Outdoor unit and air conditioner

Abstract

The utility model relates to refrigeration and heating equipment technical field discloses an outdoor unit and air conditioner. The outdoor unit includes the outer casing and electric control box. The outer casing inside is equipped with the middle baffle, the middle baffle is used for separating the inner chamber of the outer casing into right chamber and left chamber, right chamber is used for installing the fan, and left chamber is used for installing the compressor. The electric control box is arranged in the right chamber and is above the fan. The inner chamber of the outdoor unit is separated into left and right two chambers by the middle baffle: the compressor is arranged in the left chamber, and the electric control box is arranged in the right chamber. This layout realizes the physical isolation between the electric control box and the compressor, fundamentally avoids the direct heat radiation and baking effect of the compressor on the electric control box, and significantly reduces the influence of external heat source on the temperature of the electric control box. The problem that the temperature rise of the electric control box of the outdoor unit in the prior art is more serious and the heat dissipation performance requirement of the electric control box is higher is solved.

Description

Technical Field

[0001] This utility model relates to the field of refrigeration and heating equipment technology, and in particular to an outdoor unit and an air conditioner. Background Technology

[0002] Air conditioners typically consist of an indoor unit and an outdoor unit, connected by refrigerant piping to form a refrigerant circulation loop for cooling and heating. Currently, the outdoor unit's electrical control box is mostly located on the refrigerant side (i.e., the compressor side), above the compressor. The compressor generates a significant amount of heat during operation, continuously baking the electrical control box above it, causing the box temperature to rise. Simultaneously, the electronic control modules inside the box also generate heat during operation, further exacerbating the internal temperature rise. This dual internal and external heat load significantly increases the requirements for the electrical control box's heat dissipation performance.

[0003] Therefore, how to effectively improve the heat dissipation capacity of the outdoor unit's electrical control box has become a key technical problem that the industry urgently needs to solve. Utility Model Content

[0004] This utility model provides an outdoor unit and an air conditioner to solve the defects of the existing outdoor unit's electrical control box, which has serious temperature rise and high requirements for the heat dissipation performance of the electrical control box.

[0005] This utility model provides an outdoor unit, including: The outer casing has an internal partition plate; the partition plate is used to divide the inner cavity of the outer casing into a right chamber and a left chamber; the right chamber is used to install a fan, and the left chamber is used to install a compressor. The electrical control box is located in the right chamber and above the fan.

[0006] According to the outdoor unit provided by this utility model, the left side panel of the electrical control box is provided with an air inlet, and the front side panel of the electrical control box is provided with an air outlet.

[0007] According to the outdoor unit provided by this utility model, the air outlet is arranged on the front side panel of the electrical control box away from the air inlet.

[0008] According to the outdoor unit provided by this utility model, a wind deflector and rain shield are installed at the air outlet of the electrical control box, and multiple ventilation and rain shield openings are formed on the wind deflector and rain shield.

[0009] According to the outdoor unit provided by this utility model, the opening of the ventilation and rainproof vent faces downward.

[0010] The outdoor unit provided by this utility model also includes: A radiator is arranged in the right chamber; the bottom plate of the electrical control box has a mounting opening, through which the radiator passes and connects to the electrical control module.

[0011] According to the outdoor unit provided by this utility model, the base plate of the electrical control box is installed on the fan bracket, the rear side plate of the electrical control box is connected to the upper end of the rear side wall of the condenser through connecting sheet metal, the left side plate of the electrical control box is connected to the middle partition plate, and the right side plate of the electrical control box is attached to the upper end surface of the left side wall of the condenser through overlapping sheet metal.

[0012] According to the outdoor unit provided by this utility model, there is a reserved gap between the rear side plate of the electrical control box and the rear side wall of the condenser.

[0013] According to the outdoor unit provided by this utility model, the base plate of the electrical control box includes: Right bottom plate, left bottom plate and middle bottom plate; A right support plate, the upper end of which is connected to the right end of the middle base plate, and the lower end of which is connected to the left end of the right base plate; A left support plate, the upper end of which is connected to the left end of the middle base plate, and the lower end of which is connected to the right end of the left base plate.

[0014] This utility model also provides an air conditioner, including the outdoor unit described in any of the above claims.

[0015] The outdoor unit provided by this utility model clearly divides its internal cavity into two chambers, left and right, through a partition: the compressor is located in the left chamber, while the electrical control box is located in the right chamber. This layout achieves physical isolation between the electrical control box and the compressor, fundamentally avoiding direct heat radiation and baking effects from the compressor on the electrical control box, and significantly reducing the impact of external heat sources on the temperature of the electrical control box. The right chamber is used to install the fan, and the electrical control box is placed above the fan. When the fan is running, it can generate a continuous and stable forced airflow. The electrical control box is located upstream or directly above the airflow path, which can fully utilize the airflow to cool its surface and interior, achieving convective heat transfer and effectively removing the heat generated by the electrical control box itself during operation (such as the heat generated by the electrical control module), thereby significantly improving heat dissipation efficiency. Moving the electrical control box from the high-temperature compressor side (left chamber) to the right chamber where the fan is located not only avoids the thermal influence of the compressor, but also places the electrical control box in a lower-temperature environment with better airflow organization. This optimized layout ensures that the electrical control box is located in a relatively low-temperature, high-wind area within the outdoor unit, while also facilitating the timely exhaust of hot air and preventing heat accumulation. This significantly improves overall heat dissipation performance and solves the problem of severe temperature rise in the electrical control box of the outdoor unit in existing technologies, which places high demands on the heat dissipation performance of the electrical control box. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in this utility model 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 some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0017] Figure 1 This is one of the structural schematic diagrams of the outdoor unit provided by this utility model.

[0018] Figure 2 This is the second structural schematic diagram of the outdoor unit provided by this utility model.

[0019] Figure 3 This is the third structural schematic diagram of the outdoor unit provided by this utility model.

[0020] Figure 4 This is the fourth structural schematic diagram of the outdoor unit provided by this utility model.

[0021] Figure 5 yes Figure 4 A magnified structural diagram of point A in the middle.

[0022] Figure 6 yes Figure 5 A magnified structural diagram at point B in the middle.

[0023] Figure 7 This is the fifth structural schematic diagram of the outdoor unit provided by this utility model.

[0024] Figure 8 This is a schematic diagram of the structure of the base plate of the electrical control box provided by this utility model.

[0025] Figure 9 This is a cross-sectional structural diagram of the cover plate of the electrical control box provided by this utility model.

[0026] Figure 10 This is a schematic diagram of the inner side of the cover plate of the electrical control box provided by this utility model.

[0027] Figure 11 This is a schematic diagram of the wiring harness arrangement structure of the electrical control box provided by this utility model.

[0028] Figure label: 100. Outdoor housing; 111. Middle partition; 112. Right chamber; 113. Left chamber; 114. Mounting sheet metal; 115. Connecting sheet metal; 116. Overlapping sheet metal; 117. Reserved clearance; 200. Electrical control box; 210. Box body; 220. Cover plate; 230. Wiring harness organization structure; 201. Side panel; 202. Bottom plate; 203. Air guide and rain shield; 204. Ventilation and rain shield opening; 211. Air inlet; 212. Air outlet; 213. Wiring hole; 215. Right bottom plate; 216. Left bottom plate; 217. Middle bottom plate; 218. Right support plate; 219. Left support plate; 221. Recessed part; 231. Support component; 232. Guide component; 300, Fan; 400, Compressor; 500, Radiator; 600, Air Guide Cover; 611, Flow Deflector. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0030] In the description of this specification, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are used only for the convenience of describing this specification. They do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this specification. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0031] In the description of this specification, it should be noted that, unless otherwise expressly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this utility model based on the specific circumstances.

[0032] In this specification, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, "above," "over," and "on top" of 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.

[0033] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the embodiments of this specification. 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.

[0034] In the embodiments of this specification, "at least one" means one or more, and "more than one" means two or more. "And / or" describes the relationship between related objects, indicating that there can be three relationships. For example, A and / or B can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone.

[0035] Currently, air conditioners typically consist of two main parts: an indoor unit and an outdoor unit. These two units are connected by refrigerant piping, forming a closed refrigerant circulation loop to jointly achieve cooling and heating functions. The outdoor unit mainly includes the casing, compressor, condenser, fan, and electrical control box. The electrical control box contains a main control board and a drive board. The drive board typically integrates multiple electrical control modules, such as compressor drive, fan drive, and capacitors, and is connected to external actuators like the compressor and fan via wiring harnesses.

[0036] Currently, the electrical control box is installed on the compressor side, above the compressor. During operation, the compressor generates a large amount of heat, which continuously heats the electrical control box above it, causing the box temperature to rise. This increases the requirements for the heat dissipation performance of the electrical control box. Therefore, how to effectively improve the heat dissipation capacity of the outdoor unit's electrical control box has become a key technical problem that urgently needs to be solved in the industry.

[0037] To address the problem of severe temperature rise in the electrical control box of existing outdoor units, which places high demands on the heat dissipation performance of the electrical control box, this utility model provides an outdoor unit.

[0038] like Figure 1 and 2 As shown, in a specific embodiment of the first aspect of this utility model, the outdoor unit includes an outdoor unit housing 100, an electrical control box 200, a fan 300, and a compressor 400.

[0039] The outer casing 100 has a partition 111 installed inside; the partition 111 divides the inner cavity of the outer casing 100 into a right chamber 112 and a left chamber 113; the right chamber 112 is used to install the fan 300, and the left chamber 113 is used to install the compressor 400. The electrical control box 200 is located in the right chamber 112 and above the fan 300.

[0040] In this embodiment, the outdoor unit's interior is clearly divided into left and right chambers by a partition 111: the compressor 400 is located in the left chamber 113, while the electrical control box 200 is located in the right chamber 112. This layout achieves physical isolation between the electrical control box 200 and the compressor 400, fundamentally avoiding direct heat radiation and baking effects from the compressor 400 on the electrical control box 200, and significantly reducing the impact of external heat sources on the temperature of the electrical control box 200. The right chamber 112 is used to install the fan 300, and the electrical control box 200 is positioned above the fan 300. When the fan 300 is running, it generates a continuous and stable forced airflow. The electrical control box 200 is located upstream or directly above the airflow path, allowing it to fully utilize this airflow to cool its surface and interior, achieving convective heat transfer and effectively removing the heat generated by the electrical control box 200 itself during operation (such as the heat generated by the electrical control module), thereby significantly improving heat dissipation efficiency. Moving the electrical control box 200 from the high-temperature compressor 400 side (left chamber 113) to the right chamber 112 where the fan 300 is located not only avoids the thermal impact of the compressor 400, but also places the electrical control box 200 in a lower-temperature environment with better airflow organization. This optimized layout ensures that the electrical control box 200 is located in a relatively low-temperature, high-wind area of ​​the outdoor unit, while facilitating the timely exhaust of hot air and preventing heat accumulation. The overall heat dissipation performance is greatly improved, solving the problem of severe temperature rise in the electrical control box 200 of the outdoor unit and the high requirements for the heat dissipation performance of the electrical control box 200 in the existing technology.

[0041] Optionally, the base plate 202 of the electrical control box 200 is mounted on the fan bracket, the rear side plate of the electrical control box 200 is connected to the upper end of the rear side wall of the condenser through the connecting sheet metal 115, the left side plate of the electrical control box 200 is connected to the middle partition plate 111, and the right side plate of the electrical control box 200 is attached to the upper end of the left side wall of the condenser through the overlapping sheet metal 116.

[0042] In this embodiment, the electrical control box 200 is rigidly fixed to the fan bracket, the middle partition 111, and the left and rear walls of the condenser through multiple points via the base plate 202, left side plate, right side plate, and rear side plate, forming a stable three-dimensional installation structure. This improves the structural stability and vibration resistance of the electrical control box 200 under outdoor unit operation (especially vibration from the fan 300 and compressor 400), preventing loose connections or component damage due to long-term vibration. The electrical control box 200 does not have an additional independent support frame; instead, it cleverly utilizes existing robust structural components such as the fan bracket, middle partition 111, and the condenser itself as the installation base, achieving a "frameless" installation. This saves internal space, reduces the number of dedicated fasteners, and lowers material costs and overall weight. The base plate 202, installed on the fan bracket, effectively creates an airflow channel at the bottom of the electrical control box 200, allowing the airflow generated by the fan 300 to flow under the box 210 and carry away some heat. The electrical control box 200 is in close contact with these cold wall surfaces through sheet metal (overlapping sheet metal 116, connecting sheet metal 115), which is equivalent to heat dissipation aided by heat conduction, allowing heat inside the box to be transferred to the condenser wall surface for dissipation more quickly. This modular positioning and installation method clearly defines the assembly benchmarks in each direction (such as the height of the fan bracket, the position of the partition plate 111, and the condenser wall surface), making the positioning of the electrical control box 200 during the final assembly process simpler and more accurate. Assembly workers can quickly connect each side of the box 210 to the corresponding mounting points, simplifying the operation steps and improving the assembly efficiency and consistency of the production line.

[0043] like Figure 2 and Figure 3As shown, optionally, a reserved gap 117 is provided between the rear panel of the electrical control box 200 and the rear wall of the condenser. This reserved gap 117 provides vibration buffer and isolation space, effectively preventing damage to the fragile aluminum foil fins on the outside of the condenser due to vibration. The aluminum foil fins of the condenser are very thin and flexible, mainly bonded to the copper tubes through an expansion joint process, resulting in limited mechanical strength. If the rear panel of the electrical control box 200 is rigidly fixed to the condenser wall, the slight relative displacement between them during vibration will translate into continuous pulling or squeezing of the condenser wall. This repeated stress will eventually act on the aluminum foil, causing minor issues such as fin distortion and deformation affecting heat exchange efficiency, and potentially leading to fatigue cracks or even tearing at the root of the aluminum foil. The reserved gap 117 provides the necessary tolerance space for the slight relative movement between the two during vibration, avoiding squeezing and pulling, fundamentally eliminating this stress source, and protecting the integrity of the aluminum foil. Despite the reserved gap 117, an effective heat conduction path can still be established between the electrical control box 200 and the condenser through the connection via "connecting sheet metal 115," aiding in heat dissipation. This design cleverly balances the relationship between heat dissipation requirements and mechanical protection: it utilizes the condenser as a cold source to aid heat dissipation while avoiding the risk of mechanical damage through a flexible (non-contact) installation method.

[0044] like Figure 7 and Figure 8As shown, optionally, the base plate 202 of the electrical control box 200 includes a right base plate 215, a left base plate 216, a middle base plate 217, a right support plate 218, and a left support plate 219. The upper end of the right support plate 218 is connected to the right end of the middle base plate 217, and the lower end of the right support plate 218 is connected to the left end of the right base plate 215. The upper end of the left support plate 219 is connected to the left end of the middle base plate 217, and the lower end of the left support plate 219 is connected to the right end of the left base plate 216. When the compact horizontal space of the outdoor unit is almost completely occupied by large components such as the compressor 400 and the condenser, the traditional flat base plate 202 will severely restrict the vertical (top and bottom) space of the electrical control box 200. The U-shaped base plate 202 in this embodiment utilizes the lower space of the right chamber 112 to increase the internal height of the electrical control box 200, allowing for more flexible arrangement of electrical control modules (such as PCB boards, capacitors, reactors, etc.) and enabling stacked installation. Simultaneously, it provides more space for internal wiring harness routing, fixing, and buffering, preventing excessive bending or component compression due to limited space, thus improving electrical safety and assembly convenience. The right support plate 218 and left support plate 219, together with the middle base plate 217 and the left and right base plates 215, form a continuous load-bearing frame. This structure, similar to a truss or bridge support beam in construction, effectively disperses and transfers the weight of internal components (especially heavier PFC reactors, compressor 400 drive modules, etc.) and stress generated by vibration to the entire base plate 202 via the support plates, and then to its mounting foundation (such as a fan bracket). Compared to a single-layer horizontal plate, this three-dimensional structure with vertical support significantly increases the moment of inertia of its cross-section, resulting in a much smaller bending deformation (deflection) of the base plate 202 under the same load. This ensures the overall structural stability of the electrical control box 200 and prevents excessive deformation of the base plate 202 from compressing or damaging other components below it. After the middle base plate 217 is raised, an airflow channel is naturally formed between it and the left and right base plates 215. The cooling airflow generated by the fan 300 can not only blow over the outer surface of the electrical control box 200, but some airflow can also flow through this bottom channel to directly cool the "foundation" of the electrical control box 200, achieving double-sided heat dissipation and further reducing the internal temperature of the box.

[0045] For example, the electrical control box 200 includes a box body 210 and a cover plate 220; the box body 210 includes a side panel 201 and a bottom plate 202; the front side panel, left side panel, right side panel and rear side panel of the electrical control box 200 are connected end to end to form the side panel 201. The bottom plate 202 is installed at the bottom of the side panel 201, the upper end of the side panel 201 is open, and the cover plate 220 is opened at the upper end of the side panel 201 to close the opening.

[0046] like Figure 2As shown, in some embodiments of this utility model, the electrical control box 200 includes a box body 210 and multiple wire harness management structures 230. The box body 210 is used to install electrical control function modules. A wire passage hole 213 is provided on the side panel 201 of the box body 210 for wire harnesses to enter and exit the box body 210. Multiple wire harness management structures 230 are installed at intervals along the circumference of the box body 210 on the inner side of the box body 210, for arranging the wire harnesses along the inner side of the box body 210.

[0047] In this embodiment, by arranging the wire harness organization structure 230 circumferentially at intervals on the inner side of the side panel 201, the scattered and messy wire harnesses can be concentrated and fixed in the side panel 201 of the housing 210, freeing up space in the central area of ​​the housing 210, reducing the obstruction of airflow by the wire harnesses, and facilitating airflow and heat dissipation around the electronic control functional modules (such as IGBTs, rectifier bridges, and other heat-generating components), thereby improving the overall heat dissipation performance and reducing the risk of failure due to overheating. The neat wiring avoids accidental contact and friction between the wire harnesses and sharp edges, high-temperature components, or moving parts, reducing the risk of insulation wear, short circuits, or open circuits. At the same time, the clear wiring also reduces the possibility of terminal loosening due to wire harness stress, enhancing connection reliability. The clear and orderly wire harness layout allows maintenance personnel to quickly identify, trace, and access specific lines, significantly simplifying the process of daily inspection, fault diagnosis, component replacement, or subsequent maintenance. Furthermore, this structure also provides clear wiring guidance for the production and assembly process, which helps improve production consistency and assembly efficiency, and reduces human error. In summary, this embodiment solves the problem of messy wiring inside the original enclosure, not only optimizing the internal space and heat dissipation environment, but also significantly improving the safety, reliability and ease of maintenance of the equipment.

[0048] like Figure 9 and Figure 10 As shown, optionally, the electrical control box 200 also includes a cover plate 220; the cover plate 220 is used to cover the upper opening of the box body 210 to close the upper opening; at least a portion of the inner side of the cover plate 220 has a recess 221 formed therein, and there is a safety gap between the inner side of the cover plate 220 and the upper side of the electrical control function module.

[0049] In this embodiment, by forming a recess 221 on the inner side of the cover plate 220, a "safety dome" can be created for the high-voltage components below the cover plate 220 without changing the overall height of the housing 210 after the cover plate 220 is closed. This raised space effectively increases the physical distance between the cover plate 220 and the components, thereby ensuring that even under the most demanding operating conditions, the electrical clearance and creepage distance absolutely meet or even far exceed the lower limit of safety standards. The recess 221 structure itself is a highly efficient reinforcing rib, which can significantly increase the local mechanical strength and deformation resistance of the cover plate 220. When the housing 210 is accidentally pressed, impacted, or has heavy objects placed on it, the recess 221 can provide stronger support, preventing the cover plate 220 from deforming excessively and directly pressing on the electronic components below, thereby avoiding electrical short circuits caused by mechanical damage.

[0050] Optionally, the height of the safety clearance is greater than 10 mm.

[0051] like Figure 3 As shown, in some embodiments of this utility model, the left side panel of the electrical control box 200 is provided with an air inlet 211, and the front side panel of the electrical control box 200 is provided with an air outlet 212.

[0052] In this embodiment, under the action of the fan 300, cold air from outside the outdoor unit flows from the outdoor unit's air inlet (not shown in the figure) to the air inlet 211 of the electrical control box 200, and then enters the electrical control box 200. The front panel of the electrical control box 200 usually faces the front or side-front of the outdoor unit. The lower external environmental pressure facilitates the formation of a pressure difference, which can smoothly "draw" the hot air inside the electrical control box 200 out of the box. Driven by the positive pressure (air inlet side) and negative pressure (air outlet side) outside the box, the air naturally follows the path of "air inlet on the left side - passing through the core heat-generating area inside the box - exhaust from the front side". This airflow is no longer a aimless diffusion, but is forcibly guided, passing through each heat-generating element (such as IPM module, rectifier bridge, capacitor, reactor, etc.) in sequence, realizing convective heat transfer. Furthermore, because the airflow is directional, it avoids the formation of "heat islands" by causing localized stagnation of hot air within the electrical control box 200. This ensures that the hottest air is continuously exhausted and replenished by fresh, cool air, maintaining the maximum heat exchange temperature difference and thus greatly improving heat dissipation efficiency. The fan 300 not only dissipates heat from the condenser but also provides ample airflow to the air inlet 211 of the electrical control box 200 and creates a negative pressure zone at the air outlet 212, enhancing the exchange rate of air inside and outside the electrical control box 200. This forms a synergistic heat dissipation mode of "internal active airflow and external forced suction."

[0053] Optionally, the air outlet 212 is located on the front panel of the electrical control box 200, away from the air inlet 211. Specifically, the air outlet 212 is located on the right side of the front panel of the electrical control box 200. This allows the cool air entering from the air inlet 211 to be guided in a general direction from left to right to dissipate heat from the electrical control box 200, further improving the heat dissipation effect.

[0054] like Figure 4 , Figure 5 and Figure 6 As shown, optionally, a wind deflector and rain shield 203 is installed at the air outlet 212 of the electrical control box 200, with multiple ventilation and rain shield openings 204 formed on the wind deflector and rain shield 203. The wind deflector and rain shield 203 acts as an additional physical barrier, effectively preventing rainwater or high-pressure water jets during outdoor unit washing from directly splashing into the electrical control box 200. The tortuous design of the ventilation and rain shield openings 204 can block most leaves, willow catkins, insects, and larger particles of dust and sand from entering the electrical control box 200. This not only avoids short circuits that may be caused by foreign objects but also reduces the problem of decreased heat dissipation efficiency due to dust accumulation covering components. This design greatly enhances the reliability and durability of the outdoor unit under severe weather conditions such as heavy rain, plum rains, and sandstorms, reducing the failure rate caused by weather conditions.

[0055] Optionally, the ventilation and rainproof opening 204 can face left, right, or downwards. Preferably, the ventilation and rainproof opening 204 faces downwards. This can improve the rainproof effect while ensuring ventilation.

[0056] Optionally, the ventilation and rainproof opening 204 is obtained by molding the air guide and rainproof plate 203.

[0057] In some embodiments of this utility model, the wire harness management structure 230 includes wire clips, cable tie seats, wire winding grooves or guide rails, etc.

[0058] like Figure 2 and Figure 11 As shown, in some other embodiments of the present invention, the wire harness organizing structure 230 includes a wire harness bracket, which includes two support members 231 and a guide member 232.

[0059] One end of each of the two support members 231 is connected to the side panel 201 of the housing 210. The projection of the guide member 232 on the bottom plate 202 of the housing 210 is parallel to the bottom plate 202, and both ends of the guide member 232 are connected to the other ends of the two support members 231 respectively.

[0060] In this embodiment, the guide 232, as a rigid component parallel to the base plate 202, provides a clear, suspended laying channel for the wire harness. The wire harness can be placed directly on the guide 232 or fixed below the guide 232 with cable ties, effectively preventing the wire harness from dangling, swaying, or tangling inside the enclosure, ensuring neat and uniform wiring. The guide 232 is suspended and supported by the support 231, allowing the wire harness to be arranged at a specific height along the side of the enclosure 210, rather than piling up on the base plate 202 of the enclosure 210. This not only makes the wire harness layout clearer and more intuitive, but also avoids the risk of the wire harness being damaged by screws, metal burrs, or other sharp parts on the base plate 202, while reducing contact with possible condensation or oil stains, improving long-term reliability. This design physically separates the wire harness from the base plate 202 of the enclosure 210, where the main electronic components are installed, forming a clear "wire harness layer" and "component layer". This layered layout avoids the wire harness obstructing components and heat dissipation airflow on the board, maximizing the utilization of the internal space. Since the guide 232 pre-defines a path parallel to the base plate 202, assembly workers only need to place and secure the wire harness along this "rail," significantly reducing the difficulty and skill requirements of wiring operations and improving production efficiency and consistency. During maintenance, technicians can quickly see the wire harness's path, easily loosen the fixing points, and remove the entire cable bundle from the guide 232 for inspection or replacement, making maintenance extremely convenient. Compared to simple plastic clamps, adhesive cable ties, or clips, this rigid support structure composed of the support 231 and guide 232 is more robust, reliably bearing and securing thicker, heavier power harnesses, preventing displacement or loosening under equipment vibration, and reducing failures caused by friction and stress fatigue.

[0061] Optionally, the guide 232 can be a rod. The wire harness can be secured to the rod using cable ties.

[0062] like Figure 2 As shown, in some embodiments of this utility model, a mounting sheet metal 114 is installed on the front side of the left chamber 113. The right end of the mounting sheet metal 114 is connected to the central partition 111, and the left end of the mounting sheet metal 114 is connected to the left side plate of the outer casing 100. The mounting sheet metal 114 is used to install wiring terminals. One end of the wiring harness is connected to the electrical control function module, and the other end is connected to the actuator through the wiring terminal. It should be noted that the actuator includes a fan 300, a compressor 400, and a power supply, etc.

[0063] In this embodiment, without the mounting sheet metal 114, the wiring harnesses from numerous actuators such as the compressor 400, fan 300, and sensors are typically directly and dispersedly connected to the main control board or drive board inside the electrical control box 200. During maintenance, technicians need to bend down into the box 210 to identify and unplug multiple plugs or loosen multiple terminals one by one, which is difficult due to the limited operating space and prone to errors. The purpose of the mounting sheet metal 114 is to centralize all these external wiring harness connections onto a dedicated, easily accessible interface board (terminal block). This allows all electrical connections between the electrical control box 200 and external actuators to be completed through the terminal block on this sheet metal. When maintenance of the electrical control box 200 is required, technicians only need to loosen all the screws on the terminal block in this one place to achieve a quick and complete physical separation of the electrical control section from all actuators of the entire machine, without having to touch any wiring inside the box 210. Since all external connection operations are performed on the mounting sheet metal 114 outside the enclosure 210, maintenance personnel do not need to put their hands or tools inside the electrical control box 200, thus completely avoiding the risk of accidental collisions or scratches to integrated circuits, surface-mount capacitors or precision sampling circuits when plugging and unplugging wire harnesses, and protecting the safety of core components.

[0064] like Figure 4 and Figure 5 As shown, in some embodiments of this utility model, the outdoor unit also includes a radiator 500. The radiator 500 is arranged in the right chamber 112; the bottom plate 202 of the electrical control box 200 has a mounting opening, through which the radiator 500 passes and connects to the electrical control function module.

[0065] In traditional designs, the heat generated by the electronic control module (such as IGBT) needs to be conducted to its own mounting base first, and then through interface materials such as thermal grease and insulating pads to the bottom plate 202 or side plate of the control box 200. Finally, it relies on convection between the surface of the box 210 and the air to dissipate heat. This process involves a long path and high thermal resistance.

[0066] In this embodiment, the heat-generating module is directly connected to a dedicated heat sink 500, which is directly exposed outside the electrical control box 200, i.e., in the right chamber 112. This is equivalent to establishing a high-speed heat dissipation path for the main heat source, allowing heat to be transferred almost unimpeded directly from the chip to the external cool air, resulting in low thermal resistance and improved heat dissipation efficiency. The heat sink 500 no longer relies on the slowly rising hot air inside the electrical control box 200 for cooling, but is directly placed in the mainstream cool airflow generated by the fan 300, which has a high flow rate and low temperature, accelerating the heat dissipation of the heat sink 500 itself and improving the heat dissipation performance of the electrical control box 200.

[0067] Optionally, the radiator 500 is positioned to the right or left of the fan 300, with the side of the radiator 500 closest to the fan 300 having an inclined surface. The inclined surface of the radiator 500 creates a wedge-shaped, gradually increasing physical clearance between its outermost edge and the fan blades of the fan 300. This design provides a critical safety margin, ensuring that even under extreme conditions (such as fan 300 axial eccentricity or resonance), the fan blades will not collide with the radiator 500, completely eliminating the risk of mechanical collision. Furthermore, the inclined surface also acts as a guide, ensuring that airflow can glide more smoothly over the surface of the radiator 500 rather than violently impacting it, reducing wind resistance and allowing airflow to pass through the radiator 500 more quickly, thus improving heat dissipation performance.

[0068] Preferably, the radiator 500 is arranged on the right side of the fan 300.

[0069] Optionally, the outdoor unit also includes an air guide shroud 600. The air guide shroud 600 is fitted onto the outside of the radiator 500, and the end of the air guide shroud 600 away from the fan 300 has an air inlet for supplying air into the radiator 500.

[0070] Without the air guide shroud 600, the airflow generated by the fan 300 is divergent and unorganized. Although the airflow is directed towards the radiator 500, a large amount of air chooses the path of least resistance, i.e., flowing around the gaps around the radiator 500 instead of penetrating the fin gaps of the radiator 500 itself. This airflow does not participate in heat exchange and is directly wasted. When the divergent airflow impacts the surface of the radiator 500, it forms eddies and turbulence, resulting in a significant loss of dynamic pressure head at the inlet, reducing the static pressure difference that effectively drives the air to penetrate the radiator 500 fins. By setting up the air guide shroud 600, an airflow channel is formed, "enclosing" the radiator 500 and physically isolating the possibility of airflow overflowing from all sides. This allows the air entering from the "air guide inlet" to penetrate the fin array of the radiator 500. It forces all the guided airflow to be used as completely as possible for effective heat exchange, greatly improving the utilization rate of cool air. According to the principle of fluid continuity, when the cross-sectional area of ​​the air inlet of the shroud 600 is less than or equal to the windward area of ​​the radiator 500, the airflow velocity through the fins of the radiator 500 will be maintained or even increased. Higher airflow velocity can disrupt the stagnant air boundary layer on the surface of the radiator 500, reducing thermal resistance and enhancing the convective heat transfer coefficient. Simultaneously, higher dynamic pressure means the airflow has greater power to penetrate the dense fins, ensuring that the core of the radiator 500 is also well cooled, preventing the formation of a hot zone in the center.

[0071] like Figure 5 As shown, optionally, the air guide shroud 600 includes a front air guide plate, a rear air guide plate, and an air guide base plate.

[0072] The upper ends of both the front and rear air guide plates are connected to the electrical control box 200. The front and rear ends of the air guide base plate are connected to the lower ends of the front and rear air guide plates, respectively, to enclose and form a receiving cavity; the end of the receiving cavity away from the fan 300 is the air inlet; at least part of the radiator 500 is located inside the receiving cavity; the end of the air guide base plate away from the fan 300 is folded downward to form a guide plate 611.

[0073] In this embodiment, the front guide plate, rear guide plate, guide plate base, and electrical control box 200 base plate 202 together form an air duct with a cross-sectional shape matching the radiator 500. When the airflow generated by the fan 300 flows at high speed over this downwardly inclined guide plate 611, the streamlines move closely along the plate surface. According to Bernoulli's principle, the faster the flow velocity, the lower the pressure. This creates a local low-pressure zone behind the guide plate 611 (i.e., the outlet area of ​​the accommodating cavity). This low-pressure zone generates a suction force, which not only helps to more quickly "draw away" the hot air that has passed through the radiator 500 and discharge it into the right chamber 112 environment, but more importantly, it enhances the overall driving force for cold air to be drawn in from the air inlet and penetrate the fins of the radiator 500. This makes the heat exchange efficiency of the radiator 500 higher.

[0074] The second aspect of this utility model provides an air conditioner. This air conditioner includes the outdoor unit of any of the above embodiments.

[0075] Since this embodiment includes the outdoor unit of any of the above embodiments, it has at least the advantages described above, which will not be repeated here.

[0076] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. An outdoor unit, characterized in that, include: The outer casing (100) has an internal partition (111) installed inside; the partition (111) is used to divide the inner cavity of the outer casing (100) into a right chamber (112) and a left chamber (113); the right chamber (112) is used to install a fan (300), and the left chamber (113) is used to install a compressor (400). The electrical control box (200) is located in the right chamber (112) and above the fan (300).

2. The outdoor unit according to claim 1, characterized in that, The left side panel of the electrical control box (200) is provided with an air inlet (211), and the front side panel of the electrical control box (200) is provided with an air outlet (212).

3. The outdoor unit according to claim 2, characterized in that, The air outlet (212) is located on the front side of the electrical control box (200) away from the air inlet (211).

4. The outdoor unit according to claim 2, characterized in that, A wind deflector and rain shield (203) is installed at the air outlet (212) of the electrical control box (200), and multiple ventilation and rain shield openings (204) are formed on the wind deflector and rain shield (203).

5. The outdoor unit according to claim 4, characterized in that, The ventilation and rainproof opening (204) faces downwards.

6. The outdoor unit according to claim 1, characterized in that, Also includes: A radiator (500) is arranged in the right chamber (112); the bottom plate (202) of the electrical control box (200) has a mounting opening, through which the radiator (500) passes and connects to the electrical control function module.

7. The outdoor unit according to any one of claims 1 to 6, characterized in that, The base plate (202) of the electrical control box (200) is installed on the fan bracket. The rear side plate of the electrical control box (200) is connected to the upper end of the rear side wall of the condenser through the connecting sheet metal (115). The left side plate of the electrical control box (200) is connected to the middle partition (111). The right side plate of the electrical control box (200) is attached to the upper end of the left side wall of the condenser through the overlapping sheet metal (116).

8. The outdoor unit according to claim 7, characterized in that, There is a reserved gap (117) between the rear panel of the electrical control box (200) and the rear wall of the condenser.

9. The outdoor unit according to claim 7, characterized in that, The base plate (202) of the electrical control box (200) includes: Right bottom plate (215), left bottom plate (216) and middle bottom plate (217); The upper end of the right support plate (218) is connected to the right end of the middle bottom plate (217), and the lower end of the right support plate (218) is connected to the left end of the right bottom plate (215). The upper end of the left support plate (219) is connected to the left end of the middle base plate (217), and the lower end of the left support plate (219) is connected to the right end of the left base plate (216).

10. An air conditioner, characterized in that, Includes the outdoor unit as described in any one of claims 1 to 9.

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