Centrifugal wind wheel, air conditioner indoor unit and air conditioner

Abstract

The invention discloses a centrifugal wind wheel, an air conditioner indoor unit and an air conditioner. The multiple blades and the multiple vortex eliminating pieces are arranged on the support and alternately arranged in the circumferential direction of a circle, and compared with the blade root positions of the blades, the vortex eliminating pieces are closer to the blade top positions of the blades; a flow channel is defined between the adjacent blades and the vortex eliminating piece, and the width of at least one part of the flow channel is kept consistent or gradually increased in the direction close to the rotating center of the support. According to the centrifugal wind wheel provided by the embodiment of the invention, the vortex eliminating part is arranged, and the flow channel is defined between the vortex eliminating part and the blades, so that the phenomena of flow separation and backflow at the blade top positions of the blades can be reduced, the internal flow state of the centrifugal wind wheel is improved, and the working capacity of the blades is improved, thereby improving the working efficiency of the centrifugal wind wheel.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioning, and in particular to a centrifugal fan wheel, an air conditioning indoor unit and an air conditioner. Background Art

[0002] The indoor unit of the window air conditioner in the related art uses a centrifugal fan to drive air to form an airflow. However, due to the low working efficiency of the centrifugal fan and the limited internal space of the indoor unit, the working efficiency of the centrifugal fan is further reduced, resulting in low energy efficiency of the entire window air conditioner and poor user experience. Summary of the invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, one object of the present invention is to provide a centrifugal fan wheel, which has a high working efficiency and is conducive to reducing the energy consumption of the air conditioner.

[0004] The invention also provides an air-conditioner indoor unit.

[0005] The invention also provides an air conditioner.

[0006] According to the first aspect of the present invention, the centrifugal impeller comprises: a bracket; a plurality of blades and a plurality of vortex eliminaters, wherein the plurality of blades and the plurality of vortex eliminaters are arranged on the bracket and alternately in the circumferential direction of a circle, and the vortex eliminaters are closer to the tip of the blade than the root of the blade; wherein a flow channel is defined between the adjacent blades and the vortex eliminaters, and the width of at least a portion of the flow channel remains consistent or gradually increases in the direction approaching the rotation center of the bracket.

[0007] According to the centrifugal wind wheel of the embodiment of the present invention, by arranging a vortex elimination part between two adjacent blades and utilizing the above-mentioned flow channel defined between the vortex elimination part and the blades, the flow separation and backflow phenomenon at the blade tip position can be reduced, the internal flow state of the centrifugal wind wheel can be improved, and the working capacity of the blades can be enhanced, thereby improving the working efficiency of the centrifugal wind wheel, which is beneficial to improving the working efficiency of the air conditioner and enhancing the user experience.

[0008] According to some embodiments of the present invention, the flow channel includes a first flow channel and a second flow channel, the first flow channel is defined between the pressure surface of the blade and the vortex eliminater, the second flow channel is defined between the suction surface of the blade and the vortex eliminater, and the width of at least a portion of each of the first flow channel and the second flow channel remains consistent or gradually increases in a direction approaching the rotation center.

[0009] In some embodiments, a width of the first flow channel is greater than a width of the second flow channel.

[0010] According to some embodiments of the present invention, the distance between one end of the vortex eliminater close to the rotation center and the suction surface of the blade is d1, and the distance between one end of the vortex eliminater close to the rotation center and the pressure surface of the blade is d2, and d2 is greater than or equal to 3 times of d1.

[0011] According to some embodiments of the present invention, the vortex eliminater has a first surface and a second surface arranged opposite to each other, the first surface forms a concave arc surface and is arranged opposite to the suction surface of the blade, and the second surface forms a convex arc surface and is arranged opposite to the pressure surface of the blade.

[0012] According to some embodiments of the present invention, the width of the vortex eliminating member gradually decreases in a direction approaching the rotation center.

[0013] According to some embodiments of the present invention, the distance between one end of the blade close to the rotation center and the rotation center is R1, the distance between one end of the vortex eliminating member close to the rotation center and the rotation center is R2, and R2 is greater than R1.

[0014] In some embodiments, the distance between one end of the blade away from the rotation center and the rotation center is R3, and R2 satisfies the condition: 0.2*(R3-R1)+R1≤R2≤0.5*(R3-R1)+R1.

[0015] According to some embodiments of the present invention, the height of the blade in the axial direction of the bracket is H1, and the height of the vortex eliminater in the axial direction of the bracket is H2, and H2 satisfies the condition: 0.25*H1≤H2≤0.5*H1.

[0016] According to a further embodiment of the present invention, the bracket includes: a wheel disc and a mounting ring, and the wheel disc and the mounting ring are arranged opposite to each other and spaced apart in the axial direction of the wheel disc; wherein, a plurality of the blades and a plurality of the vortex eliminaters are arranged on the side of the wheel disc facing the mounting ring, each of the blades is connected to the wheel disc and the mounting ring, and each of the vortex eliminaters is connected to the mounting ring and spaced apart from the wheel disc.

[0017] An air conditioner indoor unit according to an embodiment of the second aspect of the present invention comprises the centrifugal wind wheel according to the above embodiment.

[0018] According to some embodiments of the present invention, the air conditioner indoor unit also includes: a casing; a volute, which is arranged in the casing and defines a chamber for accommodating the centrifugal wind wheel, the inlet of the chamber is located at one axial end of the centrifugal wind wheel, and the outlet of the chamber is located on the circumferential side of the centrifugal wind wheel; a motor, which is arranged in the casing and connected to the centrifugal wind wheel to drive the centrifugal wind wheel to rotate; and an indoor heat exchanger, which is arranged opposite to the inlet of the chamber.

[0019] In some embodiments, the casing has an air inlet and an air outlet, the air outlet is located above the air inlet, the inlet is located on the side of the volute and corresponds to the position of the air inlet, and the outlet is located on the upper part of the volute and corresponds to the position of the air outlet.

[0020] An air conditioner according to an embodiment of a third aspect of the present invention comprises the air conditioner indoor unit according to the above embodiment.

[0021] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0023] Figure 1 is a schematic structural diagram of a centrifugal wind wheel according to an embodiment of the present invention;

[0024] Figure 2 is a front view of a centrifugal wind wheel according to an embodiment of the present invention;

[0025] Figure 3 is a side view of a centrifugal wind wheel according to an embodiment of the present invention;

[0026] Figure 4 1. is a wind volume-power curve diagram of a centrifugal wind wheel according to an embodiment of the present invention and three groups of comparative centrifugal wind wheels when they are working;

[0027] Figure 5 is a structural schematic diagram of an air-conditioning indoor unit according to an embodiment of the present invention;

[0028] Figure 6 is a structural cross-sectional view of an air conditioner indoor unit according to an embodiment of the present invention;

[0029] Figure 7 is an exploded view of an air conditioner indoor unit according to an embodiment of the present invention;

[0030] Figure 8 yes Figure 7 Schematic diagram of the structure of the volute, centrifugal fan wheel and indoor heat exchanger of the air conditioner indoor unit shown in.

[0031] Reference numerals:

[0032] Air conditioner indoor unit 1,

[0033] Centrifugal wind wheel 10, flow channel 101, first flow channel 1011, second flow channel 1012,

[0034] Blade 11, pressure surface 111, suction surface 112, first end 113,

[0035] The vortex eliminating member 12, the first surface 121, the second surface 122, the second end portion 123,

[0036] Bracket 13, rotation center 130, wheel 131, mounting ring 132,

[0037] Casing 20, air inlet 201, air outlet 202, housing 21, panel 22,

[0038] Volute 30, chamber 301, installation chamber 302, inlet 303, outlet 304, upper volute 31, lower volute 32,

[0039] Motor 40 , indoor heat exchanger 50 , filter 60 , air guide assembly 70 , air guide plate 71 . DETAILED DESCRIPTION

[0040] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0041] Reference below Figure 1-Figure 4 A centrifugal wind wheel 10 according to an embodiment of the present invention is described.

[0042] like Figure 1 and Figure 2 As shown, the centrifugal impeller 10 according to the embodiment of the present invention includes a bracket 13, a plurality of blades 11 and a plurality of vortex eliminating members 12. The plurality of blades 11 and the plurality of vortex eliminating members 12 are arranged on the bracket 13, and the plurality of blades 11 and the plurality of vortex eliminating members 12 are alternately arranged in the circumferential direction of a circle, and the vortex eliminating members 12 are closer to the tip of the blade 11 than to the root of the blade 11.

[0043] That is to say, multiple blades 11 are arranged at intervals in the circumferential direction of the above-mentioned circle, multiple vortex eliminaters 12 are arranged at intervals in the circumferential direction of the above-mentioned circle, one vortex eliminater 12 is provided between two adjacent blades 11, and one blade 11 is provided between two adjacent vortex eliminaters 12.

[0044] A flow channel 101 is defined between adjacent blades 11 and vortex eliminating elements 12 , and the width of at least a portion of the flow channel 101 remains consistent or gradually increases in a direction close to a rotation center 130 of the bracket 13 .

[0045] For example, the width of the flow channel 101 remains consistent along the direction of the rotation center 130 close to the bracket 13, so that the flow channel 101 forms a constant speed flow channel 101; for another example, the width of the flow channel 101 gradually increases along the direction of the rotation center 130 close to the bracket 13, so that the flow channel 101 forms an accelerating flow channel 101; for another example, the width of a part of the flow channel 101 remains consistent along the direction of the rotation center 130 close to the bracket 13 and the width of another part gradually increases along the direction of the rotation center 130 close to the bracket 13, so that at least a part of the flow channel 101 forms an accelerating flow channel 101.

[0046] According to the centrifugal wind wheel 10 of the embodiment of the present invention, by setting a vortex elimination member 12 between two adjacent blades 11, and utilizing the above-mentioned flow channel 101 defined between the vortex elimination member 12 and the blade 11, the flow separation and backflow phenomenon at the blade tip position of the blade 11 can be reduced, the internal flow state of the centrifugal wind wheel 10 can be improved, and the working capacity of the blade 11 can be enhanced, thereby improving the working efficiency of the centrifugal wind wheel 10, which is beneficial to improving the working efficiency of the air conditioner and enhancing the user experience.

[0047] like Figure 2 As shown, according to some embodiments of the present invention, the flow channel 101 includes a first flow channel 1011 and a second flow channel 1012 , the first flow channel 1011 is defined between the pressure surface 111 of the blade 11 and the vortex eliminater 12 , and the second flow channel 1012 is defined between the suction surface 112 of the blade 11 and the vortex eliminater 12 .

[0048] The pressure surface 111 of the blade 11 here refers to the high-pressure side of the airflow faced by the blade 11 during the rotation of the centrifugal wind wheel 10, and the suction surface 112 of the blade 11 refers to the low-pressure side of the airflow faced by the blade 11 during the rotation of the centrifugal wind wheel 10.

[0049] Specifically, when the centrifugal wind wheel 10 rotates, the airflow flows through the pressure surface 111 of the blade 11, and the speed of the airflow slows down, causing the air pressure at this position to increase, and the airflow flows through the suction surface 112 of the blade 11, and the speed of the airflow speeds up, causing the air pressure at this position to decrease.

[0050] For ease of understanding, two adjacent vortex eliminaters 12 and a blade 11 located between the two vortex eliminaters 12 are analyzed. The blade 11 includes a pressure surface 111 and a suction surface 112 disposed opposite to each other. The vortex eliminater 12 includes a first surface 121 and a second surface 122 disposed opposite to each other. The pressure surface 111 of the blade 11 is disposed opposite to the second surface 122 of one of the vortex eliminaters 12 to define a first flow channel 1011. The suction surface 112 of the blade 11 is disposed opposite to the first surface 121 of the other vortex eliminater 12 to define a second flow channel 1012.

[0051] The width of at least a portion of the first flow channel 1011 remains the same or gradually increases in the direction approaching the rotation center 130. In other words, the distance between the pressure surface 111 and the second surface 122 that are arranged opposite to each other can remain the same, or the distance between the pressure surface 111 and the second surface 122 that are arranged opposite to each other can gradually increase in the direction approaching the rotation center 130, or the distance between a portion of the pressure surface 111 and the second surface 122 remains the same, and the distance between another portion of the pressure surface 111 and the second surface 122 gradually increases in the direction approaching the rotation center 130.

[0052] Similarly, the width of at least a portion of the second flow channel 1012 remains the same or gradually increases in the direction approaching the rotation center 130. In other words, the distance between the suction surface 112 and the first surface 121 disposed opposite to each other may remain the same, or the distance between the suction surface 112 and the first surface 121 disposed opposite to each other may gradually increase in the direction approaching the rotation center 130, or the distance between a portion of the suction surface 112 and the first surface 121 remains the same, and the distance between another portion of the suction surface 112 and the first surface 121 gradually increases in the direction approaching the rotation center 130.

[0053] Therefore, by defining the first flow channel 1011 and the second flow channel 1012 between the vortex eliminater 12 and two adjacent blades 11 respectively, and making the first flow channel 1011 and the second flow channel 1012 both meet the above conditions, the flow separation and backflow phenomenon at the blade tip position of the blade 11 can be further reduced, the internal flow state of the centrifugal wind wheel 10 can be improved, the working capacity of the blade 11 can be further enhanced, and the working efficiency of the centrifugal wind wheel 10 can be greatly improved.

[0054] In some embodiments, the width of the first flow channel 1011 is greater than the width of the second flow channel 1012. In other words, the distance between the oppositely disposed pressure surface 111 and the second surface 122 is greater than the distance between the oppositely disposed suction surface 112 and the first surface 121.

[0055] As the centrifugal wind wheel 10 rotates, the air pressure on the pressure surface 111 of the blade 11 increases and the air pressure on the suction surface 112 of the blade 11 decreases. By limiting the width of the first flow channel 1011 to be greater than the width of the second flow channel 1012, there is sufficient space between the pressure surface 111 and the second surface 122, thereby further improving the working capacity of the blade 11 and further improving the working efficiency of the centrifugal wind wheel 10.

[0056] like Figure 2 As shown, according to some embodiments of the present invention, the vortex eliminating member 12 is close to the end of the rotation center 130 (such as Figure 2The distance between the second end portion 123) shown and the suction surface 112 of the blade 11 is d1, and the distance between one end of the vortex eliminator 12 close to the rotation center 130 and the pressure surface 111 of the blade 11 is d2, where d2 is greater than or equal to 3 times d1. For example, d2 can be equal to 3d1, 3.5d1, 4d1, 5d1, etc.

[0057] With such a setting, sufficient space can be ensured between the pressure surface 111 of the blade 11 and the vortex eliminator 12, thereby further improving the work - doing ability of the blade 11 and then enhancing the working efficiency of the centrifugal impeller 10.

[0058] As Figure 2 shown, according to some embodiments of the present invention, the vortex eliminator 12 has a first surface 121 and a second surface 122 arranged opposite to each other. The first surface 121 forms a concave arc surface, and the first surface 121 is arranged opposite to the suction surface 112 of the blade 11. The second surface 122 forms a convex arc surface, and the second surface 122 is arranged opposite to the pressure surface 111 of the blade 11.

[0059] Since the pressure surface 111 is a concave arc surface and the suction surface 112 is a concave arc surface, by setting the first surface 121 as a concave arc surface and the second surface 122 as a convex arc surface, at least a part of the width of the flow channel 101 defined between the pressure surface 111 and the second surface 122 and between the suction surface 112 and the first surface 121 can be kept consistent or gradually increased in the direction close to the rotation center 130, so as to better improve the internal flow state of the centrifugal impeller 10, enhance the work - doing ability of the blade 11, and thus improve the working efficiency of the centrifugal impeller 10.

[0060] According to some embodiments of the present invention, the width of the vortex eliminator 12 gradually decreases in the direction close to the rotation center 130.

[0061] Thus, by setting the width of the vortex eliminator 12 to gradually decrease in the direction close to the rotation center 130, at least a part of the width of the flow channel 101 defined between the opposite sides of the vortex eliminator 12 and the pressure surface 111 and the suction surface 112 respectively can be kept consistent or gradually increased in the direction close to the rotation center 130, so as to better improve the internal flow state of the centrifugal impeller 10, enhance the work - doing ability of the blade 11, and thus improve the working efficiency of the centrifugal impeller 10.

[0062] As Figure 1 and Figure 2 shown, according to some embodiments of the present invention, the distance between one end of the blade 11 close to the rotation center 130 (such as Figure 2 the first end portion 113) shown) and the rotation center 130 is R1, and the distance between one end of the vortex eliminator 12 close to the rotation center 130 (such as Figure 2The distance between the second end 123 shown in the figure and the rotation center 130 is R2, and R2 is greater than R1. In other words, the end of the vortex eliminating member 12 close to the rotation center 130 does not exceed the end of the blade 11 close to the rotation center 130.

[0063] With such an arrangement, the width of at least a portion of the flow channel 101 defined between the pressure surface 111 and the suction surface 112 on the opposite sides of the vortex eliminater 12 can be kept consistent or gradually increased in the direction approaching the rotation center 130, thereby better improving the internal flow state of the centrifugal wind wheel 10, enhancing the working capacity of the blades 11, and thus improving the working efficiency of the centrifugal wind wheel 10.

[0064] In some embodiments, the distance between one end of the blade 11 away from the rotation center 130 and the rotation center 130 is R3, and R2 satisfies the condition: 0.2*(R3-R1)+R1≤R2≤0.5*(R3-R1)+R1, thereby better improving the internal flow state of the centrifugal wind wheel 10, enhancing the working capacity of the blade 11, and thus improving the working efficiency of the centrifugal wind wheel 10.

[0065] For example, the distance R2 between one end of the vortex eliminating member 12 close to the rotation center 130 and the rotation center 130 may be equal to 0.2*(R3-R1)+R1, 0.3*(R3-R1)+R1, 0.4*(R3-R1)+R1, 0.5*(R3-R1)+R1, etc.

[0066] The inventors have discovered through a large number of experiments that if the axial height H2 of the vortex eliminater 12 of the bracket 13 is too large, it is easy to block the channel formed between two adjacent blades 11, thereby reducing the working efficiency of the centrifugal impeller 10; if the axial height H2 of the vortex eliminater 12 of the bracket 13 is too small, it will affect the vortex elimination effect.

[0067] By controlling the axial height H2 of the vortex elimination member 12 on the bracket 13 to 0.25-0.5 times the axial height H1 of the blade 11 on the bracket 13, that is, H2 satisfies the condition: 0.25*H1≤H2≤0.5*H1, the internal flow state of the centrifugal wind wheel 10 can be better improved, the vortex elimination effect can be enhanced, and the working capacity of the blade 11 can be enhanced, thereby improving the working efficiency of the centrifugal wind wheel 10.

[0068] Three sets of comparative experimental data are taken below to illustrate the experimental data of an embodiment of the present invention.

[0069] Comparative Example 1: The centrifugal wind wheel 10 includes a plurality of blades 11, and the plurality of blades 11 are arranged at intervals in the circumferential direction of a circle.

[0070] Comparative Example 2: The centrifugal impeller 10 includes a plurality of blades 11 and a plurality of vortex eliminaters 12, and the plurality of blades 11 and the plurality of vortex eliminaters 12 are arranged alternately and at intervals in the circumferential direction of a circle, and a height H1 of the blades 11 in the axial direction of the bracket 13 is equal to a height H2 of the vortex eliminaters 12 in the axial direction of the bracket 13.

[0071] Comparative Example 3: The centrifugal impeller 10 includes a plurality of blades 11 and a plurality of vortex eliminaters 12, and the plurality of blades 11 and the plurality of vortex eliminaters 12 are arranged alternately and at intervals in the circumferential direction of a circle, and a height H1 of the blade 11 in the axial direction of the bracket 13 is greater than a height H2 of the axial direction of the vortex eliminater 12 in the bracket 13, and the vortex eliminater 12 is closer to the root position of the blade 11 than the top position of the blade 11.

[0072] An embodiment of the present invention: A centrifugal wind wheel 10 includes a plurality of blades 11 and a plurality of vortex eliminaters 12, and the plurality of blades 11 and the plurality of vortex eliminaters 12 are arranged alternately and at intervals in the circumferential direction of a circle, a height H1 of the blade 11 in the axial direction of the bracket 13 is greater than a height H2 of the axial direction of the vortex eliminater 12 in the bracket 13, and, compared with the root position of the blade 11, the vortex eliminater 12 is closer to the tip position of the blade 11.

[0073] Figure 4 The wind volume-power curve diagram of the centrifugal wind wheel 10 of one embodiment of the present invention and the centrifugal wind wheels 10 of three comparative examples when working, by comparison, it can be found that by providing the vortex eliminating member 12 and making the vortex eliminating member 12 meet the above conditions, the working efficiency of the centrifugal wind wheel 10 can be improved. Specifically, when the working wind volume is 260CMH, the power of the centrifugal wind wheel 10 can be reduced by about 1W, and the reduction is about 3.4%, which has a relatively obvious effect.

[0074] like Figure 1-Figure 3 As shown, according to a further embodiment of the present invention, the bracket 13 includes a wheel disc 131 and a mounting ring 132, and the wheel disc 131 and the mounting ring 132 are arranged opposite to each other and spaced apart in the axial direction of the wheel disc 131, and a plurality of blades 11 and a plurality of vortex eliminaters 12 are arranged on the side of the wheel disc 131 facing the mounting ring 132, each blade 11 is connected to the wheel disc 131 and the mounting ring 132, and each vortex eliminater 12 is connected to the mounting ring 132 and spaced apart from the wheel disc 131.

[0075] In the above technical scheme, by setting the mounting ring 132, on the one hand, multiple blades 11 and multiple vortex eliminaters 12 can be fixed together, so that the relative arrangement of the multiple blades 11 and multiple vortex eliminaters 12 can be fixed to ensure the structural stability of the centrifugal wind wheel 10. On the other hand, the mounting ring 132 can improve the structural strength of the centrifugal wind wheel 10, further improve the structural stability of the centrifugal wind wheel 10, thereby improving the reliability of use of the centrifugal wind wheel 10.

[0076] Optionally, a fixing portion is provided at the center of the wheel disc 131 , which can be used to connect with the motor shaft of the motor 40 , so that the center of the wheel disc 131 coincides with the rotation axis of the wheel disc 131 .

[0077] Among them, the wheel disc 131 can be formed into a circular disc, the mounting ring 132 can be formed into a circular ring structure, the end of the blade 11 away from the rotation center 130 exceeds the outer wall of the circular disc, and the side surface of the vortex eliminater 12 and the blade 11 away from the wheel disc 131 is flush with the mounting ring 132.

[0078] The air conditioner indoor unit 1 according to an embodiment of the present invention will be described below with reference to the accompanying drawings.

[0079] like Figure 5-Figure 8 As shown, the air conditioner indoor unit 1 according to the embodiment of the present invention includes the centrifugal wind wheel 10 according to the above embodiment. Since the centrifugal wind wheel 10 according to the embodiment of the present invention has the above technical effects, the air conditioner indoor unit 1 according to the embodiment of the present invention also has the above technical effects, that is, by adopting the above centrifugal wind wheel 10, the working efficiency of the air conditioner indoor unit 1 can be improved.

[0080] like Figure 6 and Figure 7 As shown, according to some embodiments of the present invention, the air conditioner indoor unit 1 further includes a casing 20 , a volute 30 , a motor 40 and an indoor heat exchanger 50 .

[0081] The volute 30, the motor 40 and the indoor heat exchanger 50 are all arranged in the casing 20, and the volute 30 defines a chamber 301, the chamber 301 is used to accommodate the centrifugal wind wheel 10, the inlet 303 of the chamber 301 is located at one axial end of the centrifugal wind wheel 10, and the outlet 304 of the chamber 301 is located on the circumferential side of the centrifugal wind wheel 10, the motor 40 is connected to the centrifugal wind wheel 10 to drive the centrifugal wind wheel 10 to rotate, and the indoor heat exchanger 50 is arranged opposite to the inlet 303 of the chamber 301.

[0082] During operation, the motor 40 drives the centrifugal fan wheel 10 to rotate, and the centrifugal fan wheel 10 can suck the indoor air, so that the indoor air enters the casing 20 from the air inlet 201 and flows through the indoor heat exchanger 50. The air flow after heat exchange with the indoor heat exchanger 50 enters the chamber 301 from the inlet 303 of the volute 30, and is then discharged from the chamber 301 from the outlet 304 of the volute 30, and finally flows out from the air outlet 202 to adjust the temperature of the indoor space.

[0083] Therefore, by setting up the volute 30, the volute 30 can collect and guide the gas transported from the centrifugal wind wheel 10, so that the gas converges to the outlet 304 of the chamber 301. After the gas is discharged through the outlet 304 of the chamber 301, it is finally discharged from the outlet 202 on the casing 20.

[0084] In some embodiments, the housing 20 has an air inlet 201 and an air outlet 202, the air outlet 202 is located above the air inlet 201, the inlet 303 of the chamber 301 is located on the side of the volute 30, and the inlet 303 of the chamber 301 corresponds to the position of the air inlet 201, the outlet 304 of the chamber 301 is located at the upper part of the volute 30, and the outlet 304 of the chamber 301 corresponds to the position of the air outlet 202, so that air can enter and exit from the lower part of the housing 20.

[0085] In some embodiments, a mounting cavity 302 is defined on one side of the volute 30, the mounting cavity 302 is arranged opposite to and communicated with the inlet 303, and the indoor heat exchanger 50 is arranged in the mounting cavity 302. By providing the mounting cavity 302 on one side of the volute 30, the indoor heat exchanger 50 can be installed on the volute 30, so that the centrifugal wind wheel 10 and the indoor heat exchanger 50 can be integrated on the volute 30 to achieve a modular design.

[0086] like Figure 8 As shown, the volute 30 includes an upper volute 31 and a lower volute 32, the upper volute 31 is connected above the lower volute 32 to define a chamber 301, and an outlet 304 of the chamber 301 is provided at the upper volute 31. The upper volute 31 and the lower volute 32 are detachably connected, so as to facilitate the assembly and disassembly of the centrifugal impeller 10.

[0087] A specific embodiment of the air-conditioning indoor unit 1 according to the present invention is described below with reference to the accompanying drawings.

[0088] The air conditioner indoor unit 1 includes a casing 20 , a volute 30 , a centrifugal fan wheel 10 , a motor 40 , an indoor heat exchanger 50 , a filter 60 and an air guide assembly 70 .

[0089] The casing 20 includes a shell 21 and a panel 22, the panel 22 is connected to one side of the shell 21, the panel 22 includes a first wall and a second wall, the first wall extends in the up and down directions, the second wall is connected to the top of the first wall, the second wall extends obliquely from bottom to top toward the direction close to the shell 21, the first wall is provided with an air inlet 201, and the second wall is provided with an air outlet 202.

[0090] The volute 30 is arranged in the casing 20, and a chamber 301 is defined in the volute 30. The inlet 303 of the chamber 301 is arranged opposite to the air inlet 201, and the outlet 304 of the chamber 301 is located above the inlet 303 of the chamber 301 and corresponds to the position of the air outlet 202. An installation cavity 302 is defined outside the volute 30, and the installation cavity 302 is opposite to the inlet 303 and located between the inlet 303 and the air inlet 201.

[0091] The centrifugal wind wheel 10 is arranged in the chamber 301, and the centrifugal wind wheel 10 includes a wheel disc 131, a mounting ring 132, a plurality of blades 11 and a plurality of vortex eliminaters 12. The mounting ring 132 and the wheel disc 131 are arranged opposite to and spaced apart in the axial direction of the wheel disc 131. The plurality of blades 11 and the plurality of vortex eliminaters 12 are arranged on the side of the wheel disc 131 facing the mounting ring 132 and are arranged alternately and spaced apart in the circumferential direction of a circle. The axial height of the vortex eliminater 12 in the wheel disc 131 is less than the axial height of the blade 11 in the wheel disc 131. Compared with the root position of the blade 11, the vortex eliminater 12 is closer to the tip position of the blade 11. A first flow channel 1011 is defined between the pressure surface 111 of the blade 11 and the vortex eliminater 12, and a second flow channel 1012 is defined between the suction surface 112 of the blade 11 and the vortex eliminater 12.

[0092] The motor 40 is arranged on the side of the volute 30 facing away from the air inlet 201 and connected to the centrifugal wind wheel 10, and is used to drive the centrifugal wind wheel 10 to rotate. The indoor heat exchanger 50 is arranged in the installation cavity 302 defined outside the volute 30, that is, the indoor heat exchanger 50 is located between the inlet 303 of the chamber 301 and the air inlet 201, and a filter 60 is also arranged between the air inlet 201 and the indoor heat exchanger 50. The air guide assembly 70 is arranged above the indoor heat exchanger 50 and between the outlet 304 of the chamber 301 and the air outlet 202. The air guide assembly 70 includes a plurality of swingable air guide blades 71 for changing the air outlet direction.

[0093] The air conditioner according to the embodiment of the present invention comprises the air conditioner indoor unit 1 according to the above embodiment. The air conditioner here may be a window type air conditioner.

[0094] Since the air-conditioning indoor unit 1 according to the embodiment of the present invention has the above-mentioned technical effects, the air conditioner according to the embodiment of the present invention also has the above-mentioned technical effects, that is, by adopting the above-mentioned air-conditioning indoor unit 1, the working efficiency of the air conditioner can be improved and the user experience can be enhanced.

[0095] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0096] In the description of the present invention, "first feature" and "second feature" may include one or more of the features. In the description of the present invention, "plurality" means two or more. In the description of the present invention, a first feature "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through another feature between them. In the description of the present invention, a first feature "above", "above" and "above" a second feature may include the first feature being directly above and obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature.

[0097] The centrifugal fan wheel 10, the air-conditioning indoor unit 1 and other structures and operations of the air conditioner according to the embodiment of the present invention are well known to those skilled in the art and will not be described in detail here.

[0098] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0099] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A centrifugal wind wheel, It is characterized in that include: Bracket; A plurality of blades and a plurality of vortex eliminating members, wherein the plurality of blades and the plurality of vortex eliminating members are disposed on the support and are alternately arranged in a circumferential direction of a circle, and the vortex eliminating members are closer to the blade tip position of the blade than to the blade root position of the blade; Wherein, a flow channel is defined between the adjacent blades and the vortex eliminating member, and the width of at least a portion of the flow channel remains consistent or gradually increases in a direction approaching the rotation center of the bracket.

2. The centrifugal wind wheel according to claim 1, It is characterized in that The flow channel includes a first flow channel and a second flow channel. The first flow channel is defined between the pressure surface of the blade and the vortex eliminating member, and the second flow channel is defined between the suction surface of the blade and the vortex eliminating member. The width of at least a portion of each of the first flow channel and the second flow channel remains consistent or gradually increases in a direction approaching the rotation center.

3. The centrifugal wind wheel according to claim 2, It is characterized in that The width of the first flow channel is greater than the width of the second flow channel.

4. The centrifugal wind wheel according to claim 1, It is characterized in that The distance between one end of the vortex eliminating member close to the rotation center and the suction surface of the blade is d1, and the distance between one end of the vortex eliminating member close to the rotation center and the pressure surface of the blade is d2, and d2 is greater than or equal to 3 times of d1.

5. The centrifugal wind wheel according to claim 1, It is characterized in that The vortex eliminating member comprises a first surface and a second surface which are arranged opposite to each other, wherein the first surface forms a concave arc surface and is arranged opposite to the suction surface of the blade, and the second surface forms a convex arc surface and is arranged opposite to the pressure surface of the blade.

6. The centrifugal wind wheel according to claim 1, It is characterized in that The width of the vortex eliminating member gradually decreases in a direction approaching the rotation center.

7. The centrifugal wind wheel according to claim 1, It is characterized in that The distance between one end of the blade close to the rotation center and the rotation center is R1, the distance between one end of the vortex eliminating member close to the rotation center and the rotation center is R2, and R2 is greater than R1.

8. The centrifugal wind wheel according to claim 7, It is characterized in that The distance between the end of the blade away from the rotation center and the rotation center is R3, and R2 satisfies the condition: 0.2*(R3-R1)+R1≤R2≤0.5*(R3-R1)+R1.

9. The centrifugal wind wheel according to claim 1, It is characterized in that The height of the blade in the axial direction of the bracket is H1, and the height of the vortex eliminating member in the axial direction of the bracket is H2, and H2 satisfies the condition: 0.25*H1≤H2≤0.5*H1.

10. The centrifugal wind wheel according to any one of claims 1 to 9, It is characterized in that The support comprises: A wheel disc and a mounting ring, wherein the wheel disc and the mounting ring are arranged opposite to each other and spaced apart in the axial direction of the wheel disc; Among them, multiple blades and multiple vortex eliminaters are arranged on the side of the wheel disc facing the mounting ring, each blade is connected to the wheel disc and the mounting ring, and each vortex eliminater is connected to the mounting ring and is arranged spaced apart from the wheel disc.

11. An air conditioner indoor unit, It is characterized in that It comprises a centrifugal wind wheel according to any one of claims 1-10.

12. The air conditioner indoor unit according to claim 11, It is characterized in that Also includes: chassis; A volute, the volute is arranged in the casing and defines a chamber for accommodating the centrifugal wind wheel, the inlet of the chamber is located at one axial end of the centrifugal wind wheel, and the outlet of the chamber is located at the peripheral side of the centrifugal wind wheel; A motor, the motor is disposed in the housing and connected to the centrifugal wind wheel to drive the centrifugal wind wheel to rotate; An indoor heat exchanger is arranged opposite to the inlet of the chamber.

13. The air conditioner indoor unit according to claim 12, It is characterized in that The casing has an air inlet and an air outlet, the air outlet is located above the air inlet, the inlet is located on the side of the volute and corresponds to the position of the air inlet, and the outlet is located on the upper part of the volute and corresponds to the position of the air outlet.

14. An air conditioner, It is characterized in that It comprises an air-conditioning indoor unit according to any one of claims 11-13.

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