a starting mode of the compressor according to the current running parameters and / or the historical running parameters; and control the compressor to run in the starting mode.

[0007] The air conditioner provided by the embodiment of the present application comprises: an outdoor unit with a compressor, wherein the compressor comprises: an exhaust port and a suction port. The outdoor unit further comprises: a first temperature detection device for detecting the environment of the outdoor unit, a second temperature detection device for detecting the exhaust temperature value of the compressor, a first pressure detection device for detecting the exhaust pressure value of the compressor, a second pressure detection device for detecting the suction pressure value of the compressor, a memory and a controller, wherein the controller is configured to: in response to receiving a start-up signal, acquire the current operating parameters and the historical operating parameters of the compressor, the current operating parameters comprising at least one of the following: the exhaust pressure value, the suction pressure value, the exhaust temperature value and the outdoor temperature value; determine the start-up mode of the compressor according to the current operating parameters and / or the historical operating parameters; and control the compressor to operate in the start-up mode. By acquiring the current operating parameters and the historical operating parameters (for example, the historical mode adjustment information of the air conditioner and the shutdown time of the previous compressor) of the compressor, the current state of the compressor and the operating environment of the compressor are determined, so that the start-up mode of the compressor is further determined, and the compressor is started in the start-up mode. In this way, the start-up mode of the compressor can be determined according to the state of the air conditioner unit, so as to ensure the reliability of the air conditioner and reduce the damage of the compressor caused by the mismatch between the start-up frequency of the compressor and the current state of the air conditioner unit.

[0008] In some embodiments, the memory further stores a correspondence table of the start-up mode and the start-up frequency; before the controller controls the compressor to operate in the start-up mode, the controller is further configured to: acquire, by the controller, the start-up frequency corresponding to the start-up mode from the memory; and the controller controls the compressor to operate in the start-up mode, comprising: the controller controls the compressor to operate in the start-up frequency.

[0009] In this way, the controller can acquire the correspondence table of the start-up mode and the start-up frequency from the memory, so as to determine the start-up frequency of the current start-up mode, and control the compressor to start in the start-up frequency, so as to reduce the damage of the compressor caused by the mismatch between the start-up frequency of the compressor and the current state of the air conditioner unit.

[0010] In some embodiments, the start-up mode comprises: a sleep start-up, a cold start-up, an oil return start-up, a defrosting start-up and a hot start-up, wherein in the sleep start-up mode, the compressor operates at a first operating frequency, and the first operating frequency H1 is:

[0011] H1 = K x H zmax ;

[0012] K = 0.5-0.8, and H zmax is the maximum frequency at which the compressor can operate;

[0013] In the cold start mode, the compressor operates at a second operating frequency; the second operating frequency H2 is:

[0014] H2 = H zmax ;

[0015] In the oil return start mode, the compressor operates at a third operating frequency; the third operating frequency H3 is:

[0016]

[0017] The L is a constant, the HP is the total capacity of the outdoor unit, and the M is the number of compressors in the unit;

[0018] In the defrosting start mode, the compressor operates at a fourth operating frequency; the fourth operating frequency H4 is:

[0019] H4 = H zdef ;

[0020] H zdef ≥ 50% x H zmax ;

[0021] In the hot start mode, the compressor operates at a fifth operating frequency; the fifth operating frequency H5 is:

[0022] H5 = H zstart ;

[0023] H zmin ≤ H zstart ≤ K x H zmax ;

[0024] The H zmin is the minimum frequency at which the compressor can operate.

[0025] In some embodiments, the controller determines the start mode according to the current operating parameters and / or the historical operating parameters, including: the controller obtains the last time of stopping operation of the compressor according to the historical operating parameters, determines the downtime of the compressor; determines whether the downtime of the compressor is greater than the first preset duration, and whether the current discharge pressure of the compressor minus the current suction pressure of the compressor is less than a first threshold value; if so, determines that the start mode is the sleep start.

[0026] In some embodiments, the controller determines the start mode according to the current operating parameters and / or the historical operating parameters, including: determines the start mode as the cold start according to the discharge temperature value of the compressor, the outdoor temperature value, the suction pressure of the compressor, and the discharge pressure value of the compressor; if so, determines that the start mode is the cold start.

[0027] In some embodiments, the controller determines the startup mode according to the current operating parameter and / or the historical operating parameter, including: determining a previous operating mode of the air conditioner according to the historical operating parameter; determining whether the previous operating mode of the air conditioner is the oil return operating mode; if yes, determining that the startup mode is the oil return startup.

[0028] In some embodiments, the controller determines the startup mode according to the current operating parameter and / or the historical operating parameter, including: determining a previous operating mode of the air conditioner according to the historical operating parameter; determining whether the previous operating mode of the air conditioner is the defrost operating mode; if yes, determining that the startup mode is the defrost startup.

[0029] In some embodiments, the controller determines the startup mode according to the current operating parameter and / or the historical operating parameter, including: the controller determines whether the startup mode is one of the sleep-in startup, the cold startup, the oil return startup and the defrost startup according to the current operating parameter and / or the historical operating parameter; if yes, determining that the startup mode is the sleep-in startup, the cold startup, the oil return startup or the defrost startup; if none of the above, determining that the startup mode is the hot startup.

[0030] In the second aspect, the present application provides a startup control method of an air conditioner, including: in response to receiving a startup signal, obtaining a current operating parameter and a historical operating parameter of the compressor, the current operating parameter including at least one of: an exhaust pressure value of the compressor, a suction pressure value of the compressor, an exhaust temperature value of the compressor and an outdoor temperature value; determining a startup mode of the compressor according to the current operating parameter and / or the historical operating parameter; and controlling the compressor to operate in the startup mode.

[0031] In some embodiments, before the step of controlling the compressor to operate in the startup mode, the method further includes: obtaining a startup frequency corresponding to the startup mode; and the step of controlling the compressor to operate in the startup mode includes: controlling the compressor to operate in the startup frequency.

[0032] In the third aspect, the present application provides a controller, including: one or more processors; one or more memories; wherein the one or more memories are configured to store computer program codes, the computer program codes including computer instructions, when the one or more processors execute the computer instructions, the controller executes any one of the startup control methods of the air conditioner provided in the second aspect.

[0033] In a fourth aspect, the embodiments of the present application provide a computer readable storage medium, which comprises computer instructions. When the computer instructions are controlled on a computer, the computer executes the method provided in the second aspect and possible implementation manners.

[0034] In a fifth aspect, the embodiments of the present application provide a computer program product, which can be directly loaded into a memory and contains software codes. The computer program product can realize the method provided in the second aspect and possible implementation manners after being loaded and executed by a computer.

[0035] It should be noted that the computer instructions described above can be stored on the computer readable storage medium in whole or in part. The computer readable storage medium can be packaged together with the processor of the controller or packaged separately from the processor of the controller, and the present application does not limit this.

[0036] The beneficial effects of the second aspect to the fifth aspect described in the present application can be analyzed with reference to the beneficial effects of the first aspect, which will not be repeated here. BRIEF DESCRIPTION OF DRAWINGS

[0037] Figure 1 A structure schematic diagram of an air conditioner of a two-pipe system in the related art;

[0038] Figure 2 A circuit connection structure schematic diagram of an air conditioner provided in the embodiments of the present application;

[0039] Figure 3 A circuit connection structure schematic diagram of an air conditioner provided in the embodiments of the present application;

[0040] Figure 4 A circuit connection structure schematic diagram of an air conditioner provided in the embodiments of the present application;

[0041] Figure 5 A start control method schematic diagram of an air conditioner provided in the embodiments of the present application;

[0042] Figure 6 A start control method schematic diagram of an air conditioner provided in the embodiments of the present application;

[0043] Figure 7 A start mode judgment schematic diagram of an air conditioner provided in the embodiments of the present application;

[0044] Figure 8 A start mode judgment schematic diagram of an air conditioner provided in the embodiments of the present application;

[0045] Figure 9A third schematic diagram of a start mode judgment of an air conditioner according to an embodiment of the present application is provided;

[0046] Figure 10 A fourth schematic diagram of a start mode judgment of an air conditioner according to an embodiment of the present application is provided;

[0047] Figure 11 A fifth schematic diagram of a start mode judgment of an air conditioner according to an embodiment of the present application is provided;

[0048] Figure 12 A third schematic diagram of a start control method of an air conditioner according to an embodiment of the present application is provided;

[0049] Figure 13 A fourth schematic diagram of a start control method of an air conditioner according to an embodiment of the present application is provided. DETAILED DESCRIPTION

[0050] In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the following will be combined with the accompanying drawings for the embodiments of the present application to clearly and completely describe the technical solutions of the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application but not all the embodiments. The components of the embodiments of the present application described and shown in the accompanying drawings can be arranged and designed in various different configurations.

[0051] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative labor are within the scope of protection of the present application.

[0052] It should be noted that: similar reference numerals and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

[0053] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship when the product of the present application is usually placed, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third" and the like are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0054] In addition, the terms "horizontal", "vertical", and the like do not mean that the components must be absolutely horizontal or vertical, but can be slightly inclined. For example, "horizontal" only means that it is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0055] In the description of the present application, it should be further pointed out that, unless otherwise explicitly specified and limited, the terms "arrangement", "installation", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0056] In the related art, the air conditioning system unit starts according to a predetermined frequency control scheme, the starting mode is incremental platform fixed, and the pause time is certain. Using this scheme, it takes a long time to reach the full load output of the compressor, it is difficult to achieve fast refrigeration and heating, and the starting control cannot comprehensively determine the starting frequency of the compressor according to the air conditioning state, resulting in that the starting of the air conditioning system cannot cope with various starting conditions, and the reliability of the air conditioning starting control is poor.

[0057] Based on this, the embodiments of the present application provide an air conditioner and a starting control method of the air conditioner, that is, a first temperature detection device is arranged on the outdoor unit to detect the outdoor temperature value of the environment where the outdoor unit is located; a second temperature detection device is arranged at the exhaust port of the compressor to detect the exhaust temperature value of the compressor; a first pressure detection device and a second pressure detection device are arranged at the exhaust port and the suction port of the compressor respectively to detect the exhaust pressure value and the suction pressure value of the compressor; and a memory storing historical operation parameters of the air conditioner is arranged, so that the controller can obtain the current operation parameters (i.e. the exhaust pressure value, the suction pressure value, the outdoor temperature value, etc.) and the historical operation parameters. Further, the controller can match to the starting mode suitable for the current operation parameters and / or the historical operation parameters, and the controller controls the compressor to operate in the starting mode.

[0058] Therefore, the starting control can comprehensively determine the starting frequency of the compressor according to the state of the air conditioner, ensure the reliability of the operation of the air conditioner, and reduce the damage of the compressor caused by the mismatch between the starting frequency of the compressor and the current state of the air conditioning unit.

[0059] In order to facilitate understanding, first, some terms or basic concepts of the technology related to the embodiments of the present application are simply introduced and explained.

[0060] Refrigeration mode: The compressor of the air conditioning system sucks the low-temperature and low-pressure gaseous refrigerant evaporated by the evaporator into the compressor cavity, compresses it into high-temperature and high-pressure gaseous refrigerant, and enters the condenser. The high-temperature and high-pressure gaseous refrigerant is condensed into high-temperature and high-pressure liquid refrigerant in the condenser, and then becomes low-temperature and low-pressure liquid refrigerant after throttling by a throttling element such as a capillary, and enters the evaporator to evaporate, and finally returns to the compressor, thereby completing the entire refrigeration cycle. Among them, the outdoor heat exchanger in the refrigeration mode is used as a condenser, and the indoor heat exchanger is used as an evaporator.

[0061] Oil return operation mode: In the operation of the multi-split system of the air conditioner, part of the lubricating oil of the compressor will be discharged together with the refrigerant gas, into the system condenser, piping, and evaporator. Only this part of the lubricating oil can be smoothly brought back to the compressor, so as to maintain the dynamic balance of the oil in the entire system, otherwise the compressor will be damaged due to lack of oil. The process from the discharge of the lubricating oil to the return to the compressor is called oil return. The oil return mode is set in the main control program of the air conditioner and automatically triggers the oil return mode to operate under certain conditions (for example, the compressor operates for a certain time).

[0062] Defrosting operation mode: This defrosting operation mode is started only when the air conditioner is in a heating condition. In the heating mode, the air conditioner blows cold air, and the temperature of the heat exchanger is several degrees below zero or even dozens of degrees below zero. At this time, the water vapor in the external air will condense on the fins of the outdoor unit and then be frozen into ice blocks (frost). If the frost is not removed, the outdoor unit will be blocked by the ice blocks and cannot dissipate heat. The ice blocks will become thicker and thicker, and finally the refrigerant in the outdoor unit cannot be evaporated, the pressure is too low, the system will jump to low pressure protection, and the air conditioner will stop. The defrosting operation mode automatically triggers the defrosting mode to operate to remove the frost on the outdoor unit when a certain condition is reached (for example, the air conditioner is turned on for a certain time in heating mode).

[0063] Refrigerant: A substance that easily absorbs heat to become a gas and easily releases heat to become a liquid. In the air conditioning system, heat energy is transferred through the evaporation and condensation of the refrigerant to produce a refrigeration effect.

[0064] Superheat: The difference between the actual temperature of the refrigerant at the outlet of the evaporator and the corresponding saturated temperature at this pressure, that is, the difference between the outlet temperature of the evaporator and the evaporation temperature.

[0065] Expansion valve: composed of a valve body and a coil, used for throttling and pressure reduction and flow regulation. The expansion valve in the air conditioning system can make the liquid refrigerant at medium temperature and high pressure become low-temperature and low-pressure wet steam through throttling, and then the refrigerant absorbs heat in the evaporator to achieve a refrigeration effect, and the valve flow is controlled by the change of the superheat at the outlet of the evaporator.

[0066] The air conditioning system in this application performs a refrigeration cycle of an air conditioning system by using a compressor, a condenser, an electronic expansion valve, an evaporator, and a four-way valve as a refrigerant circulation loop. The refrigeration cycle includes a series of processes involving compression, condensation, expansion, and evaporation, and supplies refrigerant to air that has been adjusted and heat-exchanged.

[0067] The compressor compresses refrigerant gas in a high-temperature and high-pressure state and discharges the compressed refrigerant gas. The discharged refrigerant gas flows into the condenser. The condenser condenses the compressed refrigerant into a liquid phase, and heat is released to the surrounding environment through the condensation process.

[0068] The electronic expansion valve expands the liquid-phase refrigerant in a high-temperature and high-pressure state condensed in the condenser into a low-pressure liquid-phase refrigerant. The evaporator evaporates the refrigerant expanded in the electronic expansion valve and returns the refrigerant gas in a low-temperature and low-pressure state to the compressor. The evaporator can achieve a refrigeration effect by heat-exchanging with a material to be cooled using latent heat of evaporation of the refrigerant. Throughout the cycle, the air conditioning system can adjust the temperature of an indoor space.

[0069] The outdoor unit of the air conditioning system refers to the part of the refrigeration cycle including the compressor and the outdoor heat exchanger, the indoor unit of the air conditioning system includes the indoor heat exchanger, and the expansion valve can be provided in the indoor unit or the outdoor unit.

[0070] The indoor heat exchanger and the outdoor heat exchanger are used as a condenser or an evaporator. When the indoor heat exchanger is used as a condenser, the air conditioning system is used as a heater in a heating mode, and when the indoor heat exchanger is used as an evaporator, the air conditioning system is used as a cooler in a cooling mode.

[0071] Before introducing embodiments of the present application, a related art air conditioner is briefly introduced. An exemplary, Figure 1 A structure diagram of an air conditioner of two-pipe system in the related art is shown, as Figure 1 As shown in the figure, the air conditioner 1000 generally includes: an outdoor unit 110 and a plurality of indoor units 120 connected with the outdoor unit 110; wherein the plurality of indoor units 120 are connected in parallel, and the outdoor unit 110 is connected with the plurality of indoor units 120 connected in parallel through two connection ports (i.e. a first connection port 131 and a second connection port 132).

[0072] The outdoor unit 110 includes: a gas-liquid separator 111, a compressor 112, an oil separator 113, a plurality of parallel refrigerant heat exchange pipelines, and a three-way valve 117 connected in sequence. Each refrigerant heat exchange pipeline between the oil separator 113 and the three-way valve 117 is connected in sequence with a four-way valve 114, an outdoor heat exchanger 115, and an outdoor unit electronic expansion valve 116.

[0073] The indoor unit 120 includes an indoor heat exchanger 121 and an indoor unit electronic expansion valve 122. One end of the indoor heat exchanger 121 is connected to one end of the indoor unit electronic expansion valve 122, and the other end of the indoor heat exchanger 121 is connected to one end of multiple parallel refrigerant heat exchange pipelines via a connection port. Figure 1 The middle end is where the four-way valve 114 is located, and the other end of the indoor unit's electronic expansion valve 122 is connected to the other end of multiple parallel refrigerant heat exchange pipes through another connection port. Figure 1 (The middle part is where the three-way valve 117 is located). The refrigerant supply pipeline in the air conditioner 1000 during cooling operation is the same as the refrigerant supply pipeline during heating operation.

[0074] When the air conditioner 1000 is in heating mode, the high-temperature, high-pressure gaseous refrigerant discharged from the compressor 112 flows to the oil separator 113. The high-temperature, high-pressure gaseous refrigerant flows out of the oil separator 113 and sequentially passes through a one-way valve, a four-way valve 114, a first connection port 131, an indoor heat exchanger 121, and an indoor unit electronic expansion valve 122. The high-temperature, high-pressure gaseous refrigerant condenses into a medium-temperature, high-pressure subcooled liquid refrigerant after passing through the indoor heat exchanger 121. This medium-temperature, high-pressure subcooled liquid refrigerant flows out from the indoor unit electronic expansion valve 122, becoming a medium-temperature, medium-pressure liquid refrigerant. The medium-pressure liquid refrigerant passes through the second connection port 132 in sequence, and then is throttled by the outdoor unit's electronic expansion valve 116 to become a low-temperature, low-pressure liquid refrigerant. This low-temperature, low-pressure liquid refrigerant then passes through the outdoor heat exchanger 115, where it evaporates into a low-temperature, low-pressure gaseous refrigerant. This low-temperature, low-pressure gaseous refrigerant finally flows through the four-way valve 114 into the gas-liquid separator 111. The low-temperature, low-pressure gaseous refrigerant flowing out of the gas-liquid separator 111 enters the compressor 112 suction port, thus completing the refrigerant cycle during the air conditioner's 1000 heating mode.

[0075] When the air conditioner is in the cooling mode, the high-temperature and high-pressure gaseous refrigerant discharged by the compressor 112 flows to the oil separator 113; the high-temperature and high-pressure gaseous refrigerant flows out of the oil separator 113 in turn through the one-way valve, the four-way valve 114 and the outdoor heat exchanger; the high-temperature and high-pressure gaseous refrigerant is condensed into medium-temperature and high-pressure supercooled liquid refrigerant in the outdoor heat exchanger 115; the medium-temperature and high-pressure supercooled liquid refrigerant passes through the outdoor machine electronic expansion valve 116, the second connecting port 132, the indoor machine electronic expansion valve 122 and the indoor heat exchanger 121 in turn; the medium-temperature and high-pressure supercooled liquid refrigerant is throttled into low-temperature and low-pressure refrigerant by passing through the indoor machine electronic expansion valve 122, and the low-temperature and low-pressure refrigerant evaporates into low-temperature and low-pressure gaseous refrigerant when passing through the indoor heat exchanger 121, which flows into the gas-liquid separator 111 in turn through the first connecting port 131 and the four-way valve 114, and the low-temperature and low-pressure gaseous refrigerant flowing out of the gas-liquid separator 111 enters the suction port of the compressor 112, thus completing the circulation of the refrigerant in the cooling mode of the air conditioner 1000.

[0076] It should be understood that the air conditioner 1000 described above is only an example and is not a specific limitation of the embodiments of the present application. The air conditioner 1000 of the embodiments of the present application can be a two-pipe air conditioner as described above, and can also be a three-pipe air conditioner, which is not limited by the present application.

[0077] Figure 2 The circuit connection structure of the air conditioner provided by the embodiments of the present application is shown in the schematic diagram as shown in Figure 2 The outdoor unit of the air conditioner provided by the embodiments of the present application can include: a compressor 112, a first temperature detection device 141, a second temperature detection device 142, a first pressure detection device 151, a second pressure detection device 152, a memory 160 and a controller 170. The controller 170 is electrically connected with the compressor 112, the first temperature detection device 141, the second temperature detection device 142, the first pressure detection device 151, the second pressure detection device 152 and the memory 160.

[0078] The first temperature detection device 141 is arranged on the outdoor unit 110 and is used to detect the outdoor temperature value of the environment where the outdoor unit 110 is located. Optionally, the first temperature detection device 141 can be a temperature detector. Optionally, the first temperature detection device 141 can also be a temperature sensor, etc., which is not limited by the present application.

[0079] The second temperature detection device 142 is arranged at the exhaust port and is used to detect the exhaust temperature value of the compressor 112. Similarly, the second temperature detection device 142 can also be a temperature detector or a temperature sensor, etc.

[0080] In addition, the compressor 112 comprises an exhaust port and a suction port. The first pressure detection device 151 is arranged at the exhaust port and is configured to detect an exhaust pressure value of the compressor 112. The second pressure detection device 152 is arranged at the suction port and is configured to detect a suction pressure value of the compressor 112.

[0081] It can be understood that the first pressure detection device 151 and the second pressure detection device 152 can be pressure sensors or pressure testers, and the application does not make any limitation in this regard.

[0082] In addition, the memory 160 is arranged in the shell of the air conditioner 1000, and is configured to store historical operation parameters of the air conditioner 1000. The historical operation parameters can include historical mode switching of the air conditioner 1000, last stop running time (stop time) of the air conditioner 1000, and the like.

[0083] The memory 160 can be a module with a storage function, and the memory 160 stores the historical operation parameter information of the air conditioner 1000.

[0084] In a possible implementation, the controller 170 itself has a storage function, and the memory 160 can include a storage unit. That is, the memory 160 is part of the controller 170.

[0085] In another possible implementation, the controller 170 does not have a storage function, and the memory 160 is independent of the controller 170.

[0086] In the embodiments of the application, the controller 170 refers to a device that can generate an operation control signal according to an instruction operation code and a timing signal, and instruct the air conditioner 1000 to execute a control instruction. For example, the controller 170 can be a central processing unit (CPU), a general processor network processor (NP), a digital signal processing (DSP), a programmable logic device (PLD), a microprocessor, a microcontroller 170, or any combination thereof. The controller 170 can also be other devices with processing functions, such as a circuit, a device, or a software module, and the embodiments of the application do not make any limitation in this regard.

[0087] In some embodiments, the controller 170 can be a microcontroller unit (MCU). The MCU, also known as a single chip microcomputer or single-chip microcontroller, is a microcontroller that has been scaled down substantially to achieve a small form factor. It is a system on a chip that has a processor core, memory, and programmable input / output peripherals built into one chip. It can be used in applications such as consumer electronics, embedded systems, and automotive systems.

[0088] In addition, the controller 170 can be used to control the operation of each component in the multi-split air conditioning system to enable each component of the multi-split air conditioning system to perform the predetermined functions of the multi-split air conditioning system.

[0089] For example, the controller 170 can execute the following control instructions: in response to receiving a start-up signal, obtaining the current operating parameters and historical operating parameters of the compressor 112, the current operating parameters including at least one of the following: discharge pressure value, suction pressure value, discharge temperature value, and outdoor temperature value; determining the start-up mode of the compressor 112 according to the current operating parameters and / or historical operating parameters; and controlling the compressor 112 to operate in the start-up mode.

[0090] The air conditioner 1000 provided by the embodiment of the present application comprises: an outdoor unit having a compressor 112, the compressor 112 comprising: an exhaust port and a suction port. The outdoor unit further comprises: a first temperature detection device 141 for detecting the environment of the outdoor unit, a second temperature detection device 142 for detecting the exhaust temperature value of the compressor 112, a first pressure detection device 151 for detecting the exhaust pressure value of the compressor 112, a second pressure detection device 152 for detecting the suction pressure value of the compressor 112, a memory 160 and a controller 170, the controller 170 being configured to: in response to receiving a start-up signal, acquire the current running parameters and the historical running parameters of the compressor 112, the current running parameters comprising at least one of the following: the exhaust pressure value, the suction pressure value, the exhaust temperature value and the outdoor temperature value; determine the start-up mode of the compressor 112 according to the current running parameters and / or the historical running parameters; control the compressor 112 to run in the start-up mode. By acquiring the current running parameters and the historical running parameters of the compressor 112 (for example, the historical mode adjustment information of the air conditioner 1000 and the shutdown time of the compressor 112 last time), the current rotation of the compressor 112 and the running environment of the compressor 112 are determined, so as to further determine the start-up mode of the compressor 112, and the compressor 112 is started in the start-up mode. In this way, the air conditioner 1000 can determine the start-up mode of the compressor 112 according to the state of the air conditioner unit, so as to ensure the reliability of the operation of the air conditioner 1000 and reduce the damage of the compressor 112 caused by the mismatch between the start-up frequency of the compressor and the current state of the air conditioner unit.

[0091] In some embodiments, the memory further stores a correspondence table of the start-up mode and the start-up frequency of the compressor 112; before the controller 170 controls the compressor 112 to run in the start-up mode, the controller 170 is further configured to: the controller 170 acquires the start-up frequency corresponding to the start-up mode through the memory 160; and the controller 170 controls the compressor 112 to run in the start-up mode, comprising: the controller 170 controls the compressor 112 to run in the start-up frequency.

[0092] In this way, the controller 170 can acquire the correspondence table of the start-up mode and the start-up frequency from the memory 160, so as to determine the start-up frequency of the current start-up mode, and control the compressor 112 to start in the start-up frequency, thereby reducing the damage of the compressor 112 caused by the mismatch between the start-up frequency of the compressor and the current state of the air conditioner unit.

[0093] In some embodiments, the indoor unit of the air conditioner 1000 can comprise: an indoor fan capable of generating airflow through the indoor heat exchanger, so as to exchange heat between the indoor heat exchanger and indoor air, and improve the refrigeration or heating effect of the air conditioner 1000.

[0094] In some embodiments, asFigure 3 As shown, the indoor unit of the air conditioner 1000 can include a remote controller 180, which is electrically connected with the controller 170 and has a function of communicating with the controller 170, for example, using infrared rays or other communication modes. The user can control the air conditioner 1000 through the remote controller 180 to realize the interaction between the user and the air conditioner 1000.

[0095] In some embodiments, as shown, Figure 4 As shown, the air conditioner 1000 can also include a communicator 190, which is electrically connected with the controller 170 and is used to establish a communication connection with a server. The communicator 190 can include a radio frequency (RF) module, a cellular module, a wireless fidelity (WIFI) module, and a GPS module, etc. Taking the RF module as an example, the RF module can be used for receiving and sending signals, in particular, sending the received information to the controller 170 for processing; in addition, sending the signals generated by the controller 170. Generally, the RF circuit can include but is not limited to an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier (LNA), a duplexer, etc.

[0096] In some embodiments, the air conditioner 1000 can also send its running data to the server through the communicator 190, so that the server calculates the running parameters of each component of the multi-connected air conditioning system in the working process according to the data of the air conditioner 1000, and then sends the calculated running parameters to the air conditioner 1000. Then the controller 170 controls each component in the air conditioner 1000 to work according to the running parameters calculated by the server.

[0097] Among them, the server can be a separate server, or it can also be a server cluster composed of multiple servers. In some embodiments, the server cluster can also be a distributed cluster. In some embodiments, the service area can also be a cloud server, and the specific type of the server is not limited in the embodiments of the present application.

[0098] In some embodiments, the memory 160 can be used to store software programs and data. The controller 170 performs various functions of the air conditioner 1000 and data processing by running the software programs or data stored in the memory 160. The memory 160 can include a high-speed random access memory 160, and can also include a non-volatile memory 160, such as at least one magnetic disk storage device 160, a flash memory device, or other volatile solid-state memory 160. The memory 160 stores an operating system that enables the air conditioner 1000 to operate. In this application, the memory 160 can store an operating system and various application programs, and can also store code for performing a method of starting control of an air conditioner 1000 provided by the embodiments of the application.

[0099] The embodiments provided by the application will be described in detail below with reference to the accompanying drawings.

[0100] As shown in the Figure 5 application, the embodiments of the application provide a starting control method of an air conditioner, which can be applied to the controller in the air conditioner described above. It can be understood that the starting control is a transition control process between the starting of the air conditioner and the normal operation. That is, before the air conditioner needs to operate in a heating mode or a cooling mode, the air conditioner enters a starting control mode stage after starting, so that the air conditioner can smoothly reach the normal heating or cooling mode. The starting control method of the air conditioner can include the following steps:

[0101] S101, the controller acquires the current operating parameters and historical operating parameters of the compressor in response to receiving a start-up signal.

[0102] The current operating parameters include at least one of the following: a discharge pressure value, a suction pressure value, a discharge temperature value, and an outdoor temperature value.

[0103] In addition, the start-up signal can be triggered by the user. That is, in a possible implementation, the user controls the air conditioner to start, and the controller receives the start-up signal.

[0104] Alternatively, the user can control the air conditioner to start by operating a remote controller. Alternatively, the user can also control the air conditioner to start by touching the display panel of the air conditioner. Alternatively, the user can also establish a communication connection with the air conditioner through a mobile device to control the air conditioner to start, which is not limited in the application.

[0105] The start-up signal can also be automatically triggered during the operation of the air conditioner. That is, in another possible implementation, the air conditioner automatically restarts in response to a predetermined condition during the operation of the air conditioner, so that the controller receives the start-up signal.

[0106] Optionally, the controller receives the start-up signal after the air conditioner has been operating in the defrost mode for a predetermined time, and the controller obtains the current operating parameters and the historical operating parameters of the compressor.

[0107] Optionally, the controller receives the start-up signal after the air conditioner has been operating in the defrost mode for a predetermined time, and the controller obtains the current operating parameters and the historical operating parameters of the compressor.

[0108] In addition, the controller can obtain the current operating parameters of the compressor through the first temperature detection device, the second temperature detection device, the first pressure sensor and the second pressure sensor. The controller can obtain the historical operating parameter information of the air conditioner through the memory.

[0109] In addition, the historical operating parameter information can include the historical operating mode switching of the air conditioner, for example, switching of the air conditioner from the cooling mode to the heating mode, switching of the air conditioner from the heating mode to the defrost mode, switching of the air conditioner from the cooling mode to the oil return control mode, etc.

[0110] The historical operating parameter information can also include the last stop time of the compressor. That is, the last stop time of the compressor and the historical operating mode switching of the air conditioner can be stored in the memory during the operation of the air conditioner, to facilitate the subsequent controller to obtain.

[0111] It can be understood that the air conditioner can generally operate in the cooling mode or the heating mode, and the start-up mode of the air conditioner can not be the same when the air conditioner is in the same state before the air conditioner operates in the cooling mode and the heating mode. That is, the current operating parameters and / or the historical operating parameters are the same, and the start-up mode of the air conditioner in the heating mode and the cooling mode can not be the same.

[0112] Therefore, in some embodiments, as shown in Figure 6 The step S101 can further include:

[0113] S101a, the controller judges whether the executed operating mode is the cooling mode in response to obtaining the start-up signal.

[0114] It can be understood that the determination of the operating mode is usually transmitted to the controller together with the start-up signal. The determination of the operating mode can be triggered by the user or automatically triggered during the operation of the air conditioner, and the present application will not be repeated here.

[0115] S101b, if yes, the start-up control in the cooling mode is entered;

[0116] S101c, if no, the start-up control in the heating mode is entered;

[0117] It can be understood that the start control of the refrigeration mode and the start control of the heating mode can be different.

[0118] S101d, acquiring the current operating parameter and the historical operating parameter of the compressor.

[0119] The S101d can be located after the step S101b and the S101c respectively.

[0120] S102, the controller determines the start mode of the compressor according to the current operating parameter and / or the historical operating parameter.

[0121] The start mode can include: sleep start, cold start, oil return start, defrosting start and hot start.

[0122] For the convenience of understanding, the following describes the state of the air conditioner and the start frequency of the air conditioner when the sleep start, the cold start, the oil return start, the defrosting start and the hot start provided by the present application are described one by one.

[0123] The sleep start is that the compressor has not been running for a long time, the discharge temperature value of the compressor is basically the same as the outdoor temperature value, and the refrigerant in the circulating system of the air conditioner has been balanced. Since the parameters in the circulating system are unstable at the initial stage of the start of the compressor, and the discharge superheat degree has not been established, in order to ensure the reliable operation of the compressor, the compressor can be operated at a first operating frequency H1, which is:

[0124] H1=K×H zmax ;

[0125] H zmax is the maximum frequency at which the compressor can operate, and K is a constant. The selection of the K value is related to the determined value of the compressor unit characteristics (such as the oil viscosity of the compressor and the oil surface of the compressor). For example, the K value can be 0.5-0.8.

[0126] The cold start is that the compressor is closed for a period of time, and the discharge superheat degree of the compressor remains in the established state. Therefore, in order to ensure that the indoor temperature reaches the set temperature of the user as soon as possible, the compressor can be operated in a full frequency mode. That is, the compressor is operated at a second operating frequency H2, which is:

[0127] H2=H zmax ;

[0128] The oil return start is a start mode set for the compressor to enter the oil return operation mode. In the oil return start mode, the compressor can be operated at a third operating frequency H3, which can be:

[0129]

[0130] Wherein, L is a constant, HP is the total capacity of the outdoor unit, that is, the HP is the refrigerating capacity (in tons) of the air conditioner, and M is the number of compressors in the unit.

[0131] The defrost start is the start of the air conditioner after the end of the defrost operation mode. In the defrost start mode, the compressor can run at a fourth operating frequency H4, which can be:

[0132] H4 = H zdef ;

[0133] H zdef ≥ 50% x H zmax ;

[0134] It can be understood that the specific value of the fourth operating frequency H4 is related to the defrost time of the air conditioner, the unit tonnage and the parameters of the unit, and the fourth operating frequency H4 can determine the specific value according to the actual situation.

[0135] The hot start is the start mode of the air conditioner when the above sleep start, cold start, oil return start and defrost start conditions are not met. In the hot start mode, the compressor runs at a fifth operating frequency H5, which is:

[0136] H5 = H zstart ;

[0137] H zmin ≤ H zstart ≤ K x H zmax ;

[0138] Wherein, H zmin is the minimum frequency at which the compressor can operate.

[0139] In some embodiments, H5 can be equal to A x heating THERMO ON HP + B x cooling THERMO ON HP. Wherein, A and B are parameters related to the displacement of the compressor, the outdoor temperature and the parameters of the unit, heating THERMO ON HP refers to the tonnage of the indoor unit started by the air conditioner in heating mode, and cooling THERMO ON HP refers to the tonnage of the indoor unit started by the air conditioner in cooling mode.

[0140] It can be understood that the five start modes described above (i.e. sleep start, cold start, oil return start, defrost start and hot start) have different start trigger conditions. When the current operating parameters and historical operating parameters meet the corresponding trigger conditions, the controller controls the compressor to start in the corresponding start mode.

[0141] For convenience of description, the five start modes are described one by one as follows.

[0142] Firstly, the sleep start is explained. In a possible implementation, the controller determines the start mode according to the current operation parameter and / or the historical operation parameter, such as Figure 7 As shown, the sleep start can include:

[0143] S1021a, the controller obtains the last stop operation time of the compressor according to the historical operation parameter, and determines the stop time length of the compressor.

[0144] That is, the controller can obtain the last stop operation time of the compressor from the memory, compare the last stop operation time point of the compressor with the current time point, and thus determine the stop time length of the compressor.

[0145] S1021b, the controller determines whether the stop time length of the compressor is greater than a first preset time length, and whether the current discharge pressure of the compressor minus the current suction pressure of the compressor is less than a first threshold.

[0146] That is, the conditions for the sleep start are:

[0147] Condition 1, whether the stop time length of the compressor is greater than the first preset time length;

[0148] Condition 2, whether the current discharge pressure of the compressor minus the current suction pressure of the compressor is less than the first threshold.

[0149] For example, the first preset time length can be 1h, and when the stop time length of the compressor is greater than 1h, i.e. 1.5h, 2h, etc., condition 1 is satisfied.

[0150] For example, the first threshold of the compressor can be 0.4MPa, and when the current discharge pressure of the compressor minus the current suction pressure of the compressor is 0.3MPa, 0.2MPa, etc., condition 2 is satisfied.

[0151] The controller can first determine condition 1, or first determine condition 2, or simultaneously determine condition 1 and condition 2 when determining whether the state of the air conditioner satisfies the conditions for the sleep start, which is not limited in the present application.

[0152] S1021c, if yes, the start mode is determined as the sleep start.

[0153] That is, when conditions 1 and 2 are both satisfied, the start mode is determined as the sleep start mode. When any one or both of conditions 1 and 2 are not satisfied, the sleep start mode cannot be entered.

[0154] In another possible implementation, the controller determines the start mode according to the current operation parameter and / or the historical operation parameter, such as Figure 8The method can further include:

[0155] S1022a, the controller determines whether the start mode meets the cold start according to the exhaust temperature value of the compressor, the outdoor temperature value, the suction pressure of the compressor and the exhaust pressure of the compressor.

[0156] The controller can obtain the exhaust temperature value of the compressor from the second temperature detection device, obtain the outdoor temperature value from the first temperature detection device, obtain the exhaust pressure of the compressor from the first pressure detection device, and obtain the suction pressure of the compressor from the second pressure detection device.

[0157] For example, the conditions under which the controller controls the compressor to enter the cold start can be shown in Table 1 as follows:

[0158] Table 1

[0159]

[0160]

[0161] Wherein, Ta is the outdoor temperature value, Td is the exhaust temperature value of the compressor, Pd is the exhaust pressure value of the compressor, Ps is the suction pressure value of the compressor, and ΔP = Pd-Ps.

[0162] If the exhaust temperature value of the compressor, the outdoor temperature value, the suction pressure of the compressor and the exhaust pressure of the compressor meet any one of conditions 3, 4 and 5, the controller controls the compressor to enter the cold start.

[0163] For example, in determining whether the cold start is met, it can be first determined whether condition 3 is met, if it is met, the cold start is entered; if it is not met, it is then determined whether condition 4 is met, if it is met, the cold start is entered, if it is not met, it is then determined whether condition 5 is met, if it is met, the cold start is entered.

[0164] S1022b, if yes, it is determined that the start mode is the cold start.

[0165] That is, when the exhaust temperature value, the outdoor temperature value, the suction pressure of the compressor and the exhaust pressure of the compressor meet any one of conditions 3, 4 and 5, the cold start mode can be entered.

[0166] In another possible implementation, the controller determines the start mode according to the current operating parameters and / or the historical operating parameters, such as Figure 9 The method can further include:

[0167] S1023a, the controller determines the last operating mode of the air conditioner according to the historical operating parameters. That is, the historical operating mode information of the air conditioner can be stored in the memory, and the controller obtains the last operating mode of the air conditioner from the memory.

[0168] For example, the last running mode can be a cooling mode, a heating mode, an oil return mode, a defrosting mode, etc.

[0169] S1023b, the controller determines whether the last running mode of the air conditioner is the oil return running mode.

[0170] S1023c, if yes, it is determined that the start mode is the oil return start.

[0171] That is, when the air conditioner triggers the condition of the oil return running mode, the air conditioner enters the oil return running mode, in order to protect the stable operation of the air conditioner, the controller controls the compressor to shut down and restart, and if the last running mode of the air conditioner is the oil return running mode after the restart, the oil return start is triggered.

[0172] In another possible implementation, the controller determines the start mode according to the current running parameter and / or the historical running parameter, for example, Figure 10 As shown in the figure, the method can further include:

[0173] S1024a, the controller determines the last running mode of the air conditioner according to the historical running parameter;

[0174] S1024b, the controller determines whether the last running mode of the air conditioner is the defrosting running mode;

[0175] S1024c, if yes, it is determined that the start mode is the defrosting start.

[0176] The determination of the defrosting start can refer to the description of the determination of the oil return start, which will not be described herein.

[0177] It can be understood that the defrosting mode is only run when the air conditioner is in the heating mode, so in the cooling mode, the defrosting start does not exist.

[0178] In a possible implementation, the controller determines the start mode according to the current running parameter and / or the historical running parameter, for example, Figure 11 As shown in the figure, the method can further include:

[0179] S1025a, the controller determines whether the start mode is one of the sleep-in start, the cold start, the oil return start and the defrosting start according to the current running parameter and / or the historical running parameter;

[0180] S1025b, if yes, it is determined that the start mode is the sleep-in start, the cold start, the oil return start or the defrosting start.

[0181] For example, if the current operating parameter and / or the historical operating parameter meets the condition of the sleep start, the start mode is the sleep start; if the current operating parameter and / or the historical operating parameter meets the condition of the cold start, the start mode is the cold start; if the current operating parameter and / or the historical operating parameter meets the condition of the oil return start, the start mode is the oil return start; if the current operating parameter and / or the historical operating parameter meets the condition of the defrost start, the start mode is the defrost start.

[0182] S1025c, if none, determining that the start mode is the hot start.

[0183] That is, if none of the current operating parameter and / or the historical operating parameter meets the condition of the sleep start, the cold start, the oil return start and the defrost start, it is determined that the start mode is the hot start.

[0184] For example, Table 2 shows the determination conditions of the five start modes provided by the embodiments of the present application, as shown in Table 2 below.

[0185] Table 2

[0186]

[0187]

[0188] It can be understood that the above Table 2 is only an example for illustration, and is not a specific limitation on the determination of the five start modes of the present application.

[0189] In some embodiments, the start mode is divided into the above-mentioned five start modes of the sleep start, the cold start, the oil return start, the defrost start and the hot start, and the determination of the five start modes is set with priority, that is, the determination of one of the start modes (for example, the sleep start, the cold start, the oil return start or the defrost start) is taken as the first priority determination, if it does not meet, another mode is taken as the second priority determination, until none of the sleep start, the cold start, the oil return start and the defrost start meets, and it is determined that the start mode is the hot start.

[0190] For example, Figure 12 Fig. 1 shows a start control schematic diagram of an air conditioner provided by the embodiments of the present application, as shown in Figure 12 The first priority determination is the sleep start, the second priority determination is the cold start, the third priority determination is the oil return start, and the fourth priority determination is the defrost start.

[0191] S103, the controller controls the compressor to operate in the determined start mode.

[0192] That is, when the controller controls the compressor to operate in the determined start mode, for example, the current operating parameter and / or the historical operating parameter meets the cold start, the controller controls the compressor to operate in the cold start.

[0193] As Figure 13 shown, in some embodiments, before step S103, the method further comprises:

[0194] S102a, the controller obtains the starting frequency corresponding to the starting mode through the memory.

[0195] The memory stores a correspondence table of starting mode and starting frequency. For example, Table 3 shows the correspondence table of starting mode and starting frequency provided by the embodiments of the present application, as shown in Table 3 below.

[0196] Table 3

[0197]

[0198]

[0199] The values of the starting frequencies H1, H2, H3, H4, H5 can refer to the description in S102 above, which will not be repeated here.

[0200] In addition, step S103, the controller controls the compressor to run in the starting mode, which can include:

[0201] S103a, the controller controls the compressor to run at the starting frequency.

[0202] That is, for example, if the controller determines that the starting mode of the compressor is sleep-in starting according to the current operating parameters and / or historical operating parameters, the controller controls the compressor to start at the first operating frequency H1.

[0203] It can be seen that the above mainly introduces the scheme provided by the embodiments of the present application from the perspective of the method. In order to realize the above functions, the embodiments of the present application provide corresponding hardware structures and / or software modules for executing various functions. Those skilled in the art should easily realize that the modules and algorithm steps of the examples described in combination with the embodiments disclosed herein can be realized in the form of hardware or a combination of hardware and computer software. Whether a certain function is executed in hardware or computer software driven hardware depends on the specific application and design constraints of the technical solution. Professional technicians can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of the present application.

[0204] The embodiments of the present application can divide the controller into functional modules according to the above method examples. For example, each functional module can be divided according to each function, or two or more functions can be integrated into one processing module. The integrated module can be realized in the form of hardware or in the form of a software functional module. Optionally, the division of the modules in the embodiments of the present application is illustrative, and is only a logical functional division. In actual implementation, another division manner can be used.

[0205] The embodiments of the present application also provide a computer readable storage medium including computer execution instructions, which, when running on a computer, cause the computer to execute any one of the air conditioner starting control methods provided by the above embodiments.

[0206] The embodiments of the present application also provide a computer program product including computer execution instructions, which, when running on a computer, cause the computer to execute any one of the air conditioner starting control methods provided by the above embodiments.

[0207] In the above embodiments, all or part of the embodiments can be realized by software, hardware, firmware or any combination thereof. When realized by software, all or part of the embodiments can be realized in the form of a computer program product. The computer program product includes one or more computer execution instructions. When the computer execution instructions are loaded and executed on a computer, all or part of the processes or functions according to the embodiments of the present application are generated. The computer can be a general-purpose computer, a special-purpose computer, a computer network or other programmable device. The computer execution instructions can be stored in a computer readable storage medium or transmitted from one computer readable storage medium to another, for example, the computer execution instructions can be transmitted from one website, computer, server or data center to another website, computer, server or data center through a wired (for example, coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (for example, infrared, wireless, microwave, etc.) manner. The computer readable storage medium can be any available medium that can be accessed by a computer or a data storage device including one or more servers, data centers, etc. integrated with the medium. The available medium can be a magnetic medium (for example, a floppy disk, a hard disk, a magnetic tape), an optical medium (for example, a DVD) or a semiconductor medium (for example, a solid state disk (SSD)) and the like.

[0208] Although the application has been described in connection with the embodiments thereof with reference to the various drawings, it will be apparent to those of ordinary skill in the art that variations in the embodiments can be used and that it is not intended to limit the application to the particular form described. From the above discussion and illustrations, one skilled in the art will readily develop variations in the embodiments without departing from the spirit and scope of the application. Accordingly, the application is not limited by the specific examples described herein, but only by the claims that follow, the intent being to cover all modifications and equivalents falling within the spirit and scope of the application. The specification and drawings are, accordingly to be regarded as illustrative rather than restrictive.

[0209] Although the application has been described in connection with the embodiments thereof with reference to the various drawings, it will be apparent to those of ordinary skill in the art that variations in the embodiments can be used and that it is not intended to limit the application to the particular form described. From the above discussion and illustrations, one skilled in the art will readily develop variations in the embodiments without departing from the spirit and scope of the application. Accordingly, the application is not limited by the specific examples described herein, but only by the claims that follow, the intent being to cover all modifications and equivalents falling within the spirit and scope of the application. The specification and drawings are, accordingly to be regarded as illustrative rather than restrictive.

[0210] The above description is only specific embodiments of the present application, but the protection scope of the present application is not limited thereto, and any changes or replacements within the technical scope disclosed by the present application should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. An air conditioner comprising: An outdoor unit with a compressor, the compressor comprising: an exhaust port and a suction port, characterized in that the outdoor unit further comprises: a first temperature detection device arranged on the outdoor unit, configured to detect an outdoor temperature value of an environment in which the outdoor unit is located; a second temperature detection device arranged at the exhaust port, configured to detect an exhaust temperature value of the compressor; a first pressure detection device and a second pressure detection device arranged at the exhaust port and the suction port respectively, configured to detect an exhaust pressure value and a suction pressure value of the compressor respectively; a memory configured to store historical operating parameters of the air conditioner; a controller configured to: in response to receiving a start-up signal, acquire current operating parameters of the compressor and the historical operating parameters, the current operating parameters comprising at least one of the following: the exhaust pressure value, the suction pressure value, the exhaust temperature value and the outdoor temperature value; determine a start-up mode of the compressor according to the current operating parameters and / or the historical operating parameters; control the compressor to operate in the start-up mode; the memory further stores a correspondence table of the start-up mode and a start-up frequency; before the controller controls the compressor to operate in the start-up mode, the controller is further configured to: acquire the start-up frequency corresponding to the start-up mode from the memory; control the compressor to operate in the start-up mode, comprising: controlling the compressor to operate at the start-up frequency.

2. The air conditioner of claim 1, wherein the start-up mode comprises: a sleep start-up, in which the compressor operates at a first operating frequency, the first operating frequency h1 being: H1 = K x H zmax ; The K is a constant, the H zmax is the maximum frequency at which the compressor can operate; a cold start-up, in which the compressor operates at a second operating frequency; the second operating frequency H2 being: H2= H zmax ; an oil return start-up, in which the compressor operates at a third operating frequency, the third operating frequency H3 being: the L is a constant, the HP is the total capacity of the outdoor unit, and the M is the number of compressors in the unit; a defrost start-up, in which the compressor operates at a fourth operating frequency, the fourth operating frequency H4 being: H4 = H zdef ; H zdef ≥ 50% x H zmax ; a hot start-up, in which the compressor operates at a fifth operating frequency, the fifth operating frequency H5 being: H5 = H zstart ; H zmin ≤H zstart ≤K×H zmax ; The H zmin is the minimum frequency at which the compressor can operate.

3. The air conditioner of claim 2, wherein the controller determines the start-up mode according to the current operating parameters and / or the historical operating parameters, comprising: the controller acquires the last stop operating time of the compressor according to the historical operating parameters, and determines the stop duration of the compressor; determines whether the stop duration of the compressor is greater than a first preset duration, and whether the current exhaust pressure of the compressor minus the current suction pressure of the compressor is less than a first threshold value; if yes, the start-up mode is determined to be the sleep start-up.

4. The air conditioner of claim 2, wherein the controller determines the start-up mode according to the current operating parameters and / or the historical operating parameters, comprising: determines whether the start-up mode meets the cold start-up according to the exhaust temperature value of the compressor, the outdoor temperature value, the suction pressure value of the compressor and the exhaust pressure value of the compressor; If yes, it is determined that the start mode is a cold start.

5. The air conditioner of claim 2, wherein The controller determines a start mode according to the current operation parameter and / or the historical operation parameter, including: determining a last operation mode of the air conditioner according to the historical operation parameter; judging whether the last operation mode of the air conditioner is an oil return operation mode; if yes, it is determined that the start mode is the oil return start.

6. The air conditioner of claim 2, wherein The controller determines a start mode according to the current operation parameter and / or the historical operation parameter, including: determining a last operation mode of the air conditioner according to the historical operation parameter; judging whether the last operation mode of the air conditioner is a defrost operation mode; if yes, it is determined that the start mode is the defrost start.

7. The air conditioner of claim 2, wherein The controller determines a start mode according to the current operation parameter and / or the historical operation parameter, including: the controller determines whether the start mode is one of a sleep-in start, a cold start, an oil return start and a defrost start according to the current operation parameter and / or the historical operation parameter; if yes, it is determined that the start mode is the sleep-in start, the cold start, the oil return start or the defrost start; if none of the above, it is determined that the start mode is the hot start.

8. A method for controlling the start of an air conditioner, characterized by comprising the steps of: The method includes: in response to receiving a start signal, acquiring a current operation parameter and a historical operation parameter of a compressor, the current operation parameter including at least one of the following: an exhaust pressure value of the compressor, a suction pressure value of the compressor, an exhaust temperature value of the compressor and an outdoor temperature value; determining a start mode of the compressor according to the current operation parameter and / or the historical operation parameter; controlling the compressor to operate in the start mode; before the control of the compressor to operate in the start mode, The method further includes: acquiring a start frequency corresponding to the start mode; the control of the compressor to operate in the start mode includes: controlling the compressor to operate at the start frequency.

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