Impeller structure, fan and electric cooker

Abstract

The utility model discloses an impeller structure, a fan and an electric cooker, and the impeller structure comprises a central shaft which extends along the axial direction; the wind shield is arranged at one axial end of the central shaft; the multiple blades are located on the same side of the wind shield, surround the radial outer side of the center shaft and are arranged at intervals, each blade comprises a blade part and a connecting part, the blade parts are connected with the center shaft through the connecting parts, and the blade parts extend away from the wind shield compared with the connecting parts. According to the utility model, by improving the blade structure, the plurality of blades form a structure that the blade part of the outer ring is higher than the connecting part of the inner ring, so that an obvious negative pressure area is formed in the inner ring of the plurality of blades. Thus, when the motor is used for driving the impeller structure to rotate, the air suction amount of the inner ring of the impeller structure is obviously increased, the air outlet amount diffused to the periphery can be increased through the multiple blades, and the heat dissipation and / or heating effect can be obviously improved when the draught fan is applied to the electric cooker.

Description

Technical Field

[0001] The utility model relates to the technical field of cooking appliances, in particular to an impeller structure, a fan and a rice cooker. Background Art

[0002] A rice cooker is a commonly used kitchen appliance that converts electrical energy into heat energy to perform operations such as steaming, boiling, stewing, cooking, and simmering on food materials, which is convenient to use, safe and reliable. Generally, a fan is provided in the rice cooker to supply air for heat dissipation and / or heating. In order to achieve better heat dissipation and / or heating purposes, the fan needs to be able to provide a large air pressure and air volume.

[0003] However, most of the impellers of the existing fans in rice cookers are structured with multiple blades spaced at intervals on the radial outer periphery of the central axis. Although they have the characteristics of simple structure and convenient manufacturing, the air pressure and air volume they can generate are relatively low, which affects the heat dissipation and / or heating effect of the rice cooker. Summary of the Utility Model

[0004] In order to overcome at least one of the above-mentioned defects of the existing technology, the purpose of the utility model is to provide an impeller structure, a fan and a rice cooker. By improving the impeller structure, an obvious negative pressure area is formed in the central area of the impeller, so as to increase the air suction volume of the impeller, and cooperate with the blades to increase the air outlet volume of the impeller, so that the fan can significantly improve the heat dissipation and / or heating effect when applied in the rice cooker.

[0005] The technical solution adopted by the utility model to solve its problems is as follows:

[0006] An impeller structure, comprising:

[0007] A central axis extending axially;

[0008] A wind deflector provided at one end of the central axis in the axial direction;

[0009] Multiple blades located on the same side of the wind deflector, the multiple blades are arranged around the radial outside of the central axis at intervals. The blade includes a blade part and a connecting part. The blade part is connected to the central axis through the connecting part, and the blade part extends farther from the wind deflector than the connecting part.

[0010] Further, the multiple blades are evenly spaced and distributed on the radial outside of the central axis.

[0011] Further, the blade is an arc structure, and the arcs of the multiple blades are the same and are bent in the same direction.

[0012] Further, the central axis includes a concentrically arranged rotating shaft and an outer ring part. The outer ring part surrounds the radial outside of the rotating shaft and is spaced from the rotating shaft, and the connecting part is fixedly connected to the outer ring part;

[0013] In the axial direction of the central axis away from the wind shield, the heights of the connecting portion and the outer ring portion are lower than the heights of the blade portion and the rotating shaft.

[0014] Furthermore, in the axial direction of the central axis away from the wind shield, the heights of the connecting portion and the outer ring portion are equal.

[0015] Furthermore, multiple blades are closely attached to the corresponding end faces of the wind shield, and the central axis, the wind shield and the blades are fixedly connected into an integral impeller structure.

[0016] Furthermore, in the axial direction of the central axis, the projection of the wind shield covers the projections of multiple blades.

[0017] Furthermore, in the axial direction of the central axis, the outer peripheral edge of the projection of the wind shield coincides with the outer peripheral edge of the projections of multiple blades.

[0018] The present utility model also provides a blower, comprising: a motor and the above-mentioned impeller structure, and the output shaft of the motor is fixedly connected to the central axis.

[0019] The present utility model also provides a rice cooker, comprising: a cooker body, an inner pot, an upper cover assembly and the above-mentioned blower, the inner pot is arranged in the cooker body, the upper cover assembly is hinged to the cooker body, the upper cover assembly can be covered on the cooker body to form a cooking cavity between the upper cover assembly and the inner pot, and the blower is arranged in the upper cover assembly and / or the cooker body.

[0020] The beneficial effects of the impeller structure, the blower and the rice cooker provided by the present utility model are as follows:

[0021] By improving the blade structure, the present utility model sets the blade to include a blade portion and a connecting portion. The connecting portion is closer to the central axis than the blade portion, and the blade portion extends away from the wind shield compared with the connecting portion, so that multiple blades form a structure where the outer ring blade portion is higher than the inner ring connecting portion, thereby forming an obvious negative pressure area in the inner ring of multiple blades. In this way, when the impeller structure is driven to rotate by a motor, the air suction volume in the inner ring of the impeller structure is significantly increased, and the air output volume diffused to the surrounding can be increased through multiple blades, so that the blower can significantly improve the heat dissipation and / or heating effect when applied in a rice cooker. Description of the Drawings

[0022] Figure 1 It is a schematic diagram of the impeller structure of Embodiment 1;

[0023] Figure 2 It is a schematic diagram of the structure of the blower of Embodiment 2;

[0024] Figure 3 It is an exploded view of the blower of Embodiment 2;

[0025] Figure 4 It is a schematic diagram of the structure of the rice cooker of Embodiment 3.

[0026] Among them, the meanings of the reference numerals are as follows:

[0027] 1. Central axis; 11. Rotating shaft; 111. Shaft hole; 12. Outer ring part; 2. Baffle; 3. Blade; 31. Blade part; 32. Connecting part; 4. Motor; 41. Motor body; 42. Output shaft; 5. Pot body; 6. Inner pot; 7. Upper cover assembly. Specific embodiments

[0028] For better understanding and implementation, 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.

[0029] In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. It 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.

[0030] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present invention belongs. The terms used in the description of the present invention herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0031] Embodiment 1

[0032] Referring to Figure 1 , this embodiment provides an impeller structure, including a central axis 1, a wind baffle 2 and blades 3. The central axis 1 extends along the axial direction. The wind baffle 2 is arranged at one end of the central axis 1 in the axial direction. A plurality of blades 3 are located on the same side of the wind baffle 2. The plurality of blades 3 are arranged around the radial outside of the central axis 1 at intervals. The blade 3 includes a blade part 31 and a connecting part 32. The blade part 31 is connected to the central axis 1 through the connecting part 32. The blade part 31 extends farther from the wind baffle 2 than the connecting part 32.

[0033] The central axis 1 is a columnar structure, which takes the central axis as the axial center and extends along this central axis. The setting direction of this central axis can be the height direction of the impeller structure. The wind baffle 2 is arranged at one end of the central axis 1 in the axial direction and extends radially outward from the center of one end of the central axis 1 to form a circular plate structure. Based on this structure, the direction in which the central axis 1 extends away from the wind baffle 2 is the height direction.

[0034] A plurality of blades 3 are located on the same side of the wind deflector 2 and are fixedly connected to the central axis 1, so that when the central axis 1 rotates, it can drive the plurality of blades 3 to rotate synchronously. In the radial direction of the central axis 1, the blade 3 includes a blade portion 31 far from the central axis 1 and a connecting portion 32 close to the central axis 1. The height of the connecting portion 32 is lower than the height of the blade portion 31, so that the plurality of blades 3 form a structure where the outer ring blade portion 31 is higher than the inner ring connecting portion 32, thereby forming an obvious negative pressure area in the inner ring of the plurality of blades 3. Thus, when the impeller structure rotates, the air intake volume in the inner ring of the impeller structure is significantly increased. With the setting of the wind deflector 2, the air output volume that diffuses around can be increased through the plurality of blades 3, thereby greatly improving the air volume, air pressure and diffusion uniformity of the air output of the impeller structure.

[0035] The plurality of blades 3 are evenly spaced on the radial outer side of the central axis 1. The distance between any two adjacent blades 3 is equal, so that the air volume inhaled by the negative pressure area can be evenly diffused around through the plurality of blades 3, thereby improving the uniformity of the air output.

[0036] Moreover, the blade 3 is an arc-shaped structure, and the arcs of the plurality of blades 3 are the same and are bent in the same direction. In the radial direction of the central axis 1, the blade 3 is set as an arc-shaped structure, not only with the same bending arc but also all bent in the same arc direction. For example, the plurality of blades 3 are all bent clockwise, or the plurality of blades 3 are all bent counterclockwise. Designing the blade 3 as an arc-shaped structure is more conducive to the flow of air, thereby realizing uniform air output.

[0037] On the basis of the above structure, the central axis 1 includes a rotating shaft 11 and an outer ring portion 12 arranged concentrically. The outer ring portion 12 surrounds the radial outer side of the rotating shaft 11, and the outer ring portion 12 is spaced from the rotating shaft 11. The connecting portion 32 is fixedly connected to the outer ring portion 12. In the axial direction of the central axis 1 away from the wind deflector 2, the heights of the connecting portion 32 and the outer ring portion 12 are lower than the heights of the blade portion 31 and the rotating shaft 11.

[0038] The rotating shaft 11 is the central rotating shaft of the impeller structure. The wind deflector 2 and the plurality of blades 3 are evenly distributed around the rotating shaft 11, and the plurality of blades 3 rotate around the rotating shaft 11. The outer ring portion 12 is concentrically surrounded on the radial outer side of the rotating shaft 11, and there is a space between the two. Combined with the fact that the heights of the outer ring portion 12 and the connecting portion 32 are lower than the heights of the blade portion 31 and the rotating shaft 11, a central negative pressure area is formed between the outer ring portion 12 and the rotating shaft 11, and an inner ring negative pressure area is formed in the connecting portion 32. The height of the central negative pressure area is lower than the height of the inner ring negative pressure area, which is more conducive to improving the negative pressure air intake volume of the impeller structure.

[0039] Moreover, in the axial direction away from the wind deflector 2 of the central axis 1, the heights of the connecting portion 32 and the outer ring portion 12 are level. The air centrifugally diffused from the central negative pressure area can smoothly mix with the air in the inner ring negative pressure area and quickly diffuse around through the blade portion 31, thereby improving the air volume and the uniformity of the air output of the impeller structure.

[0040] In this embodiment, the multiple blades 3 are closely attached to the corresponding end faces of the wind deflector 2, and the central axis 1, the wind deflector 2, and the blades 3 are fixedly connected into an integral impeller structure. The multiple blades 3 are closely connected to the wind deflector 2, preventing air from flowing between the blades 3 and the wind deflector 2, so that the air diffuses around through the spaces between the multiple blades 3 to output air evenly and quickly. At the same time, the setting of this integral structure can improve the installation stability of each component and prevent the blades 3 from loosening after the impeller structure rotates for a long time, which affects the air suction and air output effects.

[0041] In the axial direction of the central axis 1, the projection of the wind deflector 2 covers the projections of the multiple blades 3. The wind deflector 2 can block the air from flowing towards the side of the wind deflector 2, so that the wind inhaled by the negative pressure area can diffuse around through the multiple blades 3 to ensure the air output effect.

[0042] Furthermore, in the axial direction of the central axis 1, the outer peripheral edge of the projection of the wind deflector 2 coincides with the outer peripheral edge of the projections of the multiple blades 3. On the basis of ensuring the air output direction, the edge of the wind deflector 2 can guide the air output at the edge of the blades 3, thereby reducing the amount of air output backflow and the air output resistance, and thus improving the air output effect of the impeller structure.

[0043] Embodiment 2

[0044] Refer to Figure 2 and Figure 3 This embodiment provides a blower, which includes a motor 4 and the impeller structure of Embodiment 1, and the output shaft 42 of the motor 4 is fixedly connected to the central axis 1.

[0045] The motor 4 includes a motor body 41 and an output shaft 42. The output shaft 42 is provided at the output end of the motor body 41 and extends towards the impeller structure. In the impeller structure, a shaft hole 111 adapted to the output shaft 42 is provided in the rotating shaft 11 of the central axis 1, and the opening of the shaft hole 111 is located at one end of the rotating shaft 11 provided with the wind deflector 2.

[0046] After the motor 4 is fixedly connected to the impeller structure, the motor 4 is started to rotate the output shaft 42, thereby driving the impeller structure to rotate synchronously via the rotating shaft 11. During the rotation of the impeller structure, the central negative pressure area between the outer ring portion 12 and the rotating shaft 11 and the inner ring negative pressure area of the connecting portion 32 can significantly increase the air suction volume of the impeller structure. A large amount of inhaled air can be evenly and quickly discharged via the wind deflector 2 and the multiple blades 3 of the arc-shaped structure, and the wind deflector 2 can block the air from flowing towards the motor side to ensure that the air outlet of the impeller structure is evenly diffused around in cooperation with the centrifugal structure, thereby greatly improving the air volume, air pressure and diffusion uniformity of the air outlet of the impeller structure.

[0047] In this way, the fan of this embodiment can rotate clockwise or counterclockwise in a set direction, and this rotation direction can cooperate with the arc bending direction of the blade 3. This fan can be used alone as a fan, exhaust fan, etc. Of course, this fan can also be used as a component of other devices, and can be used for cooling functional devices, or for electric ovens, air fryers, air conditioners, rice cookers, etc., to cooperate with heating devices to generate hot air and cold air.

[0048] Embodiment 3

[0049] Refer to Figure 4 , this embodiment provides a rice cooker, including: a cooker body 5, an inner pot 6, an upper cover assembly 7 and the fan of Embodiment 2. The inner pot 6 is arranged in the cooker body 5, the upper cover assembly 7 is hinged to the cooker body 5, and the upper cover assembly 7 can be covered on the cooker body 5 to form a cooking cavity between the upper cover assembly 7 and the inner pot 6. The fan is arranged in the upper cover assembly 7 and / or the cooker body 5.

[0050] The upper cover assembly 7 realizes the rotational connection with the cooker body 5 through a hinge structure, so as to be able to cover the upper cover assembly 7 on the cooker body 5 or open the cooking cavity.

[0051] Inside the rice cooker, generally a heating device is arranged in the upper cover assembly 7 to uniformly heat the inner cover, so as to prevent the steam in the cooking cavity from flowing upward to the inner cover and generating condensed water when it meets cold. This heating device can be used in cooperation with the fan of Embodiment 2 to increase the air flow, thereby improving the heating uniformity and heating rate. At the same time, a fan can also be arranged in the upper cover assembly 7 for heat dissipation purposes. In addition, generally a heating element such as a heating wire is arranged at the bottom of the cooker body 5 to heat the food in the cooking cavity, and this heating element can be used in cooperation with the fan of Embodiment 2 to increase the air fluidity and uniformity, so that the food is heated evenly.

[0052] In this way, the fan of Embodiment 2 with the impeller structure of Embodiment 1 applied in the rice cooker of this embodiment can significantly improve the heat dissipation and / or heating effect of the rice cooker.

[0053] The technical means disclosed by the solution of the present utility model are not limited to those disclosed in the above embodiments, but also include technical solutions composed of any combination of the above technical features. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present utility model, several improvements and modifications can be made, and these improvements and modifications are also regarded as the protection scope of the present utility model.

Claims

1. An impeller structure, characterized in that, Comprising: A central shaft (1), the central shaft (1) extending axially; A wind deflector (2), the wind deflector (2) being provided at one end of the central shaft (1) in the axial direction; A plurality of blades (3), the plurality of blades (3) being located on the same side of the wind deflector (2), the plurality of blades (3) surrounding the radial outside of the central shaft (1) and being spaced apart, the blade (3) comprising a blade portion (31) and a connecting portion (32), the blade portion (31) being connected to the central shaft (1) through the connecting portion (32), and the blade portion (31) extending farther from the wind deflector (2) than the connecting portion (32).

2. The impeller structure according to claim 1, characterized in that: The plurality of blades (3) are evenly spaced and distributed on the radial outside of the central shaft (1).

3. The impeller structure according to claim 1, characterized in that: The blade (3) is of an arc structure, and the arcs of the plurality of blades (3) are the same and are bent in the same direction.

4. The impeller structure according to any one of claims 1-3, characterized in that: The central shaft (1) comprises a rotating shaft (11) and an outer ring portion (12) arranged concentrically, the outer ring portion (12) surrounding the radial outside of the rotating shaft (11), and the outer ring portion (12) being spaced apart from the rotating shaft (11), and the connecting portion (32) being fixedly connected to the outer ring portion (12); In the axial direction of the central shaft (1) away from the wind deflector (2), the height of the connecting portion (32) and the outer ring portion (12) is lower than the height of the blade portion (31) and the rotating shaft (11).

5. The impeller structure according to claim 4, characterized in that: In the axial direction of the central shaft (1) away from the wind deflector (2), the height of the connecting portion (32) and the outer ring portion (12) is level.

6. The impeller structure according to any one of claims 1-3, characterized in that: The plurality of blades (3) are in close contact with the corresponding end face of the wind deflector (2), and the central shaft (1), the wind deflector (2) and the blades (3) are fixedly connected into an integral structure of the impeller structure.

7. The impeller structure according to any one of claims 1-3, characterized in that: In the axial direction of the central shaft (1), the projection of the wind deflector (2) covers the projections of the plurality of blades (3).

8. The impeller structure according to claim 7, wherein: In the axial direction of the central shaft (1), the outer peripheral edge of the projection of the wind deflector (2) coincides with the outer peripheral edge of the projections of the plurality of blades (3).

9. A blower, characterized in that, Comprising: A motor (4) and the impeller structure according to any one of claims 1-8, the output shaft (42) of the motor (4) being fixedly connected to the central shaft (1).

10. A rice cooker, characterized in that, Comprising: A pot body (5), an inner pot (6), an upper cover assembly (7) and the blower according to claim 9, the inner pot (6) being provided in the pot body (5), the upper cover assembly (7) being hinged to the pot body (5), the upper cover assembly (7) being capable of covering the pot body (5) to form a cooking cavity between the upper cover assembly (7) and the inner pot (6), and the blower being provided in the upper cover assembly (7) and / or the pot body (5).

Images