Air conditioner outdoor unit

Abstract

The application discloses an air conditioner outdoor unit, which comprises a casing, a fan and an electrical box assembly. The casing is internally defined with an accommodating space, and an air inlet and an air outlet are formed on the casing. The fan is arranged in the accommodating space and close to the air outlet, and the airflow flowing from the air inlet to the air outlet is formed through rotation of the fan. The electrical box assembly is arranged in the accommodating space. The electrical box assembly comprises an electrical box body, and the electrical box body comprises a box body bottom plate and a box body side wall. The box body side wall is arranged on the box body bottom plate and cooperates with the box body bottom plate to define an electrical element accommodating cavity. At least a part of the box body side wall close to the air inlet forms an open part opening to the top of the box body side wall, and a first ventilation part is formed through the box body side wall opposite to the open part. Through improvement of the structure of the electrical box assembly, the air inlet area is increased, the ventilation volume is improved, sufficient airflow is ensured to exchange heat with electrical elements, and the convection heat dissipation effect is improved.

Description

Technical Field

[0001] This application relates to the field of air conditioning technology, and more particularly to an outdoor unit for an air conditioner. Background Technology

[0002] Air conditioners typically consist of an indoor unit and an outdoor unit. The outdoor unit houses components such as a compressor, heat exchanger, fan, and electrical components. In today's space-constrained society, maximizing space utilization is paramount, making small units with high capacity a sought-after goal. This places even greater demands on the efficient use of space within the outdoor unit. The electrical box of the outdoor unit houses the electrical components required for the air conditioner's operation. To reduce manufacturing and procurement costs and improve manufacturing efficiency, the integration of electrical components is a key direction in air conditioning development. However, the miniaturization of the overall outdoor unit further reduces the external space of the electrical box, requiring a more compact layout of electrical components within a smaller space. Therefore, efficiently dissipating heat from the electrical components inside the electrical box has become a significant technical challenge in air conditioning research and development.

[0003] Electrical boxes typically employ a front-mounted, side-mounted design, with heat dissipation primarily achieved through either refrigerant cooling or air cooling. Refrigerant cooling relies on refrigerant to transfer heat and is suitable for some non-water-related products; however, for water-related products, this method suffers from complex refrigerant piping and control structures, higher costs, and a greater risk of condensation. Therefore, electrical boxes in water-related products usually utilize air cooling, removing heat through air convection. However, the efficiency of air cooling is highly dependent on the electrical box structure and airflow design; if airflow is obstructed, the cooling effect is significantly reduced.

[0004] In practical applications, to improve the performance of miniaturized outdoor units, the area of ​​the heat exchanger needs to be increased to enhance heat exchange capacity. However, this further reduces the space available for the electrical box, limiting the heat dissipation airflow. Meanwhile, although refrigerant cooling technology has advantages in heat dissipation efficiency, its cost is very high. Therefore, how to optimize the electrical box structure and airflow layout under limited space conditions to improve air-cooling efficiency, reduce costs, and ensure operational reliability is a problem that existing technologies urgently need to solve. Utility Model Content

[0005] This application addresses, to at least some extent, one of the technical problems in the related art.

[0006] Therefore, this application aims to provide an outdoor air conditioning unit that improves the structure of the electrical box assembly, increases the air intake area, enhances ventilation, ensures sufficient airflow for heat exchange with electrical components, and improves the convective heat dissipation effect.

[0007] To achieve the above objectives, this application provides an outdoor unit for an air conditioner, including a housing, a fan, and an electrical box assembly. The housing defines an accommodating space, and an air inlet and an air outlet are formed on the housing. The fan is disposed within the accommodating space and near the air outlet, and the rotation of the fan generates an airflow from the air inlet to the air outlet. The electrical box assembly is disposed within the accommodating space. The electrical box assembly includes an electrical box body, which includes a box bottom plate and a box side wall. The box side wall is disposed on the box bottom plate and together with the box bottom plate defines an electrical accommodating cavity. At least a portion of the box side wall near the air inlet forms an open portion that opens to the top of the box side wall. A first ventilation portion is formed through the box side wall on the opposite side of the open portion.

[0008] In the above technical solution, by forming an open section in the area near the air inlet on the side wall of the box, and extending the open section to the top of the side wall of the box, a large air intake area is formed, so that the electrical box body forms a semi-open ventilation structure. The airflow can flow into the electrical box body more smoothly, significantly increasing the air intake volume, and conducting more sufficient heat exchange with the electrical components arranged therein. This enhances the convective heat dissipation effect, avoids overheating of electrical components, and ensures the reliable operation of electrical components inside the electrical box body.

[0009] In some embodiments, the electrical box assembly further includes a cover that covers the side wall of the box and does not cover the top of the opening to form an open area at the top of the opening.

[0010] In the above technical solution, the cover only covers the side of the electrical box body away from the open part, so that airflow can enter both the open part and the open area at the top of the open part, further increasing the air intake area and increasing the air intake volume, thereby improving the heat dissipation effect.

[0011] In some embodiments, the outdoor unit of the air conditioner also includes a partition, which is disposed within the housing space and divides the housing space into a fan room and an electrical room arranged laterally adjacent to each other, and a fan is installed in the fan room; The housing includes a front panel and a first side panel; the front panel encloses the fan chamber at the front of the housing and has an air outlet on the front panel; the first side panel encloses the electrical compartment on the side away from the fan chamber and has an air inlet on the first side panel. The electrical box body is located on the top of the partition and spans the fan room and the electrical room. The side wall of the box body includes a first box body side wall and a second box body side wall. The first box body side wall is close to the first side plate and has an opening. The second box body side wall is opposite to the first box body side wall and has a first ventilation section. As the fan rotates, airflow enters the electrical compartment through the air inlet on the first side panel, then enters the electrical box body through the opening, flows out of the electrical box body through the first ventilation section and enters the fan chamber, and finally flows out through the air outlet on the front panel.

[0012] In the above technical solution, the airflow in the electrical room flows from bottom to top, penetrating the internal space of the electrical room and fully exchanging heat with each electrical component. This effectively removes the heat generated by the components, reduces the operating temperature, suppresses temperature rise, improves operational reliability, and extends the service life of the electrical components.

[0013] In some embodiments, the electrical box assembly further includes a water-blocking assembly mounted on the side wall of the second box body. The water-blocking assembly includes a first water-blocking plate, a second water-blocking plate, a third water-blocking plate, a fourth water-blocking plate, and a fifth water-blocking plate. The first water-blocking plate is spaced apart from and opposite to the side wall of the second box body in the fan chamber. The second water-blocking plate extends from the bottom end of the first water-blocking plate toward the side wall of the second box body. The third water-blocking plate extends from the side of the second water-blocking plate near the side wall of the second box body toward the direction away from the fan, forming a first air outlet gap between the third water-blocking plate and the side wall of the second box body. The fourth water-blocking plate is located below the first ventilation section and extends from the side wall of the second box body toward the first water-blocking plate. The fifth water-blocking plate extends from the side of the fourth water-blocking plate near the first water-blocking plate toward the direction near the second water-blocking plate, forming a second air outlet gap between the fifth water-blocking plate and the first water-blocking plate, and forming a third air outlet gap between the fifth water-blocking plate and the third water-blocking plate. The airflow from the first ventilation section enters the fan chamber sequentially through the second air outlet gap, the third air outlet gap, and the first air outlet gap; and the liquid thrown out by the fan is blocked by the water baffle assembly to restrict the liquid from entering the electrical housing cavity from the first ventilation section.

[0014] In the above technical solution, each baffle plate is arranged in cooperation with the other on the outside of the side wall of the second box, which can effectively prevent water thrown out by the impeller of the fan from entering the electrical box body through the first ventilation part; at the same time, through the cooperation of the positions of the above baffle plates, a rotating air duct is formed in the baffle assembly, which can not only block water but also allow airflow to pass through, thus avoiding affecting the heat dissipation effect.

[0015] In some embodiments, the water-blocking assembly further includes a sixth water-blocking plate, which extends from the side of the first water-blocking plate near the front panel to the front side of the electrical box body and is connected to the electrical box body.

[0016] In the above technical solution, the sixth baffle plate closes the space between the first baffle plate and the second box side wall on the front side, effectively preventing liquid from being thrown from the front side to the second box side wall and entering the electrical box body through the first ventilation part. This allows the baffle assembly to have a water-blocking effect in multiple directions at the same time, improving the protection effect on the electrical components inside the electrical box body.

[0017] In some embodiments, a second ventilation section is formed through the sixth baffle plate, and the second ventilation section communicates with the first ventilation section; a wind duct is installed at the air outlet, the wind duct including a cylindrical section and an extension section; the cylindrical section extends from the edge of the air outlet into the fan chamber and covers the outer periphery of the fan impeller; the extension section extends from the edge of the cylindrical section located in the fan chamber in the direction of expanding the outer diameter of the wind duct, and the outer edge of the extension section is close to the electrical box body; wherein, in the air outlet direction, the sixth baffle plate is located between the extension section and the front panel.

[0018] In the above technical solution, the second ventilation section adds an air outlet channel between the water baffle component and the side wall of the second box, which improves the convection effect inside the electrical box body; in the air outlet direction, the air duct separates the sixth water baffle from the fan, and the water flow thrown out by the fan rotation is blocked by the air duct, thereby preventing the water flow from entering the space between the first water baffle and the side wall of the second box from the second ventilation section, achieving the water baffle effect and realizing the integration of the air duct function.

[0019] In some embodiments, an inductor is installed in the electrical room and is positioned close to a partition; a third ventilation section is formed on the partition corresponding to the inductor; by the rotation of the fan, airflow enters the electrical room through the air inlet, flows through the inductor, enters the fan room through the third ventilation section, and flows out through the air outlet.

[0020] In the above technical solution, separating the inductor and the electrical box body can disperse the heat-generating components and avoid heat accumulation, which is not conducive to heat dissipation. A third ventilation section is designed on the partition next to the inductor, so that heat exchange convection can be formed in the inductor area, realizing air cooling of the inductor.

[0021] In some embodiments, a seventh baffle is installed at the third ventilation section, the seventh baffle shields the third ventilation section on the fan side, the seventh baffle is spaced apart from the partition, and a ventilation chamber is formed between the seventh baffle and the partition, the top, bottom and the side away from the front panel of the ventilation chamber are closed, and a ventilation opening is formed on the side of the ventilation chamber near the front panel; the outer edge of the outer extension of the air duct is provided near the front edge of the seventh baffle to isolate the fan from the ventilation opening.

[0022] In the above technical solution, the seventh baffle can effectively block the water flow thrown out by the fan, preventing it from entering the electrical room through the third ventilation section and ensuring the stable operation of the components; a vent is formed on the front side of the seventh baffle and the partition, which can not only block water but also allow airflow to pass through, thus avoiding affecting the heat dissipation effect; the outer edge of the extension section is close to the front edge of the seventh baffle, which blocks the vent and improves the waterproof effect, while not blocking the vent and ensuring smooth airflow.

[0023] In some embodiments, the electrical box assembly further includes a radiator installed at the bottom of the electrical box body; a recess is formed on the top of the partition corresponding to the radiator, and a partition cover is installed at the recess, the partition cover including a first partition plate and a second partition plate; the first partition plate is located on the side of the radiator closer to the electrical compartment, the first partition plate extends vertically to separate the radiator and the electrical compartment, and the first partition plate is spaced apart from the radiator; the second partition plate is located on the side of the radiator away from the electrical box body, and the second partition plate is inclined downwards from the first partition plate toward the fan room.

[0024] In the above technical solution, a partition cover is installed on the top of the partition to accommodate the radiator, reserving space for the radiator installation and isolating the radiator from the electrical room; the first partition is spaced apart from the radiator to ensure airflow around the radiator and improve heat dissipation efficiency; the second partition is inclined towards the fan room at a lower height, which on the one hand increases the distance between the bottom of the radiator and the second partition to ensure smooth airflow, and on the other hand, the inclined second partition can also prevent rainwater swung up by the fan on rainy days from accumulating at the bottom of the partition cover, allowing rainwater to flow out along the inclined surface and improving waterproofing.

[0025] This application also provides an outdoor unit for an air conditioner, including a casing, a fan, and an electrical box assembly; the casing defines an accommodating space, and an air inlet and an air outlet are formed on the casing; the fan is disposed in the accommodating space and near the air outlet, and the rotation of the fan forms an airflow from the air inlet to the air outlet; the electrical box assembly is disposed in the accommodating space; the electrical box assembly includes an electrical box body, an electrical accommodating cavity is defined inside the electrical box body, an open portion is formed in the area of ​​the electrical box body near the air inlet, the open portion is continuously opened and has a predetermined area, the open portion connects the electrical accommodating cavity and the air inlet, a first ventilation portion is formed in the area of ​​the electrical box body opposite to the open portion, the first ventilation portion connects the electrical accommodating cavity and the air outlet.

[0026] In the above technical solution, by forming an open portion on the electrical box body, the open portion is continuously formed and has a predetermined area, so that the air intake area of ​​the electrical box body can be designed as needed, which can increase the air intake volume, and the airflow can enter the electrical box body more smoothly, take away more heat, avoid overheating of electrical components, and ensure the reliable operation of electrical components inside the electrical box body. Attached Figure Description

[0027] Figure 1 This is a perspective view of an outdoor unit of an air conditioner according to an embodiment of this application; Figure 2 This is a front view of an outdoor unit of an air conditioner according to an embodiment of this application; Figure 3 This is a side view of an outdoor unit of an air conditioner according to an embodiment of this application; Figure 4 This is a front view of the air conditioner outdoor unit in the open state according to an embodiment of this application; Figure 5 A three-dimensional view of the front and top open states of the outdoor unit of an air conditioner according to an embodiment of this application. Figure 1 ; Figure 6 A three-dimensional view of the front and top open states of the outdoor unit of an air conditioner according to an embodiment of this application. Figure 2 ; Figure 7 for Figure 6 A magnified view of part A in the middle; Figure 8 This is a top view of the air conditioner outdoor unit in the open state according to an embodiment of this application; Figure 9 This is a front view of the electrical box assembly according to an embodiment of this application; Figure 10 This is a top view of the electrical box assembly according to an embodiment of this application; Figure 11 For the three-dimensional representation of the electrical box assembly according to the embodiments of this application Figure 1 ; Figure 12 For the three-dimensional representation of the electrical box assembly according to the embodiments of this application Figure 2 ; Figure 13 for Figure 12 An exploded view of the electrical box assembly shown. Figure 14 This is a front view of the electrical box body and the water-blocking assembly according to an embodiment of this application; Figure 15 This is a top view of the electrical box body and the water-blocking assembly according to an embodiment of this application; Figure 16 for Figure 15 A sectional view along section line BB; Figure 17 for Figure 16 A magnified view of a portion of the central water-retaining component; Figure 18 This is a perspective view of the electrical box body and the water-blocking assembly according to an embodiment of this application; Figure 19 This is an exploded view of the electrical box body and the water-blocking assembly according to an embodiment of this application; Figure 20 For the three-dimensional representation of the front panel, partition and electrical box body according to the embodiments of this application Figure 1 ; Figure 21 For the three-dimensional representation of the front panel, partition and electrical box body according to the embodiments of this application Figure 2 ; Figure 22 This is a top view of the front panel, partition, and electrical box body according to an embodiment of this application; Figure 23 This is a front view of the front panel, partition, and electrical box body according to an embodiment of this application; Figure 24 for Figure 23 A sectional view along the CC section line; Figure 25 for Figure 24 A magnified view of part D in the middle; Figure 26 This is a schematic diagram of the electrical box body, heat sink, and partition according to an embodiment of this application; Figure 27 This is an exploded view of the electrical box body, heat sink, and partition according to an embodiment of this application; Figure 28 This is a partial schematic diagram of the partition according to an embodiment of this application; Figure 29 This is an exploded view of the driver board, power device, and mounting bracket according to an embodiment of this application.

[0028] In the picture: 100. Housing; 101. Fan compartment; 102. Electrical compartment; 110. Front panel; 111. Air outlet; 120. First side panel; 121. Air inlet; 130. Front maintenance cover; 140. Air duct; 141. Duct section; 142. Extension section; 200. Electrical box assembly; 210. Electrical box body; 211. Box bottom plate; 2111. Heat dissipation window; 212. Box side wall; 2121. First box side wall; 2122. 2123. Second box side wall; 2124. Third box side wall; 2125. Fourth box side wall; 213. Electrical appliance receiving cavity; 214. Opening; 215. First ventilation section; 220. Cover; 230. Water-blocking assembly; 231. First water-blocking component; 2311. First water-blocking plate; 2312. Second water-blocking plate; 2313. Third water-blocking plate; 2314. Sixth water-blocking plate; 2315. Second ventilation section; 232. Second water-blocking component; 2321. Fourth baffle plate; 2322, Fifth baffle plate; 2323, First assembly plate; 2301, First air outlet gap; 2302, Second air outlet gap; 2303, Third air outlet gap; 240, Radiator; 250, Mounting bracket; 251, Bracket base plate; 2511, Through opening; 252, Bracket side wall; 2521, Snap-fit ​​part; 253, First support part; 254, Second support part; 300, Partition plate; 310, First partition plate; 311 320. Third ventilation section; 330. Second partition plate; 340. Recessed part; 341. Partition cover; 341. First partition plate; 3411. Support plate; 342. Second partition plate; 400. Third water baffle; 401. Ventilation opening; 410. Seventh water baffle plate; 420. Extension plate; 430. Second assembly plate; 510. Positioning protrusion; 520. Positioning hole; 600. Fan; 700. Inductor; 800. Drive plate; 900. Power device. Detailed Implementation

[0029] 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.

[0030] 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.

[0031] In the description of this application, it should be understood that the terms "longitudinal", "lateral", "thickness", "upper", "lower", "front", "rear", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between components; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances. In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature. In this application, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0032] The present application will now be described in detail through exemplary embodiments. However, it should be understood that, without further description, elements, structures, and features in one embodiment may be advantageously incorporated into other embodiments. Air conditioners use a refrigerant circuit consisting of a compressor, condenser, expansion valve, and evaporator to perform a cooling or heating cycle. This cycle involves a series of processes—compression, condensation, expansion, and evaporation—to cool or heat the indoor space.

[0033] In some embodiments, the air conditioner includes an outdoor unit.

[0034] In some embodiments, the outdoor unit includes a compressor. The compressor is configured to compress a low-temperature, low-pressure refrigerant into a high-temperature, high-pressure gaseous refrigerant. The gaseous refrigerant discharged from the compressor flows into a condenser. The condenser condenses the gaseous refrigerant into a liquid phase, and heat is released to the surrounding environment through the condensation process.

[0035] In some embodiments, the outdoor unit further includes an outdoor heat exchanger. The outdoor heat exchanger is configured to exchange heat with outdoor air using refrigerant flowing therein.

[0036] In some embodiments, the air conditioner also includes an indoor unit.

[0037] In some embodiments, the indoor unit includes an indoor heat exchanger. The indoor heat exchanger is configured to exchange heat with indoor air using refrigerant flowing therein. The indoor heat exchanger is connected to the outdoor heat exchanger via refrigerant piping.

[0038] In some embodiments, the air conditioner further includes an expansion valve, which may be located in the indoor unit or the outdoor unit. The expansion valve is configured to expand the high-temperature, high-pressure liquid refrigerant that has condensed in the condenser into a low-pressure liquid refrigerant. The refrigerant, after expansion by the expansion valve, enters the evaporator for evaporation. The evaporator achieves a cooling effect by utilizing the latent heat of evaporation of the refrigerant to exchange heat with the surrounding environment. The low-temperature, low-pressure refrigerant gas after passing through the evaporator returns to the compressor.

[0039] The indoor and outdoor heat exchangers function as either condensers or evaporators. When the indoor heat exchanger is used as a condenser, the air conditioner operates in heating mode; when it is used as an evaporator, the air conditioner operates in cooling mode.

[0040] In some embodiments, the outdoor unit further includes a four-way valve connected within the refrigerant circuit. The four-way valve is configured to switch the flow direction of the refrigerant in the circuit so that the air conditioner can perform a cooling mode or a heating mode.

[0041] The working principle of an air conditioner is as follows: The compressor discharges refrigerant in a high-temperature, high-pressure state, which enters the outdoor heat exchanger (which acts as a condenser). There, the refrigerant condenses and liquefies into liquid refrigerant, releasing heat. The liquid refrigerant expands and depressurizes through the expansion valve, then enters the indoor heat exchanger (which acts as an evaporator). In the indoor heat exchanger, the refrigerant evaporates and vaporizes into gaseous refrigerant, absorbing heat from the surrounding environment. The air blown out by the indoor fan is cooled by the indoor heat exchanger coils, becoming cool air that is then blown into the room, achieving the cooling effect. The vaporized refrigerant then re-enters the compressor to begin the next cycle.

[0042] The working principle of an air conditioner for heating is as follows: gaseous refrigerant is compressed into a high-temperature, high-pressure gas by the compressor, enters the indoor heat exchanger (which acts as a condenser), condenses and liquefies into liquid refrigerant, and releases heat, thus achieving the heating effect. The liquid refrigerant expands and depressurizes through the expansion valve, enters the outdoor heat exchanger (which acts as an evaporator), evaporates and vaporizes into gaseous refrigerant, absorbs heat from the outdoor air, and re-enters the compressor to begin the next cycle.

[0043] like Figures 1-3 As shown, the outdoor unit of the air conditioner in this application includes a housing 100, which constitutes the overall appearance of the outdoor unit. The housing 100 generally has a rectangular shape. Defining the side of the outdoor unit used for mounting to a wall or other mounting base as the rear side, the housing 100 includes a front panel 110 located at the front, a rear panel located at the rear, and first side panels 120 and second side panels located on both sides.

[0044] The casing 100 contains a defined space. Typically, the fan 600, outdoor heat exchanger, compressor, and expansion valve are installed in this space. For outdoor units of air source heat pumps, in addition to the above-mentioned conventional components, a water-refrigerant heat exchanger and water pipes are also installed in the space.

[0045] An air inlet 121 and an air outlet 111 are formed on the housing 100. A fan 600 is positioned close to the air outlet 111, and the rotation of the fan 600 generates an airflow from the air inlet 121 to the air outlet 111.

[0046] like Figures 4-19 As shown, the outdoor unit of the air conditioner also includes an electrical box assembly 200, which is disposed within the accommodating space. The electrical box assembly 200 includes an electrical box body 210, which can be used to accommodate components such as a drive board 800, a cement resistor, and an IGBT.

[0047] Since various electrical components are installed inside the electrical box body 210, these components generate heat during operation, leading to localized temperature increases. To prevent high temperatures from affecting the normal operation of the electrical components, heat dissipation is necessary inside the electrical box body 210. When using air cooling, heat is carried away by air convection, and the design of the ventilation structure has a significant impact on the heat dissipation effect.

[0048] This application improves the structure of the electrical box body 210, thereby increasing the air intake area and ventilation volume, ensuring sufficient airflow to smoothly enter the electrical box body 210 for heat exchange with electrical components and improving convective heat dissipation. This application is implemented through the following two embodiments.

[0049] In the first implementation, such as Figures 9-19 As shown, the electrical box body 210 includes a box bottom plate 211 and a box side wall 212. The box side wall 212 is disposed on the box bottom plate 211 and together with the box bottom plate 211 defines an electrical receiving cavity 213. At least a portion of the box side wall 212 near the air inlet 121 forms an opening 214 that opens to the top of the box side wall 212. A first ventilation section 215 is formed through the box side wall 212 on the opposite side of the opening 214.

[0050] In the above embodiment, by forming an open portion 214 in the area of ​​the side wall 212 of the box body near the air inlet 121, and extending the open portion 214 to the top of the side wall 212 of the box body, the box body has a large air intake area, so that the electrical box body 210 forms a semi-open ventilation structure. The airflow entering from the air inlet 121 can flow more smoothly into the electrical box body 210, significantly increasing the air intake volume, and exchanging heat more fully with the electrical components arranged therein, enhancing the convective heat dissipation effect, avoiding overheating of electrical components, and ensuring the reliable operation of electrical components inside the electrical box body 210.

[0051] In the second implementation, such as Figures 9-19 As shown, an electrical receiving cavity 213 is defined inside the electrical box body 210. An opening 214 is formed in the area of ​​the electrical box body 210 near the air inlet 121. The opening 214 is continuously opened and has a predetermined area. The opening 214 connects the electrical receiving cavity 213 and the air inlet 121. A first ventilation section 215 is formed in the area of ​​the electrical box body 210 opposite to the opening 214. The first ventilation section 215 connects the electrical receiving cavity 213 and the air outlet 111.

[0052] In the above embodiment, by forming an opening 214 on the electrical box body 210, and the opening 214 being continuously formed and having a predetermined area, the air intake area of ​​the electrical box body 210 can be designed as needed, which can increase the air intake volume and allow the airflow to enter the electrical box body 210 more smoothly, carrying away more heat, avoiding overheating of electrical components, and ensuring the reliable operation of electrical components inside the electrical box body 210.

[0053] It is understood that the structures defined by the two implementation methods described above may overlap, but they should not be interpreted as mutually exclusive limitations.

[0054] The technical features are further described below. It should be noted that the solutions described in the following embodiments are applicable to the outdoor units of air conditioners in both of the above embodiments.

[0055] In some embodiments, such as Figures 9-13 As shown, the electrical box assembly 200 also includes a cover 220, which is disposed on the side wall 212 of the box. The cover 220 can prevent external dust, moisture or debris from directly entering the electrical housing cavity, protecting the internal electrical components; at the same time, the cover 220 can be easily removed, thereby facilitating the inspection or replacement of electrical components.

[0056] In some embodiments, the top of the opening 214 is not covered by the cover 220, thereby forming an open area on the top of the opening 214. In this embodiment, the cover 220 only covers the side of the electrical box body 210 away from the opening 214, so that both the opening 214 and the open area on top of the opening 214 can allow airflow to enter, further increasing the air intake area and increasing the air intake volume, thereby improving the heat dissipation effect.

[0057] In some embodiments, such as Figures 4-6 As shown, the outdoor unit of the air conditioner also includes a partition 300. The partition 300 is located within the receiving space and divides the space into a horizontally adjacent fan compartment 101 and an electrical compartment 102. A fan 600 is installed in the fan compartment 101 to facilitate airflow within the receiving space. Electrical components, such as the main control board, terminal blocks, and inductors 700, are installed in the electrical compartment 102 to ensure the operation of the outdoor unit. By separating the fan compartment 101 from the electrical compartment 102 using the partition 300, the airflow generated by the fan 600 can be effectively prevented from directly blowing onto the electrical components, reducing the entry of liquid, dust, or impurities ejected by the fan 600 into the electrical compartment 102, thereby improving the safety and reliability of the electrical components.

[0058] In some embodiments, such as Figure 20 and Figure 21 As shown, the partition 300 includes a first partition 310 and a second partition 320. The first partition 310 is located between the fan room 101 and the electrical room 102. The second partition 320 is bent from the rear side of the first partition 310 toward the electrical room 102. The second partition 320 is used to isolate the outdoor heat exchanger and the electrical components in the electrical room 102.

[0059] In some embodiments, such as Figure 1 and Figure 2As shown, the housing 100 also includes a front maintenance cover 130, which encloses the electrical compartment 102 on the front side. The front panel 110 is connected to the front maintenance cover 130 and encloses the fan compartment 101 on the front side. A first side panel 120 encloses the side of the electrical compartment 102 away from the fan compartment 101.

[0060] In some embodiments, an air outlet 111 is provided on the front panel 110; and an air inlet 121 is provided on the first side panel 120. With the rotation of the fan 600, the airflow enters the electrical chamber 102 through the air inlet 121 on the first side panel 120, exchanges heat with the electrical components in the electrical chamber 102, enters the fan chamber 101, and flows out through the air outlet 111 on the front panel 110.

[0061] In some embodiments, such as Figures 4-6 As shown, the electrical box body 210 is located on top of the partition 300 and spans across the fan room 101 and the electrical room 102. By placing the electrical box body 210 on top of the unit, on the one hand, the internal electrical components can be kept away from other components in the unit to avoid mutual interference and ensure the reliability of installation; on the other hand, it can effectively save the unit's piping space, freeing up the internal space of the electrical room 102 for the installation of other components, thus optimizing space utilization.

[0062] like Figure 18 and Figure 19 As shown, the side wall 212 of the electrical box body 210 includes a first side wall 2121 and a second side wall 2122 disposed opposite to each other. The first side wall 2121 is close to the first side plate 120, an opening 214 is formed on the first side wall 2121, and a first ventilation portion 215 is formed on the second side wall 2122.

[0063] As the fan 600 rotates, the airflow enters the electrical room 102 through the air inlet 121 on the first side panel 120, enters the electrical box body 210 through the opening 214, flows out of the electrical box body 210 through the first ventilation section 215 and enters the fan room 101, and finally flows out through the air outlet 111 on the front panel 110.

[0064] Through the aforementioned airflow path, the airflow in the electrical chamber 102 flows from the bottom to the top, penetrating the internal space of the electrical chamber 102 and fully exchanging heat with the various electrical components therein. This effectively removes the heat generated by the components, reduces the operating temperature, suppresses temperature rise, improves operational reliability, and extends the service life of the electrical components.

[0065] In some embodiments, such as Figure 12 , Figure 13 as well as Figure 18 , Figure 19As shown, the box sidewall 212 also includes a third box sidewall 2123 and a fourth box sidewall 2124 connecting the first box sidewall 2121 and the second box sidewall 2122 on both sides. An opening 214 is continuously formed on the first box sidewall 2121, the third box sidewall 2123, and the fourth box sidewall 2124. The opening 214 extends to the three adjacent box sidewalls 212, which can further increase the air intake area and improve the air intake volume, while also facilitating wiring. The third box sidewall 2123 is located near the front of the indoor unit, and the fourth box sidewall 2124 is located near the rear of the indoor unit.

[0066] In some embodiments, the first ventilation portion 215 is a plurality of ventilation holes formed on the side wall 2122 of the second housing.

[0067] In some embodiments, the air inlet 121 is located at the lower part of the first side panel 120. By rotating the fan 600, a negative pressure is formed in the fan chamber 101, causing external airflow to enter the electrical chamber 102 through the air inlet 121 below the first side panel 120, and flow upwards into the electrical chamber 102. The airflow then enters the electrical receiving cavity 213 through the opening 214 of the electrical box body 210. In the electrical receiving cavity 213, the airflow flows laterally and enters the fan chamber 101 through the first ventilation section 215 on the opposite side, and finally flows out through the air outlet 111 on the front panel 110.

[0068] Since the outdoor unit of the air conditioner is installed outdoors, there is a risk of rainwater entering. Furthermore, moisture in the air can also enter the casing 100 with the airflow, and during the operation of the fan 600, water may be flung outwards. Because the second box side panel is located inside the fan compartment 101, and the first ventilation section 215 faces the fan 600, there is a risk that water flung out by the fan 600 or rainwater from outside may enter the electrical box body 210 through the first ventilation section 215.

[0069] To address the above problems, in some embodiments, such as Figures 9-19 As shown, the electrical box assembly 200 also includes a water-blocking assembly 230 installed on the side wall 2122 of the second box body. The water-blocking assembly 230 is used to shield the first ventilation section 215 to prevent water or other liquids in the fan chamber 101 from entering the interior of the electrical box body 210.

[0070] like Figures 13-17 As shown, the water-blocking assembly 230 includes a first water-blocking plate 2311, a second water-blocking plate 2312, a third water-blocking plate 2313, a fourth water-blocking plate 2321, and a fifth water-blocking plate 2322.

[0071] The first baffle plate 2311 and the second box side wall 2122 are spaced apart and opposite to each other in the fan chamber 101; the second baffle plate 2312 extends from the bottom end of the first baffle plate 2311 toward the side wall 2122 of the second box; the third baffle plate 2313 extends from the side of the second baffle plate 2312 near the side wall 2122 of the second box toward the direction away from the fan 600, and a first air outlet gap 2301 is formed between the third baffle plate 2313 and the side wall 2122 of the second box; the fourth The water baffle 2321 is located below the first ventilation section 215 and extends from the second box side wall 2122 toward the first water baffle 2311; the fifth water baffle 2322 extends from the side of the fourth water baffle 2321 near the first water baffle 2311 toward the second water baffle 2312, forming a second air outlet gap between the fifth water baffle 2322 and the first water baffle 2311, and forming a third air outlet gap between the fifth water baffle 2322 and the third water baffle 2313.

[0072] With the aforementioned water-blocking component 230 installed, the airflow from the first ventilation section 215 enters the fan chamber 101 sequentially through the second air outlet gap, the third air outlet gap, and the first air outlet gap 2301; and the liquid thrown out by the fan 600 is blocked by the water-blocking component 230 to restrict the liquid from entering the electrical appliance receiving cavity 213 from the first ventilation section 215.

[0073] The first baffle plate 2311 and the second baffle plate 2312 in the aforementioned water-blocking assembly 230 shield the first ventilation hole on the outer side of the second box side wall 2122, and define a ventilation space between them. The third baffle plate 2313, the fourth baffle plate 2321, and the fifth baffle plate 2322 act as shields within the ventilation space, effectively preventing water thrown out by the impeller of the fan 600 from entering the electrical box body 210 through the first ventilation section 215. Simultaneously, through the coordinated positions of the aforementioned baffle plates, a rotating air duct is formed within the water-blocking assembly 230, which, while blocking water, allows airflow to pass through, thus avoiding impact on heat dissipation.

[0074] In some embodiments, such as Figure 14 As shown, the water-blocking assembly 230 also includes a sixth water-blocking plate 2314, which extends from the side of the first water-blocking plate 2311 near the front panel 110 to the front side of the electrical box body 210 and is connected to the electrical box body 210.

[0075] The sixth baffle plate 2314 closes the space between the first baffle plate 2311 and the second box side wall 2122 on the front side, effectively preventing liquid from being thrown from the front side to the second box side wall 2122 and entering the electrical box body 210 through the first ventilation part 215. This allows the baffle assembly 230 to have a water-blocking effect in multiple directions at the same time, improving the protection effect on the electrical components inside the electrical box body 210.

[0076] In some embodiments, such as Figure 14 As shown, a second ventilation section 2315 is formed through the sixth baffle plate 2314, and the second ventilation section 2315 is connected to the first ventilation section 215. Part of the airflow flowing out of the first ventilation section 215 flows out through the rotary ventilation channel between the first baffle plate 2311 and the fifth baffle plate 2322, and the other part flows out through the second ventilation section 2315 on the sixth baffle plate 2314.

[0077] The design of the second ventilation section 2315 increases the air outlet channel between the water baffle component 230 and the side wall 2122 of the second box, improves the convection effect inside the electrical box body 210, and avoids the air-cooling heat dissipation effect of the electrical box body 210 being affected by the setting of the water baffle component 230.

[0078] In some embodiments, such as Figure 13 and Figure 19 As shown, the first water-blocking plate 2311, the second water-blocking plate 2312, the third water-blocking plate 2313, and the sixth water-blocking plate 2314 are an integral structure, belonging to the first water-blocking component 231. The fourth water-blocking plate 2321 and the fifth water-blocking plate 2322 are an integral structure, belonging to the second water-blocking component 232. During installation, the first water-blocking component 231 and the second water-blocking component 232 are assembled according to the positional relationship of the aforementioned water-blocking plates.

[0079] In some embodiments, such as Figure 13 As shown, the second water-blocking component 232 also includes a first mounting plate 2323. The first mounting plate 2323 is bent from the edge of the fourth water-blocking plate 2321 near the side wall 2122 of the second box body, and the first mounting plate 2323 is in contact with the area of ​​the side wall 2122 of the second box body located below the first ventilation section 215.

[0080] In some embodiments, the area of ​​the sixth baffle 2314 near the electrical box body 210 is abutted against the front side wall 2123 of the third box body.

[0081] In some embodiments, such as Figure 13 , Figure 14 as well as Figure 18 and Figure 19As shown, a positioning protrusion 510 and a positioning hole 520 are provided between the assembly surface and the second box side wall 2122, and / or between the sixth baffle plate 2314 and the third box side wall 2123. The size of the positioning hole 520 is adapted to the positioning protrusion 510 so that the positioning protrusion 510 can be inserted into the positioning hole 520 and the displacement of the positioning protrusion 510 is restricted.

[0082] The positions of the positioning protrusion 510 and the positioning hole 520 can be interchanged, as long as they are installed on two mutually abutting surfaces. The cooperation of the positioning protrusion 510 and the positioning hole 520 ensures accurate positioning of the relative positions of the first assembly plate 2323 and / or the sixth baffle plate 2314 with the electrical box body 210, facilitating installation.

[0083] In some embodiments, such as Figures 20-25 As shown, an air duct 140 is installed at the air outlet 111. The air duct 140 includes a cylindrical section 141. The cylindrical section 141 extends from the edge of the air outlet 111 into the fan chamber 101 and covers the outer periphery of the impeller of the fan 600. The air duct 140 can gather and guide the airflow thrown out by the impeller of the fan 600 to the air outlet 111 for discharge, thereby improving the air delivery efficiency of the air outlet 111.

[0084] In some embodiments, such as Figure 21 , Figure 22 ,and Figure 25 As shown, the air duct 140 also includes an extension section 142. The extension section 142 extends from the edge of the duct section 141 located within the fan chamber 101 in a direction that expands the outer diameter of the air duct 140, with the outer edge of the extension section 142 close to the electrical box body 210. For example... Figure 22 As shown, in the air outlet direction, the sixth baffle plate 2314 is located between the outer extension 142 and the front panel 110.

[0085] By designing the extension section 142, the air duct 140 overlaps with the electrical box body 210 in the air outlet direction, separating the sixth water baffle 2314 from the fan 600. The water flow thrown out by the rotating fan 600 is blocked by the air duct 140, preventing water from entering the space between the first water baffle 2311 and the second box body side wall 2122 through the second ventilation section 2315, and then entering the electrical box body 210 through the first ventilation section 215. The water-blocking effect is cleverly achieved by using the air duct 140, realizing the functional integration of the air duct 140.

[0086] In some embodiments, such as Figures 4-7 and Figure 20As shown, an inductor 700 is installed in the electrical compartment 102. The inductor 700 is positioned near the partition 300, and a third ventilation section 311 is formed on the partition 300 corresponding to the inductor 700. Specifically, the inductor 700 is positioned near the first partition 310, and the third ventilation section 311 is formed on the first partition 310. By rotating the fan 600, airflow enters the electrical compartment 102 through the air inlet 121, flows past the inductor 700, enters the fan compartment 101 through the third ventilation section 311, and flows out through the air outlet 111.

[0087] As a key heat-generating component, inductor 700 requires heat dissipation. Separating inductor 700 from the main body 210 of the electrical box disperses the heat-generating components, preventing heat accumulation and hindering heat dissipation. A third ventilation section 311 is designed on the partition 300 next to inductor 700, allowing heat exchange convection to occur in the inductor 700 area, achieving air-cooled heat dissipation for inductor 700.

[0088] In some embodiments, such as Figure 7 As shown, a seventh baffle plate 410 is installed at the third ventilation section 311. The seventh baffle plate 410 blocks the third ventilation section 311 on the side of the fan 600. The seventh baffle plate 410 is spaced apart from the partition plate 300, and a ventilation chamber is formed between the seventh baffle plate 410 and the partition plate 300. The top, bottom and the side away from the front panel 110 of the ventilation chamber are closed. A ventilation opening 401 is formed on the side of the ventilation chamber near the front panel 110.

[0089] The seventh baffle plate 410 effectively blocks the water jets ejected by the fan 600, preventing it from entering the electrical room 102 via the third ventilation section 311. This prevents moisture from affecting components such as the inductor 700 and ensures stable operation of the components. Simultaneously, a ventilation opening 401 is formed on the front side of the seventh baffle plate 410 and the partition plate 300, allowing airflow while also blocking water, thus preventing any impact on heat dissipation.

[0090] In some embodiments, such as Figure 21 , Figure 24 and Figure 25 As shown, the outer edge of the extension 142 of the air duct 140 is positioned close to the front edge of the seventh water baffle 410, thereby isolating the fan 600 from the vent 401. The proximity of the outer edge of the extension 142 to the front edge of the seventh water baffle 410 can block the water flow ejected by the fan 600, preventing water from directly entering the vent 401 from the front, thus improving the waterproofing effect. Simultaneously, it does not obstruct the vent 401, ensuring smooth airflow.

[0091] In some embodiments, such as Figure 7As shown, the top and bottom edges of the seventh baffle plate 410 extend toward the partition plate 300 to form two extension plates 420, and the front edges of the two extension plates 420, the front edge of the seventh baffle plate 410, and the partition plate 300 define the ventilation opening 401. The two extension plates 420 are bent near the edges of the partition plate 300 to form two second mounting plates 430, and the two second mounting plates 430 are attached to and connected to the partition plate 300.

[0092] The seventh water baffle 410, the two extension plates 420 and the two second assembly plates 430 are an integral structure and belong to the third water baffle component.

[0093] In some embodiments, a positioning protrusion 510 and a positioning hole 520 are provided between the two second mounting surfaces and the partition plate 300. The size of the positioning hole 520 is adapted to the positioning protrusion 510 so that the positioning protrusion 510 can be inserted into the positioning hole 520 and the displacement of the positioning protrusion 510 is restricted. The positions of the positioning protrusion 510 and the positioning hole 520 can be interchanged.

[0094] In some embodiments, such as Figures 9-19 As shown, the electrical box assembly 200 also includes a heat sink 240, which is mounted on the bottom of the electrical box body 210.

[0095] Given that the electrical components inside the electrical box, such as the drive board 800, generate a significant amount of heat during operation, a heat sink 240 is added in addition to air cooling. This dual cooling method further enhances the heat dissipation effect, extends the service life of electrical components, and improves the operational stability and reliability of the air conditioning unit. The heat sink 240 is installed at the bottom of the electrical box body 210, close to the rotating area of ​​the fan 600, to accelerate the heat dissipation effect.

[0096] In some embodiments, the radiator 240 can be an aluminum finned radiator, which has a relatively large surface area and good heat dissipation effect. The height of the fins can be extended downwards according to the heat generated, increasing the heat dissipation surface area. In addition, the fin design is aligned with the airflow direction of the airflow field to improve airflow efficiency.

[0097] In some embodiments, such as Figures 26-28 As shown, a recess 330 is formed on the top of the partition 300 corresponding to the heat sink 240, and a partition cover 340 is installed in the recess 330.

[0098] The partition cover 340 includes a first partition plate 341 and a second partition plate 342. The first partition plate 341 is located on the side of the radiator 240 closest to the electrical compartment 102. The first partition plate 341 extends vertically to separate the radiator 240 from the electrical compartment 102, and is spaced apart from the radiator 240. The second partition plate 342 is located on the side of the radiator 240 furthest from the electrical box body 210. The second partition plate 342 is inclined downwards from the first partition plate 341 into the fan compartment 101.

[0099] like Figure 26 As shown, a partition cover 340 is installed on the top of the partition 300 to accommodate the radiator 240. The partition cover 340 provides space for the installation of the radiator 240 and isolates the radiator 240 from the electrical room 102. The first partition plate 341 is spaced apart from the radiator 240 to ensure airflow around the radiator 240 and improve heat dissipation efficiency. The second partition plate 342 is inclined towards the fan room 101 at a lower height, which increases the distance between the bottom of the radiator 240 and the second partition plate 342, ensuring smooth airflow. At the same time, the inclined second partition plate 342 can also prevent rainwater from being splashed by the fan 600 from accumulating at the bottom of the partition cover 340, allowing rainwater to flow out along the inclined surface and improving waterproofing.

[0100] In some embodiments, such as Figure 27 As shown, the top edge of the first partition plate 341 is folded to form a support plate 3411, and the bottom of the electrical box body 210 is supported by the support plate 3411. Since a radiator 240 is installed at the bottom of the electrical box body 210, the weight of the radiator 240 needs to be borne by the electrical box body 210. The support plate 3411 has a certain area, which can effectively support the electrical box body 210 with the radiator 240, improving the stability of the installation.

[0101] In some embodiments, such as Figure 27 As shown, a heat dissipation window 2111 is formed through the bottom plate 211 of the electrical box body 210. The size of the heat dissipation window 2111 is slightly larger than the top surface of the radiator 240, so that the radiator 240 can exchange heat with the electrical components in the electrical receiving cavity 213 through the heat dissipation window 2111.

[0102] like Figure 13 , Figure 27 and Figure 29 As shown, a mounting bracket 250 is installed in the electrical appliance housing cavity 213. The mounting bracket 250 includes a bracket base plate 251 and a bracket side wall 252, forming an installation space between the bracket base plate 251 and the bracket side wall 252. The size of the bracket base plate 251 is larger than the size of the heat dissipation window 2111, so that the bracket base plate 251 is supported by the housing base plate 211. Figure 29As shown, a through opening 2511 is formed on the base plate 251 of the bracket, and the orthographic projection of the through opening 2511 on the base plate 211 of the box is located inside the heat dissipation window 2111.

[0103] The driver board 800 is installed within the mounting space, and the power device 900 is mounted on its bottom. The heat sink 240 is mounted on the bottom of the bracket base plate 251 and extends from the bottom of the electrical box body 210 via a heat dissipation window 2111. As a key heat-generating component, the power device 900 is positioned at the bottom of the driver board 800, close to the heat sink 240, to improve its heat dissipation and prevent excessive temperature rise. Optionally, the power device 900 is an IGBT.

[0104] The heat sink 240 is mounted on the bottom of the bracket base plate 251, which is supported by the housing base plate 211. The weight of the heat sink 240 is transferred to the housing base plate 211 through the bracket base plate 251, preventing the weight of the heat sink 240 from exerting a damaging pull on the pins of the connecting devices.

[0105] In some embodiments, such as Figure 29 As shown, multiple snap-fit ​​portions 2521 are provided on the inner side of the bracket sidewall 252, and multiple first support portions 253 are provided along the inner side of the bracket sidewall 252. The snap-fit ​​portions 2521 are located near the top of the bracket sidewall 252. The distance between the top of the first support portion 253 and the snap-fit ​​portion 2521 in the height direction is adapted to the thickness of the drive plate 800, so that the drive plate 800 is positioned between the first support portion 253 and the snap-fit ​​portion 2521, which serves as an upper and lower limit.

[0106] To ensure the stability of the drive board 800 during installation, two or more snap-fit ​​parts 2521 and first support parts 253 are evenly provided on the side wall 252 of each bracket. The snap-fit ​​parts 2521 and the first support parts 253 can be staggered to improve the limiting effect at different positions.

[0107] In some embodiments, such as Figure 29 As shown, a plurality of second support portions 254 are provided on the bracket base plate 251. The second support portions 254 have the same height as the first support portions 253 and are used to support the area of ​​the drive board 800 near the middle position to ensure the reliability of the drive board 800 installation.

[0108] Finally, it should be noted that the various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0109] The above embodiments are only used to illustrate the technical solution of this utility model and not to limit it; although the utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications can still be made to the specific implementation of this utility model or equivalent substitutions can be made to some technical features without departing from the spirit of the technical solution of this utility model, and all such modifications and substitutions should be covered within the scope of the technical solution claimed by this utility model.

Claims

1. An outdoor unit for an air conditioner, characterized in that, include: The housing has an internally defined space, and an air inlet and an air outlet are formed on the housing. A fan is located within the accommodating space and near the air outlet. The rotation of the fan generates an airflow from the air inlet to the air outlet. An electrical box assembly is disposed within the receiving space; the electrical box assembly includes an electrical box body, the electrical box body comprising: Box bottom plate; as well as The side wall of the box body is provided on the bottom plate of the box body and together with the bottom plate of the box body defines an electrical appliance receiving cavity. At least a portion of the side wall of the box body near the air inlet forms an open portion that opens to the top of the side wall of the box body. The side wall of the box body has a first ventilation portion that extends through the open portion on the opposite side.

2. The outdoor unit of the air conditioner according to claim 1, characterized in that, The electrical box assembly also includes a cover that is disposed on the side wall of the box and does not cover the top of the opening, so as to form an open area on the top of the opening.

3. The outdoor unit of the air conditioner according to claim 1 or 2, characterized in that, It also includes a partition, which is disposed within the accommodating space and divides the accommodating space into a fan room and an electrical room arranged laterally adjacent to each other, wherein the fan is installed in the fan room; The housing includes: Front panel, the front panel enclosing the fan chamber on the front side of the housing, and the air outlet is provided on the front panel; and A first side panel, which encloses the side of the electrical room away from the fan room, and the air inlet is provided on the first side panel; The electrical box body is located at the top of the partition and spans the fan room and the electrical room. The side wall of the box body includes: The opening is formed on the side wall of the first box body, near the first side plate; and The second box sidewall is opposite to the first box sidewall, and the first ventilation section is formed on the second box sidewall; As the fan rotates, airflow enters the electrical room through the air inlet on the first side panel, enters the electrical box body through the opening, flows out of the electrical box body through the first ventilation section and enters the fan room, and finally flows out through the air outlet on the front panel.

4. The outdoor unit of the air conditioner according to claim 3, characterized in that, The electrical box assembly further includes a water-blocking component installed on the side wall of the second box body, the water-blocking component comprising: The first baffle plate is disposed in the fan chamber, spaced apart from and opposite to the side wall of the second box body; The second baffle extends from the bottom end of the first baffle toward the side wall of the second box. The third baffle plate extends from the side of the second baffle plate near the side wall of the second box body away from the fan, and a first air outlet gap is formed between the third baffle plate and the side wall of the second box body. A fourth baffle plate is disposed below the first ventilation section and extends from the side wall of the second housing towards the first baffle plate; and The fifth baffle extends from the side of the fourth baffle closer to the first baffle toward the direction closer to the second baffle, forming a second air outlet gap between the fifth baffle and the first baffle, and forming a third air outlet gap between the fifth baffle and the third baffle. The airflow from the first ventilation section enters the fan chamber sequentially through the second air outlet gap, the third air outlet gap, and the first air outlet gap; and the liquid thrown out by the fan is blocked by the water-blocking assembly to restrict the liquid from entering the electrical appliance receiving cavity from the first ventilation section.

5. The outdoor unit of the air conditioner according to claim 4, characterized in that, The water-blocking assembly also includes a sixth water-blocking plate, which extends from the side of the first water-blocking plate near the front panel to the front side of the electrical box body and is connected to the electrical box body.

6. The outdoor unit of the air conditioner according to claim 5, characterized in that, A second ventilation section is formed through the sixth water baffle plate, and the second ventilation section is connected to the first ventilation section; An air duct is installed at the air outlet, and the air duct includes: The cylindrical section extends from the edge of the air outlet into the fan chamber and covers the outer periphery of the fan impeller. The outer extension extends from the edge of the cylindrical section located in the fan room in a direction that expands the outer diameter of the air duct, and the outer edge of the outer extension is close to the electrical box body; In the air outlet direction, the sixth baffle is located between the outer extension and the front panel.

7. The outdoor unit of the air conditioner according to claim 6, characterized in that, An inductor is installed in the electrical room and is positioned close to the partition; a third ventilation section is formed on the partition corresponding to the inductor. As the fan rotates, airflow enters the electrical room through the air inlet, flows past the inductor, enters the fan room through the third ventilation section, and flows out through the air outlet.

8. The outdoor unit of the air conditioner according to claim 7, characterized in that, A seventh baffle plate is installed at the third ventilation section. The seventh baffle plate blocks the third ventilation section on the fan side. The seventh baffle plate is spaced apart from the partition plate, and a ventilation chamber is formed between the seventh baffle plate and the partition plate. The top, bottom and the side away from the front panel of the ventilation chamber are closed. A ventilation opening is formed on the side of the ventilation chamber near the front panel. The outer edge of the outer extension of the air duct is located near the front edge of the seventh baffle plate to isolate the fan from the vent.

9. The outdoor unit of the air conditioner according to claim 3, characterized in that, The electrical box assembly also includes a heat sink, which is installed at the bottom of the electrical box body; A recess is formed at the top of the partition corresponding to the heat sink, and a partition cover is installed at the recess. The partition cover includes: A first partition plate is located on the side of the radiator closer to the electrical compartment. The first partition plate extends vertically to separate the radiator from the electrical compartment. The first partition plate is spaced apart from the radiator. The second partition plate is located on the side of the radiator away from the electrical box body, and the second partition plate is inclined downwards from the first partition plate toward the fan room.

10. An outdoor unit for an air conditioner, characterized in that, include: The housing has an internally defined space, and an air inlet and an air outlet are formed on the housing. A fan is located within the accommodating space and near the air outlet. The rotation of the fan generates an airflow from the air inlet to the air outlet. An electrical box assembly is disposed within the accommodating space; the electrical box assembly includes an electrical box body, an electrical accommodating cavity is defined inside the electrical box body, an open portion is formed in the region of the electrical box body near the air inlet, the open portion is continuously opened and has a predetermined area, the open portion connects the electrical accommodating cavity and the air inlet, a first ventilation portion is formed in the region of the electrical box body opposite to the open portion, the first ventilation portion connects the electrical accommodating cavity and the air outlet.

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