CN219782277U - Bean grinding box assembly and coffee machine - Google Patents

Abstract

The utility model provides a bean grinding box assembly and a coffee machine, and belongs to the technical field of bean grinding. The bean grinding box assembly comprises: the top of the bean box is open, and a first notch penetrating to the top end of the bean box is arranged on the peripheral wall of the bean box; the bean grinding mechanism comprises a cutter body arranged in the bean box and a first motor used for driving the cutter body to rotate; the box cover is covered on the top opening of the bean box, the inner side surface of the box cover is an inclined surface, and the height of the inclined surface gradually rises from one side close to the first notch to one side far away from the first notch; the outer periphery of the box cover is downwards bent to form a skirt edge part which is butted with the end face of the top open end of the bean box, a second notch which is upwards opened from the lower edge of the skirt edge part to be close to the top of the box cover is arranged on the skirt edge part of the box cover, and the first notch and the second notch are butted to form a powder outlet. The bean grinding box assembly can avoid the problem of powder accumulation on the box cover, thereby improving the powder yield.

Description

Bean grinding box assembly and coffee machine

Technical Field

The utility model belongs to the technical field of bean grinding, and particularly relates to a bean grinding box assembly and a coffee machine.

Background

At present, the problem of powder accumulation on a bean box cover in the powder outlet process of a bean grinding box in a bean grinding device on the market generally exists, so that the powder outlet rate is low. For example, chinese patent publication No. CN202457918U discloses an adjustable coffee grinder, which comprises a feeding container and a powder outlet channel, wherein the outer peripheral wall of the feeding container is provided with a powder outlet, the powder outlet channel is communicated with the powder outlet, a stirring knife is arranged in the feeding container, and the stirring knife rotates in the feeding container to make coffee beans into coffee powder and throw the coffee powder into the powder outlet channel. However, the top surface of the feeding container is usually not flat, there is a convex portion or a concave portion, the coffee powder is easily covered on the top surface of the feeding container during rotation of the stirring blade, and the powder outlet on the feeding container is generally arranged below the peripheral wall, so that the coffee powder covered on the top surface of the feeding container cannot be discharged from the powder outlet.

Disclosure of Invention

Aiming at the technical problems in the prior art, the utility model provides a bean grinding box assembly capable of avoiding powder accumulation on a box cover and a coffee machine.

The technical scheme adopted by the embodiment of the utility model is as follows:

a bean grinding bin assembly, the bean grinding bin assembly comprising:

the top of the bean box is open, and a first notch penetrating to the top end of the bean box is arranged on the peripheral wall of the bean box;

the bean grinding mechanism comprises a cutter body arranged in the bean box and a first motor used for driving the cutter body to rotate;

the box cover is covered on the top opening of the bean box, the inner side surface of the box cover is an inclined surface, and the height of the inclined surface gradually increases from one side close to the first notch to one side far away from the first notch; the outer periphery of the box cover is downwards bent to form a skirt edge part which is butted with the end face of the top open end of the bean box, a second notch which is upwards opened from the lower edge of the skirt edge part to be close to the top of the box cover is arranged on the skirt edge part, and the first notch and the second notch are butted to form a powder outlet.

Further, the skirt portion of the case cover gradually increases in height in a direction away from the first notch, so that the case cover covers the top opening of the bean case in an inclined state.

Further, the inner wall surface of the bean box comprises an arc surface section and a straight surface section along the circumferential direction of the inner wall surface, the straight surface section is tangent to the arc surface end, the free end of the straight surface section and the free end of the arc surface section form two opposite side edges of the powder outlet respectively, the outer peripheral wall of the bean box protrudes outwards to form an intermediate channel communicated with the powder outlet, the intermediate channel is provided with a first side wall surface connected with the free end of the arc surface section and a second side wall surface connected with the free end of the straight surface section, and an included angle between the first side wall surface and the straight surface section is smaller than 20 degrees, so that powder accumulation on the first side wall surface is avoided.

Further, the bean grinding box assembly further comprises:

and the inlet of the powder outlet channel is communicated with the outlet of the middle channel, and the air outlet channel is bent downwards so that the outlet of the air outlet channel faces downwards, so that the coffee powder generated in the bean box finally flows downwards after passing through the powder outlet and is finally discharged through the outlet of the powder outlet channel, the powder outlet efficiency of the coffee powder is improved, and the generation of accumulated powder in the powder outlet channel by the coffee powder is avoided.

Further, the bean grinding box assembly further comprises:

the first shutter is rotatably arranged in the powder outlet channel and can rotate in a direction away from the middle channel to open the inlet of the powder outlet channel or in a direction close to the middle channel to close the inlet of the powder outlet channel;

the second shutter is arranged outside the powder outlet channel and can slide relative to the powder outlet channel to open or close the outlet of the powder outlet channel. In this structure through setting up two and cover the door, can avoid the steam in the funnel subassembly to get into in powder passageway and the beans case.

Further, the bean grinding box assembly further comprises:

the connecting rod mechanism is respectively connected with the first shutter and the second shutter;

the second motor is in transmission connection with the connecting rod mechanism and is used for driving the connecting rod mechanism to drive the first door to rotate and the second door to slide simultaneously;

and the controller is electrically connected with the first motor and the second motor respectively, and is used for controlling the running time of the first motor and controlling the second motor to start when the first motor runs for a first time.

Further, the link mechanism includes:

the first connecting rod is connected with the rotating shaft of the second motor and the first door, and the second motor can drive the first connecting rod and the first door to synchronously rotate;

the first end of the second connecting rod is connected with the first connecting rod, the second end of the second connecting rod is fixedly connected with the second shutter, and the second connecting rod and the second shutter can be driven to synchronously slide relative to the powder outlet channel when the first connecting rod rotates. The structure can convert the rotary motion of the first door into the sliding motion of the second door, and has simple structure and ingenious design.

Further, the first notch does not penetrate to the bottom end of the peripheral wall of the bean box, so that the second notch is convenient to process.

A coffee maker further comprising a bean grinding bin assembly as described in the above embodiments.

Compared with the prior art, the embodiment of the utility model has the beneficial effects that:

the inner side surface of the bean box in the bean box grinding assembly is an inclined surface and is inclined downwards towards the direction of the powder outlet, so that the coffee powder attached to the inner side surface of the box cover can be discharged through the second notch of the skirt edge part under the action of air flow generated by rotation of the cutter body arranged in the bean box in the powder outlet process, the problem of powder accumulation on the box cover is avoided, and the powder outlet rate is improved.

Drawings

FIG. 1 is a perspective view of a bean box and box cover assembly in accordance with an embodiment of the present utility model;

FIG. 2 is a cross-sectional view of the assembly of the bean box and the box cover according to the embodiment of the present utility model;

FIG. 3 is a schematic perspective view of a bean box according to an embodiment of the present utility model;

FIG. 4 is a top view of a bean box according to an embodiment of the present utility model;

FIG. 5 is a schematic view of a first view of a cover according to an embodiment of the present utility model;

FIG. 6 is a schematic view of a second view of a cover according to an embodiment of the present utility model;

FIG. 7 is a schematic perspective view of a bean grinding box assembly according to an embodiment of the present utility model;

FIG. 8 is a top view of a bean grinding bin assembly according to an embodiment of the utility model;

FIG. 9 is an exploded view of a bean grinding bin assembly according to an embodiment of the utility model;

FIG. 10 is a schematic view showing a partial structure of a bean grinding box assembly according to an embodiment of the present utility model, wherein a second shutter is in an opened state;

fig. 11 is a schematic view showing a partial structure of a bean grinding box assembly according to an embodiment of the present utility model, wherein the second shutter is in a closed state.

In the figure: 1-a bean box; 100-a first notch; 101-arc surface sections; 102-straight section; 103-knife hole; 2-a case cover; 20-skirt portion; 21-a second gap; 22-inner side; 3-an intermediate channel; 30-a first sidewall; 31-a second sidewall surface; 4-a powder outlet channel; 5-a first shutter; 6-a second door; 7-a link mechanism; 70-a first link; 71-a second link; 8-a second motor; 9-a bracket; 90-through holes; 91-a supporting seat; 92-a guide rail; 93-convex edges; 10-a first motor; 11-a funnel assembly; 12-knife body.

Detailed Description

In order to enable those skilled in the art to better understand the technical solutions of the embodiments of the present utility model, the present utility model is described in detail below with reference to the accompanying drawings and detailed description.

The embodiment of the utility model provides a bean grinding box assembly. As shown in fig. 1 and 2, the bean grinding box assembly comprises at least a bean box 1, a box cover 2 and a bean grinding mechanism.

As shown in fig. 3 and 4, the bean box 1 is used for placing coffee beans, and the top of the bean box is open. The outer peripheral wall of the bean box 1 is provided with a first notch 100, and the first notch 100 penetrates to the top of the bean box 1.

A cover 2 is closed over the top opening of the bean box 1 to form a cavity with the bean box 1 for processing coffee grounds. The bean grinding mechanism comprises a cutter body 12 arranged in the bean box 1, and a first motor 10 for driving the cutter body 12 to rotate in the bean box 1, and the cutter body 12 rotates in the bean box 1 to break up coffee beans to form coffee powder.

As shown in fig. 5 and 6, the inner side 22 of the case lid 2 is inclined (inclined flat surface), and the height of the side of the inner side 22 close to the first notch 100 of the bean box 1 is smaller than the height of the side thereof away from the first notch 100 so that the inner side 22 of the case lid 2 is inclined downward toward the first notch 100. In this embodiment and the embodiments described below, the inner side surface 22 of the box cover 2 refers to a surface of the box cover 2 that faces the bottom surface of the bean box 1 when the box cover 2 is closed on the bean box 1.

The outer peripheral edge of the case cover 2 is folded downward to form a skirt portion 20 abutting against the end face of the top end of the bean case 1, and the skirt portion 20 is provided with a second notch 21 which opens from the lower edge thereof upward to near the top of the case. The second notch 21 on the box cover 2 is in butt joint with the first notch 100 on the bean box 1 to form a powder outlet, and the coffee powder processed and formed in the bean box 1 can be blown out or thrown out through the powder outlet under the action of air flow generated by the rotation of the cutter body 12.

In the bean grinding box assembly provided by the embodiment, the inner side surface 22 of the box cover 2 is inclined and is inclined downwards towards the direction of the powder outlet, so that the coffee powder attached to the inner side surface 22 of the box cover 2 can be discharged through the second notch 21 on the skirt edge part 20 under the action of the air flow generated by the rotation of the cutter body 12 arranged in the bean box 1 in the powder outlet process, the problem of powder accumulation on the inner side surface 22 of the bean box cover 2 is avoided, and the powder outlet rate is improved.

As shown in fig. 3 and 4, the bean box 1 of the present embodiment is preferably a barrel structure, the bottom surface of the interior of the barrel structure is a plane, the center of the bottom surface is provided with a cutter hole 103, and the cutter body 12 for processing coffee powder is inserted into the cutter hole 103.

As shown in fig. 5 and 6, the lid 2 includes a lid top having a circular shape, the outer periphery of the lid top is bent downward to form a skirt portion 20 of the lid 2, the bottom surface of the lid top is an inner side surface 22 of the lid 2, and the height of the skirt portion 20 in a direction away from the second notch 21 is gradually increased so that the lid top is inclined. When the box cover 2 is covered on the top opening of the bean box 1, the longitudinal section of the box body structure formed by the bean box 1 and the box cover 2 is right trapezoid, and the box body structure is shown in fig. 2. When the cutter body 12 rotates in the bean box 1 to beat beans, the coffee beans and the coffee powder rotate at a position close to the upper part in the bean box 1 under the action of centrifugal force. During the process of discharging the powder from the bean box 1, the air flow generated by the cutter body 12 can flow out along the bottom surface of the cover top, so that the coffee powder on the surface of the cover top is blown out.

Preferably, the second notch 21 in the skirt portion 20 extends through to the top of the cap to avoid powder build-up on the portion of the skirt portion 20 above the second notch 21 during the extraction process.

In this embodiment, only the inner side surface 22 of the cover 2 is defined as an inclined surface. The outer surface of the cover 2 is not limited, and may be inclined or uneven.

Meanwhile, it is preferable that the inner side 22 of the cover 2 is a smooth surface, so that the possibility of the coffee powder sticking to the inner side 22 of the cover 2 is reduced.

The width of the first notch 100 in the skirt portion 20 of the present embodiment is the same as the width of the second notch 21 in the outer peripheral wall of the bean box 1, or may be slightly smaller than the width of the second notch 21 in the outer peripheral wall of the bean box 1.

Further, the second notch 21 on the bean box 1 of the present embodiment does not penetrate to the bottom end of the outer peripheral wall of the bean box 1. Since the coffee beans and the coffee grounds are rotated at a position near the upper side in the bean box 1 when the cutter body 12 in the bean box 1 is beating beans, the second notch 21 can effectively discharge the coffee grounds without penetrating to the bottom end of the outer peripheral wall of the bean box 1. Compared with the transmission mode that the powder outlet is formed in the bottom of the peripheral wall of the bean box 1, the second notch 21 is convenient to process.

As shown in fig. 4, in some embodiments, the inner peripheral wall of the bean box 1 includes a cambered surface section 101 and a straight surface section 102 along the circumferential direction thereof, the end of the cambered surface section 101 and the head end of the straight surface section 102 are joined to form the inner peripheral wall surface of the bean box 1, and the head end of the cambered surface section 101 and the end of the straight surface section 102 respectively form two opposite sides of the first notch 100. It is also understood that the free ends of the curved surface segments 101 and the straight surface segments 102 form two opposite sides of the first gap 100, respectively.

The cambered surface section 101 of the embodiment is used for being arranged around the cutter body 12 in the bean box 1, the straight surface section 102 is tangential to the cambered surface section 101, so that coffee powder can be smoothly discharged along the tangential direction of the rotating area of the cutter body 12 in the bean box 1 powder discharging process, and the powder discharging efficiency is improved.

In some embodiments, the outer peripheral wall of the bean box 1 protrudes outwards with a middle channel 3 connected with the first notch 100, and the middle channel 3 is provided with two opposite first side wall surfaces 30 and second side wall surfaces 31, wherein the first side wall surfaces 30 are connected with the free ends of the cambered surface sections 101, and the second side wall surfaces 31 are connected with the free ends of the straight surface sections 102.

Since the coffee powder is discharged along the tangential direction of the rotating area of the cutter body 12, the coffee powder can be directly beaten on the first side wall surface 30 after passing through the powder outlet, and the coffee powder is easily accumulated on the first side wall surface 30 after long-time powder discharge, so that the included angle between the first side wall surface 30 and the straight surface section 102 area in the bean box 1 is parallel or less than 20 degrees, and the air flow generated by the cutter body 12 can directly blow off the coffee powder on the first side wall surface 30 when blowing to the first side wall surface 30, thereby avoiding the problem of powder accumulation on the first side wall surface 30.

As shown in fig. 2, in some embodiments, the bean grinding bin assembly further includes a powder outlet channel 4, wherein an inlet of the powder outlet channel 4 is communicated with an outlet of the intermediate channel 3, the powder outlet channel 4 is bent downward such that an outlet thereof is downward, and a funnel assembly 11 is generally placed below the outlet of the powder outlet channel 4 to receive processed coffee grounds.

Not only the powder outlet channel 4 is bent downwards, but also the middle channel 3 connecting the powder outlet channel 4 and the powder outlet is bent downwards, so that the coffee powder generated in the bean box 1 always flows downwards after passing through the powder outlet and finally is discharged through the outlet of the powder outlet channel 4, the powder outlet efficiency of the coffee powder is improved, and the problem of powder accumulation of the coffee powder in the powder outlet channel 4 is avoided.

Preferably, the shorter the length of the intermediate channel 3 in this embodiment, the better so that the coffee powder coming out through the powder outlet can directly and quickly enter the powder outlet channel 4 after passing through the intermediate channel 3.

As shown in fig. 9-11, in some embodiments, the bean grinding bin assembly further includes a first shutter 5 and a second shutter 6, the first shutter 5 being disposed within the outlet channel 4 near its entrance, the second shutter 6 being disposed outside the outlet channel 4 near its exit, the first shutter 5 and the second shutter 6 each being movable relative to the outlet channel 4 to open or close its entrance and exit, respectively. In the process of beating beans by rotation, the cutter body 12 in the bean box 1 can close the outlet of the powder outlet channel 4 through the second masking door 6, so that steam in the funnel assembly 11 is prevented from entering the powder outlet channel 4 and the bean box 1, and the problem that residual coffee powder in the bean box 1 is wet and tightly stuck, is easy to deteriorate and increases cleaning difficulty is solved.

The first shutter 5 of the embodiment is rotatably arranged in the powder outlet channel 4, and the first shutter 5 can be screwed into the middle channel 3 when rotating clockwise, so that the inlet of the powder outlet channel 4 and the powder outlet on the bean box 1 are simultaneously closed; the first shutter 5 can be rotated out of the middle passage 3 when rotated in the counterclockwise direction, thereby simultaneously opening the inlet of the powder discharging passage 4 and the powder discharging port of the bean box 1, see fig. 2.

As further shown in fig. 2, the first shutter 5 of the present embodiment is in a vertical state when the powder outlet is closed; when the powder outlet is opened, the coffee powder outlet is in an inclined state, so that the coffee powder discharged from the bean box 1 can flow out directly towards the direction of the powder outlet by virtue of the guiding effect of the first masking door 5, and the powder outlet efficiency of the coffee powder is ensured.

Optionally, the second shutter 6 of the present embodiment is slidably disposed outside the powder discharge channel 4, and the second shutter 6 can slide with respect to the powder discharge channel 4 to open or close the outlet of the powder discharge channel 4. Of course, the second shutter 6 may also open or close the outlet of the powder outlet passage 4 by other movement means, such as rotation as the first shutter 5.

As shown in fig. 7 to 11, in some embodiments, the bean grinding box assembly further includes a second motor 8 and a link mechanism 7, the link mechanism 7 is connected to the first shutter 5 and the second shutter 6 respectively, the second motor 8 is connected to the link mechanism 7, and the second motor 8 is used for driving the link mechanism 7 to drive the first shutter 5 and the second shutter 6 to move simultaneously.

It will be appreciated that if the first shutter 5 moves in a rotational manner and the second shutter 6 moves in a sliding manner, the motor may drive the linkage 7 to simultaneously rotate the first shutter 5 and slide the second shutter 6.

Further, in some embodiments, the bean grinding box assembly further includes a controller (not shown) electrically connected to the first motor 10 and the second motor 8, respectively, for controlling the operation time period of the first motor 10, and controlling the second motor 8 to be started when the first motor 10 is operated for a first time period.

The operation time of the first motor 10 determines the fineness of the ground coffee, so that different fineness of the coffee corresponds to different operation time of the first motor 10.

The link mechanism 7 and the second motor 8 of the present embodiment are respectively located outside the powder outlet channel 4 and the bean box 1, so that the movement of the two doors can be conveniently controlled.

The link mechanism 7 includes a first link 70 and a second link 71, the first link 70 is connected to the rotation shafts of the first shutter 5 and the second motor 8, respectively, and when the rotation shaft of the second motor 8 rotates, the first link 70 and the first shutter 5 can be driven to rotate simultaneously. The first end of the second connecting rod 71 is connected with the first connecting rod 70, and the second end is fixedly connected with the second door 6, so that the first connecting rod 70 can drive the second connecting rod 71 and the second door 6 to synchronously slide when rotating, and the rotary motion of the first connecting rod 70 is converted into the sliding motion of the second door 6, so that the second door 6 is opened and closed.

In some embodiments, a sliding groove is formed on the rod body of the first link 70, a convex column is formed at the first end of the second link 71, and the convex column penetrates through the sliding groove, so that when the first link 70 rotates, the second link 71 and the second shutter 6 can move along the sliding groove.

As shown in fig. 9, the bean grinding box assembly of the present embodiment further includes a bracket 9. The bean box 1, the second motor 8 and the second shutter 6 are respectively arranged on the bracket 9.

Through hole 90 on support 9, go out powder passageway 4 and wear to locate in the through hole 90, be used for accepting the funnel subassembly 11 of coffee powder and can place the below of through hole 90 on support 9, go out the coffee powder that powder passageway 4 discharged and can enter into funnel subassembly 11 through hole 90.

Further, the bottom of the bracket 9 is provided with supporting seats 91 on both sides of the through hole 90, respectively, the second shutter 6 is slidably provided on both supporting seats 91 and is movable on the supporting seats 91 to move into and out of right under the powder discharge passage 4 to close the outlet thereof or to move out of right under the powder discharge passage 4 to open the outlet thereof, fig. 10 shows a state in which the second shutter 6 is moved out of right under the powder discharge passage 4, and fig. 11 shows a state in which the second shutter 6 is moved into and out of right under the powder discharge passage 4.

As shown in fig. 9, 10 and 11, opposite sides of the two supporting seats 91 in the embodiment are respectively provided with a guide rail 92 formed by recessing downwards, bottom surfaces of the two guide rails 92 are respectively provided with a plurality of ribs 93 at intervals along the length direction, and top surfaces of the ribs 93 may be cambered surfaces. Opposite sides of the second shutter 6 can be placed in two guide rails 92 and can slide on a plurality of ribs 93 in the guide rails 92. This simple structure is convenient for install the second and is covered door 6, and can reduce the area of contact of guide rail 92 and second and cover door 6 bottom surface through a plurality of fins 93, and then reduces the frictional force when sliding.

The supporting seat 91 of the present embodiment may be integrally formed with the bracket 9, or may be two separate parts, which are detachably connected together.

The embodiment of the utility model also provides a coffee machine, which at least comprises a machine body, a funnel assembly 11 and the bean grinding box assembly in the embodiment, wherein the bean grinding box assembly is arranged on the machine body.

The above embodiments are only exemplary embodiments of the present utility model and are not intended to limit the present utility model, the scope of which is defined by the claims. Various modifications and equivalent arrangements of this utility model will occur to those skilled in the art, and are intended to be within the spirit and scope of the utility model.

Claims (9)

1. A bean grinding bin assembly, characterized in that the bean grinding bin assembly comprises:

the top of the bean box (1) is open, and a first notch (100) penetrating to the top end of the bean box (1) is formed in the peripheral wall of the bean box;

the bean grinding mechanism comprises a cutter body (12) arranged in the bean box (1) and a first motor (10) for driving the cutter body (12) to rotate;

the box cover (2) is covered on the top opening of the bean box (1), the inner side surface (22) of the box cover (2) is an inclined surface, and the inclined surface gradually rises from one side close to the first notch (100) to one side far away from the first notch (100); the outer periphery of the box cover (2) is downwards bent to form a skirt edge part (20) which is butted with the end face of the top open end of the bean box (1), a second notch (21) which is upwards opened to be close to the top of the box cover (2) from the lower edge of the skirt edge part (20) is arranged on the skirt edge part (20), and the first notch (100) and the second notch (21) are butted to form a powder outlet.

2. A bean-grinding box assembly according to claim 1, characterized in that the skirt portion (20) of the box cover (2) is gradually raised in height in a direction away from the first notch (100) so that the box cover (2) covers the top opening of the bean box (1) in an inclined state.

3. A bean grinding box assembly as claimed in claim 1, wherein the inner wall surface of the bean box (1) comprises an arc surface section (101) and a straight surface section (102) along the circumferential direction of the inner wall surface, the straight surface section (102) is tangential to the arc surface section (101), the free end of the straight surface section (102) and the free end of the arc surface section (101) respectively form two opposite side edges of the powder outlet, the outer circumferential wall of the bean box (1) protrudes outwards to form an intermediate channel (3) communicated with the powder outlet, the intermediate channel (3) is provided with a first side wall surface (30) connected with the free end of the arc surface section (101) and a second side wall surface (31) connected with the free end of the straight surface section (102), and an included angle between the first side wall surface (30) and the straight surface section (102) is smaller than 20 degrees.

4. A bean grinding bin assembly as claimed in claim 3, wherein said bean grinding bin assembly further comprises:

and the inlet of the powder outlet channel (4) is communicated with the outlet of the middle channel (3), and the powder outlet channel (4) is bent downwards so that the outlet of the powder outlet channel is downwards.

5. A bean grinding bin assembly as claimed in claim 4, wherein said bean grinding bin assembly further comprises:

a first shutter (5) rotatably provided in the powder discharge passage (4), the first shutter (5) being rotatable in a direction away from the intermediate passage (3) to open an inlet of the powder discharge passage (4) or in a direction close to the intermediate passage (3) to close an inlet of the powder discharge passage (4);

the second shutter (6) is arranged outside the powder outlet channel (4) and can slide relative to the powder outlet channel (4) to open or close the outlet of the powder outlet channel (4).

6. A bean-grinding bin assembly as claimed in claim 5, wherein said bean-grinding bin assembly further comprises:

a link mechanism (7) which connects the first shutter (5) and the second shutter (6) respectively;

the second motor (8) is in transmission connection with the connecting rod mechanism (7), and the second motor (8) is used for driving the connecting rod mechanism (7) to simultaneously drive the first shutter (5) to rotate and the second shutter (6) to slide;

the controller is electrically connected with the first motor (10) and the second motor (8) respectively, and is used for controlling the operation time length of the first motor (10) and controlling the second motor (8) to start when the first motor (10) operates for a first time length.

7. A bean-grinding bin assembly according to claim 6, characterized in that the linkage (7) comprises:

the first connecting rod (70) is connected with the rotating shaft of the second motor (8) and the first door (5), and the second motor (8) can drive the first connecting rod (70) and the first door (5) to synchronously rotate;

the first end of the second connecting rod (71) is connected with the first connecting rod (70), the second end of the second connecting rod (71) is fixedly connected with the second shutter (6), and the second connecting rod (71) and the second shutter (6) can be driven to synchronously slide relative to the powder outlet channel (4) when the first connecting rod (70) rotates.

8. A bean-grinding bin assembly according to claim 1, characterized in that the first notch (100) does not extend through to the bottom end of the peripheral wall of the bean bin (1).

9. A coffee machine, characterized in that it further comprises a bean grinding chamber assembly according to any one of claims 1-8.