Control method and control device of air conditioner, air conditioner and storage medium

Abstract

The application discloses a control method and device of an air conditioner, the air conditioner and a storage medium, and belongs to the technical field of air conditioners. The air conditioner is internally provided with at least one first heating unit and at least one second heating unit. The control method of the air conditioner comprises the following steps: when a heating mode operation instruction of the air conditioner is received, a compressor, an outdoor fan, an indoor fan and at least part of the first heating unit of the air conditioner are controlled to start operation; the operation rotating speed of the indoor fan is acquired; it is judged whether the operation rotating speed reaches a first preset rotating speed; if the first preset rotating speed is reached, at least part of the second heating unit is controlled to start operation. The application can reduce the influence of the operation of the heating unit on the normal operation of the internal parts of the air conditioner in the initial stage of the start of the heating operation of the air conditioner, so that the purpose of fast and strong heating in the initial stage of heating is achieved.

Description

Technical Field

[0001] This invention relates to the field of air conditioning technology, and more particularly to control methods, control devices, air conditioners, and storage media for air conditioners. Background Technology

[0002] In related technologies, when an air conditioner starts operating in heating mode, additional hot air is provided through heating units such as electric auxiliary heating to meet the need for preventing cold air.

[0003] However, in the initial stage of operation in heating mode, when the electric auxiliary heating is turned on, the normal operation of the internal components of the air conditioner is easily affected because the heat source temperature of the electric auxiliary heating is too high.

[0004] The above content is only used to help understand the technical solution of the present invention and does not represent an admission that the above content is prior art. Summary of the Invention

[0005] The main objective of this invention is to provide a control method, control device, air conditioner, and storage medium for an air conditioner, aiming to solve the technical problem that the normal operation of internal components of the air conditioner is affected when the electric auxiliary heating is running in the initial stage of heating mode operation.

[0006] To achieve the above objectives, the present invention provides a control method for an air conditioner, wherein the air conditioner is provided with at least one first heating unit and at least one second heating unit;

[0007] The method includes:

[0008] Upon receiving a command to operate the air conditioner in heating mode, the compressor, outdoor fan, indoor fan, and at least part of the first heating unit of the air conditioner are controlled to start operating;

[0009] Obtain the operating speed of the indoor fan;

[0010] Determine whether the operating speed has reached the first preset speed;

[0011] If the first preset rotation speed is reached, then at least a portion of the second heating unit is controlled to start operating.

[0012] In one embodiment, before controlling the compressor, outdoor fan, indoor fan, and at least a portion of the first heating unit of the air conditioner to start operating upon receiving a command to operate the air conditioner in heating mode, the method further includes:

[0013] Obtain the outdoor ambient temperature;

[0014] Determine whether the outdoor ambient temperature is less than or equal to a third preset temperature threshold;

[0015] If the outdoor ambient temperature is less than or equal to the third preset temperature threshold, then the following steps are performed: upon receiving an instruction to operate the air conditioner in heating mode, the compressor, outdoor fan, indoor fan, and at least part of the first heating unit of the air conditioner are controlled to start operating.

[0016] In one embodiment, if the outdoor ambient temperature is greater than the third preset temperature threshold, the following step is performed: before controlling the compressor, outdoor fan, indoor fan, and at least part of the first heating unit of the air conditioner to start operating when a command to operate the heating mode of the air conditioner is received, the method further includes:

[0017] Obtain the real-time indoor temperature;

[0018] Determine whether the difference between the real-time indoor temperature and the outdoor ambient temperature is less than or equal to a preset difference;

[0019] If the difference between the third indoor real-time temperature and the outdoor ambient temperature is less than or equal to a preset difference, then after the method controls at least some of the second heating units to start operating when the first preset rotation speed is reached, the method further includes:

[0020] The system acquires the first real-time indoor temperature, the first real-time indoor heat exchanger temperature, the first operating speed of the indoor fan, and the first operating frequency of the compressor.

[0021] If the first indoor real-time temperature is less than or equal to the first preset temperature threshold, the first indoor heat exchanger real-time temperature is greater than or equal to the second preset temperature threshold, the first operating speed is equal to the maximum allowable speed, and the first operating frequency is equal to the maximum allowable operating frequency, then the compressor is controlled to increase its frequency, and the indoor fan speed is controlled to increase.

[0022] In one embodiment, after controlling the compressor to increase its frequency and the indoor fan speed to increase its speed if the first indoor real-time temperature is less than or equal to a first preset temperature threshold, the first indoor heat exchanger real-time temperature is greater than or equal to a second preset temperature threshold, the first operating speed is equal to the maximum allowable speed, and the first operating frequency is equal to the maximum allowable operating frequency, the method further includes:

[0023] Obtain the real-time operating parameters of the air conditioner;

[0024] Determine whether the real-time operating parameters meet the preset conditions for stopping heating;

[0025] If the preset conditions for stopping heating are met, then control at least a portion of the second heating units to stop operating;

[0026] After at least part of the second heating unit stops operating, the real-time temperature of the second indoor heat exchanger of the indoor heat exchanger is obtained;

[0027] If the real-time temperature of the second indoor heat exchanger is greater than or equal to the second preset temperature threshold, then control at least a portion of the first heating units to stop operating.

[0028] In one embodiment, after determining whether the difference between the third indoor real-time temperature and the outdoor ambient temperature is less than or equal to a preset difference, the method further includes:

[0029] If the difference between the third indoor real-time temperature and the outdoor ambient temperature is greater than a preset difference, then after the method controls at least some of the second heating units to start operating when the first preset rotation speed is reached, the method further includes:

[0030] Obtain the real-time operating parameters of the air conditioner;

[0031] Determine whether the real-time operating parameters meet the preset conditions for stopping heating;

[0032] If the preset conditions for stopping heating are met, control at least a portion of the second heating units to stop operating;

[0033] After at least part of the second heating unit stops operating, the real-time temperature of the second indoor heat exchanger of the indoor heat exchanger is obtained;

[0034] If the real-time temperature of the second indoor heat exchanger is greater than or equal to the second preset temperature threshold, then control at least a portion of the first heating units to stop operating.

[0035] In one embodiment, the real-time operating parameters include the second indoor real-time temperature and / or the heating unit current;

[0036] The preset condition for stopping heating is:

[0037] The current of the heating unit is greater than or equal to a preset current threshold.

[0038] The second indoor real-time temperature is greater than or equal to the third preset temperature threshold; or

[0039] The current of the heating unit is greater than or equal to a preset current threshold, and the real-time indoor temperature is greater than or equal to a third preset temperature threshold.

[0040] In a second aspect, the present invention also provides a control device for an air conditioner, comprising:

[0041] The first startup module is used to control the compressor, outdoor fan, indoor fan and at least part of the first heating unit of the air conditioner to start running when it receives a command to operate the heating mode of the air conditioner;

[0042] The speed acquisition module is used to acquire the operating speed of the indoor fan;

[0043] The speed determination module is used to determine whether the operating speed of the indoor fan has reached the first preset speed;

[0044] The second startup module is used to control at least a portion of the second heating unit to start running if the first preset speed is reached.

[0045] Thirdly, the present invention also provides an air conditioner, comprising:

[0046] case;

[0047] At least one first heating unit and at least one second heating unit, wherein both the first heating unit and the second heating unit are disposed within the housing;

[0048] Such as the control device of the air conditioner mentioned above.

[0049] In one embodiment, at least one first heating unit and at least one second heating unit are staggered along the axial direction of the indoor fan of the air conditioner and spaced apart from each other.

[0050] Fourthly, the present invention also provides a computer-readable storage medium storing a control program for an air conditioner, wherein the control program for the air conditioner, when executed by a processor, performs the control method for the air conditioner as described above.

[0051] This invention provides a control method for an air conditioner. This control method controls the indoor fan and at least part of the first heating unit to start operating when the compressor starts, and then controls at least part of the second heating unit to start operating after the indoor fan speed increases to a first preset speed. In this way, during the initial stage of the air conditioner's heating operation, the method aims to achieve rapid and strong heating in the early stage of heating while reducing the impact of the heating unit operation on the normal operation of the air conditioner's internal components. Attached Figure Description

[0052] Figure 1 This is a flowchart illustrating the first embodiment of the control method for an air conditioner according to the present invention;

[0053] Figure 2 This is a flowchart illustrating the second embodiment of the control method for an air conditioner according to the present invention;

[0054] Figure 3This is a flowchart illustrating the third embodiment of the control method for an air conditioner according to the present invention;

[0055] Figure 4 This is a schematic diagram of the functional modules of the control device of the air conditioner of the present invention;

[0056] Figure 5 This is a schematic diagram showing the arrangement of the heating unit in an embodiment of the air conditioner of the present invention.

[0057] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0058] It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0059] When an air conditioner is turned on for heating, the indoor fan does not start immediately to prevent cold air from blowing out. It only starts running and blowing out hot air once the temperature of the indoor heat exchanger reaches a set threshold. To address this, related technologies add an electric auxiliary heating unit at the air outlet. However, the air blown from the indoor unit is only around 45°C, while the electric auxiliary heating source can reach temperatures of over 100°C. This causes severe overheating around the auxiliary heating unit. Furthermore, in the initial heating phase, the indoor fan operates at a low speed and cannot effectively dissipate heat through airflow, thus affecting the normal operation of other components within the air conditioner.

[0060] Therefore, embodiments of the present invention provide a control method for an air conditioner. This control method controls the indoor fan and at least part of the first heating unit to start operating when the compressor starts, and then controls at least part of the second heating unit to start operating after the indoor fan speed increases. In this way, during the initial stage of the air conditioner's heating operation, the goal of achieving rapid and strong heating in the initial stage of heating is achieved, while reducing the impact of the heating unit's operation on the normal operation of the air conditioner's internal components.

[0061] The inventive concept of this application is further illustrated below with reference to some specific embodiments.

[0062] This invention provides a first embodiment of a control method for an air conditioner. (See attached document.) Figure 1 , Figure 1 A flowchart illustrating the first embodiment of the control method for this air conditioner is shown.

[0063] In this embodiment, the method includes:

[0064] Step S101: Upon receiving a command to operate the air conditioner in heating mode, control the air conditioner's compressor, outdoor fan, indoor fan, and at least part of the first heating unit to start operating.

[0065] Users can input heating mode operation commands through the human-machine interface provided by the air conditioner, the air conditioner's remote control, or a smart terminal that communicates with the air conditioner. When the air conditioner receives the heating mode operation command, it will control the air conditioner to start operating in heating mode.

[0066] It is understandable that when an air conditioner is turned on in heating mode, the compressor and outdoor fan start. Furthermore, those skilled in the art know that after the compressor and outdoor fan start, the compressor frequency gradually increases, such as to the current maximum permissible frequency, and the outdoor fan speed also gradually increases, such as to the speed set by the user. This will not be elaborated further in this embodiment.

[0067] In this step, upon receiving a command to operate the air conditioner in heating mode, the indoor fan and at least a portion of the first heating unit 307a are also controlled to start operating. This is not done by waiting for the indoor heat exchanger to reach a set threshold temperature after the unit has been running for a period of time. At least a portion of the first heating unit 307a starts operating, heating the air inside the air conditioner casing, and the indoor fan begins operating, delivering the heated air into the room.

[0068] Step S102: Obtain the operating speed of the indoor fan;

[0069] Step S103: Determine whether the operating speed has reached the first preset speed.

[0070] Step S104: If the first preset speed is reached, control at least part of the second heating unit 307b to start running.

[0071] The first preset speed is the speed required for the indoor fan to fully and promptly deliver the heated air from inside the air conditioner to the indoor environment. For example, the first preset speed is 60% or 80% of the speed setting, or 700 rpm.

[0072] When the indoor fan can fully remove the heat generated by at least part of the first heating unit 307a, at least part of the second heating unit 307b can also be controlled to start running, so that multiple heating units can operate at full power or at a higher power, and achieve rapid and strong hot air output during the start-up phase by means of high-power electric heating.

[0073] In this embodiment, by simultaneously controlling a portion of the multiple heating units (at least some of the first heating units 307a) to start operating when the compressor starts, and then controlling another portion of the multiple heating units (at least some of the second heating units 307b) to start operating after the fan speed increases, the impact of the heating units operating on the normal operation of the air conditioner's internal components is reduced during the initial heating stage of the air conditioner, while achieving the goal of rapid and powerful heating in the initial heating phase. This further improves the service life and reliability of the air conditioner.

[0074] Furthermore, based on the first embodiment of the control method for the air conditioner of the present invention, a second embodiment of the control method for the air conditioner of the present invention is proposed. See also... Figure 2 , Figure 2 A flowchart illustrating a second embodiment of the control method for an air conditioner according to the present invention is shown.

[0075] In this embodiment, the method includes:

[0076] Step S201: Upon receiving a command to operate the air conditioner in heating mode, control the air conditioner's compressor, outdoor fan, indoor fan, and at least part of the first heating unit 307a to start operating.

[0077] Step S202: Obtain the operating speed of the indoor fan;

[0078] Step S203: Determine whether the operating speed has reached the first preset speed.

[0079] Step S204: If the first preset speed is reached, control at least part of the second heating unit 307b to start running.

[0080] Step S205: Obtain the first indoor real-time temperature, the first indoor heat exchanger real-time temperature, the first operating speed of the indoor fan, and the first operating frequency of the compressor.

[0081] Step S206: If the real-time indoor temperature is less than or equal to the first preset temperature threshold, the real-time temperature of the first indoor heat exchanger is greater than or equal to the second preset temperature threshold, the first operating speed is equal to the maximum allowable speed, and the first operating frequency is equal to the maximum allowable operating frequency, then control the compressor to increase its frequency and control the indoor fan speed to increase.

[0082] It's easy to understand that prolonged periods without heating in winter result in low wall temperatures. When the air conditioner is running, some of the heat is used to heat the walls, leading to a slow rise in room temperature. Therefore, in this embodiment, to increase the rate of room temperature rise, the compressor can be controlled to operate beyond its maximum allowable operating frequency. This increases the heating rate of the inverter air conditioner during the initial heating phase, thereby increasing the rate of temperature rise in the indoor environment and enabling the indoor temperature to reach the set temperature more quickly, thus further improving the user experience.

[0083] Specifically, the first indoor real-time temperature is T1a, the first indoor heat exchanger real-time temperature is T2a, the first operating speed of the indoor fan is P, and the first operating frequency of the compressor is F. Determine whether the parameters obtained in step S202 satisfy the following conditions:

[0084] P = Pmax, T1a ≤ T1s1, T2a ≥ T2s2, and F = Fmax. Where P = Pmax means the indoor fan's first operating speed reaches its maximum permissible speed. F = Fmax means the compressor's first operating frequency reaches its current maximum permissible operating frequency. The value of T2s2 ranges from 20 to 50℃, with 45℃ being an optional value. The value of T1s1 ranges from 0 to 15℃, with 10℃ being an optional value.

[0085] When the indoor fan reaches its maximum permissible speed and the compressor reaches its current maximum permissible operating frequency, T2a ≥ T2s2, indicating that the indoor heat exchanger temperature should reach the required heating temperature. If T1a ≤ T1s1 at this point, it means the indoor environment has not fully absorbed heat, resulting in ineffective heating of the indoor air. This means that some or most of the heat generated by the air conditioner's heating mode is used to heat the walls, thus reducing the rate of temperature increase in the indoor air. In this situation, the compressor frequency can be increased, starting at the maximum permissible operating frequency and increasing by ΔF (e.g., 10Hz) each time. This temporarily controls the compressor to operate above the maximum permissible operating frequency, improving the heating rate of the air conditioner during the initial heating phase.

[0086] At this time, the speed of the indoor fan can be controlled to continue to increase. For example, the speed can be increased by ΔP on the basis of the maximum allowable speed, which can be 100 revolutions. That is, it can be temporarily operated beyond the maximum allowable speed to increase the rate at which heat is transferred to the indoor environment.

[0087] In this embodiment, by controlling the compressor to temporarily operate above the maximum allowable operating frequency and controlling the indoor fan to temporarily exceed the maximum allowable speed, the heating rate of the air conditioner in the initial stage of heating and the rate of heat delivery to the indoor environment are improved when some of the heat generated by the air conditioner is used to heat the wall.

[0088] As an example, based on the first embodiment of the control method for the air conditioner of the present invention, a third embodiment of the control method for the air conditioner of the present invention is proposed. See reference. Figure 3 , Figure 3 A flowchart illustrating a third embodiment of the control method for an air conditioner according to the present invention is shown.

[0089] In this embodiment, the method includes the following steps:

[0090] Step S301: Obtain the outdoor ambient temperature.

[0091] Step S302: Determine whether the outdoor ambient temperature is less than or equal to the third preset temperature threshold.

[0092] If the outdoor ambient temperature is less than or equal to the third preset temperature threshold, then step S303 is executed: when a command to operate the air conditioner in heating mode is received, the compressor, outdoor fan, indoor fan and at least part of the first heating unit 307a of the air conditioner are controlled to start running.

[0093] When T4 ≤ T4s, the outdoor ambient temperature is low, and the heating unit steps provided in the above-described method embodiment can be used for heating. The specific steps of step S303 can be found in step S104 of the above embodiment, and will not be repeated here. This achieves rapid and powerful heating in the initial stage of heating.

[0094] Step S304: If the outdoor ambient temperature is less than or equal to the third preset temperature threshold, the compressor and outdoor fan will start running.

[0095] Step S305: Obtain the real-time temperature of the third indoor heat exchanger.

[0096] Step S306: When the real-time temperature of the third indoor heat exchanger is greater than or equal to the fourth preset temperature threshold, control the indoor fan to start running.

[0097] In this embodiment, the outdoor ambient temperature is T4, the third preset temperature threshold is T4s, and it is determined whether T4≤T4s is true. The value range of T4s is -5~10℃, and it can be 0℃.

[0098] If T4≤T4s is not met, the outdoor temperature is high, so the conventional anti-cold wind mode can be used instead of using the heating unit to reduce energy consumption.

[0099] At this point, the compressor and outdoor fan can be controlled to start operating. After heating begins, the temperature of the indoor heat exchanger starts to rise. When the monitored real-time temperature T2C of the indoor heat exchanger reaches the fourth preset temperature threshold T2s1, the indoor fan is controlled to start. The value of T2s1 ranges from 15 to 30°C, and can be selected as 28°C. This means that in this embodiment, the conventional anti-cold air mode is used.

[0100] Step S307: Obtain the real-time temperature of the fourth indoor unit, the real-time temperature of the fourth indoor heat exchanger, the second operating speed of the indoor fan, and the second operating frequency of the compressor.

[0101] Step S308: If the real-time temperature of the fourth indoor unit is less than or equal to the first preset temperature threshold, the real-time temperature of the fourth indoor heat exchanger is greater than or equal to the second preset temperature threshold, the second operating speed is equal to the maximum allowable speed, and the second operating frequency is equal to the maximum allowable operating frequency, then control the compressor to operate at a higher frequency and control the indoor fan speed to increase.

[0102] Steps S307 and S308 can be referred to the above embodiments, and will not be repeated here.

[0103] In this embodiment, by controlling the compressor to temporarily operate above the maximum allowable operating frequency and controlling the indoor fan to temporarily exceed the maximum allowable speed, the heating rate of the air conditioner in the initial stage of heating and the rate of heat delivery to the indoor environment are improved when some of the heat generated by the air conditioner is used to heat the wall.

[0104] Step S309: After the indoor fan has been running at the increased speed for a preset time, control the indoor fan to run at the user-set speed and control the compressor to run at the maximum allowable operating frequency.

[0105] Specifically, after the indoor fan is tested at a preset operating time t based on the speed Pmax + ΔP, the indoor fan operates at the user-set speed, and the compressor frequency operates at the current allowable Fmax. The preset time t ranges from 5 to 20 minutes, with a selectable value of 10 minutes.

[0106] In this step, the preset duration t is the temperature expected to be reached when the cold walls are heated to match the real-time indoor air temperature. Therefore, the temporary operation of the compressor exceeding its maximum permissible operating frequency and the temporary operation of the indoor fan exceeding its maximum permissible speed will end here. The preset duration t can be set according to specific circumstances and is not limited here.

[0107] In this embodiment, different operating modes are used under different environmental conditions, all of which can achieve rapid and powerful heating in the initial stage of heating and reduce the energy consumption of the air conditioner.

[0108] As an example, based on the above embodiments of the control method for the air conditioner of the present invention, a fourth embodiment of the control method for the air conditioner of the present invention is proposed.

[0109] In this embodiment, the method includes the following steps:

[0110] Step S401: Obtain the outdoor ambient temperature and the third indoor real-time temperature.

[0111] Step S402: Determine whether the outdoor ambient temperature is less than or equal to the third preset temperature threshold.

[0112] Step S403: If the outdoor ambient temperature is less than or equal to the third preset temperature threshold, then determine whether the difference between the third real-time indoor temperature and the outdoor ambient temperature is less than or equal to the preset difference.

[0113] If the difference between the third indoor real-time temperature and the outdoor ambient temperature is less than or equal to a preset difference, then step 404 is executed: when a command to operate the air conditioner in heating mode is received, the compressor, outdoor fan, indoor fan and at least part of the first heating unit 307a of the air conditioner are controlled to start running.

[0114] Step S405: Obtain the operating speed of the indoor fan.

[0115] Step S406: Determine whether the operating speed has reached the first preset speed.

[0116] Step S407: If the first preset speed is reached, control at least part of the second heating unit 307b to start running.

[0117] Step S408: Obtain the first indoor real-time temperature, the first indoor heat exchanger real-time temperature, the first operating speed of the indoor fan, and the first operating frequency of the compressor.

[0118] Step S409: If the real-time temperature of the third indoor unit is less than or equal to the first preset temperature threshold, the real-time temperature of the indoor heat exchanger is greater than or equal to the second preset temperature threshold, the first operating speed is equal to the maximum allowable speed, and the first operating frequency is equal to the maximum allowable operating frequency, then control the compressor to increase its frequency and control the indoor fan speed to increase.

[0119] In this embodiment, the preset difference ΔT ranges from 0 to 10℃, and can be selected as 5℃. The third real-time indoor temperature is T1c. If T1c-T4≤ΔT holds true, the indoor and outdoor ambient temperatures are relatively close, meaning that the indoor and outdoor ambient temperatures are similar due to prolonged lack of heating. This also means that the wall temperature is low, so some of the heat generated by the air conditioner needs to be used to heat the walls, affecting the rate of temperature rise of the indoor air. Therefore, the compressor can be temporarily operated above the maximum allowable operating frequency, and the indoor fan can be temporarily operated above the maximum allowable speed. This improves the heating rate of the air conditioner in the initial stage of heating and the rate of heat transfer to the indoor environment when some of the heat generated by the air conditioner is used to heat the walls.

[0120] In this embodiment, different rapid heating methods are adopted based on the indoor and outdoor environments to better achieve rapid and powerful heating in the initial stage of heating.

[0121] In one specific implementation, when the air conditioner receives a heating mode operation command, it first detects the third real-time indoor temperature T1c and the outdoor ambient temperature T4, and determines whether the outdoor ambient temperature T4 is less than or equal to T4s. If the condition is not met, it operates according to preset mode one for heating, i.e., as in steps S301 to S308 of the fourth embodiment of the method described above. If the condition is met, the outdoor temperature is low, and a heating unit is needed to achieve rapid heating. At this time, it can also be determined whether T1c-T4≤△T is true. If it is true, it operates according to preset mode three, i.e., according to the steps of the fifth embodiment of the method described above. If T1b-T4≤△T is not true, it operates according to preset mode two, i.e., according to the first embodiment of the method described above.

[0122] Step S410: Obtain the real-time operating parameters of the air conditioner.

[0123] Step S411: Determine whether the real-time operating parameters meet the preset conditions for stopping heating.

[0124] Specifically, the real-time operating parameters may include the second indoor real-time temperature and / or the heating unit current.

[0125] The preset condition for stopping heating is any one of the following conditions:

[0126] (1) The current of the heating unit is greater than or equal to a preset current threshold;

[0127] (2) The second indoor real-time temperature is greater than or equal to the third preset temperature threshold; or

[0128] (3) The current of the heating unit is greater than or equal to a preset current threshold, and the real-time indoor temperature is greater than or equal to a third preset temperature threshold.

[0129] Step S412: If the preset conditions for stopping heating are met, then control at least part of the second heating unit to stop operating.

[0130] Step S413: After at least part of the second heating unit stops operating, obtain the real-time temperature of the second indoor heat exchanger of the indoor heat exchanger.

[0131] Step S414: If the real-time temperature of the second indoor heat exchanger is greater than or equal to the second preset temperature threshold, then control at least part of the first heating units to stop operating.

[0132] In this embodiment, the heating unit current is the current generated by the multiple heating units themselves during operation. When the multiple heating units are generating heat, the heating unit current can be detected. When the heating unit current is greater than or equal to a preset current threshold, i.e., I ≥ Is, where the preset current threshold Is can be selected as 15A, to prevent the heating units from burning out due to operating at full power, at least some of the second heating units 307b can be controlled to stop operating when I ≥ Is is satisfied. This reduces the overall power output of the multiple heating units.

[0133] Alternatively, it can be understood that the heating unit has a very poor heating efficiency, only 1 / 3 to 1 / 4 of that of an air conditioner. After multiple heating units have been operating at full power for a period of time, the indoor real-time temperature has risen to a certain level. When the second indoor real-time temperature T1b ≥ T1s2, the third preset temperature threshold T1s2 ranges from 5 to 20℃, with 15℃ being an optional value. That is, the air conditioner has passed the initial heating stage. To reduce the energy consumption of the air conditioner, at least some of the second heating units 307b can be controlled to stop operating.

[0134] Understandably, at this time, at least some of the first heating units 307a can also be controlled to stop operating, but this embodiment does not limit this.

[0135] In this embodiment, after the heating unit operates at full or high power for a period of time, some of the multiple heating units can be controlled to stop operating, thereby reducing the energy consumption of the air conditioner.

[0136] In this system, some heating units among multiple heating units cease operation, while the remaining heating units, namely at least some of the first heating units and / or the remaining second heating units, continue heating. If the real-time temperature T2b of the second indoor heat exchanger satisfies T2b≥T2S2, meaning the real-time temperature of the indoor heat exchanger has risen to a level sufficient for heating, the air conditioner has passed the initial start-up phase. Therefore, the remaining at least some of the first heating units 307a and / or all of the remaining second heating units can be controlled to stop operating, thereby reducing energy consumption.

[0137] In this embodiment, the heating unit achieves rapid and powerful heating in the initial stage of heating, and after this stage, multiple heating units are controlled to stop heating in stages to reduce energy consumption.

[0138] Furthermore, in this embodiment, since the heating unit's temperature is significantly higher than the indoor heat exchanger's temperature of approximately 45°C, the air blown out by the air conditioner will be relatively dry, affecting the user experience. Therefore, under the condition that heating meets the above requirements, by controlling multiple heating units to stop working in stages, the dry air generated by the heating units can be prevented from affecting the user experience without affecting the rapid and powerful heating.

[0139] Furthermore, based on the above embodiments of the control method for the air conditioner of the present invention, a fourth embodiment of the control method for the air conditioner of the present invention is proposed.

[0140] In this embodiment, the method includes:

[0141] Step S501: Obtain the outdoor ambient temperature and the third indoor real-time temperature.

[0142] Step S502: Determine whether the outdoor ambient temperature is less than or equal to the third preset temperature threshold.

[0143] Step S503: If the outdoor ambient temperature is less than or equal to the third preset temperature threshold, then determine whether the difference between the third indoor real-time temperature and the outdoor ambient temperature is less than or equal to the preset difference.

[0144] If the difference between the third indoor real-time temperature and the outdoor ambient temperature is greater than a preset difference, then step S504 is executed: when a command to operate the air conditioner in heating mode is received, the compressor, outdoor fan, indoor fan and at least part of the first heating unit 307a of the air conditioner are controlled to start running.

[0145] Step S505: Obtain the operating speed of the indoor fan.

[0146] Step S506: Determine whether the operating speed has reached the first preset speed.

[0147] Step S507: If the first preset speed is reached, control at least part of the second heating unit 307b to start running.

[0148] Step S508: Obtain the real-time operating parameters of the air conditioner.

[0149] Step S509: Determine whether the real-time operating parameters meet the preset conditions for stopping heating.

[0150] Specifically, the real-time operating parameters may include a second indoor real-time temperature and / or a preset current threshold.

[0151] The preset condition for stopping heating is any one of the following conditions:

[0152] (1) The current of the heating unit is greater than or equal to a preset current threshold;

[0153] (2) The second indoor real-time temperature is greater than or equal to the third preset temperature threshold; or

[0154] (3) The current of the heating unit is greater than or equal to a preset current threshold, and the real-time indoor temperature is greater than or equal to a third preset temperature threshold.

[0155] Step S510: If the preset conditions for stopping heating are met, then control at least part of the second heating unit to stop operating.

[0156] Step S511: After at least part of the second heating unit stops operating, obtain the real-time temperature of the second indoor heat exchanger of the indoor heat exchanger.

[0157] Step S512: If the real-time temperature of the second indoor heat exchanger is greater than or equal to the second preset temperature threshold, control at least part of the first heating unit to stop operating.

[0158] In this embodiment, if the difference between the third indoor real-time temperature and the outdoor ambient temperature is greater than a preset difference, the indoor real-time temperature is higher. In this case, the steps S408 and S409 of the previous embodiment are not required to reduce the energy consumption of the air conditioner.

[0159] The remaining steps of this embodiment can be referred to the above embodiments, and will not be repeated here.

[0160] In addition, see Figure 4 The present invention provides a control device for an air conditioner.

[0161] In this embodiment, the control device for the air conditioner includes:

[0162] The first startup module 10 is used to control the compressor, outdoor fan, indoor fan and at least part of the first heating unit of the air conditioner to start running when it receives a command to run the heating mode of the air conditioner;

[0163] The speed acquisition module 20 is used to acquire the operating speed of the indoor fan;

[0164] The speed determination module 30 is used to determine whether the operating speed of the indoor fan has reached the first preset speed;

[0165] The second startup module 40 is used to control at least a portion of the second heating unit to start running if the first preset speed is reached.

[0166] In this embodiment, by simultaneously controlling a portion of the multiple heating units (at least some of the first heating units 307a) to start operating when the compressor starts, and then controlling another portion of the multiple heating units (at least some of the second heating units 307b) to start operating after the fan speed increases, the impact of the heating units operating on the normal operation of the air conditioner's internal components is reduced during the initial heating stage of the air conditioner, while achieving the goal of rapid and powerful heating in the initial heating phase. This further improves the service life and reliability of the air conditioner.

[0167] Other embodiments or specific implementations of the control device for the air conditioner of the present invention can be referred to the above-described method embodiments, and will not be repeated here.

[0168] In addition, the present invention also provides an air conditioner.

[0169] The air conditioner includes a housing. The air conditioner contains at least one first heating unit 307a and at least one second heating unit 307b.

[0170] For example, multiple heating units are installed at the air outlet or downstream of the indoor fan to heat the airflow passing through the air outlet, thereby increasing the temperature of the airflow after it passes through the air outlet. At least one first heating unit and at least one second heating unit 307b can be controlled separately, such as controlling the operation of one or more of the first heating units, controlling the operation of one or more of the second heating units, or controlling all heating units of at least some of the first heating units and at least some of the second heating units to start operating simultaneously.

[0171] It should be noted that the number of at least one first heating unit 307a and at least one second heating unit 307b is not limited. Therefore, the power configuration of at least some of the first heating units and at least some of the second heating units 307b is not limited. In one embodiment, at least some of the first heating units and at least some of the second heating units 307b are configured with equal power.

[0172] In some embodiments, at least one first heating unit 307a and at least one second heating unit 307b are staggered along the axial direction of the indoor fan of the air conditioner and spaced apart from each other.

[0173] See Figure 5 Multiple heating units are spaced apart from each other along the axial direction of the indoor fan. These heating units are arranged in a row along the axial direction of the indoor fan, sequentially starting from either end of the axial direction of the indoor fan. In this arrangement, the odd-numbered heating units are designated as the first heating unit 307a, and the even-numbered heating units are designated as the second heating unit 307b.

[0174] Thus, when at least a portion of the first heating unit 307a or at least a portion of the second heating unit 307b is controlled to operate independently, the air outlet is heated more evenly.

[0175] Furthermore, embodiments of the present invention also propose a computer-readable storage medium storing a control program for an air conditioner. When executed by a processor, the control program implements the steps of the air conditioner control method described above. Therefore, further details will not be repeated here. Additionally, the beneficial effects of using the same method will not be repeated. For technical details not disclosed in the embodiments of the computer-readable storage medium involved in this application, please refer to the description of the method embodiments of this application. As an example, program instructions can be deployed to execute on a single computing device, or on multiple computing devices located at one location, or on multiple computing devices distributed across multiple locations and interconnected via a communication network.

[0176] Those skilled in the art will understand that all or part of the processes in the above embodiments can be implemented by a computer program instructing related hardware. The program can be stored in a computer-readable storage medium, and when executed, it can include the processes of the embodiments of the above methods. The storage medium can be a magnetic disk, optical disk, read-only memory (ROM), or random access memory (RAM), etc.

[0177] Through the above description of the embodiments, those skilled in the art can clearly understand that the present invention can be implemented by means of software plus necessary general-purpose hardware, and of course, it can also be implemented by special hardware including application-specific integrated circuits, special CPUs, special memory, special components, etc. Generally, any function performed by a computer program can be easily implemented by corresponding hardware, and the specific hardware structure used to implement the same function can also be diverse, such as analog circuits, digital circuits, or special-purpose circuits. However, for the present invention, software program implementation is more often the preferred implementation method. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product is stored in a readable storage medium, such as a computer floppy disk, USB flash drive, mobile hard disk, read-only memory (ROM), random access memory (RAM), magnetic disk, or optical disk, etc., including several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute the methods of the various embodiments of the present invention.

[0178] The above are merely preferred embodiments of the present invention and do not limit the scope of the patent. Any equivalent structural or procedural transformations made based on the description and drawings of the present invention, or direct or indirect applications in other related technical fields, are similarly included within the scope of patent protection of the present invention.

Claims

1. A control method for an air conditioner, characterized in that, The air conditioner is provided with at least one first heating unit and at least one second heating unit; both the at least one first heating unit and the at least one second heating unit are used to heat the airflow passing through the air outlet; The method includes: Upon receiving a command to operate the air conditioner in heating mode, the compressor, outdoor fan, indoor fan, and at least part of the first heating unit of the air conditioner are controlled to start operation; wherein, after the indoor fan starts operating, the speed gradually increases; Obtain the operating speed of the indoor fan; Determine whether the operating speed has reached the first preset speed; If the first preset rotation speed is reached, then at least a portion of the second heating unit is controlled to start operating.

2. The control method for an air conditioner according to claim 1, characterized in that, Before controlling the compressor, outdoor fan, indoor fan, and at least part of the first heating unit of the air conditioner to start operating upon receiving a command to operate the air conditioner in heating mode, the method further includes: Obtain the outdoor ambient temperature; Determine whether the outdoor ambient temperature is less than or equal to a third preset temperature threshold; If the outdoor ambient temperature is less than or equal to the third preset temperature threshold, then the following steps are performed: upon receiving an instruction to operate the air conditioner in heating mode, the compressor, outdoor fan, indoor fan, and at least part of the first heating unit of the air conditioner are controlled to start operating.

3. The control method according to claim 2, characterized in that, The execution step, before controlling the compressor, outdoor fan, indoor fan, and at least part of the first heating unit of the air conditioner to start operating upon receiving a command to operate the air conditioner in heating mode, further includes: Obtain the real-time indoor temperature; Determine whether the difference between the real-time indoor temperature and the outdoor ambient temperature is less than or equal to a preset difference; If the difference between the third indoor real-time temperature and the outdoor ambient temperature is less than or equal to a preset difference, then after the method controls at least some of the second heating units to start operating when the first preset rotation speed is reached, the method further includes: The system acquires the first real-time indoor temperature, the first real-time indoor heat exchanger temperature, the first operating speed of the indoor fan, and the first operating frequency of the compressor. If the first indoor real-time temperature is less than or equal to the first preset temperature threshold, the first indoor heat exchanger real-time temperature is greater than or equal to the second preset temperature threshold, the first operating speed is equal to the maximum allowable speed, and the first operating frequency is equal to the maximum allowable operating frequency, then the compressor is controlled to increase its frequency, and the indoor fan speed is controlled to increase.

4. The control method according to claim 3, characterized in that, If the first indoor real-time temperature is less than or equal to a first preset temperature threshold, the first indoor heat exchanger real-time temperature is greater than or equal to a second preset temperature threshold, the first operating speed is equal to the maximum allowable speed, and the first operating frequency is equal to the maximum allowable operating frequency, then after controlling the compressor to increase its frequency and controlling the indoor fan speed to increase, the method further includes: Obtain the real-time operating parameters of the air conditioner; Determine whether the real-time operating parameters meet the preset conditions for stopping heating; If the preset conditions for stopping heating are met, then control at least a portion of the second heating units to stop operating; After at least part of the second heating unit stops operating, the real-time temperature of the second indoor heat exchanger of the indoor heat exchanger is obtained; If the real-time temperature of the second indoor heat exchanger is greater than or equal to the second preset temperature threshold, then control at least a portion of the first heating units to stop operating.

5. The control method according to claim 3, characterized in that, After determining whether the difference between the third indoor real-time temperature and the outdoor ambient temperature is less than or equal to a preset difference, the method further includes: If the difference between the third indoor real-time temperature and the outdoor ambient temperature is greater than a preset difference, then after the method controls at least some of the second heating units to start operating when the first preset rotation speed is reached, the method further includes: Obtain the real-time operating parameters of the air conditioner; Determine whether the real-time operating parameters meet the preset conditions for stopping heating; If the preset conditions for stopping heating are met, then control at least a portion of the second heating units to stop operating; After at least part of the second heating unit stops operating, the real-time temperature of the second indoor heat exchanger of the indoor heat exchanger is obtained; If the real-time temperature of the second indoor heat exchanger is greater than or equal to the second preset temperature threshold, then control at least a portion of the first heating units to stop operating.

6. The control method according to claim 4 or 5, characterized in that, The real-time operating parameters include the second indoor real-time temperature and / or the heating unit current; The preset condition for stopping heating is: The current of the heating unit is greater than or equal to a preset current threshold. The second indoor real-time temperature is greater than or equal to the third preset temperature threshold; or The current of the heating unit is greater than or equal to a preset current threshold, and the real-time indoor temperature is greater than or equal to a third preset temperature threshold.

7. A control device for an air conditioner, characterized in that, The air conditioner is provided with at least one first heating unit and at least one second heating unit, both of which are used to heat the airflow passing through the air outlet; The control device includes: The first startup module is used to control the compressor, outdoor fan, indoor fan, and at least part of the first heating unit of the air conditioner to start running when a command to operate the heating mode of the air conditioner is received; wherein, after the indoor fan starts running, the speed gradually increases; The speed acquisition module is used to acquire the operating speed of the indoor fan; The speed determination module is used to determine whether the operating speed of the indoor fan has reached the first preset speed; The second startup module is used to control at least a portion of the second heating unit to start running if the first preset speed is reached.

8. An air conditioner, characterized in that, include: case; At least one first heating unit and at least one second heating unit are provided, both the first heating unit and the second heating unit are disposed inside the housing, and both the at least one first heating unit and the at least one second heating unit are used to heat the airflow passing through the air outlet; The control device for an air conditioner as described in claim 7.

9. The air conditioner according to claim 8, characterized in that, At least one first heating unit and at least one second heating unit are staggered along the axial direction of the indoor fan of the air conditioner and spaced apart from each other.

10. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a control program for an air conditioner, wherein the control program for the air conditioner, when executed by a processor, performs the control method for the air conditioner as described in any one of claims 1 to 6.

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