Air conditioner, control method thereof and computer storage medium

Abstract

The invention discloses an air conditioner control method, an air conditioner and a computer storage medium, and the control method comprises the steps that a compressor is controlled to reduce the operation frequency according to an energy consumption reduction instruction; acquiring a first temperature parameter of the indoor unit; judging whether the first temperature parameter reaches a limited temperature value or not; according to the condition that the first temperature parameter does not reach the limited temperature value, an indoor unit fan is controlled to reduce the wind gear; ending the control process when the first temperature parameter reaches the limited temperature value; wherein the first temperature parameter comprises any one of the following parameters: the air outlet temperature of the air conditioner, the temperature of the indoor unit heat exchanger and the ambient temperature of the peripheral side of the indoor unit heat exchanger. According to the control method, when the operation frequency of the compressor is reduced, the air gear of the indoor unit fan is reduced, so that the air outlet temperature of the air conditioner is closer to the actual requirement of a user, and the comfort of the user is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of household appliances, and in particular to an air conditioner and a control method thereof, as well as a computer storage medium. Background Art

[0002] This section merely provides background information related to the present disclosure and is not necessarily prior art.

[0003] During the operation of the air conditioner, when it is restricted by external environmental conditions, such as high grid load, high electricity prices, or the air conditioner is involved in the smart building management system, so that the air conditioner receives an instruction to reduce the total power to save energy, the air conditioner often needs to reduce the operating frequency of the compressor based on the need to reduce energy consumption. However, compressor frequency reduction will lead to a reduction in air conditioner output, causing the outlet air temperature to be too high under cooling and too low under heating, which in turn affects user comfort. Summary of the invention

[0004] The purpose of the present invention is to at least solve the problem that the compressor frequency reduction causes the outlet air temperature to be too high or too low, affecting the user's comfort. This purpose is achieved through the following technical solutions:

[0005] The first aspect of the present invention proposes a control method for an air conditioner, the control method comprising: controlling the compressor to reduce the operating frequency according to an energy consumption reduction instruction; obtaining a first temperature parameter of an indoor unit; judging whether the first temperature parameter reaches a limited temperature value; controlling the indoor unit fan to lower the wind speed according to the first temperature parameter not reaching the limited temperature value; and ending the control process according to the first temperature parameter reaching the limited temperature value; wherein the first temperature parameter comprises any one of the following: the air outlet temperature of the air conditioner, the temperature of the indoor unit heat exchanger, and the ambient temperature around the indoor unit heat exchanger.

[0006] According to the control method of the present invention, when the power of the air conditioner is limited due to the influence of high grid load or high electricity price, so that the operating frequency of the compressor is reduced, the wind speed of the indoor unit fan is lowered so that the first temperature parameter of the indoor unit can approach or reach the limited temperature value, so that the air outlet temperature of the air conditioner is closer to the actual needs of the user, thereby improving the user's comfort.

[0007] In addition, the control method according to the present invention may also have the following additional technical features:

[0008] In some embodiments of the present invention, before the step of controlling the compressor to reduce the operating frequency according to the energy consumption reduction instruction, the step also includes: obtaining the total power of the air conditioner operation; determining whether the total power is less than or equal to the indicated power value; executing the step of obtaining the first temperature parameter of the indoor unit based on the total power being less than or equal to the indicated power value; and executing the step of controlling the compressor to reduce the operating frequency based on the total power being greater than the indicated power value.

[0009] In some embodiments of the present invention, before the step of obtaining the total power of the air conditioner, the control method further includes: obtaining the operating mode of the air conditioner; turning off the electric auxiliary heating device according to that the air conditioner is in heating mode, and executing the step of determining whether the total power is less than or equal to the indicated power value.

[0010] In some embodiments of the present invention, the step of controlling the indoor fan to lower the wind speed includes: determining whether the wind speed of the indoor fan is at the lowest speed; controlling the indoor fan to lower by 1 speed based on the wind speed of the indoor fan being not at the lowest speed, executing the step of determining whether the first temperature parameter reaches a limited temperature value; and ending the control process based on the wind speed of the indoor fan being at the lowest speed.

[0011] In some embodiments of the present invention, the step of controlling the compressor to reduce the operating frequency includes: obtaining the operating frequency of the compressor; determining whether the operating frequency is greater than the frequency lower limit value; controlling the compressor to reduce a first frequency value based on the operating frequency according to the operating frequency being greater than the frequency lower limit value; stopping reducing the operating frequency according to the operating frequency being less than or equal to the frequency lower limit value, and executing the step of obtaining the first temperature parameter of the indoor unit.

[0012] In some embodiments of the present invention, the outdoor fan is controlled to lower the wind speed according to the first temperature parameter not reaching the limited temperature value; wherein the gear of the outdoor fan is positively correlated with the operating frequency.

[0013] In some embodiments of the present invention, the first temperature parameter not reaching the limited temperature value includes: in cooling mode, the first temperature parameter is greater than the first limited temperature value; in heating mode, the first temperature parameter is less than the second limited temperature value; the first temperature parameter reaching the limited temperature value includes: in cooling mode, the first temperature parameter is less than or equal to the first limited temperature value; in heating mode, the first temperature parameter is greater than or equal to the second limited temperature value.

[0014] In some embodiments of the present invention, the control method further includes: reducing the opening area of ​​the air outlet according to the first temperature parameter not reaching the limited temperature value.

[0015] According to a second aspect of the present invention, an air conditioner is further proposed, comprising: a compressor, an indoor fan, an outdoor fan, an electric auxiliary heating device, a temperature sensor and a control device; the temperature sensor is arranged on the indoor heat exchanger and is used to detect a first temperature parameter of the indoor unit, the control device is electrically connected to the compressor, the indoor fan, the outdoor fan, the electric auxiliary heating device and the temperature sensor, and the control device is used to control the operation of the air conditioner according to the control method of the air conditioner described in the technical solution of the first aspect.

[0016] According to a third aspect of the present invention, a computer storage medium is further proposed, on which computer readable instructions are stored. When the computer readable instructions are executed by one or more processors, the one or more processors execute a method for controlling an air conditioner as described in any one of the technical solutions of the first aspect. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present invention. Moreover, the same reference numerals are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0018] Figure 1 A schematic diagram schematically shows a flow chart of a method for controlling an air conditioner according to some embodiments of the present invention;

[0019] Figure 2 A schematic diagram schematically shows a flow chart of a method for controlling an air conditioner according to some embodiments of the present invention;

[0020] Figure 3 A schematic diagram schematically shows a flow chart of a method for controlling an air conditioner according to some embodiments of the present invention;

[0021] Figure 4 A schematic diagram schematically shows a flow chart of a method for controlling an air conditioner according to some embodiments of the present invention;

[0022] Figure 5 A schematic diagram schematically shows a flow chart of a method for controlling an air conditioner according to some embodiments of the present invention;

[0023] Figure 6 A schematic diagram schematically shows a flow chart of a method for controlling an air conditioner according to some embodiments of the present invention;

[0024] Figure 7 A schematic diagram schematically shows a flow chart of a method for controlling an air conditioner according to some embodiments of the present invention;

[0025] Figure 8 A block diagram schematically illustrates the structure of an air conditioner according to some embodiments of the present invention.

[0026] The reference numerals are as follows:

[0027] 10. Compressor; 20. Indoor fan; 30. Outdoor fan; 40. Electric auxiliary heating device; 50. Temperature sensor; 60. Control device; 61. Memory; 62. Processor. DETAILED DESCRIPTION

[0028] The exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided in order to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0029] It should be understood that the terms used herein are only for the purpose of describing specific example embodiments and are not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms "one", "an" and "said" as used herein may also be meant to include plural forms. The terms "include", "comprise", "contain", and "have" are inclusive, and therefore specify the existence of stated features, steps, operations, elements and / or parts, but do not exclude the existence or addition of one or more other features, steps, operations, elements, parts, and / or combinations thereof. The method steps, processes, and operations described herein are not interpreted as necessarily requiring them to be performed in the specific order described or illustrated, unless the execution order is clearly indicated. It should also be understood that additional or alternative steps may be used.

[0030] Although the terms first, second, third, etc. can be used in the text to describe multiple elements, components, regions, layers and / or sections, these elements, components, regions, layers and / or sections should not be limited by these terms. These terms can only be used to distinguish an element, component, region, layer or section from another region, layer or section. Unless the context clearly indicates, terms such as "first", "second" and other numerical terms do not imply order or sequence when used in the text. Therefore, the first element, component, region, layer or section discussed below can be referred to as the second element, component, region, layer or section without departing from the teaching of the example embodiments.

[0031] For ease of description, spatial relative terms may be used herein to describe the relationship of one element or feature relative to another element or feature as shown in the figure, such as "inside", "outside", "inner side", "outer side", "below", "below", "above", "above", etc. Such spatial relative terms are intended to include different orientations of the device in use or operation in addition to the orientation depicted in the figure. For example, if the device in the figure is turned over, then the elements described as "below other elements or features" or "below other elements or features" will subsequently be oriented as "above other elements or features" or "above other elements or features". Therefore, the example term "below..." can include both upper and lower orientations. The device can be oriented otherwise (rotated 90 degrees or in other directions) and the spatial relative descriptors used in the text are interpreted accordingly.

[0032] like Figure 1 As shown, according to an embodiment of the present invention, a control method for an air conditioner is proposed, and the control method comprises the following steps:

[0033] Step S101: controlling the compressor to reduce the operating frequency according to the energy consumption reduction instruction;

[0034] Step S102: obtaining a first temperature parameter of the indoor unit;

[0035] Step S103: determine whether the first temperature parameter reaches a limited temperature value, if yes, end the control process, if no, execute step S104;

[0036] Step S104: Control the indoor fan to lower the wind speed.

[0037] In this embodiment, the energy consumption reduction instruction refers to an instruction to reduce the total operating power of the air conditioner. The energy consumption reduction instruction can be an instruction actively issued by the processor in the air conditioner based on external conditions. For example, the intelligent air conditioner is based on the electricity price information of the power grid. When the electricity price is at its peak, in order to reduce the cost of use, it actively lowers the total operating power of the air conditioner and reduces power consumption.

[0038] Alternatively, the energy consumption reduction instruction can also be an instruction issued by an external device to the air conditioner. For example, the air conditioner is connected to a smart grid system. The smart grid system has a high-performance power control device with a built-in digital computer, which is connected to each other through a network from the power generation equipment to the terminal power equipment (such as the air conditioner). When the load on the power grid is high during peak power consumption, the power control device issues energy reduction instructions to high-power consumption equipment such as air conditioners to improve the balance between power supply and demand in the power grid, thereby optimizing power distribution, preventing power outages, and reducing costs.

[0039] Alternatively, in the air conditioner of the smart building system, the air conditioner receives power allocation from the smart building system. When the electricity price is at a peak or the power supply load in the smart building is large, an energy consumption reduction instruction is sent to the air conditioner through the smart building system.

[0040] In step S103 to step S104, since the compressor is the core component of the air conditioning heating, the energy consumption of the compressor accounts for most of the total energy consumption of the air conditioning. Therefore, reducing the operating frequency of the compressor can quickly reduce the total operating power of the air conditioner.

[0041] It should be noted that when the operating frequency of the compressor decreases, the cooling or heat output capacity of the air conditioner decreases accordingly. For example, in cooling mode, the evaporation temperature of the indoor heat exchanger is higher than the specified temperature value, making the outlet air temperature higher; or in heating mode, the condensing temperature of the indoor heat exchanger is lower than the specified temperature value, making the outlet air temperature lower, thereby affecting the user's comfort.

[0042] In this embodiment, in the cooling mode, the first temperature parameter of the indoor unit specifically refers to the evaporation temperature of the indoor unit heat exchanger, and in the heating mode, the first temperature parameter of the indoor unit specifically refers to the condensation temperature of the indoor unit heat exchanger.

[0043] It is understandable that in other embodiments, the first temperature parameter of the indoor unit may also be the temperature of the environment in which the indoor unit heat exchanger is located, or the outlet air temperature after the airflow passes through the indoor unit heat exchanger, etc.

[0044] In step S104 to step S105, when the first temperature parameter reaches the limited temperature value, it means that the evaporation temperature or condensation temperature of the current indoor heat exchanger can meet the current user's cooling or heating needs, and the air outlet temperature of the air conditioner can meet the actual needs of the user. Therefore, there is no need to adjust the operating status of other components of the air conditioner, maintain the current operating status and end the control process; when the first temperature parameter does not reach the limited temperature value, it means that when the air conditioner is under the influence of high grid load or high electricity price, the power of the air conditioner is limited, so that the operating frequency of the compressor is reduced. In the cooling mode, the evaporation temperature of the indoor heat exchanger is higher than the limited temperature value, so that the air outlet temperature is high, or in the heating mode, the condensation temperature of the indoor heat exchanger is lower than the limited temperature value, so that the air outlet temperature is low. Therefore, by lowering the wind speed of the indoor fan, the first temperature parameter can approach or reach the limited temperature value, so that the air outlet temperature of the air conditioner is closer to the actual needs of the user, thereby improving the user's comfort.

[0045] The specific meaning of the first temperature parameter not reaching the limited temperature value is: in the cooling mode, the first temperature parameter is greater than the first limited temperature value; in the heating mode, the first temperature parameter is less than the second limited temperature value.

[0046] The specific meaning of the first temperature parameter reaching the limited temperature value is: in the cooling mode, the first temperature parameter is less than or equal to the first limited temperature value; in the heating mode, the first temperature parameter is greater than or equal to the second limited temperature value.

[0047] The first limited temperature value and the second limited temperature value are related to the air outlet temperature set by the user. The first limited temperature value and the second limited temperature value may be equal or unequal, which is not specifically limited here.

[0048] Among them, the first limit temperature value and the second limit temperature value are related to the air outlet temperature value set by the user and the ambient temperature value of the indoor heat exchanger of the air conditioner. In some embodiments, the first limit temperature value is 3°C to 5°C lower than the air outlet temperature value (i.e., the cooling temperature) set by the user, and the second limit temperature value is 3°C to 5°C higher than the air outlet temperature value (i.e., the cooling temperature) set by the user.

[0049] like Figure 2 As shown, according to an embodiment of the present invention, a method for controlling an air conditioner includes the following steps:

[0050] Step S201: Obtaining an energy consumption reduction instruction;

[0051] Step S202: Obtaining the total power of the air conditioner;

[0052] Step S203: determine whether the total power P is less than or equal to the indicated power value P1, if yes, execute step S205, if no, execute step S204;

[0053] Step S204: controlling the compressor to reduce the operating frequency according to the energy consumption reduction instruction;

[0054] Step S205: obtaining a first temperature parameter of the indoor unit;

[0055] Step S206: determine whether the first temperature parameter reaches a limited temperature value, if yes, end the control process, if no, execute step S207;

[0056] Step S207: Control the indoor fan to lower the wind speed.

[0057] In this embodiment, steps 204 to 207 are the same as steps 101 to 104 and are not described again herein.

[0058] In step S201, obtaining the energy consumption reduction instruction refers to: the smart grid system or the smart building system sends the energy consumption reduction instruction to the air conditioner.

[0059] In steps S202 to S204, the indicated power value refers to the power value of the air conditioner operation limited by the energy consumption reduction instruction issued to the air conditioner by the smart grid system or the smart building system. After obtaining the energy consumption reduction instruction, it is first determined whether the total power of the current operation of the air conditioner meets the indicated power value corresponding to the energy consumption reduction instruction. If the total power is less than or equal to the indicated power value, it means that the power consumption of the current air conditioner operating state meets the requirements, so that the air conditioner maintains the current operating state unchanged. If the total power is greater than the indicated power value, the compressor is controlled to reduce the operating frequency.

[0060] like Figure 2 As shown, according to an embodiment of the present invention, a method for controlling an air conditioner includes the following steps:

[0061] Step S301: Obtaining an energy consumption reduction instruction;

[0062] Step S302: obtaining the operation mode of the air conditioner;

[0063] Step S303: turning off the electric auxiliary heating device according to the air conditioner being in heating mode;

[0064] Step S304: obtaining the total power of the air conditioner;

[0065] Step S305: determine whether the total power P is less than or equal to the indicated power value P1, if yes, execute step S307, if no, execute step S306;

[0066] Step S306: controlling the compressor to reduce the operating frequency according to the energy consumption reduction instruction;

[0067] Step S307: obtaining a first temperature parameter of the indoor unit;

[0068] Step S308: determine whether the first temperature parameter reaches a limited temperature value, if yes, end the control process, if no, execute step S309;

[0069] Step S309: Control the indoor fan to lower the wind speed.

[0070] In this embodiment, step S301 is the same as step S201, and steps 304 to 309 are the same as steps 202 to 207, which will not be described in detail herein.

[0071] In step S302 and step S303, it is determined whether the electric auxiliary heating device is turned on according to whether the air conditioner is in the heating mode. If the electric auxiliary heating device is turned on, the electric auxiliary heating device is turned off. If the electric auxiliary heating device is not turned on, the step of controlling the compressor to reduce the operating frequency is performed. It is understandable that when the compressor is in the heating mode, if the external ambient temperature is too low and only turning on the compressor cannot meet the heating demand, the electric auxiliary heating device needs to be turned on to increase the heat output of the air conditioner. However, the electric auxiliary heating device converts electrical energy into thermal energy for heating. The electric auxiliary heating device has a resistance wire inside. After being powered on, it converts electrical energy into thermal energy and transmits it to the room. The power consumption is large. Therefore, when the air conditioner receives the energy consumption reduction instruction, the electric auxiliary heating device is turned off first. It is understandable that when the air conditioner is in the cooling mode, the electric auxiliary heating device will not be turned on. Therefore, the control step in the cooling mode does not consider the factor of the electric auxiliary heating device.

[0072] like Figure 4 As shown, according to an embodiment of the present invention, a method for controlling an air conditioner includes the following steps:

[0073] Step S401: Obtaining an energy consumption reduction instruction;

[0074] Step S402: Obtaining the total power of the air conditioner;

[0075] Step S403: determine whether the total power P is less than or equal to the indicated power value P1, if yes, execute step S405, if no, execute step S404;

[0076] Step S404: controlling the compressor to reduce the operating frequency according to the energy consumption reduction instruction;

[0077] Step S405: obtaining a first temperature parameter of the indoor unit;

[0078] Step S406: determine whether the first temperature parameter reaches a limited temperature value, if yes, end the control process, if no, execute step S407;

[0079] Step S407: determine whether the wind speed of the indoor fan is at the lowest speed, if yes, end the control process, if no, execute step S408;

[0080] Step S408: Control the indoor fan to reduce by 1 gear, and execute step S406.

[0081] In this embodiment, steps 401 to 406 are the same as steps 201 to 206 and are not described again herein.

[0082] In step S407 to step S408, before controlling the indoor fan to lower the wind speed, determine whether the current wind speed of the indoor fan is at the lowest wind speed. If the indoor fan speed is not at the lowest wind speed, the indoor fan can be controlled to lower one level so that the first temperature parameter approaches or reaches the specified temperature value.

[0083] like Figure 5 As shown, according to an embodiment of the present invention, a method for controlling an air conditioner includes the following steps:

[0084] Step S501: Obtaining an energy consumption reduction instruction;

[0085] Step S502: Obtaining the total power of the air conditioner;

[0086] Step S503: determine whether the total power P is less than or equal to the indicated power value P1, if yes, execute step S507, if no, execute step S504;

[0087] Step S504: obtaining the operating frequency of the compressor;

[0088] Step S505: Determine whether the operating frequency f is greater than the frequency lower limit f1, if yes, go to step S506, otherwise go to step S507;

[0089] Step S506: controlling the compressor to reduce the first frequency value based on the operating frequency;

[0090] Step S507: obtaining a first temperature parameter of the indoor unit;

[0091] Step S508: determine whether the first temperature parameter reaches a limited temperature value, if yes, end the control process, if no, execute step S509;

[0092] Step S509: determine whether the wind speed of the indoor fan is at the lowest speed, if yes, end the control process, if no, execute step S510;

[0093] Step S510: Control the indoor fan to reduce by 1 gear, and execute step S508.

[0094] In this embodiment, steps 501 to 503 are the same as steps 401 to 403, and steps 507 to 510 are the same as steps 405 to 408, which will not be described in detail herein.

[0095] In step S504 to step S506, the compressor in the air conditioner of the present invention refers to a variable frequency compressor. Compared with a compressor with a constant speed, the speed of a variable frequency compressor can be continuously adjusted within a certain range, and the output energy can be continuously changed. Different types of compressors have different frequency ranges under the premise of ensuring stable operation. For example, the operating frequency range of some types of compressors is 20Hz to 120Hz, and the lower limit value of the frequency of this type of compressor is 20Hz; the operating frequency range of other types of compressors is 25Hz to 130Hz, and the lower limit value of the frequency of this type of compressor is 205Hz; and the operating frequency range of some other types of compressors is 30Hz to 130Hz, and the lower limit value of the frequency of this type of compressor is 30Hz; therefore, based on different types of compressors, the lower limit value of the frequency has different values, which is not specifically limited here.

[0096] When the operating frequency of the compressor is greater than the frequency lower limit, it means that the current compressor can operate normally, and the operating frequency of the compressor still has room to be reduced. Therefore, the operating frequency of the compressor is controlled to reduce the first frequency value to continue to reduce the total power of the overall operation of the air conditioner and reduce the power consumption of the air conditioner. When the operating frequency of the compressor is less than or equal to the frequency lower limit, it means that the operating frequency of the compressor does not have room to be adjusted downward. If the operating frequency of the compressor is further reduced, it will cause the compressor to operate abnormally, causing the air conditioner to operate unstable, or cause damage to the compressor. Therefore, stop further reducing the operating frequency, and execute step S507 to obtain the first temperature parameter of the indoor unit.

[0097] In some implementations, if the operating frequency of the compressor is less than the frequency lower limit, the operating frequency of the compressor is increased to the frequency lower limit to ensure that the compressor can operate normally.

[0098] In some embodiments, the first frequency value is set to a fixed value, and the value range of the first frequency value can be 1 Hz to 20 Hz, or 0.1 Hz to 10 Hz. For example, the first frequency value can be set to 1 Hz, 2 Hz, 3 Hz, 5 Hz, 6 Hz, 7 Hz, 8 Hz, 9 Hz, 10 Hz, 12 Hz, 14 Hz, 15 Hz, 18 Hz, 20 Hz, etc.

[0099] In other embodiments, the first frequency value can be adjusted according to the difference between the current operating frequency value of the compressor and the frequency lower limit value. For example, the first frequency value is set to be positively correlated with the difference between the operating frequency value and the frequency lower limit value. The larger the difference, the larger the first frequency value. In the process of multiple adjustments of the compressor, as the difference between the operating frequency of the compressor and the frequency lower limit value decreases, the first frequency value also decreases accordingly. In the process of multiple adjustments of the compressor, the first frequency value is the largest when the operating frequency of the compressor is reduced for the first time. After the operating frequency of the compressor is reduced for the first time, the first frequency value gradually decreases to achieve precise adjustment of the compressor frequency reduction. In addition, in each adjustment process, the first frequency value is less than the difference between the current operating frequency value of the compressor and the frequency lower limit value, so as to avoid the operating frequency of the compressor from being reduced below the frequency lower limit value, thereby improving the stability of the compressor operation.

[0100] In other embodiments, the first frequency value can be adjusted according to the difference between the current total power of the air conditioner and the specified power corresponding to the energy consumption reduction instruction. The first frequency value is set to be positively correlated with the difference between the current total power of the air conditioner and the specified power corresponding to the energy consumption reduction instruction. The larger the difference, the larger the first frequency value. During multiple adjustments to the compressor, as the difference between the operating frequency of the compressor and the lower limit of the frequency decreases, the first frequency value also decreases accordingly, so as to quickly reduce the total power of the air conditioner and enable the air conditioner to quickly respond to the energy consumption reduction instruction.

[0101] It should be emphasized that during each adjustment process, the first frequency value is less than the difference between the current operating frequency value of the compressor and the lower frequency limit value, so as to prevent the operating frequency of the compressor from dropping below the lower frequency limit value and improve the stability of the compressor operation.

[0102] like Figure 6 As shown, according to an embodiment of the present invention, a method for controlling an air conditioner includes the following steps:

[0103] Step S601: controlling the compressor to reduce the operating frequency according to the energy consumption reduction instruction;

[0104] Step S602: obtaining a first temperature parameter of the indoor unit;

[0105] Step S603: determine whether the first temperature parameter reaches a limited temperature value, if yes, end the control process, if no, execute steps S604 and S605;

[0106] Step S604: Control the indoor fan to lower the wind speed;

[0107] Step S605: Control the outdoor fan to lower the wind speed.

[0108] In this embodiment, steps S601 to S602 are the same as steps S101 to S102, and step S604 is the same as step S104, which will not be described in detail herein.

[0109] In step S603 and step S605, when the first temperature parameter does not reach the limited temperature value, the indoor fan and the outdoor fan can be controlled to lower the wind speed at the same time.

[0110] In detail, when the wind speed of the outdoor fan and the indoor fan is lowered, the power of the indoor fan and the outdoor fan is also reduced. Therefore, the main function of lowering the wind speed of the outdoor unit is to reduce the total power of the air conditioner. Under the premise of being able to meet the normal heat exchange between the refrigerant in the outdoor heat exchanger and the external airflow, so that the refrigerant in the outdoor heat exchanger can absorb enough heat or cold, lowering the wind speed of the outdoor fan can further reduce the total power of the air conditioner. Understandably, when the total power of the air conditioner remains unchanged, by lowering the wind speed of the outdoor fan, the operating frequency of the compressor can be increased, thereby increasing the output capacity of the air conditioner for cooling or heat, which is beneficial to make the first temperature parameter of the indoor unit closer to or reach the specified temperature value, further optimize the air outlet temperature of the air conditioner, and improve user comfort.

[0111] In some embodiments, the gear of the outdoor fan is positively correlated with the operating frequency. Specifically, when the operating frequency of the compressor is high, the cooling or heat output of the air conditioner is high, and therefore, the heat exchange required by the outdoor heat exchanger is large, so the outdoor fan is placed in a high gear to improve the heat exchange efficiency of the outdoor heat exchanger; when the operating frequency of the compressor is low, the cooling or heat output of the air conditioner is low, and therefore, the heat exchange required by the outdoor heat exchanger is small, so the gear of the outdoor fan is reduced to make the outdoor fan in a low gear, and the total power of the air conditioner is reduced while meeting the heat exchange requirement of the outdoor heat exchanger.

[0112] In some embodiments, the external fan has n gears, and the operating frequency range of the compressor in a stable operating state is divided into n frequency regions from high to low, and each frequency region corresponds to a gear of the external fan. For example, if the operating frequency range of the compressor in a stable operating state is 20Hz to 120Hz, the external fan is divided into 5 gears from high to low, the fifth gear has the highest speed, and the first gear has the lowest speed, then 20Hz to 120Hz is divided into five regions from high to low, the fifth region is 100Hz to 120Hz, corresponding to the fifth gear of the external fan; the fourth region is 80Hz to 100Hz, corresponding to the fourth gear of the external fan; the third region is 60Hz to 80Hz, corresponding to the third gear of the external fan; the second region is 40Hz to 60Hz, corresponding to the second gear of the external fan; the first region is 20Hz to 40Hz, corresponding to the first gear of the external fan.

[0113] In some embodiments, when the first temperature parameter does not reach the limited temperature value, the opening area of ​​the air outlet is reduced to further reduce the air volume of the air conditioner, so that the first temperature parameter is closer to or reaches the limited temperature value, thereby improving the user's comfort. Specifically, in this embodiment, the opening area of ​​the air outlet is changed by adjusting the angle of the air guide in the air conditioner to achieve the purpose of reducing the air volume of the air conditioner.

[0114] It should be noted that, in some embodiments, when the total power of the air conditioner is less than or equal to the indicated power value, and the wind speed of the indoor unit fan has been reduced to the lowest speed, but the first temperature parameter of the indoor unit has not yet reached the limited temperature value, the operating frequency of the compressor is controlled to increase to improve the cooling or heat output capacity of the air conditioner and ensure the comfort of the user.

[0115] like Figure 7 As shown, according to an embodiment of the present invention, in the heating mode, the control method of the air conditioner includes the following steps:

[0116] Step S701: Obtaining an energy consumption reduction instruction;

[0117] Step S702: turning off the electric auxiliary heating device and controlling the wind speed of the indoor fan to be lowered to the lowest speed;

[0118] Step S703: Obtaining the total power of the air conditioner;

[0119] Step S704: determine whether the total power P is less than or equal to the indicated power value P1, if so, end, if not, execute step S705;

[0120] Step S705: obtaining the operating frequency of the compressor;

[0121] Step S706: Determine whether the operating frequency is greater than the frequency lower limit, if yes, proceed to step S707, otherwise end;

[0122] Step S707: Control the compressor to reduce the first frequency value based on the operating frequency, and execute step S704.

[0123] In this embodiment, after the air conditioner obtains the energy consumption reduction instruction, if the air conditioner is in the heating mode, it is first determined whether the electric auxiliary heating device is turned on. If the electric auxiliary heating device is turned on, the electric auxiliary heating is turned off, and the wind speed of the indoor fan is controlled to be reduced to the lowest gear. After the wind speed of the indoor fan is reduced, the total power of the air conditioner is obtained, and it is determined whether the total power reaches the indicated power value and the compressor is controlled to reduce the frequency.

[0124] According to an embodiment of the present invention, an air conditioner is also proposed, which includes a refrigerant circulation pipeline, and a compressor 10, an indoor unit, a throttling device and an outdoor unit connected in series in the refrigerant circulation pipeline, the indoor unit includes an indoor heat exchanger and an indoor fan corresponding to the indoor heat exchanger, the outdoor unit includes an outdoor heat exchanger and an outdoor fan corresponding to the outdoor heat exchanger, an electric auxiliary heating device 40 is also provided in the indoor unit, a temperature sensor 50 is provided in the indoor heat exchanger and is used to detect a first temperature parameter of the indoor unit, a control device 60 is electrically connected to the compressor 10, the indoor fan 20, the outdoor fan 30, the electric auxiliary heating device 40 and the temperature sensor 50, and the control device 60 can control the operation of the air conditioner based on the control method of the air conditioner proposed in the present invention.

[0125] The control device 60 includes a memory 61 and at least one processor 62, wherein the memory 61 stores programs or instructions that can be run on the processor 62, and when the processor 62 executes the program or instruction, the steps of the air conditioner control method in this application are implemented.

[0126] According to an embodiment of the present invention, a computer storage medium is also provided, on which computer readable instructions are stored. When the computer readable instructions are executed by one or more processors, the one or more processors execute the control method of the air conditioner in any embodiment of the present invention. The processor involved in the present invention can be, for example, an air conditioning system, and the air conditioning system includes but is not limited to a window air conditioner, a split wall-mounted air conditioner, a split cabinet air conditioner, a ceiling air conditioner, an embedded air conditioner, and a central air conditioner. The control method of the air conditioner may include but is not limited to at least one of the following steps: obtaining an energy consumption reduction instruction; controlling the compressor to reduce the operating frequency according to the energy consumption reduction instruction; obtaining a first temperature parameter of the indoor unit; determining whether the first temperature parameter reaches a limited temperature value; controlling the indoor unit fan to reduce the wind speed according to the first temperature parameter not reaching the limited temperature value; and ending the control process according to the first temperature parameter reaching the limited temperature value.

[0127] The logic and / or steps represented in the flowchart or otherwise described herein, for example, may be considered as an ordered list of executable instructions for implementing logical functions, and may be embodied in any computer-readable storage medium for use by an instruction execution system, apparatus, or device (such as a computer-based system, a system including a processor, or other system that can fetch instructions from an instruction execution system, apparatus, or device and execute instructions), or in conjunction with such instruction execution system, apparatus, or device. For purposes of this specification, a "computer-readable storage medium" may be any device that can contain, store, communicate, propagate, or transmit a program for use by an instruction execution system, apparatus, or device, or in conjunction with such instruction execution system, apparatus, or device. More specific examples of computer-readable storage media (a non-exhaustive list) include the following: an electrical connection with one or more wirings (electronic devices), a portable computer disk case (magnetic device), a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM, Erasable Programmable Read-Only Memory, or flash memory), an optical fiber device, and a portable compact disc read-only memory (CDROM, Compact Disc Read-Only Memory). In addition, the computer-readable storage medium may even be a paper or other suitable medium on which the program is printed, since the program may be obtained electronically, for example, by optically scanning the paper or other medium, followed by editing, deciphering, or processing in another suitable manner as necessary, and then stored in a computer memory.

[0128] It should be understood that the various parts of the present invention can be implemented by hardware, software, firmware or a combination thereof. In the above-mentioned embodiment, a plurality of steps or methods can be implemented by software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented by hardware, as in another embodiment, it can be implemented by any one of the following technologies known in the art or their combination: a discrete logic circuit having a logic gate circuit for implementing a logic function for a data signal, a dedicated integrated circuit having a suitable combination of logic gate circuits, a programmable gate array (PGA, Programmable Gate Array), a field programmable gate array (FPGA, Field Programmable Gate Array), etc.

[0129] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A method for controlling an air conditioner, characterized in that: The control method comprises: Control the compressor to reduce the operating frequency according to the energy consumption reduction instruction; Obtaining a first temperature parameter of the indoor unit; Determining whether the first temperature parameter reaches a limited temperature value; Controlling the indoor fan to lower the wind speed according to the first temperature parameter not reaching the limited temperature value; End the control process according to the first temperature parameter reaching the limited temperature value; The first temperature parameter includes any one of the following: the air outlet temperature of the air conditioner, the temperature of the indoor heat exchanger, and the ambient temperature around the indoor heat exchanger.

2. The air conditioner control method according to claim 1, characterized in that: Before the step of controlling the compressor to reduce the operating frequency according to the energy consumption reduction instruction, the method further includes: Get the total power of the air conditioner; Determining whether the total power is less than or equal to the indicated power value; According to the total power being less than or equal to the indicated power value, a step of acquiring a first temperature parameter of the indoor unit is performed; The step of controlling the compressor to reduce the operating frequency is performed according to the total power being greater than the indicated power value.

3. The air conditioner control method according to claim 2, characterized in that: Before the step of obtaining the total power of the air conditioner, the control method further includes: Acquire the operating mode of the air conditioner; According to the air conditioner being in heating mode and turning off the electric auxiliary heating device, the step of determining whether the total power is less than or equal to the indicated power value is performed.

4. The air conditioner control method according to claim 2, characterized in that: The step of controlling the indoor fan to lower the wind speed comprises: Determining whether the wind speed of the indoor fan is at the lowest speed; According to the wind speed of the indoor fan being not at the lowest speed, controlling the indoor fan to reduce one speed, and executing the step of determining whether the first temperature parameter reaches a limited temperature value; The control process is ended according to the wind speed of the indoor fan being at the lowest speed.

5. The air conditioner control method according to claim 4, characterized in that: The step of controlling the compressor to reduce the operating frequency comprises: Get the operating frequency of the compressor; Determining whether the operating frequency is greater than the frequency lower limit; According to the operating frequency being greater than the frequency lower limit value, controlling the compressor to reduce a first frequency value based on the operating frequency; According to the operating frequency being less than or equal to the frequency lower limit value, the operating frequency is stopped from being lowered, and the step of obtaining the first temperature parameter of the indoor unit is performed.

6. The air conditioner control method according to claim 1, characterized in that: The control method further comprises: Controlling the outdoor fan to lower the wind speed according to the first temperature parameter not reaching the limited temperature value; Wherein, the gear position of the external fan is positively correlated with the operating frequency.

7. The air conditioner control method according to claim 1, characterized in that: The first temperature parameter not reaching the limited temperature value includes: in cooling mode, the first temperature parameter is greater than the first limited temperature value; in heating mode, the first temperature parameter is less than the second limited temperature value; The first temperature parameter reaching the limited temperature value includes: in cooling mode, the first temperature parameter is less than or equal to the first limited temperature value; in heating mode, the first temperature parameter is greater than or equal to the second limited temperature value.

8. The method for controlling an air conditioner according to any one of claims 1 to 7, characterized in that: The control method further comprises: The opening area of ​​the air outlet is reduced according to the first temperature parameter not reaching the limited temperature value.

9. An air conditioner, characterized in that: The air conditioner comprises: Compressor, indoor fan, outdoor fan, electric auxiliary heating device, temperature sensor and control device; The temperature sensor is arranged on the indoor unit heat exchanger and is used to detect a first temperature parameter of the indoor unit. The control device is electrically connected to the compressor, the indoor unit fan, the outdoor unit fan, the electric auxiliary heating device and the temperature sensor. The control device is used to control the operation of the air conditioner according to the control method of the air conditioner as described in any one of claims 1 to 8.

10. A computer storage medium, characterized in that: Computer readable instructions are stored on the computer storage medium. When the computer readable instructions are read by one or more processors, the one or more processors execute the air conditioner control method according to any one of claims 1 to 8.

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