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 part is located on the baffle, and first through -going part is located at the air outlet side of outdoor heat exchanger, second through -going part is located on the casing, exhaust pipe is worn in second through -going part, and the gas outlet end of exhaust pipe is communicated with negative pressure area through first through -going part, and the gas inlet end of exhaust pipe is communicated with indoor environment. In the utility model, the indoor waste gas does not pass through outdoor heat exchanger, reduces the air resistance, and effectively improves the exhaust capacity 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. 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: 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.

[0006] The above technical solution has the following advantages or beneficial effects: By setting the exhaust pipe with the first and second through sections, the outdoor unit of the air conditioner can use the negative pressure generated by its own outdoor fan in the fan cavity to directly draw indoor exhaust gas to the outside, 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, the indoor exhaust gas does not pass through the outdoor heat exchanger, which not only reduces the 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, the exhaust pipe includes a first pipe section and a second pipe section. The first pipe section is located inside the compressor chamber and is used to connect the first through portion and the second through portion. The second pipe section is located in the outdoor environment and is used to connect the second through portion and the indoor environment.

[0008] 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 the second pipe segment only needs to be laid through the wall during on-site installation, reducing installation difficulty and the risk of transportation damage.

[0009] According to embodiments of this disclosure, the exhaust pipe further includes: A first connector is disposed on the partition plate. The first connector has a first interface communicating with the negative pressure zone. The first interface is located in the compressor chamber. The second connector is located in the second through portion and connected to the housing. The second connector has a second interface and a third interface that are connected. The second interface is located in the press cavity, and the third interface is located outside the housing. The first interface and the second interface are respectively connected to the two ends of the first pipe segment, and the third interface is used to connect to one end of the second pipe segment.

[0010] The above technical solution has the following advantages or beneficial effects: by setting the first connector and the second connector, the first pipe section and the second pipe section can be quickly installed by utilizing their standardized interfaces, which effectively improves the installation efficiency.

[0011] According to an embodiment of this disclosure, the diameter of the first pipe segment is d, where d ≥ 40 mm and d ≤ 100 mm.

[0012] 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.

[0013] 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.

[0014] The above technical solution has the following advantages or beneficial effects: When L > r, the first through-section 21 is located outside the outer edge rotation area 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 21 is too close to the hub 31 in the height direction of the casing, resulting in low negative pressure intensity and poor extraction effect of indoor exhaust gas. By setting L in 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.

[0015] 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.

[0016] 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.

[0017] 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.

[0018] 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.

[0019] According to an embodiment of this disclosure, a damper assembly is provided on the partition plate, the damper assembly being located in the negative pressure zone and used to open or close the first through portion.

[0020] The above technical solution has the following advantages or beneficial effects: by setting the damper assembly, it can selectively open or close the first through section, and block the first through section when there is no need to exhaust exhaust gas, so as to prevent backflow and the intrusion of insects and rodents into the indoor environment.

[0021] According to embodiments of this disclosure, the damper assembly includes: Mounting frame, mounted on the partition; The damper is circular in shape and is rotatably mounted in the mounting frame to allow or block the first through section; A drive motor is mounted on the mounting frame. The drive shaft of the drive motor extends along the height direction of the housing and is connected to the damper to drive the damper to rotate.

[0022] The above technical solution has the following advantages or beneficial effects: the mounting frame, rotating damper, and drive components can be combined to form a modular damper assembly, which can be pre-installed on the partition, improving production efficiency. Specifically, by using a single circular damper with central drive, the drive shaft of the drive motor coincides with the center of gravity of the damper, significantly reducing torque requirements. This allows for the direct use of small, low-power motors, which is beneficial for energy saving, noise reduction, and extending motor life.

[0023] According to an embodiment of this disclosure, a first limiting part and a second limiting part are provided in the mounting frame, and the first limiting part and the second limiting part are respectively located on both sides of the rotation axis of the damper; when the damper blocks the first through part, the first limiting part and the second limiting part abut against the two sides of the damper respectively.

[0024] The above technical solution has the following advantages or beneficial effects: the first limiting part and the second limiting part cooperate to not only realize the unidirectional rotation of the damper to conduct or block the first through part, but also to simultaneously abut against both sides of the damper when the first through part is blocked, forming a hard seal and preventing the return air from entering the room.

[0025] According to embodiments of this disclosure, L satisfies: L≤0.7r, L≥0.5r.

[0026] The above technical solution has the following advantages or beneficial effects: by setting the distance L to any value between 0.5r and 0.7r, the center of the first through part is located in the core area of ​​the outdoor fan's negative pressure field with "highest intensity and smallest fluctuation" in the height direction of the casing, thus avoiding the need to increase the outdoor fan speed to maintain the exhaust volume due to insufficient negative pressure intensity, and reducing energy consumption and noise. Attached Figure Description

[0027] 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 schematic diagram showing the positions of the first through portion and the second through portion according to an embodiment of this disclosure; Figure 7 This is a structural schematic diagram of an embodiment of the air conditioner outdoor unit, omitting the first pipe section; Figure 8 This is a top view of the internal structure of the outdoor unit of an air conditioner according to an embodiment of this disclosure. Figure 1 ; Figure 9 This is a structural schematic diagram of the partition according to one embodiment of the present disclosure; Figure 10 This is a structural schematic diagram of the first side plate according to an embodiment of the present disclosure; Figure 11 This is a schematic diagram of the structure of the damper assembly mounted on the partition according to one embodiment of the present disclosure; Figure 12 This is a schematic diagram of the state of the damper assembly blocking the air outlet channel according to an embodiment of the present disclosure; Figure 13 This is a schematic diagram showing the state of the damper assembly conducting the air outlet channel according to an embodiment of this disclosure; Figure 14 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 15 This is a top view of the internal structure of the outdoor unit of an air conditioner according to an embodiment of this disclosure. Figure 2 .

[0028] In the above figures: outdoor air conditioner unit 10; casing 1; air inlet 11; air outlet 12; first side plate 13; second plate 131; first plate 132; fan cavity 14; compressor cavity 15; second through section 151; chassis 16; second side plate 17; front panel 18; top plate 19; partition 2; first through section 21; outdoor fan 3; hub 31; hub tail end 312; blade 32; 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; mounting frame 81; damper 82; connecting part 821; rotating part 822; drive motor 83; first limiting part 84; second limiting part 85; compressor 9. Detailed Implementation

[0029] 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.

[0030] 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.

[0031] 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.

[0032] 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.

[0033] 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.

[0034] The outdoor unit 100 of the air conditioner provided in this utility model can have various implementation forms, as detailed below. Figures 1-15 Describe the outdoor unit 100 of the air conditioner.

[0035] 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.

[0036] 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.

[0037] 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.

[0038] 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.

[0039] 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.

[0040] 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.

[0041] In some embodiments of this application, reference is made to Figure 1 The outdoor unit 100 of the air conditioner may include an air outlet grille, which is connected to the casing 1. The air outlet grille is located at the air outlet 12 to serve both the functions of rectifying and guiding airflow and providing safety protection.

[0042] 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.

[0043] 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 1 and is used to divide the housing 1 into a fan chamber 14 and a compressor chamber 15.

[0044] 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.

[0045] 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.

[0046] refer to Figure 1 The housing 1 may include a front panel 18, which forms the front end of the housing 1. The air outlet 12 is provided on the front panel 18 of the housing 1.

[0047] 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.

[0048] refer to Figure 1 , Figure 2 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.

[0049] refer to Figure 5 ,refer to Figure 10 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.

[0050] The housing 1 may include a top plate 18, which is disposed opposite to the chassis and forms the top of the housing 1. The top plate 18 is used to enclose the top of the fan chamber 14 and the compressor chamber 15.

[0051] The housing 1 may include a first side panel 13. The two ends of the front panel 18 along its length are connected to the first side panel 13 and the second side panel 17, and the bottom end of the front panel 18 is connected to the chassis 16. The first side panel 13, the second side panel 17, the chassis 16, and the top panel 19 of the housing 1 together form the rear air inlet 11 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 in the casing 1 and is used to exchange heat with the air entering the casing 1 through the air inlet 11. 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 casing 1 through the air inlet 11. The outdoor air exchanges heat with the outdoor heat exchanger 4 inside the casing. 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 6The outdoor unit 100 of the air conditioner may include a first through part 21, which is opened on the partition 2 to connect the compressor chamber 15 and the negative pressure zone.

[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 6 The outdoor unit 100 of the air conditioner may include a second through part 151, which is disposed on the casing and is used to connect the compressor chamber 15 with the outdoor environment.

[0074] The exhaust pipe is installed in the second through section 151, and the air inlet end of the exhaust pipe is connected to the indoor environment to extract indoor exhaust gas under negative pressure.

[0075] In this embodiment, by setting the exhaust pipe with the first through part 21 and the second through part 151, the exhaust pipe can simply pass through the wall when the outdoor unit 100 of the air conditioner is installed, 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 speed of the outdoor fan 3.

[0076] 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 discharge 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.

[0077] In some embodiments of this application, reference is made to Figure 15 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.

[0078] 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.

[0079] 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.

[0080] In some embodiments of this application, reference is made to Figure 14 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.

[0081] 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.

[0082] 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.

[0083] 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.

[0084] 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.

[0085] 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.

[0086] According to embodiments of this disclosure, 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-section 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.

[0087] 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.

[0088] 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.

[0089] 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.

[0090] 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.

[0091] 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.

[0092] Specifically, 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 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.

[0093] 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.

[0094] 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.

[0095] In some embodiments of this application, reference is made to Figure 8 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 part 21 and the second through part 151. The first pipe section 5 may be a flexible hose, which facilitates avoidance of various components inside the compressor chamber 15 during pre-assembly and reduces 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 151 with the indoor environment. One end of the second pipe section is connected to the second through section 151, 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, reference is made to Figure 7 , Figure 9 The exhaust pipe may include a first connector 6, which is disposed on the partition 2 and has a first interface 61 communicating with the negative pressure zone. The first interface 61 is connected to one end of the first pipe section 5.

[0099] In this embodiment, the first connector 6 is disposed in the press chamber 15. One end of the first connector 6 is connected to the partition 2 and covers the first through part 21. The other end of the first connector 6 serves as the first interface 61 and is connected to the first pipe section 5.

[0100] refer to Figure 7 , Figure 10 The exhaust pipe may include a second connector 7, which is located in the second through portion 151. The second connector 7 is connected to the first side plate 13.

[0101] refer to Figure 7 The second connector 7 has a second interface 71. The second interface 71 is located inside the press chamber 15 and is connected to the other end of the first pipe section 5.

[0102] The second connector 7 has a third interface 72, which is located in the outdoor environment and is connected to the second interface 71. The connection between the third interface 72 and the second interface 71 forms an airflow channel, and the third interface 72 is connected to one end of the second pipe section.

[0103] 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.

[0104] 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.

[0105] In some other embodiments, the first connector 6 and the second connector 7 can be fixedly connected to both ends of the first pipe section 5, making the three into a non-removable integrated structure. During assembly, the first pipe section 5 is located inside the press chamber 15, with the first connector 6 at one end mounted on the partition plate 2, and the second connector 7 at the other end extending through the second through portion 151 to the outside of the housing 1.

[0106] In some embodiments of this application, the outdoor unit 100 of the air conditioner may include a damper assembly 8, which is located in a negative pressure zone. (See reference...) Figure 8 The damper assembly 8 is disposed on the partition 2 to conduct or block the first through section 21.

[0107] In this embodiment, by setting the damper assembly 8, the first through section 21 can be selectively opened or closed, thereby selectively discharging indoor exhaust gas. When exhaust gas is not required, the first through section 21 can be blocked to prevent backflow and the intrusion of insects and rodents into the indoor environment.

[0108] In some embodiments of this application, reference is made to Figure 12 The damper assembly 8 may include a mounting frame 81, which is mounted on the partition 2. The mounting frame 81 can be fixed to the partition 2 with bolts.

[0109] In this embodiment, the mounting frame 81 and the first connector 6 are respectively connected to the two sides of the partition 2.

[0110] refer to Figure 12 The damper assembly 8 can be a damper 82, which is rotatably disposed within the mounting frame 81 to conduct or block the first through section 21.

[0111] The damper assembly 8 has a drive component, which is mounted on the mounting frame 81. The drive component is connected to the damper 82 and is used to drive the damper 82 to rotate.

[0112] In this embodiment, the mounting frame 81, the rotating damper 82, and the drive component cooperate to form a pre-installable independent module. The damper, drive component, and mounting frame can be assembled before entering the production line, allowing them to be pre-installed as a whole on the partition 2. The production line only needs to complete the overall bolt fixing, reducing online operations and improving production efficiency.

[0113] For example, in this embodiment, an air outlet channel connecting the first through part 21 and the negative pressure zone can be formed inside the mounting frame 81, and the damper 82 realizes the connection and isolation of the first through part 21 by opening or closing the air outlet channel.

[0114] In some embodiments of this application, the damper 82 is configured with one. (See reference...) Figure 12 , Figure 13 The damper 82 is circular in shape.

[0115] The drive component may include a drive motor 83 having a drive shaft that extends along the height of the housing and is connected to the top of the damper 82.

[0116] refer to Figure 12 The top and bottom of the damper 82 are provided with connecting parts 821, and the corresponding connecting parts 821 of the mounting frame 81 are provided with fixing grooves. The fixing grooves are used for the connecting parts 821 to pass through, and the connecting parts 821 pass through the fixing grooves to be inserted and engaged with the drive shaft.

[0117] The bottom end of the damper 82 is provided with a rotating part 822, and the mounting frame 81 is provided with a groove that matches the rotating part 822. The rotating part 822 can be rotatably disposed in the groove.

[0118] In this embodiment, a single circular damper 82 is used and driven centrally, so that the damper generates almost no eccentric inertial force when it operates. The drive motor only needs to provide the minimum torque to overcome the negative pressure, which significantly reduces the requirements for drive capability. A smaller power and lower noise motor can be used, which is beneficial to achieve energy saving, noise reduction and extended motor life.

[0119] In some embodiments of this application, reference is made to Figure 12 The damper assembly 8 may include a first limiting part 84, which is disposed within the mounting frame 81. The first limiting part 84 is located on one side of the rotation axis of the damper 82.

[0120] refer to Figure 13 The damper assembly 8 may include a second limiting part 85, which is disposed in the mounting frame 81 and is located on the other side of the rotation axis of the damper 82.

[0121] The first limiting part 84 and the second limiting part 85 are located on both sides of the rotation axis of the damper 82. When the damper 82 blocks the first through part 21, the first limiting part 84 and the second limiting part 85 abut against the two sides of the damper 82.

[0122] In this embodiment, the first limiting part 84 and the second limiting part 85 cooperate to not only realize unidirectional rotation to conduct or block the first through part 21, but also simultaneously abut against both sides of the damper 82 when the first through part 21 is blocked, forming a hard seal to prevent back air from entering the room.

[0123] 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 15, so that the indoor exhaust gas delivery path maintains low resistance and high efficiency, and avoids interference with components such as the compressor 9 and the four-way valve, thereby achieving quiet and high air volume exhaust of indoor exhaust gas without widening the casing.

[0124] 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.

[0125] If the diameter d > 100mm, the outer dimensions of the first pipe section 5 are too large, making it impossible to arrange it close to the first side plate 13 and partition 2 within the existing compressor cavity 15. This could easily cause spatial conflicts with the compressor 9, liquid receiver, or electrical box. To avoid these conflicts, the entire casing 1 of the unit 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 the unit's 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.

[0126] 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.

[0127] 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.

[0128] 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 air conditioner outdoor unit characterized by comprising: The application relates to an air conditioner, which comprises a casing, an outdoor heat exchanger, an outdoor fan, a first through portion, a second through portion and an exhaust pipe. The casing comprises an air inlet and an air outlet. The outdoor heat exchanger is arranged in the casing and exchanges heat with outdoor air flowing in through the air inlet. The outdoor fan is arranged in a fan cavity and is located close to the outdoor heat exchanger and the air outlet. The outdoor fan rotates to form a negative pressure area in the fan cavity. The first through portion is arranged on the partition plate and is located on the air outlet side of the outdoor heat exchanger. The second through portion is arranged on the casing. The exhaust pipe is arranged in the second through portion, and the air outlet end of the exhaust pipe is connected with the negative pressure area through the first through portion, and the air inlet end of the exhaust pipe is connected with the indoor environment.

2. The air conditioner outdoor unit according to claim 1, characterized by The exhaust pipe comprises a first pipe section and a second pipe section.

3. The air conditioner outdoor unit according to claim 2, characterized by The first pipe section is arranged in the press cavity and is connected with the first through portion and the second through portion. The second pipe section is arranged in the outdoor environment and is connected with the second through portion and the indoor environment. The exhaust pipe further comprises a first connecting member and a second connecting member. The first connecting member is arranged on the partition plate and has a first interface connected with the negative pressure area.

4. The air conditioner outdoor unit according to claim 2, characterized by The second connecting member is arranged in the second through portion and is connected with the casing.

5. The air conditioner outdoor unit according to claim 1, characterized by The second connecting member has a second interface and a third interface connected with each other. The second interface is located in the press cavity, and the third interface is located outside the casing.

6. The air conditioner outdoor unit according to claim 5, characterized by The first interface and the second interface are respectively connected with two ends of the first pipe section.

7. The air conditioner outdoor unit according to claim 5, wherein The diameter of the first pipe section is d, d>=40mm and d<=100mm.

8. The air conditioner outdoor unit according to claim 1, characterized by 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, L<=r and L>=0.2r, r being the radius of the outdoor fan.

9. The air conditioner outdoor unit according to claim 8, characterized by The hub end of the outdoor fan close to the air outlet is defined as a hub tail end. In the axial direction of the outdoor fan, the first through portion is located in the negative pressure area between the outdoor heat exchanger and the hub tail end. The casing comprises a front panel and a first side plate. The air outlet is arranged on the front panel. The first side plate is connected with the front panel. The first side plate comprises a first plate body arranged opposite to the front panel. The first plate body forms a side wall of the press cavity. The height of the center of the first through portion is lower than the height of the center of the outdoor fan. The second through portion is arranged on the first plate body. The height of the center of the first through portion is higher than the height of the center of the outdoor fan. The casing comprises a top plate. The second through portion is arranged on the top plate along the thickness direction of the top plate. The second through portion is located at the top of the press cavity. The partition plate is provided with a damper assembly. The damper assembly is located in the negative pressure area and is used for opening or blocking the first through portion. The damper assembly comprises a mounting frame arranged on the partition plate. The mounting frame is provided with a mounting groove. The mounting groove is arranged on the mounting frame. The mounting groove is arranged on the mounting frame. The mounting groove is arranged on the mounting groove. The mounting groove is arranged on the mounting groove. The mounting groove is arranged on the mounting frame. The mounting groove is arranged on A circularly arranged air door is rotatably arranged in the mounting frame to open or block the first through part; A driving motor is mounted on the mounting frame, and a driving shaft of the driving motor extends along the height direction of the casing and is connected with the air door to drive the air door to rotate.

10. The air conditioner outdoor unit according to claim 5, characterized by L satisfies: L≤0.7r, L≥0.5r.

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