Air conditioner outdoor unit and air conditioner

Abstract

The air conditioner outdoor unit comprises a shell, a draught fan and a flow guide piece, the shell is provided with an air inlet and an air outlet, the air outlet is formed in the top of the shell, the air inlet is formed in the side portion of the shell, and the distance between the top wall and the bottom wall of the shell is H; the fan drives airflow to enter the shell through the air inlet and to be exhausted through the air outlet; the flow guide part is arranged in the shell and provided with a flow guide channel, the air outlet side of the flow guide channel is opposite to the air outlet, the extending distance of the flow guide part in the shell is L, and L / H is larger than 0.025 and smaller than 0.4. According to the air conditioner outdoor unit, side air inlet and top air outlet are adopted, the flow guide part is arranged in the shell, the air outlet side of the flow guide part is opposite to the air outlet, part of the area of the wind wheel is arranged in the flow guide part, and air pulsation is reduced while the air volume is increased; the size of the flow guide part is limited, the influence of the flow guide part on the air inlets in the shell can be reduced, more air inlets can be formed in the shell, and the air inlet amount is increased.

Description

Technical Field

[0001] The utility model relates to the technical field of air conditioning, and in particular to an air conditioning outdoor unit and an air conditioner. Background Art

[0002] This section merely provides background information related to the present disclosure and is not necessarily prior art.

[0003] At present, in order to improve the circulation capacity of air flow in the air conditioner outdoor unit, it is usually necessary to set a guide member. The position and structure of the guide member sometimes affect the layout of the air inlet of the air conditioner outdoor unit, resulting in a reduction in the air intake volume of the air conditioner outdoor unit, which in turn affects the heat exchange capacity of the air conditioner outdoor unit. Utility Model Content

[0004] The purpose of the utility model is to at least solve the technical problem of how to determine the size and arrangement position of the flow guide in the air conditioning system. This purpose is achieved through the following technical solutions:

[0005] A first aspect of the utility model provides an air-conditioning outdoor unit, the air-conditioning outdoor unit comprising:

[0006] A shell, the shell having an air inlet and an air outlet, the air outlet is arranged at the top of the shell, the air inlet is arranged at the side of the shell, and the distance between the top wall and the bottom wall of the shell is H;

[0007] A fan, the fan is used to drive air flow into the housing through the air inlet and be discharged through the air outlet;

[0008] The guide member is arranged in the shell, the guide member has a guide channel, the air outlet side of the guide channel is arranged opposite to the air outlet, and the extension distance of the guide member in the shell is L, 0.025<L / H<0.4.

[0009] The air-conditioning outdoor unit of the utility model adopts a side air inlet and top air outlet structure. The guide member is arranged in the shell, and the air outlet side of the guide member is arranged opposite to the air outlet. Part of the area of ​​the wind wheel is arranged in the guide member, so that the airflow is more stable when it flows to the air outlet position of the shell, and the air volume is increased while reducing the air flow fluctuation. At the same time, the size of the guide member is limited. The guide member extends from the air outlet into the shell for a distance L, and the distance between the top wall and the bottom wall of the shell is H, 0.025<L / H<0.4, which can reduce the influence of the guide member on the air inlet on the shell, and more air inlets can be arranged on the shell, thereby increasing the air volume.

[0010] In addition, the air conditioner outdoor unit according to the utility model may also have the following additional technical features:

[0011] In some embodiments of the present invention, the fan includes a wind wheel, which is disposed in the housing and at least partially disposed in the flow guide member.

[0012] In some embodiments of the present invention, the wind wheel is provided with at least one blade, the blade having a blade trailing edge and a blade outer edge, the blade outer edge is located on a side of the blade away from the rotation axis of the wind wheel, and the direction of the blade trailing edge is opposite to the rotation direction of the wind wheel.

[0013] Wherein, the intersection area between the trailing edge of the fan blade and the outer edge of the fan blade is arranged in the guide member.

[0014] In some embodiments of the present invention, the flow guide channel includes an inlet section, a middle section and an outlet section which are connected in sequence, and the inner diameter of the inlet section gradually decreases along the direction from the inlet section to the outlet section.

[0015] Wherein, the intersection area of ​​the trailing edge of the fan blade and the outer edge of the fan blade is arranged in the inlet section, or the intersection area of ​​the trailing edge of the fan blade and the outer edge of the fan blade is arranged in the middle section.

[0016] In some embodiments of the present invention, the guide channel is extended from the top wall to the bottom wall, and the value range of L / H is greater than or equal to 0.05 and less than or equal to 0.25.

[0017] In some embodiments of the present invention, the air inlet is arranged on the side of the shell and is located below the guide member.

[0018] In some embodiments of the present invention, the outlet section is provided with a first noise reduction structure, and the first noise reduction structure includes a cut portion formed on the inner wall of the outlet section.

[0019] In some embodiments of the present invention, the inlet section is provided with a second noise reduction structure, and the second noise reduction structure includes a protrusion formed on the inner wall of the inlet section.

[0020] In some embodiments of the present invention, the first noise reduction structure comprises a plurality of the cut-out portions, and the plurality of the cut-out portions are arranged at intervals along the circumference of the outlet section; and / or

[0021] The second noise reduction structure includes a plurality of protrusions, and the plurality of protrusions are arranged at intervals along the circumferential direction of the inlet section.

[0022] A second aspect of the utility model provides an air conditioner, comprising an air conditioner outdoor unit as described in any one of the above items. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] By reading the detailed description of the preferred embodiment below, various other advantages and benefits will become clear to those of ordinary skill in the art. The accompanying drawings are only used for the purpose of illustrating the preferred embodiment and are not to be considered as limiting the present invention. Moreover, the same reference numerals are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0024] Figure 1 This is a structural schematic diagram of an air-conditioning outdoor unit according to an embodiment of the utility model;

[0025] Figure 2 This is a schematic diagram of the internal structure of an air-conditioning outdoor unit according to an embodiment of the utility model;

[0026] Figure 3 A schematic diagram of the positional relationship between the air guide member and the wind wheel of an air conditioner outdoor unit according to an embodiment of the utility model;

[0027] Figure 4 A schematic structural diagram of a wind wheel of an outdoor unit of an air conditioner according to an embodiment of the utility model;

[0028] Figure 5 A three-dimensional diagram of a fan wheel of an air conditioner outdoor unit according to an embodiment of the utility model;

[0029] Figure 6 A schematic structural diagram of a flow guide member of an air conditioner outdoor unit according to an embodiment of the utility model;

[0030] Figure 7 The noise curve of the outdoor unit of an air conditioner under different air inlet conditions according to an embodiment of the present invention.

[0031] The reference numerals are as follows:

[0032] 100. Air conditioner outdoor unit;

[0033] 110. housing; 111. air inlet; 112. air outlet;

[0034] 120, flow guide; 121, flow guide channel; 122, inlet section; 123, outlet section; 124, middle section;

[0035] 130, wind wheel; 131, fan blade; 132, trailing edge of fan blade; 133, outer edge of fan blade; 134, rotation axis; 135, intersection area;

[0036] 140. A first noise reduction structure; 141. A cut surface;

[0037] 150. A second noise reduction structure; 151. A raised portion;

[0038] H, the distance from the top wall to the bottom wall of the shell;

[0039] L: The distance the guide extends from the air outlet into the shell. DETAILED DESCRIPTION

[0040] The exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided in order to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0041] It should be understood that the terms used herein are only for the purpose of describing specific example embodiments and are not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms "one", "an" and "said" as used herein may also be meant to include plural forms. The terms "include", "comprise", "contain", and "have" are inclusive, and therefore specify the existence of stated features, steps, operations, elements and / or parts, but do not exclude the existence or addition of one or more other features, steps, operations, elements, parts, and / or combinations thereof. The method steps, processes, and operations described herein are not interpreted as necessarily requiring them to be performed in the specific order described or illustrated, unless the execution order is clearly indicated. It should also be understood that additional or alternative steps may be used.

[0042] Although the terms first, second, third, etc. can be used in the text to describe multiple elements, components, regions, layers and / or sections, these elements, components, regions, layers and / or sections should not be limited by these terms. These terms can only be used to distinguish an element, component, region, layer or section from another region, layer or section. Unless the context clearly indicates, terms such as "first", "second" and other numerical terms do not imply order or sequence when used in the text. Therefore, the first element, component, region, layer or section discussed below can be referred to as the second element, component, region, layer or section without departing from the teaching of the example embodiments.

[0043] For ease of description, spatial relative terms may be used herein to describe the relationship of one element or feature relative to another element or feature as shown in the figure, such as "inside", "outside", "inner side", "outer side", "below", "below", "above", "above", etc. Such spatial relative terms are intended to include different orientations of the device in use or operation in addition to the orientation depicted in the figure. For example, if the device in the figure is turned over, then the elements described as "below other elements or features" or "below other elements or features" will subsequently be oriented as "above other elements or features" or "above other elements or features". Therefore, the example term "below..." can include both upper and lower orientations. The device can be oriented otherwise (rotated 90 degrees or in other directions) and the spatial relative descriptors used in the text are interpreted accordingly.

[0044] The air-conditioning outdoor unit of the utility model adjusts the internal structure of the air-conditioning outdoor unit in view of the air intake volume in the shell, the stability of the airflow, and the noise generated by the airflow. By adjusting the position of the air guide member in the shell, the relative position between the air guide member and the wind wheel, and the relative size between the air guide member and the shell, the air-conditioning outdoor unit has higher efficiency and stability and lower noise during operation.

[0045] In response to the problem of air intake volume, the air-conditioning outdoor unit of the present invention takes into account the guiding effect of the air guide member on the airflow within the shell, and reduces the influence of the air guide member on the air inlet on the side wall of the shell by limiting the size of the air guide member within the shell, so that more air inlets can be arranged on the shell of the air-conditioning outdoor unit, thereby increasing the air intake volume. In addition, the air-conditioning outdoor unit of the present invention adopts a side air intake structure, and air inlets can also be arranged on the side walls of the shell in different directions, further increasing the number of air inlets, which plays an important role in forming a stable airflow and sufficient air volume within the shell.

[0046] In order to solve the problem of airflow stability, the utility model sets all or part of the area of ​​the wind wheel in the shell of the air-conditioning outdoor unit within the guide member, so that when the wind wheel drives the airflow to flow from the air inlet to the air outlet, the possibility of airflow pulsation can be reduced under the guiding effect of the guide member, which plays an important role in improving the stability of the airflow and enables the air-conditioning outdoor unit to output the airflow stably. In addition, the guide member is set at the air outlet position of the shell, so that even if the airflow interferes with different components in the shell and is disturbed by some components, the airflow can eventually tend to be stabilized through the guiding effect of the guide member located at the outlet position.

[0047] In order to solve the noise problem caused by airflow, the air-conditioning outdoor unit of the utility model limits the relative size between the air guide and the shell in the height direction, so that the wind wheel can operate for a long time with low noise no matter how much air volume is output during rotation, and the technical solution defined by the utility model is verified by experimental data.

[0048] The air conditioner outdoor unit of the present invention is explained below in conjunction with the accompanying drawings. It should be noted that the accompanying drawings are only used to explain different embodiments of the present invention and cannot be understood as limiting the present invention.

[0049] Figure 1 FIG. 1 is a schematic diagram of the structure of an air-conditioning outdoor unit according to an embodiment of the present invention. Figure 1 As shown, the air-conditioning outdoor unit 100 of the utility model has an air inlet 111 and an air outlet 112, the air outlet 112 is arranged on the top of the shell 110, and the air inlet 111 is arranged on the side of the shell 110. The air-conditioning outdoor unit 100 of this embodiment is suitable for a side air inlet and top air outlet structure, wherein the air inlet 111 is arranged on the side wall of the shell 110, which is beneficial to increase the number and size of the air inlet 111. For example, the air inlet 111 can be arranged on the side walls in multiple directions, which can increase the air inlet area on the shell 110.

[0050] The advantage of such an arrangement is that it can also increase the heat exchange efficiency of the airflow in the housing 110 of the air conditioner outdoor unit. In particular, when the heat exchanger is arranged opposite to the air inlet 111, the heat exchanger can exchange heat with the airflow over a larger area.

[0051] The heat exchanger can also be arranged inside the shell 110 and extend along multiple side walls of the shell 110, so as to exchange heat with the air flow at the air inlet 111 of the shell 110 on the multiple side walls. Designers set the air inlet 111 on the shell 110 and the heat exchanger according to the power and heat exchange efficiency of the air-conditioning outdoor unit 100, thereby improving the applicability of the air-conditioning outdoor unit 100.

[0052] The air outlet 112 is arranged at the top of the shell of the outdoor unit of the air conditioner in this embodiment, and the air outlet 112 can be limited to one area of ​​the shell 110, which is beneficial to guiding the airflow in a specific area within the shell 110 to form a stable airflow. For example, the air conditioner outdoor unit 100 in this embodiment can set the guide member 120 at the air outlet 112 of the shell 110 to concentrate and regulate the airflow from different side walls of the shell 110 to prevent airflow turbulence, thereby avoiding airflow instability and the resulting loud noise.

[0053] Figure 2 FIG. 1 is a schematic diagram of the internal structure of an air conditioner outdoor unit according to an embodiment of the present invention. Figure 2As shown, the air-conditioning outdoor unit 100 of this embodiment also limits the relative size between the shell 110 and the guide member 120. The distance between the top wall and the bottom wall of the shell 110 is H, and the guide member 120 extends into the shell 110 at the air outlet 112 of the shell 110 by a distance L, wherein 0.025<L / H<0.4. The guide member 120 concentrates and regulates the airflow at the air outlet 112 of the shell 110 while reducing the impact on the air inlet area on the side wall of the shell 110.

[0054] It should be noted that in order to improve the guiding effect of the guide member 120 on the airflow in the shell 110, the extended length of the guide member 120 in the shell 110 is usually increased. The size of the unlimited extended guide member 120 will affect the air inlet area on the side wall of the shell 110, that is, the number and size of the air inlets 111 on the shell 110 will be limited. In this way, the reduction in the air intake volume will affect the heat exchange efficiency of the air-conditioning outdoor unit 100. The unreasonable extension of the length of the guide member 120 in the shell 110 is not conducive to improving the operating efficiency of the entire air-conditioning outdoor unit 100. Therefore, the air-conditioning outdoor unit 100 of this embodiment, in view of the above-mentioned problem, limits the relative size between the guide member 120 and the shell 110.

[0055] In one embodiment, the relative dimensions between the guide member 120 and the housing 110 of the air conditioner outdoor unit 100 are as follows: the ratio of L / H is 0.05<L / H≤0.1, 0.1≤L / H<0.25. By testing the air conditioner outdoor unit 100 at different air inlet volumes, the following is obtained: Figure 7 The test data shown in the figure are compared for L / H of 0.1, 0.025 and 0.4, and the corresponding curves of air volume and noise are plotted. Figure 7 It can be seen from the above that when L / H is 0.1, the noise generated when the air-conditioning outdoor unit 100 is set to different air intake volumes is relatively small; under the condition of the same air intake volume, when L / H is 0.025, the noise generated by the air-conditioning outdoor unit 100 is relatively large, followed by the working condition where L / H is 0.4, H is the distance from the top wall to the bottom wall of the shell, and L is the distance that the guide extends from the air outlet into the shell.

[0056] By comparing the noise curves drawn under different working conditions, the size between the guide member 120 and the shell 110 of the air conditioner outdoor unit 100 can be set to 0.05<L / H≤0.1, or 0.1≤L / H<0.25 as needed to output relatively small noise.

[0057] like Figure 2As shown, the air-conditioning outdoor unit of this embodiment has the guide member 120 disposed inside the shell 110, and the air outlet side of the guide member 120 is disposed opposite to the air outlet 112 of the shell 110, so that the airflow from different side walls of the shell 110 can flow to the guide member 120 in a shorter path, and under the guidance of the guide member 120, flow to the air outlet 112 at a certain rate, and finally be discharged from the air-conditioning outdoor unit 100.

[0058] from Figure 2 It can also be seen that the air-conditioning outdoor unit also includes a fan, which is used to drive the air flow into the shell through the air inlet and discharged through the air outlet. The fan includes a wind wheel 130. In the air-conditioning outdoor unit 100, the wind wheel 130 is arranged in the shell 110, and at least a part of the area is located in the guide member 120. Specifically, the guide member 120 has a guide channel 121, and all and part of the wind wheel 130 are arranged in the guide channel 121, so that the air flow generated by the rotation of the wind wheel 130 can be constrained by the guide channel 121 and flow to the air outlet 112 of the shell 110 with higher efficiency.

[0059] Figure 4 This is a schematic structural diagram of a wind wheel of an air conditioner outdoor unit according to an embodiment of the utility model. Figure 5 FIG. 1 is a perspective view of a fan wheel of an air conditioner outdoor unit according to an embodiment of the present invention. Figure 4 and Figure 5 As shown, the wind wheel 130 is provided with three blades 131 , each blade 131 has a blade trailing edge 132 and a blade outer edge 133 , wherein the blade outer edge 133 is located on the side away from the rotation axis 134 of the wind wheel 130 , and the direction of the blade trailing edge 132 is opposite to the rotation direction of the wind wheel 130 .

[0060] In order to reduce the air flow pulsation during the rotation of the wind wheel 130, the intersection area 135 between the rear edge 132 of the fan blade and the outer edge 133 of the fan blade is arranged in the guide member 120. The guide member 120 restricts the air flow generated after the rotation of the wind wheel 130, thereby reducing the noise generated by the air flow pulsation, so that the guide member 120 can regulate the air flow to the greatest extent.

[0061] It should be noted that during the rotation of the wind wheel 130, the airflow formed on the fan blade 131 will separate from the fan blade 131 at the rear edge 132 and the outer edge 133 of the fan blade. In the process of separating from the fan blade 131, airflow pulsation is likely to occur. In particular, in the intersection area 135 between the rear edge 132 and the outer edge 133 of the fan blade, the flow rate and direction of the airflow are in an unstable state. Airflows of different directions and at different rates are likely to interfere with each other in the intersection area 135, resulting in unstable airflow pulsation and the noise generated thereby. The air conditioner outdoor unit 100 in this embodiment constrains the airflow at the intersection area 135 between the rear edge 132 and the outer edge 133 of the fan blade by the guide member 120, so that the unstable airflow gradually becomes stable under the action of the guide member 120, and flows to the air outlet of the shell 110 in a stable state.

[0062] Figure 6 FIG. 1 is a schematic structural diagram of a flow guide member of an air conditioner outdoor unit according to an embodiment of the present invention. Figure 6 As shown, the guide member 120 has a guide channel 121, which includes an inlet section 122 and an outlet section 123. Along the direction from the inlet section 122 to the outlet section 123, the inner diameter of the inlet section 122 gradually decreases; wherein, the intersection area 135 of the blade trailing edge 132 and the blade outer edge 133 is arranged at the inlet section 122.

[0063] The unstable airflow formed at the intersection area 135 between the trailing edge 132 and the outer edge 133 of each blade 131 of the wind wheel 130 can enter the guide channel 121 of the guide member 120. Under the guidance of the guide channel 121, the airflow changes from an unstable state to a stable airflow with roughly the same speed and direction, which is not only beneficial to the flow of the airflow, but also can avoid the formation of greater noise.

[0064] It should be noted that the sources of noise in the air-conditioning outdoor unit of the utility model are: one is that after the vortex separates from the fan blade 131, it causes air pressure pulsation in the airflow wake, and noise is generated when the pulsating air pressure acts on the air supply component; the other is that after the airflow separates from the trailing edge 132 of the fan blade, the airflow fluctuates in the radial direction of the guide member 120.

[0065] like Figure 6 As shown, the guide member 120 also includes a middle section 124 , which is in a straight cylindrical shape and is located between the inlet section 122 and the outlet section 123 ; wherein the intersection area 135 of the blade trailing edge 132 and the blade outer edge 133 is provided in the middle section 124 .

[0066] When the guide channel 121 includes the inlet section 122 , the outlet section 123 and the middle section 124 , the middle section 124 is a straight-cylindrical guide channel 121 , and the middle section 124 is connected to the inlet section 122 and the outlet section 123 .

[0067] In the air conditioner outdoor unit of the present embodiment, the guide channel 121 includes an inlet section 122, an outlet section 123 and an intermediate section 124, wherein the intermediate section 124 is arranged between the inlet section 122 and the outlet section 123, and the straight-cylindrical guide channel 121 is arranged in the intermediate section 124, and the outlet section 123 and the inlet section 122 are both in a trumpet shape, wherein the trumpet shape of the outlet section 123 expands outwardly, and the trumpet shape of the inlet section 122 expands outwardly. In the present embodiment, the outlet section 123 and the inlet end are both arranged in a trumpet shape, which can diffuse the airflow, increase the flow area of ​​the airflow, and thus enhance the airflow guiding ability of the air guide member.

[0068] The intersection area 135 of the trailing edge 132 of the fan blade and the outer edge 133 of the fan blade, which is prone to form unstable airflow, is arranged in the middle section 124 of the guide channel 121. This can prevent the unstable airflow from diffusing to the outside of the guide channel 121. All unstable airflows are confined within the guide channel 121, which can minimize the possibility of forming greater noise within the shell 110.

[0069] Figure 3 The schematic diagram of the position relationship between the guide member and the wind wheel of the air conditioner outdoor unit according to one embodiment of the utility model is combined with Figure 3 , it can be seen more clearly that the relative position relationship between the guide member 120 and the wind wheel 130 can be specifically arranged according to the geometric dimensions and power parameters of the air-conditioning outdoor unit 100.

[0070] The wind wheel 130 may be entirely disposed in the flow guide channel 121 of the flow guide member 120 , or a partial area of ​​the wind wheel 130 may be disposed in the flow guide channel 121 of the flow guide member 120 .

[0071] Among them, at least the intersection area 135 between the blade outer edge 133 and the blade trailing edge 132 of each blade 131 of the wind wheel 130 should be arranged in the guide channel 121 of the guide member 120.

[0072] Continue to combine Figure 6 In one embodiment of the utility model, the guide channel 121 of the guide member 120 of the air-conditioning outdoor unit 100 is provided with a first noise reduction structure 140 at the outlet section 123, and the first noise reduction structure 140 includes a cut portion 141 formed on the inner wall of the outlet section 123.

[0073] The first noise reduction structure 140 may also be configured to have a plurality of cut-out portions 141, wherein the plurality of cut-out portions 141 are spaced apart on the inner wall of the outlet section 123 along the rotation direction of the wind wheel 130;

[0074] In another embodiment of the utility model, the inlet section 122 of the guide channel 121 of the guide member 120 of the air conditioner outdoor unit 100 is provided with a second noise reduction structure 150 , and the second noise reduction structure 150 includes a protrusion 151 formed on the inner wall of the inlet section 122 .

[0075] The second noise reduction structure 150 may be configured to have a plurality of protrusions 151 , and the plurality of protrusions 151 are arranged on the inner wall of the inlet section 122 at intervals along the rotation direction of the wind wheel 130 .

[0076] In some embodiments of the present application, the outlet section 123 is provided with a first noise reduction structure 140, and the first noise reduction structure 140 is connected to the middle section 124. The first noise reduction structure 140 is set in the outlet section 123 of the guide member 120. When the wind wheel 130 rotates, the regular interference frequency between the driven airflow and the surrounding objects is improved, the frequency of the low-frequency noise accumulated by the rotation of the wind wheel 130 is increased, and the rotation noise spike in the same frequency band is reduced, thereby reducing the low-frequency noise during use, so that the user experience can be effectively improved.

[0077] In other embodiments of the utility model, the first noise reduction structure 140 can be a raised portion 151 arranged on the inner wall surface of the outlet section 123, or a cut-out portion 141, or a combination of the raised portion 151 and the cut-out portion 141. The cut-out portion 141 arranged on the inner wall surface of the outlet section 123 has a plane smoothly connected to the inner wall surface, and the connection between the plane and the inner wall surface can be straight, arc-shaped, or curved. When the airflow flows from the inner wall surface of the outlet section 123 to the cut-out portion 141, the distance in the direction perpendicular to the rotation axis 134 of the wind wheel 130 changes, that is, the radial distance changes, resulting in increased interference to the airflow, and the rotation noise peak in the same frequency band is reduced, thereby reducing the airflow noise; when a plurality of cut-out portions 141 are arranged on the inner wall surface of the outlet section 123, or when they are evenly arranged along the axial direction of the guide member 120, the airflow can be periodically interfered at the inner wall surface of the outlet section 123, and the noise peak in the airflow is reduced more significantly.

[0078] The raised portion 151 arranged on the inner wall surface of the outlet section 123 has an arc-shaped wall surface and is smoothly connected to the inner wall surface of the outlet section 123. Since the raised portion 151 is arranged on the inner wall of the outlet section 123, when the airflow flows from the inner wall surface of the outlet section 123 to the arc-shaped wall surface of the raised portion 151, the distance in the direction perpendicular to the axial direction of the guide member 120 changes, that is, the radial distance occurs, so that the flow of the airflow is interfered, and the rotational noise peak in the same frequency band is reduced, thereby reducing the airflow noise.

[0079] Among them, a second noise reduction structure 150 can be set at the inlet section 122 of the guide member 120, and the second noise reduction structure 150 is connected to the middle section 124 of the guide member 120. The second noise reduction structure 150 can be a cut portion 141, or a raised portion 151, or a combination of the cut portion 141 and the raised portion 151. The technical effect is similar to that of the first noise reduction structure 140 at the outlet end. The airflow is subject to regular interference. When multiple cut portions 141 or raised portions 151 are set, the interference frequency of the airflow is increased, the frequency of the low-frequency noise accumulated by the rotation of the wind wheel 130 is increased, and the rotation noise spike in the same frequency band is reduced, thereby reducing the low-frequency noise during use.

[0080] The guide member 120 in the air-conditioning outdoor unit of the utility model reduces the possibility of the airflow generating greater noise during the rotation of the wind wheel 130 by arranging a first noise reduction structure 140 and a second noise reduction structure 150 on the inner wall of the guide channel 121. In combination with the part of the fan blades 131 of the wind wheel 130 that is prone to form unstable airflow being arranged in the guide channel 121, the noise of the air-conditioning outdoor unit 100 during operation can be reduced to the greatest extent.

[0081] The utility model also provides an air conditioner, the air conditioner comprises the air conditioner outdoor unit as described in any one of the above items, and the air conditioner further comprises a heat exchanger and a compressor assembly, wherein the heat exchanger can be a microchannel heat exchanger.

[0082] A refrigerant medium is arranged in the heat exchanger, and the heat exchanger is connected to a compressor assembly, and the compressor assembly performs work on the refrigerant medium.

[0083] When the heat exchanger is disposed in the housing of the air conditioner outdoor unit, the airflow formed in the air conditioner indoor unit exchanges heat with the heat exchanger.

[0084] The above is only a preferred specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the utility model should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. An air conditioner outdoor unit, characterized in that: The air conditioner outdoor unit comprises: A shell, the shell having an air inlet and an air outlet, the air outlet is arranged at the top of the shell, the air inlet is arranged at the side of the shell, and the distance between the top wall and the bottom wall of the shell is H; A fan, the fan is used to drive air flow into the housing through the air inlet and be discharged through the air outlet; The guide member is arranged in the shell, the guide member has a guide channel, the air outlet side of the guide channel is arranged opposite to the air outlet, and the extension distance of the guide member in the shell is L, 0.025<L / H<0.

4.

2. The air conditioner outdoor unit according to claim 1, characterized in that: The fan comprises a wind wheel, which is arranged in the housing and at least partially arranged in the flow guide.

3. The air conditioner outdoor unit according to claim 2, characterized in that: The wind wheel is provided with at least one blade, the blade having a blade trailing edge and a blade outer edge, the blade outer edge is located on a side of the blade away from the rotation axis of the wind wheel, and the direction of the blade trailing edge is opposite to the rotation direction of the wind wheel, Wherein, the intersection area between the trailing edge of the fan blade and the outer edge of the fan blade is arranged in the guide member.

4. The air conditioner outdoor unit according to claim 3, characterized in that: The flow guide channel comprises an inlet section, a middle section and an outlet section which are connected in sequence. The inner diameter of the inlet section gradually decreases along the direction from the inlet section to the outlet section. Wherein, the intersection area of ​​the trailing edge of the fan blade and the outer edge of the fan blade is arranged in the inlet section, or the intersection area of ​​the trailing edge of the fan blade and the outer edge of the fan blade is arranged in the middle section.

5. The air conditioner outdoor unit according to any one of claims 1 to 4, characterized in that: The guide channel is extended from the top wall to the bottom wall, and the value range of L / H is greater than or equal to 0.05 and less than or equal to 0.

25.

6. The air conditioner outdoor unit according to claim 4, characterized in that: The air inlet is arranged on the side of the shell and is located below the guide member.

7. The air conditioner outdoor unit according to claim 4, characterized in that: The outlet section is provided with a first noise reduction structure, and the first noise reduction structure includes a cut-away portion formed on an inner wall of the outlet section.

8. The air conditioner outdoor unit according to claim 7, characterized in that: The inlet section is provided with a second noise reduction structure, and the second noise reduction structure includes a protrusion formed on the inner wall of the inlet section.

9. The air conditioner outdoor unit according to claim 8, characterized in that: The first noise reduction structure comprises a plurality of the cut-out portions, and the plurality of the cut-out portions are arranged at intervals along the circumference of the outlet section; and / or The second noise reduction structure includes a plurality of protrusions, and the plurality of protrusions are arranged at intervals along the circumferential direction of the inlet section.

10. An air conditioner, characterized in that: The air conditioner comprises the air conditioner outdoor unit according to any one of claims 1 to 9.

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