air conditioner outdoor unit

Abstract

This utility model provides an outdoor unit for an air conditioner, relating to the field of air conditioning technology. The outdoor unit includes: a casing with an air inlet and a first side plate; a partition dividing the internal space of the casing into a compressor chamber and a fan chamber; and multiple rows of heat exchangers disposed within the fan chamber, comprising: a first heat exchanger; at least one second heat exchanger located between the air inlet and the first heat exchanger; a first end plate disposed at one end of the first heat exchanger and having a first plate body; and one or more second end plates disposed at one end of the second heat exchangers and having two opposing fourth plates bodies. One of the multiple fourth plates, located relatively far from the second plate body, is connected to the first side plate, and another relatively far from the first side plate is connected to the second plate body. When there are multiple second end plates, adjacent fourth plates of two adjacent second end plates are connected to fix the multiple rows of heat exchangers, reducing the risk of friction, uneven heat exchange, and noise caused by gaps between the multiple rows of heat exchangers.

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] The outdoor unit of an air conditioner is a crucial component of an air conditioning system. Its primary function is to dissipate heat from the indoor environment to the outdoors via a heat exchanger, achieving either cooling or heating. It typically includes components such as the casing, multi-row heat exchangers, and an outdoor fan. Among these, the multi-row heat exchanger is the key component for achieving heat exchange. Properly securing the multi-row heat exchanger is essential for improving product quality. If the multi-row heat exchanger is misaligned, friction and collisions can easily occur in the pipes during transportation. This can range from minor issues like fins collapsing and affecting heat exchange to more serious problems like pipe breakage, causing refrigerant leaks and resulting in even more severe consequences.

[0003] In related technologies, the multi-row heat exchangers of side-discharge air conditioning outdoor units are mostly fixed by connecting one end to a partition plate via a single end plate, and the other end to the first side plate of the casing via a single end plate. A small portion in the middle is fixed by a motor bracket. The end plate only fixes the outermost row of heat exchangers, and the motor bracket only locally clamps the multi-row heat exchangers. The fixing range is insufficient and cannot ensure the overall clamping of the multi-row heat exchangers. This results in a lack of effective constraint on the remaining heat exchangers, which can easily cause gaps between two or more rows of heat exchangers, leading to problems such as friction risk, uneven heat exchange, and noise.

[0004] To address the gap issue in multi-row heat exchangers, some solutions involve adding multiple small clips at the bottom and top of the heat exchanger or using wire ties for binding. However, wire ties have low strength, are prone to aging and breakage, and have low assembly efficiency. The small clips have a small contact area, which not only fails to completely eliminate gaps but also increases installation steps. Furthermore, multi-row heat exchangers are inherently heavy, and the small clips at the bottom are typically just small plastic or sheet metal pieces with limited contact area and weak rigidity. During transport drops or long-term operational vibrations, the entire weight of the heat exchanger is transmitted through the "point contact" of multiple small clips, resulting in extremely high local pressure. This can easily crush or crack the small clips, and even deform or damage the copper tubes or fins of the heat exchanger, ultimately leading to decreased heat exchange efficiency or refrigerant leakage and poor reliability. 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, an air outlet, and a first side plate, the first side plate forming one end of the housing in the width direction; 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 fan is located inside the fan cavity and near the air outlet. The heat exchanger has multiple rows, and the multiple rows of heat exchangers are disposed within the fan cavity. The multiple rows of heat exchangers include: The first heat exchanger is located between the air inlet and the outdoor fan; At least one second heat exchanger is located between the air inlet and the first heat exchanger; The first end plate includes: The first plate abuts against the end of the first heat exchanger furthest from the partition; The second plate is connected to the first plate and protrudes relative to the first heat exchanger, and the second plate extends along the height direction of the casing. One or more second end plates, the second end plates comprising: The third plate abuts against the end of the second heat exchanger furthest from the partition plate; Two fourth plates are disposed opposite each other at both ends of the second end plate in the thickness direction of the second heat exchanger. The fourth plates protrude relative to the second heat exchanger and extend along the height direction of the casing. Of the plurality of fourth plates, one that is relatively far from the second plate is connected to the first side plate, and one that is relatively far from the first side plate is connected to the second plate. When there are multiple second end plates, the adjacent fourth plates of two adjacent second end plates are connected to fix multiple rows of heat exchangers.

[0006] The above technical solution has the following advantages or beneficial effects: By connecting the first end plate with at least one second end plate, the ends of the multi-row heat exchangers are tightly fitted and fixed, reducing the risk of friction, uneven heat exchange, and noise caused by gaps between the multi-row heat exchangers. Compared to the existing technology that uses multiple wire ties or fixing clips for fixation, this not only effectively improves production efficiency but also avoids damage to the heat exchanger fins.

[0007] According to an embodiment of this disclosure, when there is only one second end plate, the fourth plate is provided with a mounting hole for fastener connection, and the first side plate and the second plate are provided with through holes corresponding to the mounting holes, and the fastener passes through the through holes and is connected to the mounting hole; wherein, the mounting hole and the projection of the heat exchange tube of the corresponding second heat exchanger on the fourth plate do not overlap.

[0008] The above technical solution has the following advantages or beneficial effects: by setting mounting holes on the fourth plate, the second end plate can be detachably and fixedly connected to the first end plate and the first side plate, which is simple and convenient; at the same time, the position of the mounting holes avoids the pipeline of the heat exchange tube, preventing damage to the pipeline during fastener installation.

[0009] According to an embodiment of this disclosure, the first side plate has a connecting portion recessed toward the fan cavity, the connecting portion being connected to the corresponding fourth plate.

[0010] The above technical solution has the following advantages or beneficial effects: by setting the connecting part, the phenomenon that the fourth plate cannot be fixed to the first side plate due to a certain distance between the heat exchanger and the first side plate is avoided.

[0011] According to embodiments of this disclosure, the second plate and the fourth plate are provided with reinforcing ribs.

[0012] The above technical solution has the following advantages or beneficial effects: by setting reinforcing ribs, the structural strength of the second plate and the fourth plate is significantly improved, thereby improving the connection stability and firmness.

[0013] According to an embodiment of this disclosure, the heat exchanger has a first straight section, the thickness direction of which extends along the thickness direction of the housing, and a motor support is disposed within the housing, the motor support comprising: The main support frame is used for installing the outdoor fan. A positioning element is provided at the top of the support body. The positioning element has a fixing part, which is used to clamp the first straight section of the multi-row heat exchanger. The ratio of the length of the fixing part to the length of the first straight section is a, where a ≥ 0.5 and a ≤ 0.9.

[0014] The above technical solution has the following advantages or beneficial effects: If 'a' is less than 0.5, the clamping range of the fixing part is too small, and the traditional small bottom clips or wire ties are still required, increasing the installation steps instead of reducing them. If 'a' is greater than 0.9, the fixing part almost covers the first straight section, significantly increasing material, weight, and mold costs. This is not conducive to lightweight design and can easily cause installation interference, affecting assembly efficiency. Setting the ratio 'a' in the range of 0.5 to 0.9 widens the range of the positioning component that fixes the heat exchanger, eliminating the need for the small clips used in the traditional solution to fix the bottom of the heat exchanger. This improves installation efficiency and reduces the generation of abnormal noise and the probability of damage to the heat exchanger fins.

[0015] According to embodiments of this disclosure, the positioning element includes: A support plate is disposed above the heat exchanger; A first baffle is connected to the support plate and extends along the length of the support plate; Multiple second baffles are spaced apart along the length of the support plate. The second baffles are connected to the support plate, and the fixing part is defined between the first baffle, the multiple second baffles and the support plate.

[0016] The above technical solution has the following advantages or beneficial effects: the first baffle and the second baffle form a bidirectional limiting mechanism to prevent the multi-row heat exchanger from displacing along its own thickness direction; multiple second baffles are provided to improve the tight connection of the multi-row heat exchanger while reducing the use of materials.

[0017] According to embodiments of this disclosure, the positioning element further includes a mounting plate connected to the bracket body, the mounting plate being connected to the support plate and the housing at both ends in the thickness direction of the housing, respectively; and / or, the positioning element is an integral structure.

[0018] The above technical solution has the following advantages or beneficial effects: the front and rear ends of the positioning component are respectively positioned and connected to the housing and the heat exchanger, so that the force is no longer solely borne by the cantilever of the main support body, thus improving the overall rigidity; the positioning component is an integrated structure, which reduces the assembly process and improves the installation efficiency of the motor support.

[0019] According to an embodiment of this disclosure, the positioning element further includes a guide flange, one end of which is connected to the bottom end of the first baffle, and the other end extends downward toward a direction away from the multi-row heat exchanger.

[0020] The above technical solution has the following advantages or beneficial effects: the setting of the guide flange makes the bottom of the clamping position flared, which facilitates the assembly between the positioning part and the heat exchanger and improves the production efficiency of the outdoor unit of the air conditioner.

[0021] According to an embodiment of this disclosure, the partition has a first side facing the fan cavity, and a portion of the first side is recessed into the compressor cavity to form a clearance portion that avoids the outdoor fan. The edge of the clearance portion connected to the first side is provided with a rounded corner, and the radius of the rounded corner is R, where R≤100mm and R≥50mm.

[0022] The above technical solution has the following advantages or beneficial effects: by setting a clearance section on the partition, the outdoor fan is avoided, and the compressor cavity size is reduced without affecting the pipeline layout, thus improving the utilization rate of the internal space of the casing; in particular, the rounded corner with a radius R in the range of 50mm~100mm makes the partition better formed and demolded in the mold. If the radius R of the rounded corner is less than 50mm, it will fit tightly with the mold surface, requiring a larger ejection force during demolding, and is prone to damaging the surface of the partition. If the radius R is greater than 100mm, the rounded corner is too large, which will occupy the effective space of the compressor cavity and reduce the margin for compressor and pipeline layout.

[0023] According to an embodiment of this disclosure, the housing includes a front panel, and a guide ring is provided on the side of the front panel facing the outdoor fan. The distance between the guide ring and the clearance portion is not less than 8mm.

[0024] The above technical solution has the following advantages or beneficial effects: by setting the distance between the air guide ring and the avoidance part to not less than 8mm, interference between the air guide ring and the partition is effectively avoided, so that the air guide ring can give full play to its guiding function. Attached Figure Description

[0025] 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 structural schematic diagram of an outdoor unit of an air conditioner according to an embodiment of the present disclosure; Figure 5 yes Figure 4 A magnified view of a portion at point A; Figure 6 This is a partial structural schematic diagram of the outdoor unit of an air conditioner from another perspective according to an embodiment of the present disclosure; Figure 7 This is a structural schematic diagram of the second end plate according to one embodiment of the present disclosure; Figure 8 This is a structural schematic diagram of the first end plate according to an embodiment of the present disclosure; Figure 9 This is a partial structural schematic diagram of the second end plate according to an embodiment of the present disclosure; Figure 10 This is a partial structural schematic diagram of the first end plate according to an embodiment of the present disclosure; Figure 11 This is a partial schematic diagram of the internal structure of an outdoor unit of an air conditioner according to an embodiment of the present disclosure; Figure 12 This is a schematic diagram of an embodiment of the air conditioner outdoor unit with the front panel omitted. Figure 13 yes Figure 12 A magnified view of the area at point C; Figure 14 This is a structural schematic diagram of the positioning element according to one embodiment of the present disclosure; Figure 15 This is an assembly diagram of the outdoor fan and heat exchanger according to one embodiment of this disclosure; Figure 16 This is an assembly diagram of the outdoor fan and the partition according to one embodiment of the present disclosure; Figure 17 This is a structural schematic diagram of the partition according to one embodiment of the present disclosure.

[0026] In the above figures: outdoor air conditioner unit 10; casing 1; air inlet 11; air outlet 12; air outlet grille 13; fan cavity 14; compressor cavity 15; chassis 16; first side plate 17; connecting part 171; air guide ring 18; compressor 19; partition 2; clearance part 21; outdoor fan 3; first heat exchanger 4; second heat exchanger 5; first end plate 6; first plate 61; second plate 62; second end plate 7; third plate 71; fourth plate 72; mounting hole 81; reinforcing rib 82; through hole 83; through hole 84; motor bracket 9; bracket body 91; positioning part 92; support plate 921; first baffle 922; second baffle 923; guide flange 924; mounting plate 925. Detailed Implementation

[0027] 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.

[0028] 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.

[0029] 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.

[0030] 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.

[0031] 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.

[0032] 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.

[0033] 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.

[0034] 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.

[0035] 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.

[0036] refer to Figures 1-3 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.

[0037] 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.

[0038] 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.

[0039] 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 13, which is connected to the housing 1 and located at the air outlet 12 to serve both the functions of air rectification and air guidance, as well as safety protection.

[0040] 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.

[0041] refer to Figure 3 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.

[0042] 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.

[0043] In some embodiments of this application, the air inlet 11 may be located on the rear and side of the housing 1, and the air outlet 12 may be located on the front of the housing 1. In this embodiment, the air outlet 12 is located on the front panel of the housing 1.

[0044] In some embodiments of this application, reference continues to be made to... Figure 3 The outdoor unit 100 of the air conditioner may include an outdoor fan 3, which is located inside the fan cavity 14.

[0045] refer to Figure 3 , Figure 4 The outdoor fan 3 can be oriented towards and close to the air outlet 12. The outdoor fan 3 can be an axial flow fan.

[0046] In some embodiments of this application, the outdoor unit 100 of the air conditioner may include a heat exchanger disposed within the fan cavity 14 for heat exchange with the air inside the casing 1. The heat exchanger is positioned relative to the outdoor fan 3 near the air inlet 11.

[0047] In this embodiment, the outdoor fan 3 is installed between the heat exchanger 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 heat exchanger 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.

[0048] refer to Figure 3 The outdoor unit 100 of the air conditioner may include a compressor 19, which is disposed in the compressor chamber 15.

[0049] 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.

[0050] 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 to allow refrigerant circulation. Through this refrigerant circuit, the air conditioner allows the refrigerant to circulate sequentially through the compressor 19, condenser, throttling device, and evaporator, enabling it to perform indoor cooling or heating.

[0051] An air conditioner may include an indoor unit, which includes an indoor heat exchanger.

[0052] The indoor heat exchanger functions as either a condenser or an evaporator. When the indoor heat exchanger is used as a condenser, the air conditioner functions as a heater in heating mode; when the indoor heat exchanger is used as an evaporator, the air conditioner functions as a cooler in cooling mode.

[0053] 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.

[0054] The compressor 19 compresses the refrigerant gas into a high temperature and high pressure state and discharges the compressed refrigerant gas, which flows into the condenser.

[0055] 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.

[0056] 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.

[0057] 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 19.

[0058] 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.

[0059] refer to Figure 6 The housing 1 may include a first side plate 17, which forms one end of the housing 1 in the width direction. The air inlet 11 on the side is formed on the first side plate 17.

[0060] In some embodiments of this application, the heat exchanger can be a plate heat exchanger. In order to increase the heat exchange area while minimizing the size of the outdoor unit 100, the heat exchanger can be configured as an L-shaped heat exchanger in this embodiment. This configuration allows the outdoor unit 100 to maintain good heat exchange performance within a compact size, better adapting to different installation environments and space constraints.

[0061] When the heat exchanger is an L-shaped heat exchanger, it is positioned on the air inlet side. The heat exchanger includes a bent portion located at one of the apex corners of the casing 1.

[0062] The heat exchanger may include a first straight section, which is connected to one end of the bent section. The first straight section extends along the thickness direction F2 of the housing 1 and is positioned corresponding to the air inlet 11 on the rear side of the housing 1.

[0063] The heat exchanger may include a second straight section, which is connected to the other end of the bent section. The thickness direction of the second straight section extends along the width direction F1 of the housing 1, and the second straight section is provided corresponding to the air inlet 11 on the first side plate 17.

[0064] As air conditioner outdoor units evolve towards "smaller enclosures and greater capacity," in some embodiments of this application, heat exchangers can be arranged in multiple rows along the airflow direction, with these rows arranged in parallel to improve heat exchange efficiency. Typically, double or triple rows of heat exchangers are used.

[0065] During the assembly of the outdoor unit 100 of the air conditioner, the fixing of the multi-row heat exchanger is particularly important. If the fixing is deviated, the heat exchanger pipes are prone to friction and collision during transportation. This can cause the heat exchanger fins to collapse and affect heat exchange, or even cause the pipes to break, resulting in refrigerant leakage and more serious consequences.

[0066] The existing multi-row heat exchangers are mostly fixed by using a single end plate to connect one end to the partition plate 2, and the other end to the first side plate 17 of the casing 1. The middle part is fixed by the motor bracket 9. This fixing method only fixes the outermost row of heat exchangers, which can easily cause gaps between two or more rows of heat exchangers, resulting in friction risk, uneven heat exchange and noise problems.

[0067] In related technologies, to address the gap issue between multi-row heat exchangers, additional methods such as wire ties or multiple clamps and small clips are typically used for fixing. Using wire ties reduces production efficiency, results in lower strength, and poses a noise risk. Using clamps to secure the multi-row heat exchangers can easily damage the fins. Multiple small clips located at the bottom of the multi-row heat exchanger only provide point contact and cannot eliminate the gap between the entire row, still requiring multiple clips and increasing the number of parts.

[0068] To address the aforementioned technical problems, in some embodiments of this application, reference is made to... Figure 4 , Figure 5 The multi-row heat exchanger may include a first heat exchanger 4, which is located between the air inlet 11 and the outdoor fan 3. The multi-row heat exchanger may also include at least one second heat exchanger 5, which is located between the air inlet 11 and the first heat exchanger 4. A first end plate 6 is provided at the end of the first heat exchanger 4, and a second end plate 7 is provided at the end of the second heat exchanger 5. The multi-row heat exchanger is fixed by the interconnection of the first end plate 17, the second end plate 7, and the first end plate 6.

[0069] Specifically, reference Figure 8 , Figure 10 The first end plate 6 may include a first plate body 61, which abuts against the end of the first heat exchanger 4 away from the partition plate 2. The first end plate 6 provides independent and reliable end support for the first heat exchanger 4, preventing the end fins from collapsing and the pipes from shaking. Specifically, the first plate body 61 abuts against the end of the second straight section of the first heat exchanger 4 away from the bend.

[0070] The first end plate 6 may include a second plate body 62, which is connected to the first plate body 61. (See reference) Figure 5 The second plate 62 protrudes relative to the first heat exchanger 4 and extends along the height direction of the casing 1.

[0071] The second end plate 7 is connected to one end of the second heat exchanger 5. The second end plate 7 provides independent and reliable end support for the second heat exchanger 5, preventing the fins from collapsing and the pipes from shaking. One or more second end plates 7 are configured depending on the number of second heat exchangers. Models with three or more rows of heat exchangers can be directly expanded by increasing the number of second end plates 7, without the need for new molds, thus reducing development costs.

[0072] For example, refer to Figure 5 The multiple heat exchangers consist of an inner first heat exchanger 4 and an outer second heat exchanger 5. The second heat exchanger 5 is positioned closer to the air inlet 11 than the first heat exchanger 4. The second end plate 7 is equipped with one.

[0073] refer to Figure 5, Figure 7 , Figure 9 The second end plate 7 may include a third plate 71, which abuts against the end of the second heat exchanger 5 furthest from the partition plate 2. (Reference) Figure 5 The third plate 71 abuts against the end of the second straight section of the second heat exchanger 5 away from the bend.

[0074] It should be noted that the first plate 61 and the third plate 71 are provided with a number of through holes 84, wherein the number of through holes 84 cooperate with the insertion holes on the heat exchange tube insertion surface at the end of the heat exchanger for inserting the heat exchange tube.

[0075] The second end plate 7 may include two fourth plates 72, which are disposed opposite each other at both ends of the second end plate 7 in the thickness direction of the second heat exchanger 5. (Continue to refer to...) Figure 5 The fourth plate 72 protrudes from the front panel relative to the second heat exchanger 5, and the fourth plate 72 extends along the height direction of the casing 1.

[0076] refer to Figure 5 , Figure 6 and Figure 11 One of the multiple fourth plates 72, which is relatively far from the second plate 62, is connected to the first side plate 17. This arrangement allows the first heat exchanger 4 of the inner row to be fixed to the second heat exchanger 5 of the outer row, eliminating the gap between the two rows, achieving a tight connection between them, and avoiding relative vibration.

[0077] Furthermore, when there are multiple second end plates 7, the two adjacent fourth plates 72 of two adjacent second end plates 7 are connected to fix the multi-row heat exchanger.

[0078] In the above embodiments, the connection between a first end plate 6 and at least one second end plate 7 and a first side plate 17 achieves tight fitting and fixation of the ends of the multi-row heat exchangers, reducing the risk of friction, uneven heat exchange, and noise caused by gaps between the multi-row heat exchangers. Compared with the existing technology that uses multiple wire ties or fixing clips for fixation, this not only effectively improves production efficiency but also effectively avoids damage to the heat exchanger fins.

[0079] In this embodiment, the first end plate 6 and the second end plate 7 are disposed at one end of the multi-row heat exchanger near the bending part, which effectively solves the problem of excessive gap between the multi-row heat exchangers caused by the different bending radii of the bending parts.

[0080] It should be noted that in this application, "multiple" refers to two or more quantities.

[0081] In some embodiments of this application, the fourth plate 72 is provided with mounting holes 81 for fastener connection.

[0082] In this design, the projection of the heat exchange tubes of the second heat exchanger 5 onto the fourth plate 72 does not overlap with the mounting hole 81. This arrangement ensures that the mounting hole 81 avoids interference between the heat exchange tubes and the fasteners, prevents damage to the piping during fastener installation that could lead to refrigerant leakage, and improves reliability.

[0083] In this embodiment, the second end plate 7 has a U-shaped symmetrical structure. The second end plate 7 is formed in a single stamping process, reducing steps and costs. Simultaneously, the symmetrical structure ensures uniform stress distribution on the second end plate 7, improving connection stability.

[0084] refer to Figure 9 , Figure 10 The first side plate 17 and the second plate 62 are provided with through holes 83 corresponding to the mounting holes 81, and fasteners pass through the through holes 83 and are connected to the mounting holes 81. The fasteners can be screws.

[0085] Specifically, the fastener passes through the through hole 83 on the first side plate 17 and connects to the mounting hole 81 on the second end plate 7, thereby achieving a detachable connection between the second end plate 7 and the first side plate 17. The fastener also passes through the through hole 83 on the second plate 62 and connects to the mounting hole 81 on the second end plate 7, thereby achieving a detachable connection between the second end plate 7 and the first end plate 6.

[0086] In this embodiment, by providing mounting holes 81 on the fourth plate 72, the second end plate 7 and the first end plate 6 can be detachably and fixedly connected, which is simple and convenient.

[0087] In some embodiments of this application, reference is made to Figure 12 The bottom of the fourth plate 72, which is close to the first side plate 17, is connected to the chassis 16, which further improves the installation stability of the multi-row heat exchanger.

[0088] In some embodiments of this application, the first side plate 17 has a connecting portion 171 recessed toward the fan cavity 14, and the connecting portion 171 is connected to its corresponding fourth plate 72.

[0089] In this embodiment, by providing the connecting part 171, the assembly gap between the second end plate 7 and the side plate is eliminated, ensuring that the fasteners can be installed and locked, and avoiding the phenomenon that the fourth plate 72 cannot be fixed to the first side plate 17 due to a certain distance between the heat exchanger and the first side plate 17. The connecting part 171 can directly fit and lock the adjacent fourth plate 72, avoiding the need for on-site hole enlargement or gasket addition, effectively improving assembly efficiency.

[0090] In some embodiments of this application, the second plate 62 and the fourth plate 72 are provided with reinforcing ribs 82. By providing reinforcing ribs 82, the structural strength of the second plate 62 and the fourth plate 72 is significantly improved, thereby improving the connection stability and firmness.

[0091] In this embodiment, both the first end plate 6 and the second end plate 7 are sheet metal parts. The reinforcing rib 82 is a pressed structure on the second plate 62 and the fourth plate 72.

[0092] The reinforcing rib 82 of the pressed structure has high strength. By setting the pressed structure, it is ensured that the fourth plate 72 and the second plate 62 have sufficient support capacity and structural strength, and deformation of the second plate 62 and the fourth plate 72 is avoided when they are connected and fixed.

[0093] For the installation of outdoor fan 3, refer to... Figure 4 The outdoor unit 100 of the air conditioner may include a motor bracket 9, which is disposed inside the housing 1.

[0094] The motor bracket 9 may include a bracket body 91, which extends along the height direction of the housing 1 and is used for mounting the outdoor fan 3. (Reference) Figure 12 The bottom of the support body 91 is connected to the chassis 16.

[0095] The motor bracket 9 may include a positioning element 92, which is located at the top of the bracket body 91. The positioning element 92 extends horizontally and is substantially perpendicular to the upper end of the bracket body.

[0096] refer to Figure 12 The front and rear ends of the positioning member 92 are respectively connected to the housing 1 and the multi-row heat exchangers. In this embodiment, the positioning member 92 is used to pull the top of the heat exchanger and the front panel of the housing 1 together to form a closed force-bearing frame, which can improve the overall integrity of the outdoor unit 100 of the air conditioner and improve the reliability of the connection.

[0097] In some embodiments of this application, the positioning member 92 is formed with a fixing part for clamping the first straight section of the multi-row heat exchanger.

[0098] The fixing part of the positioning component 92 enables a tight connection between the first straight sections of the multi-row heat exchangers, further reducing the risk of friction caused by gaps, uneven heat exchange, and noise.

[0099] In related technologies, the coverage area of ​​the fixing part for the multi-row heat exchanger is small, which means that the motor bracket 9 needs to fix the multi-row heat exchanger at a "single point". Multiple small clips need to be set at the bottom of the heat exchanger for clamping and fixing, which not only increases the number of parts, but also reduces production efficiency.

[0100] In addition, the heat exchanger itself is quite heavy, while the small clips at the bottom are usually just small pieces of plastic or sheet metal with limited contact area and weak rigidity. During transport drops or long-term operation vibrations, the entire weight of the heat exchanger is transmitted through the "point contact" of these small clips, resulting in extremely high local pressure. This can easily crush or crack the small clips, or even deform or damage the copper tubes or fins of the heat exchanger, ultimately leading to a decrease in heat exchange efficiency or refrigerant leakage.

[0101] To address the aforementioned technical problems, in some embodiments of this application, reference is made to... Figure 16 The ratio of the length L1 of the fixed part to the length L2 of the first straight segment is a. The ratio a is set to satisfy the relationship: a≥0.5, a≤0.9.

[0102] If 'a' is less than 0.5, the clamping range of the fixing part is too small, making it impossible to eliminate the gaps between the first straight sections of the multi-row heat exchangers. The traditional small bottom clamps must still be retained, increasing the installation steps instead of reducing them. To improve the fixing range of the fixing part for the multi-row heat exchangers and ensure a tight fit, the ratio 'a' is set to no less than 0.5. In specific designs, a suitable parameter should be selected. For example, 'a' can be 0.5 or 0.6, which can, to some extent, prevent the heat exchanger fins from collapsing.

[0103] When α is greater than 0.9, the fixed part almost completely covers the first straight section of the multi-row heat exchanger, significantly increasing material, weight, and mold costs. This not only hinders lightweight design but also easily causes installation interference, affecting assembly efficiency. To reduce costs and improve assembly efficiency, the ratio α is set to no greater than 0.9. A suitable and specific parameter should be selected during the design process.

[0104] In some embodiments of this application, the ratio of the length of the fixed part to the length of the first straight segment is defined as a, and the ratio a satisfies the relationship: 0.5≤a≤0.9.

[0105] In this embodiment, the ratio 'a' is set within the range of 0.5 to 0.9, which widens the area over which the positioning element 92 secures the heat exchanger. This eliminates the need for the small clips used in traditional solutions to secure the bottom of the heat exchanger, reducing component installation and improving overall installation efficiency. Simultaneously, the wide-range clamping and securing of multiple rows of heat exchangers effectively reduces the gaps between them, decreasing the likelihood of abnormal noise and damage to the heat exchanger fins.

[0106] In some embodiments of this application, the positioning member 92 may include a support plate 921, which is disposed above the multi-row heat exchanger.

[0107] The positioning element 92 may include a first baffle 922, which is connected to the support plate 921. (See reference) Figure 14The first baffle 922 extends along the length of the support plate 921.

[0108] The positioning element 92 may include a plurality of second baffles 923, which are spaced apart along the length of the support plate 921. (Continue to refer to...) Figure 14 Multiple second baffles 923 are connected to the support plate 921, and a fixing part is defined between the multiple second baffles 923, the first baffle 922 and the support plate 921.

[0109] refer to Figure 6 The support plate 921 is connected to the top of the multi-row heat exchanger. The first baffle and the second baffle clamp the multi-row heat exchanger. The top of the heat exchanger is used as the installation reference to achieve "top-down" compression and fixing, avoiding the need to add extra supports at the top or bottom of the heat exchanger and saving the number of parts.

[0110] In this embodiment, the first baffle 922 and the second baffle 923 form a bidirectional limiting mechanism to prevent the multi-row heat exchanger from displacing along its own thickness direction. Multiple second baffles 923 are provided, which improves the tight connection of the multi-row heat exchanger while reducing material usage, thus achieving a balance between lightweight design and rigidity.

[0111] In some embodiments of this application, the positioning member 92 may include a mounting plate 925, which is connected to the bracket body 91. The two ends of the mounting plate 925 in the thickness direction of the housing 1 are respectively connected to the support plate 921 and the housing 1.

[0112] refer to Figure 6 The front end of the mounting plate 925 is connected to the front panel, and the rear end of the mounting plate 925 is connected to the support plate 921, so that the front and rear ends of the positioning member 92 are respectively connected to the front panel and the multi-row heat exchanger. This arrangement forms a tension structure that runs through the thickness of the housing 1 (front-rear direction), integrating the heat exchanger, motor bracket 9, and front panel into an integral frame, thereby improving the drop resistance of the housing 1.

[0113] In some embodiments of this application, the positioning element 92 is an integral structure, which reduces the assembly process and improves the installation efficiency of the motor bracket 9.

[0114] In some embodiments of this application, reference continues to be made to Figure 14 The positioning element 92 may include a guide flange 924, one end of which is connected to the bottom end of the first baffle 922, and the other end extends downward in a direction away from the heat exchanger.

[0115] In this embodiment, the guide flange 924 makes the bottom of the clamping position flared, which facilitates the assembly between the positioning part 92 and the heat exchanger and improves the production efficiency of the air conditioner outdoor unit 100.

[0116] In the example row, one end of the first baffle 922 is bent to form a guide flange 924. This guide flange 924 is formed by bending the first baffle 922 in a direction away from the multi-row heat exchangers. During installation, an external force applied to the guide flange 924 can cause a slight deformation of the first baffle 922, relatively expanding the distance between the first and second baffles, thus facilitating the embedding of the multi-row heat exchangers into the fixing part. Simultaneously, the guide flange 924 ensures accurate alignment between the outermost second heat exchanger 5 and the first baffle 922, making installation easier for the operator.

[0117] Of course, in some other embodiments, the connection between the guide flange 924 and the first baffle 922 can also be the welding or bonding method commonly used in the art.

[0118] In some embodiments of this application, the partition 2 has a first side facing the fan cavity 14, and a portion of the first side is recessed into the compressor cavity 15 to form a clearance portion 21, which avoids the installation and operation of the outdoor fan 3.

[0119] By setting a clearance part 21 on the partition 2, the outdoor fan 3 is cleared, and the size of the compressor chamber 15 is reduced without affecting the pipeline layout, thereby improving the utilization rate of the internal space of the casing 1.

[0120] For example, refer to Figure 16 The clearance portion 21 is a pressed structure that protrudes from the middle of the partition 2 toward the press chamber 15. The clearance portion 21 of the pressed structure has high strength, and by setting the clearance portion 21 of the pressed structure, it is ensured that the partition 2 has sufficient support capacity and structural strength.

[0121] The clearance section 21 is arc-shaped, and the arc-shaped clearance section 21 forms an equidistant gap with the outer contour of the outdoor fan 3, reducing backflow turbulence. In practical applications, the radius of the clearance section 21 is determined by the radius of the outdoor fan 3.

[0122] In some embodiments of this application, reference is made to Figure 17 The edge connecting the clearance part 21 to the first side surface is provided with a rounded corner, and the radius of the rounded corner is R. Wherein, R≤100mm, R≥50mm.

[0123] If the radius R is less than 50mm, the partition 2 will fit tightly against the mold surface, requiring greater ejection force during demolding and easily damaging the surface of the partition 2. Therefore, to facilitate better forming and demolding of the partition 2 in the mold, the radius of the rounded corner is set to not less than 50mm. In the specific design, a suitable and specific parameter should be selected to improve the production efficiency of the partition 2.

[0124] If the radius R is greater than 100mm, the fillet radius will be too large. An excessively large fillet radius not only makes it difficult to control the forming quality of the partition 2, but also occupies the effective space of the press cavity 15, reducing the margin for the compressor 19 and its piping layout. Therefore, to ensure better forming of the partition 2 in the mold, the radius of the fillet radius is set to no more than 100mm. This fully utilizes the internal space of the housing 1 without affecting the piping layout, thus improving the product's market competitiveness.

[0125] In some embodiments of this application, the edge of the avoidance part 21 connected to the first side surface is provided with a rounded corner, the radius of the rounded corner is R, 50mm≤R≤100mm.

[0126] In this embodiment, a rounded corner with a radius R in the range of 50mm to 100mm is provided at the connection between the first side of the partition 2 and the clearance part 21, so that the partition 2 can be better formed and demolded in the mold. This not only improves the production efficiency of the partition 2, but also does not affect the rigidity of the partition 2, and does not encroach on the layout space of the whole machine, thus maximizing the space utilization of the casing 1.

[0127] A guide ring 18 is provided on the side of the front panel facing the outdoor fan 3, and the distance between the guide ring 18 and the clearance part 21 is not less than 8mm.

[0128] The air guide ring 18 is still subject to millimeter-level displacement or deformation due to temperature, vibration, manufacturing tolerances, and drop impacts. If the distance between the air guide ring 18 and the buffer part 21 is less than 8mm, vibration of the outdoor fan 3 and drop impacts will cause the air guide ring 18 to interfere with the partition 2, resulting in cracks, abnormal noises, or even jamming.

[0129] To avoid interference between the air guide ring 18 and the partition 2, the distance between the air guide ring 18 and the clearance part 21 is set to be no less than 8mm, so that there is a safe distance between the air guide ring 18 and the clearance part 21, and the air guide ring 18 can fully play its guiding role.

[0130] In this embodiment, the air guide ring 18 is partially repositioned at the avoidance part 21 (such as a step, thinning or notch), which not only retains the complete air guiding function of the air guide ring 18, but also avoids expanding the overall size of the machine, thus achieving a compact arrangement.

[0131] The outdoor unit 100 of this utility model provides a tight fit and fixation of the ends of multiple rows of heat exchangers by setting a first end plate 6 and at least one second end plate 7, which reduces the risk of friction caused by gaps between multiple rows of heat exchangers, uneven heat exchange, and noise. At the same time, the improved structure of the motor bracket 9 increases the fixing range of the guide part for the multiple rows of heat exchangers, significantly reducing the number of parts, reducing installation steps, and improving production efficiency.

[0132] 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.

[0133] 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: The housing includes an air inlet, an air outlet, and a first side plate, the first side plate forming one end of the housing in the width direction; 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 fan is located inside the fan cavity and near the air outlet. The heat exchanger has multiple rows, and the multiple rows of heat exchangers are disposed within the fan cavity. The multiple rows of heat exchangers include: The first heat exchanger is located between the air inlet and the outdoor fan; At least one second heat exchanger is located between the air inlet and the first heat exchanger; The first end plate includes: The first plate abuts against the end of the first heat exchanger furthest from the partition; The second plate is connected to the first plate and protrudes relative to the first heat exchanger, and the second plate extends along the height direction of the casing. One or more second end plates, the second end plates comprising: The third plate abuts against the end of the second heat exchanger furthest from the partition plate; Two fourth plates are disposed opposite each other at both ends of the second end plate in the thickness direction of the second heat exchanger. The fourth plates protrude relative to the second heat exchanger and extend along the height direction of the casing. Of the plurality of fourth plates, one that is relatively far from the second plate is connected to the first side plate, and one that is relatively far from the first side plate is connected to the second plate. When there are multiple second end plates, the adjacent fourth plates of two adjacent second end plates are connected to fix multiple rows of heat exchangers.

2. The outdoor unit of the air conditioner according to claim 1, characterized in that, When there is only one second end plate, the fourth plate is provided with a mounting hole for fastener connection, and the first side plate and the second plate are provided with through holes corresponding to the mounting holes. The fastener passes through the through holes and is connected to the mounting hole; wherein, the mounting hole and the projection of the heat exchange tube of the corresponding second heat exchanger on the fourth plate do not overlap.

3. The outdoor unit of the air conditioner according to claim 1 or 2, characterized in that, The first side plate has a connecting portion recessed toward the fan cavity, and the connecting portion is connected to the corresponding fourth plate.

4. The outdoor unit of the air conditioner according to claim 1, characterized in that, The second plate and the fourth plate are provided with reinforcing ribs.

5. The outdoor unit of the air conditioner according to claim 1, characterized in that, The heat exchanger has a first straight section, the thickness of which extends along the thickness direction of the housing. A motor support is disposed within the housing, the motor support comprising: The main support frame is used for installing the outdoor fan. A positioning element is provided at the top of the support body. The positioning element has a fixing part, which is used to clamp the first straight section of the multi-row heat exchanger. The ratio of the length of the fixing part to the length of the first straight section is a, where a ≥ 0.5 and a ≤ 0.

9.

6. The outdoor unit of the air conditioner according to claim 5, characterized in that, The positioning element includes: A support plate is disposed above the heat exchanger; A first baffle is connected to the support plate and extends along the length of the support plate; Multiple second baffles are spaced apart along the length of the support plate. The second baffles are connected to the support plate, and the fixing part is defined between the multiple second baffles, the first baffle, and the support plate.

7. The outdoor unit of the air conditioner according to claim 6, characterized in that, The positioning component further includes a mounting plate connected to the main body of the bracket, wherein the mounting plate is connected to the support plate and the housing at both ends in the thickness direction of the housing, respectively; and / or, the positioning component is an integral structure.

8. The outdoor unit of the air conditioner according to claim 7, characterized in that, The positioning component also includes a guide flange, one end of which is connected to the bottom end of the first baffle, and the other end extends downward in a direction away from the multi-row heat exchangers.

9. The outdoor unit of the air conditioner according to claim 1, characterized in that, The partition has a first side facing the fan cavity, and a portion of the first side is recessed into the compressor cavity to form a clearance portion that avoids the outdoor fan. The edge of the clearance portion that connects to the first side is provided with a rounded corner, and the radius of the rounded corner is R, where R≤100mm and R≥50mm.

10. The outdoor unit of the air conditioner according to claim 9, characterized in that, The housing includes a front panel, and an air guide ring is provided on the side of the front panel facing the outdoor fan. The distance between the air guide ring and the clearance part is not less than 8mm.

Images