Air feeder and air conditioner

Abstract

The invention provides an air feeder and an air conditioner, and relates to the technical field of air conditioners. The air feeder comprises a volute and a flow guide plate; the volute comprises a top plate, a vortex-shaped side wall and a bottom wall which are connected with one another, an air supply channel is defined by the top plate, the nest-shaped side wall and the bottom wall, and an air outlet is formed in the nest-shaped side wall; the guide plate is arranged on the ceiling, an air inlet is formed in the inner edge of the guide plate, and the air inlet, the air supply channel and the air outlet are sequentially communicated; the inner flow guide wall of the flow guide plate comprises a first part and a second part, the first part and the second part both face the air supply channel and are concave cambered surfaces, the distance from the first part to the nest-shaped side wall is smaller than that from the second part to the nest-shaped side wall, and the curvature of the first part is larger than that of the second part. The air flow can form a stable vortex in the volute, so that the purposes of reducing noise and ensuring stable air supply are achieved, and the use experience of a user is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioners, and more particularly, to a blower and an air conditioner. Background Art

[0002] At present, a blower can achieve a high air supply volume with an impeller having a relatively small outer diameter. However, when the blower supplies air at a high rate, problems such as gas turbulence and high noise will be caused in the volute. For example, near the air outlet of the volute, since the distance between the impeller and the side wall of the volute is relatively far, the air flow is prone to instability and form turbulence here, thus affecting the air supply volume and reducing the user experience. Summary of the Invention

[0003] The present invention provides a blower and an air conditioner, which can form a stable eddy current in the volute, thereby achieving the purpose of reducing noise and ensuring stable air supply, and thus improving the user experience.

[0004] Embodiments of the present invention may be implemented as follows:

[0005] In a first aspect, the present invention provides a blower, including a volute and a deflector;

[0006] The volute includes a top plate, a spiral side wall and a bottom wall connected to each other. The top plate, the spiral side wall and the bottom wall enclose an air supply channel, and the spiral side wall is provided with an air outlet;

[0007] The deflector is disposed on the top plate. The inner edge of the deflector forms an air inlet, and the air inlet, the air supply channel and the air outlet are connected in sequence;

[0008] The inner deflector wall of the deflector includes a first part and a second part. Both the first part and the second part face the air supply channel and are concave arc surfaces. The distance from the first part to the spiral side wall is less than the distance from the second part to the spiral side wall, and the curvature of the first part is greater than the curvature of the second part.

[0009] In the above embodiment, by making the curvature of the second part with a larger distance from the spiral side wall relatively smaller, that is, the inner concave bending degree of the second part is small, so that after the air flow flows into the air supply channel from the air inlet, the air flow flows for a longer distance and then flows along the inner deflector wall with a larger curvature, so as to form a stable eddy current; by making the curvature of the first part with a smaller distance from the spiral side wall relatively larger, that is, the inner concave bending degree of the first part is large, so that after the air flow flows into the air supply channel from the air inlet, the air flow can flow along the inner deflector wall with a smaller curvature after flowing for a shorter distance, so as to form a stable eddy current, thereby suppressing the air flow turbulence in the air supply channel, reducing the noise, ensuring stable air supply, and further improving the user experience.

[0010] In an alternative embodiment, the first part and the second part are connected and arranged along the circumference of the air inlet. Along the axial direction of the air inlet, the distance from the inner diversion wall of the diversion plate to the concave side wall gradually increases, and the curvature of the first part and the second part gradually decreases.

[0011] In the above embodiment, by making the curvature of the first part and the second part gradually decrease along the extending direction from the first end to the second end, the curvature of the first part gradually decreases while the distance between the diversion plate and the concave side wall increases, so that a more stable eddy current can be formed by the air flow through the inner diversion wall after entering the air supply channel.

[0012] In an alternative embodiment, the air blower further includes an air outlet side wall. The concave side wall includes a first end and a second end. One side of the air outlet side wall is connected to the first end, and the other end, together with the second end, the top plate and the bottom wall, encloses the air outlet;

[0013] The distances from the first part and the second part to the concave side wall gradually increase along the extending direction from the first end to the second end, and the curvature of the first part and the second part gradually decreases.

[0014] In the above embodiment, the curvature of the first part and the second part is made to gradually decrease along the extending direction from the first end to the second end, so that the curvature of the first part gradually decreases while the distance between the diversion plate and the concave side wall increases, so that a more stable eddy current can be formed by the air flow through the inner diversion wall after entering the air supply channel.

[0015] In an alternative embodiment, the outer diversion wall of the diversion plate includes a third part and a fourth part. The third part and the fourth part are connected and both protrude as a convex arc surface away from the air supply channel;

[0016] The distance from the third part to the concave side wall is less than the distance from the fourth part to the concave side wall, and the curvature of the third part is greater than the curvature of the fourth part.

[0017] In the above embodiment, by providing an outer diversion wall protruding from the outer surface of the top plate on the outside of the diversion plate to divert part of the air flow before the air flow enters the air inlet, it is ensured that a more stable eddy current can be better formed after the air flow enters the air supply channel. And the curvature of the third part is greater than the curvature of the fourth part, so that the air flow of the outer diversion wall can stably flow into the blades along with the eddy current formed inside.

[0018] In an alternative embodiment, the air blower further includes an air outlet side wall. The nest-shaped side wall includes a first end and a second end. One side of the air outlet side wall is connected to the first end, and the other end, together with the second end, the top plate and the bottom wall, encloses the air outlet.

[0019] The distances between the third part and the fourth part and the nest-shaped side wall gradually increase in the extending direction from the first end to the second end, and the curvatures of the third part and the fourth part gradually decrease.

[0020] In the above embodiment, the curvature changes of the third part and the fourth part are the same as those of the first part and the second part, that is, as the nest-shaped side wall expands, both the inner air guiding wall and the outer air guiding wall of the air guiding plate gradually decrease in the extending direction from the first end to the second end, thereby jointly guiding the air flow and further ensuring the formation of a stable eddy current.

[0021] In an alternative embodiment, the third part corresponds to the first part, the fourth part corresponds to the first part, and the curvatures of the outer air guiding wall and the inner air guiding wall of the air guiding plate are the same.

[0022] In the above embodiment, the curvature changes of the inner and outer air guiding walls of the air guiding plate are exactly the same, which can make the overall stability in the extending direction of the incoming air flow from the volute tongue part to the air outlet, thereby greatly improving the air supply noise reduction effect.

[0023] In an alternative embodiment, the outer air guiding wall of the air guiding plate includes a third part and a fourth part, and both the third part and the fourth part protrude away from the air supply channel.

[0024] The distance from the third part to the nest-shaped side wall is less than the distance from the fourth part to the nest-shaped side wall, and the curvature of the third part is equal to the curvature of the fourth part.

[0025] In the above embodiment, the entire outer air guiding wall is in the shape of a semi-circular arc with a small curvature, which can make the air flow flow along the outer air guiding wall in an attached manner and generate the Coanda effect, so that the air flow flows into the blade and the connecting plate along the wall surface with a small curvature, and the effective width of the air flow blown out from the blade to the air outlet side is larger.

[0026] In an alternative embodiment, the air blower further includes an impeller. The impeller is disposed in the air supply channel, and the center of the air inlet is located on the rotation axis of the impeller.

[0027] In the above embodiment, the impeller is located at the exact center of the air inlet, so that the impeller rotates and can uniformly drive the air flow to flow from the air inlet to the air supply channel, thereby making the air flow form a more stable eddy current under the guiding action of the air guiding plate in the air supply channel.

[0028] In an alternative embodiment, the impeller includes a mounting plate, a connecting plate, a rotating shaft, and blades. The rotating shaft is rotatably disposed in the volute and connected to the mounting plate. The bottom end of the blade is connected to the mounting plate, and the top end is connected to the connecting plate. Both the blade and the connecting plate are located within the vertical projection of the deflector.

[0029] In the above embodiment, the rotating shaft drives the mounting plate to rotate, so as to drive the blade to rotate through the mounting plate, thereby disturbing the air flow and realizing air supply.

[0030] In a second aspect, the present invention provides an air conditioner, including the air blower according to any one of the foregoing embodiments.

[0031] The beneficial effects of the air blower and the air conditioner provided by the embodiments of the present invention include: by making the curvature of the second part with a greater distance from the volute-shaped side wall relatively smaller, that is, the concave bending degree of the second part is small, so that after the air flow flows into the air supply channel from the air inlet, the air flow flows for a longer distance and then flows along the inner deflector wall with a larger curvature, so as to facilitate the formation of a stable vortex; by making the curvature of the first part with a smaller distance from the volute-shaped side wall relatively larger, that is, the concave bending degree of the first part is large, so that after the air flow flows into the air supply channel from the air inlet, the air flow can flow along the inner deflector wall with a smaller curvature after flowing for a shorter distance, so as to facilitate the formation of a stable vortex, thereby suppressing the turbulent flow of the air flow in the air supply channel, reducing the noise, ensuring stable air supply, and further improving the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the embodiments. It should be understood that the following drawings only show some embodiments of the present invention, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.

[0033] Figure 1 Schematic diagram of the first perspective structure of the first embodiment of the air blower provided by the embodiment of the present invention;

[0034] Figure 2 Schematic diagram of the second perspective structure of the first embodiment of the air blower provided by the embodiment of the present invention;

[0035] Figure 3 One of the sectional views of the first embodiment of the air blower provided by the embodiment of the present invention;

[0036] Figure 4 Another sectional view of the first embodiment of the air blower provided by the embodiment of the present invention;

[0037] Figure 5 The third cross-sectional view of the first embodiment of the air blower provided by the embodiment of the present invention;

[0038] Figure 6 The structural schematic diagram of the first perspective of the second embodiment of the air blower provided by the embodiment of the present invention;

[0039] Figure 7 The structural schematic diagram of the second perspective of the second embodiment of the air blower provided by the embodiment of the present invention;

[0040] Figure 8 The first cross-sectional view of the second embodiment of the air blower provided by the embodiment of the present invention;

[0041] Figure 9 The second cross-sectional view of the second embodiment of the air blower provided by the embodiment of the present invention;

[0042] Figure 10 The third cross-sectional view of the second embodiment of the air blower provided by the embodiment of the present invention.

[0043] Icon: 10 - air blower; 100 - volute; 110 - top plate; 120 - volute side wall; 121 - first end; 122 - second end; 123 - volute tongue part; 130 - bottom wall; 140 - air supply channel; 150 - air outlet; 160 - air inlet; 200 - deflector; 210 - inner deflector wall; 211 - first part; 212 - second part; 220 - outer deflector wall; 221 - third part; 222 - fourth part; 300 - impeller; 310 - mounting plate; 320 - connecting plate; 330 - rotating shaft; 340 - blade; 400 - air outlet side wall. Detailed implementation manners

[0044] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. The components of the embodiments of the present invention described and illustrated herein usually can be arranged and designed in various different configurations.

[0045] Therefore, the detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the scope of protection of the present invention.

[0046] It should be noted that: similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0047] In the description of the present invention, it should be noted that if terms such as "upper", "lower", "inner", "outer", etc. are used to indicate the orientation or positional relationship, it is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the invention product is usually placed during use. This is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0048] In addition, if terms such as "first", "second", etc. are only used for distinguishing descriptions, they should not be construed as indicating or implying relative importance.

[0049] It should be noted that, without conflict, the features in the embodiments of the present invention can be combined with each other.

[0050] First Embodiment

[0051] The current blower 10 can achieve a high air delivery volume with an impeller 300 having a relatively small outer diameter. However, when the blower 10 performs high air delivery, problems such as gas turbulence and high noise will be caused inside the volute 100. For example, near the air outlet 150 of the volute 100, since the distance between the impeller 300 and the side wall of the volute 100 is relatively far, the air flow is prone to instability and form turbulence here, thereby affecting the air delivery volume and reducing the user experience.

[0052] Based on the above problems, the present invention provides a blower 10, which can be a single-sided inlet multi-wing blower 10, or a double-sided inlet multi-wing blower 10. Of course, it can also be other types of blowers 10; this blower 10 can be widely applied to the field of air transportation such as the indoor unit of an air conditioner, an air purifier, and an air exchanger.

[0053] Please refer to Figures 1 to 5 , the blower 10 includes a volute 100, a guide vane 200, and an impeller 300.

[0054] Among them, the volute 100 includes a top plate 110, a spiral side wall 120, and a bottom wall 130 that are connected to each other. The top plate 110, the spiral side wall, and the bottom wall 130 enclose an air delivery channel 140. The spiral side wall extends in a spiral shape so that the air delivery channel 140 extends in a spiral shape; the spiral side wall is provided with an air outlet 150. The guide vane 200 is disposed on the top plate 110, and the inner edge of the guide vane 200 forms an air inlet 160. The air inlet 160, the air delivery channel 140, and the air outlet 150 are sequentially connected. The impeller 300 is disposed in the air delivery channel 140 of the volute 100. Therefore, by rotating the impeller 300, the air flow can be driven to enter from the air inlet 160 and flow along the air delivery channel 140 to the air outlet 150, thereby realizing the air delivery function.

[0055] It should be noted that the air inlet 160 is circular and the flow guide plate 200 is annular.

[0056] The inner flow guide wall 210 of the flow guide plate 200 includes a first part 211 and a second part 212. Both the first part 211 and the second part 212 face the air supply channel 140 and are concave arc surfaces. The distance from the first part 211 to the nest-shaped side wall is less than the distance from the second part 212 to the nest-shaped side wall, and the curvature of the first part 211 is greater than the curvature of the second part 212.

[0057] In this embodiment, by making the curvature of the second part 212 with a larger distance from the nest-shaped side wall relatively smaller, that is, the concave bending degree of the second part 212 is small, so that after the air flow flows into the air supply channel 140 from the air inlet 160, the air flow flows for a longer distance and then flows along the inner flow guide wall 210 with a larger curvature, so as to facilitate the formation of a stable eddy current; by making the curvature of the first part 211 with a smaller distance from the nest-shaped side wall relatively larger, that is, the concave bending degree of the first part 211 is large, so that after the air flow flows into the air supply channel 140 from the air inlet 160, the air flow can flow along the inner flow guide wall 210 with a smaller curvature after flowing for a shorter distance, so as to facilitate the formation of a stable eddy current, thereby suppressing the turbulent flow of the air flow in the air supply channel 140, reducing the noise, ensuring stable air supply, and improving the user experience.

[0058] In addition, it should be noted that the first part 211 and the second part 212 are artificially divided, and their meanings are represented as: at any two arbitrarily designated places on the inner flow guide wall 210 of the flow guide plate 200, there is one place where the distance between the inner flow guide wall 210 and the nest-shaped side wall is less than the distance between the other inner flow guide wall 210 and the nest-shaped side wall, and at the same time, the curvature of the former inner flow guide wall 210 is greater than the curvature of the latter.

[0059] For easy understanding, taking the straight line passing through the axis of the impeller 300 and the volute tongue part 123 as the dividing line ( Figure 2 or Figure 7 the dotted line shown in

[0060] ), the flow guide plate 200 is divided into a first part 211 and a second part 212, as shown in the figure. Of course, the first part 211 and the second part 212 of the flow guide plate 200 can also be divided in other ways, and no specific limitation is made here.

[0061] In this embodiment, the curvatures of the first part 211 and the second part 212 gradually decrease. In other words, the curvature of the inner flow guiding wall 210 of the air deflector gradually decreases in the circumferential direction along the air inlet 160, so that the guiding effect of the incoming air flow at the entire air deflector can change uniformly, and thus the eddy current formed on the inner flow guiding wall 210 of the air deflector is more stable.

[0062] Further, the air blower 10 further includes an air outlet side wall 400. The nest-shaped side wall includes a first end 121 and a second end 122. One side of the air outlet side wall 400 is connected to the first end 121 and forms a volute tongue portion 123, and the other end jointly encloses an air outlet 150 with the second end 122, the top plate 110, and the bottom wall 130.

[0063] Since the nest-shaped side wall extends in a spiral shape, the distance between the air deflector and the nest-shaped side wall gradually increases in the extending direction from the first end 121 to the second end 122. That is, the distances between the first part 211 and the second part 212 and the nest-shaped side wall gradually increase in the extending direction from the first end 121 to the second end 122, and the curvatures of the first part 211 and the second part 212 gradually decrease.

[0064] That is to say, the first part 211 is close to the volute tongue portion 123 and has a small distance from the nest-shaped side wall. By making the curvature of the first part 211 relatively large, it is beneficial to form a stable air flow here; the second part 212 is close to the air outlet 150 and has a large distance from the nest-shaped side wall. By making the curvature of the second part 212 relatively small, it is beneficial to form a stable air flow here.

[0065] In order to adapt to the gradually increasing distance between the air deflector and the nest-shaped side wall in the extending direction from the first end 121 to the second end 122, the curvatures of the first part 211 and the second part 212 gradually decrease along the extending direction from the first end 121 to the second end 122, so that the curvature of the first part 211 gradually decreases while the distance between the air deflector and the nest-shaped side wall increases, and thus a more stable eddy current can be formed when the air flow enters the air supply channel 140 through the inner flow guiding wall 210.

[0066] Further, the outer flow guiding wall 220 of the deflector 200 includes a third part 221 and a fourth part 222. The third part 221 and the fourth part 222 are connected and both protrude in an arc shape away from the air supply channel 140; the distance from the third part 221 to the nest-shaped side wall is less than the distance from the fourth part 222 to the nest-shaped side wall, and the curvature of the third part 221 is greater than the curvature of the fourth part 222.

[0067] It can be understood that the definitions of the third part 221 and the fourth part 222 are the same as those of the first part 211 and the second part 212, and will not be elaborated here.

[0068] In this embodiment, since the airflow forms a vortex-like airflow after entering the air supply channel 140 from the air inlet 160 through the vortex-like side wall and the inner flow guiding wall 210, therefore, by providing an outer flow guiding wall 220 protruding from the outer surface of the top plate 110 on the outer side of the air guiding plate, it can guide part of the airflow before the airflow enters the air inlet 160, so as to ensure that the airflow can better form a stable vortex after entering the air supply channel 140. And the curvature of the third part 221 is greater than that of the fourth part 222, which can make the airflow of the outer flow guiding wall 220 flow stably into the blade 340 along with the vortex formed inside.

[0069] Further, the distances between the third part 221 and the fourth part 222 and the vortex-like side wall gradually increase in the extending direction from the first end 121 to the second end 122, and the curvatures of the third part 221 and the fourth part 222 gradually decrease. In other words, the curvature of the outer flow guiding wall 220 gradually decreases in the extending direction from the first end 121 to the second end 122.

[0070] In this embodiment, the curvature changes of the third part 221 and the fourth part 222 are the same as those of the first part 211 and the second part 212, that is, as the vortex-like side wall expands, the inner flow guiding wall and the outer flow guiding wall of the air guiding plate both gradually decrease in the extending direction from the first end 121 to the second end 122, so as to jointly guide the airflow and further ensure the formation of a stable vortex.

[0071] Specifically, the third part 221 corresponds to the first part 211, the fourth part 222 corresponds to the first part 211, and the curvatures of the outer flow guiding wall 220 of the flow guiding plate 200 and the inner flow guiding wall 210 of the flow guiding plate 200 are the same.

[0072] In this embodiment, the first part 211 and the second part 212 constitute the inner flow guiding wall 210 of the air guiding plate, the third part 221 and the fourth part 222 constitute the outer flow guiding wall 220 of the air guiding plate, and the first part 211 and the third part 221 are the inner and outer flow guiding walls 220 of the same part of the flow guiding plate 200, and the second part 212 and the fourth part 222 are the inner and outer flow guiding parts of the same part of the flow guiding plate 200.

[0073] That is to say, the curvature changes of the inner and outer flow guiding walls 220 of the flow guiding plate 200 are exactly the same, which can make the overall stability in the extending direction of the incoming air flow from the volute tongue part 123 to the air outlet 150, thus greatly improving the air supply noise reduction effect.

[0074] Further, the impeller 300 is arranged in the air supply channel 140, and the rotation axis center of the impeller 300 is located at the center of the circle of the air inlet 160.

[0075] In this embodiment, the impeller 300 is located at the exact center of the air inlet 160, so that the impeller 300 rotates and can uniformly drive the air flow to flow from the air inlet 160 to the air supply channel 140, thereby enabling the air flow to form a more stable eddy current under the guiding action of the guiding plate 200 in the air supply channel 140.

[0076] Further, the impeller 300 includes a mounting plate 310, a connecting plate 320, a rotating shaft 330 and blades 340. The rotating shaft 330 is rotatably arranged in the volute 100 and connected to the mounting plate 310. The bottom end of the blade 340 is connected to the mounting plate 310, and the top end is connected to the connecting plate 320.

[0077] In this embodiment, the connecting plate 320 is annular, and both the blades 340 and the connecting plate 320 are located within the vertical projection of the guiding plate 200. Therefore, at the first part 211 and the third part 221 of the guiding plate 200, the air flow G1a enters the air inlet 160 along the third part 221 of the outer guiding wall 220, enters the middle of the blades 340 from the annular interior of the connecting plate 320, then flows from the gaps between the blades 340 below the connecting plate 320 to the volute side wall, and then smoothly flows from the volute side wall to the first part 211 of the inner guiding wall 210, and finally flows from the inner guiding wall 210 towards the annular center of the connecting plate 320, thereby forming a stable eddy current V1, and being conducive to the air flow G1a flowing into the blades 340 more stably along with the eddy current V1.

[0078] Similarly, at the second part 212 and the fourth part 222 of the guiding plate 200, the air flow G2a enters the air inlet 160 along the fourth part 222 of the outer guiding wall 220, enters the middle of the blades 340 from the annular interior of the connecting plate 320, and then flows from the gaps between the blades 340 below the connecting plate 320 to the volute side wall. Since the distance between the inner guiding wall 210 and the volute side wall is relatively far here, the air flow blowing towards the air outlet 150 is usually mixed here, which will cause the air flow to be unstable. Therefore, the curvature of the second part 212 of the inner guiding wall 210 is set to be smaller, which can reduce the internal space of the inner guiding wall 210, so that the turbulent flow will not be promoted, thereby forming a stable eddy current V2 at the second part 212 of the inner guiding wall 210, and being conducive to the air flow G2a flowing into the blades 340 more stably along with the eddy current V2, and suppressing the turbulent flow, which can greatly improve the effect of air supply noise reduction.

[0079] Further, the guiding plate 200 and the volute 100 can be made by an integral molding process for easy assembly.

[0080] Second Embodiment

[0081] Refer to Figures 6 to 10, the present invention also provides a blower 10. The difference from the first embodiment is that the curvature of the third part 221 is equal to the curvature of the fourth part 222, that is, the curvature of the outer guide wall 220 of the guide vane 200 remains unchanged. For a brief description, for the parts not mentioned in this embodiment, reference can be made to the corresponding content in the first embodiment.

[0082] In this embodiment, by providing an outer guide wall 220 protruding from the outer surface of the top plate 110 on the outer side of the air guide plate, a part of the air flow can be guided before the air flow enters the air inlet 160, so as to ensure that a stable eddy current is better formed after the air flow enters the air supply channel 140.

[0083] Specifically, at the first part 211 and the third part 221 of the guide vane 200, the air flow H1a enters the air inlet 160 along the third part 221 of the outer guide wall 220, enters the middle of the blade 340 from the annular interior of the connecting plate 320, then flows from the gap of the blade 340 below the connecting plate 320 to the nest-shaped side wall, and then smoothly flows from the nest-shaped side wall to the first part 211 of the inner guide wall 210, and finally flows from the inner guide wall 210 towards the annular center of the connecting plate 320, thereby forming a stable eddy current W1, and it is beneficial for the air flow H1a to flow into the blade 340 more stably along with the eddy current W1.

[0084] Similarly, at the second part 212 and the fourth part 222 of the guide vane 200, the air flow H2a enters the air inlet 160 along the fourth part 222 of the outer guide wall 220, enters the middle of the blade 340 from the annular interior of the connecting plate 320, and then flows from the gap of the blade 340 below the connecting plate 320 to the nest-shaped side wall. Since the distance between the inner guide wall 210 and the nest-shaped side wall is relatively far here, the air flow blowing towards the air outlet 150 is usually mixed here, which will cause the air flow to be unstable. Therefore, the curvature of the second part 212 of the inner guide wall 210 is set to be smaller, which can reduce the internal space of the inner guide wall 210, so that the turbulent flow will not be promoted, thereby forming a stable eddy current W2 at the second part 212 of the inner guide wall 210; and because the curvature of the outer guide wall 220 of the guide vane 200 remains unchanged, that is, the entire outer guide wall 220 is in the shape of a semi-circular arc with a smaller curvature, the air flow can flow along the outer guide wall 220 in an attached manner and generate the Coanda effect, so that the air flow flows into the blade 340 and the connecting plate 320 along the small-curvature wall surface, making the effective width of the air flow blown out from the blade 340 towards the air outlet 150 side larger.

[0085] Furthermore, the present invention also provides an air conditioner, and the air conditioner includes the blower 10 in the above embodiment.

[0086] In summary, the embodiment of the present invention provides a blower 10 and an air conditioner. By making the curvature of the second part 212 with a greater distance from the nest-shaped side wall relatively small, even if the concave bending degree of the second part 212 is small, so that after the air flow enters the air supply channel 140 from the air inlet 160, the air flow flows for a longer distance and then flows along the inner guide wall 210 with a larger curvature, so as to facilitate the formation of a stable eddy current; by making the curvature of the first part 211 with a smaller distance from the nest-shaped side wall relatively large, even if the concave bending degree of the first part 211 is large, so that after the air flow enters the air supply channel 140 from the air inlet 160, the air flow can flow along the inner guide wall 210 with a smaller curvature after flowing for a shorter distance, so as to facilitate the formation of a stable eddy current, thereby suppressing the turbulent flow of the air flow in the air supply channel 140, reducing the noise, ensuring stable air supply, and further improving the user experience.

[0087] As described above, the above is only the specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed by the present invention should be covered by the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims

1. A blower, characterized in that, It includes a volute (100) and a guide vane (200); The volute (100) includes a top plate (110), a spiral side wall (120) and a bottom wall (130) which are connected. The top plate (110), the spiral side wall and the bottom wall (130) enclose an air supply channel (140), and the spiral side wall is provided with an air outlet (150); The guide vane (200) is arranged on the top plate (110). The inner edge of the guide vane (200) forms an air inlet (160), and the air inlet (160), the air supply channel (140) and the air outlet (150) are connected in sequence; The inner guide wall (210) of the guide vane (200) includes a first part (211) and a second part (212). Both the first part (211) and the second part (212) face the air supply channel (140) and are concave arc surfaces. The distance from the first part (211) to the spiral side wall is less than the distance from the second part (212) to the spiral side wall, and the curvature of the first part (211) is greater than the curvature of the second part (212).

2. The blower according to claim 1, wherein, The first part (211) and the second part (212) are connected and arranged along the circumference of the air inlet (160). Along the axial direction of the air inlet (160), the distance from the inner guide wall (210) of the guide vane (200) to the spiral side wall gradually increases, and the curvatures of the first part (211) and the second part (212) gradually decrease.

3. The blower according to claim 2, characterized in that, The air blower further includes an air outlet side wall (400). The spiral side wall includes a first end (121) and a second end (122). One side of the air outlet side wall (400) is connected to the first end (121), and the other end, together with the second end (122), the top plate (110) and the bottom wall (130), encloses the air outlet (150); The distances from the first part (211) and the second part (212) to the spiral side wall gradually increase in the extending direction from the first end (121) to the second end (122), and the curvatures of the first part (211) and the second part (212) gradually decrease.

4. The air blower according to claim 1, wherein The outer guide wall (220) of the guide vane (200) includes a third part (221) and a fourth part (222). The third part (221) and the fourth part (222) are connected and both face away from the air supply channel (140) and are convex arc surfaces; The distance from the third part (221) to the spiral side wall is less than the distance from the fourth part (222) to the spiral side wall, and the curvature of the third part (221) is greater than the curvature of the fourth part (222).

5. The blower according to claim 4, wherein The air blower further includes an air outlet side wall (400). The spiral side wall includes a first end (121) and a second end (122). One side of the air outlet side wall (400) is connected to the first end (121), and the other end, together with the second end (122), the top plate (110) and the bottom wall (130), encloses the air outlet (150); The distances between the third part (221) and the fourth part (222) and the nest-shaped side wall gradually increase in the extending direction from the first end (121) to the second end (122), and the curvatures of the third part (221) and the fourth part (222) gradually decrease.

6. The blower according to claim 4, characterized in that, The third part (221) corresponds to the first part (211), the fourth part (222) corresponds to the first part (211), and the curvatures of the outer flow guide wall (220) and the inner flow guide wall (210) of the flow guide plate (200) are the same.

7. The blower according to claim 1, wherein The outer flow guide wall (220) of the flow guide plate (200) includes a third part (221) and a fourth part (222), and both the third part (221) and the fourth part (222) protrude away from the air supply channel (140). The distance from the third part (221) to the nest-shaped side wall is less than the distance from the fourth part (222) to the nest-shaped side wall, and the curvature of the third part (221) is equal to the curvature of the fourth part (222).

8. The blower according to claim 1, characterized in that, The air blower further includes an impeller (300), the impeller (300) is disposed in the air supply channel (140), and the center of the air inlet (160) is located on the rotation axis of the impeller (300).

9. The blower according to claim 8, characterized in that, The impeller (300) includes a mounting plate (310), a connecting plate (320), a rotating shaft (330), and blades (340). The rotating shaft (330) is rotatably disposed in the volute (100) and connected to the mounting plate (310). The bottom ends of the blades (340) are connected to the mounting plate (310), and the top ends are connected to the connecting plate (320). Both the blades (340) and the connecting plate (320) are located within the vertical projection of the flow guide plate (200).

10. An air conditioner, characterized in that, An air blower including the air blower according to any one of claims 1-9.

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