Protective device of air conditioner outdoor unit, air conditioner outdoor unit and control method of air conditioner outdoor unit

Abstract

The embodiment of the invention provides a protection device of an air conditioner outdoor unit, the protection device is arranged on a shell of the air conditioner outdoor unit and located at a ventilation opening of the shell so as to protect the ventilation opening, the protection device comprises a base arranged on the shell and used for fixing the protection device; the protection plate is rotatably arranged on the base, and the shielding degree of the protection plate to the ventilation opening is changed by rotating the protection plate; the motor is fixedly arranged on the base and used for driving the protection plate to rotate; and the control part is used for controlling the motor to rotate so as to drive the protection plate to rotate. The ventilation opening of the air conditioner outdoor unit can be fully protected.

Description

Technical Field

[0001] This application relates to the field of air conditioning technology, specifically to a protective device for an air conditioning outdoor unit, an air conditioning outdoor unit, and a control method for the air conditioning outdoor unit. Background Technology

[0002] The top-discharge air conditioner outdoor unit is the core of the air conditioning system's heat dissipation. Installed high outdoors, it relies on top vents to achieve airflow exchange, dissipating heat for internal components and ensuring stable operation of the entire unit. Although existing vents are equipped with grilles and fixed air guide structures, gaps inevitably exist between the structures to meet ventilation requirements, which limits the protective design of the vents.

[0003] These limitations make it difficult for the ventilation openings to provide reliable protection in outdoor environments. External environmental factors can easily penetrate the outdoor unit through this area, affecting not only the operational stability of core components but also potentially triggering a chain reaction of problems. This can adversely impact the overall efficiency and lifespan of the equipment, making it a significant weakness in the outdoor use of outdoor units.

[0004] The industry has tried to improve ventilation by increasing the density of the grilles, adding fixed protective covers, or using simple rain control devices. However, these solutions either reduce the ventilation and heat dissipation effect due to structural adjustments, fail to adapt to changing weather, or create new operational hazards due to simple control logic. None of these solutions have provided ideal protection for the ventilation openings, and there is an urgent need for technical solutions that can optimize the protection effect. Summary of the Invention

[0005] The purpose of this invention is to solve the above-mentioned problems and other issues.

[0006] Another objective of this invention is to provide a protective device that can adequately protect the ventilation openings of an air conditioning unit.

[0007] Another objective of this invention is to provide an air conditioner outdoor unit that can adequately protect the ventilation openings.

[0008] Another objective of this invention is to provide a control method for an air conditioner outdoor unit that can simultaneously protect the ventilation openings and dissipate heat.

[0009] The purpose of this invention is not limited to the purposes mentioned above, and those skilled in the art will clearly understand other purposes not mentioned from the following description.

[0010] In some embodiments of this application, a protective device for an air conditioner outdoor unit is provided. The protective device is disposed on the housing of the air conditioner outdoor unit and located at the ventilation opening of the housing to protect the ventilation opening. The protective device includes: A base, which is disposed on the housing, is used to fix the protective device; A protective plate, which is rotatably mounted on the base, and the degree of obstruction of the ventilation opening is changed by rotating the protective plate; An electric motor, fixed to the base, is used to drive the protective plate to rotate; The control unit is used to control the rotation of the motor so as to drive the protective plate to rotate.

[0011] The above-mentioned technical solution has the following advantages or beneficial effects: The protective device is firmly fixed to the shell by the base, ensuring that the device is not easily loosened in outdoor environments, providing a reliable installation foundation for the ventilation opening protection, and avoiding protection failure due to device displacement. The rotatable design of the protective plate breaks through the limitations of fixed protective structures, and can flexibly adapt to different scenarios by adjusting the degree of obstruction—it can enhance the obstruction of the ventilation opening when protection is needed, and reduce the obstruction when heat dissipation is needed, balancing protection and heat dissipation requirements, and avoiding the problems of insufficient protection or obstruction of heat dissipation by fixed structures. The motor provides precise power for the rotation of the protective plate, and with the control unit's regulation, the protective plate can be automatically and controllably adjusted without manual operation. It can quickly respond to changes in the outdoor environment, effectively reducing the impact of external factors on the ventilation opening and the internal components of the outdoor unit, thereby improving the operational stability of the air conditioning outdoor unit and extending the service life of the equipment.

[0012] In some embodiments of this application, a protective device for an air conditioner outdoor unit is provided, wherein one end of the base is disposed on the housing for fixing the protective device; The other end of the base forms an air vent, which is located above and connected to the ventilation opening. The protective plate is located at the air vent of the base.

[0013] The above-mentioned technical solution has the following advantages or beneficial effects: In this protective device, one end of the base is fixed to the shell, allowing for stable installation in outdoor wind, rain, and vibration environments. This prevents the device from loosening and shifting, thus avoiding protective failure and providing reliable structural support for the ventilation opening protection. The air vent at the other end of the base corresponds vertically to and connects with the outdoor unit's ventilation opening, precisely aligning with the existing ventilation path. This ensures that airflow can smoothly pass through the air vent and enter the ventilation opening, preventing the protective device from further obstructing the cooling airflow and ensuring that the outdoor unit's basic cooling efficiency is not affected. Simultaneously, the protective plate is directly located at the air vent, allowing for direct adjustment of the airflow channel: when protection is needed, the protective plate can specifically block the air vent, preventing rainwater and debris from entering; when cooling is needed, the protective plate reduces obstruction, ensuring efficient airflow. This design enhances the targeted nature of the ventilation opening protection while also considering cooling needs, effectively avoiding the problems of traditional protective structures easily obstructing ventilation or providing insufficient protection.

[0014] In some embodiments of this application, a protective device for an air conditioner outdoor unit is provided, wherein the protective plate includes a first protective plate and a second protective plate; The first protective plate rotates around a first rotating axis, and the second protective plate rotates around a second rotating axis. The first and second rotating axes are arranged parallel to each other on the base and distributed on opposite sides of the air vent.

[0015] The above-mentioned technical solution has the following advantages or beneficial effects: The protective device divides the protective plate into a first protective plate and a second protective plate, and the two rotate around rotation axes parallel to opposite sides of the air vent, bringing multiple advantages: Firstly, the independent rotation design of the two plates breaks through the limitations of single-plate adjustment, and the rotation angle of one or two plates can be flexibly controlled according to actual needs, realizing fine adjustment of the degree of air vent obstruction—for example, in light rain, only one protective plate needs to be slightly adjusted, which can block rainwater while maximizing the preservation of ventilation space, avoiding the need for adjusting only one plate. Firstly, it addresses the issue of significantly impacting ventilation. Secondly, the parallel and separately positioned rotating axes ensure that the two panels do not interfere with each other during rotation and operate stably. At the same time, when the two panels are closed, they move from both sides of the air vent towards the center, providing more comprehensive coverage of the air vent and reducing gaps where rainwater and debris can seep in from the edges of the air vent. Thirdly, the coordinated adjustment of the two panels can adapt to more scenarios. For example, when there is strong wind and slanting rain on one side, the shielding angle of the corresponding side's protective panel can be adjusted to be larger, while the other side maintains ventilation, balancing protection and heat dissipation efficiency, effectively avoiding the shortcomings of traditional single-panel adjustment in terms of flexibility.

[0016] In some embodiments of this application, a protective device for an air conditioner outdoor unit is provided, wherein the motor includes: A first motor is mounted on the base, and the first shaft of the first motor drives the first protective plate to rotate. A second motor is mounted on the base, and the second motor's second shaft drives the second protective plate to rotate. The base has a first through hole and a second through hole on its two opposite side walls; the first protective plate has a first rotating through hole and a first rotating component on its opposite sides; the first rotating shaft includes a first rotating component and a first rotating shaft. The first rotating shaft is inserted into the first rotating through hole through the first through hole on the outside of the base, and the first rotating component is inserted into the second through hole from the inside of the base. The base is provided with a third through hole and a fourth through hole on its two opposite side walls; the second protective plate is provided with a second rotating through hole and a second rotating component on its opposite sides; the second rotating shaft includes a second rotating component and a second rotating shaft. The second rotating shaft is inserted into the second rotating through hole through the third through hole on the outside of the base, and the second rotating component is inserted into the fourth through hole from the inside of the base.

[0017] The above-mentioned technical solution has the following advantages or beneficial effects: This protective device, through a dual-motor dedicated drive structure, enables the first motor and the second motor to independently drive the first and second protective plates, respectively, achieving completely independent adjustment of the angles of the two protective plates. This overcomes the limitation of the traditional linkage adjustment structure where "one adjustment results in synchronous action." When facing uneven environments such as unilateral slanting rain or localized strong winds, the shielding angle of a single protective plate can be adjusted to enhance local protection, while the other protective plate maintains a suitable angle to ensure ventilation. This effectively balances the protection and heat dissipation needs under complex working conditions, avoiding insufficient protection or obstructed heat dissipation caused by overall adjustment. Simultaneously, the first to fourth through holes on the side wall of the base, the rotating parts of the protective plates, and the motor shaft form a bidirectional cooperation structure. The motor shaft passes through the rotating through hole of the protective plate from the outside of the base, and the rotating parts of the protective plates are inserted into the corresponding through hole from the inside of the base. This bidirectional positioning design effectively limits the radial offset of the protective plate during rotation. Even under harsh conditions such as outdoor vibration and strong winds, the angle adjustment accuracy of the protective plates can be maintained, preventing gaps in protection or obstruction of ventilation channels due to structural loosening, and ensuring the operational stability of the device. In addition, both the first and second motors are located on the outside of the base. When the motors are inspected or replaced in the future, it is not necessary to disassemble the internal structure of the base. This simplifies the maintenance process and avoids secondary damage to the internal protective structure of the base during maintenance operations, thereby extending the overall service life of the device and ensuring long-term reliable operation.

[0018] In some embodiments of this application, a protective device for an air conditioner outdoor unit is provided, wherein the base is formed with a water collection cavity for collecting and discharging liquid flowing onto the protective plate.

[0019] The above-mentioned technical solution has the following advantages or beneficial effects: The water collection chamber formed by the base can specifically collect liquid flowing from the protective plate, preventing liquid from flowing randomly on the base surface and seeping into the outdoor unit through the installation gap between the base and the housing. This reduces the probability of liquid contacting core components such as the compressor and controller, lowering the risk of corrosion and short circuits caused by moisture, and ensuring the operational safety of the core components of the outdoor unit. Simultaneously, the water collection chamber also has a drainage function, promptly draining the collected liquid to prevent it from accumulating and overflowing. This prevents problems such as base corrosion and water accumulation inside the outdoor unit due to overflowing liquid, ensuring the continuous functioning of the water collection chamber. Furthermore, this design relies on the base's own structure to form the water collection chamber, eliminating the need for additional complex drainage components. While strengthening liquid protection, it does not occupy additional space in the outdoor unit or compromise the overall structural stability of the protective device, further ensuring the long-term reliable operation of the air conditioning outdoor unit.

[0020] In some embodiments of this application, a protective device for an air conditioner outdoor unit is provided, wherein the vent is located at the top of the housing; The housing includes: A top cover is provided at the vent, and the top cover is hollowed out so that the vent can exchange gas with the outside through the top cover; The top cover is provided with a drain hole, and the bottom of the water collection chamber abuts against the top cover at the drain hole, through which the liquid in the water collection chamber is discharged.

[0021] The above-mentioned technical solution has the following advantages or beneficial effects: The vent is located at the top of the casing, with a perforated top cover, which ensures air exchange between the vent and the outside environment, meeting the basic heat dissipation requirements of the outdoor unit, while the top cover provides initial protection for the vent, reducing the direct inflow of large debris. The design of the drain hole on the top cover abutting the bottom of the water collection chamber allows the liquid collected in the water collection chamber (such as rainwater) to be accurately discharged through the drain hole, preventing liquid accumulation and overflow from seeping into the outdoor unit, further reducing the risk of moisture corrosion to core components such as the compressor and controller. Simultaneously, this design utilizes the existing drain hole on the top cover of the casing for drainage, eliminating the need for additional holes in the casing, reducing modifications to the machine structure, lowering processing costs, and reducing the risk of machine damage. Furthermore, the abutting fit between the water collection chamber and the drain hole ensures the sealing of the drainage path, preventing liquid leakage at the connection point, ensuring efficient and reliable drainage, and providing long-term protection and stable operation for the top vent of the outdoor unit.

[0022] In some embodiments of this application, a protective device for an air conditioner outdoor unit is provided, wherein a condensation pipe is provided inside the casing of the air conditioner outdoor unit, and the liquid discharged from the water collection chamber is poured onto the outside of the casing at the location of the condensation pipe.

[0023] The above technical solution has the following advantages or beneficial effects: the liquid discharged from the water collection chamber is poured onto the outside of the shell where the condenser pipe is located. The physical effect of liquid evaporation and heat absorption can reduce the temperature of the outside of the shell. This temperature change is further conducted to the condenser pipe inside the shell, assisting the condenser pipe in heat dissipation. Especially in high-temperature environments or when the opening and closing angle of the protective plate is reduced to enhance protection, resulting in a decrease in ventilation and heat dissipation efficiency, it can effectively compensate for heat loss, avoid the condenser pipe from reducing the refrigerant heat exchange efficiency due to insufficient heat dissipation, and thus prevent the compressor exhaust temperature from exceeding the standard, ensuring the stable cooling / heating performance of the outdoor unit of the air conditioner.

[0024] Meanwhile, this design makes full use of the liquid (such as rainwater) collected in the water collection chamber, eliminating the need for an external water source or additional auxiliary heat dissipation components. This not only turns waste into treasure but also avoids additional energy consumption and structural complexity, reducing equipment costs. Furthermore, the liquid only acts on the outside of the casing, without directly contacting the core electrical components inside. This improves heat dissipation while avoiding the risks of short circuits and corrosion caused by liquid intrusion, balancing heat dissipation optimization and operational safety, further ensuring the long-term reliable operation of the air conditioner's outdoor unit.

[0025] In some embodiments of this application, a protective device for an air conditioner outdoor unit is provided. The housing is provided with a rain sensor located at the vent. When the protective plate is in its initial state, the rain sensor is blocked.

[0026] The above technical solution has the following advantages or beneficial effects: the rain sensor is located at the ventilation opening, which can directly detect the rainfall in the ventilation opening area. This avoids the detection deviation caused by uneven rainfall distribution due to the rain sensor being installed off-center from key areas (such as other sides of the outdoor unit). It ensures that the dynamics of rainwater approaching the ventilation opening can be captured in a timely and accurate manner, providing direct and effective rainfall data support for the adjustment of the protective plate. This ensures that the protective action responds in a timely manner to the risk of intrusion into the ventilation opening and reduces the probability of rainwater seepage.

[0027] In its initial state (typically fully closed in standby mode), the protective plate shields the rain sensor, isolating it from outdoor dust, fallen leaves, and direct sunlight when the protective device is not activated. This prevents debris from affecting detection accuracy and protects the rain sensor from long-term exposure to harsh environments, effectively extending its lifespan. Furthermore, this design eliminates the need for additional sensor protection structures, dynamically switching between protection during non-operation and exposure during operation via the protective plate itself. This simplifies the overall structure of the protective device, reduces costs, and ensures stable data collection from the rain sensor after the equipment is operational, further enhancing the reliability of the protective device.

[0028] In some embodiments of this application, an outdoor unit for an air conditioner is provided, comprising: A housing having a receiving cavity formed within it, and a vent forming within the housing for allowing gas exchange between the receiving cavity and the outside environment; and The protective device as described in any of the preceding claims is disposed on the housing.

[0029] The above-mentioned technical solution has the following advantages or beneficial effects: By adapting any of the aforementioned protective devices to the ventilation openings of the air conditioner outdoor unit, the outdoor unit can specifically solve the problem of outdoor protection of the ventilation openings while retaining the function of the housing cavity interacting with the outside gas. The protective device can rely on its own structure (such as a rotatable protective plate, a water collection cavity, etc.) to block rainwater and debris from entering the ventilation openings, preventing the core components such as the compressor and controller inside the housing cavity from getting damp, corroded, or blocked. At the same time, with the adjustment capability of the protective device (such as the motor driving the angle change of the protective plate), it can flexibly adapt to different scenarios, which can not hinder ventilation and heat dissipation, but also enhance the protective effect, balancing the core contradiction between the outdoor unit's need for ventilation and protection.

[0030] Furthermore, various optimized designs of the protective device (such as independent dual-motor drive, rain sensor protection, and drainage utilization of the water collection chamber) can directly benefit the housing: for example, the liquid drained from the water collection chamber can assist in heat dissipation of the condenser pipes, reducing the outdoor unit's energy consumption; the protective plate initially shields the rain sensor, reducing the probability of the sensor being affected by environmental interference. Moreover, the adaptation of the protective device to the housing does not require significant modifications to the machine structure, achieving both enhanced protection and reduced modification and maintenance costs, further ensuring the long-term stable operation of the air conditioner's outdoor unit.

[0031] In some embodiments of this application, a control method for an air conditioner outdoor unit is provided, wherein the air conditioner outdoor unit includes the protective device for the air conditioner outdoor unit as described in any one of the above claims, comprising: Based on the air conditioner start command, the motor is controlled to rotate, thereby driving the protective plate to rotate to the set opening and closing angle; Control the compressor in the outdoor unit of the air conditioner to start, and obtain the rainfall value in the environment where the outdoor unit of the air conditioner is located; Control the motor to rotate, driving the protective plate to rotate to the target opening angle corresponding to the rainfall value.

[0032] The above technical solution has the following advantages or beneficial effects: This control method provides precise protection and heat dissipation balance for the operation of the outdoor unit of the air conditioner by starting a preset and dynamically adapted orderly process: Based on the start command, the protective plate is first controlled to turn to the set opening angle, which can build a basic ventilation channel before the compressor starts, avoid heat dissipation obstruction caused by the protective plate being in an improper state such as being fully closed in the early stage of compressor start-up, prevent the exhaust temperature from rising sharply, ensure the operation safety of the compressor during the start-up stage, and avoid the risk of failure caused by insufficient heat dissipation during start-up.

[0033] After the compressor starts, the protective plate is adjusted to the target angle based on the real-time rainfall value, instead of operating at a fixed angle. This allows for dynamic adaptation of the protection level according to the actual rainfall intensity. When the rainfall is light, a larger opening angle is maintained to ensure heat dissipation efficiency, while the angle is reduced when the rainfall is heavy to enhance the rainproof effect. This effectively avoids the problems of insufficient heat dissipation caused by traditional one-size-fits-all control (such as fully closing the protective plate in light rain) or rainwater intrusion caused by ignoring changes in rainfall and maintaining a fixed angle.

[0034] The entire process is tightly integrated and logically clear, ensuring equipment stability during startup while responding to changes in the outdoor environment in real time, accurately balancing heat dissipation and protection needs, and further improving the reliability and energy efficiency of the air conditioner outdoor unit.

[0035] In some embodiments of this application, a control method for an air conditioner outdoor unit is provided. After controlling the motor to rotate so as to drive the protective plate to rotate to the target opening angle corresponding to the rainfall value, the method further includes: Repeat the acquisition of the rainfall value; The motor is controlled to rotate according to the rainfall value, which in turn drives the protective plate to rotate, thereby dynamically adjusting the opening and closing angle of the protective plate. The rainfall value and the opening and closing angle of the protective plate are negatively correlated.

[0036] The above-mentioned technical solution has the following advantages or beneficial effects: This control method dynamically adjusts the opening and closing angle of the protective plate by repeatedly acquiring rainfall values ​​and using a negative correlation. It can respond in real time to changes in outdoor rainfall intensity, effectively avoiding the limitations of traditional single-adjustment or fixed-angle control. When the rainfall intensity increases, the opening and closing angle of the protective plate decreases synchronously with the increase in rainfall, which can promptly strengthen the shielding of the ventilation opening and prevent rainwater from seeping into the air conditioner outdoor unit due to insufficient protection, thus avoiding moisture and corrosion of core components. When the rainfall intensity decreases, the opening and closing angle of the protective plate increases synchronously with the decrease in rainfall, which can quickly restore the ventilation area, ensure the heat dissipation efficiency of the condenser, and prevent the compressor exhaust temperature from exceeding the standard due to an excessively small angle. This dynamic adaptation mechanism does not require manual intervention. It can accurately balance the protection and heat dissipation needs when rainfall changes, and avoid the equipment operation risks caused by adjustment lag when rainfall fluctuates. At the same time, it reduces unnecessary frequent and large-scale adjustments of the protective plate, reduces the wear and tear on the motor and protective plate transmission structure, and further improves the stability and service life of the air conditioner outdoor unit.

[0037] In some embodiments of this application, a control method for an outdoor unit of an air conditioner is provided, wherein the protective plate includes a first protective plate and a second protective plate, and the first protective plate is located above the second protective plate when it overlaps with the second protective plate; Controlling the motor to rotate, thereby driving the protective plate to rotate, includes: When increasing the opening angle of the protective plate, first control the rotation of the first protective plate, and then control the rotation of the second protective plate; When reducing the opening angle of the protective plate, first control the rotation of the second protective plate, and then control the rotation of the first protective plate.

[0038] The above technical solution has the following advantages or beneficial effects: This control method sets the adjustment sequence based on the overlapping position of the two protective plates, which can effectively avoid adjustment risks and enhance the protective effect. When increasing the opening angle, the upper first protective plate is driven to rotate first, and then the lower second protective plate is adjusted. Since the first protective plate is initially located on top, opening it first will not obstruct or hinder the rotation of the lower second protective plate, ensuring that the adjustment process of the two plates is smooth and without jamming, avoiding motor overload or transmission structure wear caused by improper sequence, and extending the service life of components.

[0039] When reducing the opening angle, first rotate the lower second protective plate, then close the upper first protective plate. The closing of the second protective plate first forms a basic shield, and then the closing of the first protective plate covers its edge gaps, strengthening the synergistic sealing performance of the two plates and reducing the risk of rainwater seeping into the vent through the gap between the plates. At the same time, the step-by-step adjustment makes the shielding area of ​​the vent gradually change, avoiding sudden increases and decreases in heat dissipation efficiency, ensuring stable compressor exhaust temperature, and further improving the reliability and stability of the air conditioner outdoor unit.

[0040] In some embodiments of this application, a control method for an air conditioner outdoor unit is provided. A rain sensor is installed at the vent of the outdoor unit to acquire rainfall data at the vent. The method controls a motor to rotate based on the rainfall data, thereby rotating a protective plate to dynamically adjust the opening angle of the protective plate. The method includes: Rainfall values ​​are obtained based on the rain sensor; If the obtained rainfall value is greater than the target rainfall value, the opening angle of the protective plate is gradually reduced until the obtained rainfall value is less than or equal to the target rainfall value.

[0041] The above-mentioned technical solution has the following advantages or beneficial effects: This control method relies on the rain sensor at the ventilation opening to obtain data, which can directly capture the real rainfall in the ventilation opening area, avoid the detection deviation caused by uneven rainfall distribution when the sensor is installed in other locations, provide accurate judgment basis for the adjustment of the protective plate, ensure that the protective action directly addresses the risk of rainwater intrusion at the ventilation opening, and improve the protection's effectiveness.

[0042] When rainfall exceeds the target value, the opening angle of the protective plate should be gradually reduced instead of being adjusted drastically all at once. This avoids sudden changes in heat dissipation efficiency caused by a sudden decrease in ventilation area, prevents the compressor from experiencing a sudden rise in exhaust temperature due to insufficient heat dissipation, avoids damage to core components caused by temperature fluctuations, and ensures the stability of the outdoor unit's operation. At the same time, gradual adjustment reduces the instantaneous load and impact on the transmission structure when the motor drives the protective plate, reduces component wear, and extends the service life of the device.

[0043] Furthermore, the adjustment stops when the rainfall value is less than or equal to the target rainfall value. This allows for the maximum preservation of ventilation area while meeting protection requirements, avoiding excessive obstruction that could affect heat dissipation, achieving a dynamic balance between protection and heat dissipation, and further improving the reliability and energy efficiency of the air conditioner's outdoor unit.

[0044] In some embodiments of this application, a control method for an air conditioner outdoor unit is provided. A rain sensor is installed at the vent of the outdoor unit to acquire rainfall data at the vent. The method controls a motor to rotate based on the rainfall data, thereby rotating a protective plate to dynamically adjust the opening angle of the protective plate. The method includes: If the rainfall value is less than the target rainfall value, the actual exhaust temperature of the air conditioning compressor is obtained, and the air conditioning compressor is located in the air conditioning outdoor unit cavity; If the actual exhaust temperature is greater than the exhaust temperature corresponding to the current opening angle of the protective plate, then the opening angle of the protective plate is increased until the rainfall value reaches the target rainfall value, or the actual exhaust temperature is less than or equal to the exhaust temperature corresponding to the current opening angle of the protective plate.

[0045] The above-mentioned technical solution has the following advantages or beneficial effects: This control method, through the coordinated regulation of rainfall and temperature, overcomes the limitations of solely relying on rainfall for adjustment, achieving a precise balance between protection and heat dissipation. When the rainfall value is less than the target rainfall value, the actual exhaust temperature of the compressor is first obtained—this temperature directly reflects whether the outdoor unit's heat dissipation is sufficient, avoiding blindly increasing the opening angle of the protective plate simply because the rainfall is low (for example, excessive ventilation is unnecessary in low-temperature weather and may even introduce more debris), ensuring that the adjustment action is more in line with the actual operating needs of the outdoor unit.

[0046] If the actual exhaust temperature exceeds the temperature threshold corresponding to the current angle, the opening angle of the protective plate can be increased further. This can not only improve ventilation efficiency to reduce the compressor temperature and prevent overheating and malfunctions, but also avoid over-adjustment through the dual stop conditions of rainfall reaching the target or temperature reaching the target: if the rainfall rises to the target rainfall value during the angle increase, it can be stopped in time to preserve the protective capability and prevent rainwater intrusion; if the temperature reaches the target first, there is no need to continue to open the angle larger, reducing the risk of debris entering.

[0047] This logic ensures the compressor's heat dissipation safety in low-rainfall scenarios while also addressing the protection needs arising from changes in rainfall, reducing unnecessary adjustments to the protective plate, lowering losses in the motor and transmission structure, and further improving the stability and energy efficiency of the outdoor unit's operation.

[0048] In some embodiments of this application, a control method for an air conditioner outdoor unit is provided. A rain sensor is installed at the vent of the outdoor unit to acquire rainfall data at the vent. The method controls a motor to rotate based on the rainfall data, thereby rotating a protective plate to dynamically adjust the opening angle of the protective plate. The method includes: If the rainfall value is equal to the target rainfall value, and the exhaust temperature corresponding to the current opening angle of the protective plate is less than the actual exhaust temperature of the air conditioning compressor, then the operating power of the compressor is gradually reduced until the actual exhaust temperature is less than or equal to the exhaust temperature corresponding to the current opening angle of the protective plate.

[0049] The above-mentioned technical solution has the following advantages or beneficial effects: This control method provides a precise and safe adjustment scheme for specific scenarios where rainfall protection meets the standard but compressor heat dissipation is insufficient, effectively balancing protection and operational performance. When the rainfall value equals the target rainfall value, the opening and closing angle of the protective plate is already adapted to the current rainfall intensity. If the angle is increased to improve heat dissipation, it will exceed the protection threshold and cause rainwater intrusion. At this time, by adjusting the compressor power instead of the protective plate, the heat dissipation problem can be solved without weakening the rain protection capability, avoiding the contradiction that adjusting the protective plate results in a loss of protection, while not adjusting it results in a loss of heat dissipation.

[0050] Meanwhile, by gradually reducing the compressor's operating power, significant fluctuations in cooling or heating performance caused by sudden power drops are avoided, ensuring a good user experience and reducing the impact and wear on internal compressor components caused by power surges, thus extending the compressor's lifespan. Furthermore, by using an actual exhaust temperature less than or equal to the exhaust temperature corresponding to the current angle as the stopping condition, the power adjustment range can be precisely controlled. This avoids performance deficiencies due to excessive power reduction while ensuring the compressor operates within a safe temperature range, further improving the stability, safety, and energy efficiency balance of the outdoor unit.

[0051] The effects of the above-mentioned technical solutions are not limited to those mentioned above. Those skilled in the art can clearly understand other effects not mentioned from the description in the claims. Attached Figure Description

[0052] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application. It is obvious that the drawings described below are merely some embodiments of this application, and those skilled in the art can obtain other drawings based on these drawings without any inventive effort. In the drawings: Figure 1 This is a schematic diagram of the structure of an air conditioner outdoor unit with an installed protective device, provided in one embodiment of this application.

[0053] Figure 2 yes Figure 1 A schematic diagram of the structure of an air conditioner outdoor unit without protective devices installed.

[0054] Figure 3 yes Figure 1 A schematic diagram of the structure of the protective device.

[0055] Figure 4 yes Figure 3 Exploded view of the central protective device.

[0056] Figure 5 yes Figure 4 A schematic diagram of the structure of the middle protective plate.

[0057] Figure 6 yes Figure 3 A schematic diagram of the structure of the base and motor.

[0058] Figure 7 yes Figure 6 A schematic diagram of the structure of the central base.

[0059] Figure 8 yes Figure 6 Another structural diagram of the central base.

[0060] Figure 9 yes Figure 1 A schematic diagram of the connection between the base and the top cover.

[0061] Figure 10 yes Figure 1 Cross-sectional view of the middle shell.

[0062] Figure 11 A flowchart of a control method for an outdoor unit of an air conditioner according to an embodiment of this application is shown.

[0063] Figure 12 A flowchart illustrating the dynamic control of the opening and closing angle of the protective plate according to an embodiment of this application is shown.

[0064] Figure 13 A flowchart is shown showing a process according to the first embodiment of this application, which controls the rotation of a motor based on rainfall data to drive the rotation of a protective plate, thereby dynamically adjusting the opening and closing angle of the protective plate.

[0065] Figure 14 A flowchart is shown showing a second embodiment of this application, which controls the rotation of the motor according to the rainfall value, thereby driving the protective plate to rotate and dynamically adjusting the opening and closing angle of the protective plate.

[0066] Explanation of reference numerals in the attached figures: 1: Housing; 11: Ventilation opening; 2: Protective devices; 21: Base; 211: First through hole; 212: Second through hole; 213: Third through hole; 214: Fourth through hole; 215: First connecting part; 216: Second connecting part; 217: Third connecting part; 218: Fourth connecting part; 219: Air outlet; 2101: Water collection chamber; 2102: Water collection trough; 22: Protective plate; 221: First protective plate; 2211: First rotating component; 2212: First rotating through hole; 222: Second protective plate; 2221: Second rotating component; 2222: Second rotating through hole; 223: Flow guide channel; 23: Electric motor; 231: First motor; 2311: First rotating shaft; 2312: Fifth connecting part; 232: First protective shell; 2321: Sixth connecting part; 233: Second motor; 2331: Second shaft; 2332: Seventh connecting part; 234: Second protective shell; 2341: Eighth connecting part; 3: Rain sensor; 4: Condensate pipes; 5: Top cover; 51: Drain hole. Detailed Implementation

[0067] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0068] The flowcharts shown in the accompanying drawings are merely illustrative and do not necessarily include all content and operations / steps, nor do they necessarily need to be executed in the described order. For example, some operations / steps can be broken down, while others can be combined or partially combined; therefore, the actual execution order may change depending on the actual situation. It should also be noted that "multiple" as mentioned in this application refers to two or more. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. The character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0069] The terms "first," "second," "third," and "fourth," etc., in the specification, claims, and drawings of this application are used to distinguish different objects, not to describe a particular order. The terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion.

[0070] When a structural element is mentioned as being "connected" or "in contact" with another structural element, it may mean that it is directly connected to or in contact with the other structural element, but it can also be understood as meaning that there are other structural elements between them. Conversely, when a structural element is mentioned as being "directly connected" or "directly in contact" with another structural element, it should be understood as meaning that there are no other structural elements between them.

[0071] Unless the context clearly indicates a different meaning, the singular form includes the plural form.

[0072] The top-discharge air conditioner outdoor unit is the core of the air conditioning system's heat dissipation. Installed high outdoors, it relies on the top vent 11 to achieve airflow exchange and dissipate heat for internal components to ensure stable operation of the entire unit. Although the existing vent 11 is equipped with a grille and a fixed air guide structure, gaps inevitably exist between the structures to meet ventilation requirements, which limits the protective design of the vent 11.

[0073] These limitations make it difficult for the ventilation opening 11 to provide reliable protection in outdoor environments. External environmental factors can easily affect the interior of the outdoor unit through this area, which not only affects the operational stability of core components but may also trigger a chain of problems, thereby adversely affecting the overall efficiency and service life of the equipment, becoming a significant weakness in the outdoor use of the outdoor unit.

[0074] The industry has tried to improve the ventilation by increasing the density of the grilles, adding fixed protective covers, or using simple rain control devices. However, these solutions either reduce the ventilation and heat dissipation effect due to structural adjustments, cannot adapt to changing weather, or create new operational hazards due to simple control logic. None of these solutions can provide ideal protection for the ventilation opening 11. There is an urgent need for technical solutions that can optimize the protection effect.

[0075] To solve the above-mentioned technical problems, this application proposes a protective device 2 for an air conditioner outdoor unit, an air conditioner outdoor unit, and a control method for the air conditioner outdoor unit, so as to solve the above-mentioned technical problems.

[0076] Figure 1 This is a schematic diagram of the structure of an air conditioner outdoor unit with an installed protective device 2 according to an embodiment of this application. In some embodiments, the air conditioner outdoor unit can be a top-discharge type air conditioner outdoor unit. The air conditioner outdoor unit may also not be a top-discharge type air conditioner outdoor unit.

[0077] The outdoor unit of the air conditioner may include a housing 1, which has a cavity inside. A vent 11 is formed on the housing 1 to allow gas exchange between the cavity and the outside environment and to dissipate heat from the compressor in the cavity. The vent 11 may be located on the top of the housing 1.

[0078] Please see Figure 1 In some embodiments, the housing 1 may include a top cover 5. The top cover 5 may be perforated to allow the vent 11 to exchange gases with the outside environment through the top cover 5.

[0079] In some embodiments, a protective device 2 may be provided on the outdoor unit of the air conditioner. The protective device 2 is fixedly disposed above the vent 11 of the housing 1 to protect the vent 11.

[0080] Figure 10 A cross-sectional view of a housing 1 according to an embodiment of this application is shown. Please refer to... Figure 10 A condensing pipe 4 can be provided between the inner and outer walls of the shell 1 to achieve a better condensation effect on the refrigerant.

[0081] Figure 3 yes Figure 1 A schematic diagram of the structure of the central protective device 2. Please refer to [link / reference]. Figure 3 The protective device 2 can protect the ventilation opening 11 of the outdoor unit of the air conditioner.

[0082] Please continue reading. Figure 1 and Figure 3 The protective device 2 may include a base 21. The base 21 may be disposed on the housing 1 to fix the protective device 2. In some embodiments, the base 21 may be sleeved on the housing 1. The base 21 may be snapped onto the housing 1. The protective device 2 may include a protective plate 22. The protective plate 22 may be disposed on the base 21. The protective plate 22 may be rotatably disposed on the base 21. The protective plate 22 may change the degree of obstruction of the vent 11 by rotation. The protective device 2 may include a motor 23. The motor 23 may be fixedly disposed on the base 21. The rotation of the motor 23 may drive the protective plate 22 to rotate, thereby changing the degree of obstruction of the vent 11 by the protective plate 22. The air conditioner outdoor unit or the protective device 2 may include a control unit for controlling the rotation of the motor 23 to drive the protective plate 22 to rotate.

[0083] In some embodiments, the protective plate 22 can completely block the vent 11 when it is at a set opening angle (e.g., 0 degrees). The opening angle refers to the angle between the plane of the protective plate 22 and the plane of the vent 11.

[0084] In this embodiment, the protective device 2 is securely fixed to the housing 1 via the base 21, ensuring that the device is not easily loosened in outdoor environments. This provides a reliable installation foundation for the protection of the ventilation opening 11 and prevents protection failure due to displacement of the protective device 2. The rotatable design of the protective plate 22 overcomes the limitations of fixed protective structures. It can flexibly adapt to different scenarios by adjusting the degree of obstruction—it can enhance the obstruction of the ventilation opening 11 when protection is needed, and reduce the obstruction when heat dissipation is needed, balancing protection and heat dissipation requirements and avoiding the problems of insufficient protection or obstruction of heat dissipation caused by fixed structures. The motor 23 provides precise power for the rotation of the protective plate 22. With the control unit's regulation, the protective plate 22 can be automatically and controllably adjusted without manual operation. It can quickly respond to changes in the outdoor environment, effectively reducing the impact of external factors on the ventilation opening 11 and the internal components of the outdoor unit, thereby improving the operational stability of the air conditioner outdoor unit and extending the service life of the equipment.

[0085] In some embodiments, a flow guide groove 223 is provided on the back of the protective plate 22 (the side opposite to the vent 11). The extension direction of the flow guide groove 223 may be perpendicular to the rotation axis of the protective plate 22. This is to prevent the protective plate 22 from being too heavy due to excessive liquid adhesion, which would affect the rotation of the protective plate 22.

[0086] Please continue reading. Figure 3 One end of the base 21 can be fitted onto the top of the housing 1 to fix the protective device 2 onto the housing 1. The other end of the base 21 can form an air vent 219. The air vent 219 can be located above the vent 11. The air vent 219 communicates with the vent 11 so that the vent 11 can communicate with the outside world through the air vent 219 for gas exchange.

[0087] In this embodiment, the protective device 2 has a base 21 fixed to the housing 1 at one end, allowing for stable installation in outdoor wind, rain, and vibration environments. This prevents the device from loosening and shifting, thus avoiding protection failure and providing reliable structural support for the ventilation opening 11. The air vent 219 at the other end of the base 21 corresponds vertically to and connects with the outdoor unit's ventilation opening 11, precisely aligning with the existing ventilation path. This ensures smooth airflow through the air vent 219 into the ventilation opening 11, preventing the protective device 2 from further obstructing the cooling airflow and ensuring the outdoor unit's basic cooling efficiency remains unaffected. Simultaneously, the protective plate 22 is directly positioned at the air vent 219, allowing for direct adjustment of the airflow channel. When protection is needed, the protective plate 22 can specifically block the air vent 219, preventing rainwater and debris from entering; when cooling is required, the protective plate 22 reduces obstruction, ensuring efficient airflow. This design enhances the targeted protection of the ventilation opening 11 while also considering cooling needs, effectively avoiding the problems of traditional protective structures that easily obstruct ventilation or provide insufficient protection.

[0088] Figure 4 yes Figure 3 Please refer to the exploded view of the middle protective device 2. Figure 3 The protective plate 22 may include a first protective plate 221 and a second protective plate 222. The first protective plate 221 can rotate about a first rotation axis. The second protective plate 222 can rotate about a second rotation axis. The first rotation axis and the second rotation axis are arranged parallel to each other on the base 21 and are distributed on both sides of the air outlet 219.

[0089] In this embodiment, the protective device 2 divides the protective plate 22 into a first protective plate 221 and a second protective plate 222, which rotate around rotation axes parallel to opposite sides of the air vent 219, bringing multiple advantages: First, the independent rotation design of the two plates breaks through the limitations of single-plate adjustment, and the rotation angle of one or two protective plates can be flexibly controlled according to actual needs, realizing fine adjustment of the degree of shading of the air vent 219—for example, in light rain, only one protective plate 22 needs to be slightly adjusted, which can block rainwater while maximizing the preservation of ventilation space, avoiding the impact of adjusting a single plate. Firstly, the design addresses the issue of ventilation. Secondly, the parallel and separate rotating axes on both sides ensure that the two panels do not interfere with each other and operate stably. At the same time, when the two panels are closed, they move from both sides of the air vent 219 towards the middle, providing more comprehensive coverage of the air vent 219 and reducing the gaps where rainwater and debris seep in from the edges of the air vent 219. Thirdly, the coordinated adjustment of the two panels can adapt to more scenarios. For example, when there is strong wind and slanting rain on one side, the shielding angle of the corresponding protective panel 22 can be adjusted to be larger, while the other side maintains ventilation, taking into account both protection and heat dissipation efficiency, effectively avoiding the shortcomings of traditional single-panel adjustment in terms of flexibility.

[0090] Figure 5 yes Figure 4 A schematic diagram of the structure of the middle protective plate 22. Figure 6 yes Figure 3 A schematic diagram of the structure of the base 21 and the motor 23. Figure 7 yes Figure 6 A schematic diagram of the structure of the central base 21. Figure 8 yes Figure 6 Another structural diagram of the central base 21.

[0091] Please see Figures 3 to 6 The motor 23 may include a first motor 231 and a second motor 233. The first shaft 2311 of the first motor 231 can drive the first protective plate 221 to rotate. The second shaft 2331 of the second motor 233 can drive the second protective plate 222 to rotate.

[0092] The first motor 231 can be mounted on the base 21.

[0093] In some embodiments, the first motor 231 may be provided with a fifth connecting portion 2312, and the base 21 may be provided with a first connecting portion 215. The first connecting portion 215 may be connected to the fifth connecting portion 2312 to fix the first motor 231. The first connecting portion 215 and the fifth connecting portion 2312 may be connected by screws to fix the first motor 231.

[0094] In some embodiments, there may be two first connecting portions 215, which are distributed on both sides of the first motor 231 when the first motor 231 is installed. There may also be two fifth connecting portions 2312, which are distributed on both sides of the first motor 231. The two first connecting portions 215 and the two fifth connecting portions 2312 can be connected to each other to further fix the first motor 231.

[0095] In some embodiments, the motor 23 further includes a first protective shell 232 for protecting the first motor 231. A second connecting portion 216 is provided on the base 21, and a sixth connecting portion 2321 is provided on the first protective shell 232. The second connecting portion 216 can be connected to the sixth connecting portion 2321 to fix the first protective shell 232. The second connecting portion 216 can be connected to the sixth connecting portion 2321 by screws.

[0096] In some embodiments, there may be two second connecting portions 216, which are distributed on both sides of the motor 23 when the first motor 231 is installed. There may also be two sixth connecting portions 2321, which are distributed on both sides of the motor 23. The two second connecting portions 216 and the two sixth connecting portions 2321 can be connected to each other to further secure the first protective shell 232.

[0097] In some embodiments, the base 21 may be provided with a third connecting portion 217, and the second motor 233 may be provided with a seventh connecting portion 2332. The third connecting portion 217 and the seventh connecting portion 2332 may be connected to fix the second motor 233. The third connecting portion 217 and the seventh connecting portion 2332 may be connected by screws to fix the second motor 233.

[0098] In some embodiments, there may be two third connecting portions 217, which are distributed on both sides of the second motor 233 when the second motor 233 is installed. There may also be two seventh connecting portions 2332, which are distributed on both sides of the second motor 233. The two third connecting portions 217 and the two seventh connecting portions 2332 can be connected to each other to further secure the second motor 233.

[0099] In some embodiments, the motor 23 further includes a second protective housing 234 for protecting the second motor 233. A fourth connecting portion 218 is provided on the base 21, and an eighth connecting portion 2341 is provided on the second protective housing 234. The fourth connecting portion 218 can be connected to the eighth connecting portion 2341 to fix the second protective housing 234. The fourth connecting portion 218 can be connected to the eighth connecting portion 2341 by screws.

[0100] In some embodiments, there may be two fourth connecting portions 218, which are distributed on both sides of the second motor 233 when the second motor 233 is installed. There may also be two eighth connecting portions 2341, which are distributed on both sides of the second motor 233. The two fourth connecting portions 218 and the two eighth connecting portions 2341 can be connected to each other to further secure the first protective shell 232.

[0101] In the above embodiments, both the motor 23 and the matching protective shell adopt a double-sided symmetrical connection part and are fixed with screws. The force on both sides is balanced, which can avoid installation offset or loosening caused by unilateral fixing. Even under outdoor vibration and strong wind conditions, the transmission accuracy between the motor 23 and the protective plate 22 can still be guaranteed, and the angle offset of the protective plate 22 can be prevented from causing rain leakage or ventilation obstruction. At the same time, the protective shell can isolate outdoor dust, rainwater and debris corrosion, reduce the risk of corrosion and short circuit of internal parts of the motor 23, and extend the service life of the motor 23. Moreover, the screw connection method is convenient for disassembly and assembly, and the double-sided positioning structure makes the motor 23 and the protective shell accurately positioned during installation, improving assembly efficiency. During later maintenance, it can be disassembled separately without disassembling the internal structure of the base 21, simplifying the maintenance process, reducing maintenance costs, avoiding secondary damage to the overall structure of the device during maintenance operations, and further ensuring the long-term stable operation of the protective device 2.

[0102] Please continue reading. Figures 3 to 8 The base 21 may have a first through hole 211 and a second through hole 212 on its two opposite side walls. The first protective plate 221 may have a first rotating member 2211 and a first rotating through hole 2212 on its opposite sides. The first rotating shaft includes the first rotating member 2211 and a first rotating shaft 2311 of the first motor 231. The first rotating shaft 2311 is inserted into the first rotating through hole 2212 through the first through hole 211 on the outside of the base 21, and the first rotating member 2211 is inserted into the second through hole 212 from the inside of the base 21.

[0103] The base 21 is provided with a third through hole 213 and a fourth through hole 214 on two opposite side walls. The second protective plate 222 is provided with a second rotating through hole 2222 and a second rotating component 2221 on opposite sides. The second rotating shaft includes the second rotating component 2221 and the second rotating shaft 2331 of the second motor 233. The second rotating shaft 2331 is inserted into the second rotating through hole 2222 through the third through hole 213 on the outside of the base 21, and the second rotating component 2221 is inserted into the fourth through hole 214 from the inside of the base 21.

[0104] In this embodiment, the protective device 2 uses a dedicated drive structure with dual motors 23 to enable the first motor 231 and the second motor 233 to independently drive the first protective plate 221 and the second protective plate 222, respectively. This allows for completely independent adjustment of the angles of the two protective plates 22, overcoming the limitation of traditional linkage adjustment structures where adjustments result in synchronized action. When facing uneven environments such as unilateral slanting rain or localized strong winds, the shielding angle of a single protective plate 22 can be adjusted to enhance local protection, while the other protective plate 22 maintains a suitable angle to ensure ventilation. This effectively balances the protection and heat dissipation needs under complex working conditions, avoiding insufficient protection or obstructed heat dissipation caused by overall adjustment. Meanwhile, the four through holes on the side wall of the base 21, the rotating parts of the protective plate 22, and the shaft of the motor 23 form a two-way mating structure. The shaft of the motor 23 passes through the rotating through hole of the protective plate 22 from the outside of the base 21, and the rotating parts of the protective plate 22 are inserted into the corresponding through hole from the inside of the base 21. This two-way positioning design can effectively limit the radial displacement of the protective plate 22 during rotation. Even under harsh conditions such as outdoor vibration and strong winds, the angle adjustment accuracy of the protective plate 22 can still be maintained, preventing protective gaps or obstruction of ventilation channels due to structural loosening, and ensuring the stability of the device operation. In addition, the first motor 231 and the second motor 233 are both located on the outside of the base 21. When the motor 23 is inspected or replaced later, it can be operated without disassembling the internal structure of the base 21. This simplifies the maintenance process and avoids secondary damage to the internal protective structure of the base 21 during maintenance operations, further extending the overall service life of the device and ensuring long-term reliable operation.

[0105] Please see Figures 3 to 7 In some embodiments, the first protective plate 221 and the second protective plate 222 are of the same size. The first protective plate 221 may have a different size than the second protective plate 222. The area of ​​the first protective plate 221 is larger than the area of ​​the second protective plate 222. The first protective plate 221 and the second protective plate 222 are initially placed horizontally, with an overlapping area, and the first protective plate 221 is positioned above the second protective plate 222. When the opening angle of the first protective plate 221 and the second protective plate 222 increases, the first protective plate 221 is rotated first, followed by the second protective plate 222. When the opening angle of the first protective plate 221 and the second protective plate 222 decreases, the second protective plate 222 is rotated first, followed by the first protective plate 221. This is to prevent the first protective plate 221 and the second protective plate 222 from colliding during rotation. It should be noted that the opening angle of the protective plate 22 refers to the angle between the plane of the protective plate 22 and the plane where the vent 11 is located.

[0106] In some embodiments, the area ratio of the first protective plate 221 to the second protective plate 222 is 3:2. The sum of the areas of the first protective plate 221 and the second protective plate 222 is greater than that of the air vent 219 or the ventilation opening 11.

[0107] In some embodiments, the first protective plate 221 and the second protective plate 222 can completely block the vent 11 in their initial state (closed state). After the first protective plate 221 and the second protective plate 222 are rotated, they form an inverted "V" shape. While providing sufficient protection for the vent 11, this also improves the ventilation and heat dissipation effects of the vent 11.

[0108] In the above embodiments, this technical solution achieves multiple improvements in protection, heat dissipation, and operational stability through the synergistic optimization of the structural design and adjustment logic of the protective plate 22: the protective plate 22 can flexibly adapt to the same or different area ratios, and its area is greater than and can completely block the ventilation opening 11. In the initial closed state, it can block rainwater and debris from entering from all directions, adapting to different ventilation opening 11 sizes and protection requirements, with high flexibility; in the initial state, the first protective plate 221 is horizontally overlapped on top of the second protective plate 222. With the adjustment sequence of turning the first protective plate 221 first when opening to a larger angle and turning the second protective plate 222 first when closing to a smaller angle, collisions between the two plates are avoided from both structural and logical perspectives, ensuring a smooth adjustment process and reducing the risk of component damage; the inverted "V" shaped structure formed after rotation will not block the ventilation path and can also guide airflow quickly through the ventilation opening 11, significantly improving ventilation and heat dissipation efficiency. At the same time, rainwater will flow along the inverted "V". The rainwater flows down from both sides of the protective plate to prevent it from dripping into the vent 11, further enhancing the rainproof effect. The opening and closing angle is clearly defined as the angle between the protective plate 22 and the plane of the vent 11, making the adjustment precision controllable. It can accurately balance the protection strength and heat dissipation requirements under different working conditions. The overall design takes into account practicality, stability and adaptability, effectively ensuring the long-term reliable operation of the air conditioner outdoor unit.

[0109] Figure 9 yes Figure 1 A schematic diagram showing the connection between the base 21 and the top cover 5. Please refer to [link / reference]. Figure 4 , Figure 6 , Figure 7 and Figure 9 In some embodiments, the base 21 has a water collection cavity 2101 for collecting and draining liquid flowing from the protective plate 22. In some embodiments, the water collection cavity 2101 is provided with a drain hole 51 to drain the liquid from the water collection cavity 2101.

[0110] In some embodiments, the lowest side of the protective plate 22 is located in the water collection cavity 2101 during rotation, so that the liquid on the protective plate 22 flows into the water collection cavity 2101.

[0111] In some embodiments, a guide groove 223 is provided on the back side (away from the vent 11) of the first protective plate 221 and the second protective plate 222. The extending direction of the guide groove 223 may be perpendicular to the rotation axis of the protective plate 22. This facilitates the faster flow of liquid on the protective plate 22 into the water collection chamber 2101, preventing the protective plate 22 from becoming too heavy due to excessive liquid buildup, which could affect its rotation.

[0112] In some embodiments, the lowest side of the first protective plate 221 and the second protective plate 222 during rotation is located in the water collection cavity 2101. In some embodiments, the projections of the first and second rotation axes on the bottom of the water collection cavity 2101 are located on both sides of the vent 11 to prevent liquid on the first and second protective plates 221 and 222 from flowing into the vent 11.

[0113] In the above technical solution, the water collection cavity 2101 formed by the base 21 can specifically collect liquid flowing from the protective plate 22, preventing liquid from flowing randomly on the surface of the base 21 and seeping into the outdoor unit through the installation gap between the base 21 and the housing 1. This reduces the probability of liquid contacting core components such as the compressor and controller, lowers the risk of corrosion and short circuits caused by moisture, and ensures the operational safety of the core components of the outdoor unit. Simultaneously, the water collection cavity 2101 also has a drainage function, promptly draining the collected liquid to prevent it from accumulating and overflowing. This prevents problems such as corrosion of the base 21 and water accumulation inside the outdoor unit due to overflowing liquid, ensuring the continuous functioning of the water collection cavity 2101. Furthermore, this design utilizes the base 21's own structure to form the water collection cavity 2101, eliminating the need for additional complex drainage components. While strengthening liquid protection, it does not occupy additional space in the outdoor unit or compromise the overall structural stability of the protective device 2, further ensuring the long-term reliable operation of the air conditioning outdoor unit.

[0114] Please continue reading. Figure 2 and Figure 9 The outdoor unit of the air conditioner can be a top-outlet type, that is, the vent 11 is located at the top of the outdoor unit and faces upward, so that the cavity can exchange gases with the outside through the vent 11 and the air outlet 219.

[0115] In some embodiments, the housing 1 may include a top cover 5. The top cover 5 may be perforated to allow the vent 11 to exchange gases with the outside environment through the top cover 5.

[0116] In some embodiments, the top cover 5 is provided with a drain hole 51. The water collection cavity 2101 may be arranged to be deeper toward the top cover 5. The bottom of the water collection cavity 2101 abuts against the top cover 5 at the drain hole 51, and the liquid in the water collection cavity 2101 is discharged through the drain hole 51.

[0117] In some embodiments, the top cover 5 is arranged to narrow upwards axially, and the water collection cavity 2101 can be arranged to deepen towards the top cover 5 and to be arranged vertically downwards near the top cover 5, forming a water collection trough 2102 with the top cover 5. The bottom of the water collection trough 2102 is lower than the highest point of the drain hole 51, so that the liquid on the protective plate 22 passes through the protective plate 22, the water collection cavity 2101, the water collection trough 2102, and the drain hole 51 in sequence, and the collected liquid is discharged.

[0118] In some embodiments, the lowest side of the first protective plate 221 and the second protective plate 222 during rotation is located in the water collection cavity 2101. In some embodiments, the projections of the first and second rotation axes on the bottom of the water collection cavity 2101 are located on both sides of the top cover 5. This ensures that liquid on the first protective plate 221 and the second protective plate 222 can flow into the water collection cavity 2101, and avoids flow path vents.

[0119] In this embodiment, the vent 11 is located on the top of the housing 1, and is paired with a perforated top cover 5. This design ensures that the vent 11 interacts with the outside air, meeting the basic heat dissipation requirements of the outdoor unit, while the top cover 5 provides initial protection for the vent 11, reducing the direct entry of large debris into the vent 11. The design of the drain hole 51 on the top cover 5 abutting against the bottom of the water collection chamber 2101 allows the liquid (such as rainwater) collected in the water collection chamber 2101 to be accurately discharged through the drain hole 51, preventing the liquid in the water collection chamber 2101 from accumulating and overflowing and seeping into the interior of the outdoor unit, further reducing the risk of moisture corrosion to core components such as the compressor and controller. Meanwhile, the design relies on the drainage hole 51 of the original top cover 5 of the housing 1 to achieve liquid drainage, without the need to open new holes on the housing 1, reducing the modification of the body structure, reducing processing costs and the risk of body damage; and the abutting fit between the water collection cavity 2101 and the drainage hole 51 can ensure the sealing of the drainage path, prevent liquid leakage at the connection, ensure efficient and reliable drainage, and provide a guarantee for the long-term protection and stable operation of the air vent 11 on the top of the air conditioner outdoor unit.

[0120] Figure 10 yes Figure 1 Cross-sectional view of the middle shell 1. (See also...) Figure 2 , Figure 9 and Figure 10 The casing 1 of the outdoor unit of the air conditioner may be equipped with a condensing pipe 4. The liquid discharged from the water collection chamber 2101 is poured onto the outside of the casing 1 where the condensing pipe 4 is located through the drain hole 51, so as to better cool the condensing pipe.

[0121] The liquid discharged from the water collection chamber 2101 is poured onto the outside of the housing 1 where the condenser pipe 4 is located. Through the physical action of liquid evaporation absorbing heat, the temperature of the outside of the housing 1 is reduced. This temperature change is further conducted to the condenser pipe 4 inside the housing 1, assisting in heat dissipation. Especially in high-temperature environments or when the protective plate 22 reduces its opening angle for enhanced protection, leading to a decrease in ventilation and heat dissipation efficiency, this effectively compensates for heat loss and prevents insufficient heat dissipation in the condenser pipe 4 from reducing refrigerant heat exchange efficiency. This prevents the compressor exhaust temperature from exceeding the limit, ensuring stable cooling or heating performance of the outdoor unit. Simultaneously, this design fully utilizes the liquid (such as rainwater) collected in the water collection chamber 2101, eliminating the need for an external water source or additional auxiliary heat dissipation components. This not only turns waste into treasure but also avoids additional energy consumption and structural complexity, reducing equipment costs. Furthermore, the liquid only acts on the outside of the housing 1, without directly contacting the core electrical components inside. This improves heat dissipation while avoiding the risks of short circuits and corrosion caused by liquid intrusion, balancing heat dissipation optimization and operational safety, further ensuring the long-term reliable operation of the outdoor unit.

[0122] Please continue reading. Figure 2 and Figure 9 The protective device 2 also includes a rain sensor 3. The rain sensor 3 can be located in an unobstructed area next to the installation location of the air conditioner outdoor unit. The rain sensor 3 can be installed on the air conditioner outdoor unit. The rain sensor 3 can be installed on the protective device 2.

[0123] In some embodiments, the rain sensor 3 is located at the vent 11, and is obscured when the protective plate 22 is in its initial state. When the protective plate 22 is open, the rain sensor 3 is used to sense the amount of rain at the vent 11.

[0124] The rain sensor 3 is located at the vent 11 and can directly detect the rainfall in the area of ​​the vent 11. This avoids the detection deviation caused by uneven rainfall distribution due to the installation position of the rain sensor 3 being off-center from key areas (such as other sides of the outdoor unit). It ensures that the dynamics of rainwater approaching the vent 11 can be captured in a timely and accurate manner, providing direct and effective rainfall data support for the adjustment of the protective plate 22. This ensures that the protective action responds in a timely manner to the risk of intrusion into the vent 11 and reduces the probability of rainwater seepage.

[0125] In its initial state (typically fully closed standby), the protective plate 22 shields the rain sensor 3, isolating it from outdoor dust, fallen leaves, and direct sunlight when the protective device 2 is not activated. This prevents debris from affecting detection accuracy and protects the rain sensor 3 from long-term exposure to harsh environments, effectively extending its lifespan. Furthermore, this design eliminates the need for additional sensor protection structures, dynamically switching between protection during non-operation and exposure during operation via the protective plate 22 itself. This simplifies the overall structure of the protective device 2, reduces costs, and ensures stable data collection by the rain sensor 3 after the equipment is operational, further enhancing the operational reliability of the protective device 2.

[0126] This application also provides an air conditioner outdoor unit, which may include a housing 1. A receiving cavity is formed within the housing 1, and a vent 11 is formed within the housing 1 for allowing gas exchange between the receiving cavity and the outside environment. The air conditioner outdoor unit also includes a protective device 2 as described in any of the above embodiments, the protective device 2 being disposed on the housing 1.

[0127] By adapting any of the aforementioned protective devices 2 to the ventilation opening 11 of the housing 1, the outdoor unit of this air conditioner can address the outdoor protection problem of the ventilation opening 11 while preserving the function of the housing 1's cavity interacting with the outside gas. The protective device 2 can rely on its own structure (such as the rotatable protective plate 22, the water collection cavity 2101, etc.) to block rainwater and debris from entering the ventilation opening 11, preventing the core components such as the compressor and controller inside the cavity from getting damp, corroded, or blocked. At the same time, with the adjustment capability of the protective device 2 (such as the motor 23 driving the protective plate 22 to change its angle), it can flexibly adapt to different scenarios, neither hindering ventilation and heat dissipation nor hindering the protection effect, thus balancing the core contradiction between the outdoor unit's need for ventilation and protection.

[0128] Furthermore, various optimized designs of the protective device 2 (such as independent drive of dual motors 23, protection of rain sensor 3, and utilization of drained water from the water collection chamber 2101) can directly serve the housing 1: for example, the liquid drained from the water collection chamber 2101 can assist in heat dissipation of the condenser pipe 4, reducing the energy consumption of the outdoor unit; the protective plate 22 initially shields the rain sensor 3, reducing the probability of the sensor being affected by environmental interference. Moreover, the adaptation of the protective device 2 to the housing 1 does not require significant changes to the body structure, which can achieve protection upgrades while reducing modification and maintenance costs, further ensuring the long-term stable operation of the air conditioner outdoor unit.

[0129] This application also provides a control method for an air conditioner outdoor unit, which includes the protective device for the air conditioner outdoor unit described in any of the above embodiments. See also... Figure 11 , Figure 11 A flowchart illustrating a control method for an air conditioner outdoor unit according to an embodiment of this application is shown. This application provides the steps of a control method for an air conditioner outdoor unit, including: Step S110: Based on the air conditioner start command, control the motor to rotate so as to drive the protective plate to rotate to the set opening and closing angle; Step S120: Control the compressor in the outdoor unit of the air conditioner to start, and obtain the rainfall value in the environment where the outdoor unit of the air conditioner is located; Step S130: Control the motor to rotate, driving the protective plate to rotate to the target opening angle corresponding to the rainfall value.

[0130] The above three steps are described in detail below.

[0131] In step S110, the air conditioner start command refers to the signal that triggers the start of the outdoor unit of the air conditioner. It can come from the operation of the air conditioner remote control, the triggering of the button on the unit, the remote control of the smart device, etc., and is the start trigger condition for the entire control process. The set opening and closing angle refers to the initial opening and closing angle of the protective plate 22 (not a fixed value, which can be preset according to the outdoor unit model and heat dissipation standard) that is stored in the air conditioner control module. It is used to build the basic ventilation channel before the compressor starts.

[0132] In some embodiments, the opening range of the protective plate 22 is from 0 degrees (parallel to the plane where the vent 11 is located, completely blocking the vent 11) to 90 degrees (perpendicular to the plane where the vent 11 is located, without blocking the vent 11). The opening angle can be set to 45 degrees or directly to 90 degrees.

[0133] In some embodiments, the control unit of the outdoor unit of the air conditioner (such as the main control chip or PLC module) sends a drive signal to instruct the motor 23 to rotate. The motor 23 transmits power to the protective plate 22 through a transmission structure (such as a shaft or gear), causing the protective plate 22 to rotate with the motor 23 and change its opening and closing angle. This step establishes basic ventilation conditions for compressor startup. The logic is as follows: the air conditioner start command is used as a trigger signal, and the control unit sends a drive command to the motor 23 of the protective device 2. The motor 23 transmits power to the protective plate 22, causing the protective plate 22 to rotate from its initial state (such as fully closed or half open) to a preset fixed angle (set opening and closing angle). This ensures that before the compressor starts, the vent 11 has formed an airflow channel that meets the basic heat dissipation requirements, avoiding overheating due to insufficient ventilation in the early stages of compressor startup.

[0134] In step S120, the rainfall value refers to the real-time rainfall intensity data of the environment where the air conditioner outdoor unit is located (such as the quantified values ​​corresponding to no rain, light rain, moderate rain, and heavy rain), which is collected by the rainfall sensor 3 or obtained by the external environment monitoring module. Alternatively, the rainfall value can be obtained directly through interaction with the terminal device.

[0135] Start the compressor of the outdoor unit of the air conditioner and obtain the rainfall value. At this time, the protective plate 22 has reached the set opening angle. First, start the compressor to put the outdoor unit into the cooling or heating working state. At the same time, collect the real-time rainfall data of the environment where the outdoor unit is located to provide data support for the subsequent precise adjustment of the protective plate 22 and avoid blind adjustment.

[0136] In step S130, the target opening angle is the optimal opening angle of the protective plate 22 matched based on the real-time rainfall value (rainfall and angle are negatively correlated; for example, the greater the rainfall, the smaller the angle). To achieve precise matching between the protective plate 22 and the rainfall conditions, the preset mapping relationship between rainfall value and target opening angle is queried based on the rainfall value. The motor 23 drives the protective plate 22 to rotate from the set opening angle to the target opening angle adapted to the current rainfall, ultimately preventing rainwater from entering the vent 11.

[0137] This control method provides precise protection and heat dissipation balance for the operation of the outdoor unit of the air conditioner by starting a pre-set and dynamically adapted orderly process: based on the start command, the protective plate 22 is first controlled to turn to the set opening angle, which can build a basic ventilation channel before the compressor starts, avoid heat dissipation obstruction due to improper state such as the protective plate 22 being fully closed in the early stage of compressor start-up, prevent the exhaust temperature from rising sharply, ensure the operation safety of the compressor during the start-up stage, and avoid the risk of failure caused by insufficient heat dissipation during start-up.

[0138] After the compressor starts, the protective plate 22 is adjusted to the target angle based on the real-time rainfall value, instead of operating at a fixed angle. This allows for dynamic adaptation of the protection level according to the actual rainfall intensity. When the rainfall is light, a larger opening angle is maintained to ensure heat dissipation efficiency, while the angle is reduced to enhance the rainproof effect when the rainfall is heavy. This effectively avoids the problem of insufficient heat dissipation caused by traditional one-size-fits-all control (such as fully closing the protective plate 22 in light rain) or rainwater intrusion caused by ignoring changes in rainfall and maintaining a fixed angle.

[0139] The entire process is tightly integrated and logically clear, ensuring equipment stability during startup while responding to changes in the outdoor environment in real time, accurately balancing heat dissipation and protection needs, and further improving the reliability and energy efficiency of the air conditioner outdoor unit.

[0140] Please see Figure 12 , Figure 12 A flowchart illustrating the dynamic control of the opening and closing angle of a protective panel according to an embodiment of this application is shown. This application embodiment provides steps for dynamically controlling the opening and closing angle of a protective panel, including: Step S140: Repeat the acquisition of rainfall values; In step S150, the motor is controlled to rotate according to the rainfall value, which drives the protective plate to rotate, so as to dynamically adjust the opening and closing angle of the protective plate. The rainfall value and the opening and closing angle of the protective plate are negatively correlated.

[0141] The two steps described above are described in detail below.

[0142] This application embodiment describes a closed-loop control process for dynamic rainfall adaptation. After the protective plate 22 has been adjusted to the target opening angle corresponding to the initial rainfall value, environmental rainfall data is continuously and periodically collected (i.e., rainfall values ​​are repeatedly acquired). Based on this real-time updated rainfall data, the motor 23 of the protective plate 22 is driven to perform rotation, thereby driving the protective plate 22 to achieve real-time adjustment of the opening angle (i.e., dynamic adjustment). It is clear that the rainfall value and the opening angle of the protective plate 22 are negatively correlated—that is, the greater the rainfall intensity, the smaller the opening angle of the protective plate 22 (the stronger the protection), and the smaller the rainfall intensity, the larger the opening angle of the protective plate 22 (the more sufficient the heat dissipation). Ultimately, the angle of the protective plate 22 is adapted to the changes in rainfall in real time, avoiding the problem of insufficient protection or heat dissipation obstruction caused by changes in rainfall intensity after a single adjustment.

[0143] In step S140, the data acquisition basis for dynamic adjustment is the repeated acquisition of rainfall values. Repeated acquisition of residual values ​​means that the rain sensor 3 (located at the vent 11, used to collect rainfall intensity at the vent) continuously and cyclically collects rainfall values ​​(quantitative data representing rainfall intensity, such as 0 mm / h for no rain, 10-20 mm / h for light rain, 20-50 mm / h for moderate rain, etc., which is the core judgment basis for subsequent angle adjustment) at a preset period (such as every 5 seconds / 10 seconds, which can be adapted according to the model) rather than terminating after a single acquisition.

[0144] By capturing real-time changes in rainfall intensity in the outdoor unit's environment (such as from no rain to light rain, light rain to moderate rain, or moderate rain to light rain), the system avoids situations where sudden changes in rainfall (such as sudden heavy rain) cause the previous target opening angle to become unsuitable. This provides continuous and accurate data support for subsequent dynamic adjustments, ensuring the timeliness and relevance of the adjustments.

[0145] In step S150, the latest rainfall data obtained repeatedly is used as the basis for judgment, rather than relying on previous historical rainfall values, to ensure the real-time nature of the adjustment basis. According to the real-time rainfall value, a precise drive signal (such as forward / reverse rotation, rotation angle command) is sent to the motor 23 of the protective device 2 (the power component that drives the protective plate 22 to rotate, which can be a single motor 23 or a dual motor 23). The motor 23 executes the corresponding rotation action. The motor 23 transmits power to the protective plate 22 through a transmission structure (such as a shaft, gear, connecting the output end of the motor 23 and the protective plate 22), so that the protective plate 22 changes angle as the motor 23 rotates. This ensures that the opening and closing angle of the protective plate 22 (the angle between the protective plate 22 and the plane of the vent 11, which represents the degree of opening of the vent 11; the larger the angle, the more sufficient the ventilation and the weaker the protection, and vice versa) is not fixed, but is updated in real time with the change of rainfall value, avoiding the angle from remaining unchanged after adjustment. When the rainfall increases, the opening angle of the protective plate 22 decreases accordingly, strengthening the protection of the ventilation opening 11; when the rainfall decreases, the opening angle increases accordingly, improving ventilation and heat dissipation efficiency.

[0146] In this embodiment, the control method dynamically adjusts the opening angle of the protective plate 22 by repeatedly acquiring rainfall values ​​and using a negative correlation. This allows for real-time response to changes in outdoor rainfall intensity, effectively avoiding the limitations of traditional single-adjustment or fixed-angle control. When rainfall intensity increases, the opening angle of the protective plate 22 decreases synchronously with the increase in rainfall, effectively strengthening the shielding of the ventilation opening 11 and preventing rainwater from seeping into the air conditioner's outdoor unit due to insufficient protection, thus avoiding moisture and corrosion of core components. When rainfall intensity decreases, the opening angle of the protective plate 22 increases synchronously with the decrease in rainfall, quickly restoring the ventilation area, ensuring the condenser's heat dissipation efficiency, and preventing the compressor's exhaust temperature from exceeding the standard due to an excessively small angle. This dynamic adaptation mechanism requires no manual intervention, accurately balancing protection and heat dissipation needs when rainfall changes, avoiding equipment operation risks caused by adjustment lag during rainfall fluctuations, and reducing unnecessary frequent and large-scale adjustments of the protective plate 22. This reduces wear and tear on the transmission structure of the motor 23 and the protective plate 22, further improving the stability and service life of the air conditioner's outdoor unit.

[0147] In some embodiments, the protective plate 22 includes a first protective plate 221 and a second protective plate 222, and the first protective plate 221 is located above the second protective plate 222 when it overlaps with the second protective plate 222; controlling the motor 23 to rotate and drive the protective plate 22 to rotate includes: when increasing the opening angle of the protective plate 22, first controlling the first protective plate 221 to rotate, and then controlling the second protective plate 222 to rotate; when decreasing the opening angle of the protective plate 22, first controlling the second protective plate 222 to rotate, and then controlling the first protective plate 221 to rotate.

[0148] In this embodiment, the control method sets the adjustment sequence based on the overlapping position of the two protective plates 22, which can effectively avoid adjustment risks and enhance the protective effect. When increasing the opening angle, the upper first protective plate 221 is driven to rotate first, and then the lower second protective plate 222 is adjusted. Since the first protective plate 221 is initially located on top, opening it first will not obstruct or hinder the rotation of the lower second protective plate 222, ensuring that the adjustment process of the two plates is smooth and without jamming, avoiding overload of the motor 23 or wear of the transmission structure due to improper sequence, and extending the service life of the components.

[0149] When reducing the opening angle, first rotate the lower second protective plate 222, then close the upper first protective plate 221. The closing of the second protective plate 222 first forms a basic shield, and then the closing of the first protective plate 221 covers its edge gaps, strengthening the synergistic sealing performance of the two plates and reducing the risk of rainwater seeping into the vent 11 from the gap between the plates. At the same time, the step-by-step adjustment makes the shielding area of ​​the vent 11 gradually change, avoiding sudden increases and decreases in heat dissipation efficiency, ensuring stable compressor exhaust temperature, and further improving the reliability and stability of the air conditioner outdoor unit.

[0150] Please see Figure 13 , Figure 13 A flowchart illustrating a first embodiment of this application shows a process for controlling a motor to rotate based on rainfall data, thereby rotating a protective plate to dynamically adjust the opening angle of the protective plate. A rain sensor is installed at the vent of the air conditioner outdoor unit to acquire the rainfall data at the vent. This embodiment provides step S150, which involves controlling a motor to rotate based on rainfall data, thereby rotating a protective plate to dynamically adjust the opening angle of the protective plate. Step S151a: Obtain rainfall value from rain sensor; In step S152a, if the obtained rainfall value is greater than the target rainfall value, the opening angle of the protective plate is gradually reduced until the obtained rainfall value is less than or equal to the target rainfall value.

[0151] The two steps described above are described in detail below.

[0152] In step S151a, the rain sensor 3 installed at the vent 11 directly detects the real-time rainfall intensity in the area of ​​the vent 11 (avoiding detection deviation caused by the sensor installation position being off-center), and converts the rainfall intensity into a quantified rainfall value through the detection elements inside the sensor (such as humidity-sensitive resistors and optical components).

[0153] Among them, the rain sensor 3 is installed at the air vent 11 of the air conditioner outdoor unit to directly collect the rainfall intensity data of the area of ​​the air vent 11, ensuring that the rainfall detection and the protection target (air vent 11) are accurately matched and avoiding detection deviation.

[0154] The target rainfall value refers to the rainfall intensity threshold pre-stored in the air conditioning control unit (which can be preset according to the outdoor unit protection standard and the heat dissipation requirements of the model). It is the core benchmark for determining whether enhanced protection (reducing the angle of the protective plate by 22) is needed, and it distinguishes the critical value between those that do not require additional protection and those that require enhanced protection.

[0155] In step S152a, a condition judgment is first performed. The air conditioning control unit compares the real-time rainfall value (e.g., 25 mm / h) obtained in step one with the preset target rainfall value (e.g., 15 mm / h). If the real-time rainfall value is greater than the target rainfall value, it means that the current rainfall intensity has exceeded the basic protection threshold, and there is a risk of rainwater intrusion into the ventilation opening 11, so protection needs to be strengthened.

[0156] The control unit sends a drive command to the motor 23. The motor 23 drives the protective plate 22 to gradually reduce the opening and closing angle in a preset small increment (such as 5° each time) through the transmission structure. For example, it is adjusted from the initial 45° to 40°, 35°, 30°, etc., to avoid the problem of insufficient heat dissipation of the compressor and sudden rise in exhaust temperature caused by the sudden drop in angle.

[0157] As the angle is gradually reduced, the rain sensor 3 continuously acquires the real-time rainfall value and compares it with the target rainfall value. When the real-time rainfall value drops to the target rainfall value (15 mm / h) or below (e.g., 10 mm / h), the angle reduction is stopped immediately. At this time, the angle of the protective plate 22 can both block the current rainfall from entering the ventilation opening 11 and retain sufficient ventilation area to ensure heat dissipation, thus achieving a dynamic balance between protection and heat dissipation.

[0158] The opening angle of the protective plate 22 refers to the angle formed between the protective plate 22 and the plane of the vent 11. The larger the angle, the higher the degree of opening of the vent 11 (the better the heat dissipation effect and the weaker the protection capability); the smaller the angle, the lower the degree of opening of the vent 11 (the stronger the protection capability and the weaker the heat dissipation effect).

[0159] In this embodiment of the application, the control method relies on the rain sensor 3 at the vent 11 to acquire data, which can directly capture the real rainfall in the area of ​​the vent 11, avoid the detection deviation caused by uneven rainfall distribution when the sensor is installed in other locations, provide accurate judgment basis for the adjustment of the protective plate 22, ensure that the protective action directly addresses the risk of rainwater intrusion at the vent 11, and improve the protective targeting.

[0160] When rainfall exceeds the target value, the opening angle of the protective plate 22 is gradually reduced instead of being adjusted drastically all at once. This avoids sudden changes in heat dissipation efficiency caused by a sudden decrease in ventilation area, prevents the compressor from experiencing a sudden rise in exhaust temperature due to insufficient heat dissipation, avoids damage to core components caused by temperature fluctuations, and ensures the stability of the outdoor unit's operation. At the same time, gradual adjustment reduces the instantaneous load and impact on the transmission structure when the motor 23 drives the protective plate 22, reduces component wear, and extends the service life of the device.

[0161] Furthermore, the adjustment stops when the rainfall value is less than or equal to the target rainfall value. This allows for the maximum preservation of ventilation area while meeting protection requirements, avoiding excessive obstruction that could affect heat dissipation, achieving a dynamic balance between protection and heat dissipation, and further improving the reliability and energy efficiency of the air conditioner's outdoor unit.

[0162] Please see Figure 14 , Figure 14 A flowchart illustrating a second embodiment of this application shows a process for controlling a motor to rotate based on rainfall data, thereby rotating a protective plate to dynamically adjust the opening angle of the protective plate. A rain sensor is installed at the vent of the air conditioner outdoor unit to acquire the rainfall data at the vent. This embodiment provides a step S150 for controlling a motor to rotate based on rainfall data, thereby rotating a protective plate to dynamically adjust the opening angle of the protective plate, including: Step S151b: If the rainfall value is less than the target rainfall value, then obtain the actual exhaust temperature of the air conditioning compressor. The air conditioning compressor is located inside the air conditioning outdoor unit cavity. In step S152b, if the actual exhaust temperature is greater than the exhaust temperature corresponding to the current opening and closing angle of the protective plate, the opening and closing angle of the protective plate is increased until the rainfall value reaches the target rainfall value, or the actual exhaust temperature is less than or equal to the exhaust temperature corresponding to the current opening and closing angle of the protective plate.

[0163] The two steps described above are described in detail below.

[0164] When the rainfall value at vent 11 is lower than the preset target rainfall value (the priority of protection needs is reduced), the actual exhaust temperature of the air conditioning compressor is introduced as a supplementary judgment basis. By linking the rainfall value and exhaust temperature, it is determined whether to increase the opening angle of the protective plate 22. This avoids the risk of debris intrusion caused by a single rainfall parameter (blindly increasing the angle when the rainfall is low), and can also specifically solve the problem of insufficient heat dissipation that may exist in low rainfall environments. Ultimately, it achieves a dynamic balance between protection needs and heat dissipation efficiency, ensuring the stable operation of the air conditioning outdoor unit under complex working conditions.

[0165] In step S151b, the air conditioning compressor refers to the core power component located in the outdoor unit cavity of the air conditioner, which is responsible for compressing the refrigerant to achieve heat exchange. Its exhaust temperature is a key indicator for judging whether the outdoor unit's heat dissipation is sufficient.

[0166] The exhaust temperature corresponding to the current opening angle of the protective plate 22 refers to the angle and temperature mapping reference value pre-stored in the control unit (e.g., the current opening angle of 45° corresponds to an exhaust temperature of 80°). It is the standard for judging whether the heat dissipation meets the standard under the current ventilation state, and is preset by the manufacturer based on the model test data.

[0167] First, compare the real-time rainfall value collected by the rain sensor 3 with the preset target rainfall value. For example, if the target rainfall value is 15 mm / h, and the real-time rainfall value is 8 mm / h (less than the target value), it means that the current rainfall intensity is low, the risk of rainwater intrusion into the ventilation vent 11 is small, and the priority of protection needs is reduced. At this time, there is no need to strengthen protection, and instead focus on whether the heat dissipation is sufficient.

[0168] The temperature detection component (such as the exhaust temperature sensor) corresponding to the compressor in the outdoor unit cavity collects the actual exhaust temperature of the compressor. This temperature data directly reflects the heat dissipation effect under the current ventilation state, avoiding blindly adjusting the protective plate 22 based solely on the rainfall value (for example, if there is insufficient heat dissipation when running under low rainfall but high load, the angle needs to be increased; when there is low rainfall and low load, there is no need to increase the angle, thus reducing the intrusion of debris).

[0169] In step S152b, the control unit compares the actual exhaust temperature of the compressor (e.g., 88°C) with the exhaust temperature corresponding to the current opening angle of the protective plate 22 (a preset reference value, e.g., 80°C corresponding to the current angle of 45°). If the actual exhaust temperature (88°C) is greater than the reference value (80°C), it indicates that the ventilation area corresponding to the current angle of the protective plate 22 is insufficient, and the compressor's heat dissipation is obstructed. The ventilation efficiency needs to be improved by increasing the angle. A drive command is sent to the motor 23 of the protective device 2. The motor 23 drives the protective plate 22 to increase the opening angle in the opening direction through the transmission structure (e.g., gradually adjusting from 45° to 50°, 55°, etc.). Each time the adjustment is made, the control unit simultaneously collects the latest actual exhaust temperature and rainfall value to ensure the accuracy of the adjustment.

[0170] The adjustment action continues until one of the following two conditions occurs and then terminates: (1) When the rainfall reaches the target rainfall value (e.g., the rainfall increases during the adjustment process, and the rainfall value rises from 8 mm / h to 15 mm / h (target rainfall value)): At this time, the priority of protection needs rises again, and it is necessary to stop increasing the angle to avoid the risk of rainwater intrusion; (2) The actual exhaust temperature is less than or equal to the exhaust temperature corresponding to the current angle (e.g., when the angle is adjusted to 55°, the actual exhaust temperature drops to 78°, which is lower than the reference value of 82° corresponding to the angle): At this time, the heat dissipation requirement has been met, and there is no need to continue to increase the angle, taking into account both ventilation and debris protection.

[0171] In this embodiment, by coordinating the control of both rainfall and temperature parameters, the limitations of solely relying on rainfall for adjustment are overcome, achieving a precise balance between protection and heat dissipation. When the rainfall value is less than the target rainfall value, the actual exhaust temperature of the compressor is first obtained—this temperature directly reflects whether the outdoor unit's heat dissipation is sufficient. This avoids blindly increasing the opening angle of the protective plate 22 simply because the rainfall is low (excessive ventilation is unnecessary in low-temperature weather and may even introduce more debris), ensuring that the adjustment action is more in line with the actual operating needs of the outdoor unit.

[0172] If the actual exhaust temperature exceeds the temperature threshold corresponding to the current angle, the opening angle of the protective plate can be increased by 22. This can not only improve ventilation efficiency to reduce the compressor temperature and prevent overheating from causing malfunctions, but also avoid over-adjustment through the dual stop conditions of rainfall reaching the target or temperature reaching the target: when the rainfall rises to the target rainfall value during the process of increasing the angle, it can be stopped in time to preserve the protective capability and prevent rainwater intrusion; if the temperature reaches the target first, there is no need to continue to open the angle, reducing the risk of debris entering.

[0173] This logic ensures the compressor's heat dissipation safety in low-rainfall scenarios while also addressing the protection needs arising from changes in rainfall. It reduces unnecessary adjustments to the protective plate 22, lowers losses in the motor 23 and transmission structure, and further enhances the stability and energy efficiency of the outdoor unit's operation.

[0174] In some embodiments, a rain sensor 3 is provided at the vent 11 of the outdoor unit of the air conditioner. The rain sensor 3 is used to acquire the rainfall value at the vent 11. Based on the rainfall value, the motor 23 is controlled to rotate, driving the protective plate 22 to rotate, thereby dynamically adjusting the opening and closing angle of the protective plate 22, including: If the rainfall value equals the target rainfall value, and the exhaust temperature corresponding to the current opening angle of the protective plate 22 is less than the actual exhaust temperature of the air conditioning compressor, then the operating power of the compressor will be gradually reduced until the actual exhaust temperature is less than or equal to the exhaust temperature corresponding to the current opening angle of the protective plate 22.

[0175] When the real-time rainfall value is equal to the preset target rainfall value, the opening angle of the protective plate 22 is already adapted to the current rainfall intensity (adjusting the angle would exceed the protection threshold or redundant heat dissipation). If the actual exhaust temperature of the compressor exceeds the reference exhaust temperature corresponding to the current angle (indicating insufficient heat dissipation), the heat dissipation problem is solved by "gradually reducing the operating power of the compressor" instead of adjusting the angle of the protective plate 22. Ultimately, without weakening the rain protection capability, the compressor is ensured to operate within a safe temperature range, balancing protection stability, equipment safety, and operating efficiency.

[0176] The first condition is that the rainfall value equals the target rainfall value: The control unit first compares the real-time rainfall value collected by the rainfall sensor 3 with the preset target rainfall value (e.g., both are 15mm / h) to confirm that the current rainfall intensity and the opening angle of the protective plate 22 (e.g., 30°) are accurately matched. If the angle of the protective plate 22 is increased, the ventilation opening 11 will be too large, exceeding the protection threshold and causing rainwater to intrude. If the angle is decreased, ventilation will be further restricted, exacerbating insufficient heat dissipation. Therefore, the angle of the protective plate 22 cannot be adjusted, and the heat dissipation problem can only be solved by other means.

[0177] The second condition is that the exhaust temperature corresponding to the current opening angle of the protective plate 22 is less than the actual exhaust temperature: The control unit simultaneously retrieves the preset "angle and temperature" reference value (e.g., 30° corresponds to 80°) and compares it with the actual exhaust temperature of the compressor (e.g., 85°). It is confirmed that the actual temperature exceeds the reference value, which means that the compressor is not dissipating heat under the current ventilation condition. If no intervention is taken, the exhaust temperature will continue to rise, causing compressor overload, component aging, or even failure. Therefore, control measures need to be activated.

[0178] Two conditions must be met simultaneously: if the rainfall is equal to the target value and the heat dissipation is sufficient, no adjustment is needed; if the heat dissipation is insufficient, it can be resolved by adjusting the 22-degree angle of the protective plate; only when both conditions are met simultaneously will the dedicated scheme for adjusting the compressor power be triggered to avoid ineffective adjustment or disruption of the protective balance.

[0179] The compressor operating power is gradually reduced. The compressor power is reduced in stages according to a preset range (such as 0.1kW each time) - for example, from 2.0kW to 1.8kW, 1.7kW, etc., to avoid large fluctuations in cooling / heating effect caused by sudden power drop (such as sudden rise / fall in room temperature). At the same time, it reduces the impact of sudden power change on internal components such as rotor and coil of the compressor and extends its service life.

[0180] During the power reduction process, the temperature sensor continuously collects the actual exhaust temperature of the compressor and feeds it back to the control unit in real time. The control unit then compares this temperature with the reference exhaust temperature (e.g., 80°C) corresponding to the current angle.

[0181] When the actual exhaust temperature drops to the reference temperature or below (e.g., 78°C), the control unit immediately stops reducing power. At this time, the compressor power is matched with the current ventilation status, which not only solves the previous problem of insufficient heat dissipation, but also avoids the performance deficiency caused by excessive power reduction (e.g., insufficient cooling capacity). At the same time, the 22-degree angle of the protective plate is still matched with the rainfall, achieving a triple balance of protection without weakening, heat dissipation meeting the standard, and performance without compromise.

[0182] In this embodiment, a precise and safe control scheme is provided for a specific scenario where rainfall protection meets the standard but compressor heat dissipation is insufficient, effectively balancing protection and operational performance. When the rainfall value equals the target rainfall value, the opening angle of the protective plate 22 is already adapted to the current rainfall intensity. If the angle is increased to improve heat dissipation, it will exceed the protection threshold and cause rainwater intrusion. At this time, by adjusting the compressor power instead of the protective plate 22, the heat dissipation problem can be solved without weakening the rain protection capability, avoiding the contradiction that adjusting the protective plate 22 will result in a loss of protection, while not adjusting it will result in a loss of heat dissipation.

[0183] Meanwhile, by gradually reducing the compressor's operating power, significant fluctuations in cooling or heating performance caused by sudden power drops are avoided, ensuring a good user experience and reducing the impact and wear on internal compressor components caused by power surges, thus extending the compressor's lifespan. Furthermore, by using an actual exhaust temperature less than or equal to the exhaust temperature corresponding to the current angle as the stopping condition, the power adjustment range can be precisely controlled. This avoids performance deficiencies due to excessive power reduction while ensuring the compressor operates within a safe temperature range, further improving the stability, safety, and energy efficiency balance of the outdoor unit.

[0184] The preferred embodiments of the present invention have been illustrated and described above. However, the present invention is not limited to the specific embodiments described above. Of course, those skilled in the art can make various modifications without departing from the spirit of the invention as claimed in the claims. These modifications should not be understood separately from the technical concept or prospect of the present invention.

[0185] This invention can be implemented in various forms, and its scope of claim is not limited to the embodiments described above. Therefore, any modified embodiment that includes the constituent elements within the scope of the claims of this invention should be considered to fall within the scope of the claims of this invention.

[0186] The embodiments of the present invention described above, or other embodiments thereof, are not mutually exclusive or distinct. The embodiments of the present invention described above, or other embodiments thereof, can be used in combination or in combination of their respective configurations or functions.

[0187] For example, it indicates that configuration A described in a particular embodiment and / or figure and configuration B described in another embodiment and / or figure can be combined. That is, even if no combination between the configurations is directly described, it indicates that they can be combined, except where cases where combination is impossible are explained.

[0188] The detailed description above should not be construed as limiting in all respects, but should be considered exemplary. The scope of the invention should be determined by a reasonable interpretation of the appended claims, and all modifications within the equivalent scope of the invention are included within the scope of the invention.

Claims

1. A protective device for an air conditioner outdoor unit, characterized in that, The protective device is disposed on the casing of the outdoor unit of the air conditioner and is located at the ventilation opening of the casing to protect the ventilation opening. The protective device includes: A base, which is disposed on the housing, is used to fix the protective device; A protective plate, which is rotatably mounted on the base, and the degree of obstruction of the ventilation opening is changed by rotating the protective plate; An electric motor, fixed to the base, is used to drive the protective plate to rotate; The control unit is used to control the rotation of the motor so as to drive the protective plate to rotate.

2. The protective device for an air conditioner outdoor unit according to claim 1, characterized in that, One end of the base is disposed on the housing and is used to fix the protective device; The other end of the base forms an air vent, which is located above and connected to the ventilation opening. The protective plate is located at the air vent of the base.

3. The protective device for an air conditioner outdoor unit according to claim 2, characterized in that, The protective plate includes a first protective plate and a second protective plate; The first protective plate rotates around a first rotating axis, and the second protective plate rotates around a second rotating axis. The first and second rotating axes are arranged parallel to each other on the base and distributed on opposite sides of the air vent.

4. The protective device for an air conditioner outdoor unit according to claim 3, characterized in that, The motor includes: A first motor is mounted on the base, and the first shaft of the first motor drives the first protective plate to rotate. A second motor is mounted on the base, and the second motor's second shaft drives the second protective plate to rotate. The base has a first through hole and a second through hole on its two opposite side walls; the first protective plate has a first rotating through hole and a first rotating component on its opposite sides; the first rotating shaft includes a first rotating component and a first rotating shaft. The first rotating shaft is inserted into the first rotating through hole through the first through hole on the outside of the base, and the first rotating component is inserted into the second through hole from the inside of the base. The base is provided with a third through hole and a fourth through hole on its two opposite side walls; the second protective plate is provided with a second rotating through hole and a second rotating component on its opposite sides; the second rotating shaft includes a second rotating component and a second rotating shaft. The second rotating shaft is inserted into the second rotating through hole through the third through hole on the outside of the base, and the second rotating component is inserted into the fourth through hole from the inside of the base.

5. The protective device for an air conditioner outdoor unit according to claim 1, characterized in that, The base has a water collection cavity for collecting and draining liquid that flows off the protective plate.

6. The protective device for an air conditioner outdoor unit according to claim 5, characterized in that, The ventilation opening is located at the top of the housing; The housing includes: A top cover is provided at the vent, and the top cover is hollowed out so that the vent can exchange gas with the outside through the top cover; The top cover is provided with a drain hole, and the bottom of the water collection chamber abuts against the top cover at the drain hole, through which the liquid in the water collection chamber is discharged.

7. The protective device for an air conditioner outdoor unit according to claim 5 or 6, characterized in that, The outdoor unit of the air conditioner is equipped with a condensation pipe inside its casing, and the liquid discharged from the water collection chamber is poured onto the outside of the casing where the condensation pipe is located.

8. The protective device for an air conditioner outdoor unit according to claim 1, characterized in that, The housing is equipped with a rain sensor located at the vent. When the protective plate is in its initial state, the rain sensor is blocked.

9. An outdoor unit for an air conditioner, characterized in that, include: A housing having a cavity within it and a vent for allowing gas exchange between the cavity and the outside environment; as well as The protective device as described in any one of claims 1 to 8, wherein the protective device is disposed on the housing.

10. A control method for an outdoor unit of an air conditioner, wherein the outdoor unit includes the protective device for the outdoor unit as described in any one of claims 1-8, characterized in that, include: Based on the air conditioner start command, the motor is controlled to rotate, thereby driving the protective plate to rotate to the set opening and closing angle; Control the compressor in the outdoor unit of the air conditioner to start, and obtain the rainfall value in the environment where the outdoor unit of the air conditioner is located; Control the motor to rotate, driving the protective plate to rotate to the target opening angle corresponding to the rainfall value.

11. The control method according to claim 10, characterized in that, After controlling the motor to rotate so as to rotate the protective plate to the target opening angle corresponding to the rainfall value, the method further includes: Repeat the acquisition of the rainfall value; The motor is controlled to rotate according to the rainfall value, which in turn drives the protective plate to rotate, thereby dynamically adjusting the opening and closing angle of the protective plate. The rainfall value and the opening and closing angle of the protective plate are negatively correlated.

12. The method according to claim 10 or 11, characterized in that, The protective plate includes a first protective plate and a second protective plate, and when the first protective plate overlaps with the second protective plate, the first protective plate is located on top of the second protective plate; Controlling the motor to rotate, thereby driving the protective plate to rotate, includes: When increasing the opening angle of the protective plate, first control the rotation of the first protective plate, and then control the rotation of the second protective plate; When reducing the opening angle of the protective plate, first control the rotation of the second protective plate, and then control the rotation of the first protective plate.

13. The control method according to claim 11, characterized in that, A rain sensor is installed at the ventilation opening of the outdoor unit of the air conditioner, and the rain sensor is used to obtain the rainfall value at the ventilation opening; Controlling the motor to rotate based on the rainfall value, thereby rotating the protective plate to dynamically adjust the opening and closing angle of the protective plate, including: Rainfall values ​​are obtained based on the rain sensor; If the obtained rainfall value is greater than the target rainfall value, the opening angle of the protective plate is gradually reduced until the obtained rainfall value is less than or equal to the target rainfall value.

14. The control method according to claim 11, characterized in that, A rain sensor is installed at the ventilation opening of the outdoor unit of the air conditioner, and the rain sensor is used to obtain the rainfall value at the ventilation opening; Controlling the motor to rotate based on the rainfall value, thereby rotating the protective plate to dynamically adjust the opening and closing angle of the protective plate, including: If the rainfall value is less than the target rainfall value, the actual exhaust temperature of the air conditioning compressor is obtained, and the air conditioning compressor is located in the air conditioning outdoor unit cavity; If the actual exhaust temperature is greater than the exhaust temperature corresponding to the current opening angle of the protective plate, then the opening angle of the protective plate is increased until the rainfall value reaches the target rainfall value, or the actual exhaust temperature is less than or equal to the exhaust temperature corresponding to the current opening angle of the protective plate.

15. The method according to claim 11, characterized in that, A rain sensor is installed at the ventilation opening of the outdoor unit of the air conditioner, and the rain sensor is used to obtain the rainfall value at the ventilation opening; Controlling the motor to rotate based on the rainfall value, thereby rotating the protective plate to dynamically adjust the opening and closing angle of the protective plate, including: If the rainfall value is equal to the target rainfall value, and the exhaust temperature corresponding to the current opening angle of the protective plate is less than the actual exhaust temperature of the air conditioning compressor, then the operating power of the compressor is gradually reduced until the actual exhaust temperature is less than or equal to the exhaust temperature corresponding to the current opening angle of the protective plate.

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