Ejection air outdoor unit and air conditioner having the same

Abstract

The application provides a top air outlet outdoor unit and an air conditioner with the same, and relates to the technical field of air conditioning equipment. The application is designed to solve the problem of poor heat dissipation condition in the electric control box of the existing top air outlet outdoor unit. The top air outlet outdoor unit comprises a side plate for forming a shell, an electric appliance cover plate fixedly connected to the side plate, and an electric control box mounted on the side plate. The electric appliance cover plate and the side plate form a containing cavity therebetween, the electric control box is located in the containing cavity, and a sandwiched space is formed between the electric control box and the electric appliance cover plate. The electric control box is provided with an air inlet and a heat dissipation opening. The air inlet is communicated with an air duct of the top air outlet outdoor unit and an inner cavity of the electric control box, and the heat dissipation opening is communicated with the inner cavity and the sandwiched space. The side plate is provided with an air outlet, the air outlet is communicated with the sandwiched space and the air duct, the air outlet is arranged close to an impeller in the air duct, and the air inlet is arranged away from the impeller. The air conditioner comprises the above top air outlet outdoor unit. The application makes the heat dissipation condition in the electric control box better.

Description

Technical Field

[0001] This invention relates to the field of air conditioning equipment technology, and more specifically, to a top-discharge outdoor unit and an air conditioner having thereon. Background Technology

[0002] Typically, the electrical control box of a top-discharge outdoor unit adopts a sealed structure design. This results in poor heat dissipation conditions inside the electrical control box during operation. Under extreme conditions, the temperature of the electrical components inside the control box may exceed the safe value, causing the electrical components to overheat and triggering a shutdown protection. In severe cases, electrical components may burn out or explode, posing a significant safety hazard. Summary of the Invention

[0003] The first objective of this invention is to provide a top-discharge outdoor unit to solve the technical problem of poor heat dissipation conditions inside the electrical control box of existing top-discharge outdoor units.

[0004] The present invention provides a top-discharge outdoor unit, comprising a side plate for forming a housing, an electrical cover plate fixedly connected to the side plate, and an electrical control box installed on the side plate. A receiving cavity is formed between the electrical cover plate and the side plate, the electrical control box is located within the receiving cavity, and a sandwich space is formed between the electrical control box and the electrical cover plate. The electrical control box has an air inlet and a heat dissipation outlet. The air inlet connects to the air duct of the top-discharge outdoor unit and the inner cavity of the electrical control box, and the heat dissipation outlet connects to the inner cavity and the sandwich space. The side plate has an air outlet, which connects to the sandwich space and the air duct. The air outlet is positioned close to the fan blades within the air duct, and the air inlet is positioned away from the fan blades.

[0005] During operation, the fan blades inside the duct rotate, driving the airflow within the duct to the outside of the unit casing. During this process, the pressure within the duct decreases, especially at the location of the fan blades, where the pressure is lowest. This causes the airflow in the interlayer space to be discharged through the outlet into the duct, and then exited through the top opening of the top-discharge outdoor unit. After the airflow in the interlayer space is discharged, the pressure in the interlayer space also decreases; that is, the pressure in the interlayer space is lower than the pressure inside the electrical control box. This causes the airflow inside the electrical control box to be discharged into the interlayer space through the heat dissipation vent. Because the airflow inside the electrical control box is discharged into the interlayer space, the pressure inside the electrical control box decreases, allowing the cool airflow from the lower part of the duct to enter the electrical control box's interior through the inlet, thus dissipating heat from the electrical control box's interior.

[0006] As shown in the above analysis, during operation, the airflow path of the top-discharge outdoor unit is as follows: lower part of the duct → air inlet → inner cavity of the electrical control box → heat dissipation vent → interlayer space → air outlet → upper part of the duct. Then, under the action of the fan blades, the airflow within the duct is discharged to the outside through the top opening of the top-discharge outdoor unit. This process allows the cool air in the duct to enter the inner cavity of the electrical control box, and with the flow of the air, it carries away the heat from the inner cavity, achieving heat dissipation of the inner cavity environment. This effectively enhances the heat dissipation effect of the electrical control box and improves its heat dissipation conditions.

[0007] Furthermore, the interlayer space allows for further cooling of the control box walls as the gas flows towards the outlet, carrying away heat and thus dissipating heat from the box's interior. Simultaneously, the interlayer space also temporarily stores airflow, using this stored airflow to continuously cool the control box walls, ensuring effective heat dissipation. Moreover, in high-temperature environments, the interlayer space, along with this stored airflow, also provides insulation, preventing ambient heat from directly transferring to the control box's interior through the electrical cover. This achieves both active and passive heat dissipation for the control box, further improving its heat dissipation conditions.

[0008] Furthermore, the heat dissipation vent is provided with louvered slats that extend downwards relative to the direction from the inner cavity of the electrical control box to the interlayer space. This design effectively blocks condensation dripping from the outside of the electrical control box, preventing it from entering the inner cavity of the electrical control box and causing short circuits or corrosion to the electrical components, thus providing a certain degree of protection for the electrical components.

[0009] Furthermore, the heat dissipation vent is located above the high-temperature components in the inner cavity, and / or the air outlet is located above the heat dissipation vent. This arrangement effectively utilizes the principle of hot air rising, allowing the hot air inside the control box to be smoothly discharged into the interlayer space, and the hot air in the interlayer space to be smoothly discharged into the air outlet, thereby enhancing the gas flow circulation for cooling the control box.

[0010] Furthermore, a water-blocking component is provided inside the air duct, opposite to the air outlet. The water-blocking component is configured to prevent water droplets from the air duct from entering the interlayer space through the air outlet. This configuration effectively blocks water droplets in the air duct, preventing them from splashing into the interlayer space through the air outlet and adversely affecting the electrical control box.

[0011] Furthermore, the height of the water-blocking component is no less than 5mm. This design avoids water-blocking failure due to the water-blocking component being too low, thus ensuring the water-blocking effect.

[0012] Furthermore, the top cover of the top-discharge outdoor unit has a protruding edge extending towards the air duct, which forms the water-blocking component. This design not only simplifies the structure but also allows for automatic installation of the water-blocking component within the air duct after the top cover is assembled into the housing, making assembly convenient.

[0013] Furthermore, the number of air inlets is multiple, and / or the number of heat dissipation vents is multiple, and / or the number of air outlets is multiple. This arrangement ensures sufficient airflow at the air inlets, airflow at the heat dissipation vents, and airflow at the air outlets, thereby further enhancing gas circulation.

[0014] Furthermore, the air inlet is located at the bottom of the electrical control box. This arrangement prevents condensate in the air duct from splashing into the inner cavity of the electrical control box, thus providing some protection for the electrical components inside the box.

[0015] Furthermore, the air inlet is located below and substantially opposite the high-temperature components within the inner cavity. This arrangement ensures that the cool airflow from the lower part of the air duct, upon entering the inner cavity of the control box through the air inlet, can immediately cool the high-temperature components, reducing heat loss during gas flow and guaranteeing the effectiveness and timeliness of heat dissipation for the high-temperature components.

[0016] Furthermore, the air inlet has a channel structure with a length of 'a' and a width of 'b', where 10mm ≤ a ≤ 20mm and b ≥ 10mm. By setting the air inlet to a channel structure of a certain length, airflow can be guided, allowing it to flow smoothly into the inner cavity of the electrical control box. Simultaneously, setting the width of the air inlet to not less than 10mm not only increases the air volume but also ensures smooth airflow.

[0017] The second objective of this invention is to provide an air conditioner that solves the technical problem of poor heat dissipation inside the electrical control box of existing top-discharge outdoor units.

[0018] The air conditioner provided by the present invention includes an indoor unit and the aforementioned top-discharge outdoor unit.

[0019] By installing the aforementioned top-discharge outdoor unit in the air conditioner, the air conditioner accordingly possesses all the advantages of the aforementioned top-discharge outdoor unit, which will not be elaborated upon here. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the structure of the top-discharge outdoor unit provided in an embodiment of the present invention;

[0022] Figure 2 This is one of the structural schematic diagrams of the top-discharge outdoor unit after the electrical cover has been removed, according to an embodiment of the present invention;

[0023] Figure 3 This is a schematic diagram of the internal structure of the top-discharge outdoor unit provided in an embodiment of the present invention;

[0024] Figure 4 This is a second schematic diagram of the structure of the top-discharge outdoor unit after the electrical cover has been removed, according to an embodiment of the present invention. In the diagram, the arrows indicate the flow path of the gas used to dissipate heat from the electrical control box.

[0025] Figure 5 This is a schematic diagram of the electrical control box of the top-discharge outdoor unit provided in an embodiment of the present invention;

[0026] Figure 6 for Figure 5 Enlarged view of the local structure at point A;

[0027] Figure 7 for Figure 5 Enlarged view of the local structure at point B;

[0028] Figure 8 This is the third schematic diagram of the structure of the top-discharge outdoor unit after the electrical cover has been removed, as provided in this embodiment of the invention.

[0029] Figure 9 for Figure 8 Enlarged view of the local structure at point C.

[0030] Explanation of reference numerals in the attached figures:

[0031] 100 - Housing; 200 - Electrical cover; 300 - Electrical control box;

[0032] 110-Side panel; 111-Air outlet; 120-Air duct; 130-Fan blade; 140-Top cover; 150-Water baffle; 160-Chassis;

[0033] 310 - Air inlet; 320 - Heat dissipation vent; 330 - Window louver; 340 - High-temperature components; 350 - Heat sink. Detailed Implementation

[0034] To address the poor heat dissipation within the electrical control box of top-discharge outdoor units, the commonly used industry solution involves winding the cold pipes of the outdoor heat exchanger inside the electrical control box. During unit operation, the low temperature of the cold pipes helps cool the interior of the control box, thus improving heat dissipation. While this solution effectively cools the control box, its complex structure and low assembly efficiency significantly increase cooling costs.

[0035] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0036] Figure 1 This is a schematic diagram of the structure of the top-discharge outdoor unit provided in this embodiment. Figure 2 This is one of the structural diagrams of the top-discharge outdoor unit after the electrical cover 200 has been removed, as provided in this embodiment. Figure 3 This is a schematic diagram of the internal structure of the top-discharge outdoor unit provided in this embodiment. Figures 1 to 3 As shown, this embodiment provides a top-discharge outdoor unit, including a side plate 110 for forming a housing 100, an electrical cover 200 fixedly connected to the side plate 110, and an electrical control box 300 installed on the side plate 110. Specifically, an accommodating cavity is formed between the electrical cover 200 and the side plate 110, the electrical control box 300 is located in the accommodating cavity, and an interlayer space is formed between the electrical control box 300 and the electrical cover 200.

[0037] Figure 4 This is the second structural diagram of the top-discharge outdoor unit after the electrical cover 200 has been removed, as provided in this embodiment (the arrows in the diagram indicate the flow path of the gas used for heat dissipation of the electrical control box 300). Please continue to refer to... Figures 1 to 3 and combined Figure 4 The electrical control box 300 has an air inlet 310 and a heat dissipation vent 320. The air inlet 310 is connected to the air duct 120 of the top-outlet outdoor unit and the inner cavity of the electrical control box 300. The heat dissipation vent 320 is connected to the inner cavity and the interlayer space. The side panel 110 has an air outlet 111. The air outlet 111 is connected to the interlayer space and the air duct 120. The air outlet 111 is located close to the fan blade 130 in the air duct 120, and the air inlet 310 is located away from the fan blade 130.

[0038] During operation, the fan blades 130 located in the air duct 120 rotate, driving the airflow in the air duct 120 to the outside of the casing 100. During the above process, the pressure inside the air duct 120 decreases, especially the pressure is lowest at the part of the air duct 120 where the fan blades 130 are installed. This causes the airflow in the interlayer space to be discharged into the air duct 120 through the air outlet 111, and then discharged from the top opening of the top-mounted outdoor unit. After the airflow in the interlayer space is discharged, the pressure in the interlayer space also decreases, that is, the pressure in the interlayer space is less than the pressure in the inner cavity of the electrical control box 300. This causes the airflow in the inner cavity of the electrical control box 300 to be discharged into the interlayer space through the heat dissipation port 320. Because the airflow in the inner cavity of the electrical control box 300 is discharged into the interlayer space, the pressure in the inner cavity of the electrical control box 300 decreases. This allows the cold airflow at the bottom of the air duct 120 to enter the inner cavity of the electrical control box 300 through the air inlet 310, thereby achieving heat dissipation for the inner cavity of the electrical control box 300.

[0039] As can be seen from the above analysis, the gas flow path during the operation of the top-discharge outdoor unit is as follows: lower part of duct 120 → air inlet 310 → inner cavity of electrical control box 300 → heat dissipation vent 320 → interlayer space → air outlet 111 → upper part of duct 120 (see details). Figure 4 (As shown by the middle arrow), then, under the action of the fan blades 130, the airflow in the duct 120 is discharged to the outside through the top opening of the exhaust fan. This process allows the cold air in the duct 120 to enter the inner cavity of the control box 300. With the flow of the air, the heat in the inner cavity is carried away, achieving heat dissipation treatment of the inner cavity environment, effectively enhancing the heat dissipation effect of the inner cavity of the control box 300, and improving the heat dissipation conditions of the control box 300.

[0040] Furthermore, the interlayer space allows for further cooling of the control box 300's walls as the gas flows towards the air outlet 111. By carrying away heat from the walls, it further dissipates heat from the control box 300's interior. Simultaneously, the interlayer space also temporarily stores airflow, using this stored airflow to continuously cool the control box 300's walls, ensuring effective heat dissipation. Moreover, in high-temperature environments, the interlayer space, along with this stored airflow, also provides insulation, preventing ambient heat from being directly transferred to the control box 300's interior through the electrical cover 200. This achieves both active and passive heat dissipation for the control box 300, further improving its heat dissipation conditions.

[0041] It should be noted that in this embodiment, "the air outlet 111 is positioned close to the fan blade 130 within the air duct 120, while the air inlet 310 is positioned far from the fan blade 130." Here, "far" and "close" refer to relative proximity; that is, the air outlet 111 is positioned closer to the fan blade 130 than the air inlet 310. This arrangement facilitates the formation of a pressure difference at the air outlet 111, thereby ensuring the smooth flow of gas along the aforementioned flow path.

[0042] It should also be noted that during the operation of the top-discharge outdoor unit, the internal temperature of the electrical control box 300 is usually above 80°C. Through the aforementioned improvements, this invention can reduce the internal temperature of the electrical control box 300 by 20-25°C, effectively improving its heat dissipation. Specifically, the airflow flows from the duct 120 into the internal cavity of the electrical control box 300 and then into the interlayer space. Although the airflow entering the interlayer space has already completed heat exchange with the internal cavity of the electrical control box 300, the temperature of this airflow is still lower than the internal temperature of the electrical control box 300. Therefore, during its further flow within the interlayer space, it can further dissipate heat from the internal cavity of the electrical control box 300.

[0043] In this embodiment, the components used to form the housing 100 also include the chassis 160, etc. Since the present invention does not improve this, it will not be described in detail.

[0044] Please continue to refer to Figure 3 In this embodiment, the electrical control box 300 may include a heat sink 350, which faces and is located within the air duct 120. Part of the heat generated during the operation of the electrical components within the electrical control box 300 can be discharged through the heat sink 350 to the air duct 120, and finally exhausted through the top opening of the top-mounted outdoor unit. The heat sink 350 enhances the heat dissipation effect of the electrical control box 300, ensuring the reliability of its heat dissipation.

[0045] Please continue to refer to Figure 4 In this embodiment, the electrical control box 300 includes a box body and a box cover fixedly connected to the box body. The box body of the electrical control box 300 faces the air duct 120, and the "box wall" is formed by the box cover. The air inlet 310 is opened in the box body, and the heat dissipation vent 320 is opened in the box cover. A controller is provided inside the electrical control box 300.

[0046] Figure 5 This is a schematic diagram of the electrical control box 300 of the top-discharge outdoor unit provided in this embodiment. Figure 6 for Figure 5 Enlarged view of the local structure at point A in the middle.

[0047] Please continue to refer to Figure 2 and combined Figure 5 and Figure 6In this embodiment, the heat dissipation vent 320 is provided with a louvered slat 330, wherein the louver 330 extends downward at an angle relative to the direction from the inner cavity of the electrical control box 300 to the interlayer space.

[0048] By setting the louvered slats 330 in the heat dissipation vent 320, the condensate dripping from the outside of the electrical control box 300 can be effectively blocked, preventing it from dripping into the inner cavity of the electrical control box 300 and causing short circuits and corrosion of electrical components. This provides a certain degree of protection for the electrical components and extends the working life of the electrical control box 300.

[0049] Please continue to refer to Figure 5 In this embodiment, there are two heat dissipation vents 320, which are arranged separately. This arrangement increases the airflow at the heat dissipation vents 320, allowing the heat-exchanged airflow in the inner cavity of the electrical control box 300 to be smoothly discharged into the interlayer space, ensuring smooth gas flow.

[0050] Please continue to refer to Figure 4 In this embodiment, the air outlet 111 is located above the heat dissipation vent 320. This arrangement effectively utilizes the principle of hot air rising to guide the heat exchanged airflow discharged from the heat dissipation vent 320 to the air outlet 111, allowing the airflow inside the electrical control box 300 to flow smoothly into the interlayer space and then be discharged from the air outlet 111, thereby enhancing the gas flow circulation used for heat dissipation of the electrical control box 300.

[0051] Please continue to refer to Figure 5 In this embodiment, the heat dissipation vent 320 is located above the high-temperature component 340 inside the electrical control box 300. Similarly, this arrangement can effectively utilize the principle of hot air rising to guide the hot airflow that has completed the heat dissipation of the high-temperature component 340 to the heat dissipation vent 320, and then smoothly discharge it into the interlayer space, so that the subsequent cold airflow can smoothly enter the inner cavity of the electrical control box 300 from the lower part of the air duct 120, further enhancing the gas flow circulation used to dissipate heat for the electrical control box 300.

[0052] It should be noted that "high temperature component 340" refers to the electrical component whose internal cavity of the control box 300 is at a high operating temperature during the operation of the top-outlet outdoor unit, and the heat generated by its operation has a significant impact on the temperature of the internal cavity of the control box 300.

[0053] Please continue to refer to Figure 5 In this embodiment, the air inlet 310 is located at the bottom of the electrical control box 300, that is, the air inlet 310 is located at the bottom of the box.

[0054] This design prevents condensate in the duct 120 from splashing from the air inlet 310 into the inner cavity of the electrical control box 300, thus providing some protection for the electrical components inside the electrical control box 300.

[0055] Please continue to refer to Figure 5 In this embodiment, the air inlet 310 is located below the high-temperature component 340 inside the electrical control box 300 and is basically opposite to the high-temperature component 340.

[0056] This arrangement, which places the high-temperature component 340 downstream of the gas flow path, allows the cold airflow at the bottom of the air duct 120 to enter the inner cavity of the control box 300 from the air inlet 310 and immediately cool the high-temperature component 340. This targeted heat dissipation reduces the loss of cooling energy during gas flow, ensuring the effectiveness and timeliness of heat dissipation for the high-temperature component 340 and further improving the heat dissipation conditions inside the control box 300.

[0057] It should be noted that the above "basically relative" refers to the fact that, along the flow path of airflow from the air inlet 310 to the inner cavity of the electrical control box 300, the air inlet 310 and the high-temperature component 340 at least partially overlap.

[0058] Figure 7 for Figure 5 A magnified view of the local structure at point B. (See image below.) Figure 7 As shown, in this embodiment, the air inlet 310 has a channel structure. Specifically, the length of the channel structure is a, the width is b, 10mm≤a≤20mm, and b≥10mm.

[0059] By designing the air inlet 310 as a channel structure of a certain length, airflow can be guided, allowing it to flow smoothly into the inner cavity of the electrical control box 300. Simultaneously, setting the width of the air inlet 310 to be no less than 10mm not only increases the air intake volume but also ensures smooth airflow.

[0060] In this embodiment, there is one air inlet 310. In other embodiments, there can be multiple air inlets 310, which are arranged in a dispersed manner. By setting multiple air inlets 310, the air intake volume can be further increased.

[0061] Figure 8 This is the third schematic diagram of the structure of the top-discharge outdoor unit after removing the electrical cover 200, as provided in this embodiment. Figure 9 for Figure 8 A magnified view of the local structure at point C. (See image below.) Figure 8 and Figure 9 As shown, in this embodiment, there are multiple air outlets 111, which are distributed in a dispersed manner. This arrangement increases the air volume and ensures smooth airflow.

[0062] Please continue to refer to Figure 9 In this embodiment, a water-blocking component 150 is provided inside the air duct 120. The water-blocking component 150 is opposite to the air outlet 111. The water-blocking component 150 is configured to prevent water droplets from the air duct 120 from entering the interlayer space through the air outlet 111.

[0063] By setting up the water-blocking component 150, water droplets in the air duct 120 can be effectively blocked, preventing them from splashing into the interlayer space through the air outlet 111 and causing adverse effects on the electrical control box 300.

[0064] Preferably, the height of the water-blocking component 150 is not less than 5mm. This setting can avoid the situation where the water-blocking component 150 is too low and fail to block water, thus ensuring the water-blocking effect.

[0065] Please continue to refer to Figure 9 In this embodiment, specifically, the top cover 140 of the top-mounted air unit has a protruding edge extending toward the air duct 120, wherein the protruding edge forms the aforementioned water-blocking member 150.

[0066] This arrangement, which integrates the water baffle 150 into the top cover 140, is not only simple in structure, but also allows the water baffle 150 to be automatically installed in the air duct 120 after the top cover 140 is assembled to the housing 100, making assembly convenient.

[0067] In summary, the top-discharge outdoor unit provided in this embodiment can effectively improve the heat dissipation conditions inside the electrical control box 300, ensure the reliability of heat dissipation, and eliminate the need to wind the cold pipes of the outdoor heat exchanger inside the electrical control box 300. It has a simple structure, efficient assembly, and low cost.

[0068] In addition, this embodiment also provides an air conditioner, including an indoor unit and the aforementioned top-discharge outdoor unit.

[0069] By installing the aforementioned top-discharge outdoor unit in the air conditioner, the air conditioner accordingly possesses all the advantages of the aforementioned top-discharge outdoor unit, which will not be elaborated upon here.

[0070] It should be noted that how the indoor unit of the air conditioner is connected to the top-discharge outdoor unit to ensure the normal operation of the air conditioner is a well-known existing technology in the art, and this embodiment does not improve on this, so it will not be described in detail here.

[0071] While the present invention has been disclosed above, it is not limited thereto. Any person skilled in the art can make various modifications and alterations without departing from the spirit and scope of the invention; therefore, the scope of protection of the present invention should be determined by the scope defined in the claims.

[0072] Finally, it should be noted that in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the term "comprising" or any other variations thereof is intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0073] In the above embodiments, descriptions of directions such as "up", "down", and "side" are based on the accompanying drawings.

[0074] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A top-discharge outdoor unit, characterized in that, The device includes a side plate (110) for forming a housing (100), an electrical cover plate (200) fixedly connected to the side plate (110), and an electrical control box (300) installed on the side plate (110). A receiving cavity is formed between the electrical cover plate (200) and the side plate (110), the electrical control box (300) is located in the receiving cavity, and a sandwich space is formed between the electrical control box (300) and the electrical cover plate (200). The electrical control box (300) has an air inlet (310) and a heat dissipation vent (3). 20), the air inlet (310) is connected to the air duct (120) of the top-outlet outdoor unit and the inner cavity of the electrical control box (300), and the heat dissipation port (320) is connected to the inner cavity and the interlayer space; the side plate (110) is provided with an air outlet (111), the air outlet (111) is connected to the interlayer space and the air duct (120), the air outlet (111) is located close to the fan blade (130) in the air duct (120), and the air inlet (310) is located away from the fan blade (130).

2. The top-discharge outdoor unit according to claim 1, characterized in that, The heat dissipation vent (320) is provided with a louvered slat (330), which extends downward relative to the direction from the inner cavity of the electrical control box (300) to the interlayer space.

3. The top-discharge outdoor unit according to claim 1, characterized in that, The heat dissipation port (320) is located above the high-temperature component (340) in the inner cavity, and / or the air outlet (111) is located above the heat dissipation port (320).

4. The top-discharge outdoor unit according to claim 1, characterized in that, The air duct (120) is provided with a water baffle (150) inside, which is opposite to the air outlet (111). The water baffle (150) is configured to prevent water droplets from the air duct (120) from entering the interlayer space through the air outlet (111).

5. The top-discharge outdoor unit according to claim 4, characterized in that, The height of the water-blocking component (150) shall not be less than 5 mm.

6. The top-discharge outdoor unit according to claim 4, characterized in that, The top cover (140) of the top-mounted air unit has a raised edge extending toward the air duct (120), the raised edge forming the water baffle (150).

7. The top-discharge outdoor unit according to any one of claims 1-6, characterized in that, The number of air inlets (310) is multiple, and / or the number of heat dissipation vents (320) is multiple, and / or the number of air outlets (111) is multiple.

8. The top-discharge outdoor unit according to any one of claims 1-6, characterized in that, The air inlet (310) is located at the bottom of the electrical control box (300).

9. The top-discharge outdoor unit according to claim 8, characterized in that, The air inlet (310) is located below the high-temperature component (340) in the inner cavity and is substantially opposite to the high-temperature component (340).

10. The top-discharge outdoor unit according to any one of claims 1-6, characterized in that, The air inlet (310) has a channel structure with a length of a and a width of b, wherein 10mm≤a≤20mm and b≥10mm.

11. An air conditioner, characterized in that, Includes an indoor air conditioning unit and an outdoor unit with top-discharge airflow as described in any one of claims 1-10.

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