Food processor

Abstract

The utility model discloses a food processor. The food processor comprises a stirring cup, a turbulent flow cover, a stirring knife assembly and a driving device. And the inner wall surface of the stirring cup is a rotating curved surface. The turbulent flow cover is fixed in the stirring cup, and the outer wall face of the turbulent flow cover is attached to the inner wall face of the turbulent flow cover. The turbulent flow cover comprises a turbulent flow cover cavity and turbulent flow ribs; and the turbulent flow ribs convexly extend into the cavity of the turbulent flow cover. The stirring knife assembly comprises a blade located in the cavity of the turbulent flow cover. And the driving device drives the blade to rotate in the cavity of the turbulent flow cover. As the inner wall surface of the stirring cup is the rotating curved surface, and the outer wall surface of the turbulent flow cover is attached to the inner wall surface, on one hand, turbulent flow ribs do not need to be arranged on the inner wall surface, the yield of the stirring cup can be improved, manufacturing is convenient, on the other hand, food materials cannot enter the space between the turbulent flow cover and the stirring cup, and on the two aspects, the stirring cup and / or the turbulent flow cover are / is convenient to clean. As the turbulent flow cover plays a role in turbulent flow, the stirring effect is good, food materials can be stirred to be finer and smoother, and the taste is improved.

Description

Technical Field

[0001] The present application relates to the technical field of small household appliances, and in particular to a food processor. Background Art

[0002] The food processor comprises a driving assembly, a mixing cup and a mixing blade assembly. The mixing blade assembly comprises a blade located in the mixing cup. The driving assembly drives the blade to rotate in the mixing cup.

[0003] In order to achieve the spoiler effect, so that the food is beaten more delicately by the blade and has a better taste, spoiler ribs are protruded on the inner surface of the mixing cup. Since the spoiler ribs need to be provided, the manufacturing of the mixing cup is inconvenient (including when the mixing cup is a glass cup, adding spoiler ribs on the glass cup reduces the yield of the mixing cup), and without the spoiler ribs, the spoiler effect is not good and the taste of the food is not good. Utility Model Content

[0004] The purpose of the present application is to disclose a food processor, wherein the food processor has a good taste and can improve the yield rate.

[0005] The present application discloses a food processor. The food processor comprises a mixing cup, a spoiler, a mixing blade assembly and a driving device, wherein: the inner wall surface of the mixing cup is a rotating curved surface. The spoiler is fixed in the mixing cup, and the outer wall surface of the spoiler fits the inner wall surface. The spoiler comprises a spoiler cavity and a spoiler rib; the spoiler rib protrudes into the spoiler cavity. The mixing blade assembly comprises a blade located in the spoiler cavity. The driving device drives the blade to rotate in the spoiler cavity.

[0006] As described above, the inner wall surface of the mixing cup is a rotating curved surface, and the outer wall surface of the spoiler is fitted with the inner wall surface. On the one hand, the inner wall surface of the mixing cup does not need to be provided with spoiler ribs, which can improve the yield rate of the mixing cup and facilitate manufacturing. On the other hand, the outer wall surface of the spoiler is fitted with the inner wall surface so that there is no space between the spoiler and the mixing cup, and the food will not enter between the outer wall surface of the spoiler and the inner wall surface of the mixing cup. In addition, the inner wall surface is a rotating curved surface and there is no dead corner that is difficult to clean. These two aspects make it easy to clean the mixing cup and / or the spoiler. Furthermore, because the spoiler includes spoiler ribs protruding into the cavity of the spoiler and the blade rotates in the cavity of the spoiler, it plays a spoiler role, has a good stirring effect, can make the food more delicate, and improve the taste.

[0007] In some embodiments, the spoiler includes a through opening connecting the interior of the spoiler cavity and the exterior of the spoiler, and the interval between any adjacent through openings constitutes the spoiler rib.

[0008] As described above, since the intervals between any adjacent through-holes constitute the spoiler ribs, the food will not only collide with the spoiler ribs, but also with the side walls of the through-holes, thus further improving the spoiler effect, so that the food is more delicate and tastes better.

[0009] In some embodiments, when the outer wall surface is in contact with the inner wall surface, the inner wall surface covers the through-hole.

[0010] As described above, after the inner wall covers the through-hole, food is prevented from flowing between the spoiler and the mixing cup, which facilitates the cleaning of the spoiler and the mixing cup. In addition, this embodiment is combined with the through-hole, and large pieces of food will directly contact the spoiler ribs first and be beaten into finer food. Therefore, the finer food will contact the inner wall surface, so that large pieces of food will not directly contact the mixing cup (such as a glass), that is, the food will not hit the mixing cup, but hit the spoiler ribs, and the noise during the operation of the food processor is low.

[0011] In some embodiments, the food processor includes a disc assembly, a sealing ring and a cup cover assembly, wherein the disc assembly is located at the bottom of the blending cup, and the sealing ring seals the gap between the disc assembly and the blending cup; the spoiler presses against the sealing ring and the cup cover assembly to achieve the fixation.

[0012] As described above, the spoiler is tightly pressed against the sealing ring and the cup cover assembly, so the spoiler is easy to assemble and not easy to shake. The sealing ring can also play a role in shock absorption for the spoiler, thereby reducing noise.

[0013] In some embodiments, the blending cup includes a guide section located above the sealing ring; the spoiler includes a matching section; the guide section guides the matching section so that the spoiler moves downward and abuts against the sealing ring.

[0014] As set up above, since the guide section guides the matching section so that the spoiler moves downward and abuts against the sealing ring, it is convenient for the spoiler to be assembled in the mixing cup and for the outer wall surface of the spoiler to fit with the inner wall surface, and the fit is better and the sealing effect is better.

[0015] In some embodiments, the sealing ring is also lower than the top surface of the tray assembly, so that a receiving groove is formed between the blending cup and the tray assembly, and the spoiler is inserted into the receiving groove.

[0016] As configured above, since the spoiler is inserted into the receiving groove, the receiving groove can limit the spoiler so that the spoiler can better press against the sealing ring and the outer wall surface of the spoiler can also fit the inner wall surface.

[0017] In some embodiments, a reflow portion is disposed on the top of the spoiler, and the reflow portion is disposed around the circumference of the spoiler, and an inner edge of the reflow portion is closer to the center of the spoiler cavity than the spoiler rib.

[0018] As set up above, since the reflux portion is arranged around the circumference of the spoiler, and the inner edge is closer to the center of the spoiler cavity, the rotation of the blade drives the water flow upward and is blocked by the reflux portion and flows back, and the water and food are crushed by the blade again, thereby achieving a better stirring effect and a better taste of the food.

[0019] In some embodiments, the food processor includes a cup cover assembly locked with the blending cup. The cup cover assembly includes a supporting portion surrounding the cup cover assembly, and when the cup cover assembly is locked with the blending cup, the supporting portion abuts against the reflux portion.

[0020] As arranged above, the reflux portion can realize the reflux function and can abut against the abutting portion. In this way, there is no need to arrange another component to abut against the abutting portion. In this way, the structure of the food processor is simple.

[0021] In some embodiments, the top of the spoiler includes a limiting ring connected to the return portion and surrounding the return portion, and the limiting ring is located in the abutting portion.

[0022] As configured above, the limiting ring can limit the assembly of the cup cover assembly, so that the cup cover assembly can be pressed against the spoiler.

[0023] In some embodiments, the blending cup is a glass cup.

[0024] As set up above, since the blending cup is a glass cup and the glass material is easily damaged, the setting of the spoiler cover can better ensure the yield of the blending cup and the spoiler effect of the food processor to improve the taste.

[0025] In some embodiments, the inner wall surface includes a cylindrical surface and a curved surface or an inclined surface, and the curved surface or the inclined surface is connected to the cylindrical surface so that the radial width of the blending cup decreases from the lower end of the cylindrical surface.

[0026] As arranged above, the inner wall surface has a simple structure, is easy to manufacture, and has a high yield rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is an exploded view of a food processor according to an embodiment of the present application;

[0028] Figure 2 yes Figure 1 A schematic diagram of a food processor in which a spoiler and a return member are in a disassembled state is shown;

[0029] Figure 3 is a cross-sectional view of a food processor at an angle according to an embodiment of the present application;

[0030] Figure 4 is a cross-sectional view of a food processor at another angle according to an embodiment of the present application;

[0031] Figure 5 yes Figure 4 A magnified view of part A;

[0032] Figure 6 yes Figure 4 Magnified view of part B. DETAILED DESCRIPTION

[0033] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Instead, they are merely examples of devices consistent with some aspects of the present application as detailed in the appended claims.

[0034] The terms used in this application are only for the purpose of describing specific embodiments and are not intended to limit this application. Unless otherwise defined, the technical terms or scientific terms used in this application should be understood by people with ordinary skills in the field to which this application belongs. The words "first", "second" and similar words used in the specification and claims of this application do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, words such as "one" or "one" do not indicate a quantitative limit, but indicate that there is at least one. "Multiple" or "several" means two or more. Unless otherwise specified, words such as "front", "rear", "lower" and / or "upper" are only for the convenience of explanation and are not limited to one position or one spatial orientation. Words such as "include" or "comprise" mean that the elements or objects appearing in front of "include" or "comprise" include the elements or objects listed after "include" or "comprise" and their equivalents, and do not exclude other elements or objects. Words such as "connect" or "connected" are not limited to physical or mechanical connections, and can include electrical connections, whether direct or indirect. The singular forms "a", "said" and "the" used in this specification and the appended claims are also intended to include the plural forms, unless the context clearly indicates otherwise. It should also be understood that the term "and / or" used herein refers to and includes any or all possible combinations of one or more of the associated listed items.

[0035] See also Figure 1 Combined with Figure 3 and Figure 4 The present application discloses a food processor. The food processor comprises a blending cup 1, a spoiler 2, a blending blade assembly 3 and a driving device 4. The inner wall surface 11 of the blending cup 1 is a rotating curved surface. The rotating curved surface means that no spoiler ribs are provided, and it can also be understood as a rotating curved surface composed of a moving straight line (as shown in the figure, the moving straight line is formed by sequentially connecting a first straight line in the vertical direction, an arc line and a second straight line in the vertical direction). In general, one purpose of the inner wall surface 11 being a rotating curved surface is that spoiler ribs do not need to be provided, so as to ensure the yield of the blending cup 1 and / or facilitate manufacturing. For example, when the blending cup 1 is a glass cup, the inner wall surface 11 is a rotating curved surface, which can make the blending cup 1 not easy to break and have a high yield; for another example, because spoiler ribs do not need to be provided due to the rotating curved surface, it is convenient to manufacture the blending cup (in this case, the blending cup 1 is not limited to a glass cup, but can also be a metal cup).

[0036] See also Figure 3 and Figure 4 Combined with Figure 1 , the spoiler 2 is fixed in the mixing cup 1, and the outer wall surface 21 of the spoiler 2 is fitted with the inner wall surface 11. The fitting also includes a certain assembly gap between the outer wall surface 21 and the inner wall surface 11, or it can be completely fitted. The spoiler 2 includes a spoiler cavity 22 and spoiler ribs 23. The number and structure of the spoiler ribs 23 are not limited. In the embodiment of the present application, there are six spoiler ribs 23, which can play a spoiler role. The spoiler ribs 23 protrude into the spoiler cavity.

[0037] See also Figure 3 and Figure 4 Combined with Figure 1 , the stirring blade assembly 3 includes a blade 31 located in the spoiler cavity 22. The driving device 4 drives the blade 31 to rotate in the spoiler cavity 22. In an embodiment of the present application, the motor shaft 41 of the driving device 4 is directly connected to the blade 31 to drive the blade 31 to rotate. In other embodiments, the stirring blade assembly 3 and the driving device 4 are connected via a clutch, whereby the driving device 4 drives the blade 31 to rotate; in yet other embodiments, the stirring blade assembly 3 and the driving device 4 can be driven by magnetic force.

[0038] As described above, the inner wall surface 11 of the mixing cup 1 is a rotating curved surface, and the outer wall surface 21 of the spoiler 2 is fitted with the inner wall surface 11. On the one hand, the inner wall surface of the mixing cup 1 does not need to be provided with spoiler ribs, which can improve the yield rate of the mixing cup 1 and facilitate manufacturing. On the other hand, the outer wall surface 21 of the spoiler 2 is fitted with the inner wall surface 11 so that there is no space between the spoiler 2 and the mixing cup 1, and the food will not enter between the outer wall surface 21 of the spoiler 2 and the inner wall surface 11 of the mixing cup 1. In addition, the inner wall surface 11 is a rotating curved surface without a dead angle that is difficult to clean. These two aspects make it easy to clean the mixing cup 1 and / or the spoiler 2. Furthermore, because the spoiler 2 includes spoiler ribs 23 protruding into the spoiler cavity 22 and the blade 31 rotates in the spoiler cavity 22, it plays a spoiler role, has a good stirring effect, can make the food more delicate, and improve the taste.

[0039] Based on the function of the spoiler 2, the spoiler 2 is not limited to the hollow structure as shown in the figure, but can also be a non-hollow cylindrical structure. In the case where the spoiler 2 is non-hollow, the spoiler 2 and the mixing cup 1 form a double-layer structure, which is also conducive to reducing noise. As follows, in conjunction with the accompanying drawings, the structure of the spoiler 2 of an embodiment of the present application is described.

[0040] See also Figure 2 Combined with Figure 1 , Figure 3 and Figure 4 The spoiler cover 2 includes a through hole 24 connecting the inside of the spoiler cover cavity 22 and the outside of the spoiler cover 2, and the interval between any adjacent through holes 24 constitutes the spoiler rib 23. Figure 3 In the case where the outer wall surface 21 is in contact with the inner wall surface 11, the inner wall surface 11 covers the through-hole 24. In other embodiments, the inner wall surface 11 may not cover the through-hole 24.

[0041] As described above, the interval between any adjacent through-holes 24 constitutes the spoiler rib 23. In this way, the food will not only collide with the spoiler rib 23, but also with the side wall 241 of the through-hole 24, further improving the spoiler effect, so that the food is more delicate and tastes better. When the outer wall surface 21 is fitted with the inner wall surface 11, the inner wall surface 11 covers the through-hole 24, preventing food from flowing between the spoiler cover 2 and the mixing cup 1, which is convenient for cleaning the spoiler cover 2 and the mixing cup 1 later. In addition, this embodiment is combined with the through-hole 24. Although the through-hole 24 is provided, large pieces of food will directly contact the spoiler rib 23 first and be whipped into finer food. Therefore, the finer food is in contact with the inner wall surface 11. In this way, large pieces of food will not directly contact the mixing cup 1 (such as a glass), that is, the food will not hit the mixing cup, but hit the spoiler rib 23, and the noise is low during the working process of the food processor.

[0042] See also Figure 2 and Figure 1 Combined with Figure 3 and Figure 4 The spoiler ribs 23 are evenly distributed around the circumference of the spoiler cover 2 .

[0043] As configured above, since the spoiler ribs 23 are evenly distributed around the circumference of the spoiler cover 2, the food can be impacted at multiple locations, resulting in a good spoiler effect and improved taste.

[0044] See also Figure 4 and Figure 5 Combined with Figure 3 The food processor comprises a plate assembly 5, a sealing ring 6 and a cup cover assembly 7. The plate assembly 5 is located at the bottom of the blending cup 1 and serves as the cup bottom. Figure 3 and Figure 4 As shown, the plate assembly 5 can be a heating plate assembly, so that the food processor has a heating function. Of course, for a food processor without a heating function, the plate assembly 5 can also be used only as a cup bottom. In other embodiments, for example, when the motor shaft 41 is not directly connected to the stirring blade assembly 3, the plate assembly 5 can also be used to install the stirring blade assembly 3.

[0045] As for how the sealing ring 6 is located between the tray assembly 5 and the mixing cup 1, there are many ways to implement it. In the embodiments of the present application, see Figure 4 The food processor includes a cup holder 91 and a bracket 92 , the bracket 92 is assembled with the cup holder 91 , and the sealing ring 6 is clamped between the blending cup 1 and the bracket 92 , thereby being located between the disc assembly 5 and the blending cup 1 .

[0046] The sealing ring 6 seals the gap between the plate assembly 5 and the blending cup 1. The spoiler 2 is pressed against the sealing ring 6 and the cup cover assembly 7, so that the spoiler 2 is fixed in the blending cup 1. However, how the spoiler 2 is fixed is not limited thereto.

[0047] As described above, the spoiler 2 is tightly pressed against the sealing ring 6 and the cup cover assembly 7, so that the spoiler 2 is easy to assemble and not easy to shake. The sealing ring 6 can also play a role in shock absorption for the spoiler 2, thereby reducing noise.

[0048] See also Figure 5 Combined with Figure 4 , Figure 3 , Figure 1 and Figure 2The blending cup 1 includes a guide section 12 located above the sealing ring 6. The spoiler 2 includes a matching section 25; the guide section 12 guides the matching section 25 so that the spoiler 2 moves downward and abuts against the sealing ring 6. Figure 5 Combined with Figure 4 and Figure 3 , the matching section 25 and the guide section 12 are both arc-shaped. In an alternative embodiment, the radial width of the guide section 12 in the mixing cup 1 and the radial width of the matching section 25 in the mixing cup 1 decrease along the axial direction of the spoiler 2 and in the direction away from the cup cover assembly 7. The radial width can be seen in Figure 3 As shown in w.

[0049] As set up above, since the guide section 12 guides the matching section 25, so that the spoiler 2 moves downward and abuts against the sealing ring 6, it is convenient for the spoiler 2 to be assembled in the stirring cup 1, and it is also convenient for the outer wall surface 21 of the spoiler 2 to fit with the inner wall surface 11, and the fit is better and the sealing effect is better.

[0050] See also Figure 5 Combined with Figure 4 and Figure 3 In addition to the sealing ring 6 being located between the blending cup 1 and the disk assembly 5 , the sealing ring 6 is also lower than the top surface of the disk assembly 5 , so that a receiving groove 13 is formed between the blending cup 1 and the disk assembly 5 , and the spoiler 2 is inserted into the receiving groove 13 .

[0051] As configured above, since the spoiler 2 is inserted into the receiving groove 13, the receiving groove 13 can limit the spoiler 2 so that the spoiler 2 can better press against the sealing ring 6 and the outer wall surface 21 of the spoiler 2 can fit with the inner wall surface 11.

[0052] See also Figure 2 and Figure 3 Combined with Figure 1 , Figure 4 and Figure 6, a reflux portion 271 is provided at the top of the spoiler 2. In an embodiment of the present application, the food processor includes a reflux member 27, and the reflux member 27 includes the reflux portion 271. When the reflux member 27 is assembled (for example, welded) on the top of the spoiler 2, the reflux portion 271 is provided at the top of the spoiler 2. Of course, in some embodiments, the reflux member 27 and the spoiler 2 can be integrally formed. The reflux portion 271 is provided around the circumference of the spoiler 2 (for example, around the circumference), and the inner edge of the reflux portion 271 is closer to the center of the spoiler cavity 22 than the spoiler rib 23. In an embodiment of the present application, the reflux portion 271 includes a reflux surface 2711 located above the mixing blade assembly 3, and the reflux surface 2711 is parallel to the radial plane of the mixing cup 1.

[0053] As configured above, since the reflux portion 271 is circumferentially arranged around the spoiler 2, and the inner edge is closer to the center of the spoiler cavity, the blade 31 rotates to drive the water flow upward and is blocked by the reflux portion and refluxes (in this embodiment, it is blocked by the reflux surface 2711 and refluxes), and the water and food are crushed again by the blade 31, thereby achieving a better stirring effect and a better taste of the food.

[0054] See also Figure 6 Combined with Figure 3 and Figure 4 The cup cover assembly 7 includes a supporting portion 71 surrounding the cup cover assembly 7 . When the cup cover assembly 7 is locked with the stirring cup 1 , the supporting portion 71 abuts against the reflux portion 271 .

[0055] As configured as above, the reflux portion 271 can not only realize the reflux function, but also abut against the abutting portion 71. Thus, there is no need to configure another component to abut against the abutting portion 71. Thus, the structure of the food processor is simple.

[0056] See also Figure 6 Combined with Figure 3 , Figure 4 and Figure 2 The top of the spoiler 2 includes a limiting ring 272 connected to the return portion 271 and surrounding the return portion 271 , and the limiting ring 272 is located in the abutting portion 71 .

[0057] As configured above, the limiting ring 272 can limit the assembly of the cup cover assembly 7 , so that the cup cover assembly 7 can be pressed against the spoiler 2 .

[0058] In some embodiments, the stirring cup 1 is a glass cup.

[0059] As set above, since the blending cup 1 is a glass cup, the glass material is easily damaged, the setting of the spoiler 2 can better ensure the yield of the blending cup 1 and the spoiler effect of the food processor, thereby improving the taste.

[0060] See also Figure 3 and Figure 4 In some embodiments, the inner wall surface 11 includes a cylindrical surface 111 and a curved surface 112, and the curved surface 112 is tangent to the cylindrical surface 111, or the inner wall surface 11 includes a cylindrical surface 111 and an inclined surface, and the inclined surface is inclined to the vertical direction. Whether it is a curved surface or an inclined surface, the radial width of the mixing cup is reduced from the lower end of the cylindrical surface 111. The curved surface and the inclined surface correspond to the inner surface of the aforementioned guide section, and can also realize the guiding function.

[0061] As arranged above, the inner wall surface has a simple structure, is easy to manufacture, and has a high yield rate.

[0062] The above description is only a preferred implementation mode of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application shall be included in the scope of protection of the present application.

Claims

1. A food processor, characterized in that: The food processor comprises a mixing cup (1), a spoiler (2), a mixing blade assembly (3) and a driving device (4), wherein: The inner wall surface (11) of the stirring cup (1) is a rotational curved surface; The spoiler cover (2) is fixed in the stirring cup (1), and the outer wall surface (21) of the spoiler cover (2) is in contact with the inner wall surface (11); the spoiler cover (2) comprises a spoiler cover cavity (22) and spoiler ribs (23); the spoiler ribs (23) protrude into the spoiler cover cavity (22); The stirring blade assembly (3) comprises a blade (31) located in the spoiler cavity (22); The driving device (4) drives the blade (31) to rotate in the spoiler cavity (22).

2. The food processor according to claim 1, characterized in that: The spoiler (2) comprises at least two through openings (24), wherein the through openings (24) communicate with the interior of the spoiler cavity (22) and the exterior of the spoiler (2), and the spoiler ribs (23) are located between adjacent through openings (24).

3. The food processor according to claim 2, characterized in that: When the outer wall surface (21) and the inner wall surface (11) are in contact with each other, the inner wall surface (11) covers the through-hole (24).

4. The food processor according to claim 1, characterized in that: The food processor comprises a disc assembly (5), a sealing ring (6) and a cup cover assembly (7); the disc assembly (5) is located at the bottom of the blending cup (1); the sealing ring (6) seals the gap between the disc assembly (5) and the blending cup (1); and the spoiler (2) is pressed against the sealing ring (6) and the cup cover assembly (7) to achieve the fixation.

5. The food processor according to claim 4, characterized in that: The stirring cup (1) comprises a guide section (12) located above the sealing ring (6); the spoiler (2) comprises a matching section (25); the guide section (12) guides the matching section (25) so that the spoiler (2) abuts against the sealing ring (6).

6. The food processor according to claim 4, characterized in that: The sealing ring (6) is also lower than the top surface of the disk assembly (5), so that a receiving groove (13) is formed between the stirring cup (1) and the disk assembly (5), and the spoiler (2) is inserted into the receiving groove (13).

7. The food processor according to claim 1, characterized in that: A return portion (271) is provided at the top of the spoiler (2), and the return portion (271) is arranged around the circumference of the spoiler (2), and the inner edge of the return portion (271) is closer to the center of the spoiler cavity (22) than the spoiler rib (23).

8. The food processor according to claim 7, characterized in that: The food processor comprises a cup cover assembly (7) locked with the blending cup (1); the cup cover assembly (7) comprises a supporting portion (71) surrounding the cup cover assembly (7); when the cup cover assembly (7) is locked with the blending cup (1), the supporting portion (71) abuts against the reflux portion (271).

9. The food processor according to claim 8, characterized in that: The top of the spoiler (2) comprises a limiting ring (272) connected to the return portion (271) and surrounding the return portion (271), and the limiting ring (272) is located inside the abutting portion (71).

10. The food processor according to claim 1, characterized in that: The stirring cup (1) satisfies at least one of the following conditions: a) the stirring cup (1) is a glass cup; b) the inner wall surface (11) comprises a cylindrical surface (111) and a curved surface (112) or an inclined surface, wherein the curved surface (112) or the inclined surface is connected to the cylindrical surface (111) so that the radial width of the stirring cup (1) is reduced from the lower end of the cylindrical surface (111).

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