Control method, control device, air conditioner and storage medium

Abstract

The invention discloses a control method, a control device, an air conditioner and a storage medium, and the control method comprises the steps that after the outdoor temperature is within a first preset range and the indoor temperature is within a second preset range, whether a compressor of the air conditioner, an outdoor fan and an indoor fan are all in a stable operation state or not is determined; after the compressor, the outdoor fan and the indoor fan are all in the stable operation state, whether an outdoor heat exchanger coil of the air conditioner starts to frost or not is determined; after it is determined that the outdoor heat exchanger coil starts to frost, whether the temperature rise amplitude of the indoor temperature in the first unit time is smaller than or equal to a first threshold value or not is determined; and after it is determined that the temperature rise amplitude is smaller than or equal to the first threshold value, the air conditioner is controlled to start auxiliary heating. According to the method and the device, meaningless loss of electric energy caused by the fact that auxiliary heating is started too early when the air conditioner still has heating capacity without starting the auxiliary heating can be avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioning equipment, and in particular to a control method, a control device, an air conditioner and a storage medium. Background Art

[0002] An air conditioner is a device that directly provides processed air to a room or other enclosed area, and can adjust the indoor temperature, humidity, cleanliness, and airflow speed (freshness). Generally, most of the air conditioners on the market have heating and cooling functions, but due to the working principle of the air conditioner itself, the heating effect is poor if it relies solely on the compressor, condenser, and evaporator for heating. For this reason, most air conditioners are usually equipped with auxiliary heating devices inside to assist heating in cold seasons and improve the heating effect of the air conditioner.

[0003] Since the outdoor unit is prone to frost in cold seasons, the heating capacity of the air conditioner will decrease. Existing air conditioners usually turn on auxiliary heating when the indoor unit outlet air temperature drops, causing the auxiliary heating to be turned on prematurely, resulting in meaningless loss of electricity and poor economy. Summary of the invention

[0004] The main purpose of the embodiments of the present invention is to provide a control method, a control device, an air conditioner and a storage medium, aiming to improve the technical problem in the prior art that the auxiliary heating is turned on too early, resulting in meaningless loss of electric energy.

[0005] An embodiment of the present invention provides a control method for controlling an air conditioner after the air conditioner turns on a heating mode, the control method comprising:

[0006] After the outdoor temperature is within a first preset range and the indoor temperature is within a second preset range, determining whether the compressor, the outdoor fan and the indoor fan of the air conditioner are all in a stable operating state;

[0007] After the compressor, the outdoor fan and the indoor fan are all in a stable operating state, determining whether the outdoor heat exchanger coil of the air conditioner begins to frost;

[0008] After determining that the outdoor heat exchanger coil begins to frost, determining whether the temperature rise of the indoor temperature within a first unit time is less than or equal to a first threshold;

[0009] After determining that the temperature rise is less than or equal to a first threshold, the air conditioner is controlled to start auxiliary heating.

[0010] In some embodiments of the present invention, the control method further includes:

[0011] When it is determined that the temperature rise amplitude is greater than the first threshold, determining whether the temperature rise rate of the indoor temperature in a second unit time is less than a second threshold;

[0012] When the temperature rising rate is less than a second threshold, the air conditioner is controlled to start auxiliary heating.

[0013] In some embodiments of the present invention, the step of determining whether the compressor, the outdoor fan, and the indoor fan of the air conditioner are all in a stable operating state comprises:

[0014] After the air conditioner enters the heating mode for a preset time, determining whether the operating frequency of the compressor, the speed of the outdoor fan, and the speed of the indoor fan remain consistent for at least three consecutive third unit times;

[0015] After determining that the operating frequency of the compressor, the rotation speed of the outdoor fan and the rotation speed of the indoor fan remain consistent for at least three consecutive third unit times, determine whether the compressor, the outdoor fan and the indoor fan are all in a stable operating state.

[0016] In some embodiments of the present invention, determining whether the operating frequency of the compressor, the speed of the outdoor fan, and the speed of the indoor fan remain consistent for at least three consecutive third unit times includes:

[0017] Obtaining the average operating frequency of the compressor in three consecutive third unit times, and if the difference between the compressor operating frequency in each third unit time and the average operating frequency is less than the first standard deviation, determining that the operating frequency of the compressor remains consistent for at least three consecutive third unit times;

[0018] Obtaining a first average speed of the outdoor fan in three consecutive third unit times, and if the difference between the speed of the outdoor fan in each third unit time and the first average speed is less than the second standard deviation, determining that the speed of the outdoor fan remains consistent for at least three consecutive third unit times;

[0019] Obtaining a second average speed of the indoor fan in three consecutive third unit times, and if the difference between the speed of the outdoor fan in each third unit time and the second average speed is less than a third standard deviation, determining that the speed of the indoor fan remains consistent for at least three consecutive third unit times;

[0020] After determining that the operating frequency of the compressor, the speed of the outdoor fan, and the speed of the indoor fan are respectively consistent in the same three consecutive third unit times, determine that the operating frequency of the compressor, the speed of the outdoor fan, and the speed of the indoor fan are consistent in at least three consecutive third unit times.

[0021] In some embodiments of the present invention, determining whether the outdoor heat exchanger coil of the air conditioner begins to frost includes:

[0022] When it is determined that the compressor, the outdoor fan, and the indoor fan are in a stable operating state, obtaining an initial coil temperature of the outdoor heat exchanger coil, and obtaining a coil temperature difference between a current coil temperature and the initial coil temperature every fourth unit time;

[0023] When the coil temperature difference is greater than or equal to a third threshold, it is determined that the outdoor heat exchanger coil of the air conditioner begins to frost.

[0024] In some embodiments of the present invention, the control method further includes:

[0025] When the outdoor temperature is lower than a first temperature, controlling the air conditioner to start auxiliary heating;

[0026] When the outdoor temperature is greater than a second temperature, controlling the air conditioner to turn off auxiliary heating or keep the auxiliary heating turned off;

[0027] The first temperature is a lower limit value of the first preset range, and the second temperature is an upper limit value of the first preset range.

[0028] In some embodiments of the present invention, the control method further includes:

[0029] After the air conditioner turns on auxiliary heating, if it is detected that the indoor temperature is greater than a third temperature, the air conditioner is controlled to turn off auxiliary heating, and the third temperature is an upper limit value of the second range.

[0030] In some embodiments of the present invention, a control device is further provided, comprising:

[0031] An acquisition module, used to acquire outdoor temperature, indoor temperature, compressor operating frequency, outdoor fan speed and indoor fan speed; the acquisition module is also used to acquire the temperature rise amplitude of the indoor temperature within a first unit time after determining that the outdoor heat exchanger coil begins to frost;

[0032] A judgment module, used to determine whether the compressor, the outdoor fan and the indoor fan of the air conditioner are all in a stable operating state after the outdoor temperature is within a first preset range and the indoor temperature is within a second preset range; the judgment module is also used to determine whether the outdoor heat exchanger coil of the air conditioner begins to frost after the compressor, the outdoor fan and the indoor fan are all in a stable operating state; the judgment module is also used to determine whether the temperature rise is less than or equal to a first threshold;

[0033] The control module is used to control the air conditioner to start auxiliary heating after determining that the temperature rise is less than or equal to a first threshold.

[0034] In some embodiments of the present invention, an air conditioner is further provided, comprising a memory and a processor, wherein the memory stores a computer program, and the processor is used to run the computer program in the memory to execute the steps in the above-mentioned control method.

[0035] In some embodiments of the present invention, a storage medium is further provided, wherein the storage medium stores a computer program, and the computer program is loaded and executed by a processor to execute the steps in the above control method.

[0036] Embodiments of the present invention provide a control method, device, air conditioner and storage medium. After the air conditioner turns on the heating mode, the control method determines that the compressor, outdoor fan and indoor fan of the air conditioner are all in a stable operating state, confirms that the heating capacity of the air conditioner relying on the compressor has reached the limit, and after determining that the outdoor heat exchanger coil begins to frost, turns on the auxiliary heating in time according to the change of the indoor temperature. This can avoid turning on the auxiliary heating too early when the air conditioner still has heating capacity without turning on the auxiliary heating, resulting in meaningless loss of electric energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0038] Figure 1 A schematic flow chart of a control method according to an embodiment of the present invention;

[0039] Figure 2 A schematic diagram of the structure of a control device according to an embodiment of the present invention;

[0040] Figure 3 The figure is a schematic structural diagram of an air conditioner according to an embodiment of the present invention.

[0041] Reference numerals: 10, control device; 100, acquisition module; 200, judgment module; 300, control module. DETAILED DESCRIPTION

[0042] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0043] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0044] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0045] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing in the full text includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme that satisfies both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in the field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0046] like Figure 1-Figure 3As shown, the present invention provides a control method for controlling an air conditioner after the air conditioner turns on a heating mode, the control method comprising:

[0047] S100, after the outdoor temperature is within a first preset range and the indoor temperature is within a second preset range, determining whether the compressor, the outdoor fan and the indoor fan of the air conditioner are all in a stable operating state.

[0048] Among them, the first preset range is generally limited to minus 2° to minus 7°, that is, the outdoor temperature is low, which will limit the heating capacity of the air conditioning evaporative heat exchange system. The second preset range is determined based on the set temperature (target temperature), that is, the second preset range represents a temperature range less than the set temperature. Generally, the temperature range less than 25°C is defined as the second preset range, that is, the set temperature at this time is 25°C. If the outdoor temperature is in the first preset range and the indoor temperature is in the second preset range, it means that the air conditioner is still in heating mode.

[0049] Among them, whether the compressor, outdoor fan and indoor fan of the air conditioner are all in a stable operating state can be determined based on the operating frequency of the compressor, the rotation speed of the outdoor fan and the rotation speed of the indoor fan.

[0050] S300, after the compressor, the outdoor fan and the indoor fan are all in a stable operating state, determining whether an outdoor heat exchanger coil of the air conditioner begins to frost.

[0051] Among them, generally speaking, when the compressor, outdoor fan and indoor fan are all in a stable operating state, the heating capacity of the current air conditioner's evaporative heat exchange is stable and can no longer provide more heating capacity; if the outdoor heat exchanger coil begins to frost, it will weaken the air conditioner's evaporative heat exchange heating capacity; it is generally judged by monitoring the temperature changes on the outdoor heat exchanger coil.

[0052] S500: After determining that the outdoor heat exchanger coil begins to frost, determine whether the temperature rise of the indoor temperature within a first unit time is less than or equal to a first threshold.

[0053] Among them, the temperature rise amplitude is the difference between the first indoor temperature at the initial time point in the first unit time and the second indoor temperature at the end time point in the first unit time, that is, the temperature rise amplitude = the second indoor temperature - the first indoor temperature; by the size of the temperature rise amplitude in the first unit time, it is possible to judge the heating effect of the air conditioner without turning on auxiliary heating after the outdoor heat exchanger coil begins to frost.

[0054] Among them, the first unit time can be preset in the controller of the air conditioner in advance, can be set manually through the network, or can be set according to the current environmental conditions after self-learning by the controller. The air conditioners in this application all have AI self-learning function.

[0055] The indoor temperature is generally detected periodically, that is, the temperature rise of the indoor temperature is obtained once every first unit time, so as to timely control the auxiliary heating to be turned on.

[0056] S700: After determining that the temperature rise is less than or equal to a first threshold, control the air conditioner to start auxiliary heating.

[0057] Among them, the first threshold can be a preset parameter in the air conditioner controller according to environmental factors, or it can be a specific value determined by the controller self-learning according to the current environment and user usage habits; when the temperature rise is less than or equal to the first threshold, the controller determines that the heating effect of the current air conditioner without auxiliary heating is not ideal or cannot meet user needs. Therefore, at this time, the air conditioner is controlled to turn on auxiliary heating to ensure the heating effect.

[0058] Generally, the first threshold is usually set to 0, that is, when the indoor temperature does not change or decrease after the first unit time, it is necessary to control the air conditioner to start auxiliary heating.

[0059] Based on the above, it can be understood that, for the cases where the indoor temperature is within the first preset range and the indoor temperature is within the second preset range, by determining that the compressor, outdoor fan and indoor fan of the air conditioner are all in a stable operating state, confirming that the heating capacity of the air conditioner relying on the compressor has reached the limit, and after determining that the outdoor heat exchanger coil begins to frost, the auxiliary heating is turned on in time according to the changes in the indoor temperature. This can avoid turning on the auxiliary heating too early when the air conditioner still has heating capacity without turning on the auxiliary heating, resulting in meaningless loss of electricity.

[0060] In some embodiments, the control method further comprises:

[0061] S610: When it is determined that the temperature rise amplitude is greater than the first threshold, determine whether the temperature rise rate of the indoor temperature within a second unit time is less than a second threshold.

[0062] Among them, the second unit time can be preset in the controller of the air conditioner in advance, or it can be set manually through the network, or it can be set according to the current environmental conditions after self-learning by the controller; generally, the temperature rise rate is determined by obtaining the third indoor temperature at the starting point of the second unit time, the fourth indoor temperature at the end point of the second unit time, and the second unit time, that is, the temperature rise rate = (fourth indoor temperature - third indoor temperature) / second unit time.

[0063] Generally, the duration of the second unit time is shorter than the duration of the first unit time. In some examples, the first unit time is a positive integer multiple of the second unit time, and the first unit time and the second unit time are not equal; for example, the first unit time may be 3 minutes, and the second unit time may be 1 minute.

[0064] Among them, the temperature rise rate can reflect the heating effect of the current air conditioner after the outdoor heat exchanger coil begins to frost. When the temperature rise rate is less than a certain value or is a negative rise rate, it can be determined that the current air conditioner is not turning on auxiliary heating and the heating effect is basically zero.

[0065] S620: When it is determined that the temperature rise rate is less than a second threshold, control the air conditioner to start auxiliary heating.

[0066] The second threshold is generally taken as 0, that is, when the temperature rise rate is 0 or the temperature rise rate is negative, the auxiliary heating is turned on. For some special cases, when the indoor temperature rise rate is 0 and the indoor temperature has reached the set temperature, it is not necessary to turn on the auxiliary heating of the air conditioner to save energy.

[0067] It is understandable that when the temperature rise rate is less than a certain value (such as 2°C / min), although the indoor temperature rise is still greater than 0, the user is not satisfied with the temperature rise rate. At this time, auxiliary heating can be turned on based on this control method to increase the temperature rise rate so that the indoor temperature reaches the set temperature as soon as possible.

[0068] In other examples, the first unit time can be set to a positive integer multiple of the second unit time as described above, and the first unit time and the second unit time are not equal. Here, the first unit time can be divided into a plurality of second unit times that are continuously distributed, and the temperature rise rate of the indoor temperature in each second unit time can be determined. Furthermore, the change trend of the temperature rise rate of the indoor temperature in the first unit time can be determined based on the temperature rise rate of the indoor temperature in the plurality of second unit times that are continuously distributed above; when it is determined that the change trend of the temperature rise rate of the indoor temperature in the first unit time is that the rate is gradually decreasing, it indicates that the heating performance of the air conditioner is gradually decreasing, and the air conditioner can be controlled to turn on auxiliary heating.

[0069] In some embodiments, S100, determining whether the compressor, the outdoor fan, and the indoor fan of the air conditioner are all in a stable operating state includes:

[0070] S110, after the air conditioner enters the heating mode for a preset time, determining whether the operating frequency of the compressor, the rotation speed of the outdoor fan, and the rotation speed of the indoor fan remain consistent for at least three consecutive third unit times.

[0071] The preset time may be time data pre-stored in the controller, or may be time data determined by the controller after self-learning according to environmental conditions. By making the air conditioner enter the heating mode and run for the preset time, the operation of the air conditioner is stabilized, so as to determine whether the current heating amount of the air conditioner is stable or reaches the heating limit.

[0072] Among them, the operating frequency of the compressor, the speed of the outdoor fan and the speed of the indoor fan can reflect the heating capacity of the air conditioner without turning on the auxiliary heating. Generally, the heating capacity of the air conditioner can be determined by monitoring the changes of the three parameters over a certain period of time.

[0073] The third unit time is generally 30 seconds, which may be pre-stored in the controller or determined by the controller itself according to environmental conditions after self-learning.

[0074] S120, after determining that the operating frequency of the compressor, the rotation speed of the outdoor fan and the rotation speed of the indoor fan remain consistent for at least three consecutive third unit times, determine whether the compressor, the outdoor fan and the indoor fan are all in a stable operating state.

[0075] Among them, due to the errors in mechanical operation, in order to judge whether the compressor operating frequency remains consistent for three consecutive third unit times, the difference between the maximum and minimum values ​​of the compressor operating frequency in three consecutive third unit times can be allowed to be within the standard frequency error range, then it can be determined that the compressor is in a stable operating state.

[0076] Similarly, to determine whether the speed of the outdoor fan remains consistent for three consecutive third unit times, the difference between the maximum and minimum speeds of the outdoor fan in three consecutive third unit times can be allowed to be within the standard speed error range, then it can be determined that the outdoor fan is in a stable operating state.

[0077] Similarly, to determine whether the speed of the indoor fan remains consistent for three consecutive third unit times, the difference between the maximum and minimum speeds of the indoor fan in three consecutive third unit times can be allowed to be within the standard speed error range, then it can be determined that the indoor fan is in a stable operating state.

[0078] In some embodiments, S110, determining whether the operating frequency of the compressor, the rotation speed of the outdoor fan, and the rotation speed of the indoor fan remain consistent for at least three consecutive third unit times includes:

[0079] The average operating frequency of the compressor in three consecutive third unit times is obtained. If the difference between the compressor operating frequency in each third unit time and the average operating frequency is less than the first standard deviation, it is determined that the operating frequency of the compressor remains consistent for at least three consecutive third unit times.

[0080] That is, if the compressor operating frequencies in three consecutive third unit times are h1, h2, and h3 respectively, then the average operating frequency in three consecutive third unit times is h0=(h1+h2+h3) / 3; then calculate the difference between each compressor operating frequency and the average operating frequency q1=h1-h0, q2=h2-h0, q3=h3-h0 respectively; if q1, q2, q3 are all less than the first standard deviation q0, it is determined that the operating frequency of the compressor remains consistent for at least three consecutive third unit times.

[0081] It should be noted that when comparing the difference between the compressor operating frequency and the average operating frequency with the first standard deviation, it is necessary to perform absolute value processing on the difference, that is, only the magnitude of the digital part is compared.

[0082] The first standard deviation value may be data preset in the controller, or may be a real-time value determined by the controller according to the ambient temperature after self-learning.

[0083] Obtain a first average speed of the outdoor fan in three consecutive third unit times. If the difference between the outdoor fan speed in each third unit time and the first average speed is less than the second standard deviation, it is determined that the speed of the outdoor fan remains consistent for at least three consecutive third unit times.

[0084] Among them, referring to the above-mentioned judgment method of whether the corresponding compressor frequency is in a stable state, the outdoor fan speeds v1, v2, and v3 of the outdoor fan in three consecutive third unit times are obtained, and the average speed in three consecutive third unit times is v0=(v1+v2+v3) / 3, and then the difference between each outdoor fan speed and the average speed w1=v1-v0, w2=v2-v0, w3=v3-v0 is calculated respectively; if w1, w2, and w3 are all less than the second standard deviation w0, it is determined that the speed of the outdoor fan remains consistent for at least three consecutive third unit times.

[0085] It should be noted that when the difference between the outdoor fan speed and the average speed is compared with the second standard deviation, the difference needs to be processed in absolute value, that is, only the magnitude of the digital part is compared.

[0086] The second standard deviation value may be data preset in the controller, or may be a real-time value determined by the controller according to the ambient temperature after self-learning.

[0087] Obtain the second average speed of the indoor fan in three consecutive third unit times. If the difference between the outdoor fan speed and the second average speed in each third unit time is less than the third standard deviation, it is determined that the speed of the indoor fan remains consistent for at least three consecutive third unit times.

[0088] Among them, the method for determining whether the indoor fan is in a stable operating state is consistent with the above-mentioned determination method of the outdoor fan. Technical personnel in this field can understand and implement the determination of whether the indoor fan is in a stable operating state based on the above description, so it will not be repeated here.

[0089] After determining that the operating frequency of the compressor, the speed of the outdoor fan and the speed of the indoor fan are respectively consistent in the same three consecutive third unit times, determine that the operating frequency of the compressor, the speed of the outdoor fan and the speed of the indoor fan are consistent in at least three consecutive third unit times.

[0090] That is, it is necessary to determine that the operating frequency of the compressor, the speed of the outdoor fan and the speed of the indoor fan are respectively consistent in the same three consecutive third unit times, and only then can it be determined that the operating frequency of the compressor, the speed of the outdoor fan and the speed of the indoor fan are consistent in at least three consecutive third unit times.

[0091] In some embodiments, S300, determining whether an outdoor heat exchanger coil of the air conditioner begins to frost includes:

[0092] S310, when determining whether the compressor, the outdoor fan, and the indoor fan are all in a stable operating state, obtaining an initial coil temperature of the outdoor heat exchanger coil, and obtaining a coil temperature difference between the current coil temperature and the initial coil temperature every fourth unit time.

[0093] The fourth unit time may be time data preset in the controller, or may be determined by the controller itself according to the outdoor temperature after self-learning.

[0094] S320: When the coil temperature difference is greater than or equal to a third threshold, it is determined that the outdoor heat exchanger coil of the air conditioner begins to frost.

[0095] The coil temperature difference = the current coil temperature - the initial coil temperature. If the coil temperature difference is less than the third threshold, it means that the coil temperature has dropped, and it can be determined that the outdoor heat exchanger coil begins to frost.

[0096] The third threshold value may be data preset in the controller, or may be data determined by the controller after self-learning. Generally, the third threshold value is 0.

[0097] In some embodiments, the control method further comprises:

[0098] S800: When the outdoor temperature is lower than a first temperature, the air conditioner is controlled to start auxiliary heating.

[0099] Among them, the first temperature is an extremely low temperature, which is preset in the controller in advance. When the outdoor temperature is lower than the first temperature, the auxiliary heating needs to be turned on immediately to ensure the heating effect of the air conditioner in an extremely low temperature environment.

[0100] Typically, the first temperature is -7°C.

[0101] S900: When the outdoor temperature is greater than a second temperature value, the air conditioner is controlled to turn off the auxiliary heating or keep the auxiliary heating turned off.

[0102] Among them, the second temperature is a higher temperature, which is preset in the controller in advance. When the outdoor temperature is higher than the second temperature, the air conditioner has a better heating effect without turning on the auxiliary heating. Therefore, when the outdoor temperature is greater than the second temperature, the auxiliary heating can be directly turned off or kept turned off.

[0103] Typically, the second temperature is 4°C.

[0104] The first temperature is a lower limit value of the first preset range, and the second temperature is an upper limit value of the first preset range.

[0105] That is, the first preset range is greater than or equal to the first temperature and less than or equal to the second temperature.

[0106] For example, the first preset range is: [-7°C, 4°C].

[0107] In some embodiments, the control method further comprises:

[0108] S1000, after the air conditioner turns on auxiliary heating, if it is detected that the indoor temperature is greater than a third temperature, the air conditioner is controlled to turn off the auxiliary heating, and the third temperature is an upper limit value of the second range.

[0109] Among them, the third temperature is generally a set temperature or a comfortable and stable human body temperature stored in a controller.

[0110] In some embodiments, the present invention further provides a control device 10, comprising an acquisition module 100, a judgment module 200 and a control module 300. The acquisition module 100 is used to acquire the outdoor temperature, indoor temperature, compressor operating frequency, outdoor fan speed and indoor fan speed; the acquisition module 100 is also used to acquire the temperature rise of the indoor temperature in the first unit time after determining that the outdoor heat exchanger coil begins to frost. The judgment module 200 is used to determine whether the compressor, outdoor fan and indoor fan of the air conditioner are all in a stable operating state after the outdoor temperature is within the first preset range and the indoor temperature is within the second preset range; the judgment module 200 is also used to determine whether the outdoor heat exchanger coil of the air conditioner begins to frost after the compressor, outdoor fan and indoor fan are all in a stable operating state. The judgment module 200 is also used to determine whether the temperature rise is less than or equal to the first threshold. The control module 300 is used to control the air conditioner to turn on auxiliary heating after determining that the temperature rise is less than or equal to the first threshold.

[0111] In some embodiments, the present invention further provides an air conditioner, which may include one or more processors 601 of processing cores, one or more computer-readable storage media memories 602, a power supply 603, an input unit 604 and other components. Those skilled in the art will appreciate that the structure of the air conditioner described above does not constitute a limitation on the air conditioner, and may include more or fewer components, or combine certain components, or arrange the components differently. Among them:

[0112] The processor 601 is the controller of the air conditioner, and uses various interfaces and lines to connect various parts of the entire air conditioner. By running or executing software programs and / or modules stored in the memory 602, and calling data stored in the memory 602, the processor 601 performs various functions of the air conditioner and processes data, thereby monitoring the air conditioner as a whole. Optionally, the processor 601 may include one or more processing cores; preferably, the processor 601 may integrate an application processor 601 and a modem processor 601, wherein the application processor 601 mainly processes the operating system, user interface and computer programs, etc., and the modem processor 601 mainly processes wireless communications. It is understandable that the above-mentioned modem processor 601 may not be integrated into the processor 601.

[0113] The memory 602 can be used to store software programs and modules. The processor 601 executes various functional applications and data processing by running the software programs and modules stored in the memory. The memory may mainly include a program storage area and a data storage area, wherein the program storage area may store an operating system, a computer program required for at least one function (such as a sound playback function, an image playback function, etc.), etc.; the data storage area may store data created according to the use of the server, etc. In addition, the memory may include a high-speed random access memory, and may also include a non-volatile memory, such as at least one disk storage device, a flash memory device, or other volatile solid-state storage devices. Accordingly, the memory may also include a memory controller to provide the processor 601 with access to the memory.

[0114] The air conditioner also includes a power supply 603 for supplying power to each component. Preferably, the power supply 603 can be logically connected to the processor 601 through a power management system, so as to manage charging, discharging, and power consumption through the power management system. The power supply can also include any components such as one or more DC or AC power supplies, recharging systems, power failure detection circuits, power converters or inverters, and power status indicators.

[0115] The air conditioner may further include an input unit 604, which may be used to receive input digital or character information and generate keyboard, mouse, joystick, optical or trackball signal input related to user settings and function control.

[0116] Although not shown, the air conditioner may further include a display unit, etc., which will not be described in detail herein. Specifically, in this embodiment, the processor 601 in the air conditioner will load the executable files corresponding to the processes of one or more computer programs into the memory 602 according to the following instructions, and the processor 601 will run the computer programs stored in the memory 602 to perform the following steps:

[0117] After the outdoor temperature is within the first preset range and the indoor temperature is within the second preset range, determining whether the compressor, the outdoor fan and the indoor fan of the air conditioner are all in a stable operating state;

[0118] After the compressor, outdoor fan, and indoor fan are in stable operation, determine whether the outdoor heat exchanger coil of the air conditioner begins to frost;

[0119] After determining that the outdoor heat exchanger coil begins to frost, determining whether the temperature rise of the indoor temperature within a first unit time is less than or equal to a first threshold;

[0120] After determining that the temperature rise is less than or equal to the first threshold, the air conditioner is controlled to start auxiliary heating.

[0121] After the air conditioner is turned on in the heating mode, for the cases where the indoor temperature is within the first preset range or the indoor temperature is within the second preset range, the air conditioner determines that the compressor, the outdoor fan and the indoor fan are all in a stable operating state, confirms that the heating capacity of the air conditioner relying on the compressor has reached its limit, and after determining that the outdoor heat exchanger coil begins to frost, the auxiliary heating is turned on in time according to the changes in the indoor temperature. This can avoid turning on the auxiliary heating too early when the air conditioner still has heating capacity without turning on the auxiliary heating, resulting in meaningless loss of electricity.

[0122] A person skilled in the art will appreciate that all or part of the steps in any of the methods in the above embodiments may be completed by a computer program, or by controlling related hardware through a computer program. The computer program may be stored in a computer-readable storage medium and loaded and executed by the processor 601.

[0123] In some embodiments, the present invention further provides a storage medium, the storage medium stores a computer program, and the computer program is loaded by a processor to perform the following steps:

[0124] After the outdoor temperature is within the first preset range and the indoor temperature is within the second preset range, determining whether the compressor, the outdoor fan and the indoor fan of the air conditioner are all in a stable operating state;

[0125] After the compressor, outdoor fan, and indoor fan are in stable operation, determine whether the outdoor heat exchanger coil of the air conditioner begins to frost;

[0126] After determining that the outdoor heat exchanger coil begins to frost, determining whether the temperature rise of the indoor temperature within a first unit time is less than or equal to a first threshold;

[0127] After determining that the temperature rise is less than or equal to the first threshold, the air conditioner is controlled to start auxiliary heating.

[0128] Through the above steps, after the air conditioner turns on the heating mode, for the cases where the indoor temperature is within the first preset range and the indoor temperature is within the second preset range, by determining that the compressor, the outdoor fan and the indoor fan of the air conditioner are all in a stable operating state, it is confirmed that the heating capacity of the air conditioner relying on the compressor has reached its limit, and after determining that the outdoor heat exchanger coil begins to frost, the auxiliary heating is turned on in time according to the changes in the indoor temperature, which can avoid the air conditioner turning on the auxiliary heating too early when the auxiliary heating is not turned on and still has heating capacity, resulting in meaningless loss of electric energy.

[0129] It will be appreciated by those skilled in the art that any reference to memory, storage, database or other medium used in the embodiments provided by the present invention may include non-volatile and / or volatile memory. Non-volatile memory may include read-only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM) or flash memory. Volatile memory may include random access memory (RAM) or external cache memory. As an illustration and not limitation, RAM is available in a variety of forms, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDRSDRAM), enhanced SDRAM (ESDRAM), synchronous link (Synch l ink), DRAM (SLDRAM), memory bus (Rambus) direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM).

[0130] Since the computer program stored in the storage medium can execute the steps in the air-conditioning control method in any embodiment provided by the present invention, the beneficial effects that can be achieved by the air-conditioning control method in any embodiment provided by the present invention can be achieved. Please refer to the previous embodiments for details and will not be repeated here.

[0131] The specific implementation of the above operations can be found in the previous embodiments, which will not be described in detail here.

[0132] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, please refer to the detailed description of other embodiments above, and will not be repeated here.

[0133] The above descriptions are only optional embodiments of the present invention, and are not intended to limit the patent scope of the present invention. All equivalent structural changes made using the contents of the present invention's specification and drawings, or directly / indirectly applied in other related technical fields, within the application concept of the present invention are included in the patent protection scope of the present invention.

Claims

1. A control method for controlling an air conditioner after the air conditioner turns on a heating mode, characterized in that: The control method comprises: After the outdoor temperature is within a first preset range and the indoor temperature is within a second preset range, determining whether the compressor, the outdoor fan and the indoor fan of the air conditioner are all in a stable operating state; After the compressor, the outdoor fan and the indoor fan are all in a stable operating state, determining whether the outdoor heat exchanger coil of the air conditioner begins to frost; When it is determined that the outdoor heat exchanger coil begins to frost, determining whether the temperature rise of the indoor temperature within a first unit time is less than or equal to a first threshold; When it is determined that the temperature rise amplitude is less than or equal to a first threshold, the air conditioner is controlled to start auxiliary heating.

2. The control method according to claim 1, characterized in that: The control method further comprises: When it is determined that the temperature rise amplitude is greater than the first threshold, determining whether the temperature rise rate of the indoor temperature in a second unit time is less than a second threshold; When it is determined that the temperature rising rate is less than a second threshold, the air conditioner is controlled to start auxiliary heating.

3. The control method according to claim 1, characterized in that: The step of determining whether the compressor, the outdoor fan, and the indoor fan of the air conditioner are all in a stable operating state comprises: After the air conditioner enters the heating mode for a preset time, determining whether the operating frequency of the compressor, the speed of the outdoor fan, and the speed of the indoor fan remain consistent for at least three consecutive third unit times; After determining that the operating frequency of the compressor, the rotation speed of the outdoor fan and the rotation speed of the indoor fan remain consistent for at least three consecutive third unit times, it is determined that the compressor, the outdoor fan and the indoor fan are all in a stable operating state.

4. The control method according to claim 1, characterized in that: The determining whether the operating frequency of the compressor, the rotation speed of the outdoor fan, and the rotation speed of the indoor fan are all consistent for at least three consecutive third unit times includes: Obtaining an average operating frequency of the compressor in three consecutive third unit times, and if the difference between the compressor operating frequency in each third unit time and the average operating frequency is less than the first standard deviation, determining that the operating frequency of the compressor remains consistent for at least three consecutive third unit times; Obtaining a first average speed of the outdoor fan in three consecutive third unit times, and if the difference between the speed of the outdoor fan in each third unit time and the first average speed is less than the second standard deviation, determining that the speed of the outdoor fan remains consistent for at least three consecutive third unit times; Obtaining a second average speed of the indoor fan in three consecutive third unit times, and if the difference between the outdoor fan speed in each third unit time and the second average speed is less than a third standard deviation, determining that the indoor fan remains consistent in at least three consecutive third unit times; After determining that the operating frequency of the compressor, the speed of the outdoor fan, and the speed of the indoor fan are respectively consistent in the same three consecutive third unit times, determine that the operating frequency of the compressor, the speed of the outdoor fan, and the speed of the indoor fan are consistent in at least three consecutive third unit times.

5. The control method according to claim 1, characterized in that: Determining whether the outdoor heat exchanger coil of the air conditioner begins to frost, comprising: When it is determined that the compressor, the outdoor fan, and the indoor fan are in a stable operating state, obtaining an initial coil temperature of the outdoor heat exchanger coil, and obtaining a coil temperature difference between a current coil temperature and the initial coil temperature every fourth unit time; When the coil temperature difference is greater than or equal to a third threshold, it is determined that the outdoor heat exchanger coil of the air conditioner begins to frost.

6. The control method according to claim 1, characterized in that: The control method further comprises: When the outdoor temperature is lower than a first temperature, controlling the air conditioner to start auxiliary heating; When the outdoor temperature is greater than a second temperature, controlling the air conditioner to turn off auxiliary heating or keep the auxiliary heating turned off; The first temperature is a lower limit value of the first preset range, and the second temperature is an upper limit value of the first preset range.

7. The control method according to claim 6, characterized in that: The control method further comprises: After the air conditioner turns on auxiliary heating, if it is detected that the indoor temperature is greater than a third temperature, the air conditioner is controlled to turn off auxiliary heating, and the third temperature is an upper limit value of the second range.

8. A control device, characterized in that: include: An acquisition module is used to obtain outdoor temperature, indoor temperature, compressor operating frequency, outdoor fan speed and indoor fan speed; The acquisition module is also used to acquire the temperature rise amplitude of the indoor temperature within a first unit time after determining that the outdoor heat exchanger coil begins to frost; A judgment module, used to determine whether the compressor, the outdoor fan and the indoor fan of the air conditioner are all in a stable operating state after the outdoor temperature is within a first preset range and the indoor temperature is within a second preset range; the judgment module is also used to determine whether the outdoor heat exchanger coil of the air conditioner begins to frost after the compressor, the outdoor fan and the indoor fan are all in a stable operating state; the judgment module is also used to determine whether the temperature rise is less than or equal to a first threshold; The control module is used to control the air conditioner to start auxiliary heating after determining that the temperature rise is less than or equal to a first threshold.

9. An air conditioner, characterized in that: It comprises a memory and a processor, wherein the memory stores a computer program, and the processor is used to run the computer program in the memory to execute the steps in the control method according to any one of claims 1 to 7.

10. A storage medium, characterized in that: The storage medium stores a computer program, and the computer program is loaded and executed by the processor to execute the steps in the control method according to any one of claims 1 to 7.

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