Air conditioner outdoor unit

Abstract

The utility model provides an air conditioner outdoor unit relates to air conditioning technical field. Air conditioner outdoor unit includes: the casing, the casing includes the air inlet; the baffle is arranged in the casing is used for separating the casing internal space into the press chamber and the fan chamber, the outdoor heat exchanger carries out heat exchange to the outdoor air that flows in through air inlet, the outdoor fan is located in the fan chamber, and the outdoor fan rotates makes the negative pressure area in the fan chamber, first through -going portion is located on the baffle, and first through -going portion is located at the air outlet side of outdoor heat exchanger, second through -going portion is located on the casing, exhaust pipe is worn in second through -going portion, and the gas -discharge end of exhaust pipe is communicated with negative pressure area through first through -going portion, and the gas -intake end of exhaust pipe is communicated with indoor environment, the damper assembly is used for the air flow path between the fan chamber and indoor environment is opened or is cut off. In the utility model, the indoor waste gas does not pass through outdoor heat exchanger, reduces the air resistance, effectively improves the exhaust volume of indoor waste gas.

Description

Technical Field

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

[0002] After air conditioning has been running for an extended period, the oxygen content and humidity in the indoor air will decrease, causing users to experience symptoms such as dizziness and chest tightness. Therefore, many families choose to use a fresh air system to bring outdoor air into the indoor environment or an exhaust system to expel indoor stale air to the outside.

[0003] The fans in existing fresh air / exhaust systems are installed on the indoor units of air conditioners. When fresh air needs to be introduced or exhausted, the fans must be turned on. During quiet sleep periods, the noise from their operation can disrupt sleep quality. Furthermore, the installation location of the indoor unit depends on the space available. In some cases, the distance between the indoor unit and the outdoor environment is relatively long, resulting in long air ducts for intake / exhaust. The longer the duct, the less air is drawn in / exhausted, failing to effectively improve indoor air quality.

[0004] In related technologies, a negative pressure generated by the outdoor unit's fan draws indoor exhaust gas to the outdoor unit for discharge. In this type of solution, one end of the exhaust pipe is connected to the indoor environment, while the other end is located at the air inlet of the outdoor unit. The indoor exhaust gas needs to pass through the outdoor heat exchanger. Adding a pipe structure at the air inlet easily leads to frost formation when the pipe structure contacts the outdoor heat exchanger. Furthermore, the outdoor heat exchanger, composed of dense fins and copper tubes, exhibits significant air resistance. Under negative pressure, the indoor exhaust gas in the exhaust pipe must force its way through the outdoor heat exchanger, resulting in reduced airflow and a significant decrease in exhaust efficiency. Additionally, indoor exhaust gas contains oil fumes, dust, and moisture, which easily adhere to the fin surface of the outdoor heat exchanger, reducing heat exchange efficiency. Utility Model Content

[0005] This utility model aims to at least partially solve one of the technical problems in related technologies. Therefore, This utility model provides an outdoor unit for an air conditioner, which includes: The housing includes an air inlet and a first side panel; A partition is provided inside the housing to divide the internal space of the housing into a compressor chamber and a fan chamber, and the first side plate is used to form a side wall defining the compressor chamber; An outdoor heat exchanger is installed inside the casing to exchange heat with outdoor air flowing in through the air inlet. An outdoor fan is installed inside the fan cavity, and the rotation of the outdoor fan causes the fan cavity to form a negative pressure zone. A first through section is provided on the partition plate, and the first through section is located on the air outlet side of the outdoor heat exchanger; The second through section is provided on the first side plate; An exhaust pipe is installed in the second through section. The exhaust pipe's outlet end is connected to the negative pressure zone through the first through section, and the exhaust pipe's inlet end is connected to the indoor environment. A damper assembly, located in the exhaust pipe, is used to open or close the airflow path between the fan chamber and the indoor environment.

[0006] The above technical solution has the following advantages or beneficial effects: By configuring the exhaust pipe with the first through section, the second through section, and the damper assembly, the outdoor unit of the air conditioner utilizes the negative pressure generated in the fan cavity by its own outdoor fan to directly draw indoor exhaust gas to the outside through the exhaust pipe, eliminating the need for a separate exhaust fan and achieving zero-noise exhaust gas discharge. By placing the first through section on the air outlet side of the outdoor heat exchanger, indoor exhaust gas does not pass through the outdoor heat exchanger, which not only reduces air outlet resistance and increases the exhaust volume of indoor exhaust gas, but also prevents dust and oil mist from the indoor exhaust gas from adhering to the fins of the outdoor heat exchanger, ensuring the heat exchange efficiency of the outdoor heat exchanger and reducing user cleaning costs.

[0007] According to an embodiment of this disclosure, in the height direction of the casing, the distance between the center of the outdoor fan and the center of the first through portion is L, where L satisfies: L≤r, L≥0.2r, and r is the radius of the outdoor fan; the end of the outdoor fan hub near the air outlet is defined as the hub tail end, and in the axial direction of the outdoor fan, the first through portion is located in the negative pressure zone between the outdoor heat exchanger and the hub tail end.

[0008] The above technical solution has the following advantages or beneficial effects: When L > r, the first through-section is located outside the rotation area of ​​the outer edge of the outdoor fan blades in the height direction of the casing, far from the main negative pressure area, resulting in insufficient negative pressure intensity at its location, affecting the amount of indoor exhaust gas extracted. When L < 0.2r, the first through-section is too close to the hub in the height direction of the casing, resulting in low negative pressure intensity and poor extraction effect of indoor exhaust gas. By setting L within the range of 0.2r to r, sufficient negative pressure intensity is ensured at the first through-section, improving the extraction efficiency and effect of indoor exhaust gas.

[0009] According to an embodiment of this disclosure, the housing includes a front panel and a first side panel, the air outlet is opened on the front panel, the first side panel is connected to the front panel, the first side panel includes a first plate body disposed opposite to the front panel, the first plate body forming a side wall defining the compressor cavity; wherein, the height of the center of the first through portion is lower than the height of the center of the outdoor fan, and the second through portion is opened on the first plate body.

[0010] The above technical solution has the following advantages or beneficial effects: when the height of the center of the first through part is lower than the height of the center of the outdoor fan, the second through part is set on the first plate, so that the second through part is located on the rear side of the casing, which shortens the pipe size between the first through part and the second through part, improves the appearance of the outdoor unit of the air conditioner, and facilitates the wall-penetrating operation of the exhaust pipe.

[0011] According to an embodiment of this disclosure, the height of the center of the first through portion is higher than the height of the center of the outdoor fan, the housing includes a top plate, the second through portion is disposed through the top plate along the thickness direction of the top plate, and the second through portion is located at the top of the compressor cavity.

[0012] The above technical solution has the following advantages or beneficial effects: when the center height of the first through section is higher than the center height of the outdoor fan, the second through section is set on the top plate, which shortens the pipe size between the first through section and the second through section, and can also effectively avoid the compressor at the bottom, improving the convenience of pipe routing.

[0013] According to an embodiment of this disclosure, the exhaust pipe includes: Two connectors are respectively inserted into the first through portion and the second through portion; The first pipe section is located inside the press chamber, and its two ends are respectively connected to the two connectors to connect the two connectors.

[0014] The above technical solution has the following advantages or beneficial effects: by segmenting the exhaust pipe, segmented assembly can be achieved. Specifically, the first pipe segment is pre-installed in the factory, and during on-site installation, only the second pipe segment, which connects to the outdoor environment and the second through section, needs to be laid through the wall, reducing installation difficulty and the risk of transportation damage.

[0015] According to an embodiment of this disclosure, one of the two connectors is equipped with the damper assembly.

[0016] The above technical solution has the following advantages or beneficial effects: the connector is a rigid component, and the damper assembly is installed in the connector, which improves the reliability and stability of the damper assembly.

[0017] According to an embodiment of this disclosure, the damper assembly includes two dampers, which are rotatably connected to the connector via a rotating shaft. The rotation axis of the dampers extends along the height direction of the housing, and the rotation directions of the two dampers are opposite to each other. The dampers swing under negative pressure to open the airflow channel within the connector.

[0018] The above technical solution has the following advantages or beneficial effects: by setting two dampers whose rotation axis extends along the height direction of the casing, the damper area is reduced, and the combined effect of gravity and negative pressure is fully utilized. This not only improves the responsiveness of the damper in guiding the airflow channel, but also eliminates the need to use a drive component to drive the damper to swing, thus reducing costs.

[0019] According to an embodiment of this disclosure, a limiting portion is provided on the inner peripheral wall of the connector where the damper assembly is located. The limiting portion is disposed away from the negative pressure zone relative to the damper to restrict the damper from rotating in the opposite direction under negative pressure.

[0020] The above technical solution has the following advantages or beneficial effects: by setting a limiting part on the side of the damper that is far away from the negative pressure zone, the damper can only swing in the direction of the negative pressure zone, eliminating the possibility of reverse opening, thereby ensuring that the airflow in the exhaust pipe always flows from the room to the outside and preventing the phenomenon of "backflow".

[0021] According to an embodiment of this disclosure, the damper assembly further includes an elastic reset member, which is sleeved on the rotating shaft. One end of the elastic reset member is connected to the connector, and the other end is connected to the damper. The elastic reset member drives the damper to close to block the airflow channel when no external force is applied. Under negative pressure, the damper overcomes the elastic force of the elastic reset member and swings to open the airflow channel.

[0022] The above technical solution has the following advantages or beneficial effects: by setting an elastic reset component, it can automatically drive the damper to close in the absence of negative pressure, thus preventing backflow and the intrusion of insects and rodents into the indoor environment. The structure is simple and highly reliable.

[0023] According to an embodiment of this disclosure, one of the damper and the connector is provided with the rotating shaft, and the other is provided with a sleeve portion that engages with the rotating shaft, wherein the sleeve portion and the rotating shaft are rotatable relative to each other.

[0024] The above technical solution has the following advantages or beneficial effects: the rotation function of the damper can be realized by directly connecting the rotating shaft and the sleeve, without the need for additional bearings, reducing the number of parts, simplifying the assembly process, and improving production efficiency. The rotating shaft and the sleeve can be integrally formed with the damper or connecting parts, reducing processing steps and material costs, making it suitable for mass production.

[0025] According to an embodiment of this disclosure, the exhaust pipe further includes a second pipe segment located in an outdoor environment. The connector in the first through section has a first interface, and the connector in the second through section has a second interface and a third interface that are connected to each other. The first interface and the second interface are respectively connected to both ends of the first pipe segment, and the third interface is connected to one end of the second pipe segment.

[0026] The above technical solution has the following advantages or beneficial effects: the standardized interface on the connector can realize the rapid installation of the first pipe section and the second pipe section, effectively improving the installation efficiency.

[0027] According to an embodiment of this disclosure, the diameter of the first pipe segment is d, where d ≥ 40 mm and d ≤ 100 mm.

[0028] The above technical solution has the following advantages or beneficial effects: if d is greater than 100mm, it easily compresses the space of the compressor chamber and may cause spatial conflicts with other components. If d is less than 40mm, it will affect the exhaust volume of indoor exhaust gas. Setting d within the range of 40mm to 100mm makes the diameter of the first pipe section moderate, allowing it to flexibly navigate within the existing gaps in the compressor chamber without widening the machine body or moving parts, thus providing good spatial compatibility. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the appearance of an outdoor unit of an air conditioner according to one embodiment of the present disclosure; Figure 2 This is a schematic diagram of the appearance of an outdoor unit of an air conditioner from another perspective according to one embodiment of the present disclosure; Figure 3 This is a schematic diagram of the internal structure of an outdoor unit of an air conditioner according to an embodiment of this disclosure; Figure 4 This is a partial exploded view of an outdoor unit of an air conditioner according to one embodiment of this disclosure; Figure 5 yes Figure 4 A magnified view of a portion at point A; Figure 6 This is a structural schematic diagram of the outdoor unit of an air conditioner, omitting the first pipe section and connecting parts, according to one embodiment of this disclosure; Figure 7 This is a structural diagram of an embodiment of the air conditioner outdoor unit, omitting the first pipe section; Figure 8 This is a structural schematic diagram of the partition according to one embodiment of the present disclosure; Figure 9 This is a schematic diagram of the damper assembly in the open state according to one embodiment of the present disclosure; Figure 10 This is a structural schematic diagram of a damper assembly disposed in a first connector according to an embodiment of the present disclosure; Figure 11 yes Figure 10 A sectional view; Figure 12 This is a structural schematic diagram of the first connector from another perspective according to an embodiment of the present disclosure; Figure 13 yes Figure 12 Sectional view at AA; Figure 14 This is an assembly diagram of the first connector and the first side plate according to an embodiment of this disclosure; Figure 15 This is a structural schematic diagram of the damper assembly disposed in the second connector according to another embodiment of the present disclosure; Figure 16 This is a rear view of the internal structure of the outdoor unit of an air conditioner according to an embodiment of the present disclosure; Figure 17 This is a top view of the internal structure of the outdoor unit of an air conditioner according to an embodiment of this disclosure.

[0030] In the above figures: outdoor air conditioner unit 100; casing 1; air inlet 11; air outlet 12; first side plate 13; first plate 131; second plate 132; second through section 133; fan cavity 14; compressor cavity 15; chassis 16; second side plate 17; partition 2; first through section 21; outdoor fan 3; outdoor heat exchanger 4; first pipe section 5; first connector 6; first interface 61; second connector 7; second interface 71; second interface 72; damper assembly 8; damper 81; elastic reset component 82; rotating shaft 83; sleeve part 84; limiting part 85; compressor 9. Detailed Implementation

[0031] The present invention 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.

[0032] In this utility model, the reference to "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it a mutually exclusive, independent, or alternative embodiment. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described in this application may be combined with other embodiments without conflict.

[0033] In the description of this utility model, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "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 utility model 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 utility model.

[0034] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

[0035] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" 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 direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0036] The outdoor unit 100 of the air conditioner provided in this utility model can have various implementation forms, as detailed below. Figures 1-17 Describe the outdoor unit 100 of the air conditioner.

[0037] It should be noted that the outdoor unit 100, as the outdoor unit of the air conditioner, is usually located outdoors and exchanges heat with the outdoor environment to carry indoor heat to the outside. The air conditioner also includes an indoor unit, while the outdoor unit is located indoors and exchanges heat with the indoor environment.

[0038] refer to Figure 1 In one illustrative embodiment of the air conditioner outdoor unit 100 provided by this utility model, the air conditioner outdoor unit 100 includes a housing 1, which is installed outdoors and forms the overall appearance of the air conditioner outdoor unit 100.

[0039] The housing 1 defines an internal space for installing and securing the various components of the outdoor unit 100 of the air conditioner. The housing 1 has a top end and a bottom end, which are the two ends of the housing 1 that are positioned opposite each other in the height direction.

[0040] Continue to refer to Figure 1 , Figure 2 The housing 1 may include an air inlet 11. The air inlet 11 is connected to the receiving space and serves as the inlet for external air to flow into the housing 1.

[0041] The housing 1 may include an air outlet 12. The air outlet 12 is connected to the receiving space and serves as the outlet for the heat-exchanged air to flow out of the housing 1.

[0042] Outdoor air from outside the casing 1 enters the casing 1 through the air inlet 11 and is finally exhausted to the outside through the air outlet 12.

[0043] In some embodiments of this application, reference is made to Figure 1The outdoor unit 100 of the air conditioner may include an air outlet grille, which is connected to the housing 1 and located at the air outlet 12 to serve both the functions of air rectification and guidance and safety protection.

[0044] It should be noted that the directions described in the text are based on the direction in which the user faces the outdoor unit 100 of the air conditioner. Specifically, the side of the outdoor unit 100 facing the user when in use is defined as the front side, and the opposite side is defined as the rear side. The left and right sides are distinguished by the direction in which the user faces the outdoor unit 100 of the air conditioner.

[0045] refer to Figure 4 The outdoor unit 100 of the air conditioner may include a partition 2. The partition 2 is disposed in the housing and is used to divide the accommodating space inside the housing 1 into a fan chamber 14 and a compressor chamber 15.

[0046] The partition 2 is disposed inside the housing 1 along the height direction of the housing. In this embodiment, the fan chamber 14 and the compressor chamber 15 are located on the left and right sides of the housing 1, respectively.

[0047] In some embodiments of this application, the air inlet 11 may be located on the rear side of the housing 1, and the air outlet 12 may be located on the front side of the housing 1. In this embodiment, the air outlet 12 is located on the front panel of the housing 1.

[0048] Of course, in some other embodiments, the air inlet 11 may also be located on the side of the housing 1, that is, the air inlet 11 may be located on the rear side and / or the side of the housing 1. The air inlet 11 is connected to the fan cavity 14.

[0049] refer to Figure 6 The housing 1 may include a second side plate 17, which forms one end of the housing 1 along its length. An air inlet 11 is located on the second side plate 17.

[0050] refer to Figure 5 The housing 1 may include a chassis 16. The chassis 16 serves as the base of the outdoor unit 100 of the air conditioner, providing mounting positions for components such as the compressor 9, outdoor heat exchanger 4, and outdoor fan 3. The chassis 16 forms the bottom end of the housing 1 and is used to support the partition.

[0051] The housing 1 may include a first side plate 13, which forms a side wall defining the compressor cavity 15. The first side plate 13, the second side plate 17, the chassis 16, and the top plate of the housing 1 together form an air inlet 11 on the rear side of the housing 1.

[0052] In some embodiments of this application, the outdoor unit 100 of the air conditioner may include an outdoor heat exchanger 4, which is disposed inside the fan cavity 14 for heat exchange with the air inside the casing 1. The outdoor heat exchanger 4 is located inside the air inlet 11.

[0053] In some embodiments of this application, the outdoor unit 100 of the air conditioner may include an outdoor fan 3, which is disposed within a fan cavity 14. The rotation of the outdoor fan 3 causes a negative pressure zone to be formed within the fan cavity 14. The outdoor fan 3 may be an axial flow fan.

[0054] refer to Figure 1 , Figure 3 The outdoor fan 3 is positioned relative to the outdoor heat exchanger 4 near the air outlet 12. In other words, the outdoor fan 3 is located on the side of the outdoor heat exchanger 4 away from the air inlet 11.

[0055] In this embodiment, the outdoor fan 3 is installed between the outdoor heat exchanger 4 and the air outlet 12. Under the action of the outdoor fan 3, outdoor air enters the fan chamber 14 through the air inlet 11. The outdoor air exchanges heat with the outdoor heat exchanger 4 in the fan chamber 14. The outdoor air after heat exchange is discharged from the casing 1 through the air outlet 12 under the drive of the outdoor fan 3.

[0056] The outdoor unit 100 of the air conditioner may include a compressor 9, which is located inside the compressor chamber 15.

[0057] The air conditioner may include a throttling device for limiting airflow. The throttling device may be located in the outdoor unit 100 or the indoor unit of the air conditioner.

[0058] An air conditioner may include a refrigerant circuit. A refrigerant circuit is formed by connecting pipes between the indoor unit and the outdoor unit 100 of the air conditioner. Through this refrigerant circuit, the air conditioner allows the refrigerant to circulate sequentially through the compressor 9, condenser, throttling device, and evaporator, enabling it to perform indoor cooling or heating.

[0059] An air conditioner may include an indoor unit, which includes an indoor heat exchanger.

[0060] The indoor heat exchanger and outdoor heat exchanger 4 are used as condensers or evaporators. When the indoor heat exchanger is used as a condenser, the air conditioner is used as a heater in heating mode; when the indoor heat exchanger is used as an evaporator, the air conditioner is used as a cooler in cooling mode.

[0061] Refrigeration and heating cycles include compression, condensation, expansion, and evaporation processes. They provide cooling or heating to the indoor space through the heat absorption and release processes of the refrigerant, thereby regulating the temperature of the indoor space.

[0062] Compressor 9 compresses the refrigerant gas into a high-temperature and high-pressure state and discharges the compressed refrigerant gas, which then flows into the condenser.

[0063] The condenser condenses the compressed, high-temperature, high-pressure gaseous refrigerant into a liquid refrigerant, and the heat is released to the surrounding environment through the condensation process.

[0064] The liquid refrigerant flowing out of the condenser enters the throttling device, which expands the high-temperature, high-pressure liquid refrigerant after condensation in the condenser into a low-pressure liquid refrigerant.

[0065] The low-pressure liquid refrigerant flowing out of the throttling device enters the evaporator. As the liquid refrigerant flows through the evaporator, it absorbs heat and evaporates into a low-temperature, low-pressure refrigerant gas. The low-temperature, low-pressure refrigerant gas returns to the compressor 9.

[0066] The evaporator achieves its cooling effect by exchanging heat with the material being cooled using the latent heat of refrigerant evaporation. Throughout this entire cycle, the air conditioner regulates the temperature of the indoor space.

[0067] In some embodiments of this application, the outdoor unit 100 of the air conditioner may include an exhaust pipe for connecting the indoor environment with the negative pressure zone inside the outdoor unit 100 of the air conditioner.

[0068] When the outdoor unit 100 of the air conditioner is working, the negative pressure generated by the operation of the outdoor fan 3 can draw the indoor exhaust gas into the fan chamber 14 and discharge it, thereby realizing the discharge of indoor exhaust gas and avoiding the need to set up an exhaust fan in the indoor unit of the air conditioner to discharge indoor exhaust gas to the outside, thus reducing the energy consumption of the whole unit.

[0069] At the same time, the air on the indoor side is drawn out to form a negative pressure, which allows the indoor side to draw in fresh air from the outside space through gaps such as doors and windows, improving the user experience. This avoids the need to set up a separate fresh air unit to send fresh air into the indoor side, simplifies the structure of the air conditioner indoor unit, reduces energy consumption and cost, and also reduces operating noise.

[0070] In this embodiment, the exhaust pipe can pass directly from the outside wall to the indoor environment, regardless of the installation location of the indoor air conditioning unit. This can shorten the length of the exhaust pipe, thereby reducing the energy consumption within the exhaust pipe and effectively increasing the exhaust air volume.

[0071] In some embodiments of this application, reference is made to Figure 3 , Figure 6 The outdoor unit 100 of the air conditioner may include a first through part 21, which is disposed on the partition 2 to connect the compressor chamber 15 and the negative pressure zone (fan chamber 14).

[0072] refer to Figure 6 The first through section 21 is located on the air outlet side of the outdoor heat exchanger 4, and the air outlet end of the exhaust pipe is connected to the negative pressure zone through the first through section 21. The exhaust pipe can exhaust air to the air outlet side of the outdoor heat exchanger 4 under the operation of the outdoor fan 3.

[0073] Continue to refer to Figure 6The outdoor unit 100 of the air conditioner may include a second through section 133, which is disposed on the first side plate 13 and is used to connect the compressor chamber 15 with the outdoor environment. The exhaust pipe is inserted through the second through section 133, and the air inlet end of the exhaust pipe is connected to the indoor environment to extract indoor exhaust gas under negative pressure.

[0074] In this embodiment, by setting the exhaust pipe with the first through part 21 and the second through part 133, when the outdoor unit 100 of the air conditioner is installed, the exhaust pipe only needs to pass through the wall, and is decoupled from the position of the indoor unit of the air conditioner. The path is short and the resistance is small, and the exhaust volume is increased at the same outdoor fan speed 3.

[0075] By placing the first through section 21 on the air outlet side of the outdoor heat exchanger 4, indoor exhaust gas can directly enter the negative pressure zone without passing through the outdoor heat exchanger 4, reducing air outlet resistance and significantly increasing the exhaust volume of indoor exhaust gas at the same outdoor fan speed 3. Simultaneously, it prevents dust and oil mist from the indoor exhaust gas from adhering to the fins of the outdoor heat exchanger 4, ensuring the heat exchange efficiency of the outdoor heat exchanger 4 and reducing the frequency and cost of cleaning for users.

[0076] In some embodiments of this application, reference is made to Figure 17 The end of the hub 31 of the outdoor fan 3 near the air outlet 12 is defined as the hub tail end 312. In the axial direction of the outdoor fan 3, the first through part 21 is located in the negative pressure zone between the outdoor heat exchanger 4 and the hub tail end 312 of the outdoor fan 3.

[0077] The area between the outdoor fan 3 and the air outlet 12 is the air outlet side of the outdoor fan. The outdoor fan 3 blows the heat-exchanged airflow out through the air outlet 12. The airflow between the hub tail end 312 and the air outlet 12 is easily "drawn" back to the front of the hub 31, forming a local backflow, resulting in a lower negative pressure intensity and affecting the indoor exhaust gas extraction effect.

[0078] The negative pressure zone between the outdoor heat exchanger 4 and the hub end 312 of the outdoor fan 3 is located at the air intake negative pressure core of the outdoor fan. The static pressure is consistently lower than atmospheric pressure with a gentle gradient, and the negative pressure throughout the area is stable and strong. By placing the first through section 21 in this area, the exhaust pipe is always subjected to unidirectional suction, and the power for extracting indoor exhaust gas remains sufficient, improving the exhaust effect of indoor exhaust gas and avoiding the need to increase the outdoor fan speed to increase the amount of indoor exhaust gas discharged, thereby reducing energy consumption and noise.

[0079] In some embodiments of this application, reference is made to Figure 16 In the height direction of the casing 1, the distance between the center of the outdoor fan 3 and the center of the first through part 21 is L, which satisfies: L≤r, L≥0.2r. Where r is the radius of the outdoor fan.

[0080] It should be noted that the radius of the outdoor fan 3 is the distance from the tip (outermost edge) of the blade 32 to the center of rotation of the outdoor fan 3.

[0081] When L > r, the first through part 21 is located outside the outer edge rotation area of ​​the blade 31 of the outdoor fan 3 in the height direction of the casing 1, far away from the main negative pressure area, resulting in insufficient negative pressure intensity at its location, affecting the amount and effect of indoor exhaust gas extraction.

[0082] When L < 0.2r, the first through section 21 is too close to the hub 31 in the height direction of the housing 1. The blades in the vicinity of the hub 31 are short and have low linear velocity, which cannot guarantee the negative pressure strength of the first through section 21, affecting the amount and effect of indoor exhaust gas extraction.

[0083] When 0.2r≤L≤r, the first through section 21 falls into the high negative pressure core, which can make full use of the radial pressure gradient generated by the fan rotation to form a sufficiently strong negative pressure and improve the extraction efficiency of indoor exhaust gas. The indoor exhaust gas is drawn away under the drive of higher negative pressure intensity, and even when the outdoor fan 3 is running at low speed, it can obtain sufficient suction power.

[0084] In this embodiment, by limiting the distance L and the negative pressure area where the first through part 21 is located in the axial direction of the outdoor fan, the first through part 21 is locked in the core area of ​​the negative pressure field of the outdoor fan 3 in the two degrees of freedom of axial and radial directions, which is the "highest intensity and smallest fluctuation". This reduces the sensitivity of the exhaust gas extraction volume to the speed change of the outdoor fan 3, and a more stable and larger indoor exhaust gas suction force can be obtained with a smaller outdoor fan 3 speed.

[0085] In some embodiments of this application, L satisfies: L≤0.7r, L≥0.5r. By setting the distance L to any value between 0.5r and 0.7r, the center of the first through-part 21 is located in the high-intensity region of the negative pressure field of the outdoor fan 3 in the height direction of the casing 1, thus avoiding the need to increase the speed of the outdoor fan 3 to maintain the exhaust volume due to insufficient negative pressure intensity, and reducing energy consumption and noise.

[0086] refer to Figure 6 The first side plate 13 may include a second plate 131, which forms one end of the housing 1 in the length direction.

[0087] The first side panel 13 may include a first plate body 132, which is connected to a second plate body 131. The second plate body 131 is disposed opposite to the front panel 18.

[0088] It should be noted that the second through section 151 can be located on the first plate 132 or on the second plate 131, and the specific location can be set according to the specific product layout.

[0089] For example, refer to Figure 6 The second through portion 151 is provided on the first plate 132. This arrangement makes the second through portion 151 located on the rear side of the housing 1, which not only avoids the valve assembly on the second plate 131 from interfering with the connection of the exhaust pipe, but also improves the appearance.

[0090] In some embodiments of this application, reference is made to Figure 14 When the height of the center of the first through section 21 is lower than the height of the center of the outdoor fan 3, the second through section 151 can be provided on the first plate 132.

[0091] Specifically, when the height of the center of the first through section is lower than the height of the center of the outdoor fan, the second through section 151 is set on the first plate, so that the second through section 151 is located on the rear side of the casing 1, which improves the appearance of the outdoor unit of the air conditioner and facilitates the wall-penetrating operation of the exhaust pipe.

[0092] The second through section 151 can be located close to the bottom of the first plate 132, which shortens the pipe size between the first through section 21 and the second through section 151.

[0093] In some embodiments of this application, when the height of the center of the first through portion 21 is higher than the height of the center of the outdoor fan 3, the second through portion 151 can be provided on the top plate 19. The second through portion 151 extends through the top plate 19 along its thickness direction and is located at the top of the compressor chamber 15. In this embodiment, setting the height of the center of the first through section 21 to be higher than the height of the center of the outdoor fan 3 allows the pipe connected to it to effectively avoid the compressor 9 at the bottom. At this time, placing the second through section 151 on the top plate 19 shortens the pipe size between the first through section 21 and the second through section 151, improving the ease of pipe routing.

[0094] In some embodiments of this application, reference is made to Figure 3 The exhaust pipe may include a first pipe section 5, which is located inside the compressor chamber 15 and is used to connect the first through section 21 and the second through section 133.

[0095] The first pipe section 5 can be a flexible hose, which can easily avoid various components in the compressor chamber 15 during pre-installation and reduce the assembly damage rate.

[0096] The exhaust pipe may include a second pipe section (not shown), which is located in the outdoor environment and is used to connect the second through section 133 with the indoor environment. One end of the second pipe section is connected to the second through section 133, and the other end only needs to extend through the wall into the indoor environment.

[0097] In this embodiment, the exhaust pipe is segmented to achieve segmented assembly. Segmented assembly allows the first pipe segment 5 to be pre-installed in the factory, and the exhaust pipe can be connected on site simply by laying the second pipe segment through the wall, reducing installation difficulty and the risk of transportation damage.

[0098] In some embodiments of this application, the exhaust pipe may include two connectors, which are respectively disposed in the first through portion 21 and the second through portion 133.

[0099] The first pipe section 51 is connected to two connectors at both ends to connect the two connectors, and one end of the second pipe section is connected to the connector at the second through section 133.

[0100] In this embodiment, by setting two connectors, the assembly efficiency of the first pipe section and the second pipe section is improved.

[0101] Specifically, the connector in the first through section 21 is defined as the first connector 6, referring to... Figure 6 , Figure 7 The first connecting member 6 is disposed on the partition 2, and the first connecting member 6 has a first interface 61 communicating with the first through portion 21. (Refer to...) Figure 7 The first interface 61 is located inside the press chamber 15 and is connected to one end of the first pipe section 5.

[0102] The connector in the second through section 133 is defined as the second connector 7, and the second connector 7 is located in the second through section 133. The second connector 7 is connected to the first side plate 13.

[0103] refer to Figure 7 The second connector 7 has a second interface 71, which is located inside the press chamber 15 and is connected to the other end of the first pipe section 5.

[0104] The second connector 7 has a third interface 72, which is located in an outdoor environment and is connected to the second interface 71. The third interface 72 is connected to one end of the second pipe segment.

[0105] For example, the first connector 6 and the second connector 7 can be flanges, which can enable quick insertion or clamping of the first pipe section 5 and the second pipe section, facilitating disassembly and maintenance while ensuring that the exhaust pipe does not leak air.

[0106] In this embodiment, both the first connector 6 and the second connector 7 provide standardized interfaces. The standardized interfaces allow the first pipe segment 5 and the second pipe segment to be installed independently and quickly in the factory and on-site, respectively, thereby improving installation efficiency.

[0107] In some embodiments of this application, the outdoor unit 100 of the air conditioner may include a damper assembly 8, which is used to open or close the airflow path between the fan cavity 14 and the indoor environment.

[0108] For example, one of the two connectors is equipped with a damper assembly 8. (See reference) Figure 8 The damper assembly 8 can be disposed in the first connector 6. Of course, in some other embodiments, refer to... Figure 15 The damper assembly 8 can also be located in the second connector 7.

[0109] Specifically, the connector is a rigid component, which provides reliable installation space and swing space for the damper assembly 8. By installing the damper assembly 8 in the connector, the reliability and stability of the damper assembly 8 are improved, and the installation of the damper assembly 8 is facilitated. At the same time, it eliminates technical problems such as eccentricity, jamming or incomplete closure caused by bending or pulling of the first pipe section 551 and the second pipe section when installed in the pipe section.

[0110] In some embodiments of this application, the damper assembly 8 can be configured to: guide the airflow path between the fan cavity 14 and the indoor environment under negative pressure; and block the airflow path between the fan cavity 14 and the indoor environment under non-negative pressure.

[0111] In this embodiment, the damper assembly 8 opens or closes according to the negative pressure state, eliminating the need for additional drive components and reducing costs. When negative pressure is established, the damper assembly 8 opens immediately, drawing indoor exhaust gas to the outside. When the outdoor fan 3 stops working, the damper assembly 8 closes immediately, eliminating any delayed backflow and providing one-step protection against insects, dust, and odors.

[0112] In some embodiments of this application, reference is made to Figure 10 The damper assembly 8 may include two dampers 81.

[0113] The damper 81 is rotatably connected to the connector via a rotating shaft 83, and the axis of rotation of the damper 81 extends along the height direction of the housing 1. Under negative pressure, the damper 81 swings to open the airflow channel within the connector.

[0114] In this embodiment, the two dampers 81 rotate in opposite directions.

[0115] In some embodiments of this application, a limiting part 85 is provided on the inner peripheral wall of the connector where the damper assembly 8 is located. The limiting part 85 is used to restrict the damper 81 from rotating in one direction under negative pressure. The limiting part 85 is located away from the negative pressure area relative to the damper 81.

[0116] By setting a limiting part 85 on the side of the damper 81 that is far away from the negative pressure zone, the damper 81 can only swing in the direction of the negative pressure zone, eliminating the possibility of reverse opening, thereby ensuring that the airflow in the exhaust pipe always flows from the room to the outside and preventing the "backflow" phenomenon.

[0117] In some embodiments of this application, reference is made to Figure 13 The damper assembly 8 may include an elastic reset member 82, which is sleeved on the rotating shaft 83. One end of the elastic reset member 82 is connected to the connector, and the other end of the elastic reset member 82 is connected to the damper 81.

[0118] In this process, the elastic reset member 82 drives the damper 81 to close to block the airflow channel when there is no external force, and the damper 81 overcomes the elastic force swing of the elastic reset member 82 under negative pressure to open the airflow channel.

[0119] For example, the elastic reset member 82 may be a helical spring, the rotational force and torque of which cause the damper 81 to abut against the limiting part 85 to block the airflow passage.

[0120] In this embodiment, when the damper assembly 8 is in the closed state, the damper 81 abuts against the limiting part 85.

[0121] In some embodiments of this application, one of the dampers 81 and the connector is provided with a pivot 83. For example, see... Figure 13 The rotating shaft 83 is mounted on the connector. There are four rotating shafts 83, and the rotating shafts 83 can be integrally injection molded with the connector.

[0122] The damper 81 and another component in the connector are provided with a sleeve 84. (See reference) Figure 10 , Figure 13 The damper 81 is provided with a sleeve part 84. The rotating shaft 83 is sleeved with the sleeve part 84, and the sleeve part 84 and the rotating shaft 83 can rotate relative to each other.

[0123] In this embodiment, the rotation function of the damper 81 can be realized by directly connecting the rotating shaft 83 and the sleeve part 84, without the need for additional bearings, reducing the number of parts, simplifying the assembly process, and improving production efficiency.

[0124] refer to Figure 13 The damper 81 is semi-circular, with a sleeve 84 located at both ends of the damper 81. The elastic reset member 82 is located inside the sleeve 84 at one end of the damper 81, preventing the elastic reset member 82 from being exposed in the airflow channel. This prevents oil and dust from directly adhering to the elastic reset member 82, which could cause the damper 81 to jam or fail during reset. At the same time, the sleeves at both ends of the semi-circular damper form symmetrical fulcrums, ensuring that the damper 81 swings smoothly and resets reliably.

[0125] In this embodiment, the sleeve 84 can be integrally injection molded with the damper 81, reducing processing steps and material costs, and is suitable for mass production.

[0126] In some embodiments of this application, the diameter of the first pipe section 5 is d, which satisfies: d≥40mm, d≤100mm, so as to balance the exhaust capacity of indoor exhaust gas and the flexibility of pipe routing within the limited space of the compressor chamber, so that the indoor exhaust gas delivery path maintains low resistance and high efficiency, and avoids interference with components such as compressor 9 and four-way valve, thereby achieving quiet and high air volume exhaust of indoor exhaust gas without widening the casing.

[0127] If the diameter d < 40mm, the channel within the first pipe section 5 will be too narrow, significantly increasing the airflow velocity and simultaneously increasing the friction resistance and whistling noise. At the same time, fine oil droplets and dust are more likely to accumulate on the pipe wall, shortening the cleaning cycle. After long-term use, the effective cross-sectional area will further shrink, leading to a decrease in exhaust volume. An excessively small pipe diameter also places higher demands on the bending radius. When the flexible hose winds around the compressor chamber 15, it is prone to sharp bends, forming localized blockages and exacerbating the airflow impact noise.

[0128] If the diameter d > 100mm, the outer dimensions of the first pipe section 5 are too large. It cannot be arranged close to the partition 2 and the first side plate 13 or top plate within the existing compressor chamber 15, easily causing spatial conflicts with the compressor 9, liquid receiver, or electrical box. To avoid these conflicts, the entire casing 1 must be widened, leading to increased packaging, transportation, and costs. The excessively large pipe diameter also multiplies the natural bending radius, making it difficult to complete a 90° turn within a standard-height outdoor air conditioning unit. The bend is prone to flattening and deformation, and its own weight and moment of inertia are significantly increased. Upon impact, this creates an additional bending moment at the root of the connector, requiring additional structural reinforcement and resulting in material and mold waste.

[0129] In some embodiments of this application, the diameter of the first pipe section 5 is d, where d ≥ 60 mm and d ≤ 80 mm. Setting the diameter d to any value between 60 mm and 80 mm satisfies the requirement for a larger air volume while also better accommodating the assembly space.

[0130] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

[0131] For ease of explanation, the above description has been provided in conjunction with specific embodiments. However, the above exemplary discussion is not intended to be exhaustive or to limit the embodiments to the specific forms disclosed above. Various modifications and variations can be obtained based on the above teachings. The selection and description of the above embodiments are for the purpose of better explaining the principles and practical applications, thereby enabling those skilled in the art to better utilize the described embodiments and various different variations of embodiments suitable for specific use considerations.

Claims

1. An outdoor unit for an air conditioner, characterized in that, include: A housing, the housing including an air inlet and an air outlet; A partition is installed inside the housing to divide the internal space of the housing into a compressor chamber and a blower chamber; An outdoor heat exchanger is installed inside the casing to exchange heat with outdoor air flowing in through the air inlet. An outdoor fan is located inside the fan cavity and is positioned near the air outlet relative to the outdoor heat exchanger. The rotation of the outdoor fan causes a negative pressure zone to be formed inside the fan cavity. A first through section is provided on the partition plate, and the first through section is located on the air outlet side of the outdoor heat exchanger; The second through section is formed on the housing; An exhaust pipe is installed in the second through section. The exhaust pipe's outlet end is connected to the negative pressure zone through the first through section, and the exhaust pipe's inlet end is connected to the indoor environment. A damper assembly, located in the exhaust pipe, is used to open or close the airflow path between the fan chamber and the indoor environment.

2. The outdoor unit of the air conditioner according to claim 1, characterized in that, In the height direction of the casing, the distance between the center of the outdoor fan and the center of the first through part is L, where L satisfies: L≤r, L≥0.2r, and r is the radius of the outdoor fan; The end of the outdoor fan hub closest to the air outlet is defined as the hub tail end. In the axial direction of the outdoor fan, the first through part is located in the negative pressure zone between the outdoor heat exchanger and the hub tail end.

3. The outdoor unit of the air conditioner according to claim 2, characterized in that, The housing includes a front panel and a first side panel. The air outlet is opened on the front panel. The first side panel is connected to the front panel. The first side panel includes a first plate body disposed opposite to the front panel. The first plate body forms a side wall defining the compressor cavity. The center height of the first through portion is lower than the center height of the outdoor fan. The second through portion is opened on the first plate body.

4. The outdoor unit of the air conditioner according to claim 2, characterized in that, The center height of the first through section is higher than the center height of the outdoor fan. The casing includes a top plate. The second through section extends through the top plate along its thickness direction and is located at the top of the compressor chamber.

5. The outdoor unit of the air conditioner according to claim 1, characterized in that, The exhaust pipe includes: Two connectors are respectively inserted into the first through portion and the second through portion; The first pipe section is located inside the press chamber, and its two ends are respectively connected to the two connecting parts to connect the two connecting parts.

6. The outdoor unit of the air conditioner according to claim 5, characterized in that, One of the two connectors is fitted with the damper assembly.

7. The outdoor unit of the air conditioner according to claim 6, characterized in that, The damper assembly includes two dampers, which are rotatably connected to the connector via a rotating shaft. The rotation axis of the dampers extends along the height direction of the housing, and the rotation directions of the two dampers are opposite to each other. The dampers swing under negative pressure to open the airflow channel within the connector.

8. The outdoor unit of the air conditioner according to claim 7, characterized in that, A limiting part is provided on the inner peripheral wall of the connector where the damper assembly is located. The limiting part is located away from the negative pressure zone relative to the damper, so as to restrict the damper from rotating in the opposite direction under the action of negative pressure.

9. The outdoor unit of the air conditioner according to claim 6 or 7, characterized in that, The damper assembly also includes an elastic reset member, which is sleeved on the rotating shaft. One end of the elastic reset member is connected to the connector, and the other end is connected to the damper. The elastic reset member drives the damper to close to block the airflow channel when no external force is applied, and the damper swings against the elastic force of the elastic reset member under negative pressure to open the airflow channel.

10. The outdoor unit of the air conditioner according to claim 2, characterized in that, The diameter of the first pipe section is d, where d ≥ 40 mm and d ≤ 100 mm.

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