CN207437440U - Impeller and with its wind turbine, cooking apparatus - Google Patents

Abstract

The utility model discloses a kind of impeller and there is its wind turbine, cooking apparatus, the impeller includes：Rotatable wheel hub and multiple blades, multiple blades are located at along circumferentially-spaced turn up the soil of the wheel hub on the wheel hub, wherein, each blade is divided into outer Forword vane area along its length, the interior Forword vane area being connected with the wheel hub and the backward inclined blade area being connected between the outer Forword vane area and the interior Forword vane area, extending direction of the outlet air side of the blade in the interior Forword vane area and the outer Forword vane area is consistent with the direction of rotation of the wheel hub, extending direction of the outlet air side of the blade in the rear to vane region is opposite with the direction of rotation of the wheel hub.By setting the vane region of different extending directions on each blade, since the design feature in different leaves area is different, work noise is reduced on the basis of ensureing that impeller has higher air flow for impeller according to the present utility model.

Description

Impeller and with its wind turbine, cooking apparatus

Technical field

The utility model is related to kitchen appliance technical fields, more particularly to a kind of impeller and have its wind turbine, culinary art Utensil.

Background technology

Such as cooking apparatus of electromagnetic oven, IH electric cookers etc, for improving heat radiation efficiency, sets wind in cooking apparatus Machine, the impeller air flow of cooking apparatus inner blower is smaller in correlation technique, and operating noise is larger, seriously affects user's Use environment.

Utility model content

The utility model is intended at least solve one of technical problem in the prior art.

For this purpose, the utility model proposes a kind of impellers, the impeller is higher to air mechanical efficiency during the work time, has Beneficial to promotion air mass flow, and noise is smaller.

The utility model also proposes a kind of wind turbine with above-mentioned impeller.

The utility model also proposes a kind of cooking apparatus with above-mentioned wind turbine.

According to the impeller of the utility model first aspect, including：Rotatable wheel hub and multiple blades, multiple blades Be located at along circumferentially-spaced turn up the soil of the wheel hub on the wheel hub, wherein, each blade be divided into along its length it is outer before To vane region and backward inclined blade area, the extending direction and the wheel hub of the outlet air side of the blade in the outer Forword vane area Direction of rotation it is consistent, the outlet air side of the blade in the rear to vane region extending direction and the wheel hub rotation side To opposite.

Impeller according to the present utility model, by setting the vane region of different extending directions on each blade, due to not It is different with the design feature of vane region, the backward inclined blade area air stream for being conducive to promote impeller higher to the mechanical efficiency of air-flow Amount, outer Forword vane area is connected to the work noise that entire impeller is advantageously reduced on the outside of backward inclined blade area, is ensureing as a result, Impeller reduces work noise on the basis of having higher air flow.

According to the impeller of the utility model one embodiment, the inlet side of the blade along with air side along in the wheel hub Circumferential direction on offset distance gradually increase from the inside to the outside along the radial direction of the wheel hub.Due to impeller when rotated, the line of blade Speed gradually increases along in the radially outward direction of wheel hub, by the inlet side edge and the outlet air that reduce blade adjacent hub one end Side can increase one end of blade connection wheel hub compared with the inclination angle of wheel hub axial direction along the offset distance in the circumferential direction of wheel hub Degree promotes mechanical efficiency of the one end to air-flow of blade adjacent hub, so as to ensure the air balance in impeller cross section.

According to the impeller of the utility model one embodiment, the air-intake side positioned at the part in the backward inclined blade area Extending direction it is opposite with the direction of rotation of the wheel hub.Be conducive to do effect to air-flow when further promoting impeller rotation Rate, and then promote the air mass flow of impeller.

Optionally, it is described for being located at for the air-intake side in the plane perpendicular to the central axis of the wheel hub Between the line at any point in the projection of the part in backward inclined blade area, the tangent line of the point and the center of the point and the wheel hub Angle is 0-60 °.

Further, in the plane perpendicular to the central axis of the wheel hub, it is located at institute for the air-intake side Any point in the projection of the part in backward inclined blade area is stated, between the tangent line of the point and the line at the center of the point and the wheel hub Angle be 20 ° -30 °.

According to the impeller of the utility model one embodiment, the air-intake side positioned at the portion in the outer Forword vane area The extending direction divided is consistent with the direction of rotation of the wheel hub.Be conducive to further reduce work noise during impeller rotation.

Optionally, it is described for being located at for the air-intake side in the plane perpendicular to the central axis of the wheel hub Between the line at any point in the projection of the part in outer Forword vane area, the tangent line of the point and the center of the point and the wheel hub Angle be 0-45 °.

Further, in the plane perpendicular to the central axis of the wheel hub, it is located at institute for the air-intake side The line at the center of any point in the projection of the part in Shu Wai Forword vanes area, the tangent line of the point and the point and the wheel hub it Between angle be 20 ° -30 °.

According to the impeller of the utility model one embodiment, each blade further includes：Interior Forword vane area, it is described interior Forword vane area is connected between the wheel hub and the backward inclined blade area, and the air-intake side is located at the interior Forword vane The extending direction of the part in area is consistent with the direction of rotation of the wheel hub.So as to reduce impeller rotation Shi Nei Forword vanes area Work noise.

Optionally, it is described for being located at for the air-intake side in the plane perpendicular to the central axis of the wheel hub Between the line at any point in the projection of the part in interior Forword vane area, the tangent line of the point and the center of the point and the wheel hub Angle be 0-30 °.

According to the impeller of the utility model one embodiment, the number of the blade is the prime number more than 3 and less than 29.By This can prevent blade resonance to be conducive to be promoted the work efficiency of impeller.

According to the wind turbine of the utility model second aspect, including the impeller according to above-described embodiment.

According to the cooking apparatus of the utility model third aspect, including the wind turbine according to above-described embodiment.

The additional aspect and advantage of the utility model will be set forth in part in the description, partly will be from following description In become apparent or recognized by the practice of the utility model.

Description of the drawings

The above-mentioned and/or additional aspect and advantage of the utility model will in the description from combination accompanying drawings below to embodiment Become apparent and be readily appreciated that, wherein：

Fig. 1 is the explosive view according to the wind turbine of the utility model embodiment；

Fig. 2 is the structure diagram according to the impeller of the utility model embodiment；

Fig. 3 is the top view of Fig. 2 structures；

Fig. 4 is the partial structural diagram according to the impeller of the utility model embodiment；

Fig. 5 is the top view of structure in Fig. 4；

Fig. 6 is the structure diagram of another embodiment according to the present utility model；

Fig. 7 is the top view of structure in Fig. 6；

Fig. 8 is the structure diagram of another embodiment according to the present utility model；

Fig. 9 is the top view of structure in Fig. 8.

Reference numeral：

100：Wind turbine；

10：Impeller；11：Wheel hub；12：Blade；121：Outer Forword vane area；122：Interior Forword vane area；

123：Backward inclined blade area；124：Air-intake side；125：Outlet air side；

20：Stent；21：Bearing；22：Shaft；30：Stator module；40：Rotor assembly.

Specific embodiment

The embodiment of the utility model is described below in detail, the example of the embodiment is shown in the drawings, wherein from beginning Same or similar element is represented to same or similar label eventually or there is same or like element.Below by ginseng The embodiment for examining attached drawing description is exemplary, and is only used for explaining the utility model, and it is not intended that the utility model Limitation.

In the description of the utility model, it is to be understood that term " " center ", " length ", " thickness ", " on ", " under ", The orientation of the instructions such as " level ", " top ", " bottom " " interior ", " outer ", " clockwise ", " counterclockwise ", " axial direction ", " radial direction ", " circumferential direction " Or position relationship is based on orientation shown in the drawings or position relationship, is for only for ease of description the utility model and simplification is retouched It states rather than indicates or imply signified device or element must have specific orientation, with specific azimuth configuration and operation, Therefore it is not intended that limitation to the utility model.In addition, define " first ", the feature of " second " can be expressed or hidden Include one or more this feature containing ground.In the description of the utility model, unless otherwise indicated, " multiple " are meant that Two or more.

, it is necessary to which explanation, unless otherwise clearly defined and limited, term " are pacified in the description of the utility model Dress ", " connected ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected or integrally Connection；Can be mechanical connection or electrical connection；It can be directly connected, can also be indirectly connected by intermediary, It can be the connection inside two elements.For the ordinary skill in the art, can above-mentioned art be understood with concrete condition Concrete meaning of the language in the utility model.

Below with reference to Fig. 1-Fig. 9 descriptions according to the cooking apparatus of the utility model embodiment.

According to the cooking apparatus of the utility model one embodiment, it can be electromagnetic oven or IH electric cookers etc., wrap It includes：Housing (not shown), heating structure (not shown) and wind turbine 100 limit installation cavity, heating structure and wind turbine in casing 100 are mounted in installation cavity, and housing has the air outlet that neighbouring wind turbine 100 is arranged.

As shown in Figure 1, wind turbine 100 includes：Stent 20, impeller 10, stator module 30 and rotor assembly 40, rotor assembly 40 It is connected with impeller 10, stator module 30 is connected with stent 20, and stent 20 is equipped with bearing 21, week of the stator module 30 along bearing 21 To extension, and stator module 30 and the outer ring of bearing 21 are fixedly connected on stent 20, and rotor assembly 40 is formed as along stator The round ring magnet of the circumferentially extending of component 30, permanent magnet are connected with impeller 10, and impeller 10 connects bearing by shaft 22 21 inner ring is connected, and is achieved in rotation of the impeller 10 compared with stent 20, and stator module 30, which powers on, generates field drives Rotor assembly 40 and impeller 10 rotate.

First, impeller 10 of the description according to the utility model embodiment is described with reference to the accompanying drawings.

As shown in figures 2 and 5, one embodiment according to the present utility model, impeller 10 include：Wheel hub 11 and multiple blades 12, wheel hub 11 is rotatably connected on stent 20, and is defined in wheel hub 11 towards 20 open rotor installation cavity of stent, is turned Sub-component 40 is mounted in rotor installation cavity, and the circumferential uniform intervals of multiple blades 12 along wheel hub 11, which are turned up the soil, is located at the outer of wheel hub 11 On peripheral wall, and extending radially outwardly along wheel hub 11, in the direction of rotation of impeller 10 (counter clockwise direction as shown in Figure 4), The forward edge of each blade 12 is the air-intake side 124 of the blade 12, and the posterior edges of each blade 12 are the blade 12 Outlet air side 125, that is to say, that air-flow enters impeller 10 by the forward edge of blade 12, then blade 12 does work to air-flow Impeller 10 is flowed out by outlet air side 125.

Wherein, each blade 12 includes：Outer Forword vane area 121 and backward inclined blade area 123, backward inclined blade area 123 and wheel Hub 11 is connected, and outer Forword vane area 121 is connected with backward inclined blade area 123, that is to say, that in the radially outward direction of wheel hub 11 On, backward inclined blade area 123 and outer Forword vane area 121 arrange successively, and outer Forword vane area 121 is forward-curved blade, backward Vane region 123 is backward bent vane, and the centre position of outer Forword vane area 121 and backward inclined blade area 123 in the direction of the width It raises up, the lower surface in outer Forword vane area 121 and backward inclined blade area 123 raises up, outer Forword vane area 121 and backward The upper surface of vane region 123 also raises up, in 10 rotary course of impeller, outer Forword vane area 121 and backward inclined blade area 123 The sunk area of lower surface can promote outer Forword vane area 121 and backward inclined blade area 123 to do work air-flow, can promote impeller The functioning efficiency of 10 pairs of air-flows, and then the distinguished and admirable flux of wind turbine 100 is improved, the heat dissipation effect of cooking apparatus can be promoted.

Specifically, as shown in figure 5, the outlet air side 125 of blade 12 outer Forword vane area 121 extending direction and wheel The direction of rotation of hub 11 is consistent, and the outlet air side 125 of blade 12 is in the extending direction in backward inclined blade area 123 and the rotation of wheel hub 11 Direction is on the contrary, in the direction of rotation of impeller 10 (counter clockwise direction as shown in Figure 5), the back side edge in outer Forword vane area 121 Edge extends in the counterclockwise direction, and the posterior edges in backward inclined blade area 123 extend along clockwise direction.

As a result, according to the impeller 10 of the utility model embodiment, by setting different extending directions on each blade 12 12nd area of blade, since the design feature in 12nd area of different leaves is different, backward inclined blade area 123 is higher to the mechanical efficiency of air-flow to be had Beneficial to the air mass flow for promoting impeller 10, the outside that outer Forword vane area 121 is connected to backward inclined blade area 123 advantageously reduces whole The work noise of a impeller 10 reduces work noise on the basis of ensureing that impeller 10 has higher air flow as a result,.

According to the wind turbine 100 and cooking apparatus of the utility model embodiment, by using the impeller 10 of above-described embodiment, no The air mass flow of wind turbine 100 can be only promoted, and then promotes the heat dissipation effect of cooking apparatus, moreover it is possible to reduce wind turbine 100 and culinary art The work noise of utensil provides a comfortable use environment to the user.

As shown in figure 4, in the present embodiment, the inlet side edge and air side edge of blade 12 are inclined in the circumferential direction of wheel hub 11 The radial direction for moving distance along wheel hub 11 gradually subtracts greatly from the inside to the outside, specifically, on the direction of rotation of blade 12, each blade 12 Front and rear both sides there is certain offset, the offset on the radial direction direction from inside to outside of wheel hub 11 between reduce, also It is to say, the region more remote apart from wheel hub 11, blade 12 is bigger compared with the angle that 11 central axis of wheel hub reverses, i.e. blade 12 Both sides line and the angle of 11 central axis of wheel hub are bigger, the region nearer apart from wheel hub 11,12 both sides line of blade and wheel hub The angle of 11 central axis is smaller.

Since closer to the region of wheel hub 11, the linear velocity of blade 12 is smaller, reduces the offset distance on 12 two sides edge of blade From 12 both sides line of blade and the angle of 11 central axis of wheel hub are smaller, directional velocity and wheel hub 11 when air-flow flows out blade 12 The angle of central axis is smaller, so as to promote the air velocity at 12 middle part of blade, region line of the blade 12 away from wheel hub 11 Speed is larger, the appropriate offset distance for increasing by 12 two sides edge of blade, so when increasing air-flow outflow blade 12 directional velocity with The angle of 11 central axis of wheel hub thus, it is possible to ensure in 11 central axial direction of wheel hub, is prevented because of 12 different zones of blade Airflow velocity have big difference and influence distinguished and admirable stability, so as to promote the whole distinguished and admirable stability of blade 12, noise reduction.

As shown in figure 5, one embodiment according to the present utility model, air-intake side 124 is located at backward inclined blade area 123 Partial extending direction is opposite with the direction of rotation of wheel hub 11, that is to say, that (as shown in Figure 5 in the direction of rotation of wheel hub 11 On counterclockwise), the extending direction of the forward edge in backward inclined blade area 123 is with the direction of rotation of wheel hub 11 on the contrary, i.e. backward The forward edge of vane region 123 extends along clockwise direction.

Wherein, the equal wheel hub 11 of the extending direction of the both sides of the edge in backward inclined blade area 123 direction of rotation on the contrary, thus, it is possible to Mechanical efficiency of the backward inclined blade area 123 to air-flow is further promoted, so as to promote the air mass flow by backward inclined blade area 123, Be conducive to be promoted the air mass flow of wind turbine 100, and then promote the heat dissipation effect of cooking apparatus.

As shown in figure 5, an alternative embodiment according to the present utility model, in the flat of the central axis perpendicular to wheel hub 11 In face, for any point in the projection of the part in backward inclined blade area 123 of air-intake side 124, the tangent line of the point is with being somebody's turn to do Angle between the line at the center of point and wheel hub 11 is 0-60 °, that is to say, that on the direction of rotation of impeller 10, backward leaf The forward edge of section 123 projects the curve of formation in the plane perpendicular to the central axis of wheel hub 11, arbitrary on the curve The angle between tangent line and process 11 line of centres of the point and wheel hub at a little is 0-60 °, i.e., angle 1 as shown in Figure 5 is 0-60°。

The blade 12 of said structure, blade 12 and the frictional resistance of air-flow are smaller, the acting of 123 impact air-flow of backward inclined blade area Efficiency is higher, and it is speed to be conducive to promote air-flow outflow impeller 10, and then improves the flow of air draught.

Further, in the plane perpendicular to the central axis of wheel hub 11, it is located at backward leaf for air-intake side 124 Angle between the line at any point in the projection of the part of section 123, the tangent line of the point and the center of the point and wheel hub 11 For 20 ° -30 °, that is to say, that on the direction of rotation of impeller 10, the forward edge in backward inclined blade area 123 is perpendicular to wheel hub 11 Central axis plane in the curve that is formed of projection, tangent line on the curve at any point with by the point in wheel hub 11 Angle between heart line is 20 ° -30 °, i.e., angle 1 as shown in Figure 5 is 20 ° -30 °.

As a result, by further limiting angle in Fig. 51, the front side of backward inclined blade area 123 can be promoted (as shown in Figure 5 The smoothness of forward edge on counterclockwise), can further reduce blade 12 and the frictional resistance of air-flow is smaller, carry 123 impact air-flow mechanical efficiency of backward inclined blade area is risen, is conducive to further be promoted the flow of air draught.

As shown in figure 5, in the present embodiment, air-intake side 124 positioned at the extension side of the part in outer Forword vane area 121 To consistent with the direction of rotation of wheel hub 11, that is to say, that in the direction of rotation of wheel hub 11 (counter clockwise direction as shown in Figure 5) On, the extending direction of the forward edge in outer Forword vane area 121 is identical with the direction of rotation of wheel hub 11, Ji Wai Forword vanes area 121 forward edge extends in the counterclockwise direction.

Wherein, the direction of rotation of the equal wheel hub 11 of the extending direction of the both sides of the edge in outer Forword vane area 121 is identical, air-flow stream Direction when going out impeller 10 is substantially consistent with the direction of blade 12, and thus, it is possible to further reduce by 12 impinging air of blade when generates Noise, and 123 impact air-flow of backward inclined blade area causes a part of air-flow to pass through outer 121 posterior edges of Forword vane area or remote Edge outflow from 11 one side of wheel hub advantageously reduces the work noise of impeller 10.

Optionally, as shown in figure 5, in the plane perpendicular to the central axis of wheel hub 11, for the position of air-intake side 124 Any point in the projection of the part in outer Forword vane area 121, the tangent line of the point and the point and the line at the center of wheel hub 11 Between angle be 0-45 °, that is to say, that on the direction of rotation of impeller 10, the forward edge in outer Forword vane area 121 is being hung down Directly in the tangent line on the curve that formation is projected in the plane of the central axis of wheel hub 11, the curve at any point with passing through the point Angle between 11 line of centres of wheel hub is 0-45 °, i.e., angle 2 as shown in Figure 5 is 0-45 °.

The blade 12 of said structure, speed and the direction of blade 12 when air-flow flows out blade 12 are closer to, can drop Collision and friction between low-flow and blade 12, and then air-flow can be reduced and pass through the noise generated during impeller 10.

Further, as shown in figure 5, in the plane perpendicular to the central axis of wheel hub 11, for air-intake side 124 Any point in the projection of the part in outer Forword vane area 121, the tangent line of the point and the point and the company at the center of wheel hub 11 Angle between line is 20 ° -30 °, that is to say, that on the direction of rotation of impeller 10, the forward edge in outer Forword vane area 121 The curve of formation is projected in the plane perpendicular to the central axis of wheel hub 11, tangent line and process on the curve at any point Angle between 11 line of centres of the point and wheel hub is 20 ° -30 °, i.e., angle 2 as shown in Figure 5 is 20 ° -30 °.

As a result, by further limiting angle in Fig. 52, it can further promote outer 121 front side of Forword vane area (such as Counter clockwise direction shown in Fig. 5) on forward edge smoothness, so as to further alleviate outer Forword vane area 121 with Friction between air is conducive to further reduce noise when air-flow passes through impeller 10.

As shown in figure 5, in the present embodiment, each blade 12 further includes：Interior Forword vane area 122, interior Forword vane area 122 are connected between wheel hub 11 and backward inclined blade area 123, the prolonging positioned at the part in interior Forword vane area 122 of air-intake side 124 Stretch that direction is consistent with the direction of rotation of wheel hub 11, it is similar with the structure in outer Forword vane area 121, in the direction of rotation of wheel hub 11 In (counter clockwise direction as shown in Figure 5), the extending direction of the forward edge in interior Forword vane area 122 and the rotation side of wheel hub 11 To identical, the forward edge in Ji Nei Forword vanes area 122 extends in the counterclockwise direction.

As a result, using interior Forword vane area 122 connection wheel hub 11 and backward inclined blade area 123, wheel hub 11 can be not only promoted With the connection connective stability in backward inclined blade area 123, and be conducive to be promoted the linear velocity in backward inclined blade area 123, and then can be with Efficiency of the backward inclined blade area 123 to distinguished and admirable acting is promoted, furthermore, the extending direction of the both sides of the edge in interior Forword vane area 122 is equal The direction of rotation of wheel hub 11 is identical, and the work that can also reduce by 10 central area of the impeller i.e. radially inner side region of blade 12 is made an uproar Sound.

Further, as shown in figure 5, in the plane perpendicular to the central axis of wheel hub 11, for air-intake side 124 Any point in the projection of the part in interior Forword vane area 122, the tangent line of the point and the point and the company at the center of wheel hub 11 Angle between line is 0-30 °, that is to say, that in the direction of rotation of impeller 10 (counter clockwise direction as shown in Figure 5), before interior The curve of formation is projected in the plane perpendicular to the central axis of wheel hub 11 to the forward edge of vane region 122, on the curve The angle between tangent line and process 11 line of centres of the point and wheel hub at any point is 0-30 °, i.e., angle as shown in Figure 5 3 be 0-30 °.

Since interior Forword vane area 122 is relatively near apart from wheel hub 11, i.e., linear velocity is smaller, and to the mechanical efficiency of air-flow compared with It is low, therefore the interior Forword vane area 122 of said structure advantageously reduces noise when interior Forword vane area 122 works, and also it is favourable In development length of the Forword vane area 122 in wheel hub 11 in the radial direction in reduction, so as to improve backward inclined blade area 123 The development length of wheel hub 11 in the radial direction, backward inclined blade area 123 are higher to air-flow mechanical efficiency, are conducive to promote 10 work of impeller Whole efficiency when making.

As Figure 6-9, one embodiment according to the present utility model, the number of blade 12 is more than 3 and less than 29 Prime number, wherein, the very few work efficiency of number of blade 12 is relatively low, and air mass flow is smaller, and 12 quantity of blade is excessive, not only increases The production cost of impeller 10, and the excessive work efficiency for influencing wind turbine 100 of 10 weight of impeller, furthermore, blade 12 quantity mistake Greatly, the gap between adjacent blades 12 is smaller, is unfavorable for air-flow by the way that the number of blade 12 is set to prime number, is conducive to be promoted Mutual independence between blade 12 prevents that resonance occurs when blade 12 from working influences the work efficiency of impeller 10.

A specific embodiment according to the utility model embodiment is specifically described with reference to the accompanying drawings.

According to the cooking apparatus of the utility model embodiment, including：Housing, heating structure and wind turbine 100, wind turbine 100 wrap It includes：Stent 20, impeller 10, stator module 30 and rotor assembly 40, rotor assembly 40 are connected with impeller 10, stator module 30 and branch Frame 20 is connected, impeller 10 by shaft 22 with stent 20 is rotatable is connected, stator module 30 powers on generation field drives turn Sub-component 40 and impeller 10 rotate.

As shown in figures 2 and 5, impeller 10 includes：Rotatable wheel hub 11 and 7 blades, 12,7 blades 12 are along wheel hub 11 Circumferential uniform intervals, which are turned up the soil, to be located on the periphery wall of wheel hub 11, and extending radially outwardly along wheel hub 11, the inlet side of blade 12 Gradually increase from the inside to the outside along the radial direction of wheel hub 11 along the offset distance in the circumferential direction of wheel hub 11 along with air side, each blade 12 include：Outer Forword vane area 121, interior Forword vane area 122 and backward inclined blade area 123, wheel hub 11 radial direction from the inside to the outside Direction on, interior Forword vane area 122, backward inclined blade area 123 and outer Forword vane area 121 arrange successively, and interior Forword vane Area 122 and outer Forword vane area 121 are forward-curved blade, and backward inclined blade area 123 is backward bent vane.

Rotation of the extending direction of the both sides of the edge in interior Forword vane area 122 and outer Forword vane area 121 with wheel hub 11 Direction is consistent, and the extending direction of 123 both sides of the edge of backward inclined blade area is with the direction of rotation of wheel hub 11 on the contrary, perpendicular to wheel hub 11 Central axis plane in, for the part for being located at backward inclined blade area 123 and outer Forword vane area 121 of air-intake side 124 Projection on any point, the angle between the tangent line of the point and the line at the center of the point and wheel hub 11 is 20 ° -30 °, for Any point in the projection of the part in interior Forword vane area 122 of air-intake side 124, the tangent line of the point and the point and wheel hub Angle between the line at 11 center is 0-30 °.

According to other compositions of the cooking apparatus of the utility model embodiment and operate for ordinary skill people All it is known for member, is not detailed herein.

In the description of this specification, reference term " one embodiment ", " some embodiments ", " illustrative examples ", The description of " example ", " specific example " or " some examples " etc. means to combine specific features, the knot that the embodiment or example describe Structure, material or feature are contained at least one embodiment or example of the utility model.In the present specification, to above-mentioned art The schematic representation of language may not refer to the same embodiment or example.Moreover, description specific features, structure, material or Person's feature can in an appropriate manner combine in any one or more embodiments or example.

While there has been shown and described that the embodiment of the utility model, it will be understood by those skilled in the art that： In the case where not departing from the principle and objective of the utility model can these embodiments be carried out with a variety of variations, modification, replaced And modification, the scope of the utility model are limited by claim and its equivalent.

Claims (13)

1. a kind of impeller, which is characterized in that including：

Rotatable wheel hub；

Multiple blades, multiple blades are located at along circumferentially-spaced turn up the soil of the wheel hub on the wheel hub；

Wherein, each blade is divided into outer Forword vane area and backward inclined blade area, the outlet air of the blade along its length Extending direction of the side in the outer Forword vane area is consistent with the direction of rotation of the wheel hub, and the outlet air side of the blade exists The extending direction in the backward inclined blade area is opposite with the direction of rotation of the wheel hub.

2. impeller according to claim 1, which is characterized in that the air-intake side of the blade is with outlet air side in the wheel Offset distance in the circumferential direction of hub gradually increases from the inside to the outside along the radial direction of the wheel hub.

3. impeller according to claim 1, which is characterized in that the air-intake side of the blade is located at the backward inclined blade area Part extending direction it is opposite with the direction of rotation of the wheel hub.

4. impeller according to claim 3, which is characterized in that in the plane perpendicular to the central axis of the wheel hub, For any point in the projection of the part in the backward inclined blade area of the air-intake side, the tangent line of the point and the point and Angle between the line at the center of the wheel hub is 0-60 °.

5. impeller according to claim 4, which is characterized in that in the plane perpendicular to the central axis of the wheel hub, For any point in the projection of the part in the backward inclined blade area of the air-intake side, the tangent line of the point and the point and Angle between the line at the center of the wheel hub is 20 ° -30 °.

6. impeller according to claim 1, which is characterized in that the air-intake side of the blade is located at the outer Forword vane The extending direction of the part in area is consistent with the direction of rotation of the wheel hub.

7. impeller according to claim 6, which is characterized in that in the plane perpendicular to the central axis of the wheel hub, For any point in the projection of the part in the outer Forword vane area of the air-intake side, the tangent line of the point and the point Angle between the line at the center of the wheel hub is 0-45 °.

8. impeller according to claim 7, which is characterized in that in the plane perpendicular to the central axis of the wheel hub, For any point in the projection of the part in the outer Forword vane area of the air-intake side, the tangent line of the point and the point Angle between the line at the center of the wheel hub is 20 ° -30 °.

9. impeller according to claim 1, which is characterized in that each blade further includes：Interior Forword vane area, it is described Interior Forword vane area is connected between the wheel hub and the backward inclined blade area, the air-intake side of the blade be located at it is described it is interior before Extending direction to the part of vane region is consistent with the direction of rotation of the wheel hub.

10. impeller according to claim 9, which is characterized in that in the plane perpendicular to the central axis of the wheel hub, For any point in the projection of the part in the interior Forword vane area of the air-intake side, the tangent line of the point and the point Angle between the line at the center of the wheel hub is 0-30 °.

11. impeller according to claim 1, which is characterized in that the number of the blade is the matter more than 3 and less than 29 Number.

12. a kind of wind turbine, which is characterized in that including according to claim 1-11 any one of them impellers.

13. a kind of cooking apparatus, which is characterized in that including wind turbine according to claim 12.