Control method, control device, air conditioner and storage medium

Abstract

The application discloses a control method, a control device, an air conditioner and a storage medium, and relates to the technical field of air conditioners. The control method comprises the following steps: determining whether the compressor, the outdoor fan and the indoor fan of the air conditioner are all in a stable running state when the outdoor temperature is in a first preset range and the indoor temperature is in a second preset range; determining whether the outdoor heat exchanger coil of the air conditioner starts frosting when the compressor, the outdoor fan and the indoor fan are all in the stable running state; determining whether the temperature rise amplitude of the indoor temperature in a first unit time is less than or equal to a first threshold value when it is determined that the outdoor heat exchanger coil starts frosting; and controlling the air conditioner to start auxiliary heating when it is determined that the temperature rise amplitude is less than or equal to the first threshold value. The application can avoid the situation that the auxiliary heating is started too early when the air conditioner still has a heating capacity without starting the auxiliary heating, and the electric energy is wasted unnecessarily.

Description

TECHNICAL FIELD

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

[0002] The air conditioner, namely the air conditioner, is a device for directly providing treated air to a room or other closed area, which can adjust the temperature, humidity, cleanliness and air flow speed (freshness) in the room. Generally, most of the air conditioners on the market have heating and cooling functions, but due to the working principle of the air conditioner, the heating is simply relied on the compressor, the condenser and the evaporator, and the heating effect is poor. Therefore, most air conditioners usually have auxiliary heating devices inside for auxiliary heating in cold seasons to improve the heating effect of the air conditioner.

[0003] Because the outdoor unit is easy to frost in cold seasons, the heating capacity of the air conditioner will decrease, and the existing air conditioner usually starts auxiliary heating when the indoor unit outlet temperature decreases, which causes the auxiliary heating to start too early, resulting in meaningless consumption of electric energy and poor economy. SUMMARY

[0004] The main purpose of the embodiments of the present application is to provide a control method, a control device, an air conditioner and a storage medium, which aims to improve the technical problem of meaningless consumption of electric energy caused by early start of auxiliary heating in the prior art.

[0005] The embodiments of the present application provide a control method for controlling an air conditioner after the air conditioner starts a heating mode, and the control method comprises the following steps:

[0006] After the outdoor temperature is in a first preset range and the indoor temperature is in a second preset range, it is determined whether the compressor, the outdoor fan and the indoor fan of the air conditioner are in a stable running state;

[0007] After the compressor, the outdoor fan and the indoor fan are in a stable running state, it is determined whether the outdoor heat exchanger coil of the air conditioner starts frosting;

[0008] After it is determined that the outdoor heat exchanger coil starts frosting, it is determined whether the temperature rise amplitude of the indoor temperature in a first unit time is less than or equal to a first threshold value;

[0009] After it is determined that the temperature rise amplitude is less than or equal to the first threshold value, the air conditioner starts auxiliary heating.

[0010] In some embodiments of the present application, the control method further comprises:

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

[0012] controlling the air conditioner to start auxiliary heating when the temperature rising rate is less than the second threshold value.

[0013] In some embodiments of the present application, the determination of whether the compressor, the outdoor fan and the indoor fan of the air conditioner are in stable operation state comprises:

[0014] determining whether the running frequency of the compressor, the rotating speed of the outdoor fan and the rotating speed of the indoor fan are consistent for at least three continuous third unit times after the air conditioner enters the heating mode for a preset time;

[0015] determining whether the compressor, the outdoor fan and the indoor fan are in stable operation state after it is determined that the running frequency of the compressor, the rotating speed of the outdoor fan and the rotating speed of the indoor fan are consistent for at least three continuous third unit times.

[0016] In some embodiments of the present application, the determination of whether the running frequency of the compressor, the rotating speed of the outdoor fan and the rotating speed of the indoor fan are consistent for at least three continuous third unit times comprises:

[0017] obtaining an average running frequency of the compressor in three continuous third unit times, and determining that the running frequency of the compressor is consistent for at least three continuous third unit times if the difference between the running frequency of the compressor in each third unit time and the average running frequency is less than a first standard difference value;

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

[0019] obtaining a second average rotating speed of the indoor fan in three continuous third unit times, and determining that the rotating speed of the indoor fan is consistent for at least three continuous third unit times if the difference between the rotating speed of the indoor fan in each third unit time and the second average rotating speed is less than a third standard difference value;

[0020] determining that the operating frequency of the compressor, the rotating speed of the outdoor fan and the rotating speed of the indoor fan remain consistent for at least three continuous third unit times.

[0021] In some embodiments of the present application, determining whether the outdoor heat exchanger coil of the air conditioner starts frosting comprises:

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

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

[0024] In some embodiments of the present application, the control method further comprises:

[0025] When the outdoor temperature is less than a first temperature, the air conditioner is controlled to start auxiliary heating.

[0026] When the outdoor temperature is greater than a second temperature, the air conditioner is controlled to stop auxiliary heating or keep auxiliary heating stopped.

[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 application, the control method further comprises:

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

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

[0031] An obtaining module is configured to obtain an outdoor temperature, an indoor temperature, an operating frequency of a compressor, a rotating speed of an outdoor fan and a rotating speed of an indoor fan, and the obtaining module is further configured to obtain a temperature rise amplitude of the indoor temperature in a first unit time after it is determined that the outdoor heat exchanger coil starts frosting.

[0032] a judgment module, configured to determine whether the compressor, the outdoor fan and the indoor fan of the air conditioner are in stable operation states when the outdoor temperature is in a first preset range and the indoor temperature is in a second preset range; the judgment module is further configured to determine whether the outdoor heat exchanger coil of the air conditioner starts frosting when the compressor, the outdoor fan and the indoor fan are in stable operation states; and the judgment module is further configured to determine whether the temperature rise amplitude is less than or equal to a first threshold value.

[0033] a control module, configured to control the air conditioner to start auxiliary heating when it is determined that the temperature rise amplitude is less than or equal to the first threshold value.

[0034] In some embodiments of the present application, an air conditioner is also provided, which comprises a memory and a processor, the memory stores a computer program, and the processor is configured to run the computer program in the memory to execute the steps of the control method described above.

[0035] In some embodiments of the present application, a storage medium is also provided, which stores a computer program, and the computer program is loaded and executed by a processor to execute the steps of the control method described above.

[0036] Embodiments of the present application provide a control method, device, air conditioner and storage medium. The control method determines that the heating capacity of the compressor of the air conditioner has reached the limit when the compressor, the outdoor fan and the indoor fan of the air conditioner are in stable operation states in the case that the indoor temperature is in a first preset range and the indoor temperature is in a second preset range after the air conditioner starts heating mode. The auxiliary heating is started in time according to the change of the indoor temperature when the outdoor heat exchanger coil starts frosting, which can avoid the air conditioner starting auxiliary heating too early when the air conditioner still has heating capacity without starting auxiliary heating, resulting in meaningless loss of electric energy. BRIEF DESCRIPTION OF DRAWINGS

[0037] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor based on the drawings shown.

[0038] Fig. 1 The flowchart of the control method of an embodiment of the present application;

[0039] Fig. 2 The structural schematic diagram of the control device of an embodiment of the present application;

[0040] Fig. 3 Structure schematic diagram of air conditioner of one embodiment of the present application.

[0041] The figure mark: 10, control device;100, acquisition module;200, judgment module;300, control module. DETAILED DESCRIPTION

[0042] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work shall fall within the scope of protection of the present application.

[0043] It should be noted that all directionality indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present application are only used to explain the relative positional relationship, movement condition, etc. between components in a certain posture (as shown in the drawings), and if the certain posture changes, the directionality indications will also change accordingly.

[0044] In the present application, unless otherwise explicitly specified and limited, the terms "connection", "fixation", etc. shall be understood in a broad sense, for example, "fixation" can be fixed connection, or detachable connection, or integral; can be mechanical connection, or electrical connection; can be direct connection, or indirect connection through an intermediate medium; can be internal communication of two elements or interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0045] In addition, if the present application has descriptions involving "first", "second", etc., the descriptions of "first", "second", etc. are only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features with "first" and "second" can explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing throughout the text includes three parallel solutions. Taking "A and / or B" as an example, it includes A solution, or B solution, or A and B solution. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of those skilled in the art, and when the combination of technical solutions appears contradictory or unachievable, it shall be considered that the combination of technical solutions does not exist, and is not within the scope of protection claimed by the present application.

[0046] As Figs. 1-3As shown, the present application provides a control method for controlling an air conditioner after the air conditioner starts a heating mode, the control method comprising:

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

[0048] Wherein, 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 conditioner 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, and generally a temperature range less than 25℃ is defined as the second preset range, that is, the set temperature at this time is 25℃. The outdoor temperature in the first preset range and the indoor temperature in the second preset range represent that the air conditioner is still in the heating mode.

[0049] Wherein, the determination of whether the compressor, the outdoor fan and the indoor fan of the air conditioner are in stable running states can be determined according to the running frequency of the compressor, the rotating speed of the outdoor fan and the rotating speed of the indoor fan.

[0050] S300, determining whether the outdoor heat exchanger coil of the air conditioner starts frosting after the compressor, the outdoor fan and the indoor fan are in stable running states.

[0051] Wherein, generally, when the compressor, the outdoor fan and the indoor fan are in stable running states, the current air conditioner evaporative heat exchange heating capacity is stable and cannot provide more heating capacity; if the outdoor heat exchanger coil starts frosting, the air conditioner evaporative heat exchange heating capacity will be weakened; generally, the temperature change on the outdoor heat exchanger coil is monitored to determine.

[0052] S500, determining whether the indoor temperature rising amplitude in a first unit of time is less than or equal to a first threshold value after determining that the outdoor heat exchanger coil starts frosting.

[0053] Wherein, the temperature rising amplitude is the difference between the first indoor temperature at the initial time point in the first unit of time and the second indoor temperature at the end time point in the first unit of time, that is, the temperature rising amplitude = second indoor temperature - first indoor temperature; by determining the size of the temperature rising amplitude in the first unit of time, the heating effect of the air conditioner without starting auxiliary heating after the outdoor heat exchanger coil starts frosting can be determined.

[0054] Wherein, the first unit of time can be pre-set in the controller of the air conditioner, can be artificially set through the network, or can be set by the controller after self-learning according to the current environmental conditions, wherein the air conditioner in the present application has an AI self-learning function.

[0055] wherein, the indoor temperature is detected periodically, i.e. the temperature rise amplitude of the indoor temperature is obtained every first unit time, so as to control the auxiliary heating to be turned on in time.

[0056] S700, after determining that the temperature rise amplitude is less than or equal to the first threshold value, the air conditioner is controlled to turn on the auxiliary heating.

[0057] wherein, the first threshold value can be a preset parameter in the air conditioner controller according to environmental factors, or a specific value determined by the controller according to the current environment and user usage habits; when the temperature rise amplitude is less than or equal to the first threshold value, the controller determines that the heating effect of the air conditioner without turning on the auxiliary heating is not ideal or cannot meet the user's demand, therefore, the air conditioner is controlled to turn on the auxiliary heating at this time to ensure the heating effect.

[0058] Generally, the first threshold value is set to 0, i.e. when the first unit time elapses, the indoor temperature does not change or decreases, and the air conditioner needs to be controlled to turn on the auxiliary heating.

[0059] According to the above, it can be understood that for the case that the indoor temperature is in the first preset range and the indoor temperature is in the second preset range, by determining that the compressor, the outdoor fan and the indoor fan of the air conditioner are in a stable running state, it is confirmed 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 starts to frost, the auxiliary heating is turned on in time according to the change of the indoor temperature, which can avoid the air conditioner from turning on the auxiliary heating too early when it still has heating capacity without turning on the auxiliary heating, resulting in meaningless loss of electric energy.

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

[0061] S610, when determining that the temperature rise amplitude is greater than the first threshold value, determining whether the temperature rise rate of the indoor temperature in the second unit time is less than the second threshold value.

[0062] wherein, the second unit time can be preset in the controller of the air conditioner, can be set artificially through the network, or can be set by the controller according to the current environmental conditions after self-learning; 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 ending point of the second unit time, and the second unit time, i.e. the temperature rise rate = (the fourth indoor temperature - the third indoor temperature) / the second unit time.

[0063] Generally, the length of the second unit time is less than the length of the first unit time. In some examples, the first unit time is an 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 can be 3 min, and the second unit time can be 1 min.

[0064] The temperature rising rate can reflect the heating effect of the air conditioner after the outdoor heat exchanger coil starts to frost. When the temperature rising rate is less than a certain value or is a negative rising rate, it is determined that the air conditioner is not in the auxiliary heating mode, and the heating effect is basically zero.

[0065] S620, when it is determined that the temperature rising rate is less than the second threshold, the auxiliary heating of the air conditioner is controlled to be turned on.

[0066] The second threshold is generally 0, that is, when the temperature rising rate is 0 or the temperature rising rate is negative, the auxiliary heating is turned on. For some special cases, when the temperature rising rate of the indoor temperature is 0 and the indoor temperature has reached the set temperature, the auxiliary heating of the air conditioner can not be turned on to save power.

[0067] It can be understood that when the temperature rising rate is less than a certain value (such as 2℃ / min), although the indoor temperature rising amplitude is still greater than 0, the user is not satisfied with the temperature rising rate, and the auxiliary heating can be turned on based on the control method to improve the temperature rising rate and make the indoor temperature reach the set temperature as soon as possible.

[0068] In other examples, the first unit time can be set as 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 distributed continuously, and the temperature rising rate of the indoor temperature in each second unit time is determined. Further, according to the temperature rising rate of the indoor temperature in the plurality of second unit times distributed continuously, the change trend of the temperature rising rate of the indoor temperature in the first unit time is determined; when the change trend of the temperature rising rate of the indoor temperature in the first unit time is that the rate gradually decreases, it indicates that the heating performance of the air conditioner gradually decreases, and the auxiliary heating of the air conditioner can be controlled to be turned on.

[0069] In some embodiments, S100, it is determined whether the compressor, the outdoor fan and the indoor fan of the air conditioner are in stable running state, comprising:

[0070] S110, after the air conditioner enters the heating mode for a preset time, it is determined whether the running frequency of the compressor, the rotating speed of the outdoor fan and the rotating speed of the indoor fan are consistent at least in three third unit times continuously.

[0071] The preset time can be time data pre-stored in the controller, or time data determined by the controller after self-learning according to the environment. By making the air conditioner run in the heating mode for a preset time, the running of the air conditioner tends to be stable, so that it can be determined that the heating capacity of the air conditioner tends to be stable, or reaches the limit of the heating capacity.

[0072] The running frequency of the compressor, the rotating speed of the outdoor fan and the rotating speed of the indoor fan can reflect the heating capacity of the air conditioner without starting the auxiliary heating. Generally, the heating capacity of the air conditioner can be determined by monitoring the change of the three parameters in a certain time.

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

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

[0075] Since there is an error in mechanical operation, for judging whether the running frequency of the compressor remains consistent for three consecutive third unit times, the maximum value and the minimum value of the running frequency of the compressor in the three consecutive third unit times can be allowed to be within the standard frequency error range, and then it can be determined that the compressor is in a stable running state.

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

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

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

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

[0080] That is, if the compressor operating frequency of the compressor in three consecutive third unit times is h1, h2, h3, respectively, the average operating frequency in the 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 difference 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 difference, the absolute value of the difference needs to be processed, that is, only the size of the numerical part is compared.

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

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

[0084] Among them, according to the above method of judging whether the corresponding compressor frequency is in a stable state, the outdoor fan speeds v1, v2, v3 of the outdoor fan in three consecutive third unit times are obtained, the average speed in the three consecutive third unit times is v0=(v1+v2+v3) / 3, and the difference between each outdoor fan speed and the average speed w1=v1-v0, w2=v2-v0, w3=v3-v0 is calculated. If w1, w2, w3 are all less than the second standard difference 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 comparing the difference between the outdoor fan speed and the average speed with the second standard difference, the absolute value of the difference needs to be processed, that is, only the size of the numerical part is compared.

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

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

[0088] The method for determining whether the indoor fan is in a stable running state is consistent with the above-mentioned method for determining whether the outdoor fan is in a stable running state, and those skilled in the art can understand and implement the method for determining whether the indoor fan is in a stable running state according to the above description, and thus the description is not repeated here.

[0089] After it is determined that the running frequency of the compressor, the rotating speed of the outdoor fan and the rotating speed of the indoor fan are consistent in the same three continuous third unit times respectively, it is determined that the running frequency of the compressor, the rotating speed of the outdoor fan and the rotating speed of the indoor fan are consistent in at least three continuous third unit times.

[0090] That is, after it is determined that the running frequency of the compressor, the rotating speed of the outdoor fan and the rotating speed of the indoor fan are consistent in the same three continuous third unit times respectively, it is determined that the running frequency of the compressor, the rotating speed of the outdoor fan and the rotating speed of the indoor fan are consistent in at least three continuous third unit times.

[0091] In some embodiments, S300, it is determined whether the outdoor heat exchanger coil of the air conditioner starts to frost, comprising:

[0092] S310, when it is determined that the compressor, the outdoor fan and the indoor fan are all in a stable running state, an initial coil temperature of the outdoor heat exchanger coil is obtained, and a coil temperature difference between a current coil temperature and the initial coil temperature is obtained every fourth unit time.

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

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

[0095] The coil temperature difference = current coil temperature - initial coil temperature, if the coil temperature difference is less than the third threshold value, it means that the coil temperature decreases, and thus it can be determined that the outdoor heat exchanger coil starts to frost.

[0096] The third threshold value can be preset data in the controller, or can be 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 less than a first temperature, the air conditioner is controlled to start auxiliary heating.

[0099] The first temperature is a very low temperature preset in the controller in advance, and the auxiliary heating needs to be started immediately to ensure the heating effect of the air conditioner in a very low temperature environment when the outdoor temperature is less than the first temperature.

[0100] Generally, the first temperature is -7 DEG C.

[0101] S900, when the outdoor temperature is greater than the second temperature value, the air conditioner is controlled to close the auxiliary heating or keep the auxiliary heating closed.

[0102] The second temperature is a higher temperature preset in the controller in advance, and the air conditioner has a better heating effect without starting the auxiliary heating when the outdoor temperature is higher than the second temperature, so the auxiliary heating can be directly closed or kept closed when the outdoor temperature is greater than the second temperature.

[0103] Generally, the second temperature is 4 DEG C.

[0104] The first temperature is the lower limit value of the first preset range, and the second temperature is the 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 DEG C, 4 DEG C].

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

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

[0109] Generally, the third temperature is a set temperature or a human body comfortable stability stored in the controller.

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

[0111] In some embodiments, the present application also provides an air conditioner, which can comprise a processor 601 with one or more processing cores, a memory 602 with one or more computer readable storage media, a power supply 603 and an input unit 604, etc. Those skilled in the art can understand that the structure of the air conditioner described above does not constitute a limitation to the air conditioner, and the air conditioner can comprise more or fewer components, or combine certain components, or different component arrangements. Among them:

[0112] The processor 601 is a controller of the air conditioner, which connects various parts of the air conditioner through various interfaces and lines, executes software programs and / or modules stored in the memory 602 and calls data stored in the memory 602, performs various functions of the air conditioner and processes data, thereby monitoring the air conditioner as a whole. Optionally, the processor 601 can comprise one or more processing cores; preferably, the processor 601 can integrate an application processor 601 and a modem processor 601, wherein the application processor 601 mainly processes operating systems, user interfaces and computer programs, etc., and the modem processor 601 mainly processes wireless communication. It can be understood that the above-mentioned modem processor 601 can also not be integrated into the processor 601.

[0113] The memory 602 can be used to store software programs and modules, and the processor 601 executes various function applications and data processing by running the software programs and modules stored in the memory. The memory can mainly include a program storage area and a data storage area, wherein the program storage area can store an operating system, computer programs required by at least one function (such as a sound playing function, an image playing function, etc.), and the like; and the data storage area can store data created according to the use of the server, etc. In addition, the memory can include a high-speed random access memory, and can also include a non-volatile memory, such as at least one magnetic disk storage device, a flash memory device, or other volatile solid-state memory device. Accordingly, the memory can 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 various components. Preferably, the power supply 603 can be logically connected to the processor 601 through a power management system, so as to realize functions such as management of charging, discharging, and power consumption management through the power management system. The power supply can also include one or more than one direct current or alternating current power supply, a recharging system, a power failure detection circuit, a power converter or inverter, a power status indicator, and the like.

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

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

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

[0118] After the compressor, the outdoor fan and the indoor fan are all in a stable running state, it is determined whether the outdoor heat exchanger coil of the air conditioner starts to frost;

[0119] After it is determined that the outdoor heat exchanger coil starts to frost, it is determined whether the temperature rise amplitude of the indoor temperature in a first unit of time is less than or equal to a first threshold value;

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

[0121] The air conditioner can avoid that the auxiliary heating is started too early when the air conditioner still has the heating capacity without starting the auxiliary heating, and the electric energy is wasted unnecessarily.

[0122] Those skilled in the art can understand that all or part of the steps in any of the methods of the above embodiments can be completed by a computer program, or by a computer program controlling related hardware, the computer program can be stored in a computer readable storage medium and loaded and executed by the processor 601.

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

[0124] After the outdoor temperature is in the first preset range and the indoor temperature is in the second preset range, it is determined whether the compressor, the outdoor fan and the indoor fan of the air conditioner are in a stable running state;

[0125] After the compressor, the outdoor fan and the indoor fan are in the stable running state, it is determined whether the outdoor heat exchanger coil of the air conditioner starts to frost;

[0126] After it is determined that the outdoor heat exchanger coil starts to frost, it is determined whether the temperature rise amplitude of the indoor temperature in a first unit time is less than or equal to a first threshold value;

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

[0128] Through the above steps, after the air conditioner starts the heating mode, for the case that the indoor temperature is in the first preset range and the indoor temperature is in the second preset range, after it is determined that the compressor, the outdoor fan and the indoor fan of the air conditioner are in the stable running state, it is confirmed that the heating capacity of the air conditioner relying on the compressor has reached the limit, and after it is determined that the outdoor heat exchanger coil starts to frost, the auxiliary heating is started in time according to the change of the indoor temperature, which can avoid that the auxiliary heating is started too early when the air conditioner still has the heating capacity without starting the auxiliary heating, and the electric energy is wasted unnecessarily.

[0129] As will be appreciated by one of ordinary skill in the art, any reference to storage, storage media, a database or other medium can include a non-transitory and / or transitory storage medium. Non-limiting examples of non-transitory and / or transitory storage media include Read Only Memory (ROM), Programmable ROM (PROM), Erasable Programmable ROM (EPROM), Electrically Erasable Programmable ROM (EEPROM), or flash memory. A transitory medium can also include a register, a cache, or a buffer. As an illustration and not a limitation, a register, cache, or buffer can be a portion of a random access memory (RAM). As an illustration and not a limitation, a RAM can include Static RAM (SRAM), Dynamic RAM (DRAM), or synchronous DRAM (SDRAM). As an illustration and not a limitation, a RAM can include a Double Data Rate SDRAM (DDR SDRAM), Enhanced SDRAM (ESDRAM), Synchlink DRAM (SLDRAM), Rambus Direct RAM (RDRAM), Rambus Dynamic RAM (RDRAM), and / or others.

[0130] The steps in the air conditioner control method of any of the embodiments provided by the present application can be executed by the computer program stored in the storage medium, and thus the beneficial effects of the air conditioner control method of any of the embodiments provided by the present application can be achieved. Details are described above, and thus will not be repeated here.

[0131] The specific implementation of each operation can refer to the above embodiments, and thus will not be repeated here.

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

[0133] The above is only optional embodiments of the present application, and thus does not limit the patent scope of the present application. Any equivalent structural transformation, direct / indirect application in other related technical fields, or the like made by using the content of the present application specification and drawings are included in the patent protection scope of the present application.

Claims

1. A control method for controlling an air conditioner after it has been switched to heating mode, characterized in that, The control method includes: After the outdoor temperature is within the first preset range and the indoor temperature is within the second preset range, determine whether the air conditioner's compressor, outdoor fan, and indoor fan are all in a stable operating state. After the compressor, the outdoor fan, and the indoor fan are all in a stable operating state, determine whether the outdoor heat exchanger coil of the air conditioner has started to frost. When it is determined that the outdoor heat exchanger coil begins to frost, it is determined whether the temperature rise of the indoor temperature within a first unit time is less than or equal to a first threshold. When the temperature rise is determined to be less than or equal to a first threshold, the air conditioner is controlled to turn on auxiliary heating.

2. The control method according to claim 1, characterized in that, The control method further includes: When it is determined that the temperature rise is greater than the first threshold, it is determined whether the rate of temperature rise of the indoor temperature within the second unit time is less than the second threshold. When the rate of temperature rise is determined to be less than a second threshold, the air conditioner is controlled to turn on auxiliary heating.

3. The control method according to claim 1, characterized in that, Determining whether the compressor, outdoor fan, and indoor fan of the air conditioner are all in a stable operating state includes: After the air conditioner enters the heating mode for a preset time, determine whether the operating frequency of the compressor, the speed of the outdoor fan, and the speed of the indoor fan are consistent for at least three consecutive third time units. After determining that the operating frequency of the compressor, the speed of the outdoor fan, and the speed of the indoor fan are consistent for at least three consecutive third time units, 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 3, characterized in that, 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 time periods includes: The average operating frequency of the compressor is obtained over three consecutive third unit time periods. If the difference between the operating frequency of the compressor and the average operating frequency in each third unit time period is less than the first standard deviation, then it is determined that the operating frequency of the compressor remains consistent for at least three consecutive third unit time periods. The first average rotational speed of the outdoor fan is obtained over three consecutive third unit time periods. If the difference between the rotational speed of the outdoor fan and the first average rotational speed in each third unit time period is less than the second standard deviation, it is determined that the rotational speed of the outdoor fan has remained consistent for at least three consecutive third unit time periods. The second average rotational speed of the indoor fan is obtained over three consecutive third unit time periods. If the difference between the rotational speed of the indoor fan and the second average rotational speed in each third unit time period is less than the third standard deviation, it is determined that the indoor fan has remained consistent for at least three consecutive third unit time periods. After determining that the operating frequency of the compressor, the speed of the outdoor fan, and the speed of the indoor fan remain consistent for three consecutive third time units, it is determined that 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 time units.

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

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

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

8. A control device, characterized in that, include: The acquisition module is 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 of the indoor temperature within a first unit time after determining that the outdoor heat exchanger coil has started to frost. The judgment module 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 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 has started to frost after the compressor, outdoor fan, and 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 turn on auxiliary heating after determining that the temperature rise is less than or equal to a first threshold.

9. An air conditioner, characterized in that, The method includes a memory and a processor, the memory storing a computer program and the processor running the computer program in the memory to perform the steps of the control method according to any one of claims 1-7.

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

Images