CN212318336U - Fan and air conditioner - Google Patents

Abstract

The utility model provides a fan and air conditioner. Wherein, the fan includes: a volute provided with an opening; the guide ring is arranged at the opening, and part of the guide ring extends towards the interior of the volute; the impeller is arranged in the volute and provided with a plurality of blades, and the outer edge of any one of the blades is provided with a concave part; wherein, the part of the guide ring extending into the volute is arranged corresponding to the depressed part. The utility model discloses a rationally set up the cooperation structure of blade and water conservancy diversion circle, increased the clearance between water conservancy diversion circle and the blade, should set up and make under the certain circumstances of spiral case structure, can assemble the longer impeller of axial length, do under the certain circumstances of axial length of impeller for clearance value between water conservancy diversion circle and the blade can set up littleer, with the same amount of wind is assigned to satisfying lower rotational speed, and then reduces the running noise of fan.

Description

Fan and air conditioner

Technical Field

The utility model relates to an air conditioner technical field particularly, relates to a fan and an air conditioner.

Background

In the related art, as shown in fig. 1 and 2, due to consideration of the jumping amount of the impeller 130 ' when the fan 100 ' operates and the influence of the inclination of the impeller 130 ' on the safe operation, the gap between the end of the impeller 130 ' and the guide ring 118 ' is relatively large, that is, the axial dimension of the impeller 130 ' is relatively small under a certain structure of the volute 110 ', so as to ensure that the blades 132 ' of the impeller 130 ' and the guide ring 118 ' do not collide when the fan 100 ' operates. Therefore, the work area of the impeller 130 'is reduced, and the leakage amount of the air flow is large when the fan 100' operates, which results in large operation noise of the product.

SUMMERY OF THE UTILITY MODEL

The present invention aims at least solving one of the technical problems existing in the prior art or the related art.

Therefore, the utility model discloses a first aspect provides a fan.

A second aspect of the present invention provides an air conditioner.

In view of this, the utility model discloses a first aspect provides a fan, include: a volute provided with an opening; the guide ring is arranged at the opening, and part of the guide ring extends towards the interior of the volute; the impeller is arranged in the volute and provided with a plurality of blades, and the outer edge of any one of the blades is provided with a concave part; wherein, the part of the guide ring extending into the volute is arranged corresponding to the depressed part.

The utility model provides a pair of fan includes spiral case, water conservancy diversion circle and impeller, and the impeller is equipped with a plurality of blades. Through the cooperation structure of reasonable setting blade and water conservancy diversion circle for the outer fringe of any blade in a plurality of blades all is equipped with the depressed part, and makes the depressed part and water conservancy diversion circle stretch into the inside part of spiral case corresponding, promptly, has increased the clearance between water conservancy diversion circle and the blade. This setting makes under the certain circumstances of spiral case structure, can assemble the longer impeller of axial length, and then can increase the acting capacity of impeller, is favorable to reducing fan operation rotational speed under the certain circumstances of the amount of wind to reduce the running noise of product. The axial length of impeller under certain circumstances also for the clearance value between water conservancy diversion circle and the blade can set up littleer, satisfies the same amount of wind under the rotational speed of comparison low, with the running noise that reduces the fan, and be favorable to reducing the overall dimension of fan, and then can reduce the occupancy of fan to the inner space of air conditioner, satisfies lower cost or adapts to more diversified installation space's operation requirement.

According to the utility model discloses foretell fan can also have following additional technical characterstic:

in the above technical solution, further, the recess includes any one of or a combination of the following: a plane, a curved surface and a folded surface; wherein, the depressed part is sunken towards the direction of the guide ring deviating from the inner part of the volute.

In this technical scheme, can set up the structure of depressed part according to the concrete inner structure of fan or fan model, if, the depressed part includes the plane, if, the depressed part includes the curved surface, if, the depressed part includes the folded surface, if, the depressed part includes plane and curved surface, if, the depressed part includes plane and folded surface, if, the depressed part includes curved surface and folded surface, if, the depressed part includes plane, curved surface and folded surface.

In any one of the above technical solutions, further, the recess portion penetrates the blade in a thickness direction of the blade.

In this technical scheme, through the structure of reasonable setting depressed part for the depressed part runs through the blade along the thickness direction of blade, like this, can guarantee the homogeneity and the uniformity in the gap between depressed part and the water conservancy diversion circle of stretching into the spiral case inside, and then can guarantee that the safety clearance between impeller tip and the water conservancy diversion circle remains throughout in the pneumatic clearance within range of best, take place with the condition of bumping between impeller and the water conservancy diversion circle when avoiding the fan operation, be favorable to reducing the running noise of product under the certain circumstances of the amount of wind.

In any of the above technical solutions, further, distances from any point on the depression to one end of the flow guiding ring facing the inside of the volute are all equal.

In the technical scheme, the structure of the depressed part and the position relation of the depressed part and the flow guide ring are reasonably arranged, so that the distance from any point on the depressed part to one end, facing the inside of the volute, of the flow guide ring is equal, namely, the depressed part is constructed into the arc-shaped depressed part, therefore, the uniformity and consistency of the distance from the depressed part to one end, facing the inside of the volute, of the flow guide ring are realized, the safety clearance between the end part of the impeller and the flow guide ring can be ensured to be always kept in the optimal pneumatic clearance range, and the reduction of the running noise of a product under the condition of certain air volume is facilitated.

In any of the above technical solutions, further, a range of a distance from any point on the recessed portion to an end of the flow guiding ring facing the inside of the volute is as follows: 4mm to 10 mm.

In this technical scheme, the value range of the distance of arbitrary one point on the depressed part to the one end of water conservancy diversion circle towards the inside spiral case is: 4mm to 10mm, like this, realized giving consideration to the amount of wind of product and the running noise of product, realized the optimization of product performance.

In any of the above solutions, further, an end of the blade on a side toward the impeller axis is provided with a chamfer, the chamfer being configured as at least a part of the recess.

In the technical scheme, the position of the concave part is reasonably arranged, so that the end part of one side, facing the axis of the impeller, of the blade is provided with the chamfer, the chamfer is constructed into at least one part of the concave part, the vortex intensity of airflow formed at the position can be reduced by arranging the chamfer, and the noise generated by airflow vortex when the fan operates can be effectively reduced. In addition, the minimum clearance between the guide ring and the blades is increased through the arrangement, so that an impeller with longer axial length can be assembled under the condition that the structure of the volute is fixed, and the clearance value between the guide ring and the blades can be set smaller under the condition that the axial length of the impeller is fixed, so that the operation rotating speed of the fan can be reduced under the condition that the air volume is fixed, and the operation noise of a product is reduced. Meanwhile, the device has the advantages of simple processing technology, convenient operation and low production cost.

Meanwhile, the device has the advantages of simple processing technology, convenient operation and low production cost.

In any of the above technical solutions, further, the impeller further includes: the first ends of the blades are connected with the middle disc; the frame is opposite to the middle disc and arranged at intervals, the second end of the blade is connected with the frame, and the connecting part of the first end of the blade and the concave part is in smooth transition; wherein, the frame is located between well dish and water conservancy diversion circle.

In this technical scheme, the impeller still includes well dish and frame, well dish and frame are relative and interval arrangement, and the blade has relative first end and second end, and the first end and the well dish of blade are connected, and the second end and the frame of blade are connected, and well dish and frame have the effect of supporting, fixed blade, are favorable to strengthening the bulk strength of impeller, can guarantee the steadiness and the reliability of blade assembly.

Meanwhile, the smooth transition of the connection part of the first end of the blade and the concave part avoids the situation of cutting operators, the safety and the reliability of the assembly and the disassembly of the impeller can be ensured, and meanwhile, the arrangement can reduce the vortex intensity of airflow formed at the position, so that the noise generated by airflow vortex when the fan operates can be effectively reduced. In addition, the blade is convenient to process and quick to demould.

In any of the above technical solutions, further, a fillet is formed at a connection of the first end of the blade and the recess.

In the technical scheme, the fillet is formed at the joint of the first end of the blade and the concave part, so that smooth transition of the joint of the first end of the blade and the concave part is realized, the safety and the reliability of the impeller can be ensured, and the running noise of a product can be reduced. Meanwhile, the structure has the advantages of simple processing technology, convenient operation, high production efficiency and low production cost.

In any of the above technical solutions, further, a radius of the fillet is less than or equal to a distance from the concave portion to an end of the flow guiding ring facing the inside of the volute.

In this technical scheme, through the structure of the junction of the first end of reasonable setting blade and depressed part, and the radius of radius fillet and the relation of depressed part to the distance of the inside one end of water conservancy diversion circle orientation spiral case for the radius of radius fillet is less than or equal to the distance of depressed part to the inside one end of water conservancy diversion circle orientation spiral case, has realized taking into account the amount of wind of product and the running noise of product, has realized the optimization of product performance.

A second aspect of the present invention provides an air conditioner, comprising a fan according to any one of the first aspect.

The utility model provides an air conditioner is because of including as in the first aspect in arbitrary technical scheme's fan, consequently has the whole beneficial effect of above-mentioned fan, does not make the statement one by one here.

Additional aspects and advantages of the invention will be set forth in part in the description which follows, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic view showing a structure of a fan in the related art;

FIG. 2 is a schematic view showing a partial structure of a fan in the related art;

fig. 3 shows a schematic structural diagram of a fan according to an embodiment of the present invention;

fig. 4 shows a schematic partial structural view of a fan according to an embodiment of the present invention;

fig. 5 shows a schematic structural view of a first viewing angle of an impeller according to an embodiment of the present invention;

FIG. 6 is an enlarged view of a portion of the embodiment of FIG. 5 at A;

fig. 7 shows a schematic structural view of a second perspective of an impeller according to an embodiment of the present invention;

fig. 8 shows a partial structural schematic view of an impeller according to an embodiment of the present invention;

FIG. 9 illustrates a partial structural schematic view of a volute and vanes of an embodiment of the present invention;

fig. 10 shows a partial schematic structural view of the frame and the blade of the first embodiment of the present invention;

fig. 11 shows a partial schematic structural view of a frame and a blade according to a second embodiment of the invention;

fig. 12 shows a partial schematic structural view of a frame and a blade according to a third embodiment of the present invention;

fig. 13 shows a flow-noise graph for the same volute structure and different impeller structures according to an embodiment of the present invention.

Wherein, the correspondence between the reference numbers and the component names in fig. 1 and fig. 2 is:

100 ' fan, 110 ' volute, 118 ' inducer, 130 ' impeller, 132 ' blade;

the correspondence between reference numerals and part names in fig. 3 to 12 is:

100 fan, 110 volute, 112 first sidewall assembly, 114 second sidewall assembly, 116 sidewall, 118 inducer, 119 first inducer, 120 opening, 130 impeller, 132 vane, 134 mid-disk, 136 rim, 138 depression, 140 first end, 144 third end, 146 fourth end, 148 fillet.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention more clearly understood, the present invention will be described in further detail with reference to the accompanying drawings and detailed description. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.

The blower 100 and the air conditioner according to some embodiments of the present invention are described below with reference to fig. 3 to 13.

Example 1:

as shown in fig. 3 to 9, an embodiment of the first aspect of the present invention provides a fan 100 including a volute 110, a guide ring 118 and an impeller 130, wherein the impeller 130 is provided with a plurality of blades 132, the volute 110 is provided with an opening 120, the guide ring 118 is provided at the volute 110, and the guide ring 118 is located at the opening 120.

The part of the guide ring 118 extends towards the inside of the volute 110, that is, the part of the guide ring 118 extends into the volute 110 through the opening 120, the part of the guide ring 118 extending into the volute 110 is referred to as a first guide portion 119, and by reasonably arranging the matching structures of the vanes 132 and the guide ring 118, the outer edge of any one vane 132 of the vanes 132 is provided with a recessed portion 138, and the recessed portion 138 corresponds to the first guide portion 119, that is, the gap between the guide ring 118 and the vanes 132 is increased, wherein the distance from the recessed portion 138 to one end of the first guide portion 119 facing the inside of the volute 110 is the minimum gap between the guide ring 118 and the impeller 130.

Specifically, fig. 2 shows a partial structural schematic diagram of the fan 100' in the related art, and fig. 9 is a partial structural schematic diagram of the volute 110 and the blade 132 of the present invention. As can be seen from comparison, the distance L 'from the vane 132' to the guide ring 118 'toward the inner end of the spiral case 110' in the related art is less than the distance L from the recess 138 to the first guide portion 119 toward the inner end of the spiral case 110, that is, the gap between the guide ring 118 and the vane 132 is increased.

The arrangement enables the impeller 130 with longer axial length to be assembled under the condition that the structure of the volute 110 is certain, so that the acting capacity of the impeller 130 can be increased, and the reduction of the running rotating speed of the fan 100 under the condition that the air volume is certain is facilitated, thereby reducing the running noise of products. Also under the certain condition of the axial length of impeller 130 for the clearance value between seal ring 118 and blade 132 can set for littleer, satisfies reaching the same amount of wind under the rotational speed of comparison low, with the noise of operation that reduces fan 100, and is favorable to reducing the overall dimension of fan 100, and then can reduce fan 100 to the occupancy of the inner space of air conditioner, satisfies lower cost or adapts to the operation requirement of more diversified installation space.

Further, the arrangement enables the air conditioner using the fan 100 to send out larger air volume under the condition of certain running noise of the product, and the requirement of air conditioning in a larger space can be met; or under the condition that the air supply quantity of the air conditioner is certain, the air conditioner is favorable for reducing the running noise of products and can improve the use comfort of the air conditioner.

Further, under the condition that the air supply quantity of the air conditioner is constant, the static pressure is higher so as to overcome the resistance in the air supply pipeline of the air conditioner, and the equipment installation in the air conditioner pipeline is reduced.

Further, under the condition that the operation noise and the air supply quantity of a product are fixed, the air conditioner has a smaller volume, and can meet the use requirements of lower cost or more diversified installation spaces.

Example 2:

according to an embodiment of the invention, including the features defined in any of the above embodiments, and further: the recess 138 includes any one or combination of the following: flat, curved and dog-eared, and additionally, the recess 138 is recessed away from the inducer 118 inside the volute 110.

In detail, the configuration of the recess 138 may be configured according to a specific internal configuration of the blower 100 or a model of the blower 100, e.g., the recess 138 includes a flat surface, e.g., the recess 138 includes a curved surface, e.g., the recess 138 includes a flat surface and a folded surface, e.g., the recess 138 includes a curved surface and a folded surface, e.g., the recess 138 includes a flat surface, a curved surface and a folded surface.

Specifically, as shown in fig. 9 and 10, the recess 138 includes a curved surface, as shown in fig. 11, the recess 138 includes a flat surface, and as shown in fig. 12, the recess 138 includes a curved surface and a flat surface.

Example 3:

as shown in fig. 4, 5, 6, 8, 9, 10, 11 and 12, according to an embodiment of the invention, including features defined in any of the above embodiments, and further: the recess 138 includes any one or combination of the following: the recess 138 penetrates the blade 132 in the thickness direction of the blade 132.

In detail, as shown in fig. 6, the thickness of the vane 132 is denoted by t, and the recessed portion 138 is reasonably arranged to penetrate through the vane 132 along the thickness direction of the vane 132, so that the uniformity and consistency of the gap between the recessed portion 138 and the flow guide ring 118 extending into the volute 110 can be ensured, and further, the safety gap between the end of the impeller 130 and the flow guide ring 118 can be ensured to be always kept within the optimal pneumatic gap range, so as to avoid the occurrence of collision between the impeller 130 and the flow guide ring 118 when the fan 100 operates, and to facilitate the reduction of the operating noise of the product under the condition of a certain air volume.

Example 4:

according to an embodiment of the invention, including the features defined in any of the above embodiments, and further: any point on the recess 138 is equidistant from the end of the inducer 118 facing the interior of the volute 110.

In detail, by reasonably setting the structure of the recessed portion 138 and the positional relationship between the recessed portion 138 and the flow guiding ring 118, the distances from any point on the recessed portion 138 to one end of the flow guiding ring 118 facing the inside of the volute 110 are all equal, that is, the recessed portion 138 is configured as the arc-shaped recessed portion 138, so that the uniformity and consistency of the distances from the recessed portion 138 to one end of the flow guiding ring 118 facing the inside of the volute 110 are realized, the safety clearance between the end of the impeller 130 and the flow guiding ring 118 can be ensured to be always kept in the optimal pneumatic clearance range, and the reduction of the running noise of the product under the condition of a certain air volume is facilitated.

Further, the distance from any point on the recess 138 to the end of the guide ring 118 facing the inside of the volute 110 has a range of: 4mm to 10 mm. Therefore, the air quantity of the product and the operation noise of the product are considered, and the optimization of the use performance of the product is realized.

Specifically, the distance from any point on the recess 138 to the end of the deflector ring 118 facing the inside of the volute 110 is 5mm, 6mm, 7mm, 8mm, 9mm, and so on, which are not listed here.

Example 5:

as shown in fig. 4, 5, 6, 8, 9, 10, 11 and 12, according to an embodiment of the invention, including features defined in any of the above embodiments, and further: the end of the vane 132 on the side toward the axis of the impeller 130 is provided with a chamfer configured as at least a part of the recess 138.

In detail, by properly positioning the recess 138 such that the end of the vane 132 facing the axial line of the impeller 130 is chamfered, the chamfer being configured as at least a portion of the recess 138, the chamfered position can reduce the strength of the airflow vortex formed at the position, thereby effectively reducing the noise generated by the airflow vortex when the fan 100 is operated. In addition, the minimum clearance between the guide ring 118 and the blades 132 is increased, so that the impeller 130 with longer axial length can be assembled under the condition that the structure of the volute 110 is fixed, and the clearance value between the guide ring 118 and the blades 132 can be set smaller under the condition that the axial length of the impeller 130 is fixed, so that the running rotating speed of the fan 100 can be reduced under the condition that the air volume is fixed, and the running noise of a product is reduced. Meanwhile, the device has the advantages of simple processing technology, convenient operation and low production cost.

Further, as shown in fig. 4, 5, 7 and 8, the impeller 130 further includes a central disc 134 and a peripheral frame 136, the central disc 134 is opposite to and spaced apart from the peripheral frame 136, the vane 132 has opposite first and second ends 140 and 140, the first end 140 of the vane 132 is connected to the central disc 134, the second end of the vane 132 is connected to the peripheral frame 136, and the central disc 134 and the peripheral frame 136 have the functions of supporting and fixing the vane 132, which is beneficial to enhancing the overall strength of the impeller 130 and can ensure the stability and reliability of the assembly of the vane 132.

Meanwhile, the junction between the first end 140 of the vane 132 and the recess 138 (e.g., a chamfer) is smoothly transitioned, so as to avoid cutting an operator, ensure the safety and reliability of the assembly and disassembly of the impeller 130, and reduce the strength of the airflow vortex formed at the position, thereby effectively reducing the noise generated by the airflow vortex during the operation of the fan 100. In addition, this arrangement facilitates processing of the blade 132 and faster demolding.

Specifically, as shown in fig. 9, 10, 11 and 12, the vane 132 includes first and second opposing ends 140, 144 and fourth opposing ends 146, the first end 140 being perpendicular to the axis of the impeller 130, the second end being perpendicular to the axis of the impeller 130, the third end 144 being parallel to the axis of the impeller 130, the fourth end 146 being parallel to the axis of the impeller 130, and the third end 144 being located between the fourth end 146 and the axis of the impeller 130.

In this embodiment, the first end 140 is formed with a portion of the recess 138 and the third end 144 is formed with another portion of the recess 138.

In other embodiments, the first end 140 is formed with the recess 138. In other embodiments, the third end 144 is formed with a recess 138.

In this embodiment, a portion of the first end 140 is formed with a portion of the recess 138.

In other embodiments, all of the first ends 140 are formed with a portion of the recess 138.

Example 6:

as shown in fig. 6, 10 and 12, according to an embodiment of the invention, including the features defined in any of the above embodiments, and further: the junction of the first end 140 of the vane 132 and the recess 138 is formed with a rounded corner 148.

In detail, a rounded corner 148 is formed at a connection between the first end 140 of the vane 132 and the recess 138 (e.g., a chamfer), so that smooth transition at the connection between the first end 140 of the vane 132 and the recess 138 is realized, safety and reliability of assembling and disassembling the impeller 130 can be ensured, and operating noise of a product can be reduced. Meanwhile, the structure has the advantages of simple processing technology, convenient operation, high production efficiency and low production cost.

Further, as shown in fig. 9, by reasonably setting the structure of the connection between the first end 140 of the vane 132 and the recess 138 and the relationship between the radius of the rounded corner 148 and the distance from the recess 138 to the end of the flow guiding ring 118 facing the inside of the volute 110, the radius of the rounded corner 148 is smaller than or equal to the distance L from the recess 138 to the end of the flow guiding ring 118 facing the inside of the volute 110, so that the air volume of the product and the running noise of the product are both considered, and the use performance of the product is optimized.

Example 7:

as shown in fig. 1, 4 and 9, the volute 110 includes oppositely disposed first and second sidewall assemblies 112, 114; either one of the first sidewall assembly 112 and the second sidewall assembly 114 includes a sidewall 116 and a baffle ring 118, the baffle ring 118 being disposed on the sidewall 116; wherein, part of the deflector ring 118 protrudes from the outer surface of the sidewall 116.

In detail, the volute 110 has a first sidewall assembly 112 and a second sidewall assembly 114, with the first sidewall assembly 112 and the second sidewall assembly 114 being oppositely and spaced apart. Any one of the first side wall assembly 112 and the second side wall assembly 114 comprises a side wall 116 and a flow guiding ring 118, and the matching structure of the side wall 116 and the flow guiding ring 118 is reasonably arranged, so that part of the flow guiding ring 118 arranged on the side wall 116 protrudes out of the outer surface of the side wall 116, and the structural strength of the first side wall assembly 112 and the second side wall assembly 114 is enhanced, thus being beneficial to reducing the deformation generated when the volute 110 is disassembled and assembled, reducing the possibility that the splicing part of the volute 110 deforms or even misplaces, avoiding the occurrence of the condition that the operation noise of the product is large because the splicing part of the volute 110 deforms, and improving the service performance and market competitiveness of the product.

Specifically, the sidewall 116 and the deflector ring 118 are integrally injection molded.

Further, the inner surface of part of the deflector ring 118 protrudes from the outer surface of the sidewall 116. The gap between part of the outer edge of the vane 132 and the flow guide ring 118 is increased. Because fan 100 during operation, impeller 130 rotates and can arouse the air current disturbance, and then can cause the impact to the internal surface of spiral case 110, the utility model discloses because the clearance between the partial outer fringe of increase blade 132 and the internal surface of water conservancy diversion circle 118, so, can slow down the impact strength of air current to spiral case 110 internal surface, and then can reduce the running noise of product.

In addition, because the gap between part of the outer edge of the blade 132 and the inner surface of the guide ring 118 is increased, the axial length of the impeller 130 can be increased under the condition that the gap between part of the outer edge of the blade 132 and the inner surface of the guide ring 118 is constant, so that the working capacity of the impeller 130 can be increased, the operation rotating speed of the fan 100 can be reduced under the condition that the air volume is constant, and the operation noise of a product can be reduced.

Further, the flow guiding ring 118 includes a first annular flow guiding portion and a second annular flow guiding portion, the first annular flow guiding portion and the second annular flow guiding portion are connected, one end of the first annular flow guiding portion is connected with the side wall 116, the other end of the first annular flow guiding portion extends toward the outside of the scroll casing 110, and the second annular flow guiding portion extends from the other end of the first annular flow guiding portion toward the inside of the scroll casing 110. The thickness of the first annular flow guide part is larger than that of the second annular flow guide part.

Through the thickness relation of the thickness of reasonable setting first annular water conservancy diversion portion and second annular water conservancy diversion portion for the thickness of first annular water conservancy diversion portion is greater than the thickness of second annular water conservancy diversion portion, promptly, does thickening at the root of water conservancy diversion circle 118, with the structural strength of reinforcing first side wall subassembly 112 and second side wall subassembly 114, and then produced deflection when reducing the dismouting of spiral case 110. Meanwhile, the thickness of the second annular flow guide part is thinner relative to that of the first annular flow guide part, namely, the second annular flow guide part is thinned, so that the cooling and shaping speed of the volute 110 after injection molding and demolding can be increased, and further the condition that the volute 110 is cooled, solidified and strained after injection molding and demolding can be prevented.

Example 8:

an embodiment of the second aspect of the present invention provides an air conditioner, comprising a fan 100 as in any one of the embodiments of the first aspect. Therefore, all the advantages of the wind turbine 100 according to any embodiment of the first aspect are not mentioned herein.

The specific embodiment is as follows:

1. the fan 100 includes an impeller 130, and a center disc 134, blades 132 and a frame 136 are disposed on the impeller 130. A first end 140 of the vane 132 is coupled to the rim 136 and a second end of the vane 132 is coupled to the center disk 134. The end of the vane 132 that connects to the rim 136 is provided with a recess 138 (e.g., the recess 138 includes a cut-out) at a location that corresponds to the portion of the inducer 118 that extends into the interior of the volute 110.

2. The recess 138 includes any one or combination of the following: plane, curved and folded surfaces.

3. The recessed portion 138 is configured as an arc surface, the center of the arc surface is located at one end of the flow guiding ring 118 facing the inside of the volute 110, and the distance from the recessed portion 138 to the end of the flow guiding ring 118 facing the inside of the volute 110 is the radius of the arc surface. Wherein the radius of the arc surface is 7 mm.

4. The junction of the recess 138 and the first end 140 of the vane 132 transitions with a rounded corner 148. The radius of the rounded corner 148 is less than or equal to the radius of the arc surface.

The utility model discloses a set up convex incision at blade 132 tip, when impeller 130 axial dimension extended, the clearance between impeller 130 and the water conservancy diversion circle 118 satisfies best design value all the time, has reduced the running noise of air conditioner under the same flow. As shown in fig. 13, the axial length of the impeller without a notch at the end of the blade is 150mm, the minimum clearance between the end of the impeller and the guide ring is 7mm, and the curve of the flow rate and the noise is shown by a dotted line; the end of the vane 132 is provided with a circular arc-shaped cut, the axial length of the impeller 130 is 160mm, the minimum clearance between the end of the impeller 130 and the guide ring 118 is the distance from the circular arc-shaped cut to the end of the guide ring 118 facing the inside of the volute 110, the minimum clearance is 7mm, and the curve of the flow rate and the noise is shown by a solid line. Compared with the prior art, the utility model discloses a fan 100 under the certain condition of the amount of wind, greatly reduced the running noise of product.

In the present application, the term "plurality" means two or more unless expressly defined otherwise. The terms "mounted," "connected," "fixed," and the like are to be construed broadly, and for example, "connected" may be a fixed connection, a removable connection, or an integral connection; "coupled" may be direct or indirect through an intermediary. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the description of the present specification, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. A fan, comprising:

a volute having an opening;

the guide ring is arranged at the opening, and part of the guide ring extends towards the inside of the volute;

the impeller is arranged in the volute and provided with a plurality of blades, and the outer edge of any one of the blades is provided with a concave part;

the part of the guide ring extending into the volute is arranged corresponding to the sunken part.

2. The fan of claim 1,

the recess comprises any one or a combination of the following: a plane, a curved surface and a folded surface;

wherein the depression is depressed toward the flow guide ring away from the volute interior.

3. The fan according to claim 1 or 2,

the recess portion penetrates the blade in a thickness direction of the blade.

4. The fan according to claim 1 or 2,

and the distance from any point on the depressed part to one end of the guide ring facing the inside of the volute is equal.

5. The fan according to claim 1 or 2,

the value range of the distance from any point on the depressed part to one end of the guide ring facing the inside of the volute is as follows: 4mm to 10 mm.

6. The fan according to claim 1 or 2,

an end portion of a side facing the impeller axis is provided with a chamfer configured as at least a part of the recess.

7. The fan of claim 6, wherein the impeller further comprises:

the first ends of the blades are connected with the middle disc;

the frame is opposite to the middle disc and arranged at intervals, the second end of the blade is connected with the frame, and the connecting part of the first end of the blade and the concave part is in smooth transition;

wherein, the frame is located between the central disc and the guide ring.

8. The fan of claim 7,

and a fillet is formed at the joint of the first end of the blade and the concave part.

9. The fan as recited in claim 8,

the radius of the fillet is smaller than or equal to the distance from the depressed part to one end, facing the inside of the volute, of the guide ring.

10. An air conditioner, comprising:

the blower of any one of claims 1-9.

Images