Axial flow fan, computer readable storage medium, air conditioner and control method of air conditioner

Abstract

The invention provides an axial flow fan, a computer readable storage medium, an air conditioner and a control method of the air conditioner, the air conditioner comprises an outdoor unit, the outdoor unit is provided with the axial flow fan, the axial flow fan comprises a rotation control mechanism, a hub, an adjustment control mechanism and a plurality of axial flow fan blades, and the axial flow fan blades are arranged on the periphery of the hub; the rotation control mechanism controls the hub to rotate, and the adjustment control mechanism controls the axial-flow fan blades to rotate relative to the hub so as to adjust the inclination angle between the axial-flow fan blades and the hub. The control method of the air conditioner comprises a circulation mode, and the circulation mode comprises the step that the inclination angle between the axial flow fan blade and the hub is determined according to at least one parameter of the outdoor environment temperature, the indoor environment temperature and the set target temperature. According to the control method of the air conditioner, the air volume of the axial flow fan blades can be adjusted in a self-adaptive mode under different operation working conditions, the ventilation and heat exchange effect of the outdoor unit is improved, the control steps are simplified, and the energy-saving effect is better.

Description

Technical Field

[0001] This invention relates to the field of air conditioning technology, and in particular to an axial flow fan, a computer-readable storage medium, an air conditioner, and a control method thereof. Background Technology

[0002] With global energy shortages and heightened environmental awareness, energy conservation and emission reduction have become crucial development directions for all industries. Air conditioners account for a significant proportion of building energy consumption, and their operating energy consumption directly impacts overall energy consumption levels. Therefore, achieving high energy efficiency while ensuring user comfort has become a critical issue that the air conditioning industry urgently needs to address.

[0003] To ensure heat exchange efficiency, existing air conditioners are equipped with axial flow fans in their outdoor units. The rotating motor of the axial flow fan controls the rotation of its axial flow blades, so that the airflow enters the casing of the outdoor unit from the air inlet and exits the casing of the outdoor unit from the air outlet. This provides ventilation and heat exchange for components such as the condenser, compressor, and electrical box inside the outdoor unit, thereby maintaining the heat exchange operation of the air conditioner.

[0004] To reduce the power consumption of the unit, an existing air conditioner outdoor unit control method determines the deviation angle between the main shaft of the fan blade drive motor and the main shaft of the sweep bracket motor based on the outdoor ambient temperature, and determines the angular velocity of the sweep bracket motor driving the sweep bracket to rotate based on the high pressure of the outdoor unit, thereby achieving the adaptability of the outdoor unit under severe operating conditions.

[0005] However, the existing method not only requires adjusting the offset angle between the main shaft of the fan drive motor and the main shaft of the sweeping bracket motor, but also adjusting the angular velocity of the sweeping bracket motor driving the sweeping bracket to rotate. This makes the control steps for reducing power consumption complex, resulting in poor energy-saving effect. In order to avoid fluctuations in the speed of the axial fan blades, the speed of the axial fan is set with upper and lower limits. However, the existing axial fan blades with fixed tilt angles still have a large air volume even at the lowest speed limit, which brings unnecessary noise. Moreover, the existing axial fan blades with fixed tilt angles cannot further increase the air volume after reaching the maximum speed limit, causing the air conditioner to easily stop when it reaches the set temperature. This results in frequent start-stop of the compressor, which increases energy consumption and causes large fluctuations in indoor temperature, reducing user comfort. Summary of the Invention

[0006] To achieve the first objective of this invention, the present invention provides a control method for an air conditioner that can adaptively adjust the airflow of the axial fan blades under different operating conditions, thereby improving the ventilation and heat exchange effect of the outdoor unit. The control steps are simplified, resulting in better energy-saving performance. Furthermore, it can achieve a lower axial fan blade airflow even when the axial fan speed has a lower limit, further enhancing energy efficiency and achieving quiet operation. Moreover, it can rapidly and significantly increase the axial fan blade airflow under high-load operating conditions to improve the air conditioner's heat exchange capacity, avoid frequent compressor start-stop cycles, and further enhance energy-saving performance.

[0007] To achieve the second objective of this invention, this invention provides an air conditioner that performs the control method of the above-described air conditioner.

[0008] To achieve the third objective of this invention, this invention provides a computer-readable storage medium for performing the control method of the above-described air conditioner.

[0009] To achieve the fourth objective of the present invention, the present invention provides a control method for the above-mentioned air conditioner or an axial flow fan for the above-mentioned air conditioner.

[0010] To achieve the first objective of this invention, the present invention provides a control method for an air conditioner. The air conditioner includes an outdoor unit, which is equipped with an axial flow fan. The axial flow fan includes a rotation control mechanism, a hub, an adjustment control mechanism, and multiple axial flow blades. The multiple axial flow blades are arranged on the outer periphery of the hub. The rotation control mechanism controls the hub to rotate, and the adjustment control mechanism controls the axial flow blades to rotate relative to the hub, thereby adjusting the tilt angle between the axial flow blades and the hub. The control method for the air conditioner includes a circulation mode, which includes: adjusting the outdoor ambient temperature... Indoor ambient temperature Set target temperature At least one parameter in the equation determines the tilt angle between the axial flow fan blades and the hub.

[0011] A further proposed solution is a loop mode that includes: determining whether the air conditioning cooling requirement is met. Or air conditioning heating If not, then the tilt angle between the axial fan blades and the hub is determined to be the first preset angle; where, The first preset temperature, This is the second preset temperature.

[0012] A further option is that the loop mode also includes: when it is determined that the air conditioning cooling requirement is met... Or air conditioning heating If so, then determine whether it satisfies the condition. If so, then the tilt angle between the axial fan blades and the hub is determined to be the first preset angle; where, This is the first preset temperature difference.

[0013] A further approach is to include in the loop pattern: when it is determined that the condition is not met... If so, then determine whether it satisfies the condition. If so, then the tilt angle between the axial fan blades and the hub is determined to be the second preset angle; the second preset angle is less than the first preset angle. This is the second preset temperature difference.

[0014] A further approach is to include in the loop pattern: when it is determined that the condition is not met... When the angle between the axial flow fan blade and the hub is determined to be the third preset angle, the third preset angle is less than the second preset angle.

[0015] A further solution is that the control method of the air conditioner includes a silent mode, which includes: determining the tilt angle between the axial fan blades and the hub as a fourth preset angle; the fourth preset angle is equal to or less than the third preset angle.

[0016] A further solution is that the control method of the air conditioner includes a powerful mode, which includes: determining the tilt angle between the axial fan blades and the hub as a fifth preset angle; the fifth preset angle is equal to or greater than the first preset angle.

[0017] A further embodiment is that the regulating control mechanism includes an regulating motor, a gear disk, and multiple rotating plates installed inside the hub. The gear disk is sleeved on the drive shaft of the regulating motor. Each rotating plate is adapted to an axial flow fan blade. The rotating plate is provided with a connecting rod that extends radially through the outer peripheral wall of the hub and connects to the axial flow fan blade. Furthermore, one end of the rotating plate in the axial direction of the hub is provided with an arc-shaped rack that meshes with the gear disk.

[0018] A further design involves having multiple limiting grooves extending through the outer circumferential wall of the hub. Each limiting groove extends axially through the hub. Multiple connecting rods connect a rotating plate to an axial flow fan blade. These connecting rods are arranged along the arcuate extension direction of the rack, with each connecting rod passing through a limiting groove.

[0019] A further option is that the rotation control mechanism is a rotary motor, with the hub sleeved on the rotating shaft of the rotary motor, and the rotating shaft of the rotary motor and the drive shaft of the regulating motor are coaxially arranged.

[0020] A further embodiment is that the outer circumference of the rotating shaft of the rotary motor is provided with a first contact groove and a second contact groove, the regulating motor is electrically connected to the first contact groove through a first brush, and the regulating motor is electrically connected to the second contact groove through a second brush.

[0021] To achieve the second objective of the present invention, the present invention provides an air conditioner, including an indoor unit and an outdoor unit having a circuit board. The circuit board is provided with a processor and a memory. The memory stores a computer program. When the computer program is executed by the processor, it implements the various steps of the control method of the air conditioner described above.

[0022] To achieve the third objective of this invention, this invention provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the various steps of the control method for the air conditioner described above.

[0023] To achieve the fourth objective of this invention, this invention provides an axial flow fan, including a rotation control mechanism and a hub. The rotation control mechanism controls the hub to rotate. The axial flow fan also includes an adjustment control mechanism and multiple axial flow blades. The multiple axial flow blades are arranged on the outer periphery of the hub. The adjustment control mechanism controls the axial flow blades to rotate relative to the hub to adjust the tilt angle between the axial flow blades and the hub. The axial flow fan is applied to the control method of the aforementioned air conditioner or to the aforementioned air conditioner.

[0024] A further embodiment is that the regulating control mechanism includes an regulating motor, a gear disk, and multiple rotating plates installed inside the hub. The gear disk is sleeved on the drive shaft of the regulating motor. Each rotating plate is adapted to an axial flow fan blade. The rotating plate is provided with a connecting rod that extends radially through the outer peripheral wall of the hub and connects to the axial flow fan blade. Furthermore, one end of the rotating plate in the axial direction of the hub is provided with an arc-shaped rack that meshes with the gear disk.

[0025] A further design involves having multiple limiting grooves extending through the outer circumferential wall of the hub. Each limiting groove extends axially through the hub. Multiple connecting rods connect a rotating plate to an axial flow fan blade. These connecting rods are arranged along the arcuate extension direction of the rack, with each connecting rod passing through a limiting groove.

[0026] A further option is that the rotation control mechanism is a rotary motor, with the hub sleeved on the rotating shaft of the rotary motor, and the rotating shaft of the rotary motor and the drive shaft of the regulating motor are coaxially arranged.

[0027] A further embodiment is that the outer circumference of the rotating shaft of the rotary motor is provided with a first contact groove and a second contact groove, the regulating motor is electrically connected to the first contact groove through a first brush, and the regulating motor is electrically connected to the second contact groove through a second brush.

[0028] The present invention relates to an axial flow fan that can dynamically adjust the tilt angle between the axial flow fan blades and the hub under different load operating conditions, increasing or decreasing the cutting area of ​​the axial flow fan blades on the air in the rotation direction, thereby changing the air volume and air pressure of the axial flow fan. Furthermore, when the rotation speed of the axial flow fan remains constant, the air passage efficiency of the axial flow fan can be adjusted, thereby improving the air conditioning effect of the axial flow fan.

[0029] The control method of this invention for an air conditioner determines the tilt angle between the axial fan blades and the hub based on at least one parameter among the outdoor ambient temperature T1, indoor ambient temperature T2, and set target temperature T0 when controlling the air conditioner to execute the circulation mode. This allows for adaptive adjustment of the airflow of the axial fan blades under different operating conditions, improving the ventilation and heat exchange effect of the outdoor unit. Existing methods require adjusting not only the deviation angle between the main shaft of the fan blade drive motor and the main shaft of the sweeping bracket motor, but also the angular velocity of the sweeping bracket motor driving the sweeping bracket, making the power consumption reduction control steps complex and resulting in poor energy-saving effects. The control method of this embodiment only requires adjusting the tilt angle between the axial fan blades and the hub, simplifying the control steps and improving energy-saving effects. Furthermore, it can achieve a lower axial fan blade airflow even when the axial fan speed has a lower limit, avoiding frequent compressor start-stop and further improving energy-saving effects. It also achieves quiet operation and can quickly increase the axial fan blade airflow under high load operating conditions to improve the air conditioner's heat exchange capacity.

[0030] Furthermore, the control method of the air conditioner of the present invention provides users with a silent mode, a circulation mode, and a powerful mode for selection, so that users can perform intelligent control according to their own needs, thereby improving the user experience. Attached Figure Description

[0031] Figure 1 This is a structural diagram of an embodiment of the axial flow fan of the present invention.

[0032] Figure 2 This is an exploded view of an embodiment of the axial flow fan of the present invention.

[0033] Figure 3 This is a structural diagram showing the combination of the gear disk, rotating plate, connecting rod, and axial flow fan blades in an embodiment of the axial flow fan of the present invention.

[0034] Figure 4 This is a first-view structural diagram of the rotating plate, connecting rod, and axial flow fan blades in an embodiment of the axial flow fan of the present invention.

[0035] Figure 5 This is a second-view structural diagram of the rotating plate, connecting rod, and axial flow fan blades in an embodiment of the axial flow fan of the present invention.

[0036] Figure 6 This is a structural diagram of the hub in an embodiment of the axial flow fan of the present invention.

[0037] Figure 7 This is a structural diagram of the rotary motor in an embodiment of the axial flow fan of the present invention.

[0038] Figure 8 This is a schematic diagram showing that the inclination angle between the axial flow fan blades and the hub in an embodiment of the axial flow fan of the present invention is a first preset angle.

[0039] Figure 9 This is a schematic diagram showing that the inclination angle between the axial flow fan blades and the hub in an embodiment of the axial flow fan of the present invention is a second preset angle.

[0040] Figure 10 This is a schematic diagram showing that the inclination angle between the axial flow fan blades and the hub in an embodiment of the axial flow fan of the present invention is a third preset angle.

[0041] Figure 11 This is a control flowchart of an embodiment of the control method for the air conditioner of the present invention.

[0042] The present invention will be further described below with reference to the accompanying drawings and embodiments. Detailed Implementation

[0043] Various exemplary embodiments of the invention will now be described in detail with reference to the accompanying drawings. The descriptions of the exemplary embodiments are merely illustrative and are in no way intended to limit the invention or its application or use. The invention can be embodied in many different forms and is not limited to the embodiments described herein. These embodiments are provided to make the invention thorough and complete, and to fully express the scope of the invention to those skilled in the art. It should be noted that, unless otherwise specifically stated, the relative arrangement of components and steps, the composition of materials, numerical expressions, and values ​​set forth in these embodiments should be interpreted as merely exemplary and not as limiting.

[0044] The terms "first," "second," and similar words used in this invention do not indicate any order, quantity, or importance, but are merely used to distinguish different parts. Words such as "including" or "comprising" mean that the element preceding the word encompasses the element listed after it, without excluding the possibility of encompassing other elements. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0045] In this invention, when a specific device is described as being located between a first device and a second device, an intermediary device may or may not be present between the specific device and the first or second device. When a specific device is described as being connected to other devices, the specific device may be directly connected to the other devices without an intermediary device, or it may not be directly connected to the other devices but may have an intermediary device.

[0046] All terms used in this invention (including technical or scientific terms) have the same meaning as understood by one of ordinary skill in the art, unless otherwise specifically defined. It should also be understood that terms defined in general dictionaries should be interpreted as having the meaning consistent with their meaning in the context of the relevant art, and not as having an idealized or highly formalized meaning, unless expressly defined herein.

[0047] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, they should be considered part of the specification.

[0048] Example of an axial flow fan: See Figures 1 to 7 In this embodiment, the axial flow fan 10 includes a rotation control mechanism, a hub 12, an adjustment control mechanism, and multiple axial flow blades 13. The rotation control mechanism controls the hub 12 to rotate, and the multiple axial flow blades 13 are arranged on the outer periphery of the hub 12. The adjustment control mechanism controls the axial flow blades 13 to rotate relative to the hub 12, thereby adjusting the tilt angle between the axial flow blades 13 and the hub 12. Specifically, in this embodiment, the tilt angle is the angle between the tangent at the root of the axial flow blade 13 and the projection of the axial end face of the hub 12 in the top view direction of the hub 12.

[0049] When the axial fan 10 is used in the outdoor unit of an air conditioner, under the high load operation requirements of the air conditioner, the adjustment and control mechanism of the axial fan 10 in this embodiment can control the axial fan blade 13 to rotate relative to the hub 12, so as to adjust the tilt angle between the axial fan blade 13 and the hub 12 to a first preset angle θ1, such as... Figure 8 As shown, a larger first preset angle θ1 can increase the cutting area of ​​the axial fan blade 13 on the air in the rotation direction, and can achieve a higher air volume of the axial fan blade 13 when the speed of the axial fan 10 has an upper limit. That is, when the speed of the axial fan 10 is at its upper limit, the tilt angle between the axial fan blade 13 and the hub 12 can be adjusted to a larger value, so that the air volume of the axial fan blade 13 is higher than the air volume when the speed of the axial fan 10 is at its upper limit, thereby improving the heat exchange capacity of the air conditioner, avoiding frequent start-stop of the compressor, and improving the energy-saving effect.

[0050] Under moderate load operation requirements of the air conditioner, the adjustment and control mechanism of the axial flow fan 10 in this embodiment can control the rotation of the axial flow fan blade 13 relative to the hub 12 to adjust the tilt angle between the axial flow fan blade 13 and the hub 12 to a second preset angle θ2, such as... Figure 9 As shown, the second preset angle θ2, which is smaller than the first preset angle θ1, can reduce the cutting area of ​​the axial fan blade 13 on the air in the rotation direction, thereby reducing the air volume and air pressure of the axial fan blade 13 to adapt to the current load operation requirements, realize the stable heat exchange operation of the air conditioner, and meet the normal user heat exchange requirements without generating excessive noise.

[0051] Under the low-load operation requirements of the air conditioner, the adjustment and control mechanism of the axial flow fan 10 in this embodiment can control the rotation of the axial flow fan blade 13 relative to the hub 12 to adjust the tilt angle between the axial flow fan blade 13 and the hub 12 to a third preset angle θ3, such as... Figure 10 As shown, the third preset angle θ3, which is smaller than the second preset angle θ2, can make the cutting area of ​​the axial fan blade 13 on the air in the rotation direction smaller, thereby further reducing the air volume and air pressure of the axial fan blade 13 to adapt to the current load operation requirements. Moreover, it can achieve a lower air volume of the axial fan blade 13 when the speed of the axial fan 10 has a lower limit. That is, when the speed of the axial fan 10 is at the lower limit, the tilt angle between the axial fan blade 13 and the hub 12 can be adjusted to be smaller, so that the air volume of the axial fan blade 13 is smaller than the air volume when the speed of the axial fan 10 is at the lower limit. This avoids frequent start and stop of the compressor, thereby reducing energy consumption, improving energy saving effect, and achieving the purpose of quiet operation.

[0052] Under the high comfort operation requirements of air conditioners, the adjustment and control mechanism of the axial fan 10 in this embodiment can adjust and control the rotation of the axial fan blade 13 relative to the hub 12 in real time according to the heat exchange status of the air conditioner, so as to dynamically adjust the tilt angle between the axial fan blade 13 and the hub 12 in real time, thereby dynamically adjusting the air volume and air pressure of the axial fan blade 13 in real time. Moreover, the tilt angle between the axial fan blade 13 and the hub 12 can be continuously and smoothly steplessly adjusted, achieving more precise and flexible control, and realizing stable heat exchange operation of the air conditioner, avoiding indoor temperature fluctuations that affect the user's comfort experience.

[0053] Therefore, in this embodiment, the axial flow fan 10 can dynamically adjust the tilt angle between the axial flow fan blade 13 and the hub 12 under different load operating conditions, increasing or decreasing the cutting area of ​​the axial flow fan blade 13 on the air in the rotation direction, thereby changing the air volume and air pressure of the axial flow fan blade 13. Moreover, when the rotation speed of the axial flow fan blade 13 remains constant, the air passage efficiency of the axial flow fan blade 13 can be adjusted, thereby improving the air conditioning effect of the axial flow fan 10.

[0054] To improve the stability and reliability of regulation, the regulation control mechanism in this embodiment includes a regulating motor 14, a gear disk 15, and multiple rotating plates 16 disposed in the hub 12. The gear disk 15 is sleeved on the drive shaft of the regulating motor 14. Each rotating plate 16 is adapted to an axial flow fan blade 13. The rotating plate 16 is provided with a connecting rod 18, which extends radially through the outer peripheral wall of the hub 12 and connects to the axial flow fan blade 13. Furthermore, one end of the rotating plate 16 in the axial direction of the hub 12 is provided with an arc-shaped rack 17, which meshes with the gear disk 15.

[0055] Thus, the drive shaft of the adjusting motor 14 drives the gear disk 15 to rotate. Since the rack 17 on the rotating plate 16 meshes with the gear disk 15 and the rack 17 extends in an arc shape, it synchronously drives the rotating plate 16 to drive the connecting rod 18 and the axial flow fan blade 13 to rotate, so that the axial flow fan blade 13 rotates relative to the hub 12, thereby achieving the purpose of adjusting the tilt angle between the axial flow fan blade 13 and the hub 12. The rack 17 meshes with the gear disk 15 to transmit power, making the power transmission stable and reliable.

[0056] To improve the stability and accuracy of the rotation of the axial flow fan blade 13 relative to the hub 12, this embodiment provides multiple limiting grooves 121 through the outer peripheral wall of the hub 12. Each limiting groove 121 extends axially in the hub 12. Multiple connecting rods 18 are connected between a rotating plate 16 and an axial flow fan blade 13. The multiple connecting rods 18 are arranged in the arc-shaped extension direction of the rack 17. Each connecting rod 18 passes through a limiting groove 121. Thus, during the rotation of the axial flow fan blade 13 relative to the hub 12, the connecting rods 18 connected between the rotating plate 16 and the axial flow fan blade 13 slide relative to the limiting grooves 121 in the axial direction of the hub 12. The setting of the limiting grooves 121 can guide and limit the rotation of the axial flow fan blade 13 relative to the hub 12, so that the axial flow fan blade 13 rotates stably and accurately relative to the hub 12.

[0057] Specifically, in this embodiment, the rotation control mechanism is a rotary motor 11, and the hub 12 is sleeved on the rotation shaft 111 of the rotary motor 11. The rotation shaft 111 of the rotary motor 11 and the drive shaft of the regulating motor 14 are coaxially arranged, which can avoid dynamic balance problems caused by the rotation of the drive shaft of the regulating motor 14 to drive the axial flow fan blade 13 to rotate relative to the hub 12, thereby improving the stability and reliability of the control.

[0058] Furthermore, in this embodiment, the outer periphery of the rotating shaft 111 of the rotary motor 11 is provided with a first contact groove 1111 and a second contact groove 1112. The regulating motor 14 is electrically connected to the first contact groove 1111 through a first brush, and the regulating motor 14 is electrically connected to the second contact groove 1112 through a second brush. Thus, the regulating motor 14 is electrically connected to the first contact groove 1111 and the second contact groove 1112 on the rotating shaft 111 of the rotary motor 11 through the first brush and the second brush respectively to obtain power supply and signal transmission.

[0059] Example of an air conditioner control method: An air conditioner includes an indoor unit and an outdoor unit. The outdoor unit is equipped with components such as an axial fan 10, a condenser, a compressor, and an electrical box. In this embodiment, the axial fan 10 is the same as the axial fan 10 in the above-mentioned embodiment. The rotating motor 11 of the axial fan 10 controls the rotation of its axial fan blades 13, so that the airflow enters the casing of the outdoor unit from the air inlet and exits the casing of the outdoor unit from the air outlet. This provides ventilation and heat exchange for the components such as the condenser, compressor, and electrical box inside the outdoor unit, thereby ensuring the heat exchange operation of the air conditioner.

[0060] See Figure 11 The following is a control flowchart of the control method for the air conditioner in this embodiment. The specific steps of the control method for the air conditioner in this embodiment are as follows.

[0061] In step S11, the air conditioner is turned on. That is, the user sends a power-on signal to the indoor unit of the air conditioner via the remote control, and the circuit board of the indoor unit receives the power-on signal and executes the power-on command.

[0062] When step S12 is executed, the air conditioner is controlled to enter the cycle mode. This cycle mode is sent by the user to the indoor unit of the air conditioner via the remote control. Then, step S13 is executed to check the outdoor ambient temperature. Indoor ambient temperature Specifically, the outdoor unit of the air conditioner is equipped with a first temperature sensor, which can detect and obtain the outdoor ambient temperature in real time. Furthermore, the indoor unit of the air conditioner is equipped with a second temperature sensor, which can detect and obtain the indoor ambient temperature in real time. .

[0063] Then, step S14 is executed to determine whether the air conditioning cooling requirement is met. Or air conditioning heating If so, proceed to step S16; otherwise, proceed to step S15. Wherein, The first preset temperature, This is the second preset temperature.

[0064] When step S14 determines that the air conditioning cooling requirement is not met... Or air conditioning heating This indicates the outdoor ambient temperature. If the temperature is too hot or too cold, causing the outdoor unit to operate under high load cooling or heating conditions, then step S15 is executed to determine the tilt angle between the axial fan blade 13 and the hub 12 as a first preset angle θ1. That is, the adjustment and control mechanism of the axial fan 10 controls the axial fan blade 13 to rotate relative to the hub 12, thereby adjusting the tilt angle between the axial fan blade 13 and the hub 12 to the first preset angle θ1. Figure 8 As shown, a larger first preset angle θ1 can increase the cutting area of ​​the axial fan blade 13 on the air in the rotation direction, thereby increasing the air volume and air pressure of the axial fan blade 13, so as to ensure the ventilation and heat exchange effect of the condenser, compressor, electrical box and other components in the outdoor unit, while improving the heat exchange capacity of the air conditioner, and thus improving the operating efficiency of the air conditioner.

[0065] Specifically, in this embodiment, the first preset angle θ1 is between 40° and 60°.

[0066] When step S14 determines that the air conditioning cooling requirement is met... Or air conditioning heating If the outdoor unit's cooling or heating operating environment is good, then proceed to step S16 to determine whether the conditions are met. If so, proceed to step S15; otherwise, proceed to step S17. Wherein, This is the first preset temperature difference.

[0067] When step S16 determines that the condition is satisfied When, it indicates the indoor ambient temperature. With the set target temperature The large difference between them reflects the indoor ambient temperature. Distance from the user-defined target temperature Due to the distance, rapid heat exchange is required to maintain the indoor ambient temperature. Close to the user's set target temperature Then, step S15 is executed to determine the tilt angle between the axial flow fan blade 13 and the hub 12 as the first preset angle θ1. That is, the adjustment control mechanism of the axial flow fan 10 controls the axial flow fan blade 13 to rotate relative to the hub 12, so as to adjust the tilt angle between the axial flow fan blade 13 and the hub 12 to the first preset angle θ1. Figure 8 As shown, a larger first preset angle θ1 can increase the cutting area of ​​the axial fan blade 13 on the air in the rotation direction, thereby increasing the air volume and air pressure of the axial fan blade 13, so as to quickly improve the heat exchange efficiency of the air conditioner. At this time, the outdoor unit has a heavy heat load, which can ensure the effect of ventilation and heat exchange on the condenser, compressor, electrical box and other components in the outdoor unit, and achieve the purpose of rapid heat exchange.

[0068] When step S16 determines that the condition is not met. When, it indicates the indoor ambient temperature. With the set target temperature The small difference between them reflects the indoor ambient temperature. Close to the user-defined target temperature Then proceed to step S17 to determine whether the condition is met. If so, proceed to step S18; otherwise, proceed to step S19. Wherein, This is the second preset temperature difference.

[0069] When step S17 determines that the condition is satisfied When, it indicates the indoor ambient temperature. With the set target temperature The smaller difference between them reflects the indoor ambient temperature. Closer to the user-set target temperature Then, step S18 is executed to determine the tilt angle between the axial flow fan blade 13 and the hub 12 as the second preset angle θ2. That is, the adjustment control mechanism of the axial flow fan 10 controls the axial flow fan blade 13 to rotate relative to the hub 12, so as to adjust the tilt angle between the axial flow fan blade 13 and the hub 12 to the second preset angle θ2. Figure 9 As shown, the second preset angle θ2, which is smaller than the first preset angle θ1, can reduce the cutting area of ​​the axial fan blade 13 on the air in the rotation direction, thereby reducing the air volume and air pressure of the axial fan blade 13 to adapt to the current load operation requirements, realize the stable heat exchange operation of the air conditioner, and meet the normal user heat exchange requirements without generating excessive noise.

[0070] Wherein, the second preset angle θ2 is less than the first preset angle θ1. Specifically, in this embodiment, the second preset angle θ2 is between 20° and 35°.

[0071] When step S17 determines that the condition is not met. At that time, since step S16 has already determined... This indicates that at this time This indicates the indoor ambient temperature. With the set target temperature The differences between them are very close, reflecting the indoor ambient temperature. Very close to the user-set target temperature Then, step S19 is executed to determine the tilt angle between the axial flow fan blade 13 and the hub 12 as the third preset angle θ3. That is, the adjustment control mechanism of the axial flow fan 10 controls the axial flow fan blade 13 to rotate relative to the hub 12, so as to adjust the tilt angle between the axial flow fan blade 13 and the hub 12 to the third preset angle θ3. Figure 10As shown, the third preset angle θ3, which is smaller than the second preset angle θ2, can make the cutting area of ​​the axial fan blade 13 on the air in the rotation direction smaller, thereby further reducing the air volume and air pressure of the axial fan blade 13 to adapt to the current load operation requirements. Moreover, when the speed of the axial fan 10 has a lower limit, a lower air volume of the axial fan blade 13 can be achieved. That is, when the speed of the axial fan 10 is at the lower limit, the tilt angle between the axial fan blade 13 and the hub 12 can be adjusted to be smaller, so that the air volume of the axial fan blade 13 is smaller than the air volume when the speed of the axial fan 10 is at the lower limit, so as to avoid frequent start and stop of the compressor, thereby reducing energy consumption, improving energy saving effect, and achieving the purpose of quiet operation.

[0072] The third preset angle θ3 is less than the second preset angle θ2. Specifically, in this embodiment, the third preset angle θ3 is between 5° and 15°.

[0073] Therefore, the control method of the air conditioner in this embodiment, when controlling the air conditioner to execute the circulation mode, adjusts the outdoor ambient temperature accordingly. Indoor ambient temperature Set target temperature At least one parameter in the method determines the tilt angle between the axial fan blade 13 and the hub 12, thereby enabling adaptive adjustment of the airflow of the axial fan blade 13 under different cooling or heating operating conditions, improving the ventilation and heat exchange effect of the outdoor unit. Existing methods not only require adjusting the deviation angle between the main shaft of the fan blade drive motor and the main shaft of the sweep bracket motor, but also adjusting the angular velocity of the sweep bracket motor driving the sweep bracket rotation, making the power consumption reduction control steps complex and resulting in poor energy-saving effects. The control method of this embodiment only requires adjusting the tilt angle between the axial fan blade 13 and the hub 12, simplifying the control steps and improving energy-saving effects. Furthermore, it can achieve a lower airflow of the axial fan blade 13 even when the speed of the axial fan 10 has a lower limit, further improving energy-saving effects and achieving quiet operation. It can also quickly and significantly increase the airflow of the axial fan blade 13 under high-load operating conditions to improve the heat exchange capacity of the air conditioner, avoiding frequent compressor start-stop, and further improving energy-saving effects.

[0074] When step S20 is executed, i.e., the air conditioner is controlled to enter silent mode, this silent mode is sent by the user to the indoor unit of the air conditioner via remote control, indicating that the user values ​​noise reduction and energy saving. Then step S21 is executed, determining the tilt angle between the axial fan blade 13 and the hub 12 to the fourth preset angle. That is, the adjustment control mechanism of the axial fan 10 controls the axial fan blade 13 to rotate relative to the hub 12, so as to adjust the tilt angle between the axial fan blade 13 and the hub 12 to the fourth preset angle. A smaller fourth preset angle allows the axial fan blade 13 to direct airflow in the rotation direction. The cutting area is smaller, thereby further reducing the air volume and air pressure of the axial fan blade 13 to adapt to the current load operation requirements. Moreover, when the speed of the axial fan 10 has a lower limit, the air volume of the axial fan blade 13 is reduced. That is, when the speed of the axial fan 10 is at the lower limit, the tilt angle between the axial fan blade 13 and the hub 12 can be adjusted to be smaller, so that the air volume of the axial fan blade 13 is smaller than the air volume when the speed of the axial fan 10 is at the lower limit. This avoids frequent start and stop of the compressor, thereby reducing energy consumption, improving energy saving effect, and achieving the purpose of quiet operation.

[0075] Specifically, in this embodiment, the fourth preset angle is equal to or less than the third preset angle θ3.

[0076] When step S30 is executed, the air conditioner is controlled to operate in a powerful mode. This powerful mode is sent by the user to the indoor unit of the air conditioner via the remote control, indicating that the user values ​​heat exchange efficiency and effect more. Then, step S31 is executed to determine the tilt angle between the axial fan blade 13 and the hub 12 as the fifth preset angle. That is, the adjustment control mechanism of the axial fan 10 controls the axial fan blade 13 to rotate relative to the hub 12 to adjust the tilt angle between the axial fan blade 13 and the hub 12 to the fifth preset angle. A larger fifth preset angle can increase the cutting area of ​​the axial fan blade 13 on the air in the direction of rotation, thereby increasing the air volume and air pressure of the axial fan blade 13, so as to quickly improve the heat exchange efficiency of the air conditioner. At this time, the heat load of the outdoor unit is heavier, while ensuring the ventilation and heat exchange effect of the condenser, compressor, electrical box and other components in the outdoor unit, so as to achieve the purpose of rapid heat exchange.

[0077] Specifically, in this embodiment, the fifth preset angle is equal to or greater than the first preset angle θ1.

[0078] Therefore, the control method of the air conditioner in this embodiment has a silent mode, a circulation mode, and a powerful mode for users to choose from, so that users can make intelligent control according to their own needs, thereby improving the user experience.

[0079] Air conditioner example: The air conditioner in this embodiment includes an indoor unit and an outdoor unit with circuit boards. The circuit boards are equipped with a processor and a memory. The memory stores a computer program that can run on the processor, and when the processor executes the computer program, it implements each step of the control method of the air conditioner described above.

[0080] For example, a computer program can be divided into one or more modules, one or more of which are stored in memory and executed by a processor to complete the various modules of the present invention. One or more modules can be a series of computer program instruction segments capable of performing a specific function, which describe the execution process of the computer program in a terminal device.

[0081] The processor referred to in this invention can be a Central Processing Unit (CPU), or other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor can be a microprocessor or any conventional processor. The processor is the control center of an electrical appliance, connecting all parts of the appliance through various interfaces and lines.

[0082] Memory can be used to store computer programs and / or modules. The processor implements various functions of an electrical appliance by running or executing the computer programs and / or modules stored in the memory, and by accessing data stored in the memory. Memory can mainly include a program storage area and a data storage area. The program storage area can store the operating system, at least one application program required for a function, etc.; the data storage area can store data created based on the use of the electrical appliance, etc. Furthermore, memory can include high-speed random access memory, and can also include non-volatile memory, such as hard disks, RAM, plug-in hard disks, smart media cards (SMC), secure digital cards (SD cards), flash cards, at least one disk storage device, flash memory device, or other volatile solid-state storage devices.

[0083] Examples of computer-readable storage media: If the computer program stored in the air conditioner's memory is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, all or part of the processes in the above-described embodiments of the present invention can also be implemented by a computer program instructing related hardware. This computer program can be stored in a computer-readable storage medium, and when executed by a processor, it can implement the various steps of the above-described air conditioner control method.

[0084] Computer programs include computer program code, which can be in the form of source code, object code, executable files, or certain intermediate forms. Computer-readable media can include: any entity or device capable of carrying computer program code, recording media, USB flash drives, portable hard drives, magnetic disks, optical disks, computer memory, read-only memory (ROM), random access memory (RAM), electrical carrier signals, telecommunication signals, and software distribution media, etc. It should be noted that the content included in computer-readable media can be appropriately added to or subtracted according to the requirements of legislation and patent practice in a jurisdiction. For example, in some jurisdictions, according to legislation and patent practice, computer-readable media do not include electrical carrier signals and telecommunication signals.

[0085] The above embodiments are merely preferred examples of the present invention and are not intended to limit the scope of the present invention. Therefore, all equivalent changes or modifications made to the structure, features and principles of the present invention in accordance with the claims of the present invention should be included in the scope of the present invention patent application.

Claims

1. A method for controlling an air conditioner, the air conditioner comprising an outdoor unit, the outdoor unit being equipped with an axial flow fan, characterized in that: The axial flow fan includes a rotation control mechanism, a hub, an adjustment control mechanism, and multiple axial flow blades. The multiple axial flow blades are arranged on the outer periphery of the hub. The rotation control mechanism controls the hub to rotate, and the adjustment control mechanism controls the axial flow blades to rotate relative to the hub, so as to adjust the tilt angle between the axial flow blades and the hub. The control method for the air conditioner includes a circulation mode, which includes: adjusting the air conditioner based on the outdoor ambient temperature. Indoor ambient temperature Set target temperature At least one parameter in the equation determines the tilt angle between the axial flow fan blade and the hub.

2. The control method for an air conditioner according to claim 1, characterized in that: The cycle mode includes: determining whether the air conditioning cooling requirement is met. Or air conditioning heating If not, then the tilt angle between the axial flow fan blade and the hub is determined to be the first preset angle; in, The first preset temperature, This is the second preset temperature.

3. The control method for an air conditioner according to claim 2, characterized in that: The cycle mode also includes: when it is determined that the air conditioning cooling is satisfied... Or air conditioning heating Then determine whether it satisfies If so, the tilt angle between the axial flow fan blade and the hub is determined to be the first preset angle; in, This is the first preset temperature difference.

4. The control method for an air conditioner according to claim 3, characterized in that: The loop mode also includes: when it is determined that the condition is not met. If so, then determine whether it satisfies the condition. If so, the tilt angle between the axial flow fan blade and the hub is determined to be the second preset angle; The second preset angle is smaller than the first preset angle. This is the second preset temperature difference.

5. The control method for an air conditioner according to claim 4, characterized in that: The loop mode also includes: when it is determined that the condition is not met. When this happens, the tilt angle between the axial flow fan blade and the hub is determined to be a third preset angle; The third preset angle is smaller than the second preset angle.

6. The control method for an air conditioner according to claim 5, characterized in that: The control method of the air conditioner includes a silent mode, wherein the silent mode includes: determining the tilt angle between the axial fan blade and the hub as a fourth preset angle; The fourth preset angle is equal to or less than the third preset angle.

7. The control method for an air conditioner according to claim 2, characterized in that: The control method of the air conditioner includes a powerful mode, which includes: determining the tilt angle between the axial fan blade and the hub to be a fifth preset angle; The fifth preset angle is equal to or greater than the first preset angle.

8. The control method for an air conditioner according to any one of claims 1 to 7, characterized in that: The adjustment and control mechanism includes an adjustment motor, a gear disk, and multiple rotating plates disposed in the hub. The gear disk is sleeved on the drive shaft of the adjustment motor, and one rotating plate is adapted to one axial flow fan blade. The rotating plate is provided with a connecting rod, which extends radially through the outer peripheral wall of the hub and connects to the axial flow fan blade. The rotating plate is provided with an arc-shaped rack at one end of the hub in the axial direction, and the rack meshes with the gear disk.

9. The control method for an air conditioner according to claim 8, characterized in that: The outer peripheral wall of the hub is provided with multiple limiting grooves, each of which extends axially in the hub. Multiple connecting rods are connected between a rotating plate and an axial flow fan blade. The multiple connecting rods are arranged in the arc-shaped extension direction of the rack, and each connecting rod passes through a limiting groove.

10. The control method for an air conditioner according to claim 8, characterized in that: The rotation control mechanism is a rotary motor, the hub is sleeved on the rotation shaft of the rotary motor, and the rotation shaft of the rotary motor and the drive shaft of the regulating motor are coaxially arranged.

11. The control method for an air conditioner according to claim 10, characterized in that: The rotating motor has a first contact groove and a second contact groove on the outer periphery of its rotating shaft. The adjusting motor is electrically connected to the first contact groove via a first brush and to the second contact groove via a second brush.

12. An air conditioner, characterized in that, The device includes an indoor unit and an outdoor unit with circuit boards. The circuit boards are equipped with a processor and a memory. The memory stores a computer program. When the computer program is executed by the processor, it implements the various steps of the control method for the air conditioner according to any one of claims 1 to 11.

13. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by the processor, it implements the various steps of the control method for the air conditioner according to any one of claims 1 to 11.

14. An axial flow fan, comprising a rotation control mechanism and a hub, wherein the rotation control mechanism controls the rotation of the hub, characterized in that: The axial flow fan also includes an adjustment and control mechanism and multiple axial flow blades. The multiple axial flow blades are arranged on the outer periphery of the hub. The adjustment and control mechanism controls the axial flow blades to rotate relative to the hub to adjust the tilt angle between the axial flow blades and the hub. The axial flow fan is applied to the control method of the air conditioner according to any one of claims 1 to 11 or the air conditioner according to claim 12.

15. The axial flow fan according to claim 14, characterized in that: The adjustment and control mechanism includes an adjustment motor, a gear disk, and multiple rotating plates disposed in the hub. The gear disk is sleeved on the drive shaft of the adjustment motor, and one rotating plate is adapted to one axial flow fan blade. The rotating plate is provided with a connecting rod, which extends radially through the outer peripheral wall of the hub and connects to the axial flow fan blade. The rotating plate is provided with an arc-shaped rack at one end of the hub in the axial direction, and the rack meshes with the gear disk.

16. The axial flow fan according to claim 15, characterized in that: The outer peripheral wall of the hub is provided with multiple limiting grooves, each of which extends axially in the hub. Multiple connecting rods are connected between a rotating plate and an axial flow fan blade. The multiple connecting rods are arranged in the arc-shaped extension direction of the rack, and each connecting rod passes through a limiting groove.

17. The axial flow fan according to claim 15, characterized in that: The rotation control mechanism is a rotary motor, the hub is sleeved on the rotation shaft of the rotary motor, and the rotation shaft of the rotary motor and the drive shaft of the regulating motor are coaxially arranged.

18. The axial flow fan according to claim 17, characterized in that: The rotating motor has a first contact groove and a second contact groove on the outer periphery of its rotating shaft. The adjusting motor is electrically connected to the first contact groove via a first brush and to the second contact groove via a second brush.

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