Top air outlet type air conditioner outdoor unit

Abstract

The utility model discloses a top-air-out type air conditioner outdoor unit which comprises a machine shell, an air inlet and an air outlet, a mounting cavity is defined in the machine shell, and an outdoor air outlet and an outdoor air inlet are formed in the top and the side portion of the machine shell correspondingly; the electric control box is connected with the machine shell and located outside the mounting cavity, a containing cavity used for mounting the electric control board is defined in the electric control box, and a heat dissipation air inlet part is arranged on the electric control box; the air cooling radiator is mounted on the side face, facing the mounting cavity, of the electric control board, and cooling fins of the air cooling radiator penetrate through the electric control box and extend into the mounting cavity; the air guide piece is arranged in the mounting cavity, the air guide piece is connected with the electric control box so as to cover at least part of the heat dissipation fins and the heat dissipation air inlet part, and a heat dissipation air outlet is formed in the top of the air guide piece; the baffle is arranged above the air-cooled radiator, the downward projection of the baffle in the height direction of the machine shell covers the radiating fins, the height of the bottom end of the baffle is not larger than that of the blade tips of the outdoor fan, foreign matter can be effectively prevented from entering the radiating fin area, filth blockage of the radiating fin area is prevented, and therefore the radiating efficiency is improved.

Description

A top-discharge air conditioner outdoor unit Technical Field

[0001] This application relates to the field of air conditioning technology, and in particular to a top-discharge type outdoor air conditioning unit. Background Technology

[0002] Top-discharge air conditioning outdoor units are a common type of air conditioning outdoor unit. In a top-discharge air conditioning outdoor unit, the outdoor air outlet is located at the top of the casing, the outdoor air inlet is located on the side of the casing, the outdoor heat exchanger is installed along the height of the outdoor unit and extends along the inner circumferential wall of the casing, and the outdoor fan is located inside the casing and is positioned corresponding to the outdoor air outlet along the height of the casing. Top-discharge air conditioning outdoor units also include an electrical control box, which provides a reliable operating environment for the electrical control board. During operation, the components on the electrical control board generate a large amount of heat, causing its temperature to rise rapidly. If this heat is not dissipated in time, it can lead to a decrease in the performance of the components or even burnout, reducing the operating efficiency and reliability of the entire air conditioning system. Therefore, to ensure the stable operation of the air conditioning outdoor unit, effective heat dissipation of the electrical control box is essential.

[0003] In related technologies, the air-cooled radiator is one of the key components for heat dissipation in the outdoor unit of an air conditioner. It is usually installed on the side of the electronic control board facing the outdoor fan and consists of multiple heat dissipation fins. The heat dissipation fins of the air-cooled radiator penetrate through the electronic control box and extend into the mounting cavity. These heat dissipation fins have a large surface area, which can effectively transfer the heat generated by the electronic control board to the surrounding air, and dissipate heat using the airflow generated by the outdoor fan.

[0004] Top-discharge air conditioner outdoor units are installed outdoors, where dust, poplar fluff, willow catkins, leaves, and other foreign objects can easily drift into the installation cavity through the top outdoor air outlet. This exposes the air-cooled radiator to this environment, making it prone to clogging. Clogged radiator fins reduce heat dissipation efficiency, increase the temperature of components on the control board, and affect cooling performance and the lifespan of the control board. In related technologies, the radiator fins are directly exposed to dust and impurities, lacking effective protective measures, and cannot meet the requirements for long-term stable operation in harsh environments.

[0005] In view of the above, this application is hereby submitted. Summary of the Invention

[0006] This utility model aims to at least partially solve one of the technical problems in related technologies. Therefore,

[0007] According to embodiments of this disclosure, a top-discharge air conditioning outdoor unit is provided, comprising:

[0008] A housing having an internal mounting cavity, the housing including an outdoor air outlet and an outdoor air inlet communicating with the mounting cavity, the outdoor air outlet being located at the top of the housing and the outdoor air inlet being located on the side wall of the housing.

[0009] An outdoor fan is disposed in the mounting cavity and near the outdoor air outlet, and the axis of the outdoor fan extends along the height direction of the housing.

[0010] An outdoor heat exchanger is located inside the mounting cavity, and the outdoor heat exchanger is positioned close to the outdoor air inlet.

[0011] A compressor is disposed within the mounting cavity, and the compressor is located below the outdoor fan;

[0012] An electrical control box is connected to the housing and located outside the mounting cavity. The electrical control box defines a receiving cavity and has a heat dissipation air inlet that connects the mounting cavity to the external environment.

[0013] The electronic control board is located within the receiving cavity;

[0014] An air-cooled radiator is installed on the side of the electronic control board facing the mounting cavity, and the heat dissipation fins of the air-cooled radiator extend through the electronic control box into the mounting cavity;

[0015] An air guide is disposed in the mounting cavity. The air guide is connected to the electrical control box to cover at least part of the heat dissipation fins and the heat dissipation air inlet. The top of the air guide is provided with a heat dissipation air outlet communicating with the mounting cavity.

[0016] A baffle is provided above the air-cooled radiator and its top end is connected to the electrical control box. The projection of the baffle downward along the height direction of the housing covers the heat dissipation fins. The bottom end of the baffle is not higher than the height of the blade tip of the outdoor fan.

[0017] The above technical solution has the following advantages or beneficial effects: by setting a baffle and making the bottom of the baffle lower than the tip of the outdoor fan blades, and the projection of the baffle downward along the height of the casing covering the heat dissipation fins, it can effectively block foreign objects from entering the heat dissipation fin area, prevent them from getting dirty and clogged, thereby improving heat dissipation efficiency, ensuring the normal operating temperature of the components on the control board, improving cooling performance and extending the life of the control board.

[0018] According to an embodiment of this disclosure, the baffle is provided with a plurality of ventilation louvers.

[0019] The above technical solution has the following advantages or beneficial effects: setting several ventilation louvers on the baffle can not only block foreign objects from entering, but also ensure air circulation, so that the air-cooled radiator can be effectively dissipated, and avoid the heat dissipation effect being affected by adding baffles.

[0020] According to an embodiment of this disclosure, the projection of the ventilation louvers onto the electrical control box extends along the height direction of the housing.

[0021] The above technical solution has the following advantages or beneficial effects: the projection of the ventilation louvers on the electrical control box extends along the height of the casing, making it difficult for dust and impurities to enter the gap between the baffle and the electrical control box through the ventilation louvers, thus achieving an effective balance between dust prevention and heat dissipation.

[0022] According to an embodiment of this disclosure, in the axial direction of the outdoor fan, the distance between the bottom end of the baffle and the blade tip of the outdoor fan is m, where m < 40 mm.

[0023] The above technical solution has the following advantages or beneficial effects: the vertical distance between the bottom of the baffle and the tip of the outdoor fan blades is set within a reasonable range, so that the baffle can fully play the role of dust prevention while ensuring a good airflow, ensuring the smooth flow of heat dissipation airflow and heat dissipation effect, and enabling the outdoor fan to effectively remove the heat from the air-cooled radiator.

[0024] According to an embodiment of this disclosure, in the axial direction of the outdoor fan, the distance between the bottom end of the baffle and the blade tip of the outdoor fan is m, where m satisfies: m≥40mm, m≤60mm.

[0025] The above technical solution has the following advantages or beneficial effects: by setting the distance m within a reasonable range, the baffle can fully play its role in dust prevention while reducing the noise of the outdoor fan, which is conducive to improving the user experience.

[0026] According to an embodiment of this disclosure, the baffle includes a first plate, a second plate, and a third plate connected sequentially from top to bottom. The end of the first plate away from the second plate is connected to the side wall of the electrical control box. The third plate forms an acute angle α with a plane perpendicular to the axis of the outdoor fan, where α ≥ 10°.

[0027] The above technical solution has the following advantages or beneficial effects: the baffle can better guide the airflow along a specific direction, so that the airflow passing through the heat dissipation fins can flow out more smoothly through the ventilation louvers, and then, driven by the outdoor fan, it can be discharged to the outside through the outdoor air outlet, thereby improving the heat dissipation efficiency.

[0028] According to an embodiment of this disclosure, the second plate extends along the axial direction of the outdoor fan, and the horizontal distance between the second plate and the outdoor fan is L, where L ≥ 15 mm.

[0029] The above technical solution has the following advantages or beneficial effects: the above setting ensures a safe distance between the baffle and the outdoor fan, prevents collision or interference with the outdoor fan, ensures the normal operation of the outdoor fan, and improves the heat dissipation effect.

[0030] According to an embodiment of this disclosure, an air outlet duct is defined between the baffle and the electrical control box, and the air outlet duct has a trend of being wide at the bottom and narrow at the top.

[0031] The above technical solution has the following advantages or beneficial effects: the airflow exiting the heat dissipation fins is hot airflow, which tends to rise. By setting the air outlet duct to be wide at the bottom and narrow at the top, the airflow can gradually accelerate after entering the air outlet duct, increasing the wind speed and thus more effectively carrying away the heat around the air-cooled radiator. At the same time, the above setting makes the baffle tend to slope downwards, avoiding the accumulation of dust and impurities on the baffle.

[0032] According to embodiments of this disclosure, the electrical control box includes:

[0033] A support plate, connected to the housing, is used to separate the receiving cavity from the mounting cavity;

[0034] A base plate is provided on the side of the support plate opposite to the mounting cavity, and is used to form the bottom wall of the receiving cavity;

[0035] A through section is provided on the support plate and located above the heat dissipation air inlet section, for the heat dissipation fins to pass through;

[0036] The housing is mounted on the support plate and is used to mount the electronic control board;

[0037] The cover is connected to and encloses the support plate and the bottom plate to form the receiving cavity with an open top. The heat dissipation air inlet is opened on the support plate and located below the bottom plate.

[0038] The above technical solution has the following advantages or beneficial effects: the cover, support plate, and base plate together form a cavity, providing a reliable installation and working environment for the electronic control board. Simultaneously, placing the heat dissipation air intake on the support plate and below the base plate can, to a certain extent, prevent rainwater and dust from entering the installation cavity through the heat dissipation air intake.

[0039] According to embodiments of this disclosure, a top-discharge air conditioning outdoor unit is also provided, comprising:

[0040] A housing having an internal mounting cavity, the housing including an outdoor air outlet and an outdoor air inlet communicating with the mounting cavity, the outdoor air outlet being located at the top of the housing and the outdoor air inlet being located on the side wall of the housing.

[0041] An outdoor fan is disposed in the mounting cavity and near the outdoor air outlet, and the axis of the outdoor fan extends along the height direction of the housing.

[0042] An outdoor heat exchanger is located inside the mounting cavity, and the outdoor heat exchanger is positioned close to the outdoor air inlet.

[0043] A compressor is disposed within the mounting cavity, and the compressor is located below the outdoor fan;

[0044] An electrical control box is connected to the housing and located outside the mounting cavity, and the electrical control box defines a receiving cavity;

[0045] The electronic control board is located within the receiving cavity;

[0046] An air-cooled radiator is installed on the side of the electronic control board facing the mounting cavity, and the heat dissipation fins of the air-cooled radiator extend into the mounting cavity;

[0047] An air guide is connected to the electrical control box to form a heat dissipation air duct. At least part of the heat dissipation fins are located in the heat dissipation air duct. The bottom of the heat dissipation air duct is connected to the outdoor environment. The top of the heat dissipation air duct is provided with a heat dissipation air outlet. The air from the external environment enters the heat dissipation air duct and carries away the heat of the air-cooled radiator. Then, it flows into the mounting cavity through the heat dissipation air outlet.

[0048] A baffle is disposed above the air-cooled radiator. The bottom end of the baffle is close to the outdoor fan relative to the top end of the baffle. The projection of the baffle downward along the height direction of the housing covers the heat dissipation fins. The height of the bottom end of the baffle is not higher than the height of the blade tip of the outdoor fan.

[0049] The above technical solution has the following advantages or beneficial effects: By setting a baffle with its bottom end relatively close to the outdoor fan and its downward projection along the height of the casing covering the heat dissipation fins, foreign objects can be effectively prevented from entering the area where the heat dissipation fins are located. Simultaneously, the air guide defines the heat dissipation duct, allowing air from the external environment to flow into the mounting cavity through the duct, carrying away heat from the air-cooled radiator, thus ensuring the normal operating temperature of the electronic control board and improving the cooling performance and reliability of the outdoor unit of the air conditioner. Attached Figure Description

[0050] Figure 1 is a structural schematic diagram of the outdoor unit of the top-discharge air conditioner of this application;

[0051] Figure 2 is a structural schematic diagram of the outdoor unit of the top-discharge air conditioner of this application without the air outlet cover;

[0052] Figure 3 is a structural schematic diagram of the outdoor unit of the top-discharge air conditioner of this application without the top cover and air outlet cover;

[0053] Figure 4 is a schematic diagram of the internal structure of the outdoor unit of the top-discharge air conditioner of this application.

[0054] Figure 5 is a structural schematic diagram of the outdoor unit of the top-discharge air conditioner of this application from another perspective;

[0055] Figure 6 is a schematic diagram of the internal structure of the outdoor unit of the top-discharge air conditioner of this application;

[0056] Figure 7 is a schematic diagram of the structure of the outdoor unit of the top-discharge air conditioner of this application, which has an air guide component.

[0057] Figure 8 is a schematic diagram of the internal structure of the outdoor unit of the top-discharge air conditioner of this application, which has a baffle.

[0058] Figure 9 is a cross-sectional view of the outdoor unit of the top-discharge air conditioner of this application;

[0059] Figure 10 is a magnified view of point C in Figure 9;

[0060] Figure 11 is a diagram showing the airflow path in the electrical control box of the outdoor unit of the top-discharge air conditioner of this application;

[0061] Figure 12 is a structural schematic diagram of the baffle in the outdoor unit of the top-discharge air conditioner of this application;

[0062] Figure 13 is a partial schematic diagram of the outdoor unit of the top-discharge air conditioner of this application;

[0063] Figure 14 is a schematic diagram of the electrical control components in the outdoor unit of the top-discharge air conditioner of this application.

[0064] Figure 15 is an exploded schematic diagram of the electrical control components in the outdoor unit of the top-discharge air conditioner of this application;

[0065] Figure 16 is a schematic diagram of the outdoor unit of the top-discharge air conditioner of this application, omitting the cover;

[0066] Figure 17 is a schematic diagram of the connection between the box and the electronic control board in the outdoor unit of the top-discharge air conditioner of this application.

[0067] Figure 18 is a schematic diagram of the connection between the box and the electronic control board in the outdoor unit of the top-discharge air conditioner of this application from another perspective.

[0068] Figure 19 is an exploded view of the casing and electrical control board in the outdoor unit of the top-discharge air conditioner of this application;

[0069] Figure 20 is a structural schematic diagram of the casing in the outdoor unit of the top-discharge air conditioner of this application.

[0070] In the above figures: 100, outdoor unit of top-discharge air conditioner; 1, casing; 11, outdoor air inlet; 12, outdoor air outlet; 13, top cover; 14, chassis; 15, side panel; 16, air outlet cover; 17, mounting cavity; 2, outdoor heat exchanger; 3, outdoor fan; 4, compressor; 5, electrical control box; 51, base plate; 512, ventilation air inlet; 52, electrical control board; 521, heating module; 53, support plate; 531, through section; 532, ventilation air outlet; 54, housing; 541, opening; 542, support frame; 55, cover; 56, air-cooled radiator; 561, heat dissipation fins; 57, heat dissipation air inlet; 58, receiving cavity; 59, mounting plate; 10, baffle; 101, ventilation louvers; 102, first plate; 103, second plate; 104, third plate; 105, air outlet duct; 20, air guide; 201, heat dissipation air outlet; 202, heat dissipation duct. Detailed Implementation

[0071] To make the objectives and implementation methods of this application clearer, the exemplary implementation methods of this application will be clearly and completely described below with reference to the accompanying drawings of the exemplary embodiments of this application. Obviously, the exemplary embodiments described are only some embodiments of this application, and not all embodiments.

[0072] It should be noted that the brief descriptions of terms in this application are only for the convenience of understanding the embodiments described below, and are not intended to limit the embodiments of this application. Unless otherwise stated, these terms should be understood in their ordinary and common meaning.

[0073] The terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar or related objects or entities, and do not necessarily imply a specific order or sequence, unless otherwise specified. It should be understood that such terms are interchangeable where appropriate.

[0074] The terms “include” and “have”, and any variations thereof, are intended to cover but not exclusively include, for example, a product or device that includes a range of components is not necessarily limited to all of the components that are clearly listed, but may include other components that are not clearly listed or that are inherent to such product or device.

[0075] The top-discharge air conditioner outdoor unit provided in this application can have various implementation forms. Figures 1 to 20 show one specific embodiment of the top-discharge air conditioner outdoor unit of this application. In this embodiment, the top-discharge air conditioner outdoor unit 100 serves as the outdoor unit of the air conditioner, used to carry indoor heat to the outside.

[0076] As shown in Figure 1, the top-discharge air conditioner outdoor unit 100 provided in this application may include a housing 1. The housing 1 is installed outdoors and forms the overall appearance of the air conditioner outdoor unit 100.

[0077] The housing 1 defines an installation cavity 17, which is used to install and fix the various components of the outdoor unit 100 of the air conditioner. Referring to Figure 1, the housing 1 has a top and a bottom, which are opposite ends of the housing 1 in the height direction.

[0078] The housing 1 may include an outdoor air outlet 12, which is located at the top of the housing 1. The outdoor air outlet 12 communicates with the mounting cavity 17 and serves as an outlet for the heat-exchanged air to flow out from inside the housing 1.

[0079] The housing 1 may include an outdoor air inlet 11, which is located on the side wall of the outer periphery of the housing 1. The outdoor air inlet 11 communicates with the mounting cavity 17 and serves as the inlet for external air to flow into the housing 1.

[0080] Referring to Figures 1 and 2, in this embodiment, the air outlet direction of the outdoor air inlet 11 intersects with the air inlet direction of the outdoor air outlet 12.

[0081] As shown in Figure 1, the housing 1 may include a top cover 13, which is located at the top of the housing 1, and an outdoor air outlet 12 is provided on the top cover 13. In this embodiment, the outdoor air outlet 12 is circular and located in the middle of the top cover 13.

[0082] The housing 1 may include a side panel 15, which surrounds the edge of the top cover 13. As shown in Figure 2, the side panel 15 is located below the top cover 13, and the outdoor air inlet 11 is opened on the side panel 15.

[0083] The top cover 13 can be detachably connected to the side plate 15 by means of bolts or screws.

[0084] As shown in Figure 2, the housing 1 may include a chassis 14, which is disposed opposite to the top cover 13 along the height direction of the housing. The chassis 14 is connected to the lower part of the side plate 15, and the chassis 14, the side plate 15 and the top cover 13 together define and enclose to form a mounting cavity 17.

[0085] In some embodiments, the top cover 13 is connected to an air guide ring, which is located at the outdoor air outlet 12.

[0086] The air guide ring internally defines a cavity extending along the height direction of the housing 1. The impeller of the outdoor fan 3 is located within the cavity. The air guide ring is used to guide the airflow within the mounting cavity 17, enabling the outdoor fan 3 to better perform its air guiding function.

[0087] In some embodiments, the air guide ring can be integrally formed with the top cover 13 to facilitate the manufacturing and assembly of the outdoor unit of the air conditioner.

[0088] As shown in Figure 1, an air outlet shroud 16 is connected to the casing 1. The air outlet shroud 16 is located at the air outlet 12 and covers the outside of the air guide ring. The air outlet shroud 16 can guide the airflow to be discharged in a specific direction. By optimizing the airflow path, the air outlet shroud 16 ensures that the heat exchange air discharged by the air conditioner can be quickly dispersed, reducing the energy loss during the operation of the outdoor unit 100 of the air conditioner and improving the performance and energy efficiency of the air conditioning system.

[0089] In some embodiments of this application, as shown in FIG3, the top-discharge air conditioner outdoor unit 100 may include an outdoor heat exchanger 2, which is disposed in the mounting cavity 17 for heat exchange with the air inside the casing 1. The outdoor heat exchanger 2 is mounted on the chassis 14 and is positioned close to the outdoor air inlet 11.

[0090] Referring to Figure 4, the outdoor heat exchanger 2 is installed inside the outdoor air inlet 11 to exchange heat with the outdoor air entering the installation cavity 17 through the outdoor air inlet 11.

[0091] The outdoor heat exchanger 2 extends along the inner peripheral wall of the casing 1 within the mounting cavity 17 to increase the heat exchange area of ​​the outdoor heat exchanger 2 within the mounting cavity 17, thereby increasing the heat exchange effect of the outdoor heat exchanger 2.

[0092] In this embodiment, the outdoor heat exchanger 2 is installed on the chassis 14, and the outdoor heat exchanger 2 is enclosed on the chassis 14 to form a semi-enclosed heat exchange space, which increases the area of ​​the outdoor heat exchanger 2 and thus increases the heat exchange effect of the outdoor heat exchanger 2.

[0093] In some embodiments of this application, the outdoor unit 100 of the air conditioner may include an outdoor fan 3. The outdoor fan 3 is disposed in the mounting cavity 17 and is used to drive outdoor air outside the housing 1 to enter the mounting cavity 17 through the outdoor air inlet 11, and drive the air in the mounting cavity 17 to flow along the outdoor air inlet 11 toward the outdoor air outlet 12.

[0094] The outdoor fan 3 is positioned corresponding to the outdoor air outlet 12. Referring to Figure 2, the outdoor fan 3 is located inside the outdoor air outlet 12.

[0095] Outdoor fan 3 can be an axial fan. When an axial fan is used in the outdoor unit 100 of an air conditioner, its low aerodynamic noise and high air volume can improve the performance of the outdoor unit, thereby improving the performance of the entire air conditioning system.

[0096] The outdoor unit 100 of the air conditioner may include a compressor 4, which is located in the mounting cavity 17 within the housing 1. Referring again to Figure 4, the compressor 4 is mounted on the chassis 14 and located below the outdoor fan 3.

[0097] An air conditioner may include an indoor unit, also known as an indoor air conditioning unit, which is installed indoors and used for heat exchange with the indoor environment. The indoor air conditioning unit includes an indoor heat exchanger.

[0098] The air conditioner may include a throttling device for flow control. The throttling device may be located in the indoor unit of the air conditioner or in the outdoor unit 100 of a top-discharge air conditioner.

[0099] An air conditioner may include a refrigerant circuit. A refrigerant circuit is formed by connecting pipes to the indoor unit and the top-discharge outdoor unit 100 of the air conditioner, allowing the refrigerant to circulate sequentially through the compressor 4, condenser, throttling device, and evaporator, thus enabling indoor cooling or heating.

[0100] The indoor heat exchanger and outdoor heat exchanger 2 are used as condensers or evaporators. When the indoor heat exchanger is used as a condenser, the air conditioner is used as a heater in heating mode; when the indoor heat exchanger is used as an evaporator, the air conditioner is used as a cooler in cooling mode.

[0101] Refrigeration and heating cycles include compression, condensation, expansion, and evaporation processes. They provide cooling or heating to the indoor space through the heat absorption and release processes of the refrigerant, thereby regulating the temperature of the indoor space.

[0102] Compressor 4 compresses the refrigerant gas into a high-temperature and high-pressure state and discharges the compressed refrigerant gas, which then flows into the condenser.

[0103] The condenser condenses the compressed, high-temperature, high-pressure gaseous refrigerant into a liquid refrigerant, and the heat is released to the surrounding environment through the condensation process.

[0104] The liquid refrigerant flowing out of the condenser enters the throttling device, which expands the high-temperature, high-pressure liquid refrigerant after condensation in the condenser into a low-pressure liquid refrigerant.

[0105] The low-pressure liquid refrigerant flowing out of the throttling device enters the evaporator. As the liquid refrigerant flows through the evaporator, it absorbs heat and evaporates into a low-temperature, low-pressure refrigerant gas. The low-temperature, low-pressure refrigerant gas returns to the compressor 4.

[0106] The evaporator achieves its cooling effect by exchanging heat with the material being cooled using the latent heat of refrigerant evaporation. Throughout this entire cycle, the air conditioner regulates the temperature of the indoor space.

[0107] In some embodiments of this application, the chassis 14 may be a quadrilateral structure with chamfered corners, and the housing 1 may be a generally cuboid structure.

[0108] The top-discharge air conditioner outdoor unit 100 may include an electronic control assembly for controlling the operating status of multiple components in the top-discharge air conditioner outdoor unit 100. A portion of the electronic control assembly is located in the mounting cavity 17.

[0109] The electronic control components may include an electronic control board 52, which is used to receive signals, analyze signals, and issue control commands to realize the electronic control functions of the top-discharge air conditioner outdoor unit 100.

[0110] The electronic control board 52 is electrically connected to at least the compressor 4, the throttling device, and the outdoor fan 3 to control the operation of the compressor, the throttling device, and the outdoor fan.

[0111] It is understandable that the electronic control board 52 is equipped with the components required to control the operation of the top-discharge air conditioner outdoor unit 100. This is prior art in the field and will not be described in detail here.

[0112] The electronic control assembly may include an electronic control box 5, which is mounted on the housing 1 and located outside the mounting cavity 17. As shown in Figure 2, the electronic control box 5 is positioned above the chamfered corner of the chassis 14.

[0113] Referring to Figure 7, the inside of the electrical control box 5 has a receiving cavity 58, which is used to receive the electrical control board 52, so as to provide a reliable installation and working environment for the electrical control board 52.

[0114] It is understandable that the cavity 58 here can be closed or partially open, and should be regarded as a three-dimensional space.

[0115] Referring to Figures 6 and 7, in this embodiment, the top of the receiving cavity 58 has an opening, which cooperates with the top cover 13 of the housing 1 to cover the opening, thereby preventing dust, impurities, rainwater and the like from entering the receiving cavity 58 through the opening.

[0116] During operation, the components on the electronic control board 52 generate a lot of heat, causing their temperature to rise rapidly. If they cannot be dissipated in time, the performance of the components will be reduced or even burned out.

[0117] In order to dissipate heat from the electronic control board 52 and ensure its normal operation, in some embodiments, the top electronic control assembly may include a heat sink.

[0118] The heat sink is installed on the side of the control board 52 facing the mounting cavity 17. It absorbs and dissipates the heat generated by the control board 52 into the surrounding air through heat conduction, thus playing a role in heat dissipation for the control box 5.

[0119] In this embodiment, the heat sink can be an air-cooled heat sink 56. Referring to FIG6, the heat dissipation fins 561 of the air-cooled heat sink 56 penetrate through the electrical control box 5 and extend into the mounting cavity 17, so as to use the airflow generated by the outdoor fan to carry away the heat around the heat dissipation fins 561, thereby improving the heat dissipation effect of the electrical control components.

[0120] It is understood that the air-cooled heat sink 56 may include a base plate, which is connected to the electronic control board. The air-cooled heat sink 56 may include multiple heat dissipation fins 56 disposed on the base plate. The multiple heat dissipation fins 56 are arranged in the same direction and are spaced apart along the same direction. The arrangement of heat dissipation fins 56 can increase the heat dissipation area of ​​the air-cooled heat sink 56, and the gaps between the heat dissipation fins 56 facilitate airflow and heat dissipation.

[0121] Referring to Figure 6, the heat dissipation fins 561 of the air-cooled radiator 56 penetrate through the electrical control box 5 and extend into the mounting cavity 17, so as to use the airflow generated by the outdoor fan to carry away the heat around the heat dissipation fins 561 and improve the heat dissipation effect of the electrical control components.

[0122] Furthermore, the electronic control component may include an air guide 20 located in the mounting cavity 17. By setting the air guide 20, the airflow can be guided so that the air can flow along a predetermined path, thereby improving the heat dissipation efficiency.

[0123] Referring to Figure 7, the air guide 20 is connected to the electrical control box 5 to cover at least part of the heat dissipation fins 561. This arrangement allows the air guide 20 and the electrical control box 5 to form a relatively closed and independent heat dissipation area, which can isolate the heat dissipation fins 561 from external debris, while ensuring the concentration and efficiency of heat dissipation.

[0124] In this embodiment, the air guide 20 defines a heat dissipation duct 202. The bottom of the heat dissipation duct 202 is connected to the outdoor environment, and the top of the heat dissipation duct 202 is provided with a heat dissipation outlet 201. The air from the external environment enters the heat dissipation duct 202 and carries away the heat from the air-cooled radiator 56. Then, it flows into the mounting cavity 17 through the heat dissipation outlet 201 and is discharged to the outdoor environment by the outdoor fan. This avoids heat accumulation that could cause the temperature of the control board 52 to rise, thereby ensuring the normal operating temperature of the control board 52 and improving the cooling performance and reliability of the outdoor unit of the air conditioner.

[0125] The above configuration allows the heat dissipation duct 202 to draw in air from the bottom and exit from the top, which conforms to the characteristic of hot airflow flowing upwards. This prevents the heat dissipation duct 202 from failing to function effectively due to chaotic or obstructed airflow direction, thus affecting heat dissipation efficiency and cooling performance.

[0126] Referring to Figure 5, in some other embodiments, the electrical control box 5 is provided with a heat dissipation air inlet 57, and the air guide 20 is connected to the electrical control box 5 to cover at least part of the heat dissipation fins 561 and the heat dissipation air inlet 57.

[0127] The heat dissipation air inlet 57 connects the mounting cavity 17 to the external environment, serving as an inlet for air to flow into the external environment of the housing 11. By providing a heat dissipation air inlet, it is convenient to introduce external air, providing the necessary air source for subsequent heat dissipation processes.

[0128] Referring to Figure 9, the heat dissipation air inlet 57 is located below the heat dissipation fins 561, and the top of the air guide 20 is provided with a heat dissipation air outlet 201 that communicates with the mounting cavity 17. The heat dissipation air inlet 57 and the heat dissipation air outlet 201 communicate to form a heat dissipation air duct 202.

[0129] Referring to Figures 9 and 11, the above arrangement allows the heat dissipation fins 561 to be located in the heat dissipation duct 202. When the outdoor fan operates, it drives the air in the external environment to enter the heat dissipation duct 202 through the lower heat dissipation air inlet 57, and flows through the heat dissipation fins 561 to carry away heat. The air then flows out through the heat dissipation air outlet 201 and finally flows out to the external environment through the outdoor air outlet 12, thus achieving an effective heat dissipation cycle.

[0130] In this embodiment, the heat dissipation outlet 201 is an open opening at the top of the air guide 20.

[0131] In existing technology, the outdoor unit 100 of a top-discharge air conditioner is installed outdoors, with the outdoor air outlet 12 located at the top of the casing 1. Dust, cottonwood fluff, willow catkins, leaves, and other impurities can drift into the mounting cavity 17 from the air outlet shroud. The top of the air guide 20 has a heat dissipation outlet 201, which exposes the top of the air-cooled radiator 56 to harsh environments, making it highly susceptible to clogging. Clogging of the heat dissipation fins 561 reduces heat dissipation efficiency, leading to increased temperature of components on the electronic control board 52, affecting cooling performance, and in severe cases, impacting the lifespan of the components.

[0132] To solve the above-mentioned technical problems, in this embodiment, the top-discharge air conditioner outdoor unit 100 may include a baffle 10, which is disposed above the air-cooled radiator 56.

[0133] Referring to Figures 8 to 10, in this embodiment, the top of the baffle 10 is connected to the electrical control box 5, which can form a physical barrier above the air-cooled radiator 56, effectively preventing foreign objects such as sand, poplar catkins, willow catkins, and leaves from drifting into the installation cavity 17 from the outdoor air outlet 12 and clogging the heat dissipation fins 561.

[0134] Referring to Figure 10, the downward projection of the baffle 10 along the height direction of the casing 1 covers the heat dissipation fins 561, ensuring that the baffle 10 can fully cover the upper area of ​​the heat dissipation fins 561. The bottom of the baffle 10 is no higher than the height of the blade tip of the outdoor fan, ensuring effective protection for the heat dissipation fins 561.

[0135] In this embodiment, by setting a baffle 10 and making the bottom of the baffle 10 lower than the height of the blade tip of the outdoor fan, and by having the projection of the baffle 10 downward along the height direction of the casing 1 cover the heat dissipation fins 561, foreign objects can be effectively blocked from entering the heat dissipation fins 561 area, preventing them from getting dirty and clogged, thereby improving heat dissipation efficiency, ensuring the normal operating temperature of the components on the electronic control board 52, improving cooling performance and extending the life of the electronic control board 52.

[0136] Of course, in some embodiments, the side end of the baffle 10 can be connected to the electrical control box 5. In this case, it is only necessary to satisfy the following: the bottom end of the baffle 10 is closer to the outdoor fan 3 than the top end of the baffle 10, the projection of the baffle 10 downward along the height direction of the casing covers the heat dissipation fins, and the height of the bottom end of the baffle is not higher than the height of the blade tip of the outdoor fan.

[0137] In some embodiments, in order not to affect the heat dissipation effect of the air-cooled radiator 56, a plurality of ventilation louvers 101 are provided on the baffle 10. The ventilation louvers 101 allow air circulation, meet the heat dissipation requirements, and can block large particles of foreign objects from entering directly, thus combining dust prevention and heat dissipation functions, so that the air-cooled radiator 56 can be effectively dissipated, and the heat dissipation effect is not affected by adding the baffle 10.

[0138] In this embodiment, the projection of the ventilation louver 101 onto the electrical control box 5 extends along the height direction of the housing 1. That is to say, the ventilation louver 101 tends to be vertically arranged.

[0139] The vertical arrangement of the ventilation louvers 101 conforms to the natural law of hot air rising, which can guide the airflow direction, allowing the hot air passing through the heat dissipation fins 561 to be quickly discharged, optimizing the heat dissipation airflow field, reducing airflow dead zones, and improving heat dissipation efficiency.

[0140] Meanwhile, by setting the projection of the ventilation louvers 101 on the electrical control box 5 to extend along the height direction of the casing 1, the horizontal ventilation area can be reduced, making it difficult for dust and impurities to enter the space between the baffle 10 and the electrical control box 5 through the ventilation louvers 101, reducing the possibility of foreign objects drifting in horizontally, and achieving an effective balance between dust prevention and heat dissipation.

[0141] In some embodiments of this application, referring to FIG10, the distance between the bottom end of the baffle 10 and the blade tip of the outdoor fan in the axial direction of the outdoor fan is m. m≤60mm.

[0142] By controlling the distance between the bottom of the baffle 10 and the tip of the outdoor fan blades within a reasonable range, the dustproof effect of the baffle 10 is ensured, the airflow of the outdoor fan is not excessively interfered with, and the noise generation is reduced.

[0143] The distance m cannot be too large. An excessively large distance m would result in an excessively large vertical distance between the bottom of the baffle 10 and the outdoor fan, increasing the height of the casing 1 and affecting the wind performance. To avoid increasing the overall size of the unit, the distance m is set to no greater than the first parameter value, which can be any value between 55mm and 60mm.

[0144] When designing, consider selecting a suitable and specific parameter. For example, the first parameter value could be 60mm to meet the requirements for heat dissipation and dust protection.

[0145] It should be noted that in this embodiment, without considering increasing the height of the casing 1, the distance m is set within the range of 0 to 60 mm. A reasonable distance setting helps maintain the uniformity of the outdoor fan's airflow and avoids airflow turbulence caused by the baffle 10 being too close to or too far from the fan.

[0146] In some embodiments of this application, the distance between the bottom end of the baffle 10 and the blade tip of the outdoor fan is m. m ≥ 0 mm. m ≤ 40 mm.

[0147] In this embodiment, the distance m is set to: m≥0mm, m≤40mm. The layout design within this size range ensures dustproof effect while also prioritizing good airflow, allowing air to pass smoothly through the air-cooled heat sink 56. This ensures the heat sink's air output efficiency, helps maintain the heat sink's normal operating temperature, guarantees its efficient heat dissipation performance, and thus keeps the temperature of the components on the electronic control board 52 within a reasonable range. This ensures stable cooling performance and also helps extend the module's service life.

[0148] In some embodiments of this application, the distance between the bottom end of the baffle 10 and the blade tip of the outdoor fan is m. m>40mm. m≤60mm.

[0149] In this embodiment, the distance m is set to: m > 40mm and m ≤ 60mm. This layout design within this size range ensures dustproof performance while reducing the noise of the outdoor fan, thus improving the user experience.

[0150] Referring to Figure 12, in some embodiments of this application, the baffle 10 may include a first plate 102, the top of which is connected to the side wall of the electrical control box 5, so that the baffle 10 and the electrical control box 5 form an integral structure, which improves the stability and reliability of the connection, and also facilitates installation and fixing.

[0151] The baffle 10 may include a second plate 103, the top end of which is connected to the bottom end of the first plate 102.

[0152] The baffle 10 may include a third plate 104, the top end of which is connected to the bottom end of the second plate 103, and the bottom end of the third plate is a free end.

[0153] The above arrangement causes the baffle 10 formed by the first plate 102, the second plate 103 and the third plate connected from top to bottom to have a tendency to tilt downwards toward the side wall away from the electrical control box 5, which can better guide the airflow after passing through the heat dissipation fins 561 to flow in a specific direction and improve heat dissipation efficiency.

[0154] In this embodiment, by designing the baffle 10 as a series of connected plates, it can better adapt to different structural and spatial requirements, improve the versatility and flexibility of the baffle 10, and also facilitate the guidance and circulation of air.

[0155] Referring to Figure 13, the third plate 104 forms an acute angle α with the plane perpendicular to the axis of the outdoor fan, where α ≥ 10°.

[0156] In this embodiment, the third body forms an acute angle of not less than 10° with the plane perpendicular to the axis of the outdoor fan, which helps to guide the airflow direction, allowing the air to pass through the heat dissipation duct 202 more smoothly, reducing airflow resistance and improving heat dissipation efficiency.

[0157] The acute angle α cannot be too small. If it is too small, the third body will tend to be horizontal, causing greater resistance and turbulence when the cooling airflow passes through the heat dissipation fins 561 and then through the third plate 104. This will affect the heat dissipation effect and make it impossible to guide the airflow direction. To improve the heat dissipation effect, the acute angle α is set to be no less than the second parameter value, which can be any value between 10° and 20°.

[0158] When designing, consider selecting a suitable parameter. For example, a second parameter value of 10° can effectively prevent the problem of insufficient change in airflow direction due to an angle that is too small, thus improving heat dissipation.

[0159] In some embodiments of this application, the second plate 103 extends along the axial direction of the outdoor fan, and the horizontal distance between the second plate 103 and the outdoor fan is L. L≥15mm.

[0160] The horizontal distance L cannot be too small; otherwise, a safe distance cannot be guaranteed between the second plate 103 and the outdoor fan 3, affecting the operation of the outdoor fan. To ensure a sufficient safe distance between the second plate 103 and the outdoor fan, the horizontal distance L is set to be no less than the third parameter value, which can be any value between 15mm and 25mm. A suitable specific parameter should be selected during the design process. For example, the third parameter value could be 15mm.

[0161] In this embodiment, the second plate 103 is configured to extend vertically, and the distance L is reasonably set to ensure sufficient distance between the second plate 103 and the outdoor fan, so as to avoid interference or collision with the second plate 103 when the outdoor fan rotates, and at the same time provide sufficient space for the flow of heat dissipation air to ensure the smooth flow of heat dissipation air duct 202.

[0162] Referring again to Figure 13, in some embodiments, an air outlet duct 105 is defined between the baffle 10 and the electrical control box 5, and the air outlet duct 105 has a trend of being wide at the bottom and narrow at the top.

[0163] In this embodiment, the cooling airflow exiting the heat dissipation fins 561 is hot airflow, which tends to rise. By setting the air outlet duct 105 to be wide at the bottom and narrow at the top, the airflow can gradually accelerate after entering the air outlet duct 105, increasing the wind speed and thus more effectively and quickly carrying away the heat around the air-cooled radiator 56 and expelling it to the external environment. At the same time, the above arrangement makes the baffle 10 tend to tilt downwards, avoiding the accumulation of dust and impurities on the baffle 10.

[0164] In some embodiments of this application, referring to FIG14, the electrical control box 5 may include a support plate 53. The support plate 53 is connected to the housing 1 and serves to separate the receiving cavity 58 from the mounting cavity 17.

[0165] By connecting the support plate 53 to the housing 1, the receiving cavity 58 and the mounting cavity 17 can be effectively separated to form two relatively independent spaces, which can be used to separate the electrical control area and the heat exchange area, and avoid mutual interference between electrical control components and other components.

[0166] The support plate 53 is a sheet metal part. Using sheet metal as the support plate 53 provides high strength and rigidity, enabling it to provide a stable and reliable support structure for the electrical control box 5, ensuring the stability of the electrical control box 5 during installation and use.

[0167] The electrical control box 5 may include a base plate 51, which is disposed on the side of the support plate 53 away from the mounting cavity 17, and is used to form the bottom wall of the receiving cavity 58.

[0168] The base plate 51 provides a stable bottom wall structure for the receiving cavity 58, enhancing the overall structural strength of the receiving cavity 58.

[0169] The electrical control box 5 may include a through section 531, which is formed on the support plate 53 for the heat dissipation fins 561 to pass through.

[0170] By providing the through section 531, the heat dissipation fins 561 can pass through the support plate 53 from the receiving cavity 58 and enter the mounting cavity 17, which provides conditions for the formation of the heat dissipation air duct 202 and for the use of an outdoor fan to dissipate heat from the air-cooled radiator 56.

[0171] Referring to Figure 15, the through section 531 is located above the heat dissipation air inlet section 57. The heat dissipation air duct 202 is configured such that air enters from the bottom heat dissipation air inlet section 57, flows upward through the heat dissipation fins 561, and then flows out through the ventilation louvers 101, forming a reasonable and efficient heat dissipation circulation path, which is beneficial to improving the heat dissipation efficiency of the electrical control box 5.

[0172] The electrical control box 5 may include a box body 54, which is mounted on a support plate 53 for mounting the electrical control board 52. The box body 54 is made of plastic.

[0173] Using plastic parts as the housing 54 has advantages such as light weight, low cost, and good insulation performance, and facilitates the installation and fixing of the electrical control board 52.

[0174] The electrical control box 5 may include a cover 55, which is connected to a support plate 53 and a base plate 51. The cover 55, the support plate 53, and the base plate 51 together form a receiving cavity 58 with an open top, and a heat dissipation air inlet 57 is provided on the support plate 53 and located below the base plate 51.

[0175] In this embodiment, the enclosure of the cover 55, the support plate 53 and the bottom plate 51 forms a receiving cavity 58 with an open top, providing reasonable space for the arrangement of the electronic control board 52 and the box 54.

[0176] Meanwhile, the heat dissipation air intake 57 is located below the base plate 51, which not only facilitates air to enter the heat dissipation air duct 202 from the bottom and form a good heat dissipation circulation, but also prevents rainwater and dust from entering the mounting cavity 17 through the heat dissipation air intake 57 to a certain extent.

[0177] In some embodiments, the cover 55 is connected to the top cover 13 by fasteners. On the one hand, the top cover 13 constrains the cover 55, increasing the firmness of the connection of the control box 5. On the other hand, the top cover 13 can seal the opening at the top of the receiving cavity 58, preventing foreign objects such as dust and rainwater from entering the receiving cavity 58, thereby further improving the sealing and protection performance of the control box 5.

[0178] The electrical control box 5 contains a terminal block, which connects to the electrical control board 52. A terminal block, also known as a wiring terminal or wiring strip, is an electrical component used to connect and arrange wires and cables. Its main function is to connect multiple wires to a single terminal, enabling circuit connection and power distribution. Terminal blocks typically consist of rails with multiple metal terminals and screws. These screws clamp the wires, ensuring smooth current transmission through the terminal block. This is common knowledge in the field and will not be elaborated further.

[0179] It should be noted that the terminal block also generates heat when it is in operation. The heat inside the electrical control box 5 includes the heat generated by the electrical components on the electrical control board 52, as well as the heat generated by the terminals when they are in operation.

[0180] The terminal block is positioned close to the ventilation inlet 512 so that the heat generated during operation of the terminal block can be dissipated in a timely manner.

[0181] The terminal block is located below the electrical control board 52, which not only facilitates wiring connections, but also saves the horizontal space occupied by the terminal block and the electrical control board 52, making it convenient for the terminal block and the electrical control board 52 to be arranged inside the electrical control box 5.

[0182] As shown in Figure 16, the electrical control box 5 includes a mounting plate 59 for placing terminal blocks. Since the terminal blocks are located below the electrical control board 52, the mounting plate 59 is also located below the electrical control board 52. The mounting plate 59 is positioned close to the base plate 51, and there is a certain distance between the mounting plate 59 and the base plate 51 along the height direction of the housing 100 to prevent the mounting plate 59 from obstructing the ventilation inlet 512 and blocking the air entering the receiving cavity 58 from the ventilation inlet 512.

[0183] It should be noted that since the terminal block is located close to the ventilation inlet 512, water droplets splashed back into the receiving cavity 58 from the ventilation inlet 512 can easily affect the normal operation of the terminal block. By installing the terminal block with the mounting plate 59, the mounting plate 59 can block the water droplets and prevent the water droplets splashed back into the receiving cavity 58 from the ventilation inlet 512 from contacting the terminal block.

[0184] The mounting plate 59 and the base plate 51 together define a connecting ventilation channel, through which air flows in the receiving cavity 58 via the ventilation inlet 512.

[0185] Terminal blocks are typically placed horizontally to reduce wire bending and ensure the stability and safety of the connecting cables. However, horizontal placement increases the space occupied by the terminal block in the horizontal direction, while vertical placement may require operators to stand or bend over during wiring, which can increase the difficulty and inconvenience of wiring. Moreover, if vertically placed terminal blocks are not securely fixed or are subjected to external forces, they may sway or tilt. This may not only affect the stability of the wiring but also pose a potential threat to the overall safety of the outdoor unit of the air conditioner.

[0186] Based on this, the mounting plate 59 is defined with a placement surface, which is a sloped surface that is inclined downward in the horizontal direction away from the support plate 53, so that the terminal block is placed at an angle in the receiving cavity 58. This not only facilitates the wire connection operation, but also reduces the space occupied by the terminal block in the horizontal direction in the receiving cavity 58.

[0187] Furthermore, to improve the heat dissipation efficiency of the control board 52, the control box 5 is provided with a ventilation inlet 512, which is connected to the receiving cavity 58, allowing outdoor air to enter the receiving cavity 58 through the ventilation inlet 512. The control box 5 is also provided with a ventilation outlet 532, allowing air in the receiving cavity 58 to exit the receiving cavity 58 through the ventilation outlet 532.

[0188] The outdoor fan 3 operates, drawing outdoor air into the housing cavity 58 through the ventilation inlet 512. After the air comes into contact with the electronic control board 52 and exchanges heat, it exits the housing cavity 58 through the ventilation outlet 532. The air carries away the heat generated by the operation of the electronic control board 52, thereby dissipating heat from the electronic control board 52.

[0189] It should be noted that the air temperature after passing through the electronic control board 52 is usually higher than the air temperature before passing through the electronic control board 52. Since hot air has a low density, according to air thermodynamics, setting the ventilation inlet 512 lower than the ventilation outlet 532 can allow for better airflow.

[0190] In order to increase the airflow speed in the housing cavity 58 and increase the heat dissipation effect of the air on the electrical control box 5, the ventilation outlet 532 is connected to the mounting cavity 17 so that the air in the housing cavity 58 can flow faster with the help of the outdoor fan 3.

[0191] Since the electrical control box 5 is located outside the mounting cavity 17, rainwater or dust may enter the housing cavity 58 through the ventilation inlet 512 and / or ventilation outlet 532, affecting the normal operation of the electrical control board 52 and / or terminal block.

[0192] Based on this, as shown in Figures 15 and 16, the ventilation inlet 512 is provided on the base plate 51, with the opening of the ventilation inlet 512 facing downwards, so as to prevent dust or water droplets from entering the receiving cavity 58 through the ventilation inlet 512.

[0193] As shown in Figures 15 and 16, the ventilation outlet 532 is provided on the support plate 53. The ventilation outlet 532 is located near the top of the support plate 53 to prevent dust or water droplets from entering the receiving cavity 58 through the ventilation outlet 532.

[0194] In some embodiments, referring to Figures 17 to 20, a heating module 521 is provided on the electronic control board 52, and a fan-cooled heat sink 56 is in contact with the heating module. The heat of the heating module 521 is transferred to the fan-cooled heat sink 56 by heat transfer, and the heat of the heating module is dissipated by the fan-cooled heat sink 56.

[0195] The heating module has pins that are soldered to the control board 52. The heating module 521 is located away from other modules and is the module that is most prone to overheating when the control board 52 is working. The heating module 521 can be all or part of the compressor's IPM module, IGBT switching transistor, PFC diode FRD, rectifier bridge, and outdoor fan's IPM module.

[0196] The housing 54 has a partial opening 541 through which the heating module 521 passes. In this embodiment, a fan-cooled heat sink 56 is connected to the side of the opening 541 of the housing 54 so that the fan-cooled heat sink 56 abuts against the heating module 521.

[0197] Furthermore, the heating module 521 is mounted on the electronic control board 52 via the support bracket 542. The air-cooled heat sink 56 and the support bracket 542 are fixedly connected, thereby clamping the heating module 521 between the support bracket 542 and the air-cooled heat sink 56, eliminating the need to fix the heating module 521 separately and improving the efficiency of disassembly and assembly.

[0198] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

[0199] For ease of explanation, the above description has been provided in conjunction with specific embodiments. However, the above exemplary discussion is not intended to be exhaustive or to limit the embodiments to the specific forms disclosed above. Various modifications and variations can be obtained based on the above teachings. The selection and description of the above embodiments are for the purpose of better explaining the principles and practical applications, thereby enabling those skilled in the art to better utilize the described embodiments and various different variations of embodiments suitable for specific use considerations.

Claims

1. A top-discharge outdoor unit for an air conditioner, characterized in that, include: A housing, which defines an installation cavity, includes an outdoor air outlet and an outdoor air inlet communicating with the installation cavity. The outdoor air outlet is located at the top of the housing, and the outdoor air inlet is located on the side wall of the housing. An outdoor fan is located in the installation cavity and near the outdoor air outlet, and the axis of the outdoor fan extends along the height direction of the housing. An outdoor heat exchanger is located inside the mounting cavity, and the outdoor heat exchanger is positioned close to the outdoor air inlet. A compressor is disposed within the mounting cavity, and the compressor is located below the outdoor fan; An electrical control box is connected to the housing and located outside the mounting cavity. The electrical control box defines a receiving cavity and has a heat dissipation air inlet that connects the mounting cavity to the external environment. An electronic control board is disposed within the receiving cavity; a wind-cooled radiator is installed on the side of the electronic control board facing the mounting cavity, and the heat dissipation fins of the wind-cooled radiator extend through the electronic control box into the mounting cavity; An air guide is disposed in the mounting cavity and connected to the electrical control box to cover at least part of the heat dissipation fins and the heat dissipation air inlet. The top of the air guide is provided with a heat dissipation air outlet communicating with the mounting cavity. A baffle is disposed above the air-cooled radiator and its top end is connected to the electrical control box. The projection of the baffle downward along the height direction of the housing covers the heat dissipation fins. The bottom end of the baffle is not higher than the height of the blade tip of the outdoor fan.

2. The top-discharge outdoor unit of an air conditioner according to claim 1, characterized in that, The baffle is equipped with several ventilation louvers.

3. The top-discharge outdoor unit of an air conditioner according to claim 2, characterized in that, The projection of the ventilation louvers onto the electrical control box extends along the height direction of the housing.

4. The top-discharge outdoor unit of an air conditioner according to claim 1, characterized in that, Along the axial direction of the outdoor fan, the distance between the bottom end of the baffle and the tip of the outdoor fan blades is m, where m < 40 mm.

5. The top-discharge outdoor unit of an air conditioner according to claim 1, characterized in that, Along the axial direction of the outdoor fan, the distance between the bottom end of the baffle and the tip of the outdoor fan blades is m, where m satisfies: m≥40mm, m≤60mm.

6. The top-discharge outdoor unit of an air conditioner according to claim 1 or 2, characterized in that, The baffle includes a first plate, a second plate, and a third plate connected sequentially from top to bottom. The end of the first plate away from the second plate is connected to the side wall of the electrical control box. The third plate forms an acute angle α with a plane perpendicular to the axis of the outdoor fan, where α ≥ 10°.

7. The top-discharge outdoor unit of an air conditioner according to claim 6, characterized in that, The second plate extends along the axial direction of the outdoor fan. Ventilation louvers are provided on the side of the first plate and the second plate near the outdoor fan. The horizontal distance between the ventilation louvers on the second plate and the outdoor fan is L, where L≥15mm.

8. The top-discharge outdoor unit of an air conditioner according to claim 1 or 2, characterized in that, The baffle and the electrical control box define an air outlet duct, which is wider at the bottom and narrower at the top.

9. The top-discharge outdoor unit of an air conditioner according to claim 1, characterized in that, The electrical control box includes: a support plate connected to the housing to separate the receiving cavity from the mounting cavity; a bottom plate disposed on the side of the support plate away from the mounting cavity to form the bottom wall of the receiving cavity; a through portion formed on the support plate and located above the heat dissipation air inlet to allow the heat dissipation fins to pass through; a box body mounted on the support plate to mount the electrical control board; and a cover connected to the support plate and the bottom plate to enclose and form the receiving cavity with an open top, wherein the heat dissipation air inlet is formed on the support plate and located below the bottom plate.

10. A top-discharge outdoor unit for an air conditioner, characterized in that, include: A housing, which defines an installation cavity, includes an outdoor air outlet and an outdoor air inlet communicating with the installation cavity. The outdoor air outlet is located at the top of the housing, and the outdoor air inlet is located on the side wall of the housing. An outdoor fan is located in the installation cavity and near the outdoor air outlet, and the axis of the outdoor fan extends along the height direction of the housing. An outdoor heat exchanger is located inside the mounting cavity, and the outdoor heat exchanger is positioned close to the outdoor air inlet. A compressor is disposed within the mounting cavity, and the compressor is located below the outdoor fan; An electrical control box is connected to the housing and located outside the mounting cavity, and the electrical control box defines a receiving cavity; an electrical control board is disposed within the receiving cavity; a wind-cooled radiator is installed on the side of the electrical control board facing the mounting cavity, and the heat dissipation fins of the wind-cooled radiator extend into the mounting cavity; an air guide is connected to the electrical control box to form a heat dissipation duct, at least part of the heat dissipation fins are located in the heat dissipation duct, the bottom of the heat dissipation duct is connected to the outdoor environment, and the top of the heat dissipation duct is provided with a heat dissipation outlet, whereby air from the external environment enters the heat dissipation duct, carries away the heat from the wind-cooled radiator, and then flows into the mounting cavity through the heat dissipation outlet; a baffle is disposed above the wind-cooled radiator, the bottom end of the baffle is close to the outdoor fan relative to the top end of the baffle, the projection of the baffle downward along the height direction of the housing covers the heat dissipation fins, and the height of the bottom end of the baffle is not higher than the height of the blade tip of the outdoor fan.

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