Air conditioner with grating

Abstract

The invention discloses an air conditioner with a grating. The air conditioner aims at solving the problem that the grating density and wind resistance of a grating piece cannot be considered at the same time. A grille piece of an outdoor unit of the air conditioner with the grille comprises a positioning frame, a supporting part, a plurality of air guide rings and a plurality of connecting ribs. The positioning frame is installed close to the air outlet and arranged on the periphery of the supporting part, the connecting ribs are connected between the supporting part and the positioning frame, the multiple connecting ribs are distributed in the circumferential direction of the supporting part at intervals, and the multiple air guide rings are installed between the positioning frame and the supporting part at least through the multiple connecting ribs at intervals. And a plurality of air outlet areas are arranged between the positioning frame and the supporting part. In the axial direction of the positioning frame, the inclined setting angle of the outer side edge, away from the fan assembly, of the air guide ring in the direction away from the supporting part is the air outlet angle, and the air outlet angle in the air outlet area close to the positioning frame is smaller than the air outlet angle in the air outlet area close to the supporting part. The air conditioner is used for improving the heat exchange efficiency of the outdoor unit.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioning, and in particular to an air conditioner provided with a grille. Background Art

[0002] An air conditioner is a device that can adjust and control parameters such as the temperature, humidity, and circulation flow rate of the ambient air in a building or structure.

[0003] At the outdoor unit of the air conditioner, the fan assembly drives the nearby air to flow through the outdoor unit heat exchanger in the outdoor unit, which is used for efficient heat exchange between the outdoor unit heat exchanger and the air. In order to prevent foreign objects or human hands from entering the outdoor unit and contacting the fan assembly, a grille can be installed at the air outlet of the outdoor unit.

[0004] However, if the grille density of the grille member is large, although it can prevent external debris or human hands from entering the outdoor unit, it increases the wind resistance at the air outlet. If the grille density of the grille member is small, although it can reduce the wind resistance at the air outlet, it cannot effectively prevent external debris or human hands from entering the outdoor unit. Summary of the invention

[0005] The object of the present invention is to provide an air conditioner with a grille, aiming to solve the problem that the grille density and wind resistance of the grille member cannot be taken into account at the same time.

[0006] In order to achieve the above object, the present invention adopts the following technical scheme:

[0007] The present invention provides an air conditioner provided with a grille, the air conditioner comprises an outdoor unit, the outdoor unit comprises a housing, an outdoor heat exchanger, a fan assembly and a grille member. The housing has an installation cavity and an air outlet. The fan assembly and the outdoor heat exchanger are located in the installation cavity, and the fan assembly is used to drive air to flow through the outdoor heat exchanger and blow out from the air outlet. The grille member comprises a positioning frame, a support portion, a plurality of air guide rings and a plurality of connecting ribs. The positioning frame is installed near the air outlet, the positioning frame is arranged at the outer periphery of the support portion, the connecting ribs are connected between the support portion and the positioning frame, and the plurality of connecting ribs are distributed at intervals along the circumference of the support portion, and the plurality of air guide rings are installed between the positioning frame and the support portion at least at intervals through the plurality of connecting ribs. There are a plurality of air outlet areas between the positioning frame and the support portion. Along the axial direction of the positioning frame, the inclined setting angle of the outer edge of the air guide ring away from the fan assembly toward the direction away from the support portion is the air outlet angle, and the air outlet angle in the air outlet area close to the positioning frame is smaller than the air outlet angle in the air outlet area close to the support portion.

[0008] In the outdoor unit, the fan assembly located in the housing can drive air to flow through the outdoor heat exchanger to improve the heat exchange efficiency of the outdoor heat exchanger. By installing a grille at the air outlet of the outdoor unit housing, it is possible to prevent external debris from entering the installation cavity of the housing through the air outlet to affect the rotation of the fan assembly blades. In addition, the setting of the grille can also prevent people from touching the fan assembly blades through the air outlet.

[0009] In this way, by setting the air guide ring away from the outer edge of the fan assembly and tilting it in the direction away from the support portion, the adjusted grille member has the characteristics of low wind resistance and is conducive to increasing the air output of the outdoor unit. On this basis, since the tilted air guide ring has a smaller tilted air outlet angle in the air outlet area of ​​the grille member close to the positioning frame, and the air outlet area there has a larger air output, the air outlet angle after the optimized distribution can better guide the blowing of the wind, and at the same time greatly optimizes the wind binding and air outlet uniformity of the wind field, so that the air supply distance of the air outlet wind field is farther, so as to further improve the heat exchange effect of the outdoor heat exchanger, and there is no need to adjust the arrangement density of the grille bars such as the air guide ring.

[0010] In some embodiments, the plurality of air outlet areas at least include a first air outlet area and a second air outlet area, the plurality of air guide rings close to the support portion are located in the first air outlet area, and the second air outlet area is located between the first air outlet area and the positioning frame. In the second air outlet area, along the axial direction of the positioning frame, at least part of the air guide rings close to the positioning frame are offset toward a direction close to the fan assembly, and a second air outlet angle in the second air outlet area is smaller than the first air outlet angle in the first air outlet area.

[0011] In some embodiments, the plurality of air outlet areas further include a third air outlet area, the third air outlet area is located between the second air outlet area and the positioning frame, at least part of the air guide ring close to the positioning frame is located in the third air outlet area, and another part of the air guide ring is located in the second area. In the third air outlet area, along the axial direction of the positioning frame, at least part of the air guide ring close to the positioning frame is offset toward a direction close to the fan assembly, and a third air outlet angle in the third air outlet area is smaller than the second air outlet angle.

[0012] In some embodiments, the area of ​​the first air outlet region is 2 to 3 times the area of ​​the second air outlet region.

[0013] In some implementations, the value range of the first air outlet angle α1 is 5°≤α1≤8°.

[0014] In some implementations, the value range of the air outlet angle α2 is 1°≤α2<5°.

[0015] In some embodiments, the area of ​​the second air outlet region is 2 to 4 times the area of ​​the third air outlet region.

[0016] In some embodiments, the value range of the third air outlet angle α3 is 1°≤α3<3°, and the value range of the second air outlet angle α2 is 3°≤α2<5°.

[0017] In some embodiments, the ratio of the area of ​​the first air outlet region, the area of ​​the second air outlet region, and the area of ​​the third air outlet region is 8:3:1.

[0018] In some embodiments, the first air outlet angle is 5°, the second air outlet angle is 3°, and the third air outlet angle is 1°.

[0019] In some embodiments, the side of the air guide ring away from the support portion is the leeward surface, and the inner end surface of the air guide ring close to the fan assembly along the axial direction of the positioning frame is connected to the leeward surface through a chamfered surface.

[0020] In some embodiments, the minimum angle between the chamfered surface and the vertical line is the chamfer angle β of the chamfered surface. The range of the chamfer angle is 45°≤β<50°, 50°≤β<55° or 55°≤β≤60°. The vertical line is a straight line perpendicular to the axial direction of the positioning frame.

[0021] In some embodiments, when the air outlet area includes a first air outlet area, a second air outlet area and a third air outlet area: the slope angle in the first air outlet area is greater than the slope angle in the second air outlet area, and the slope angle in the second air outlet area is greater than the slope angle in the third air outlet area.

[0022] In some embodiments, the grille member further includes a plurality of first air guide strips, and the first air guide strips are arc-shaped structures. In the air outlet area between the air guide ring and the positioning frame, the plurality of first air guide strips are arranged at intervals and connected to at least one of the connecting rib and the positioning frame. The outer edges of the first air guide strips are inclined in a direction away from the support portion to form an air outlet angle.

[0023] In some embodiments, the grille member further includes a plurality of second air guide strips, the second air guide strips are arc-shaped structures, and in the air outlet area between the support portion and the air guide ring, the plurality of second air guide strips are arranged at intervals and connected to at least one of the support portion and the connecting rib. The outer edges of the second air guide strips are inclined in a direction away from the support portion to form an air outlet angle. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0025] Figure 1A schematic diagram of a refrigerant flow path of an air conditioner provided in an embodiment of the present application;

[0026] Figure 2 A schematic diagram of an exploded structure of an outdoor unit of an air conditioner provided in an example of this application;

[0027] Figure 3 for Figure 2 A front view of the grille member shown in;

[0028] Figure 4 For along Figure 3 The cross-section diagram of the AA line;

[0029] Figure 5 for Figure 4 A partial enlarged schematic diagram of the middle and upper air guide ring;

[0030] Figure 6 An air flow diagram of an outdoor unit provided for an embodiment of the application;

[0031] Figure 7 for Figure 5 A partial cross-sectional schematic diagram of an air guide ring shown in ;

[0032] Figure 8 A schematic diagram of a wind field simulation for an outdoor unit of an air conditioner in a related scheme;

[0033] Fig. 9 A schematic diagram of a first wind field simulation of an outdoor unit of an improved air conditioner;

[0034] Fig.10 A schematic diagram of air flow between two adjacent air guide rings in a related solution;

[0035] Fig.11 A schematic diagram of air flow between two adjacent air guide rings after improvement;

[0036] Fig.12 A schematic diagram of wind field simulation at a fan assembly and an air outlet;

[0037] Fig.13 This is a schematic diagram of the second wind field simulation of the outdoor unit of an improved air conditioner.

[0038] Reference numerals:

[0039] 100-air conditioner;

[0040] 10-compressor; 20-four-way valve; 30-outdoor heat exchanger; 40-throttling device;

[0041] 50-Indoor heat exchanger;

[0042] 70-housing; 71-installation cavity; 72-air outlet; 73-return air outlet;

[0043] 80- fan assembly;

[0044] 90-grid member; 91-positioning frame; 911-first side bar; 912-second side bar; 92-grid bar; 921-air guide ring; 922-first air guide bar; 923-second air guide bar; 9241-windward surface; 9242-leeward surface; 9243-inner end surface; 9244-chamfered inclined surface; 93-connecting rib; 94-supporting part;

[0045] B1-first air outlet area; B2-second air outlet area; B3-third air outlet area. DETAILED DESCRIPTION

[0046] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0047] In the description of the present invention, it should be understood that the terms "upper", "lower", "left", "right", "front", "back", "inside", "outside" and the like indicate directions or positional relationships based on the directions or relative positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, it should not be understood as a limitation to the present invention. Unless otherwise specified, the above-mentioned directional description can be flexibly set in the process of actual application under the condition of satisfying the relative positional relationship shown in the drawings.

[0048] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0049] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "connected" should be understood in a broad sense, such as fixed connection, detachable connection, and integral connection. It can be directly connected or indirectly connected through an intermediate medium, and it can be the internal connection of two components or the electrical connection between two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0050] It should be noted that in actual applications, due to the limitations of equipment accuracy or installation errors, absolute parallel or perpendicular effects are difficult to achieve. The description of perpendicularity, parallelism or co-ordination in this application is not an absolute limiting condition, but means that a perpendicular or parallel structure setting can be achieved within a preset error range (such as an upper and lower deviation of 5°) and the corresponding preset effect can be achieved, thereby maximizing the technical effect of the defined feature and making the corresponding technical solution easy to implement and having high feasibility.

[0051] In the embodiments of the present invention, the terms "comprises", "comprising" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, article or device. In the absence of further restrictions, an element defined by the sentence "comprising a ..." does not exclude the presence of other identical elements in the process, article or device including the element.

[0052] In the embodiments of the present invention, words such as "exemplary" or "for example" are used to indicate examples, illustrations or explanations. Any embodiment or design scheme described as "exemplary" or "for example" in the embodiments of the present invention should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "exemplary" or "for example" is intended to present the relevant concepts in a specific way.

[0053] An embodiment of the present application provides an air conditioner with a grille (hereinafter referred to as the air conditioner). The air conditioner is an air conditioner, which is a device that can adjust and control parameters such as temperature, humidity and circulation flow rate of the ambient air in a building or structure.

[0054] like Figure 1 As shown, the air conditioner 100 may include a compressor 10, a four-way valve 20, an outdoor heat exchanger 30, a throttling device 40, and an indoor heat exchanger 50. For example, the four-way valve 20 may have a first port A, a second port B, a third port C, and a fourth port D, and the compressor 10 may have a return air end and an outlet air end, such as Figure 1One end of the air flowing into the compressor 10 along the arrow direction is the return air end of the compressor, and the other end is the outlet air end of the compressor 10.

[0055] The return air end of the compressor 10 can be connected to the first port A of the four-way valve, the outlet air end of the compressor 10 can be connected to the second port B of the four-way valve, the third port C of the four-way valve can be connected to one end of the outdoor heat exchanger 30, the other end of the outdoor heat exchanger 30 can be connected to one end of the indoor heat exchanger 50 through the throttling device 40, and the other end of the indoor heat exchanger 50 can be connected to the fourth port D of the four-way valve.

[0056] The air conditioner 100 may include an outdoor unit and an indoor unit. Figure 1 The compressor 10, the four-way valve 20 and the outdoor heat exchanger 30 may be part of the outdoor unit, and the corresponding indoor heat exchanger 50 may be part of the indoor unit. The throttling device 40 may be a capillary tube or an electronic expansion valve throttling device. The throttling device 40 may be as follows: Figure 1 As shown, the throttling device 40 can be installed in the indoor unit. The throttling device 40 can also be installed in the refrigerant pipeline between the outdoor unit and the indoor unit. It is only necessary to make the throttling device 40 between the indoor heat exchanger 50 and the outdoor heat exchanger 30 along the flow direction of the refrigerant.

[0057] Based on this, driven by the compressor 10, the refrigerant can circulate between the indoor unit and the outdoor unit through the pipeline and produce a reversible phase change. While the refrigerant produces a phase change, it can release or absorb heat through the heat exchanger.

[0058] In this way, the refrigerant can exchange heat with the surrounding medium (such as air) in the outdoor unit through the outdoor heat exchanger 30, thereby releasing heat and heating the surrounding air (or absorbing heat to cool the surrounding air). The refrigerant can exchange heat with the surrounding air in the indoor unit through the indoor heat exchanger 50, thereby absorbing heat to cool the surrounding air (or releasing heat to heat the surrounding air), thereby achieving efficient cooling (or heating) of the air conditioner 100.

[0059] It should be noted that by adjusting the connection direction of the four-way valve 20, the air conditioner 100 can be operated in a cooling state (such as Figure 1 The solid line flow direction of the refrigerant in the Figure 1 In addition, the function of the four-way valve 20 can be replaced by other switching devices or flow paths, or the air conditioner 100 can be configured as a single cooling machine structure without setting a four-way valve, which is not limited in this application.

[0060] It should be noted that the indoor unit of the air conditioner 100 may be a duct structure, and the indoor unit of the duct structure is usually installed and arranged in conjunction with a ceiling structure, such as concealed installation of the indoor unit in conjunction with a ceiling structure. This has the advantages of concealed installation, easy coordination with a home ceiling, and good aesthetics.

[0061] In some embodiments, Figure 2 As shown, Figure 2 An exploded structural diagram of an outdoor unit of an air conditioner 100 provided in an example of the present application, the outdoor unit can be regarded as a part of the air conditioner 100, such as the outdoor unit (or the air conditioner 100) can include a housing 70, an outdoor heat exchanger 30 and a fan assembly 80. The housing 70 can enclose an installation cavity 71, and an air outlet 72 can be provided on one side of the housing 70, and the side provided with the air outlet 72 can be defined as the front side of the housing 70.

[0062] Continue to refer to Figure 2 , the fan assembly 80 and the outdoor heat exchanger 30 can be located in the installation cavity 71, and the fan assembly 80 can rotate to drive the air to flow through the outdoor heat exchanger 30 and blow out from the air outlet 72, so as to improve the heat exchange efficiency between the refrigerant and the air through the outdoor heat exchanger 30. Exemplarily, the housing 70 can also be provided with a return air port 73 at at least one of the rear side wall, the left side wall and the right side wall, and the outdoor heat exchanger 50 can be installed close to the return air port 73, so that the air sucked into the installation cavity 71 by the fan assembly 80 can exchange heat with the outdoor heat exchanger 50 at this location when flowing through the return air port 73, and then the air can be driven by the fan assembly 80 and blown forward from the air outlet 72.

[0063] Alternatively, an air outlet 72 may be provided on the upper side wall of the shell 70, and correspondingly, a return air outlet 73 may be provided at least one of the front side wall, the rear side wall, the left side wall and the right side wall of the shell 70. For example, the return air outlet 73 may be provided on the front and rear side walls and the left and right side walls of the shell 70, and the outdoor heat exchanger 30 may be installed close to the return air outlet 73, that is, the fan assembly 80 may drive the air to flow through the outdoor heat exchanger 30 from the four return air outlets 73 and blown upward from the air outlet 72, which is beneficial to increase the effective heat exchange area of ​​the outdoor heat exchanger 30 in the installation cavity 71 with limited space.

[0064] Alternatively, an outdoor heat exchanger 30 may be installed between the air outlet 72 and the fan assembly 80 , so that the air flowing into the installation cavity 71 from the return air port 73 may be blown out from the air outlet 72 after passing through the outdoor heat exchanger 30 .

[0065] In addition, if the outdoor heat exchanger 30 is installed close to the return air port 73, for example, one of the return air ports 73 is located at the rear side of the installation cavity 71. It is also possible that there is no need to provide a rear side plate at the rear side of the installation cavity 71, that is, the rear opening of the open installation cavity 71 is the return air port 73, which is beneficial to increase the effective installation area of ​​the outdoor heat exchanger 30.

[0066] It should be noted that, in the installation cavity 71, the fan assembly 80 can be an axial flow fan or a centrifugal fan. Taking the fan assembly 80 as an axial flow fan as an example, the axial flow fan has the characteristics of simple structure, stability and reliability, low noise and large air volume. Since the outdoor heat exchanger 30 can be installed at the return air port 73, the multiple fins and refrigerant pipes of the outdoor heat exchanger 30 can be used as a grille structure at the return air port 73 to prevent external debris from entering the installation cavity 71 with the air, and can also prevent a hand from inserting into the installation cavity 71 from the return air port 73 to touch the rotating blades of the fan assembly 80, thereby preventing the occurrence of safety accidents.

[0067] Based on this, Figure 2 As shown, the outdoor unit may further include a grille member 90, combined with Figure 3 The grille member 90 may include a positioning frame 91, a plurality of grille bars 92, a plurality of connecting ribs 93, and a support portion 94. The positioning frame 91 may be disposed near the air outlet 72 for connecting the housing 70, and the positioning frame 91 may be disposed at the periphery of the support portion 94 so that an installation area for the grille bars 92 and the connecting ribs 93 may be formed between the support portion 94 and the positioning frame 91.

[0068] In the installation area, a plurality of connecting ribs 93 may be distributed at intervals along the circumference of the support portion 94, one end of a connecting rib 93 may be connected to the positioning frame 91, and the other end of the connecting rib 93 may be connected to the support portion 94, so that the positioning frame 91 may form a stable frame structure with the support portion 94 through the plurality of connecting ribs 93. On this basis, a plurality of grille bars 92 may be distributed at intervals in the installation area, and the grille bars 92 may be stably connected to the installation area through at least one of the connecting ribs 93, the positioning frame 91 and the support portion 94, and the gap between two adjacent grille bars 92 is used to circulate the air blown out from the air outlet 72.

[0069] In this way, by installing the grille member 90 at the air outlet 72, external debris can be prevented from entering the installation cavity 71 through the air outlet 72 to affect the rotation of the blades of the fan assembly 80. In addition, the setting of the grille member 90 can also prevent human hands from touching the blades of the fan assembly 80 through the air outlet 72.

[0070] In some embodiments, Figure 3As shown, the positioning frame 91 may include a first side bar 911 and a second side bar 912, and the first side bar 911 and the second side bar 912 may be arc-shaped structures. For example, the first end of the first side bar 911 may be connected to the first end of the second side bar 912, and the second end of the first side bar 911 may be connected to the second end of the second side bar 912, and a plurality of grille bars 92 and a plurality of installation areas for connecting ribs 93 are formed at intervals.

[0071] For example, the first end of the first side strip 911 and the second end of the first side strip 911 can be arranged approximately vertically, and the first end and the second end thereof can be connected and arranged via a rounded structure with a large arc. Correspondingly, the first end of the second side strip 912 and the second end of the second side strip 912 can also be arranged approximately vertically, and the first end and the second end thereof can also be connected and arranged via a rounded structure with a large arc.

[0072] In this way, the first side strip 911 and the second side strip 912 of the arc structure can form a leaf-shaped frame structure with a mounting area in the middle and right-angle structures at both ends. A plurality of connecting ribs 93 located in the mounting area can be connected and fixed to the adjacent first side strip 911 or second side strip 912, and the connecting rib 93 can be a straight segment structure, or the connecting rib 93 can also be an arc structure, which is not limited.

[0073] In addition, the angle between the first end of the first side strip 911 and the second end of the first side strip 911 may be an obtuse angle, and the angle between the first end of the second side strip 912 and the second end of the second side strip 912 may be an obtuse angle, so that the first side strip 911 and the second side strip 912 of the arc structure may be surrounded by a leaf-shaped frame structure with a mounting area in the middle and acute angle structures at both ends.

[0074] Alternatively, the first side strip 911 and the second side strip 912 of the arc structure may also form an elliptical ring or a circular ring structure positioning frame 91. The first side strip 911 and the second side strip 912 may also be a broken line structure, or the first end and the second end may be connected by a chamfer structure, and may also form a polygonal structure positioning frame 91, which is not limited thereto.

[0075] In some embodiments, Figure 3 As shown, the grille bar 92 may include a plurality of air guide rings 921, and the plurality of air guide rings 921 may be installed at intervals between the positioning frame 91 and the support portion 94 at least through the connecting ribs 93. For example, the plurality of air guide rings 921 may be a plurality of concentric ring structures distributed at intervals. In this way, a plurality of air outlet areas may be formed between the positioning frame 91 and the support portion 94 for circulating air.

[0076] Taking the positioning frame 91 as an example in which the frame structure is leaf-shaped, the grille bars 92 may also include a plurality of first air guide strips 922. The first air guide strips 922 may be arc-shaped structures. In the installation area between an air guide ring 921 away from the support portion 94 and the positioning frame 91, the plurality of first air guide strips 922 may be arranged at intervals and connected and fixed to at least one of the connecting ribs 93 and the positioning frame 91.

[0077] In the case where the installation area surrounded by the positioning frame 91 is not a circular area, the circular ring-shaped air guide ring 921 cannot fill all the space in the installation area. In this way, in the installation area between an air guide ring 921 and the positioning frame 91 far from the center of the circle, the first air guide strips 922 with an arc structure can be connected and filled, so that the gaps between the grille strips 92 can prevent debris or human hands from entering the installation cavity 71.

[0078] In some embodiments, the ends of the plurality of connection ribs 93 away from the positioning frame 91 can be connected and fixed to form a support portion 94, so that the positioning frame 91 can form a stable frame structure with the plurality of connection ribs 93 for connecting and installing the plurality of grille bars 92. In this case, the support portion 94 can refer to the intersection and connection position of the plurality of connection ribs 93.

[0079] In some other embodiments, such as Figure 3 As shown, the support portion 94 may also be an independent plate-like structure, sheet-like structure or frame structure. Thus, a connecting rib 93 may be connected to the support portion 94 and the positioning frame 91 so that the support portion 94 may be stably installed between the positioning frames 91 through a plurality of connecting ribs 93 .

[0080] For example, the support portion 94 may be a regular or irregular shape such as a circle, square, rectangle, parallelogram, pentagon, hexagon, etc. Based on this, the plurality of air guide rings 921 are concentric ring structures distributed at intervals with the support portion 94 as the center.

[0081] Between an air guide ring 921 (such as the smallest air guide ring 921) close to the support portion 94 and the support portion 94, the air guide ring 921 can be fixedly connected to a part of the structure of the support portion 94 and a plurality of connecting ribs 93 so that there is a suitable gap between the air guide ring 921 and the support portion 94.

[0082] Alternatively, a larger gap (i.e., installation area) may be provided between an air guide ring 921 close to the support portion 94 and the support portion 94. Figure 3 As shown, the grille member 90 may further include a second air guide strip 923 .

[0083] The number of the second air guide strips 923 may be one or more, for example, the second air guide strips 923 may be an arc-shaped structure, and are located in the installation area between the support portion 94 and the air guide ring 921. One or more second air guide strips 923 may be arranged at intervals and connected to the support portion 94 and / or the corresponding connecting ribs 93, so that a gap of appropriate size may be formed between the air guide ring 921 and the support portion 94 through one or more second air guide strips 923 for air circulation.

[0084] In this way, by installing the grille member 90 at the air outlet 72, external debris can be prevented from entering the installation cavity 71 through the air outlet 72 to affect the rotation of the blades of the fan assembly 80. In addition, the setting of the grille member 90 can also prevent human hands from touching the blades of the fan assembly 80 through the air outlet 72.

[0085] However, for the air outlet 72, the air blown out by the fan assembly 80 will collide with the rear end surfaces of the grille bars 92 and the connecting ribs 93 on the grille member 90, which is equivalent to the setting of the grille member 90 reducing the air outlet area of ​​the air outlet 72, so that the air outlet 72 has a larger wind resistance.

[0086] Based on this, if the gap between two adjacent grille bars 92 is set smaller, although it can effectively prevent external debris and human hands from entering the installation cavity 71 through the air outlet 72, the denser grille bars 92 will cause greater wind resistance at the air outlet 72, thereby reducing the air flow through the outdoor heat exchanger 30 at the outdoor unit and causing greater aerodynamic noise. However, if the gap between two adjacent grille bars 92 is adjusted to increase, although the wind resistance at the air outlet 72 can be reduced, the effect of the grille member 90 in shielding debris and human hands will be poor.

[0087] In order to solve the above problems, Figure 4 and Figure 5 As shown, Figure 4 For along Figure 3 The cross-section diagram of the AA line, Figure 5 for Figure 4 A partial enlarged schematic diagram of the middle and upper air guide ring 921, the outer edge (i.e., the front edge) of the air guide ring 921 can be set to be inclined in the direction away from the support portion 94 at an angle of the air outlet angle α. For example, when the position of the grille member 90 is fixed, the front edge of the portion of the air guide ring 921 located above the support portion 94 can be set to be inclined upward, the front edge of the portion of the air guide ring 921 located below the support portion 94 can be set to be inclined downward, the front edge of the portion of the air guide ring 921 located on the left side of the support portion 94 can be set to be inclined to the left, and the front edge of the portion of the air guide ring 921 located on the right side of the support portion 94 can be set to be inclined to the right.

[0088] Thus, through the arrangement of the above scheme, the adjusted grille member 90 can have a small wind resistance, which is conducive to increasing the air volume of the outdoor unit. In addition, the inclined grille bars 92 can better guide the blowing of wind, and at the same time greatly optimize the wind beam of the wind field, so that the air delivery distance of the wind field is longer.

[0089] It should be noted that, in the embodiment of the present application, the air outlet angle α refers to the air outlet angle of the front edge of all grille bars 92 in the direction away from the support portion 94 compared to the axis (i.e., the front-to-back direction). For example, the air outlet angle of the front edge of the air guide ring 921 in the direction away from the support portion 94 compared to the axis, the air outlet angle of the front edge of the first air guide bar 922 in the direction away from the support portion 94 compared to the axis, and the air outlet angle of the front edge of the second air guide bar 923 in the direction away from the support portion 94 compared to the axis, wherein the sizes of the air outlet angles on the same grille bar 92 may be the same or different, and there is no limitation on this.

[0090] Combination Figure 6 When the air is blown forward through the grille member driven by the fan assembly, taking the fan assembly 80 as an axial flow fan as an example, the rotating shaft of the fan assembly 80 and the positioning frame 91 (such as Figure 4 Based on this, when the air flows through the gaps between the grille bars 92 and blows forward, part of the air can be blown out in the front-to-back direction, but part of the air deviates and tilts in the direction away from the axis during the forward blowing process.

[0091] like Figure 7 As shown, Figure 7 for Figure 5 A partial cross-sectional schematic diagram of the air guide ring 921 is shown in FIG. 1 , defining the air guide ring 921 (or the grille bar 92) close to the support portion 94 (such as Figure 4 The side of the air guide ring 921 away from the support portion 94 is the windward side 9241, and the side of the air guide ring 921 away from the support portion 94 is the leeward side 9242, and the obliquely flowing air will flow toward the direction close to the support portion 94 after being reflected by the windward side 9241. In this way, this part of the air will form a turbulent flow or vortex with the part of the air flowing in the front-back direction, so that the air blown out of the installation cavity 71 has a large wind resistance and startup noise, such as Figure 8 As shown, the forward air supply distance L1 of the outdoor unit of the air conditioner 100 is short.

[0092] However, by optimizing and adjusting the grille bars 92 (especially the air guide ring 921) in the above solution, the front edge of the grille bars 92 can be tilted in a direction away from the support portion 94 compared to the rear edge. In this way, after the partially tilted air contacts the windward surface 9241 and is reflected, the angle between its flow direction and the axis (i.e., the front-to-back direction) will be reduced, that is, compared with the solution before the improvement, the deviation angle of the reflected air toward the axis is reduced.

[0093] Thus, through the arrangement of the above scheme, the air blown forward by the grille member 90 can be better guided, so that more air can be blown forward, and the air turbulence and eddy current in front of the grille member 90 can be reduced. This is beneficial to reducing the wind resistance and aerodynamic noise of the outdoor unit, and is beneficial to increasing the forward air supply distance of the outdoor unit to avoid the air after heat exchange being re-inhaled to affect the heat exchange efficiency of the outdoor heat exchanger, which is beneficial to improving the heat exchange efficiency of the outdoor unit.

[0094] It should be noted that in the embodiment of the present application, the axis of the fan assembly 80 can be set parallel to the front-to-back direction, and the axes of the corresponding air outlet 72, grille member 90, positioning frame 91 and support portion 94 can also be set parallel to the front-to-back direction.

[0095] Based on this, Figure 5 As shown, the value range of the wind outlet angle α can be set to 1° to 8°. If the wind outlet angle is less than 1°, the grille bars 92 (such as the wind guide ring 921) and the like which are arranged obliquely Figure 3 The air guiding property of the grille member 90 is poor. If the inclination angle is greater than 8°, the air outlet area between two adjacent grille bars 92 will be reduced in the front-to-back direction, thereby increasing the wind resistance of the grille member 90 and reducing the air outlet efficiency.

[0096] Therefore, by setting the air outlet angle α to satisfy 1°≤α≤8°, the inclined grille bars 92 can better guide the blowing of the wind, greatly optimizing the wind beam property of the wind field, and making the air delivery distance of the wind field longer. At the same time, the wind resistance at the grille member 90 can be reduced, which is conducive to increasing the air volume at the air outlet 72, that is, improving the heat exchange efficiency of the outdoor heat exchanger 30.

[0097] Exemplarily, the outlet angle α may be 1°, 1.5°, 2°, 2.5°, 3°, 3.5°, 4°, 4.5°, 5°, 5.5°, 6°, 6.5°, 7° or 8°, which is not limited in the present application. For example, the outlet angle α may be set to have a value range of: 1°≤α<3°, 3°≤α<5° or 5°≤α≤8°.

[0098] Taking the case where a plurality of grille bars 92 are arranged in the same plane perpendicular to the front-rear direction as an example, in the plane, the value range of the outlet angle α of the air guide ring 921 is: 1°≤α<3°, 3°≤α<5° or 5°≤α≤8°. If the grille bars 92 further include at least one of the first air guide bar 922 and the second air guide bar 923, the value range of the outlet angle α corresponding to the first air guide bar 922 and / or the second air guide bar 923 may also be: 1°≤α<3°, 3°≤α<5° and / or 5°≤α≤8°.

[0099] In some embodiments, in the air outlet area of ​​the positioning frame 91, from the inside to the outside (i.e., from the support portion 94 toward the positioning frame 91, such as the length direction of the connecting rib 93), the air outlet angle of the grille bar 92 close to the outside can be set to be smaller than the air outlet angle close to the inside. For example, the air outlet angle in the air outlet area close to the positioning frame 91 can be set to be smaller than the air outlet angle in the air outlet area close to the support portion 94, which is beneficial to increase the overall air outlet volume and air supply distance of the grille member 90.

[0100] It should be noted that if Figure 4 As shown, on the inner side of the positioning frame 91 near the support portion 94, a plurality of grid bars 92 can be spaced apart with the support portion 94 as the center. Figure 3 Taking the air guide ring 921 shown as an example, the multiple air guide rings 921 can be a multiple concentric ring structure that increases in size from the inside to the outside.

[0101] In some embodiments, Figure 4 As shown, a plurality of air outlet areas such as a first air outlet area B1 and a second air outlet area B2 may be formed between the positioning frame 91 and the support portion 94. Alternatively, the plurality of air outlet areas between the positioning frame 91 and the support portion 94 may also include a first air outlet area B1, a second air outlet area B2, and a third air outlet area B3.

[0102] Exemplarily, the plurality of air guide rings 921 distributed near the support portion 94 may be located in the first air outlet area B1, that is, the first air outlet area B1 may be arranged around the support portion 94. When the grille bar 92 further includes a second air guide bar 923, one or more second air guide bars 923 are also located in the first air outlet area B1.

[0103] Taking the example that the positioning frame 91 only includes the first air outlet area B1 and the second air outlet area B2, the second air outlet area B2 can be located between the first air outlet area B1 and the positioning frame 91, such as at least part of the air guide ring 921 close to the positioning frame 91 can be located in the second air outlet area B2. In the case where the grille bar 92 also includes a plurality of first air guide bars 922, the plurality of first air guide bars 922 can be located in the second air outlet area B2.

[0104] When the positioning frame 91 includes the first air outlet area B1, the second air outlet area B2, and the third air outlet area B3, at least part of the air guide ring 921 close to the positioning frame 91 may be located in the third air outlet area B3, and another part of the air guide ring 921 may be located in the second air outlet area B2. When the grille bar 92 further includes a plurality of first air guide bars 922, the plurality of first air guide bars 922 may be located in the third air outlet area B3.

[0105] Combination Figure 4 In the first air outlet area B1, the front edges of the grille bars 92 (or the air guide ring 921) may be in the same plane. Alternatively, the grille bars 92 (or the air guide ring 921) in the first air outlet area B1 may be gradually offset backward from the inside to the outside.

[0106] In the second air outlet area B2, at least part of the grille bars 92 (or the air guide ring 921) close to the positioning frame 91 is offset backward, and the degree of backward offset of the grille bars 92 in the second air outlet area B2 is greater than or equal to the degree of backward offset of the grille bars 92 in the first air outlet area B1. For example, the multiple grille bars 92 (or the air guide ring 921) in the second air outlet area B2 are gradually offset backward from the inside to the outside.

[0107] Based on this, the second outlet angle α2 in the second outlet area can be set to be smaller than the outlet angle α1 in the first outlet area B1. For the grille member 90 of the axial flow fan, the air volume of the outer outlet area (such as the second outlet area) is relatively large. By reducing the outlet angle of the outer outlet area, it is beneficial to reduce the overall wind resistance of the grille member 90 and increase the outlet distance.

[0108] In the third air outlet area B3, at least part of the grille bars 92 (or the air guide ring 921) close to the positioning frame 91 is offset backward, and the degree of backward offset of the grille bars 92 in the third air outlet area B3 is greater than or equal to the degree of backward offset of the grille bars 92 in the second air outlet area B2. For example, multiple grille bars 92 (or the air guide ring 921) in the third air outlet area B3 are gradually offset backward from the inside to the outside.

[0109] Based on this, the third outlet angle α3 in the third outlet area can be set to be smaller than the outlet angle α2 in the second outlet area B2. For the grille member 90 of the axial flow fan, the air volume of the outer outlet area (such as the third outlet area) is relatively large. By reducing the outlet angle of the outer outlet area, it is beneficial to reduce the overall wind resistance of the grille member 90 and increase the air outlet distance.

[0110] In the above embodiment, the air guide ring 921 in the same air outlet area may be a complete air guide ring 921 or an incomplete air guide ring 921. For example, one or more complete air guide rings 921 may be provided in the second air outlet area B2, or part of the air guide rings 921 in the second air outlet area B2 may include one or more incomplete air guide rings 921, and another part of these incomplete air guide rings 921 may be located in the first air outlet area B1 and / or the third air outlet area B3.

[0111] For example, taking the positioning frame 91 of the grille member 90 forming a leaf-shaped frame structure as an example, between the two connection points of the first side bar 911 and the second side bar 912, a boundary line can be set between the two connection points, and the grille bars 92 on the boundary line can separate the second air outlet area B2 and the third air outlet area B3.

[0112] In some embodiments, the area of ​​the first air outlet area B1 can be set to be 2 to 3 times the area of ​​the second air outlet area B2. Alternatively, the area of ​​the second air outlet area B2 can be set to be 2 to 4 times the area of ​​the third air outlet area B3, which is beneficial to improving the overall air outlet uniformity of the grille member 90.

[0113] For example, the area ratio of the first air outlet region B1 , the second air outlet region B2 , and the third air outlet region B3 may be set to 8:3:1, which is beneficial to improving the overall air outlet uniformity of the grille member 90 .

[0114] Based on this, if the grille member 90 is provided with a first air outlet area B1, a second air outlet area B2, and a third air outlet area B3, the first air outlet angle of the grille bar 92 in the first air outlet area B1 can be set to 5°≤α1≤8, the second air outlet angle of the grille bar 92 in the second air outlet area B2 can be set to 3°≤α2<5°, and the third air outlet angle of the grille bar 92 in the third air outlet area B3 can be set to 1°≤α3<3°. For example, the air outlet angles of the first air outlet area B1, the second air outlet area B2, and the third air outlet area B3 can be set to 5°, 3°, and 1°, respectively. Fig. 9 Through the wind field simulation experiment, it can be known that in the improved scheme, the forward air supply distance L2 of the outdoor unit of the air conditioner 100 is greater than L1 and is beneficial to improving the heat exchange efficiency of the outdoor heat exchanger in the outdoor unit.

[0115] The air outlet angle α includes a first air outlet angle α1, a second air outlet angle α2 and a third air outlet angle α3.

[0116] In some other embodiments, if a first air outlet area B1 and a second air outlet area B2 are provided in the grille member 90 at the same time, the first air outlet angle of the grille bars 92 in the first air outlet area B1 can be set to 5°≤α1≤8, and the second air outlet angle of the grille bars 92 in the second air outlet area B2 can be set to 3°≤α2<5° or 1°≤α2<5°, which is also beneficial to improving the forward air supply distance of the outdoor unit and the heat exchange efficiency of the outdoor heat exchanger.

[0117] Based on this, combined Fig.10 , Fig.10 FIG. 1 is a schematic diagram of air flow between two adjacent air guide rings 921 in a related solution. Obviously, between two adjacent air guide rings 921 (or two adjacent grille bars 92), air with a flow angle C1 will flow on the windward surfaces 9241 (such as Figure 7 The air is reflected between the leeward surface 9242 at least three times and then blown out, so that there is a larger wind resistance between two adjacent air guide rings 921.

[0118] However, through the above improvement scheme, Fig.11 As shown, Fig.11 FIG. 9 is a schematic diagram of air flow between two adjacent air guide rings 921 after improvement. Fig.10 When the angle shown by C1 in FIG. 1 flows into between the two air guide rings 921, Fig.11 An air flow path as shown in C2 can be formed, that is, the air can be reflected twice between the windward surface 9241 and the leeward surface 9242 and then blown forward.

[0119] That is, through the inclined arrangement of the grille bars 92 and the arrangement of at least one of the second air outlet area B2 and the third air outlet area B3 in the above solution, it is helpful to reduce the number of reflections of part of the air between two adjacent grille bars 92. In this way, it is helpful to reduce the air turbulence and eddy current between the two grille bars 92, thereby reducing the wind resistance of the grille member 90 without changing the spacing between the grille bars 92.

[0120] like Figure 5 and Figure 7 As shown, since the grille bar 92 (or the air guide ring 921) is away from the support portion 94 (such as Figure 4 The side of the grille bar 92 (such as the upper side) facing the support portion 94 is the leeward side 9242, and the side of the grille bar 92 facing the support portion 94 (such as the lower side) is the windward side 9241. The grille bar 92 (or the air guide ring 921) can be defined as the side of the grille bar 92 (or the air guide ring 921) along the circumference of the positioning frame 91 close to the fan assembly (such as Figure 2 The inner end surface 9243 (i.e., the rear side) of the device.

[0121] Based on this, continue to refer to Fig.10 , with the inner end surface 9243 (such as Figure 7 As an example, after a portion of the air with a flow angle of C1 is blown toward and contacts the inner end surface 9243, it will be reflected backward and flow into Figure 3 The mounting cavity 71 is shown, thereby reducing the air flow at the air outlet 72 and increasing the wind resistance.

[0122] To solve this problem, Figure 7 As shown, the air guide ring 921 (or may be) may also have a chamfered slope 9244, and the leeward surface 9242 may be connected to the inner end surface 9243 via the chamfered slope 9244. As the air flows through the grille member 90, it is either blown forward or blown obliquely forward and toward the windward surface 9241 and the inner end surface 9243.

[0123] Combination Figure 7 and Fig.11 By setting a chamfered surface between the leeward surface 9242 and the inner end surface 9243, part of the air is in the Fig.10 When the flow angle E1 is blown to the air guide ring 921 or the grille bar 92, part of the air can be Fig.11 The air is blown toward the windward surface 9241 along the missing corner area of ​​the chamfered inclined surface 9244 at an angle as shown in E2. After contacting the front position of the windward surface 9241 and being reflected, the air can be directly blown out of the outlet 72 (as shown in FIG. Figure 3 shown).

[0124] In this way, by setting the chamfered surface 9244, this part of the air can be blown forward more smoothly along the angle of the chamfered surface 9244, which is equivalent to reducing the air resistance of the grille member 90 and is beneficial to increasing the air output of the outdoor unit.

[0125] In some embodiments, Figure 7 and Fig.11 As shown, taking the vertical line as a straight line perpendicular to the front-back direction (i.e., the axial direction of the positioning frame 91) as an example, the minimum angle formed by the chamfered slope 9244 and one of the vertical lines can be defined as the slope angle β of the chamfered slope 9244, and the value range of the slope angle β can be set to 45° to 60°. Among them, if the angle β is less than 45°, the amount of air blown out along the E2 path will be reduced, and if the angle β is greater than 60°, the range of the area with a thinner thickness at the rear end of the grille bar 92 will be increased, that is, by the slope angle 45°≤β≤60°, the air resistance of the grille member 90 can be further reduced and it is beneficial to increase the air output of the outdoor unit.

[0126] Exemplarily, the bevel angle β can be set to 45°, 50°, 55°, 60°, etc. For example, the bevel angle β can be set to have a value range of: 45°≤β<50°, 50°≤β<55°, or 55°≤β≤60°.

[0127] Based on this, the grille member 90 is manufactured by taking the first air outlet area B1, the second air outlet area B2 and the third air outlet area B3 as 5°, 3° and 1° respectively, and the slope angle β is 45°. Through the simulated wind field test, it can be seen that the wind field trajectory of the outdoor unit installed with this solution at the air outlet is as follows Fig.12 As shown, the special-shaped curved grille member 90 provided with the second air outlet area B2 and the third air outlet area B3 approximately fits the wind field trajectory, which is beneficial to reducing the wind resistance at the grille member 90 and reducing the generation of aerodynamic noise.

[0128] Based on this, combined Fig.13 , by setting Fig.12 The overall wind field simulation of the outdoor unit of the scheme shown in the figure shows that the forward air supply distance L3 of the outdoor unit of the air conditioner 100 in the improved scheme is greater than Fig. 9 The air supply distance L2 in the air outlet is further reduced, that is, the wind resistance at the air outlet is further reduced and it is beneficial to increase the air volume. Figure 8 (Scheme 1) and Fig.13 The outdoor units of the two air conditioners 100 shown in (Scheme 2) are simulated and compared, with the air volume and noise intensity at the same speed as reference, and the parameters shown in Tables 1 and 2 can be obtained through simulation tests.

[0129] Table 1

[0130] Fan assembly speed (r / min) <![CDATA[Air volume of Plan 1 (m 3 / h)]]> <![CDATA[Air volume of Plan 2 (m 3 / h)]]> 730 3701.98 3791.22 820 4227.23 4304.53 850 4402.55 4465.84 890 4641.85 4710.81

[0131] Table 2

[0132] Fan assembly speed (r / min) Scheme 1 Noise / dB(A) Plan 2 Air volume / dB(A) 730 39.4 35.8 820 55.8 54.5 850 56.8 55.0 890 58.3 57.6

[0133] Combining the parameters shown in Table 1 and Table 2, it can be seen that at different speeds, the air volume of the improved scheme 2 is increased and the noise is reduced compared with the scheme 1 before the improvement. In summary, the present application significantly improves the air volume and air supply distance at the outdoor unit outlet through the improvement of the grille member 90, and effectively reduces the noise intensity at the outlet.

[0134] On this basis, the bevel angle in the first air outlet area B1 can also be set to be greater than the bevel angle in the second air outlet area B2, and the bevel angle in the second air outlet area B2 can be greater than the bevel angle in the third air outlet area B3. For example, the bevel angles β in the first air outlet area B1, the second air outlet area B2, and the third air outlet area B3 can be 55°≤β≤60°, 50°≤β<55°, and 45°≤β<50°, respectively, or the bevel angles β in the first air outlet area B1, the second air outlet area B2, and the third air outlet area B3 can also be reduced in sequence within one of the value intervals of 55°≤β≤60°, 50°≤β<55°, or 45°≤β<50°.

[0135] In this way, since the larger bevel angle β can reduce the wind receiving area of ​​the inner end surface 9243 of the inner side of the grille bar 92, it is helpful to reduce the wind resistance at the corresponding wind outlet area to increase its air volume. The sequential increase of the third air outlet angle, the second air outlet angle and the first air outlet angle makes the wind resistance of the third air outlet area B3, the second air outlet area B2 and the first air outlet area B1 increase successively. In this way, the stepwise distribution of the above-mentioned bevel angles is helpful to balance the increase in wind resistance caused by the air outlet angles, thereby helping to further reduce the overall wind resistance of the grille member 90 and increase its air volume. In some embodiments, the leeward surface 9242 can be connected to the chamfered bevel 9244 through a rounded structure, the inner end surface 9243 can be connected to the chamfered bevel 9244 through a rounded structure, and the windward surface 9241 can be connected to the leeward surface 9242 through a rounded structure. The above three rounded corner structures can be set one by one, or two or all of them can be selected and set, wherein the radius of the rounded corner structure can be 0.5 to 0.7 times the thickness of the grille bar 92, such as the radius of the rounded corner structure can be 0.5, 0.6 or 0.7 times the thickness of the grille bar 92.

[0136] In this way, when the air flows through the rear edge of the grille bar 92, the arrangement of the rounded corner structure helps to reduce the wind resistance and startup noise of the air at that location.

[0137] In some embodiments, in combination Figure 5 and Figure 7 , between two adjacent air guide rings 921 of the grille bar 92, the vertical spacing between the two adjacent air guide rings 921 is the gap size M between the two air guide rings 921. The gap size can be set to be less than or equal to 8.0 mm, meeting the design index of the national standard parameter 8.6 mm.

[0138] For example, the gap size between two adjacent air guide rings 921 may be set to 7.3 mm ≤ M ≤ 8 mm, so that the grille member 90 can effectively prevent external debris or fingers from being inserted into the installation cavity 71, and the outdoor unit can have less wind resistance and air volume at the air outlet 72. This is beneficial to improving the heat exchange efficiency of the outdoor unit and reducing its noise.

[0139] In some other embodiments, combined with Figure 5 and Figure 7 At a grid bar 92 such as an air guide ring 921, the thickness dimension of the air guide ring 921 may be the vertical distance between its windward surface 9241 and its first leeward surface 9242, that is, the thickness dimension d may be set to 1.5 mm to 3 mm. For example, the thickness dimension d may be 1.5 mm ≤ d < 2 mm, 2 mm ≤ d < 2.5 mm, or 2.5 mm ≤ d ≤ 3 mm, which is not limited thereto.

[0140] It should be noted that in the embodiment of the present application, the first air guide strip 922 and the second air guide strip 923 in the grille strip 92 can also be set according to the above-mentioned gap size M and thickness size d. The first air guide strip 922 and the second air guide strip 923 in the corresponding grille strip 92 can also be set according to the air outlet angle α, the chamfered inclined surface 9244 and the rounded corner structure in the above-mentioned solution, and the present application does not limit this.

[0141] In the description of this specification, specific features, structures, materials or characteristics may be combined in an appropriate manner in any one or more embodiments or examples.

[0142] The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. An air conditioner with a grille, comprising an outdoor unit, characterized in that: The outdoor unit comprises: A housing having a mounting cavity and an air outlet; Outdoor heat exchanger; A fan assembly, wherein the fan assembly and the outdoor heat exchanger are located in the installation cavity, and the fan assembly is used to drive air to flow through the outdoor heat exchanger and blow out from the air outlet; and a grille member, the grille member comprising: A positioning frame, installed close to the air outlet; A support portion, wherein the positioning frame is arranged on the outer periphery of the support portion; A plurality of connecting ribs, wherein the connecting ribs are connected between the supporting portion and the positioning frame, and the plurality of connecting ribs are spaced apart and distributed along the circumference of the supporting portion; A plurality of air guide rings, wherein the plurality of air guide rings are installed between the positioning frame and the support portion at intervals at least through a plurality of connecting ribs; Among them, there are multiple air outlet areas between the positioning frame and the support part; along the axial direction of the positioning frame, the inclination angle of the air guide ring away from the outer edge of the fan assembly toward the direction away from the support part is the air outlet angle, and the air outlet angle in the air outlet area close to the positioning frame is smaller than the air outlet angle in the air outlet area close to the support part.

2. The air conditioner with a grille according to claim 1, characterized in that: The plurality of air outlet areas at least include: A first air outlet area, wherein the plurality of air guide rings close to the support portion are located in the first air outlet area; and a second air outlet area, the second air outlet area being located between the first air outlet area and the positioning frame; In the second air outlet area, along the axial direction of the positioning frame, at least part of the air guide ring close to the positioning frame is offset toward the direction close to the fan assembly, and the second air outlet angle in the second air outlet area is smaller than the first air outlet angle in the first air outlet area.

3. The air conditioner with grille according to claim 2, characterized in that: The plurality of air outlet areas further include: a third air outlet area, the third air outlet area being located between the second air outlet area and the positioning frame, at least a portion of the air guide ring close to the positioning frame being located in the third air outlet area, and another portion of the air guide ring being located in the second air outlet area; In the third air outlet area, along the axial direction of the positioning frame, at least part of the air guide ring close to the positioning frame is offset toward the direction close to the fan assembly, and a third air outlet angle in the third air outlet area is smaller than the second air outlet angle.

4. The air conditioner with grille according to claim 2 or 3, characterized in that: The area of ​​the first air outlet region is 2 to 3 times the area of ​​the second air outlet region; and / or, The value range of the first air outlet angle α1 is 5°≤α1≤8°; and / or, The value range of the second air outlet angle α2 is 1°≤α2<5°.

5. The air conditioner with grille according to claim 3, characterized in that: The area of ​​the second air outlet region is 2 to 4 times the area of ​​the third air outlet region; and / or, The value range of the third air outlet angle α3 is 1°≤α3<3°, and the value range of the second air outlet angle α2 is 3°≤α2<5°.

6. The air conditioner with grille according to claim 3, characterized in that: The ratio of the area of ​​the first air outlet region, the area of ​​the second air outlet region and the area of ​​the third air outlet region is 8:3:1; and / or, The first air outlet angle is 5°, the second air outlet angle is 3°, and the third air outlet angle is 1°.

7. The air conditioner with a grille according to any one of claims 1 to 3, characterized in that: The side of the air guide ring away from the support portion is a leeward surface, and the inner end surface of the air guide ring close to the fan assembly along the axial direction of the positioning frame is connected to the leeward surface through a chamfered inclined surface.

8. The air conditioner with grille according to claim 7, characterized in that: The minimum angle between the chamfered surface and the vertical line is the chamfered surface angle β; the chamfered surface angle has a value range of 45°≤β<50°, 50°≤β<55° or 55°≤β≤60°; Wherein, the vertical line is a straight line perpendicular to the axial direction of the positioning frame.

9. The air conditioner with grille according to claim 8, characterized in that: In the case where the air outlet area includes a first air outlet area, a second air outlet area, and a third air outlet area: The slope angle in the first air outlet area is greater than the slope angle in the second air outlet area, and the slope angle in the second air outlet area is greater than the slope angle in the third air outlet area.

10. The air conditioner with a grille according to any one of claims 1 to 3, characterized in that: The grille member further comprises: A plurality of first air guide strips, wherein the first air guide strips are arc-shaped structures; in the air outlet area between the air guide ring and the positioning frame, the plurality of first air guide strips are arranged at intervals and connected to at least one of the connecting rib and the positioning frame; the outer edge of the first air guide strip is inclined in a direction away from the support portion to form the air outlet angle; and / or, A plurality of second air guide strips, each of which is an arc-shaped structure. In the air outlet area between the support portion and the air guide ring, the plurality of second air guide strips are arranged at intervals and connected to the support portion and at least one of the connecting ribs; an outer edge of the second air guide strip is inclined toward a direction away from the support portion to form the air outlet angle.

Images