Air conditioner outdoor unit

Abstract

The utility model provides an air conditioner outdoor unit, and the air conditioner outdoor unit includes: the casing, the casing includes first side plate and air inlet, the baffle is located in the casing, so that the inside space of casing is divided into fan chamber and press chamber, the outdoor heat exchanger is located in the casing, and the outdoor heat exchanger includes at least two rows of heat exchanger, and the both ends of heat exchanger have multiple elbow pipes along the height direction of casing, the fixed part is located in the one end of outdoor heat exchanger away from the baffle, and the fixed part includes: at least two rows of fixed parts, the mounting hole is located on the side of fixed part, the via hole is located on the first side plate to be connected with the first side plate and fixed part by fastener, the utility model sets up the fixed part, not only realizes the mutual fixation between heat exchanger, but also connects the whole outdoor heat exchanger stably on the casing, does not need the assembly and use of sheet metal end plate, reduces the cost, improves assembly efficiency, reduces the scrappage caused by sheet metal end plate leakage at the same time.

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 an important component of an air conditioning system. Its main function is to dissipate heat from the indoor environment to the outdoor environment through a heat exchanger, thereby achieving a cooling or heating effect. It typically includes components such as the casing and the outdoor heat exchanger, among which the outdoor heat exchanger is the key component for achieving heat exchange.

[0003] Outdoor heat exchangers are typically multi-row heat exchangers, and their effective fixing is beneficial to improving product quality. If the fixing of a multi-row heat exchanger is misaligned, the pipes are prone to friction and collision during transportation. This can lead to minor issues such as fins collapsing and affecting heat exchange, or even serious issues such as pipe breakage, causing refrigerant leakage and resulting in more severe consequences.

[0004] In related technologies, outdoor heat exchangers 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. The end plates only fix the outermost row of heat exchangers. To accommodate the overall clamping of multiple rows of heat exchangers, there are solutions using wire ties to bind and fix the bends of adjacent heat exchangers, or using fasteners to fix the bends of adjacent heat exchangers, thus fixing at least two rows of heat exchangers. However, wire ties have low strength, are prone to aging and breakage, and have low assembly efficiency. Fasteners require end plates to complete the fixing of the outdoor heat exchangers, and the end plates need to be placed in advance before the heat exchangers are processed, which can easily lead to omissions or misinstallation, resulting in a significantly increased scrap rate and affecting the reliability and stability of the air conditioning system. 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 a first side panel and an air inlet, the first side panel forming one end of the housing in the width direction, and the top and bottom ends of the housing being opposite ends in the height direction. A partition is provided inside the housing to divide the internal space of the housing into a fan chamber and a compressor chamber; An outdoor heat exchanger, disposed within the casing and near the air inlet, exchanges heat with outdoor air entering through the air inlet. The outdoor heat exchanger includes at least two rows of heat exchangers, and each heat exchanger has multiple bends arranged along the height direction of the casing at both ends in its extending direction. Through holes are provided on the first side plate for fasteners to pass through; A fixing member is provided at the end of the outdoor heat exchanger away from the partition plate, the fixing member comprising: The fixing part is provided with at least two rows, and the at least two rows of the fixing parts are respectively sleeved on at least two rows of the bent pipes of the outdoor heat exchanger to fix at least two rows of the heat exchanger; A mounting hole is provided on the side of the fastener near the first side plate, wherein the fastener passes through the through hole and is connected to the mounting hole to connect the first side plate and the fastener.

[0006] The above technical solution has the following advantages or beneficial effects: by setting a fixing part and mounting holes on the fixing part, the fixing part can not only play a relatively fixing role for at least two rows of heat exchangers, reducing the risk of friction, uneven heat exchange and noise caused by the gap between multiple rows of heat exchangers, but also realize the fixed connection between the outdoor heat exchanger and the casing, eliminating the need for the assembly and use of sheet metal end plates, reducing costs, improving assembly efficiency, and reducing scrap caused by missing sheet metal end plates.

[0007] According to an embodiment of this disclosure, the fastener has protrusions on both sides of the outdoor heat exchanger in the thickness direction, the protrusions are disposed in the middle of the fastener to avoid the fixing part, and the mounting hole is disposed on the protrusions.

[0008] The above technical solution has the following advantages or beneficial effects: by setting the boss, the gap between the outdoor heat exchanger and the first side plate can be made up, and the fasteners can be prevented from being fixed to the first side plate due to the certain distance between the outdoor heat exchanger and the first side plate, thereby improving the connection reliability between the outdoor heat exchanger and the first side plate.

[0009] According to an embodiment of this disclosure, the fastener has a reinforcing member inside, the reinforcing member has a connecting hole, and the connecting hole is coaxially arranged with the mounting hole for fastener connection.

[0010] The above technical solution has the following advantages or beneficial effects: by setting a reinforcing member inside the fastener, the strength of the fastener is improved; on the other hand, the reinforcing member is provided with a connecting hole coaxial with the mounting hole. When the fastener passes through the through hole and connects to the mounting hole, it is also connected to the connecting hole, forming a double load-bearing structure, which significantly improves the fixing strength of the fastener, thereby ensuring the stability of the connection between the outdoor heat exchanger and the first side plate.

[0011] According to an embodiment of this disclosure, the dimension of the fastener in the extension direction of the bend is a, and the dimension of the bend in its own extension direction is b, wherein 1mm≤(ab) and (ab)≤3mm.

[0012] The above technical solution has the following advantages or beneficial effects: If the difference between dimension a and dimension b is less than 1mm, the size of the fastener for the bend will be insufficient, failing to provide stable and reliable support and constraint for the bend. If the difference between dimension a and dimension b is greater than 3mm, the size of the fastener in the extension direction of the bend will be too large, easily interfering with the front end of the housing, while also increasing its own weight and quantity, leading to increased overall costs in mass production. Setting the difference between dimension a and dimension b within a reasonable range of 1-3mm can stably support and fix the bend while avoiding unnecessary material waste and assembly interference, balancing fixing performance and manufacturing costs.

[0013] According to an embodiment of this disclosure, the fixing part is an elongated oval hole extending along the extension direction of the bent pipe. The cross-sectional profile of the fixing part perpendicular to the extension direction of the bent pipe includes two arc segments arranged opposite each other along the height direction of the housing. The center distance between the two arc segments is c. The dimension of the bent pipe in the height direction of the housing is d, where 0.3mm≤(cd) and (cd)≤0.5mm.

[0014] The above technical solution has the following advantages or beneficial effects: A difference of less than 0.3mm between dimensions c and d increases the assembly difficulty of the fasteners and reduces installation efficiency. A difference greater than 0.5mm results in a large amount of movement within the fastener for the bend. When the outdoor unit of the air conditioner is running, vibration may cause the bend to sway and collide within the fastener, failing to achieve effective fixation. Setting the difference between dimensions c and d within a reasonable range of 0.3-0.5mm ensures that the fastener can smoothly fit onto the bend, improving assembly efficiency, while effectively constraining the bend's sway range and preventing collisions between the bend and the fastener.

[0015] According to an embodiment of this disclosure, a limiting part is provided on the side wall of the fixing part extending along the height direction of the housing. The limiting part abuts against the side wall of the bent tube. The dimension of the limiting part in the width direction of the housing is e, where 0.3mm≤e and e≤0.8mm.

[0016] The above technical solution has the following advantages or beneficial effects: When dimension e is less than 0.3mm, the limiting part cannot effectively squeeze the bend after the fixing part is inserted into it, causing the fixing part to gradually slip off during transportation vibration, which in turn leads to the failure of the entire outdoor heat exchanger's fixing and its connection with the casing. When dimension e is greater than 0.8mm, it increases the assembly difficulty of the fixing part and reduces assembly efficiency. At the same time, the excessively large limiting part will squeeze the bend, and long-term pressure can easily cause micro-cracks in the bend. Drops during transportation or vibrations during the operation of the outdoor air conditioning unit can cause the micro-cracks to expand, resulting in refrigerant leakage. Setting dimension e within a reasonable range of 0.3-0.8mm ensures a tight fit between the fixing part and the bend, improving the fixing stability of the outdoor heat exchanger and the connection stability with the casing, while avoiding damage to the bend.

[0017] According to an embodiment of this disclosure, an elastic cantilever is formed on the side wall of the fixing part extending along the height direction of the housing. A blocking part is provided on the elastic cantilever, and the blocking part abuts against the side of the bend facing the outdoor heat exchanger to restrict the fixing member from coming out along the extension direction of the bend.

[0018] The above technical solution has the following advantages or beneficial effects: By setting a blocking part on the elastic cantilever, during installation, the bent pipe squeezes the elastic cantilever to produce elastic deformation. The fastener can be easily fitted onto the bent pipe with just a simple pressing action, achieving rapid, tool-free assembly of the fastener and significantly improving production efficiency. After the fastener is installed in place, the elastic restoring force of the elastic cantilever will firmly abut the blocking part against the inside of the bent pipe, preventing the fastener from coming off.

[0019] According to an embodiment of this disclosure, the blocking portion includes: The blocking surface has a connecting end and a free end that are arranged opposite to each other. The connecting end is connected to the first sidewall, and the blocking surface abuts against the side of the bent pipe facing the outdoor heat exchanger. A guide ramp is located near the heat exchanger relative to the blocking surface. One end of the guide ramp is connected to the free end, and the other end extends to connect with the first sidewall.

[0020] The above technical solution has the following advantages or beneficial effects: by setting a blocking surface and a guide slope, the assembly performance and fixing reliability of the fastener are further optimized. Specifically, the guide slope reduces the impact during the assembly process of the fastener, allowing it to be smoothly assembled onto the bend. After assembly, the blocking surface engages with the inside of the bend, preventing the fastener from coming out and ensuring the stability and reliability of the fastener's support and fixing of the bend.

[0021] According to an embodiment of this disclosure, the ratio between the dimension of the blocking part in the width direction of the housing and the diameter of the bend is f, where 0.3 ≤ f and f ≤ 0.4.

[0022] The above technical solution has the following advantages or beneficial effects: If the ratio f is less than 0.3, it means that the protruding size of the blocking part is less than 1 / 3 of the diameter of the bend, resulting in insufficient insertion of the blocking part and a small contact area between the blocking part and the bend, which easily leads to anti-detachment failure. If the ratio f is greater than 0.4, the protruding size of the blocking part is too large, which increases the force required for fastener assembly and increases assembly difficulty. By setting the ratio f within a reasonable range of 0.3-0.4, the fastener can be smoothly fitted onto the outside of the bend without causing assembly difficulties.

[0023] According to an embodiment of this disclosure, the housing further includes a chassis, the bottom end of the outdoor heat exchanger is supported on the chassis, and a plurality of fasteners are provided along the height direction of the housing, one of the plurality of fasteners abutting against the chassis.

[0024] The above technical solution has the following advantages or beneficial effects: By setting multiple fixing components along the height of the casing, the bends of adjacent heat exchangers can be firmly connected at multiple locations, improving the fixing stability of the outdoor heat exchanger; at the same time, the connection of multiple fixing components with the first side plate makes the fixing of the outdoor heat exchanger to the casing more secure and reliable. By setting one of the multiple fixing components to abut against the chassis, deformation caused by direct impact to the chassis of the bends is effectively prevented, avoiding leakage of the bends due to impact, and improving the operational reliability of the outdoor air conditioning unit. 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 connection diagram of the fastener according to one embodiment of the present disclosure; Figure 5 yes Figure 4 A magnified view of point C; Figure 6 This is an assembly diagram of the fastener according to one embodiment of the present disclosure; Figure 7 This is a partial schematic diagram of a fastener installed on an outdoor heat exchanger according to an embodiment of the present disclosure; Figure 8This is a schematic diagram of the connection between the fastener and the first side plate according to one embodiment of the present disclosure; Figure 9 This is a schematic diagram of a fastener installed on an outdoor heat exchanger according to one embodiment of the present disclosure; Figure 10 This is a structural schematic diagram of the fastener according to one embodiment of the present disclosure; Figure 11 This is a schematic diagram of the fastener from another perspective according to one embodiment of the present disclosure; Figure 12a yes Figure 11 A magnified view of a portion at point A; Figure 12b yes Figure 11 A magnified view of the area at point B; Figure 13 This is a schematic diagram of the fastener from a side view according to an embodiment of the present disclosure; Figure 14 This is a top view of the fastener according to one embodiment of the present disclosure; Figure 15 yes Figure 14 AA section view; Figure 16 yes Figure 14 BB cross-sectional view.

[0026] In the above figures: outdoor air conditioner unit 100; casing 1; air inlet 11; air outlet 12; air outlet grille 13; first side plate 14; through hole 141; fastener 142; chassis 15; outdoor heat exchanger 2; heat exchanger 21; bend 211; outdoor fan 3; partition 4; fan cavity 51; compressor cavity 52; fastener 6; fixing part 61; elastic cantilever 611; blocking part 62; blocking surface 621; connecting end 6211; free end 6212; guide slope 622; boss 63; mounting hole 64; limiting part 65. 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 to 16 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 installed 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 100 is installed indoors and exchanges heat with the indoor environment.

[0034] refer to Figure 1 , Figure 2 In one illustrative embodiment of the air conditioner outdoor unit 100 provided by this utility model, the air conditioner outdoor unit 100 may include 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] The housing 1 may include a first side plate 14, which is located at one end of the housing in the width direction and is used to form one side boundary of the fan cavity 51. The first side plate 14 may form a side wall defining the fan cavity 51.

[0037] 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.

[0038] refer to Figure 3 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.

[0039] Outdoor air outside the casing 1 enters the casing 1 through the air inlet 11 and is finally discharged to the outside through the air outlet 12.

[0040] 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.

[0041] 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.

[0042] Continue to refer to Figure 3 The outdoor unit 100 of the air conditioner may include a partition 4. The partition 4 is disposed in the housing 1 and is used to divide the accommodating space inside the housing 1 into a fan chamber 51 and a compressor chamber 52.

[0043] The partition 4 is disposed inside the housing 1 along the height direction of the housing 1. In this embodiment, the fan chamber 51 and the compressor chamber 52 are located on the left and right sides of the housing 1, respectively.

[0044] In some embodiments of this application, the air inlet 11 may be located on the rear side of the housing 1, and the air outlet 12 may be located on the front side of the housing 1. In this embodiment, the air outlet 12 is located on the front panel of the housing 1.

[0045] 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 51.

[0046] In some embodiments of this application, the outdoor unit 100 of the air conditioner may include an outdoor heat exchanger 2, which is disposed inside the casing 1 to exchange heat with outdoor air entering the casing 1 through the air inlet. The outdoor heat exchanger 2 is positioned close to the air inlet 11.

[0047] The outdoor heat exchanger 2 can be a plate heat exchanger. In order to increase the heat exchange area of ​​the outdoor heat exchanger 2 while minimizing the size of the outdoor unit 100, the outdoor heat exchanger 2 can be set as an L-shaped heat exchanger in this embodiment.

[0048] When outdoor heat exchanger 2 is an L-shaped heat exchanger, it is installed on the air inlet side. That is, refer to... Figure 2 One part of the outdoor heat exchanger 2 corresponds to the air inlet 11 on the rear side of the casing 1, and the other part of the outdoor heat exchanger 2 corresponds to the air inlet 11 on the side of the casing 1.

[0049] In some embodiments of this application, the outdoor unit 100 of the air conditioner may include an outdoor fan 3, which is disposed within the fan cavity 51. The outdoor fan 3 may be an axial flow fan.

[0050] refer to Figure 3 The outdoor fan 3 can be set towards the air outlet 12, that is, the outdoor fan 3 is set on the side of the outdoor heat exchanger 2 away from the air inlet 11.

[0051] In this embodiment, the outdoor fan 3 is installed between the outdoor heat exchanger 2 and the air outlet 12. Under the action of the outdoor fan 3, outdoor air enters the fan chamber 51 through the air inlet 11. The outdoor air exchanges heat with the outdoor heat exchanger 2 in the fan chamber 51. 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.

[0052] The outdoor fan 3 may include two axial flow fans spaced apart in a vertical direction. In this embodiment, the housing 1 has air outlets 12 that correspond one-to-one with the two axial flow fans.

[0053] The outdoor fan 3 with dual axial flow can provide higher air volume and more uniform airflow distribution, improve heat exchange efficiency, and ensure sufficient airflow, thereby enabling more effective heat exchange.

[0054] The outdoor unit 100 of the air conditioner may include a compressor, which is located in the compressor chamber 52.

[0055] 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.

[0056] 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, condenser, throttling device, and evaporator, enabling it to perform indoor cooling or heating.

[0057] An air conditioner may include an indoor unit, namely an indoor air conditioner unit, which includes an indoor heat exchanger 21.

[0058] Indoor heat exchanger 21 and outdoor heat exchanger 2 are used as condensers or evaporators. When indoor heat exchanger 21 is used as a condenser, the air conditioner is used as a heater in heating mode, and when indoor heat exchanger 21 is used as an evaporator, the air conditioner is used as a cooler in cooling mode.

[0059] 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.

[0060] The compressor compresses the refrigerant gas into a high-temperature, high-pressure state and discharges the compressed refrigerant gas, which then flows into the condenser.

[0061] 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.

[0062] 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.

[0063] 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.

[0064] 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.

[0065] refer to Figure 3 The outdoor heat exchanger 2 may include at least two rows of heat exchangers 21. These at least two rows of heat exchangers 21 may be arranged along the airflow direction, and may be arranged in parallel to improve heat exchange efficiency. Typically, double or triple rows of heat exchangers are used.

[0066] Several copper tubes are arranged in the heat exchanger 21 along the height direction of the casing 1. The axial direction of the multiple copper tubes is the same as the length direction of the heat exchanger 21, and the multiple copper tubes are inserted on the fins of the heat exchanger 21.

[0067] Multiple bends 211 are arranged at both ends of the heat exchanger 21 along the height of the casing 1, and each bend can connect two adjacent copper tubes. The copper tubes contain heat exchange medium, and the bends 211 allow the flow of the heat exchange medium between multiple copper tubes.

[0068] In some embodiments of this application, the outdoor unit 100 of the air conditioner may include a fastener 6. The fastener 6 is located at the end of the outdoor heat exchanger 2 away from the partition 4. It can not only fix at least two rows of heat exchangers 21, but also fix the outdoor heat exchanger 2 to the casing 1. There is no need for the assembly and use of sheet metal end plates, which reduces the scrap caused by the missing sheet metal end plates.

[0069] Specifically, reference Figure 10 The fastener 6 may include a fastening part 61, which has at least two rows. The at least two rows of fastening parts 61 are respectively sleeved on at least two rows of bent pipes 211 of the outdoor heat exchanger 2 to fix at least two rows of outdoor heat exchangers 2.

[0070] In this embodiment, by setting the fixing member 6, the ends of the multi-row heat exchangers 21 are tightly fitted and fixed, reducing the risk of friction, uneven heat exchange, and noise caused by the gaps between the multi-row heat exchangers 21. Compared with the existing technology that uses multiple wire ties or fixing clips for fixing, this not only effectively improves production efficiency but also avoids damage to the fins of the heat exchangers 21.

[0071] The fixing part 61 is sleeved on the outside of the bend 211. By fixing at least two rows of bends 211, it can relatively fix at least two rows of heat exchangers 21, thereby preventing the fins of at least two rows of heat exchangers 21 from being misaligned during production and transportation, and thus protecting the fins and copper tubes of the heat exchangers 21.

[0072] In some embodiments of this application, the first side plate 14 is provided with a through hole 141 for a fastener 142 to pass through. The first side plate 14 and the fixing member 6 can be connected and fixed by a fastener passing through the through hole 141. For example, the fastener 142 can be a bolt or a screw.

[0073] For details, please refer to Figure 10 The fastener 6 may include a mounting hole 64. The mounting hole 64 is provided on the side of the fastener 6 near the first side plate 14. The fastener 142 passes through the through hole 141 and is connected to the mounting hole 64 to connect the first side plate 14 and the fastener 6, thereby achieving a reliable connection between the outdoor heat exchanger 2 and the housing 1.

[0074] When multiple fasteners 6 are installed, the outdoor heat exchanger 2 can be securely connected to the first side plate 14 by fitting the mounting holes 64 of the fasteners 6 onto at least two rows of bent pipes 211 corresponding to the through holes 141.

[0075] In practical use, depending on the size of the outdoor unit of the air conditioner, there are multiple through holes 141 in the height direction of the housing 1. Multiple fasteners 6 can be set along the height direction of the housing 1 corresponding to the through holes 141. Multiple fasteners 6 are set at intervals so that the outdoor heat exchanger is subjected to uniform force from top to bottom, thereby providing a stable fixing and limiting function.

[0076] In some embodiments of this application, the fastener 6 is provided with bosses 63 on both sides of the outdoor heat exchanger 2 in the thickness direction.

[0077] After the bend 211 is fixed by the fastener 6, there will still be a certain gap between the fastener 6 and the first side plate 14 of the housing 1. If the two sides of the fastener 6 are expanded outward as a whole, the weight of the fastener 6 itself will be increased, resulting in a waste of cost.

[0078] By setting a boss, the gap between the outdoor heat exchanger 2 and the first side plate 14 can be filled, and the fastener 6 can be fixed to the first side plate 14 because there is a certain distance between the outdoor heat exchanger 2 and the first side plate 14, thereby improving the connection reliability between the outdoor heat exchanger and the first side plate.

[0079] The two rows of heat exchangers 21 are fixed mainly by passing the bent tube 211 through the fixing part 61. Since the volume of the bent tube 211 at the fin end is small, in order to improve the fixing effect, each row of the two rows of fixing holes 61 on the fixing member 6 includes at least two fixing parts 61.

[0080] The boss 63 is located in the middle of the fastener 6, avoiding at least two fixing parts 61. By avoiding the fixing parts 61, the boss 63 ensures that it will not extend to the fixing parts 61 and affect the bend 21, thus ensuring the structural integrity and functional independence of the two functional areas.

[0081] In some embodiments of this application, the fastener 6 is provided with a reinforcing member inside. By providing a reinforcing member inside the fastener 6, the strength of the fastener 6 is further improved, and cracking is avoided under long-term operation.

[0082] In this embodiment, the reinforcement may include a connecting hole that allows the fastener 142 to pass through, making the fastener 142 more securely connected to the fixing member 6. For example, the reinforcement may be a nut embedded in the boss 63.

[0083] In this embodiment, the connecting hole and the mounting hole 64 are coaxially arranged, so that the fastener 142 can also be connected and fixed with the connecting hole during the process of passing through the through hole 141 to the mounting hole 64, which further improves the connection strength of the fastener 142 on the fixing member 6, thereby making the connection between the outdoor heat exchanger 2 and the first side plate 14 more firm and reliable.

[0084] In some embodiments of this application, the dimension of the fastener 6 in the extension direction of the bend 211 is a, and the dimension of the bend 211 in its own extension direction is b, wherein 1mm≤(ab) and (ab)≤3mm.

[0085] It should be noted that in this embodiment, the extension direction of the bend 211 is the width direction of the housing 1.

[0086] When the difference (ab) is greater than 3mm, the thickness of the fastener 6 will be too long, which will easily interfere with the front end of the housing 1, while increasing its own weight and usage, leading to an increase in overall cost during mass production.

[0087] When the difference (ab) is less than 1mm, the thickness of the fastener 6 will be too small, which will result in insufficient size of the fastener 6 for the bend 211 to pass through and be fixed. This will prevent the fastener 6 from providing stable and reliable support and constraint for the bend 211, affecting the relative fixation reliability of at least two rows of heat exchangers 21 and the connection and fixation stability between the outdoor heat exchanger 2 and the casing 1.

[0088] By setting the difference (ab) within a reasonable range of 1 to 3 mm, it is possible to ensure that the fastener 6 has sufficient dimensions for fixing the bend 21, thereby providing a sufficiently reliable fixing structure for the bend 211, ensuring the firmness and stability of the fixing, and avoiding unnecessary material waste and cost increases.

[0089] In some embodiments of this application, the fixing part 6 is an elongated oval hole extending along the extension direction of the bend 211. The fixing part 61 has two arc segments perpendicular to the cross-sectional profile of the bend 21, and these two arc segments are arranged opposite each other along the height direction of the housing 1.

[0090] refer to Figure 14 The center distance between the two arc segments is c, and the dimension of the bend 211 in the height direction of the housing 1 is d. c and d satisfy: 0.3mm≤(cd) and (cd)≤0.5mm.

[0091] If the difference (cd) is greater than 0.5mm, the length of the fixing part 61 is too large, which will result in the bent pipe 211 having a large amount of room to move within the fixing part 61 of the fixing member 6. When the outdoor unit of the air conditioner is running, vibration may cause the bent pipe to sway and collide back and forth within the fixing member, failing to achieve effective fixing.

[0092] If the difference (cd) is less than 0.3mm, the length of the fixing part 61 is too small. An excessively small fixing part 61 will increase the assembly difficulty of the fastener 6 and reduce the overall installation efficiency.

[0093] By setting the difference (cd) within a reasonable range of 0.3-0.5mm, it is possible to ensure that the bend 211 can be smoothly fitted onto the bend 211, improving installation and production efficiency, while also providing a reasonable constraint on the bend 211 to ensure that the bend 211 will not wobble in the fastener 6 and to avoid collision between the bend 211 and the fastener 6.

[0094] In some embodiments of this application, reference is made to Figure 10 The fixing member 6 may include a limiting part 65, which protrudes from the side wall of the fixing part 61 extending along the height direction of the housing 1. The limiting part 65 abuts against the side wall of the bent pipe.

[0095] In this embodiment, by setting the limiting part 65, the side of the bent pipe 211 is tightly fitted with the fixing member through the limiting part 65 to prevent it from falling off.

[0096] In some embodiments of this application, reference is made to Figure 14 The dimension of the limiting part 65 in the width direction of the housing 1 is e, where 0.3mm≤e and e≤0.8mm.

[0097] When the dimension e is less than 0.3mm, the limiting part 65 will not be able to effectively squeeze the bend 211 after the fixing part 61 is inserted into the bend 211. This will cause the fixing part 6 to gradually slip off during transportation vibration, which will lead to the failure of the fixing of the entire outdoor heat exchanger 2 and the failure of the connection between the entire outdoor heat exchanger 2 and the casing 1, affecting the operational stability of the air conditioner outdoor unit 100.

[0098] When the dimension e is greater than 0.8mm, the limiting part 65 protrudes a large size from the side wall of the fixing part 61, which increases the assembly difficulty of the fixing part 6 and reduces the assembly efficiency. At the same time, the excessively large limiting part 65 will squeeze the bend 21. Long-term pressure can easily cause microcracks to appear in the bend 211. Dropping during transportation or vibration during operation of the outdoor unit 100 of the air conditioner can cause the microcracks to expand, resulting in refrigerant (heat exchange medium) leakage.

[0099] In this embodiment, the dimension e of the limiting part 65 in the width direction of the housing 1 is set within a reasonable range of 0.3-0.8mm, so that the fixing part 6 and the bend 211 fit tightly together, which improves the fixing stability of the outdoor heat exchanger 2 and the connection stability with the housing 1, while avoiding damage to the bend 211.

[0100] In some embodiments of this application, an elastic cantilever 611 is formed on the side wall of the fixing part 61 extending along the height direction of the housing 1. The elastic cantilever 611 is configured to elastically deform at its free end in the direction of approaching the opposite side wall of the same fixing part 61 and away from the opposite side wall of the same fixing part 61.

[0101] For example, one end of the elastic cantilever 611 is connected to the side wall of the fixed part 61, and the other end is spaced apart from the side wall to which it is connected as a free end. When an external force presses the elastic cantilever 611 outward, the free end of the elastic cantilever 611 can be moved away from the opposite side wall.

[0102] In some embodiments of this application, a blocking portion 62 is provided on the elastic cantilever 611, which abuts against the side of the bend 211 facing the outdoor heat exchanger 2 to restrict the fastener 6 from disengaging along the extension direction of the bend 211. Exemplarily, the blocking portion 62 may be provided near the free end of the elastic cantilever 611.

[0103] In this embodiment, the elastic cantilever 611 allows the bent tube 211 to easily push the fastener 6 aside during installation. The bent tube 211 is a U-shaped tube. During installation, the blocking part 62 moves away from the opposite side wall due to the pressure from the closed end of the bent tube 211. After passing the closed end at the bottom of the U-shaped tube, the elastic cantilever 611 returns to its original shape, and the blocking part 62 can be locked inside the bent tube, thus limiting the position of the fastener 6.

[0104] By cooperating with the elastic cantilever 611 and the blocking part 62, the design greatly simplifies the installation of the fastener 6, realizes the fastener 6 to be quickly and conveniently assembled, reduces the assembly time, and significantly improves production efficiency.

[0105] In some embodiments of this application, the limiting part 65 and the blocking part 62 are disposed opposite to each other. The cooperation between the limiting part 65 and the blocking part 62 facilitates the assembly of the fastener 6, effectively fixes the bent pipe 211, and improves the fixation firmness.

[0106] In some embodiments of this application, the blocking part 62 may include a blocking surface 621. The blocking surface 621 abuts against the side of the bend 211 facing the outdoor heat exchanger 2, that is, the blocking surface 621 is engaged inside the bend 211 to prevent the fixing member 6 from coming out.

[0107] In some embodiments of this application, the blocking portion 62 may include a guide ramp 622, which is close to the end face of the heat exchanger 21 relative to the blocking surface 621.

[0108] In this embodiment, the guide slope 622 can provide guidance for the bend 211 to enter the fixing part 61, so that it can smoothly open the blocking part 62. After the closed end of the bend 211 passes through, the blocking part 62 is reset by the elastic cantilever 611, and the final limit is completed by locking it inside the bend.

[0109] Specifically, the blocking surface 621 has a connecting end 6211 and a free end 6212 that are arranged opposite to each other. The connecting end 6211 extends to the free end 6212 to form the blocking surface 621. The free end 6212 is the protrusion that the bend 211 needs to cross during installation, while the connecting end 6211 serves as the force-bearing point of the blocking surface 621 and is connected to the first side wall 611.

[0110] One end of the guide ramp 622 is connected to the free end 6212, and the other end extends to the elastic cantilever 611. This not only limits the orientation of the guide ramp 622, ensuring the smoothness of the process when the bend 211 passes over the free end 6212 and ensuring the smoothness of the installation of the fastener 6, but also ensures that the side of the blocking part 61 is connected to the elastic cantilever 611, which can reduce the risk of the blocking part 62 breaking and increase the reliability of the fastener 6.

[0111] When the fastener 6 is subjected to a falling impact, if the fastener 6 and the bend 211 show a tendency to detach, the blocking surface 621 that abuts against the bend 211 will block this tendency to move, ensuring that the fastener 6 cannot detach from the bend, thereby achieving reliable anti-detachment fixation.

[0112] In some embodiments of this application, the ratio between the dimension g of the blocking part 62 in the width direction of the housing 1 and the diameter of the bend 211 is f, where 0.3≤f and f≤0.4.

[0113] When the ratio f is less than 0.3, it means that the size of the relative elastic cantilever 611 of the blocking part is less than 1 / 3 of the diameter of the bend, which can easily lead to insufficient insertion of the blocking part 62. The contact area between the blocking part 62 and the bend 211 is small, which can easily lead to failure of the anti-detachment mechanism, affecting the fixed reliability of the outdoor heat exchanger 2 and its fixed connection with the casing 1.

[0114] If the ratio f is greater than 0.4, the size of the relative elastic cantilever 611 of the blocking part 62 is too large. The force required for the fastener assembly will increase, which may cause assembly difficulties or the risk of not being able to install it. While affecting the assembly efficiency, the excessively large blocking part will increase the risk of breakage of the elastic cantilever 611, resulting in a decrease in the reliability of the fastener 6.

[0115] To ensure reliable fixation of the fixing part 61 to the bend 211, the ratio of the protrusion of the blocking part 62 to the diameter of the bend 211 is set within a reasonable range of 0.3 to 0.4. This allows the fixing part 6 to be smoothly fitted onto the outside of the bend 211 and effectively locked onto the inside of the bend 211, thus achieving reliable fixation of the fixing part 6 to the bend 211 without causing assembly difficulties and improving assembly efficiency.

[0116] In some embodiments of this application, multiple fasteners 6 are provided along the height direction of the housing 1. By fitting multiple fasteners 6 onto at least two rows of bent pipes 211 of the outdoor heat exchanger 2, the outdoor heat exchanger is subjected to uniform force from top to bottom, thereby providing a stable fixing and limiting function.

[0117] For example, both the top bend 211 and the bottom bend 211 of the outdoor heat exchanger 2 can be connected to the fastener 6.

[0118] In some embodiments of this application, the housing 1 may include a chassis 15, which forms the bottom of the housing 1. The chassis 15 can support core functional components such as the compressor and outdoor fan 3 located inside the housing 1, thereby providing a stable and reliable structural foundation for the entire outdoor unit.

[0119] In this embodiment, reference Figure 6 The bottom of the outdoor heat exchanger 2 is supported on the chassis 15, and one of the multiple fasteners 6 abuts against the chassis 15, which can effectively protect the bent pipe 211 at the bottom of the heat exchanger 21.

[0120] Specifically, a fixing component 6 is located at the bottom of the outdoor heat exchanger 2, abutting against the chassis 15. This effectively prevents the fins of the heat exchanger 21 from deforming under impact, thus preventing direct collision between the bent pipe 211 and the chassis 15. This avoids damage and leakage to the bent pipe 211 due to impact, ensuring the operational reliability of the outdoor air conditioning unit 100. The installation of multiple fixing components 6 allows the outdoor heat exchanger 2 to be stably installed inside the casing 1, preventing it from shaking or shifting during operation or transportation.

[0121] 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.

[0122] 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 a first side panel and an air inlet, the first side panel forming one end of the housing in the width direction, and the top and bottom ends of the housing being opposite ends in the height direction of the housing. A partition is provided inside the housing to divide the internal space of the housing into a fan chamber and a compressor chamber; An outdoor heat exchanger, disposed within the casing and near the air inlet, exchanges heat with outdoor air entering through the air inlet. The outdoor heat exchanger includes at least two rows of heat exchangers, and each heat exchanger has multiple bends arranged along the height direction of the casing at both ends in its extending direction. Through holes are provided on the first side plate for fasteners to pass through; A fixing member is provided at the end of the outdoor heat exchanger away from the partition plate, the fixing member comprising: The fixing part is provided with at least two rows, and the at least two rows of the fixing parts are respectively sleeved on at least two rows of the bent pipes of the outdoor heat exchanger to fix at least two rows of the heat exchanger; A mounting hole is provided on the side of the fastener near the first side plate, wherein the fastener passes through the through hole and is connected to the mounting hole to connect the first side plate and the fastener.

2. The outdoor unit of the air conditioner according to claim 1, characterized in that, The fastener has protrusions on both sides in the thickness direction of the outdoor heat exchanger. The protrusions are located in the middle of the fastener, avoiding the fixing part. The mounting hole is located on the protrusion.

3. The outdoor unit of the air conditioner according to claim 2, characterized in that, The fastener has a reinforcing member inside, and the reinforcing member has a connecting hole. The connecting hole is coaxially arranged with the mounting hole for the fastener to be connected.

4. The outdoor unit of the air conditioner according to claim 1, characterized in that, The dimension of the fastener in the extension direction of the bend is a, and the dimension of the bend in its own extension direction is b, wherein 1mm≤(ab) and (ab)≤3mm.

5. The outdoor unit of the air conditioner according to claim 1, characterized in that, The fixing part is an elongated oval hole that extends through the bending tube along its extension direction. The cross-sectional profile of the fixing part perpendicular to the extension direction of the bending tube includes two arc segments arranged opposite each other along the height direction of the housing. The center distance between the two arc segments is c. The dimension of the bending tube in the height direction of the housing is d, where 0.3mm≤(cd) and (cd)≤0.5mm.

6. The outdoor unit of the air conditioner according to claim 1, characterized in that, A limiting part is provided on the side wall of the fixing part extending along the height direction of the housing. The limiting part abuts against the side wall of the bend. The dimension of the limiting part in the width direction of the housing is e, where 0.3mm≤e and e≤0.8mm.

7. The outdoor unit of the air conditioner according to claim 1, characterized in that, An elastic cantilever is formed on the side wall of the fixing part extending along the height direction of the housing. A blocking part is provided on the elastic cantilever. The blocking part abuts against the side of the bend facing the outdoor heat exchanger to prevent the fixing part from coming out along the extension direction of the bend.

8. The outdoor unit of the air conditioner according to claim 7, characterized in that, The blocking part includes: The blocking surface has a connecting end and a free end arranged opposite to each other. The connecting end is connected to the first sidewall, and the blocking surface abuts against the side of the bent pipe facing the outdoor heat exchanger. A guide ramp is located near the heat exchanger relative to the blocking surface. One end of the guide ramp is connected to the free end, and the other end extends to connect with the first sidewall.

9. The outdoor unit of the air conditioner according to claim 7, characterized in that, The ratio between the dimension of the blocking part in the width direction of the housing and the diameter of the bend is f, where 0.3 ≤ f and f ≤ 0.

4.

10. The outdoor unit of an air conditioner according to any one of claims 1 to 9, characterized in that, The housing also includes a chassis, the bottom of the outdoor heat exchanger is supported on the chassis, and multiple fasteners are provided along the height direction of the housing, one of which abuts against the chassis.

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