Air outlet assembly and air conditioner

Abstract

The invention provides an air outlet assembly and an air conditioner, and relates to the technical field of air conditioners. The air outlet assembly comprises a cross-flow fan blade and a volute tongue. The cross-flow fan blade comprises a plurality of fan blade bodies which are spliced along the axis. The volute tongue and the cross-flow fan blade are arranged at an interval; a plurality of first flow guide parts and a plurality of second flow guide parts are arranged on the volute tongue; the first flow guide part is a part, corresponding to the middle part of the fan blade body, of the volute tongue, and the second flow guide part is a part, corresponding to the end part of the fan blade body, of the volute tongue; the length of the first flow guide part in the circumferential direction of the fan blade body is smaller than that of the second flow guide part in the circumferential direction of the fan blade body. The air conditioner provided by the invention adopts the air outlet assembly. According to the air outlet assembly and the air conditioner, the technical problems that in the prior art, airflow is unstable, and noise is likely to occur can be solved.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioning, and in particular to an air outlet component and an air conditioner. Background Art

[0002] In recent years, in order to improve the energy efficiency of wall-mounted air conditioner indoor units, the outer diameter of the impeller and the air duct of the heat exchanger and crossflow fan have been continuously expanded. In addition, for the consideration of air purification and internal cleaning, it has gradually become a trend to equip the indoor unit with high-performance filters and cleaning mechanisms. However, these structures installed in the indoor unit of the wall-mounted air conditioner will increase the load resistance of the crossflow fan. Even if the outer diameter of the crossflow fan is enlarged and the fan speed is reduced, the fan air supply noise is still more and more significant.

[0003] In a conventional wall-mounted air conditioner indoor unit, a heat exchanger is installed in the upstream air inlet duct of the indoor unit, and a crossflow blade is installed in the downstream air duct. The back of the crossflow blade is equipped with a volute, the front is equipped with a volute tongue, and the downstream air outlet side is equipped with a horizontal air guide plate and left and right air guide plates for controlling the wind direction. When the back plate and the volute tongue are installed, a certain gap must be maintained with the outer diameter of the crossflow blade in the axial direction of the crossflow blade, and part of the volute tongue has a minimum gap S with the outer periphery of the crossflow blade.

[0004] The inventors have found that crossflow blades usually adopt a split splicing structure, which is composed of multiple blade bodies. With the expansion of the outer diameter of the crossflow blade, even if the blade speed is reduced, near the splicing of the blade body, due to structural changes and the weakening of the blade's guiding effect, it is easier for the airflow to flow back from the wind outlet side of the blade to the wind inlet side through the gap between the volute tongue and the crossflow blade, resulting in local instability of the circulating vortex generated in the crossflow blade, which in turn leads to instability of the airflow through the crossflow blade, resulting in airflow fluctuations and air supply noise. Summary of the invention

[0005] The problem solved by the present invention is how to improve the technical problem of unstable airflow and easy occurrence of noise in the prior art.

[0006] In order to solve the above problems, the present invention provides an air outlet component, which is applied to an air conditioner. The air outlet component includes:

[0007] The crossflow fan blade comprises a plurality of fan blade bodies spliced ​​along an axis;

[0008] A volute tongue is arranged at an interval with the through-flow fan blade; the volute tongue has multiple first guide parts and multiple second guide parts; the first guide part is the part of the volute tongue corresponding to the middle part of the fan blade body and forming the smallest gap, and the second guide part is the part of the volute tongue corresponding to the end part of the fan blade body and forming the smallest gap; the length of the first guide part along the circumference of the fan blade body is less than the length of the second guide part along the circumference of the fan blade body.

[0009] The beneficial effects of the air outlet assembly provided by the present invention compared with the prior art include:

[0010] In the air outlet assembly, even if the air outlet airflow of the fan blade body deviates sharply toward the volute tongue near the end of the fan blade body, since the length of the first guide part in the circumferential direction of the fan blade body is less than the length of the second guide part in the circumferential direction, the length of the air duct corresponding to the second guide part is extended, resulting in an increase in the resistance of the fluid flowing in the air duct. Therefore, a part of the air outlet airflow cannot pass through the gap between the end position of the fan blade body and the second guide part, and instead deviates to the air outlet air duct formed by the volute tongue. Based on this, the airflow corresponding to the end position of the fan blade body can be made more stable, and the instability of the circulation vortex can be effectively suppressed; thereby effectively suppressing the instability of the airflow caused by the instability of the circulation vortex, thereby effectively improving the problem of causing noise. Based on this, the technical problem of unstable airflow and easy noise in the prior art can be improved.

[0011] Optionally, the fan blade body includes an end plate and a plurality of fan blades, the plurality of fan blades are connected to one side of the end plate to form a ring-shaped distributed fan blade group; the other side of the end plate is used to connect the fan blade group in another adjacent fan blade body; the middle part of the fan blade group corresponds to the first guide portion, and the end of the fan blade group and the end plate both correspond to the second guide portion.

[0012] Among them, since the setting of the end plate in the cross-flow fan blade is easy to cause unstable airflow in the air duct at its corresponding position, based on this, the second guide part is corresponding to the end plate and the end of the fan blade group close to the end plate. This can effectively improve the problem of unstable airflow caused by the instability of the circulating vortex at the corresponding position of the end plate and the end of the fan blade group, thereby effectively suppressing the generation of noise.

[0013] Optionally, the air outlet assembly also includes a volute backplate, an air outlet channel is formed between the volute tongue and the volute backplate, and the cross-flow fan blade is arranged in the air outlet channel; the air outlet channel has an air outlet, the first guide portion and the second guide portion are flush at one end close to the air outlet, and the second guide portion is raised relative to the first guide portion at an end away from the air outlet.

[0014] Since the length of the first guide part in the circumferential direction of the blade body is smaller than the length of the second guide part in the circumferential direction of the blade body, the overall structure of the volute tongue is uneven. By setting the second guide part and the first guide part to be flush near the end of the air outlet, it is possible to avoid affecting the air outlet.

[0015] Optionally, one end of the second air guide portion away from the air outlet is raised in an arc shape.

[0016] The end of the second air guide portion away from the air outlet is convex in an arc shape, so that the outer contour of the second air guide portion can be smoothly connected with the outer contour of the first air guide portion, which can reduce the difficulty of demolding and facilitate production.

[0017] Optionally, a length of the second air guide portion in the circumferential direction of the blade body gradually decreases along the axial direction of the blade body toward the first air guide portion.

[0018] Since the airflow closer to the end of the blade body is more easily affected, that is, the farther away from the end of the blade body, the less the corresponding airflow is affected, based on this, setting the length of the second guide portion in the circumferential direction of the blade body to change gradually can avoid excessive impact on the airflow farther from the end of the blade body, which is conducive to ensuring uniform and stable air output.

[0019] Optionally, the axial length of the blade body is L0, the axial length of the first air guide portion is L1, and the axial length of the second air guide portion is L2;

[0020] Among them, L1 is greater than or equal to 0.7 times L0; L2 is less than or equal to 0.15 times L0.

[0021] In the axial direction of the fan blade body, the length of the first guide portion is greater than that of the second guide portion. This can ensure that the first guide portion corresponding to the middle position of the fan blade body has sufficient length to ensure the stability of the airflow in the air duct corresponding to the middle position of the fan blade body. In addition, it can also prevent the pressure changes in the fan blades from causing noise due to the increase in the number of parts of the fan blades close to the fan blade body.

[0022] Optionally, the first flow guide portion corresponding to the blade body at the end of the crossflow blade has a length L3 in the axial direction of the blade body, and the corresponding second flow guide portion has a length L4 in the circumferential direction of the blade body;

[0023] Among them, L3 is smaller than L1, and L4 is larger than L2.

[0024] Under low-wind and silent conditions with less wind volume, the airflow flowing into the fan blade bodies at both ends of the crossflow fan blade can also be stabilized to suppress the fluctuation of the circulation vortex, thereby achieving the purpose of stabilizing the airflow and improving noise.

[0025] Optionally, the distance between the first air guide portion and the blade body is equal to the distance between the second air guide portion and the blade body.

[0026] Optionally, a distance between the first air guide portion and the fan blade body is S, an outer diameter of the fan blade body is D, and a value range of S is 0.033D to 0.06D.

[0027] An air conditioner comprises the above-mentioned air outlet assembly.

[0028] The air conditioner provided by the present invention adopts the above-mentioned air outlet assembly. Therefore, the beneficial effects of the air conditioner relative to the prior art are the same as the beneficial effects of the above-mentioned air outlet assembly relative to the prior art, which will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a structural schematic diagram of an air conditioner in the prior art;

[0030] Figure 2 It is a schematic diagram of the structure of a crossflow fan blade in the prior art;

[0031] Figure 3 for Figure 2 Schematic diagram of airflow at the UU section;

[0032] Figure 4 for Figure 2 Another airflow diagram at the middle UU section;

[0033] Figure 5 for Figure 2 Schematic diagram of airflow at the VV section;

[0034] Figure 6 for Figure 2 Another airflow diagram at the VV section;

[0035] Figure 7 This is a schematic diagram of the structure of the air outlet assembly provided in the first embodiment of the present application;

[0036] Figure 8 A schematic structural diagram of the air outlet assembly provided in the first embodiment of the present application from another perspective;

[0037] Fig. 9 for Figure 8 Schematic diagram of the cross section at AA in the middle;

[0038] Fig.10 for Figure 8 Schematic diagram of the cross section at BB;

[0039] Fig.11 for Figure 7 A schematic diagram of a local structure of the structure shown in;

[0040] Fig.12 for Figure 7 Another partial structural schematic diagram of the structure shown in .

[0041] Description of reference numerals:

[0042] 100-air outlet assembly; 110-crossflow fan blade; 111-disc-shaped end plate; 130-volute back plate; 150-volute tongue; 153-first air guide portion; 151-second air guide portion; 170-fan blade body; 171-annular end plate; 173-fan blade; 175-fan blade group; 190-air outlet channel. DETAILED DESCRIPTION

[0043] In the prior art, please refer to Figures 1 to 6 In the existing indoor unit of the air conditioner, a heat exchanger is installed in the upstream air inlet duct of the indoor unit, and a crossflow fan blade is installed in the downstream air duct. The back of the crossflow fan blade is equipped with a volute back plate, the front is equipped with a volute tongue, the downstream air outlet side is equipped with a horizontal air guide plate and left and right air guide plates for controlling the wind direction, and a panel is installed on the front of the heat exchanger. When the back plate and the volute tongue are installed, a certain gap must be maintained with the outer diameter of the crossflow fan blade in the axial direction of the crossflow fan blade, and the minimum gap is formed between the part of the volute tongue and the crossflow fan blade.

[0044] Among them, in order to improve the noise of the crossflow fan blades, especially the rotational noise caused by the pressure changes caused by the rotation of the blades, multiple blades are often staggered and arranged to form unequal intervals, so that they have a pressure change phase; at the same time, when connecting the fan body, it will deviate from the center of the flow fan blade by a certain angle.

[0045] However, in the existing air-conditioning indoor unit, if the load resistance (wind resistance) of the cross-flow blade increases, the fan operating point will shift to the low air volume side. If the size of the cross-flow blade is enlarged, the fan operating point will move further to the low air volume side, and the air outlet speed in the radial direction equivalent to the outlet air volume of the blades of the blade body will decrease.

[0046] in, Figure 2 The airflow formed at the UU section in Figure 3 and Figure 4 As shown, in the fan body, the airflow F1 flows out along the blade near the middle of the blade axial length, so the velocity vector C1 of the outflow fluid is the synthesis of the circumferential component C1u generated by the rotation of the crossflow fan blade and the radial component C1r generated by the air volume. The outlet airflow F1 and the circulation vortex A1 are formed on the outlet air duct formed by the volute tongue and the back plate.

[0047] in addition, Figure 2 The airflow formed at the VV section is as follows Figure 5 and Figure 6As shown, near the end plate of the fan blade body, the end plate itself will affect the flow of the fluid, and the friction resistance generated by the side of the end plate will further cause a portion of the air volume passing through the blades to decrease. The corresponding velocity vector C2 of the outlet airflow is synthesized by the circumferential component (velocity) C2u generated by the rotation of the impeller and the radial component C2r generated by the decreased air volume. At this time, the outlet airflow is sharply biased toward one side of the volute tongue at the outlet. Therefore, a portion of the airflow F2 passes through the gap between the front end R of the volute tongue and the fan blade body, and flows back (return air) to the air inlet side between the heat exchanger and the fan blade body. At this time, the fluid forms a jet when passing through the smallest gap of the volute tongue, and as shown in FIG. Figure 6 As shown, the fluid collides with the fluid passing through the heat exchanger and flows into the fan blade body, causing the circulation vortex A2 to become unstable.

[0048] In existing air conditioner indoor units, as the outer diameter of the crossflow blades increases, even if the blade speed is reduced, the circulating vortex generated in the impeller will still cause local instability, and the airflow through the impeller will be unstable, resulting in fluctuating and harsh air supply noise.

[0049] Based on this, the air outlet assembly 100 and the air conditioner of the present application are provided to solve the above technical problems; in other words, the air outlet assembly 100 and the air conditioner provided in the embodiment of the present application can improve the technical problems of unstable flow and easy noise in the prior art. In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0050] First embodiment

[0051] See also Figure 7 and Figure 8 , in this embodiment, an air outlet assembly 100 is provided, and the air outlet assembly 100 is applied to an air conditioner. Among them, the air outlet assembly 100 includes a crossflow fan blade 110, a volute back plate 130 and a volute tongue 150. An air outlet channel 190 is formed between the volute back plate 130 and the volute tongue 150, and the crossflow fan blade 110 is arranged in the air outlet channel 190; wherein, the volute back plate 130 is arranged on the back side of the crossflow fan blade 110, and the volute tongue 150 is arranged on the front side of the crossflow fan blade 110; and the volute back plate 130 and the volute tongue 150 are both spaced apart from the crossflow fan blade 110. The crossflow fan blade 110 includes a plurality of fan blade bodies 170 spliced ​​along the axis. The volute tongue 150 is spaced apart from the crossflow fan blade 110; please refer to Fig. 9 and Fig.10The volute tongue 150 has a plurality of first guide portions 153 and a plurality of second guide portions 151; the first guide portion 153 is a portion of the volute tongue 150 corresponding to the middle portion of the blade body 170 and forming the smallest gap, and the second guide portion 151 is a portion of the volute tongue 150 corresponding to the end portion of the blade body 170 and forming the smallest gap; the length of the first guide portion 153 along the circumferential direction of the blade body 170 is less than the length of the second guide portion 151 along the circumferential direction of the blade body 170.

[0052] It is worth noting that the circumferential direction of the blade body 170 refers to the circumferential direction formed along the outer circumference of the blade body 170 , and the axial direction refers to the direction colinear with the rotation center axis of the blade body 170 .

[0053] Among them, Figure 7 In the case of an example, the upper part of the air outlet assembly 100 is the air inlet side, and the lower part of the air outlet assembly 100 is the air outlet side, wherein an air outlet is provided below the air outlet channel 190. The air outlet can guide the airflow to a designated area, thereby achieving air conditioning of the designated area. During the operation of the crossflow fan blade 110, the airflow is introduced from the air inlet side into the air outlet channel 190, and then guided out from the air outlet; at the same time, when the airflow flows to the volute tongue 150, part of the airflow will return to the gap between the volute tongue 150 and the crossflow fan blade 110 to form a circulating vortex.

[0054] As described above, in the air outlet assembly 100, even if the air outlet airflow of the blade body 170 deviates sharply toward the volute tongue 150 near the end of the blade body 170, since the length of the first guide portion 153 in the circumferential direction of the blade body 170 is less than the length of the second guide portion 151 in the circumferential direction, the length of the air duct corresponding to the position of the second guide portion 151 is extended, resulting in an increase in the resistance of the fluid flowing in the air duct. Therefore, a part of the air outlet airflow cannot pass through the gap between the end position of the blade body 170 and the second guide portion 151, and instead deviates to the air outlet air duct formed by the volute tongue 150. Based on this, the airflow corresponding to the end position of the blade body 170 can be made more stable, and the instability of the circulation vortex can be effectively suppressed; thereby effectively suppressing the instability of the airflow caused by the instability of the circulation vortex, thereby effectively improving the problem of causing noise. Based on this, the technical problem of unstable airflow and easy noise in the prior art can be improved.

[0055] It should be noted that in Fig. 9 In the figure, T1 represents the length of the first air guide portion 153 in the circumferential direction of the wind blade body 170; correspondingly, Fig.10 , T2 represents the length of the second air guide portion 151 in the circumferential direction of the blade body 170 .

[0056] In this embodiment, the fan blade body 170 includes an end plate and a plurality of fan blades 173, wherein the plurality of fan blades 173 are connected to one side of the end plate and form a ring-shaped fan blade group 175; the other side of the end plate is used to connect the fan blade group 175 in another adjacent fan blade body 170; the middle of the fan blade group 175 corresponds to the first air guide 153, and the end of the fan blade group 175 and the end plate correspond to the second air guide 151. Among them, since the setting of the end plate in the cross-flow fan blade 110 easily leads to unstable airflow in the air duct at the corresponding position thereof, based on this, the end plate and the end of the fan blade group 175 near the end plate correspond to the second air guide 151, which can effectively improve the problem of unstable airflow caused by the instability of the circulating vortex at the corresponding position of the end plate and the end of the fan blade group 175, thereby effectively suppressing the generation of noise.

[0057] It is worth noting that the middle part of the fan blade group 175 refers to the area in the fan blade group 175 corresponding to the middle position of the fan blade 173; correspondingly, the end of the fan blade group 175 refers to the position of the end of the fan blade group 173 corresponding to the fan blade 173, which can also be regarded as the position of the fan blade 173 close to the end plate.

[0058] The cross-flow blade 110 is formed by splicing a plurality of blade bodies 170, and the plurality of blade bodies 170 are spliced ​​and arranged along the axial direction thereof. The plurality of blade bodies 170 located in the middle can be regarded as being composed of two annular end plates 171 and a plurality of blade groups 175 arranged between the two annular end plates 171, while two adjacent blade bodies 170 share an annular end plate 171. However, the blade bodies 170 located at the two ends are composed of an annular end plate 171, a disc-shaped end plate 111 and a plurality of blade groups 175; the disc-shaped end plates 111 are located at the two ends of the cross-flow blade 110 as a whole. In other words, the end plates can be divided into an annular end plate 171 and a disc-shaped end plate 111, and the disc-shaped end plates 111 are arranged at the two ends of the cross-flow blade 110.

[0059] In this embodiment, any one of the blade bodies 170 corresponds to one first air guide portion 153 and two second air guide portions 151, and the two second air guide portions 151 are respectively located on both sides of the first air guide portion 153 along the axial direction of the blade body 170. Based on this, in the second air guide portions 151 corresponding to two adjacent blade bodies 170, the two second air guide portions 151 are connected and can be regarded as forming a whole.

[0060] Furthermore, in this embodiment, the first guide portion 153 and the second guide portion 151 are flush at one end close to the air outlet, and the second guide portion 151 is protruding relative to the first guide portion 153 at one end away from the air outlet. Since the length of the first guide portion 153 in the circumferential direction of the blade body 170 is less than the length of the second guide portion 151 in the circumferential direction of the blade body 170, the volute tongue 150 as a whole presents an uneven structure, and the second guide portion 151 and the first guide portion 153 are set to be flush at one end close to the air outlet, which can avoid affecting the air outlet.

[0061] Among them, in 9 and Fig.10 In the case of an example, it can be seen that the end of the volute tongue 150 close to the air inlet side also has a tip portion, and the distance between the tip portion and the crossflow fan blade 110 is greater than the distance between the first guide portion 153 and the crossflow fan blade 110. The length of the portion of the tip portion corresponding to the first guide portion 153 along the circumferential direction of the crossflow fan blade 110 is greater than the length of the tip portion corresponding to the second guide portion 151 along the circumferential direction of the crossflow fan blade 110, thereby making the tip portion of the volute tongue 150 away from the first guide portion 153 and the second guide portion 151 in a flush state.

[0062] Optionally, the second air guide 151 has an arc-shaped protrusion at one end away from the air outlet, which can make the outer contour of the second air guide 151 smoothly dock with the outer contour of the first air guide 153, reduce the difficulty of demoulding, and facilitate production.

[0063] In addition, in this embodiment, the length of the second air guide portion 151 in the circumferential direction of the blade body 170 gradually decreases toward the first air guide portion 153 along the axial direction of the blade body 170. Since the airflow closer to the end of the blade body 170 is more easily affected, that is, the farther away from the end of the blade body 170, the less the corresponding airflow is affected, based on this, setting the length of the second air guide portion 151 in the circumferential direction of the blade body 170 to gradually change can avoid excessive influence on the airflow farther from the end of the blade body 170, which is conducive to ensuring uniform and stable air output.

[0064] In this embodiment, please refer to Fig.11 and Fig.12, the axial length of the blade body 170 is L0, the axial length of the first air guide portion 153 is L1, and the axial length of the second air guide portion 151 is L2. Among them, L1 is greater than or equal to 0.7 times of L0; L2 is less than or equal to 0.15 times of L0. In the axial direction of the blade body 170, the length of the first air guide portion 153 is greater than the length of the second air guide portion 151, which can ensure that the first air guide portion 153 corresponding to the middle position of the blade body 170 has a sufficient length, ensure the stability of the airflow in the air duct corresponding to the middle position of the blade body 170, and in addition, it can also suppress the increase of components of the blade 173 close to the blade body 170, which causes the pressure change of the blade 173 to generate noise. By reasonably limiting the distribution range of the first air guide portion 153 , the blade pressure variation caused by the volute tongue 150 being too close to the blade of the blade body 170 can be improved as much as possible, thereby suppressing the rotation noise caused by the pressure variation.

[0065] It is worth mentioning that the above-mentioned L1 and L2 refer to the axial length dimensions of the first guide portion 153 and the second guide portion 151 corresponding to the multiple wind blade bodies 170 located in the middle; in other words, the wind blade body 170 corresponding to L1 and L2 is a wind blade body 170 formed by two annular end plates 171.

[0066] Furthermore, the length of the first guide portion 153 corresponding to the blade body 170 at the end of the crossflow blade 110 in the axial direction of the blade body 170 is L3, and the length of the corresponding second guide portion 151 in the circumferential direction of the blade body 170 is L4; in other words, the blade body 170 formed by the disc-shaped end plate 111 and the annular end plate 171, wherein L3 is smaller than L1, and L4 is larger than L2.

[0067] Specifically, the length of the first guide portion 153 corresponding to the blade body 170 formed by the disc-shaped end plate 111 and the annular end plate 171 in the axial direction of the blade body 170 is smaller than the length of the first guide portion 153 corresponding to the blade body 170 formed by the two annular end plates 171 in the axial direction of the blade body 170; in addition, the length of the second guide portion 151 corresponding to the blade body 170 formed by the disc-shaped end plate 111 and the annular end plate 171 in the axial direction of the blade body 170 is larger than the length of the second guide portion 151 corresponding to the blade body 170 formed by the two annular end plates 171 in the axial direction of the blade body 170.

[0068] Based on this, under low-wind and silent conditions with less wind volume, the airflow flowing into the fan blade body 170 at both ends of the crossflow fan blade 110 can also be stabilized to suppress the fluctuation of the circulation vortex, thereby achieving the purpose of stabilizing the airflow and improving noise.

[0069] It should be understood that in the embodiments of the present application, the lengths of the first guide portion 153 and the second guide portion 151 corresponding to the blade body 170 located at both ends of the cross-flow blade 110 in the axial direction of the blade body 170 are respectively set to L3 and L4; in other embodiments, only the length of the first guide portion 153 and the second guide portion 151 of the blade body 170 at one end in the axial direction of the blade body 170 may be set to L3 and L4, and the lengths of the first guide portion 153 and the second guide portion 151 corresponding to the blade body 170 at the other end in the axial direction of the blade body 170 may also be set to L1 and L2.

[0070] In this embodiment, the distance between the first air guide 153 and the blade body 170 is equal to the distance between the second air guide 151 and the blade body 170. The distance between the first air guide 153 and the blade body 170 is S, the outer diameter of the blade body 170 is D, and the value range of S is 0.033D to 0.06D. Therefore, by reasonably limiting the gap width S, the middle and end parts of the blade group 175 can be arranged within a reasonable gap range, thereby reducing the rotation noise caused by pressure changes and reducing the air supply noise.

[0071] In summary, in the air outlet assembly 100 provided in the present embodiment, even if the air outlet airflow of the blade body 170 deviates sharply toward the volute tongue 150 near the end of the blade body 170, since the length of the first guide portion 153 in the circumferential direction of the blade body 170 is less than the length of the second guide portion 151 in the circumferential direction, the length of the air duct corresponding to the position of the second guide portion 151 is extended, resulting in an increase in the resistance of the fluid flowing in the air duct. Therefore, a part of the air outlet airflow cannot pass through the gap between the end position of the blade body 170 and the second guide portion 151, and instead deviates to the air outlet air duct formed by the volute tongue 150. Based on this, the airflow corresponding to the end position of the blade body 170 can be made more stable, and the instability of the circulating vortex can be effectively suppressed; thereby, the instability of the airflow caused by the instability of the circulating vortex is effectively suppressed, thereby effectively improving the problem of causing noise. Based on this, the technical problem of unstable airflow and easy noise in the prior art can be improved. And by reasonably limiting the size range of the first guide portion 153 and the second guide portion 151 in the axial direction of the fan body 170, the blade pressure change caused by the volute tongue 150 being too close to the blade body 170 can be improved as much as possible, thereby suppressing the rotation noise caused by the pressure change.

[0072] Second embodiment

[0073] This embodiment provides an air conditioner, which uses the air outlet assembly 100 provided in the first embodiment. Based on this, the air conditioner can also improve the technical problems of unstable airflow and easy noise in the prior art.

[0074] It is worth noting that the air conditioner can be a wall-mounted air conditioner indoor unit. The basic structure of the wall-mounted air conditioner indoor unit can refer to the relevant description in the prior art and will not be repeated here.

[0075] Although the present invention is disclosed as above, the present invention is not limited thereto. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the scope defined by the claims.

Claims

1. An air outlet component, used in an air conditioner, It is characterized in that The air outlet component comprises: The crossflow fan blade comprises a plurality of fan blade bodies spliced ​​along an axis; A volute tongue is arranged at an interval with the through-flow fan blade; the volute tongue has multiple first guide parts and multiple second guide parts; the first guide part is the part of the volute tongue corresponding to the middle part of the fan blade body and forming the smallest gap, and the second guide part is the part of the volute tongue corresponding to the end part of the fan blade body and forming the smallest gap; the length of the first guide part along the circumference of the fan blade body is less than the length of the second guide part along the circumference of the fan blade body.

2. The air outlet assembly according to claim 1, It is characterized in that The fan blade body includes an end plate and a plurality of fan blades, wherein the plurality of fan blades are connected to one side of the end plate to form a ring-shaped fan blade group; the other side of the end plate is used to connect the fan blade group in another adjacent fan blade body; the middle part of the fan blade group corresponds to the first guide portion, and the end of the fan blade group and the end plate both correspond to the second guide portion.

3. The air outlet assembly according to claim 1, It is characterized in that The air outlet assembly also includes a volute back plate, an air outlet channel is formed between the volute tongue and the volute back plate, and the cross-flow fan blade is arranged in the air outlet channel; the air outlet channel has an air outlet, the first guide portion and the second guide portion are flush at one end close to the air outlet, and the second guide portion is raised relative to the first guide portion at an end away from the air outlet.

4. The air outlet assembly according to claim 3, It is characterized in that One end of the second air guide portion away from the air outlet is convex and arc-shaped.

5. The air outlet assembly according to claim 1, It is characterized in that A length of the second air guide portion in the circumferential direction of the blade body gradually decreases along the axial direction of the blade body toward the first air guide portion.

6. The air outlet assembly according to claim 1, It is characterized in that The length of the blade body in the axial direction is L0, the length of the first air guide portion in the axial direction of the blade body is L1, and the length of the second air guide portion in the axial direction of the blade body is L2; Among them, L1 is greater than or equal to 0.7 times L0; L2 is less than or equal to 0.15 times L0.

7. The air outlet assembly according to claim 6, It is characterized in that The length of the first guide portion corresponding to the blade body at the end of the crossflow blade in the axial direction of the blade body is L3, and the length of the corresponding second guide portion in the circumferential direction of the blade body is L4; Among them, L3 is smaller than L1, and L4 is larger than L2.

8. The air outlet assembly according to claim 1, It is characterized in that The distance between the first air guide portion and the blade body is equal to the distance between the second air guide portion and the blade body.

9. The air outlet assembly according to claim 1, It is characterized in that The distance between the first air guide portion and the fan blade body is S, the outer diameter of the fan blade body is D, and the value range of S is 0.033D to 0.06D.

10. An air conditioner, It is characterized in that It comprises an air outlet assembly as described in any one of claims 1 to 9.

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