Flow guiding structure and food processor

Abstract

The present invention discloses a flow guiding structure and a food processor. The food processor comprises a cup body and a flow guiding structure. The flow guiding structure comprises a bottom plate; and at least two guide vanes. The guide vanes are arranged on the bottom plate. The guide vanes are provided with flow guiding surfaces. The flow guiding surfaces are used to guide the fluid from the center of the bottom plate to the edge of the bottom plate, or to guide the fluid from the edge of the bottom plate to the center of the bottom plate. A flow guiding channel is formed between adjacent guide vanes. A guide vane is added to the bottom of the cup body. The flow state near the blade is controlled by the guide vane so that the fluid can flow radially, the circumferential flow velocity of the fluid is reduced, and the sound radiation of the fluid near the bottom of the cup is controlled, thereby reducing the whipping noise.

Description

Technical Field

[0001] The present invention relates to the field of household electrical appliances, and in particular to a flow guiding structure and a food processor. Background Art

[0002] When existing food processors such as wall breakers are in operation, the high-speed rotation of the blades will generate whipping noise caused by cavitation, whipping and vortex systems, and whipping noise is usually the main noise generated by the entire food processor. Among existing products, taking wall breakers as an example, the noise sound power value is as high as nearly 90dB, and such noise has had a great impact on people's living comfort and health. Summary of the invention

[0003] The purpose of the present invention is to solve at least one of the technical problems existing in the prior art and to provide a flow guide structure and a food processor that can effectively reduce noise.

[0004] According to a first aspect of the present invention, there is provided a guide structure, comprising: a base plate and at least two guide vanes, wherein the guide vanes are arranged on the base plate, and the guide vanes are provided with guide surfaces, wherein the guide surfaces are used to guide the fluid from the center of the base plate to the edge of the base plate, or to guide the fluid from the edge of the base plate to the center of the base plate, and guide channels are formed between adjacent guide vanes.

[0005] Beneficial effect: Add guide vanes at the bottom of the cup body to control the flow state near the blades, so that the fluid can flow radially, reduce the circumferential flow velocity of the fluid, control the sound radiation of the fluid near the bottom of the cup, and thus reduce the whipping noise.

[0006] According to the guide structure described in the first aspect of the present invention, the guide surface is perpendicular to the bottom plate.

[0007] According to the guide structure described in the first aspect of the present invention, at least two guide vanes are evenly distributed along the circumference of the bottom plate.

[0008] According to the guide structure described in the first aspect of the present invention, the top surface of the guide vane is a plane parallel to the bottom plate.

[0009] According to the guide structure described in the first aspect of the present invention, the top surface of the guide vane is provided with cutting teeth or cutting edges.

[0010] According to the guide structure described in the first aspect of the present invention, a connecting section is formed at the intersection of the guide vane and the base plate, a line connecting one end of the connecting section and the center of the base plate is configured as a first construction line, and a line connecting the other end of the connecting section and the center of the base plate is configured as a second construction line, and an angle a is formed between the first construction line and the second construction line, and the angle a satisfies: 180°≥a≥0°.

[0011] According to the guide structure described in the first aspect of the present invention, a connecting section is formed at the junction of the guide vane and the bottom plate, the connecting section is curved, and the guide vane is formed by extending from the connecting section.

[0012] According to the guide structure described in the first aspect of the present invention, a connection section is formed at the intersection of the guide vane and the bottom plate, and the guide surface extends from the connection section to the top surface of the guide vane.

[0013] According to a second aspect of the present invention, there is provided a food processor, comprising a cup body and any one of the above-mentioned flow guiding structures, wherein the flow guiding structure is installed at the bottom of the cup body.

[0014] Beneficial effects: A flow guide structure is added to the bottom of the food processor cup body to control the flow state near the blade, so that the fluid can flow radially, reduce the circumferential flow speed of the fluid, control the sound radiation of the fluid near the bottom of the cup, and thus reduce the whipping noise. At the same time, the flow guide structure is installed at the bottom of the cup body, which is easy to remove for cleaning.

[0015] The food processor according to the second aspect of the present invention further comprises a blade, wherein the blade is disposed in the cup body, and the flow guide structure is disposed below the blade.

[0016] According to a third aspect of the present invention, a food processor is provided, comprising a cup body and any one of the above-mentioned flow guiding structures, wherein the flow guiding structure and the cup body are an integral part, and the flow guiding structure is located at the bottom of the cup body.

[0017] Beneficial effects: The flow guide structure at the bottom of the food processor cup controls the flow state near the blade, allowing the fluid to flow radially, reducing the circumferential flow speed of the fluid, controlling the acoustic radiation of the fluid near the bottom of the cup, and thus reducing the whipping noise. At the same time, the flow guide structure and the cup body are integrated to improve assembly efficiency.

[0018] The food processor according to the third aspect of the present invention further includes a blade, wherein the blade is disposed in the cup body, and the flow guide structure is disposed below the blade. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention is further described below in conjunction with the accompanying drawings and embodiments;

[0020] Figure 1 It is a structural schematic diagram of an embodiment of a food cooking machine of the present invention;

[0021] Figure 2 for Figure 1 AA section view in;

[0022] Figure 3 for Figure 1BB section view in;

[0023] Figure 4 A three-dimensional diagram of a first embodiment of a flow guide structure of the present invention;

[0024] Figure 5 It is a front view of the first embodiment of the flow guide structure of the present invention;

[0025] Figure 6 This is a schematic diagram of the present invention in which the direction of rotation of the guide surface is the same as the direction of rotation of the fluid;

[0026] Figure 7 It is a schematic diagram of the present invention in which the rotation direction of the guide surface is opposite to the direction of the fluid;

[0027] Figure 8 A perspective view of a second embodiment of the flow guide structure of the present invention;

[0028] Fig. 9 It is a front view of the second embodiment of the flow guide structure of the present invention;

[0029] Fig.10 A perspective view of a third embodiment of a flow guide structure of the present invention;

[0030] Fig.11 It is a front view of the third embodiment of the guide structure of the present invention.

[0031] Reference numerals:

[0032] Diversion structure 10;

[0033] Bottom plate 100;

[0034] Guide vane 200; guide surface 210; guide channel 220; top surface 230; connecting section 240;

[0035] A first blade segment 250; a second blade segment 260; a third blade segment 270; a fourth blade segment 280;

[0036] Cup body 300;

[0037] Blade 400;

[0038] Spoiler ribs 500;

[0039] Angle a; fluid turning b; fluid flow direction c. DETAILED DESCRIPTION

[0040] This section will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present invention, but it cannot be understood as a limitation on the scope of protection of the present invention.

[0041] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., and orientations or positional relationships indicated are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0042] In the description of the present invention, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood as not including the number itself, and "above", "below", "within" etc. are understood as including the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0043] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0044] Reference Figures 1 to 3 The food processor includes a cup body 300 and a blade 400. The cup body 300 is used to hold food. The blade 400 is arranged in the cup body 300. The blade 400 can be used to make soy milk, grind dry powder, squeeze juice, make meat filling, shaved ice, etc. The flow guide structure 10 is arranged at the bottom of the cup body 300, and the height of the flow guide structure 10 is lower than the blade 400. When the food processor is working, the fluid driven by the rotation of the blade 400 enters the flow guide structure 10. The flow guide structure 10 can reduce the circumferential flow speed of the fluid and control the sound radiation of the fluid near the bottom of the cup, thereby achieving the effect of noise reduction.

[0045] Specifically, a food processor includes: a cup body 300; and a diversion structure 10, which is installed at the bottom of the cup body 300. A blade 400 is installed in the cup body 300. The height of the guide vane 200 is lower than the bottom end of the blade 400, so as not to interfere with the blade 400. The inner wall of the cup body 300 is provided with turbulence ribs 500. By setting the turbulence ribs 500, the whipping performance of the food processor is improved, the residue rate after cooking is reduced, and the cooking effect is enhanced. The inner wall diameter of the cup body 300 is Dn; the outer diameter of the guide vane 200 is D, D < Dn. The outer diameter of the guide vane 200 can be understood as the maximum diameter of the circle formed by the guide vane 200 rotating around the center of the bottom plate 100 for one week; the inner diameter of the guide vane 200 is d, d > 0.2Dn. The inner diameter of the guide vane 200 can be understood as the minimum diameter of the circle formed by the guide vane 200 rotating around the center of the bottom plate 100 for one week. By adding the guide vane 200 at the bottom of the cup body 300 of the food processor, the flow state near the blade 400 is controlled by the guide vane 200, so that the fluid can flow radially, the circumferential flow velocity of the fluid is reduced, and the fluid acoustic radiation near the bottom of the cup is controlled, thereby reducing the whipping noise. At the same time, the diversion structure is installed at the bottom of the cup body 300, which is convenient to disassemble for cleaning work.

[0046] In some of these embodiments, the diversion structure 10 can also be set as an integral part with the cup body 300. Correspondingly, the diversion structure 10 is located at the bottom of the cup body 300. The diversion structure 10 and the cup body 300 are an integral part, and its structure is stable and the assembly efficiency is improved.

[0047] Refer to Figures 4 to 11 , the diversion structure 10 includes a bottom plate 100 and at least two guide vanes 200. The guide vanes 200 are arranged on the bottom plate 100. The guide vanes 200 are provided with diversion surfaces 210. The diversion surfaces 210 are used to guide the fluid from the center of the bottom plate 100 to the edge of the bottom plate 100, or to guide the fluid from the edge of the bottom plate 100 to the center of the bottom plate 100. A diversion channel 220 is formed between adjacent guide vanes 200. It can be understood that on the opposite sides of a guide vane 200 are two different diversion channels 220, that is, diversion surfaces 210 are provided on both opposite sides of the guide vane 200. Each diversion surface 210 of the guide vane 200 and the diversion surface 210 of the adjacent guide vane 200 form a diversion channel 220. Two adjacent guide vanes 200 can completely overlap to form a diversion channel 220, that is, the complete two guide vanes 200 both form the diversion channel 220, and the diversion channel 220 is defined by a complete guide vane 200 and a complete other guide vane 200; it can be understood that the diversion channel 220 can also be that two adjacent guide vanes 200 partially overlap, and the adjacent two guide vanes 200 partially overlap to form a diversion channel 220 correspondingly, that is, the diversion channel 220 is defined by a part of one guide vane 200 and a part of the other guide vane 200.

[0048] Reference Figure 6 , the guide surface 210 can be set to have the same rotation direction as the fluid turning direction b, that is, the fluid turning direction b is counterclockwise, and the guide surface 210 extends from the center of the bottom plate 100 to the edge of the bottom plate 100 in the counterclockwise direction, and the rotation direction of the guide surface 210 is counterclockwise. At this time, the guide surface 210 is used to guide the fluid from the center of the bottom plate 100 to the edge of the bottom plate 100, that is, the inlet of the guide channel 220 is located at the end of the guide vane 200 close to the center of the bottom plate 100, and the outlet of the guide channel 220 is located at the end of the guide vane 200 close to the edge of the bottom plate 100. The fluid flows in through the inlet of the guide channel 220 and then flows out through the outlet of the guide channel 220, thereby changing its flow direction, reducing the flow speed, and thus reducing noise.

[0049] Reference Figure 7 , the guide surface 210 can also be set to have a rotation direction opposite to the fluid turning direction b, that is, the fluid turning direction b is clockwise, and the guide surface 210 extends from the center of the bottom plate 100 to the edge of the bottom plate 100 in a counterclockwise direction, and the rotation direction of the guide surface 210 is counterclockwise. At this time, the inlet of the guide channel 220 is located at one end of the edge of the guide vane 200 close to the bottom plate 100, and the outlet of the guide channel 220 is located at one end of the guide vane 200 close to the center of the bottom plate 100. The fluid flows in through the inlet of the guide channel 220 and then flows out through the outlet of the guide channel 220. At this time, the guide structure 10 provides flow resistance and reduces noise to a certain extent.

[0050] Reference Figure 4 and Figure 5 , 7 guide vanes 200 are arranged on the bottom plate 100, and a connecting section 240 is formed at the intersection of the guide vanes 200 and the bottom plate 100, and a line connecting one end of the connecting section 240 and the center of the bottom plate 100 is configured as a first structural line, and a line connecting the other end of the connecting section 240 and the center of the bottom plate 100 is configured as a second structural line, and an angle a is formed between the first structural line and the second structural line, and optionally, the value of the angle a is 81°. Most of the two adjacent guide vanes 200 overlap, and the overlapping parts form a guide channel 220 correspondingly. The guide channel 220 is located at the front end of one guide vane 200 and at the rear end of the other guide vane 200. The fluid first flows along the guide surface 210 of one guide vane 200 into the guide channel 220, and the fluid flows out of the guide channel 220 and flows along the guide surface 210 of the other guide vane 200.

[0051] Specifically, refer to Figure 5 , one guide vane 200 includes a first blade segment 250 and a second blade segment 260, and the other guide vane 200 includes a third blade segment 270 and a fourth blade segment 280. Figure 6, when the guide surface 210 is the same as the fluid turning direction b, the fluid first flows along the guide surface 210 of the first blade segment 250 into the guide channel 220 surrounded by the second blade segment 260 and the third blade segment 270, and then flows out of the guide channel 220 and flows along the guide surface 210 of the fourth blade segment 280. The guide surface 210 of the first blade segment 250 allows more fluid to flow into the guide channel 220, and the guide surface 210 of the fourth blade segment 280 can continue to control the fluid. During this flow process, the flow cross-section of the fluid continues to increase, thereby reducing the circumferential flow velocity of the fluid as a whole, controlling the sound radiation of the fluid near the bottom of the cup, and reducing the whipping noise. Figure 7 When the guide surface 210 is opposite to the fluid turning direction b, the fluid first enters the guide channel 220 surrounded by the second blade segment 260 and the third blade segment 270, and then flows out of the guide channel 220 and flows along the guide surface 210 of the first blade segment 250. The guide surface 210 of the first blade segment 250 can continue the control state of the guide channel 220 on the fluid. In this flow process, the guide channel 220 and the guide surface 210 provide flow resistance, which reduces noise to a certain extent. Experimental data show that the noise reduction effect is more obvious at low gear. In the above embodiment, the first blade segment 250, the second blade segment 260, the third blade segment 270 and the fourth blade segment 280 are all provided with a guide surface 210. It is understandable that the guide surface 210 may be provided on only a portion of the guide vane 200 , that is, the guide surface 210 may be provided on only the first blade segment 250 , while the second blade segment 260 has no guide surface 210 , or the guide surface 210 may be provided on only a small section of the first blade segment 250 .

[0052] Reference Figure 8 and Fig. 9In some embodiments, the guide structure 10 can also be configured to include a base plate 100 and three guide vanes 200, the intersection of the guide vane 200 and the base plate 100 forms a connecting section 240, the line connecting one end of the connecting section 240 and the center of the base plate 100 is configured as a first structural line, the line connecting the other end of the connecting section 240 and the center of the base plate 100 is configured as a second structural line, and an angle a is formed between the first structural line and the second structural line, and the value of the angle a is 180°. Small parts of two adjacent guide vanes 200 overlap, and the overlapping parts form a guide channel 220 correspondingly. The guide channel 220 is located at the front end of one guide vane 200 and at the rear end of another guide vane 200. The fluid first flows along the guide surface 210 of one guide vane 200 into the guide channel 220, and the fluid flows out of the guide channel 220 and flows along the guide surface 210 of the other guide vane 200. The guide channel 220 and the guide surface 210 provide flow resistance, and the guide surface 210 can continue the control state of the guide channel 220 on the fluid. The combination of the guide channel 220 and the guide surface 210 can reduce the circumferential flow velocity of the fluid, control the sound radiation of the fluid near the bottom of the cup, and thus reduce the whipping noise.

[0053] Reference Fig.10 and Fig.11 In some embodiments, the guide structure 10 can also be configured to include a bottom plate 100 and seven guide vanes 200, the intersection of the guide vanes 200 and the bottom plate 100 forms a connecting section 240, a line connecting one end of the connecting section 240 and the center of the bottom plate 100 is configured as a first structural line, and a line connecting the other end of the connecting section 240 and the center of the bottom plate 100 is configured as a second structural line, and an angle a is formed between the first structural line and the second structural line, and the value of the angle a is 0. Two adjacent guide vanes 200 completely overlap, and the fluid flows directly along the guide channel 220. Since most of the fluid flows along the guide channel 220, the controllability is better.

[0054] The value of the angle a is related to the blade profile and rotation speed of the guide vane 200. Different optimal parameters exist for different rotation speeds and rotating blade profiles. The optimal parameters are matched with the blade profile of the guide vane 200 to achieve flow control and reduce the flow speed. Experimental data show that the number of guide vanes 200 is 2-30, the value of the angle a is 0-180°, and the noise reduction effect is best within this parameter value. It can be understood that when the number of guide vanes 200 is more than 30 and the value of a is greater than 180°, the noise reduction effect can also be achieved, which is also within the protection scope of the present invention.

[0055] In some of the embodiments, a connecting section 240 is formed at the intersection of the guide vane 200 and the base plate 100, and the connecting section 240 is curved. The guide vane 200 is extended from the connecting section 240. The guide vane 200 formed in this way is arranged in a curved shape along the fluid flow direction. Compared with a straight-line setting, it is more adaptable to the fluid flow and controls the radial flow direction and circumferential flow direction of the fluid at the same time.

[0056] In some of the embodiments, the guide surface 210 is optionally curved. The curved guide surface 210 makes the line shape of the guide surface 210 more consistent with the flow direction, making the fluid transition smoother, reducing the noise generated by collision, and achieving flow control. Figures 4 to 9 The guide surface 210 is a single arc. It is understandable that the guide surface 210 can also be formed by connecting multiple arcs with different curvatures, or by connecting multiple straight lines with different inclination directions, or by combining multiple straight lines and arcs.

[0057] Reference Figure 5 , Fig. 9 and Fig.11 In some embodiments, the guide surface 210 is perpendicular to the bottom plate 100. The existing food processor is provided with a spoiler rib 500 on the side wall of the cup body 300. The spoiler rib 500 is provided to hinder the flow direction of the rotating vortex, so that the food has a chance to be reflected on the blade 400 after hitting the spoiler rib 500, so as to improve the efficiency of whipping and crushing the food. In order to facilitate the flow of the fluid in the circumferential direction, the spoiler rib 500 is usually set to an inclined surface or a convex arc surface from the bottom surface to the top surface 230 of the spoiler rib 500, which reduces the retention time of the fluid on the spoiler rib 500, so that the fluid can continue to flow in the original direction, that is, flow in the circumferential direction, so the flow direction is not changed too much. It should be noted that the guide surface 210 is perpendicular to the bottom plate 100 in order to control the flow of the fluid along the guide channel, and more effective area can be reserved to make the fluid flow along the guide surface 210, that is, control the fluid to flow in the radial direction, reduce the circumferential flow speed of the fluid, control the sound radiation of the fluid near the bottom of the cup, and thus reduce the whipping noise.

[0058] Reference Figure 4 , Figure 8 and Fig.10In some embodiments, the top surface 230 of the guide vane 200 is a plane parallel to the bottom plate 100, and the guide surface 210 extends from the connecting section 240 to the top surface 230 of the guide vane 200. The top surface 230 of the guide vane 200 is set as a plane, which can reserve more effective area to allow the fluid to flow along the guide channel compared to the curved surface or other convex surface, that is, the guide surface 210 can have a larger area. The guide surface 210 extends from the connecting section 240 to the top surface 230 of the guide vane 200 to allow the guide surface 210 to have a larger area, thereby improving the flow diversion efficiency. It can be understood that a fillet or chamfer can be set between the top surface 230 and the guide surface 210 for transition, and the guide surface 210 can also be a part between the bottom plate 100 and the top surface 230 of the guide vane 200, that is, the guide surface 210 can be set at least one of the upper part, middle part or lower part of the guide vane 200 or a combination thereof.

[0059] In some of the embodiments, the top surface 230 of the guide blade 200 may also be provided with cutting teeth or cutting edges, which can improve the cutting ability of the guide blade 200, thereby improving the whipping performance of the food processor, reducing the residue rate after cooking, and improving the cooking effect.

[0060] Reference Figures 4 to 11 The guide vanes 200 are evenly distributed along the circumference of the bottom plate 100, so that the force on the guide structure 10 is more balanced, thereby ensuring more stable guide flow. It can be understood that since the bottom plate 100 can be fixed to the bottom of the cup, the uneven arrangement of the guide vanes 200 can also achieve the effect of reducing noise to a certain extent.

[0061] The embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the knowledge scope of ordinary technicians in the technical field without departing from the purpose of the present invention.

Claims

1. A flow guide structure for a food processor, characterized in that: include: Base plate; At least two guide vanes are arranged on the bottom plate, and the guide vanes are provided with guide surfaces, and the guide surfaces are used to guide the fluid from the center of the bottom plate to the edge of the bottom plate, or to guide the fluid from the edge of the bottom plate to the center of the bottom plate. A guide channel is formed between adjacent guide vanes, and a connecting section is formed at the intersection of the guide vane and the bottom plate, and the connecting section is curved. The guide vane is extended from the connecting section, and the guide surface is perpendicular to the bottom plate.

2. The flow guiding structure according to claim 1, characterized in that: The top surface of the guide vane is a plane parallel to the bottom plate.

3. The flow guiding structure according to claim 1, characterized in that: At least two guide vanes are evenly distributed along the circumference of the base plate.

4. The flow guiding structure according to claim 1, characterized in that: The top surface of the guide vane is provided with cutting teeth or cutting edges.

5. The flow guiding structure according to claim 1, characterized in that: A line connecting one end of the connecting segment and the center of the base plate is configured as a first construction line, and a line connecting the other end of the connecting segment and the center of the base plate is configured as a second construction line. An angle a is formed between the first construction line and the second construction line, and the angle a satisfies: 180°≥a≥0°.

6. The flow guiding structure according to any one of claims 1 to 5, characterized in that: The guide surface extends from the connecting section to the top surface of the guide vane.

7. A food processor, characterized in that: It comprises a cup body and the flow guiding structure according to any one of claims 1 to 6, wherein the flow guiding structure is installed at the bottom of the cup body.

8. The food processor according to claim 7, characterized in that It also includes a blade, which is arranged in the cup body, and the guide structure is arranged below the blade.

9. A food processor, characterized in that: It comprises a cup body and the flow guiding structure according to any one of claims 1 to 6, wherein the flow guiding structure and the cup body are an integral piece, and the flow guiding structure is located at the bottom of the cup body.

10. The food processor according to claim 9, characterized in that It also includes a blade, which is arranged in the cup body, and the guide structure is arranged below the blade.

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