Position adjusting device and control method of outdoor fan of air conditioner

Abstract

The application discloses a position adjusting device and a control method of an outdoor fan of an air conditioner, and relates to the technical field of air conditioners. The position adjusting device comprises a motor connected with an axial flow fan blade of an outdoor unit of the air conditioner and an adjusting assembly connected with the motor. The adjusting assembly drives the axial flow fan blade to axially move by controlling the axial movement of the motor, so as to adjust the axial position between the axial flow fan blade and a flow guide ring of the outdoor unit of the air conditioner. The method comprises the following steps: determining the rotating speed of the outdoor fan according to the acquired outdoor environment temperature and condenser coil temperature, and controlling the axial flow fan blade to axially move through the position adjusting device; and controlling the axial movement of the axial flow fan blade according to the recorded absolute temperature difference values at multiple adjacent time points during the axial movement of the axial flow fan blade. The embodiment of the application can effectively avoid the problem of over-regulation of the rotating speed of the outdoor fan of the air conditioner caused by the hysteresis of temperature detection, improve the stability of the outdoor unit of the air conditioner, and reduce energy consumption.

Description

Technical Field

[0001] The embodiments of the present invention relate to the technical field of air conditioning, and in particular to a position adjustment device and a control method for an outdoor fan of an air conditioner. Background Art

[0002] As people's living standards continue to improve, their standards for quality of life are also increasing. Air conditioners have become an indispensable household appliance in their lives. Air conditioners can not only be used for indoor cooling and heating, but also improve indoor air quality. By installing an air conditioner indoors, the comfort of the indoor environment can be improved. However, in the prior art, when the air conditioner is in heating mode, the speed of the air conditioner's outdoor fan is controlled based on multiple factors such as the outdoor ambient temperature, compressor frequency, external pipe temperature, and the current operating cycle. When the air conditioner is in cooling mode, the speed of the outdoor fan is usually adjusted based on the temperature of the outdoor heat exchanger to achieve control of the air conditioner's outdoor fan. However, due to the lag in temperature detection, the outdoor fan speed may still be adjusted even when the required speed has been reached, causing the outdoor fan speed to overshoot, thereby affecting the efficiency and stability of the air conditioning system and increasing energy consumption. Summary of the Invention

[0003] The embodiments of the present invention provide a position adjustment device and a control method for an outdoor fan of an air conditioner, aiming to solve the existing problem of over-regulation of the speed of the outdoor fan of the air conditioner due to the hysteresis of temperature detection.

[0004] In the first aspect, an embodiment of the present invention provides a position adjustment device, which is applied to an air-conditioning outdoor unit, comprising: a motor, which is connected to the axial fan blades of the air-conditioning outdoor unit; an adjustment component, which is connected to the motor; wherein the adjustment component drives the axial fan blades to move axially by controlling the axial movement of the motor to adjust the axial position between the axial fan blades and the guide ring of the air-conditioning outdoor unit.

[0005] In the position adjustment device provided by the present invention, the adjustment component includes a power component, and the power component includes a telescopic part and a mounting part fixedly connected to the telescopic part. The telescopic part is used to control the axial flow fan blade to move axially, and the mounting part is used to install the motor.

[0006] In the position adjustment device provided by the present invention, the adjustment component also includes a gasket, through which the position adjustment device is fixedly installed on the bracket of the air-conditioning outdoor unit. The power component includes multiple power parts, and each power part includes the telescopic part and the installation part.

[0007] In the position adjustment device provided by the present invention, a through hole is provided on the gasket, the through hole is located in the enclosed area where the plurality of power members are located, and the motor is installed in the through hole.

[0008] In the position adjustment device provided by the present invention, the adjustment assembly further includes a fixing member, the fixing member is mounted on the gasket, and the motor is mounted on the fixing member and is located in the through hole.

[0009] In the position adjustment device provided by the present invention, the fixing member includes a fixing portion, the number of the fixing portions is equal to the number of the power members, each of the fixing portions is provided with a mounting hole, the mounting portion passes through the mounting hole and the thread on the mounting portion is exposed.

[0010] In the position adjustment device provided by the present invention, the guide ring is provided with an inlet section, a transition section and an outlet section, the inlet section is arranged close to the axial flow fan blade, and the transition section is arranged between the inlet section and the outlet section.

[0011] In the second aspect, an embodiment of the present invention also provides a control method for an air-conditioning outdoor fan, which is applied to an air-conditioning outdoor unit, and the air-conditioning outdoor unit includes the position adjustment device described in the first aspect above, and the method includes: determining the speed of the outdoor fan based on the acquired outdoor ambient temperature and the condenser coil temperature, and controlling the axial flow fan blades to move axially through the position adjustment device; during the axial movement of the axial flow fan blades, the axial movement of the axial flow fan blades is controlled by the position adjustment device according to the absolute temperature difference values ​​recorded at multiple adjacent moments, wherein the absolute temperature difference value is calculated based on the outdoor ambient temperature and the condenser coil temperature.

[0012] Furthermore, the outdoor ambient temperature and the condenser coil temperature are obtained; the absolute value of the difference between the outdoor ambient temperature and the condenser coil temperature is calculated to obtain the absolute temperature difference; if the absolute temperature difference is within a first temperature difference threshold range, the speed of the outdoor fan is adjusted to a low speed; if the absolute temperature difference is within a second temperature difference threshold range, the speed of the outdoor fan is adjusted to a medium speed; if the absolute temperature difference is within a third temperature difference threshold range, the speed of the outdoor fan is adjusted to a high speed.

[0013] Further, if the absolute temperature difference value at the first moment is greater than the absolute temperature difference value at the second moment and the absolute temperature difference value at the second moment is greater than the absolute temperature difference value at the third moment, the axial flow fan blade is controlled by the position adjustment device to stop axial movement; if the absolute temperature difference value at the first moment is less than the absolute temperature difference value at the second moment and the absolute temperature difference value at the second moment is less than the absolute temperature difference value at the third moment, the axial flow fan blade is controlled by the position adjustment device to continue axial movement.

[0014] An embodiment of the present invention provides a position adjustment device and a control method for an outdoor fan of an air conditioner. The position adjustment device includes: a motor connected to the axial fan blade of the outdoor fan unit of the air conditioner; an adjustment component connected to the motor; the adjustment component drives the axial fan blade to move axially by controlling the axial movement of the motor to adjust the axial position between the axial fan blade and the guide ring of the outdoor fan unit of the air conditioner. The control method for the outdoor fan of an air conditioner includes: determining the rotation speed of the outdoor fan according to the obtained outdoor ambient temperature and the condenser coil temperature, and controlling the axial movement of the axial fan blade through the position adjustment device; during the axial movement of the axial fan blade, the axial movement of the axial fan blade is controlled by the position adjustment device according to the absolute temperature difference values ​​recorded at multiple adjacent moments, wherein the absolute temperature difference value is calculated based on the outdoor ambient temperature and the condenser coil temperature. After the embodiment of the present invention determines the speed of the outdoor fan according to the outdoor ambient temperature and the condenser coil temperature, the axial flow fan blades are controlled to move axially through the position adjustment device. During the axial movement, the axial movement of the axial flow fan blades is controlled according to the absolute temperature difference values ​​recorded at multiple adjacent moments to achieve precise control of the air volume of the outdoor fan. This can effectively avoid the problem of over-adjustment of the speed of the air conditioner outdoor fan due to the lag of temperature detection, improve the stability of the air conditioner outdoor unit, and reduce energy consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0016] Figure 1 A schematic structural diagram of an air-conditioning outdoor unit provided by an embodiment of the present invention;

[0017] Figure 2 A schematic structural diagram of a position adjustment device provided in an embodiment of the present invention;

[0018] Figure 3A structure schematic view of the gasket and the power assembly provided by the embodiment of the present application is shown in the figure;

[0019] Figure 4 A structure schematic view of the fixing member provided by the embodiment of the present application is shown in the figure;

[0020] Figure 5 A structure schematic view of the flow guide ring provided by the embodiment of the present application is shown in the figure;

[0021] Figure 6 A flow schematic view of the control method of the outdoor fan of the air conditioner provided by the embodiment of the present application is shown in the figure;

[0022] Figure 7 A sub-flow schematic view of the control method of the outdoor fan of the air conditioner provided by the embodiment of the present application is shown in the figure;

[0023] Figure 8 A schematic view of the mapping relationship between the absolute temperature difference value and the rotation speed of the outdoor fan provided by the embodiment of the present application is shown in the figure;

[0024] Figure 9 A sub-flow schematic view of the control method of the outdoor fan of the air conditioner provided by the embodiment of the present application is shown in the figure;

[0025] Figure 10 A schematic view of the mapping relationship between the absolute temperature difference value and the rotation speed of the outdoor fan provided by the embodiment of the present application is shown in the figure;

[0026] Figure 11 A schematic block diagram of the control device of the outdoor unit of the air conditioner provided by the embodiment of the present application is shown in the figure;

[0027] Figure 12 A schematic block diagram of the outdoor unit of the air conditioner provided by the embodiment of the present application is shown in the figure;

[0028] Reference signs:

[0029] 10, position adjusting device; 11, motor; 12, adjusting assembly; 121, power member; 1211, telescopic part; 1212, mounting part; 122, gasket; 1221, through hole; 123, fixing member; 1231, fixing part; 1232, mounting hole; 100, outdoor unit of air conditioner; 20, axial flow fan blade; 30, support; 40, flow guide ring; 41, inlet section; 42, transition section; 43, outlet section. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are some of the embodiments of the present application, but not all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0031] It will be understood that when used in this specification and the appended claims, the terms “comprises” and “comprising” indicate the presence of described features, integers, steps, operations, elements and / or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or groups thereof.

[0032] It should also be understood that the terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the present invention. As used in the specification and appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms unless the context clearly indicates otherwise.

[0033] It should be further understood that the term "and / or" used in the present description and the appended claims refers to and includes any and all possible combinations of one or more of the associated listed items.

[0034] As used in this specification and the appended claims, the term "if" can be interpreted as "when" or "upon" or "in response to determining" or "in response to detecting," depending on the context. Similarly, the phrase "if it is determined" or "if [described condition or event] is detected" can be interpreted as meaning "upon determination" or "in response to determining" or "upon detection of [described condition or event]" or "in response to detecting [described condition or event]," depending on the context.

[0035] See also Figure 1 In this embodiment, the air conditioner outdoor unit 100 includes a position adjustment device 10, an axial flow fan blade 20, a bracket 30, and a guide ring 40, wherein the position adjustment device 10 is mounted on the bracket 30, the axial flow fan blade 20 is connected to the position adjustment device 10, and the guide ring 40 is arranged close to the position adjustment device 10. Figure 2 In this embodiment, the position adjustment device 10 includes a motor 11 and an adjustment assembly 12. The motor 11 is connected to the axial flow fan blade 20 of the air conditioner outdoor unit 100; the adjustment assembly 12 is connected to the motor 11. The adjustment assembly 12 drives the axial flow fan blade 20 to move axially by controlling the axial movement of the motor 11, thereby adjusting the axial position between the axial flow fan blade 20 and the guide ring 40 of the air conditioner outdoor unit 100. It is understood that the central axis of the guide ring 40 is collinear with the rotation axis of the axial flow fan blade 20.

[0036] See also Figure 2 and Figure 3The adjusting assembly 12 comprises a power assembly, the power assembly comprises a telescopic part 1211 and a mounting part 1212 fixedly connected with the telescopic part 1211, the telescopic part 1211 is used for controlling the axial movement of the axial flow fan blade 20, and the mounting part 1212 is used for mounting the motor 11. It should be noted that in the embodiment, the telescopic part 1211 has a telescopic function, so as to control the axial movement of the motor 11 to drive the axial movement of the axial flow fan blade 20, so as to adjust the position of the axial flow fan blade 20 in the guide ring 40.

[0037] Please continue to refer to Figure 2 and Figure 3 The adjusting assembly 12 further comprises a gasket 122, the position adjusting device 10 is fixedly mounted on the support 30 of the air conditioner outdoor unit 100 through the gasket 122, and the power assembly comprises a plurality of power pieces 121. Each power piece 121 comprises the telescopic part 1211 and the mounting part 1212. Specifically, the power assembly comprises four power pieces 121, and the four power pieces 121 are located at four corners of the gasket 122. More specifically, the gasket 122 is provided with a through hole 1221, and the through hole 1221 is located in the enclosed area of the plurality of power pieces 121. Understandably, in the embodiment, the through hole 1221 is located in the enclosed area of the four power pieces 121, and the motor 11 is mounted in the through hole 1221. Understandably, in other embodiments, the number and position of the power pieces 121 can be set according to actual needs, which are not limited here. It should be noted that in the embodiment, the gasket 122 can provide connection and fixation for the position adjusting device 10 and the support 30.

[0038] Please refer to Figure 2 and Figure 4The adjustment assembly 12 further includes a fixing member 123, which is mounted on the gasket 122. The motor 11 is mounted on the fixing member 123 and is located in the through hole 1221. Specifically, the fixing member 123 includes a fixing portion 1231, and the number of the fixing portions 1231 is equal to the number of the power member 121. Each of the fixing portions 1231 is provided with a mounting hole 1232. It is understandable that the fixing member 123 includes four fixing portions 1231, each of which is provided with a mounting hole 1232. The mounting portion 1212 passes through the mounting hole 1232, and the thread on the mounting portion 1212 is exposed. It is understandable that the four fixing portions 1231 are symmetrical to each other. It should be noted that, in this embodiment, when the fixing member 123 is installed on the power member 121, the fixing portion 1231 abuts against the end away from the gasket 122, and the mounting portion 1212 passes through the mounting hole 1232 and the threads on the mounting portion 1212 are exposed, so that the fixing member 123 and the motor 11 can be fixed using nuts or bolts. It should also be noted that, in this embodiment, the two ends of the fixing member 123 are respectively annular structures, which are more conducive to the stability of the position adjustment device 10; the close fit between the fixing member 123 and the power assembly can provide stable support for the axial movement of the motor 11, that is, the axial movement of the axial flow fan blades 20.

[0039] See also Figure 1 and Figure 5The guide ring 40 is provided with an inlet section 41, a transition section 42 and an outlet section 43. The inlet section 41 is arranged close to the axial flow fan blade 20, and the transition section 42 is arranged between the inlet section 41 and the outlet section 43. It should be noted that in this embodiment, the length L of the guide ring 40 is 70 mm, that is, the sum of the lengths of the inlet section 41, the transition section 42 and the outlet section 43 is the length of the guide ring 40; the inlet section 41 is close to the axial flow fan blade 20, and is designed to be gradually expanded or trumpet-shaped, in order to smoothly guide the incoming external air, reduce wind resistance, and allow external air to enter evenly and smoothly. The transition section 42 is also called a straight-cylinder section, which is arranged between the inlet section 41 and the outlet section 43. Its shape is relatively straight, in order to maintain the stability and speed of the airflow when the axial flow fan blade 20 rotates, and to prevent the airflow from forming vortices or causing noise here. The outlet section 43 is located near the outer panel and grille of the air conditioner outdoor unit 100, helping to push the high-speed rotating air outward, forming a directional, high-speed airflow, improving heat exchange efficiency, while also helping to reduce noise and ensure more concentrated and efficient airflow. It should also be noted that in this embodiment, the axial flow blades 20 are movable along their axial direction, thereby adjusting their axial distance from the guide ring 40. Specifically, when the axial flow blade 20 moves axially toward the guide ring 40, the distance between the axial flow blade 20 and the guide ring 40 decreases, the air volume of the outdoor fan increases, and the power of the outdoor fan does not change much. As shown in Table 1, Table 1 shows simulation data under the condition of an outdoor fan speed of 850 rpm. The blade position in Table 1 refers to the position of the axial flow blade 20 along the length direction of the guide ring 40. As can be seen from Table 1, as the axial flow blade 20 moves axially toward the guide ring 40, that is, the blade position increases from 0 mm to 56 mm, the air volume of the air conditioner's outdoor fan increases from 1965.3 m3 / h to 2115.3 m3 / h, a significant increase of 150 m3 / h, while the power of the outdoor fan does not change much. This further illustrates that adjusting the axial position relationship between the axial flow blade 20 and the guide ring 40 can significantly change the air volume of the air conditioner's outdoor fan.

[0040] Table 1

[0041] Fan blade position mm 0 7 14 28 42 56 <![CDATA[风量m 3 / h]]> 1965.3 1972.9 1993.6 2030.4 2110.6 2115.3 Power w 32.5 32.4 32.5 32.8 33.1 33.1

[0042] It can be understood that the air conditioner includes an indoor unit and the outdoor unit mentioned above, and the indoor unit and the outdoor unit are connected to each other.

[0043] See also Figure 6 , Figure 6 FIG. 1 is a flow chart of a method for controlling an outdoor fan of an air conditioner according to an embodiment of the present invention. The method for controlling an outdoor fan of an air conditioner is described in detail below. Figure 6As shown, the method includes the following steps S110-S120.

[0044] S110, determining the rotation speed of the outdoor fan according to the acquired outdoor ambient temperature and the condenser coil temperature, and controlling the axial flow fan blades to move axially through the position adjustment device;

[0045] In this embodiment, a method for controlling an outdoor fan of an air conditioner is applied to an outdoor air conditioner, the outdoor air conditioner including the position adjustment device described above, the position adjustment device including a motor and an adjustment assembly, wherein the motor is connected to the axial fan blades of the outdoor air conditioner, the adjustment assembly including a power assembly, a gasket, and a fixing member, the power assembly including multiple power members, and the specific structural relationship between the power assembly, the gasket, and the fixing member is as described above. For the sake of simplicity, it is not repeated here. It should be noted that in this embodiment, the outdoor ambient temperature detection unit and the condenser coil temperature detection unit respectively detect the outdoor ambient temperature and the condenser coil temperature in real time to obtain the outdoor ambient temperature and the condenser coil temperature. It is understandable that the outdoor ambient temperature detection unit and the condenser coil temperature detection unit can be temperature sensors or other units capable of detecting temperature. It should also be noted that in this embodiment, after obtaining the outdoor ambient temperature and the condenser coil temperature, the control unit in the outdoor unit determines the speed of the outdoor fan based on the outdoor ambient temperature and the condenser coil temperature. After the speed of the outdoor fan is determined, the axial flow blades are controlled to move axially by the position adjustment device. Specifically, the adjustment component drives the axial flow blades to move axially by controlling the axial movement of the motor to adjust the axial position between the axial flow blades and the guide ring of the air conditioner outdoor unit.

[0046] In some embodiments, such as the present embodiment, Figure 7 As shown, the step S110 may include steps S111-S115.

[0047] S111, obtaining the outdoor ambient temperature and the condenser coil temperature;

[0048] S112, calculating the absolute value of the difference between the outdoor ambient temperature and the condenser coil temperature to obtain the absolute temperature difference;

[0049] S113: If the absolute temperature difference is within a first temperature difference threshold, adjusting the speed of the outdoor fan to a low speed;

[0050] S114: If the absolute temperature difference is within a second temperature difference threshold, adjusting the speed of the outdoor fan to a medium speed;

[0051] S115: If the absolute temperature difference is within a third temperature difference threshold range, adjust the speed of the outdoor fan to a high speed.

[0052] In this embodiment, the absolute value of the difference between the obtained outdoor ambient temperature and the condenser coil temperature is calculated to obtain the absolute temperature difference value, and it is determined whether the absolute temperature difference value is within the first temperature difference threshold range. If the absolute temperature difference value is within the first temperature difference threshold range, the speed of the outdoor fan is adjusted to a low speed; if the absolute temperature difference value is not within the first temperature difference threshold range, it is determined whether the absolute temperature difference value is within the second temperature difference threshold range. If the absolute temperature difference value is within the second temperature difference threshold range, the speed of the outdoor fan is adjusted to a medium speed; if the absolute temperature difference value is not within the second temperature difference threshold range, it can be determined that the absolute temperature difference value is within the third temperature difference threshold range, and the speed of the outdoor fan is adjusted to a high speed. It should be noted that in this embodiment, if Figure 8 As shown, Figure 8 The schematic diagram of the mapping relationship between the absolute temperature difference and the outdoor fan speed provided in the embodiment of the present invention is as follows: Figure 8 In the embodiment, the first temperature difference threshold range is 0 degrees Celsius to 5 degrees Celsius, including 0 degrees Celsius but excluding 5 degrees Celsius; the second temperature difference threshold range is 5 degrees Celsius to 10 degrees Celsius, including 5 degrees Celsius but excluding 10 degrees Celsius; the third temperature difference threshold range is greater than or equal to 10 degrees Celsius. It is understandable that if the absolute temperature difference value is greater than or equal to 0 degrees Celsius and less than 5 degrees Celsius, the speed gear of the outdoor fan is adjusted to a low gear; if the absolute temperature difference value is greater than or equal to 5 degrees Celsius and less than 10 degrees Celsius, the speed gear of the outdoor fan is adjusted to a medium gear; if the absolute temperature difference value is greater than or equal to 10 degrees Celsius, the speed gear of the outdoor fan is adjusted to a high gear. It should also be noted that in this embodiment, as long as the speed of the outdoor fan is adjusted, the position of the axial flow blades will be controlled to return to 0 mm so that the axial flow blades can be re-controlled for axial movement.

[0053] S120. During the axial movement of the axial flow fan blade, the axial movement of the axial flow fan blade is controlled by the position adjustment device according to the absolute temperature difference values ​​recorded at multiple adjacent moments, wherein the absolute temperature difference value is calculated based on the outdoor ambient temperature and the condenser coil temperature.

[0054] In this embodiment, after the speed of the outdoor fan is determined, that is, after the speed of the outdoor unit is adjusted to the corresponding gear, the axial fan blade begins to move slowly and uniformly from the axial position of 0mm to the 56mm position. During the movement, the air volume of the outdoor unit gradually increases, which helps to improve the heat exchange efficiency of the condenser, thereby controlling the temperature difference between the outdoor ambient temperature and the condenser coil temperature. During the axial movement of the axial fan blade, the control unit in the outdoor unit controls the axial movement of the axial fan blade through the position adjustment device according to the absolute temperature difference values ​​recorded at multiple adjacent moments, wherein the absolute temperature difference value is calculated based on the outdoor ambient temperature and the condenser coil temperature. Specifically, the absolute temperature difference values ​​at multiple adjacent moments include the absolute temperature difference value at the first moment, the absolute temperature difference value at the second moment, and the absolute temperature difference value at the third moment; in some embodiments, such as in this embodiment, as Figure 9 As shown, the step S120 may include steps S121-S122: S121, if the absolute temperature difference value at the first moment is greater than the absolute temperature difference value at the second moment and the absolute temperature difference value at the second moment is greater than the absolute temperature difference value at the third moment, then the position adjustment device is used to control the axial flow fan blade to stop axial movement; S122, if the absolute temperature difference value at the first moment is less than the absolute temperature difference value at the second moment and the absolute temperature difference value at the second moment is less than the absolute temperature difference value at the third moment, then the position adjustment device is used to control the axial flow fan blade to continue axial movement. It should be noted that, in this embodiment, if it is assumed that the first moment is moment t, the second moment is moment t+1, and the third moment is moment t+2, it can be understood that if it is assumed that the first moment is moment t-2, the second moment may also be moment t-1, and the third moment is moment t, that is, it is sufficient that the first moment, the second moment and the third moment are sequentially adjacent moments. It should also be noted that, in this embodiment, if Figure 10 As shown, Figure 10 The schematic diagram of the mapping relationship between the absolute temperature difference change trend and the axial movement provided by the embodiment of the present invention is shown in FIG. Figure 10In the figure, the horizontal axis is the changing trend of the absolute temperature difference, and the vertical axis is the axial movement distance of the axial fan blades. If the absolute temperature difference at the first moment is greater than the absolute temperature difference at the second moment and the absolute temperature difference at the second moment is greater than the absolute temperature difference at the third moment, it indicates that the absolute temperature difference has a tendency to decrease, and the heat dissipation capacity of the heat exchanger is sufficient, so the axial fan blades are controlled to stop axial movement; if the absolute temperature difference at the first moment is less than the absolute temperature difference at the second moment and the absolute temperature difference at the second moment is less than the absolute temperature difference at the third moment, it indicates that the absolute temperature difference has a tendency to increase, the heat dissipation capacity of the radiator is insufficient, and a larger air volume is required, so the axial fan blades are controlled to continue to move toward the position of 56mm, and the maximum safe distance of movement is at the 56mm position, and the axial fan blades are controlled to stop axial movement.

[0055] In summary, the axial movement of the axial flow fan blades is a process of dynamic adjustment. In actual operation, the outdoor ambient temperature and the condenser coil temperature are a process of dynamic change. Therefore, the process of adjusting the outdoor fan speed and the axial movement of the axial flow fan blades is also a dynamic cycle process. By controlling the outdoor fan of the air conditioner through the above-mentioned control method of the outdoor fan of the air conditioner, on the one hand, the number of times the speed of the air conditioner outdoor unit is adjusted can be reduced; on the other hand, because the axial movement of the axial flow fan blades can change the air volume of the outdoor fan, it can provide more accurate air volume control capabilities, and can effectively avoid the situation where the speed of the outdoor fan has reached the requirement due to a certain lag in temperature detection, but the speed of the outdoor fan is still adjusted, which effectively avoids the problem of over-adjustment of the outdoor fan, improves the stability of the outdoor unit of the air conditioner, and reduces energy consumption.

[0056] Figure 11 FIG. 2 is a schematic block diagram of a control device 200 for an air-conditioning outdoor unit provided by an embodiment of the present invention. Figure 11 As shown, corresponding to the above control method for an air conditioner outdoor fan, the present invention further provides a control device 200 for an air conditioner outdoor fan. The control device 200 for an air conditioner outdoor fan includes a unit for executing the above control method for an air conditioner outdoor fan, and the device can be configured in the air conditioner outdoor fan. Figure 11 The control device 200 of the air-conditioning outdoor unit includes a first control unit 201 and a second control unit 202 .

[0057] Among them, the first control unit 201 is used to determine the speed of the outdoor fan according to the acquired outdoor ambient temperature and the condenser coil temperature, and control the axial movement of the axial flow fan blades through the position adjustment device; the second control unit 202 is used to control the axial movement of the axial flow fan blades through the position adjustment device according to the absolute temperature difference values ​​recorded at multiple adjacent moments during the axial movement of the axial flow fan blades, wherein the absolute temperature difference value is calculated based on the outdoor ambient temperature and the condenser coil temperature.

[0058] In some embodiments, such as this embodiment, the first control unit 201 includes an acquisition unit, a calculation unit, a first adjustment unit, a second adjustment unit, and a third adjustment unit.

[0059] Among them, the acquisition unit is used to obtain the outdoor ambient temperature and the condenser coil temperature; the calculation unit is used to calculate the absolute value of the difference between the outdoor ambient temperature and the condenser coil temperature to obtain the absolute temperature difference value; the first adjustment unit is used to adjust the speed of the outdoor fan to a low speed if the absolute temperature difference value is within a first temperature difference threshold range; the second adjustment unit is used to adjust the speed of the outdoor fan to a medium speed if the absolute temperature difference value is within a second temperature difference threshold range; the third adjustment unit is used to adjust the speed of the outdoor fan to a high speed if the absolute temperature difference value is within a third temperature difference threshold range.

[0060] In some embodiments, such as this embodiment, the second control unit 202 includes a first control subunit and a second control subunit.

[0061] Among them, the first control subunit is used to control the axial flow fan blade to stop axial movement through the position adjustment device if the absolute temperature difference value at the first moment is greater than the absolute temperature difference value at the second moment and the absolute temperature difference value at the second moment is greater than the absolute temperature difference value at the third moment; the second control subunit is used to control the axial flow fan blade to continue axial movement through the position adjustment device if the absolute temperature difference value at the first moment is less than the absolute temperature difference value at the second moment and the absolute temperature difference value at the second moment is less than the absolute temperature difference value at the third moment.

[0062] The control device of the air conditioner outdoor unit can be implemented in the form of a computer program. The computer program can be used in Figure 12 The air conditioner outdoor unit is shown running.

[0063] See also Figure 12 , Figure 12 1 is a schematic block diagram of an air-conditioning outdoor unit provided by an embodiment of the present invention. The air-conditioning outdoor unit 300 is a device having a control function for an air-conditioning outdoor fan.

[0064] See Figure 12 The air conditioner outdoor unit 300 includes a processor 302 , a memory, and a network interface 305 connected via a system bus 301 , wherein the memory may include a non-volatile storage medium 303 and an internal memory 304 .

[0065] The non-volatile storage medium 303 can store an operating system 3031 and a computer program 3032. When the computer program 3032 is executed, the processor 302 can execute a method for controlling an outdoor fan of an air conditioner.

[0066] The processor 302 is used to provide computing and control capabilities to support the operation of the entire air-conditioning outdoor unit 300 .

[0067] The internal memory 304 provides an environment for the operation of the computer program 3032 in the non-volatile storage medium 303. When the computer program 3032 is executed by the processor 302, the processor 302 can execute a method for controlling an outdoor fan of an air conditioner.

[0068] The network interface 305 is used to communicate with other devices through the network. Figure 12 The structure shown in the figure is merely a block diagram of a portion of the structure related to the solution of the present invention, and does not constitute a limitation on the air-conditioning outdoor unit 300 to which the solution of the present invention is applied. The specific air-conditioning outdoor unit 300 may include more or fewer components than those shown in the figure, or combine certain components, or have a different component arrangement.

[0069] The processor 302 is configured to run a computer program 3032 stored in a memory to implement any embodiment of the above-mentioned method for controlling an outdoor fan of an air conditioner.

[0070] It should be understood that in the embodiment of the present invention, the processor 302 may be a central processing unit (CPU), or may be other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field-programmable gate arrays (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor may be a microprocessor or any conventional processor.

[0071] Those skilled in the art will appreciate that all or part of the steps in the method of the above-described embodiment can be implemented by instructing the relevant hardware through a computer program. The computer program can be stored in a computer-readable storage medium. The computer program is executed by at least one processor in the computer system to implement the steps in the method of the above-described embodiment.

[0072] Therefore, the present invention further provides a storage medium. The storage medium may be a computer-readable storage medium. The storage medium stores a computer program. When executed by a processor, the computer program causes the processor to execute any embodiment of the above-mentioned method for controlling an outdoor fan of an air conditioner.

[0073] The storage medium may be any computer-readable storage medium that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a magnetic disk, or an optical disk.

[0074] Those skilled in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of the two. In order to clearly illustrate the interchangeability of hardware and software, the above description has generally described the composition and steps of each example according to function. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of the present invention.

[0075] In the several embodiments provided herein, it should be understood that the disclosed devices and methods can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the division of the various units is merely a logical functional division, and actual implementation may employ other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be omitted or not implemented.

[0076] The steps in the methods of the embodiments of the present invention may be adjusted in order, combined, or deleted as needed. The units in the devices of the embodiments of the present invention may be combined, divided, or deleted as needed. Furthermore, the functional units in the various embodiments of the present invention may be integrated into a single processing unit, each unit may exist physically separately, or two or more units may be integrated into a single unit.

[0077] If this integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a storage medium. Based on this understanding, the technical solution of the present invention, or the portion that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product, stored in a storage medium, includes several instructions for causing an air conditioner outdoor unit to execute all or part of the steps of the method described in various embodiments of the present invention.

[0078] In the above embodiments, the description of each embodiment has its own focus. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0079] Obviously, those skilled in the art may make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, to the extent such changes and modifications fall within the scope of the claims and their equivalents, the present invention is intended to encompass such changes and modifications.

[0080] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in the present invention, and such modifications or substitutions are intended to be within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be subject to the scope of protection of the claims.

Claims

1. A position adjustment device, applied to an air conditioner outdoor unit, characterized in that: include: a motor connected to the axial flow fan blades of the air conditioner outdoor unit; an adjusting assembly connected to the motor; The adjusting assembly drives the axial flow fan blade to move axially by controlling the axial movement of the motor, so as to adjust the axial position between the axial flow fan blade and the guide ring of the air conditioner outdoor unit; The adjustment assembly includes a power assembly, the power assembly includes a telescopic portion and a mounting portion fixedly connected to the telescopic portion, the telescopic portion is used to control the axial flow fan blade to move axially, and the mounting portion is used to mount the motor; The adjustment assembly further includes a gasket, through which the position adjustment device is fixedly mounted on the bracket of the air conditioner outdoor unit. The power assembly includes a plurality of power members, each of which includes the telescopic portion and the mounting portion. The gasket is provided with a through hole, the through hole is located in the enclosed area where the plurality of power components are located, and the motor is installed in the through hole; The adjustment assembly further includes a fixing member, the fixing member is mounted on the gasket, the motor is mounted on the fixing member and is located in the through hole; The fixing member includes a fixing portion, the number of the fixing portions is equal to the number of the power members, each of the fixing portions is provided with a mounting hole, the mounting portion passes through the mounting hole and the thread on the mounting portion is exposed.

2. The position adjustment device according to claim 1, characterized in that: The guide ring is provided with an inlet section, a transition section and an outlet section. The inlet section is arranged close to the axial flow fan blade, and the transition section is arranged between the inlet section and the outlet section.

3. A control method for an outdoor fan of an air conditioner, applied to an outdoor unit of an air conditioner, characterized in that: The air conditioner outdoor unit includes the position adjustment device according to any one of claims 1 to 2, and the method includes: Determine the rotation speed of the outdoor fan according to the acquired outdoor ambient temperature and the condenser coil temperature, and control the axial flow fan blades to move axially through the position adjustment device; During the axial movement of the axial flow fan blade, the axial movement of the axial flow fan blade is controlled by the position adjustment device according to the absolute temperature difference values ​​recorded at multiple adjacent moments, wherein the absolute temperature difference value is calculated based on the outdoor ambient temperature and the condenser coil temperature.

4. The control method of the outdoor fan of the air conditioner according to claim 3, characterized in that: The step of determining the rotation speed of the outdoor fan according to the acquired outdoor ambient temperature and the condenser coil temperature includes: Obtaining the outdoor ambient temperature and the condenser coil temperature; Calculating the absolute value of the difference between the outdoor ambient temperature and the condenser coil temperature to obtain the absolute temperature difference; If the absolute temperature difference is within a first temperature difference threshold, adjusting the speed of the outdoor fan to a low speed; If the absolute temperature difference is within a second temperature difference threshold, adjusting the speed of the outdoor fan to a medium speed; If the absolute temperature difference is within a third temperature difference threshold range, the speed of the outdoor fan is adjusted to a high speed.

5. The control method of the outdoor fan of the air conditioner according to claim 3, characterized in that: The absolute temperature difference values ​​at multiple adjacent moments include the absolute temperature difference value at a first moment, the absolute temperature difference value at a second moment, and the absolute temperature difference value at a third moment; The step of controlling the axial movement of the axial flow fan blade by the position adjustment device according to the absolute temperature difference values ​​recorded at multiple adjacent moments includes: If the absolute temperature difference at the first moment is greater than the absolute temperature difference at the second moment and the absolute temperature difference at the second moment is greater than the absolute temperature difference at the third moment, the position adjustment device is used to control the axial flow fan blade to stop axial movement; If the absolute temperature difference at the first moment is smaller than the absolute temperature difference at the second moment and the absolute temperature difference at the second moment is smaller than the absolute temperature difference at the third moment, the position adjustment device is used to control the axial flow blade to continue axial movement.

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