Top air outlet type air conditioner outdoor unit

Abstract

The utility model discloses a top air outlet type air conditioner outdoor unit, and relates to the technical field of air conditioners. The top air outlet type air conditioner outdoor unit comprises a machine shell, an outdoor heat exchanger, a compressor, a fan and an air guide ring. The machine shell comprises a machine shell air outlet and a machine shell air inlet, the machine shell air outlet is formed in the top of the machine shell, and the machine shell air inlet is formed in the periphery of the machine shell. The outdoor heat exchanger, the compressor, the fan and the air guide ring are arranged in the machine shell, the outdoor heat exchanger is close to an air inlet of the machine shell, and the fan is close to an air outlet of the machine shell. A through cavity communicated with the air outlet of the machine shell is defined in the air guide ring, and at least part of the fan extends into the through cavity; a first gap is formed between the outer edge of the fan and the inner wall of the air guide ring in the first direction. The lug boss is arranged on the inner wall of the air guide ring; a second gap is formed between the outer edge of the fan and the lug boss along the first direction; the size d of the second gap in the first direction and the size D of the first gap in the first direction meet a relational expression dlt; and D, preparing. According to the top air outlet type air conditioner outdoor unit, the protruding part is arranged on the inner wall of the air guide ring so that the gap between the outer edge of the fan and the inner wall of the air guide ring can be reduced, and therefore axial leakage of air and noise of the fan are reduced.

Description

Technical Field

[0001] The present application relates to the technical field of air conditioning, and in particular to a top-outlet air conditioning outdoor unit. Background Art

[0002] The fan is an important part of the indoor unit of the air conditioner. It plays an important role in the normal operation and energy efficiency of the outdoor unit of the air conditioner. The fan drives the air to circulate through the surface of the outdoor unit heat exchanger to achieve air heat exchange and condenser heat dissipation. The operation of the fan can also speed up the heat exchange efficiency between the air and the radiator.

[0003] In the outdoor unit of the top-outlet air conditioner, the fan is usually arranged near the air outlet of the outdoor unit. In order to improve the efficiency and performance of the fan, an air guide ring is usually arranged at the air outlet of the outdoor unit. A through cavity is defined inside the air guide ring, and the fan at least partially extends into the through cavity, so that the air guide ring can effectively guide and control the airflow generated by the fan. A certain gap is usually left between the outer edge of the fan and the inner wall of the through cavity, which can prevent the fan from colliding with the air guide ring during operation and facilitate the assembly of the fan and the air guide ring.

[0004] When the fan is running, air easily leaks in the axial direction (i.e. the direction parallel to the fan axis) from the gap between the outer edge of the fan blade and the inner wall of the air guide ring cavity, resulting in a decrease in air flow. This not only reduces the fan efficiency, but also generates noise and vibration, which has a negative impact on the performance and service life of the fan.

[0005] In view of this, this application is filed. Utility Model Content

[0006] In response to the shortcomings in the related art, the present application provides a top-outlet air-conditioning outdoor unit, which provides a protrusion on the inner wall of the air guide ring to reduce the gap between the outer edge of the fan and the inner wall of the air guide ring, thereby reducing the axial leakage of air and the noise of the fan and improving the fan performance.

[0007] The present application provides a top-outlet air-conditioning outdoor unit, comprising:

[0008] The casing comprises a casing air outlet and a casing air inlet, wherein the casing air outlet is arranged at the top of the casing, and the casing air inlet is arranged at the outer periphery of the casing;

[0009] An outdoor heat exchanger is arranged inside the casing, and the outdoor heat exchanger is arranged close to the air inlet of the casing;

[0010] A compressor is disposed inside the casing;

[0011] A fan is arranged inside the casing and close to the air outlet of the casing;

[0012] An air guide ring is arranged inside the casing and located at the casing air outlet; a through cavity is defined in the air guide ring and communicated with the casing air outlet;

[0013] A first gap is provided between the outer edge of the fan and the inner wall of the air guide ring along a first direction, and the first direction intersects with the extension direction of the through cavity;

[0014] A raised portion is provided on the inner wall of the air guide ring and is located in the first gap; a second gap is provided between the outer edge of the fan and the raised portion along the first direction;

[0015] The dimension d of the second gap in the first direction and the dimension D of the first gap in the first direction satisfy the relationship: <D。

[0016] The technical solution sets an air guide ring so that part of the fan structure is arranged in the through cavity inside the air guide ring, so that the air guide ring can effectively guide and control the airflow generated by the fan; and sets a protrusion on the inner wall of the air guide ring to reduce the gap between the outer edge of the fan and the inner wall of the air guide ring, thereby reducing axial leakage of air and noise of the fan, etc., thereby improving fan performance.

[0017] In some of the embodiments, the fan includes a blade, which includes a leading edge and a trailing edge, the leading edge is located at the front end of the blade's rotation direction, and the trailing edge is located at the end of the blade's rotation direction; the leading edge is arranged outside the cavity, the trailing edge is arranged inside the cavity, and the trailing edge is located above the protrusion.

[0018] The technical solution reduces the first gap size between the fan and the inner wall of the air guide ring by arranging the trailing edge of the fan blade above the raised portion, thereby reducing the axial leakage of air and the noise of the fan, etc., and improving the fan performance.

[0019] In some of the embodiments, the fan blade is provided with a avoidance portion, and the avoidance portion and the raised portion are arranged correspondingly along the first direction; the avoidance portion is arranged at the outer edge of the fan and close to the trailing edge.

[0020] The technical solution provides an avoidance portion at the outer edge of the fan to prevent the fan from colliding with the protrusion when the fan is running.

[0021] In some embodiments, a dimension D of the first gap in the first direction satisfies: D≥7 mm, D≤10 mm.

[0022] In addition, the present application also provides a top-outlet air-conditioning outdoor unit, comprising:

[0023] The casing comprises a casing air outlet and a casing air inlet, wherein the casing air outlet is arranged at the top of the casing, and the casing air inlet is arranged at the outer periphery of the casing;

[0024] An outdoor heat exchanger is arranged inside the casing, and the outdoor heat exchanger is arranged close to the air inlet of the casing;

[0025] A compressor is disposed inside the casing;

[0026] A fan is arranged inside the casing and close to the air outlet of the casing;

[0027] An air guide ring is provided at the air outlet of the casing and is located inside the casing; the air guide ring defines a through cavity, and the through cavity is communicated with the air outlet of the casing;

[0028] A first gap is provided between the fan and the inner wall of the air guide ring along a first direction, and the first direction intersects with the extending direction of the through cavity;

[0029] A raised portion, which is arranged on the inner wall of the air guide ring and is located in the first gap;

[0030] The avoidance portion is arranged at the outer edge of the fan; the avoidance portion and the raised portion are arranged correspondingly along the first direction and cooperate with each other.

[0031] The technical solution provides an avoidance portion on the outer edge of the fan, and utilizes the avoidance portion to cooperate with the protrusion to prevent the fan and the protrusion from colliding with each other.

[0032] In some of the embodiments, the inner wall of the air guide ring protrudes toward the through cavity to form a protrusion, and the outer side of the air guide ring is provided with a recess corresponding to the protrusion.

[0033] In some embodiments, a dimension H of the protrusion in the first direction satisfies: H≥5mm, H≤8mm.

[0034] In some of the embodiments, the side wall of the air guide ring protrudes toward the inside of the air guide ring to form a protrusion; and a recess corresponding to the protrusion is provided on the outer side of the air guide ring.

[0035] In some of the embodiments, the protrusion extends along the circumference of the air guide ring, and the extension trajectory of the protrusion is a closed curve.

[0036] In some of the embodiments, a bending portion is provided at the top of the air guide ring, and the bending portion is provided outside the casing and connected to the outer edge of the air outlet of the casing.

[0037] In some of the embodiments, an extension portion is provided at the outer edge of the air outlet of the casing, the extension portion extends toward the inside of the casing, and the extension portion is in contact with the outer wall of the air guide ring.

[0038] In the above embodiment, a top-outlet air-conditioning outdoor unit is provided with a protrusion on the inner wall of the air guide ring to reduce the gap between the outer edge of the fan and the inner wall of the air guide ring, thereby reducing the axial leakage of air and the noise of the fan and improving the fan performance; and a avoidance portion is provided at the outer edge of the fan, and the avoidance portion and the protrusion cooperate with each other to prevent the fan and the protrusion from colliding with each other. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1This is a schematic diagram of the structure of an embodiment of the top-outlet air-conditioning outdoor unit of the utility model. Figure 1 ;

[0040] Figure 2 This is a schematic diagram of the structure of an embodiment of the top-outlet air-conditioning outdoor unit of the utility model. Figure 2 ;

[0041] Figure 3 It is a structural schematic diagram of an embodiment of a top-outlet air-conditioning outdoor unit of the utility model when a fan cover is not assembled;

[0042] Figure 4 It is a structural schematic diagram of an embodiment of the top-outlet air-conditioning outdoor unit of the utility model when the top cover, fan cover and electric control box are not assembled;

[0043] Figure 5 It is a structural schematic diagram of the assembly of the top cover and the heat exchange fan of an embodiment of the top-outlet air-conditioning outdoor unit of the utility model;

[0044] Figure 6 yes Figure 5 A partial enlarged view of the middle part;

[0045] Figure 7 It is a structural schematic diagram of an embodiment of a top-outlet air-conditioning outdoor unit of the utility model after the air guide ring and the top cover are assembled;

[0046] Figure 8 It is a cross-sectional view of an embodiment of a top-outlet air-conditioning outdoor unit of the utility model after the air guide ring and the top cover are assembled;

[0047] Fig. 9 yes Figure 8 A partial enlarged view of point B in the middle;

[0048] Fig.10 It is a structural schematic diagram of an air guide ring in an embodiment of a top-outlet air-conditioning outdoor unit of the utility model;

[0049] Fig.11 It is a cross-sectional view of a top cover of an embodiment of a top-outlet air-conditioning outdoor unit of the utility model;

[0050] Fig.12 It is a structural schematic diagram of the assembly of a fan, an air guide ring (with a raised portion) and a top cover in one embodiment of the top-outlet air-conditioning outdoor unit of the utility model;

[0051] Fig.13 yes Fig.12 A partial enlarged view of point C in the middle;

[0052] Fig.14 It is a structural schematic diagram of the assembly of a fan, an air guide ring (without a raised portion) and a top cover in one embodiment of a top-outlet air-conditioning outdoor unit of the utility model;

[0053] Fig.15 yes Fig.14 A partial enlarged view of point D in the middle;

[0054] Fig.16 It is a cross-sectional view of the assembly of a fan, an air guide ring (with a raised portion) and a top cover in one embodiment of a top-outlet air-conditioning outdoor unit of the utility model;

[0055] Fig.17 yes Fig.16 A partial enlarged view of point E in the middle.

[0056] In the figure,

[0057] 100, housing; 200, fan cover; 300, electric control box; 400, fan; 500, drive motor; 600, compressor; 700, outdoor heat exchanger; 800, air guide ring;

[0058] 101. Air outlet of the casing; 102. Air inlet of the casing;

[0059] 110, top cover; 120, side panel; 130, chassis;

[0060] 111. connecting portion; 112. extending portion;

[0061] 410, fan blade; 411, avoidance portion; 420, wheel hub;

[0062] 810, through cavity; 820, raised portion; 830, recessed portion; 840, bent portion. DETAILED DESCRIPTION

[0063] In order to make the purpose and implementation method of the present application clearer, the exemplary implementation method of the present application will be clearly and completely described below in conjunction with the drawings in the exemplary embodiments of the present application. Obviously, the described exemplary embodiments are only part of the embodiments of the present application, rather than all the embodiments.

[0064] It should be noted that the brief description of terms in this application is only for the convenience of understanding the embodiments described below, and is not intended to limit the embodiments of this application. Unless otherwise specified, these terms should be understood according to their common and usual meanings.

[0065] The terms "first", "second", "third", etc. in the specification and claims of this application and the above drawings are used to distinguish similar or similar objects or entities, and do not necessarily mean to limit a specific order or sequence, unless otherwise noted. It should be understood that the terms used in this way can be interchangeable under appropriate circumstances.

[0066] The terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover but not exclude inclusion, for example, a product or device comprising a list of components is not necessarily limited to all the components expressly listed but may include other components not expressly listed or inherent to such product or device.

[0067] The top-outlet air-conditioning outdoor unit provided in the embodiments of the present application may have various implementation forms. Figure 1-Figure 17 It is a specific implementation of the top-outlet air-conditioning outdoor unit of the present application.

[0068] like Figure 1 and Figure 2 As shown, the top-outlet air-conditioning outdoor unit provided in the present application includes a casing 100, and the casing 100 is used to form the overall appearance of the air-conditioning outdoor unit; the top of the casing 100 and the bottom of the casing 100 are opposite ends, and the height direction of the casing 100 is from the bottom of the casing 100 to the top of the casing 100; the left side of the casing 100 and the right side of the casing 100 are opposite sides, and the length direction of the casing 100 is from the left side of the casing 100 to the right side of the casing 100; the front side of the casing 100 and the rear side of the casing 100 are opposite sides, and the thickness direction of the casing 100 is from the front side of the casing 100 to the rear side of the casing 100.

[0069] like Figure 3 As shown, the casing 100 includes a casing air outlet 101, which is arranged at the top of the casing 100, and the air inside the casing 100 is output to the outdoors through the casing air outlet 101; the opening of the casing air outlet 101 is arranged upward.

[0070] The casing 100 includes a casing air inlet 102 , which is arranged at the outer periphery of the casing 100 , and outdoor air enters the casing 100 through the casing air inlet 102 ; the opening direction of the casing air inlet 102 is arranged to intersect with the opening direction of the casing air outlet 101 .

[0071] In some embodiments, the number of the casing air outlet 101 is one, the number of the casing air inlet 102 is multiple, and the multiple casing air inlets 102 are arranged on the periphery of the casing 100 .

[0072] like Figure 1-Figure 3 As shown, the housing 100 includes a top cover 110 , which is located at the top of the housing 100 , and a housing air outlet 101 is opened in the top cover 110 .

[0073] In some embodiments, the air outlet 101 of the casing is circular in opening direction and is disposed in the middle portion of the top cover 110 .

[0074] like Figure 1-Figure 4As shown, the housing 100 includes a side panel 120 , which is connected to the top cover 110 . The side panel 120 is located below the top cover 110 , and the housing air inlet 102 is opened on the side panel 120 .

[0075] In some embodiments, the top cover 110 is detachably connected to the side panel 120 by means of bolts, screws or other components.

[0076] like Figure 1-Figure 4 As shown, the housing 100 includes a bottom plate 130, which is disposed below the side plate 120. The bottom plate 130 and the top cover 110 are disposed correspondingly along the height direction of the housing 100, and the bottom plate 130, the side plate 120 and the top cover 110 jointly define a receiving cavity. The receiving cavity is used to receive components such as an outdoor heat exchanger 700, a compressor 600 and a fan 400 disposed inside the housing 100; wherein the housing air inlet 102 and the housing air outlet 101 are respectively connected to the receiving cavity.

[0077] In some embodiments, the bottom plate 130 is a rectangular structure with cut corners, and the housing 100 is a substantially cubic structure.

[0078] like Figure 1-Figure 3 As shown, the top-outlet air-conditioning outdoor unit includes an electric control box 300, which is mounted on the housing 100 and located outside the accommodating cavity. The electric control box 300 is arranged above the cut corner of the chassis 130. The electric control box 300 is provided with electrical components required for the operation of the air-conditioning outdoor unit, which belongs to the prior art in the field and will not be described in detail.

[0079] like Figure 4 As shown, the top-outlet air-conditioning outdoor unit includes an outdoor heat exchanger 700 , which is disposed inside the casing 100 and is used to exchange heat for air passing through the outdoor heat exchanger 700 ; the outdoor heat exchanger 700 is disposed close to the casing air inlet 102 , and the outdoor heat exchanger 700 is installed on the chassis 130 .

[0080] In some embodiments, the outdoor heat exchanger 700 extends along the outer circumference of the casing 100 so as to maximize the heat exchange area of ​​the outdoor heat exchanger 700 under the premise of a certain volume of the accommodating cavity.

[0081] like Figure 4 As shown, the top-outlet air-conditioning outdoor unit includes a compressor 600, which is arranged inside the casing 100 and mounted on the chassis 130. The compressor 600 is used to compress the refrigerant in a low-temperature and low-pressure state into a high-temperature and high-pressure state. The compressor 600, the outdoor heat exchanger 700 and the indoor heat exchanger together form a refrigerant circulation loop, and the refrigerant flows in the refrigerant circulation loop to achieve cooling or heating of the indoor environment by the air conditioner. It should be noted that the indoor heat exchanger is arranged in the indoor unit of the air conditioner.

[0082] like Figure 4As shown, the compressor 600 is arranged in the middle part of the chassis 130, and the outdoor heat exchanger 700 is arranged at the outer edge part of the chassis 130. The outdoor heat exchanger 700 is arranged around the outer periphery of the compressor 600. This arrangement can increase the area of ​​the outdoor heat exchanger 700 and increase the heat exchange effect of the outdoor heat exchanger 700 on the one hand; on the other hand, the outdoor heat exchanger 700 can be arranged close to the air inlet 102 of the casing, so that the air entering the casing 100 can contact the outdoor heat exchanger 700 in time, thereby increasing the heat exchange effect of the outdoor heat exchanger 700.

[0083] like Figure 3 As shown, the top-outlet air conditioner outdoor unit includes a fan 400, which is located in the accommodating cavity and is arranged near the housing air outlet 101. Through the operation of the fan 400, outdoor air enters the accommodating cavity through the housing air inlet 102, contacts the outdoor heat exchanger 700, and is output to the outdoors through the housing air outlet 101.

[0084] It should be noted that the fan 400 is an axial flow fan, and the fan 400 and the casing air outlet 101 are arranged correspondingly along the height direction of the casing 100 ; the axial direction of the fan 400 is arranged along the height direction of the casing 100 .

[0085] In some embodiments, the fan 400 is located below the air outlet 101 of the casing.

[0086] In some embodiments, the compressor 600 is located below the fan 400. This arrangement can reduce the occupied area of ​​the compressor 600 and the fan 400, facilitate arrangement in the accommodating cavity, and meet the requirement of placing the fan 400 close to the housing air outlet 101.

[0087] like Figure 5 and Figure 6 As shown, the heat exchange fan 400 includes a fan blade 410, and the fan blade 410 is used to promote air flow. The fan blade 410 is usually provided in plurality, and the plurality of fan blades 410 are distributed in a circumference.

[0088] The fan blade 410 includes a leading edge, which is located at the front end of the fan blade 410 in the rotation direction. The leading edge is the part of the fan blade 410 that first contacts the air. The leading edge mainly has the functions of guiding airflow, reducing resistance and ensuring the stability of the fan blade 410.

[0089] The fan blade 410 includes a trailing edge, which is located at the end of the fan blade 410 in the rotation direction. The main function of the trailing edge is to reduce the vortex and noise generated by the airflow at the end of the fan blade 410.

[0090] It should be noted that the leading edge and the trailing edge are arranged substantially in an upwardly inclined direction in space.

[0091] like Figure 5As shown, the heat exchange fan 400 includes a hub 420 , and the hub 420 is used to mount the fan blades 410 , and a plurality of fan blades 410 are distributed along the circumference of the hub 420 .

[0092] like Figure 3 As shown, the top-outlet air-conditioning outdoor unit includes a driving motor 500, which is used to drive the fan 400 to rotate; the rotating shaft of the driving motor 500 is connected to the hub 420, so that the driving motor 500 drives the fan blades 410 to rotate through the hub 420.

[0093] It should be noted that the rotating shaft of the driving motor 500 is arranged downward, and at least the leading edge portion of the fan blade 410 is located below the driving motor 500 .

[0094] like Figure 1 and Figure 2 As shown, the top-outlet air-conditioning outdoor unit includes a fan cover 200, which is disposed at the air outlet 101 of the housing and mounted on the top cover 110. The fan cover 200 is used to provide protection for the fan 400 to prevent damage to the fan 400 or accidental injury caused by inhalation of debris. The fan cover 200 can also concentrate and evenly guide the wind flow, making the air flow blown out by the fan 400 more concentrated and even.

[0095] In some embodiments, the fan cover 200 is also used to install a driving motor 500 , and the driving motor 500 is disposed below the fan cover 200 .

[0096] like Figure 5 and Figure 7 As shown, the top-outlet air-conditioning outdoor unit includes an air guide ring 800, which is arranged at the air outlet 101 of the casing; a through cavity 810 is defined and formed in the air guide ring 800, and the through cavity 810 is connected to the air outlet 101 of the casing; the trailing edge portion of the fan blade 410 is arranged in the through cavity 810, and the leading edge portion of the fan blade 410 is located below the through cavity 810, so that the air guide ring 800 guides the air flow in the accommodating cavity, so that the fan 400 can better play the role of inducing wind.

[0097] It should be noted that the opening of the through cavity 810 is substantially arranged along the height direction of the housing 100 , so that the through cavity 810 substantially extends along the height direction of the housing 100 ; the driving motor 500 is arranged in the through cavity 810 .

[0098] like Figure 7 As shown, the air guide ring 800 is connected to the top cover 110 so that the air guide ring 800 is disposed in the accommodating cavity.

[0099] like Fig.10 As shown, a bending portion 840 is provided at the top of the air guide ring 800 . The bending portion 840 is provided outside the housing 100 , and the bending portion 840 is connected to the outer edge of the housing air outlet 101 .

[0100] When the air guide ring 800 is assembled with the top cover 110, the lower end of the air guide ring 800 is passed through the air outlet 101 of the housing and arranged in the accommodating cavity, and then the bent portion 840 and the side of the air outlet 101 of the housing that is away from the accommodating cavity are contacted and connected to each other. It should be noted that by providing the bent portion 840 on the air guide ring 800 and connecting the bent portion 840 with the outer edge of the air outlet 101 of the housing, it is not only convenient to connect the air guide ring 800 with the top cover 110 and realize the installation and fixation of the air guide ring 800, but also the air guide ring 800 can be constrained and positioned.

[0101] In some embodiments, Fig. 9 and Fig.11 As shown, a connecting portion 111 is provided at the outer edge of the air outlet 101 of the casing, and the bending portion 840 and the connecting portion 111 are in contact with each other and connected to each other through fasteners such as bolts or screws.

[0102] In some other embodiments, the connection portion 111 is formed by the top cover 110 being recessed toward the inside of the housing 100. It should be noted that the fan cover 200 is disposed on the connection portion 111.

[0103] like Fig.11 As shown, the top cover 110 is provided with an extension portion 112, which is arranged at the air outlet 101 of the casing and connected to the connecting portion 111. The side of the extension portion 112 away from the connecting portion 111 extends toward the inside of the casing 100, and the extension portion 112 contacts the outer wall of the air guide ring 800 to increase the contact area between the air guide ring 800 and the top cover 110, thereby increasing the firmness of the connection between the air guide ring 800 and the top cover 110.

[0104] like Fig.14 and Fig.15 As shown, there is a first gap between the outer edge of the fan 400 and the inner wall of the air guide ring 800 along the first direction, and the first direction intersects with the extension direction of the through cavity 810; by providing a gap between the outer edge of the fan 400 and the inner wall of the air guide ring 800, it is convenient to arrange the trailing edge of the fan blade 410 in the through cavity 810, and it can also prevent the fan blade 410 from colliding with the air guide ring 800 when the fan 400 is running.

[0105] In some embodiments, the dimension D of the first gap in the first direction satisfies: D≥7mm, D≤10mm. If the dimension D of the first gap is too large, the air flowing into the through cavity 810 will flow from the first gap instead of flowing through the fan blade 410, resulting in axial leakage of the air, which will not only reduce the effect of the air guide ring 800, but also generate a large noise when the air flows. Therefore, in theory, the dimension D of the first gap should be as small as possible. However, in actual applications, if the dimension D of the first gap is too small, it will increase the difficulty of assembling the fan blade 410 and the air guide ring 800, and the fan blade 410 will also easily collide with the air guide ring 800.

[0106] Based on this, in the present application, a protrusion 820 is provided in the first gap, and the first gap is sealed by the protrusion 820 to reduce the dimension D of the first gap in the first direction.

[0107] Specifically, Figure 5 and Figure 7 As shown, the inner wall of the air guide ring 800 is provided with a protrusion 820, and the protrusion 820 is arranged on the inner wall of the air guide ring 800; the protrusion 820 is used to reduce the gap between the outer edge of the fan 400 and the inner wall of the air guide ring 800, that is, the protrusion 820 is used to perform D sealing on the first gap, thereby reducing the axial leakage of air and the noise of the fan 400, etc., and improving the performance of the fan 400.

[0108] like Fig.12 and Fig.13 As shown, there is a second gap between the outer edge of the fan 400 and the protrusion 820 along the first direction, and the dimension d of the second gap in the first direction and the dimension D of the first gap in the first direction satisfy the relationship: d <D。

[0109] In some embodiments, the second gap d is 2 mm. If the second gap d is too small, it will increase the difficulty of assembling the fan blade 410 and the air guide ring 800. If the second gap d is too large, it will reduce the sealing effect of the protrusion 820 on the first gap D.

[0110] It should be noted that the protrusion 820 is arranged in the middle part of the air guide ring 800 along the extension direction of the through cavity 810, and the matching area between the protrusion 820 and the fan 400 in the extension direction of the through cavity 810 should be as small as possible to facilitate the assembly of the fan blade 410 through the protrusion 820 and the air guide ring 800.

[0111] In some embodiments, Fig.17 As shown, the dimension H of the protrusion 820 in the first direction satisfies: H≥5mm, H≤8mm. Under the premise that the dimension d of the second gap in the first direction remains unchanged, increasing the dimension H of the protrusion 820 in the first direction will reduce the dimension D of the first gap in the first direction. Since the mating area between the protrusion 820 and the blade 410 is small, while the mating area between the blade 410 and the inner wall of the air guide ring 800 is large, in some embodiments, it is selected to increase the dimension H of the protrusion 820 in the first direction to facilitate the assembly of the fan 400 and the air guide ring 800.

[0112] It should be noted that increasing the dimension H of the protrusion 820 in the first direction will lead to an increase in the outer diameter of the air guide ring 800. The increase in the outer diameter of the air guide ring 800 will also increase the production cost of the air guide ring 800. Therefore, the dimension H of the protrusion 820 in the first direction cannot be increased indefinitely, and will at least be limited by the installation space of the air guide ring 800 and the manufacturing cost of the air guide ring 800.

[0113] In some embodiments, the inner wall of the air guide ring 800 protrudes toward the through cavity 810 to form a protrusion 820, and a recess 830 corresponding to the protrusion 820 is provided on the outer side of the air guide ring 800 to facilitate the manufacturing of the protrusion 820 and the connection between the protrusion 820 and the air guide ring 800.

[0114] In other embodiments, the air guide ring 800 is made of curled metal plates, and the inner wall of the air guide ring 800 is punched toward the through cavity 810 to form a protrusion 820, which can not only simplify the manufacturing process of the protrusion 820 but also increase the strength of the air guide ring 800.

[0115] In some embodiments, the protrusion 820 extends along the circumference of the air guide ring 800 , and the extension trajectory of the protrusion 820 is a closed curve, so that the protrusion 820 can fully seal the first gap.

[0116] In some embodiments, the cross-sectional shape of the protrusion 820 along the opening direction of the through cavity 810 may be U-shaped, V-shaped, or rectangular.

[0117] like Figure 6 As shown, the fan blade 410 is provided with a avoidance portion 411, and the avoidance portion 411 and the protrusion 820 are arranged correspondingly along the first direction; the avoidance portion 411 is arranged at the outer edge of the fan 400 and close to the trailing edge to prevent the fan blade 410 and the protrusion 820 from colliding with each other when the fan 400 is running.

[0118] In some embodiments, the avoidance portion 411 is a notch provided at the outer edge of the fan blade 410 , and the protrusion 820 is provided in the notch to prevent the fan blade 410 and the protrusion 820 from contacting each other.

[0119] The working principle of the raised portion 820 in the above-mentioned top-outlet air-conditioning outdoor unit to prevent axial leakage of air is as follows: through the operation of the fan 400, the external air of the casing 100 enters the accommodating cavity through the casing air inlet 102, contacts and exchanges heat with the outdoor heat exchanger 700, and is then introduced into the through cavity 810 through the fan blades 410. The air in the first gap is blocked by the raised portion 820, and the air flows in the first gap along the height direction of the casing 100. The air passes through the leading edge and the trailing edge in sequence along the windward surface of the fan blades 410, and is then output to the room through the casing air outlet 101.

[0120] The above-mentioned top-discharge air-conditioning outdoor unit is provided with a protrusion 820 on the inner wall of the air guide ring 800 to reduce the gap between the outer edge of the fan 400 and the inner wall of the air guide ring 800, thereby reducing the axial leakage of air and the noise of the fan 400 and improving the performance of the fan 400; and a avoidance portion 411 is provided at the outer edge of the fan 400, and the avoidance portion 411 and the protrusion 820 cooperate with each other to prevent the fan 400 and the protrusion 820 from colliding with each other.

[0121] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

[0122] For ease of explanation, the above description has been made in conjunction with specific embodiments. However, the above exemplary discussion is not intended to be exhaustive or limit the embodiments to the specific forms disclosed above. Based on the above teachings, various modifications and variations can be obtained. The selection and description of the above embodiments are intended to better explain the principles and practical applications, so that those skilled in the art can better use the embodiments and various different variations of the embodiments suitable for specific use considerations.

Claims

1. A top-outlet air-conditioning outdoor unit, characterized in that: include: A casing, comprising a casing air outlet and a casing air inlet, wherein the casing air outlet is arranged at the top of the casing, and the casing air inlet is arranged at the outer periphery of the casing; An outdoor heat exchanger is disposed inside the casing, and the outdoor heat exchanger is disposed close to an air inlet of the casing; A compressor, which is arranged inside the casing; A fan is disposed inside the housing and close to an air outlet of the housing; An air guide ring is arranged inside the housing and located at the housing air outlet; a through cavity is defined in the air guide ring, and the through cavity is communicated with the housing air outlet; A first gap is provided between the outer edge of the fan and the inner wall of the air guide ring along a first direction, and the first direction intersects with the extension direction of the through cavity; a raised portion, which is arranged on the inner wall of the air guide ring and is located in the first gap; a second gap is formed between the outer edge of the fan and the raised portion along the first direction; The dimension d of the second gap along the first direction and the dimension D of the first gap along the first direction satisfy the relationship: <D。 2. The top-outlet air conditioner outdoor unit according to claim 1, characterized in that: The fan includes a blade, and the blade includes a leading edge and a trailing edge. The leading edge is located at the front end of the blade in the rotation direction, and the trailing edge is located at the end of the blade in the rotation direction; the leading edge is arranged outside the through cavity, and the trailing edge is arranged inside the through cavity, and the trailing edge is located above the protrusion.

3. The top-outlet air-conditioning outdoor unit according to claim 2, characterized in that: The fan blade is provided with a avoidance portion, and the avoidance portion and the protrusion are arranged correspondingly along the first direction; the avoidance portion is arranged at the outer edge of the fan and close to the trailing edge.

4. The top-outlet air-conditioning outdoor unit according to claim 1, characterized in that: A dimension D of the first gap along the first direction satisfies: D≥7mm, D≤10mm.

5. A top-outlet air-conditioning outdoor unit, characterized in that: include: A casing, comprising a casing air outlet and a casing air inlet, wherein the casing air outlet is arranged at the top of the casing, and the casing air inlet is arranged at the outer periphery of the casing; An outdoor heat exchanger is disposed inside the casing, and the outdoor heat exchanger is disposed close to an air inlet of the casing; A compressor, which is arranged inside the casing; A fan is disposed inside the housing and close to an air outlet of the housing; An air guide ring is provided at the air outlet of the housing and is located inside the housing; the air guide ring defines a through cavity, and the through cavity is communicated with the air outlet of the housing; A first gap is provided between the fan and the inner wall of the air guide ring along a first direction, and the first direction intersects with the extending direction of the through cavity; a raised portion, which is arranged on the inner wall of the air guide ring and is located in the first gap; The avoidance portion is arranged at the outer edge of the fan; the avoidance portion and the protruding portion are arranged correspondingly along the first direction and cooperate with each other.

6. The top-outlet air-conditioning outdoor unit according to claim 1 or 5, characterized in that: A dimension H of the protrusion along the first direction satisfies: H≥5mm, H≤8mm.

7. The top-outlet air-conditioning outdoor unit according to claim 1 or 5, characterized in that: The side wall of the air guide ring protrudes toward the inside of the air guide ring to form the protruding portion; and a concave portion corresponding to the protruding portion is provided on the outer side of the air guide ring.

8. The top-outlet air-conditioning outdoor unit according to claim 1 or 5, characterized in that: The protrusion extends along the circumferential direction of the air guide ring, and the extension trajectory of the protrusion is a closed curve.

9. The top-outlet air-conditioning outdoor unit according to claim 1 or 5, characterized in that: A bending portion is provided on the top of the air guide ring, and the bending portion is arranged outside the casing and connected to the outer edge of the air outlet of the casing.

10. The top-outlet air-conditioning outdoor unit according to claim 1 or 5, characterized in that: An extension portion is provided at the outer edge of the air outlet of the casing, and the extension portion extends toward the inside of the casing, and the extension portion is in contact with the outer wall of the air guide ring.

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