CN117502908A

CN117502908A - Coffee machine

Info

Publication number: CN117502908A
Application number: CN202311604477.6A
Authority: CN
Inventors: 陈志球; 叶嘉豪; 邹晓敏
Original assignee: Yilipu Group Co ltd
Current assignee: Yilipu Group Co ltd
Priority date: 2023-11-28
Filing date: 2023-11-28
Publication date: 2024-02-06

Abstract

The invention relates to the technical field of coffee machines, in particular to a coffee machine. The coffee machine comprises a mounting plate, a powder sealing sheet, a shower head and a driving piece, wherein the mounting plate is arranged in a shell of the coffee machine and is provided with a water outlet and a powder outlet. The powder sealing sheet is arranged on the bottom surface of the mounting plate in a sliding manner and is provided with a grinding position for opening the powder outlet and an extraction position for sealing the powder outlet. The shower head is provided with a plurality of water spray holes, is detachably and rotatably arranged on the bottom surface of the mounting plate, and is provided with an avoiding position disconnected with the water outlet and an extraction position communicated with the water outlet. The driving piece is arranged on the mounting plate and is in transmission connection with the powder sealing piece and the shower head respectively so as to synchronously drive the powder sealing piece and the shower head to mutually approach and jointly move to the extraction position, and the shower head is positioned under the powder sealing piece; or driving the powder sealing sheet and the shower to be far away from each other so that the powder sealing sheet moves to the grinding position and the shower moves to the avoiding position. The coffee machine shortens the travel space of the shower head and the powder sealing sheet, and the shower head can be detached and cleaned.

Description

Coffee machine

Technical Field

The invention relates to the technical field of coffee machines, in particular to a coffee machine.

Background

An American coffee machine is a device for brewing coffee, and the working principle of the American coffee machine is that hot water or steam is sprayed on coffee powder to extract coffee.

The existing American coffee machine is internally provided with a shower head with water spray holes so as to uniformly and completely soak the coffee powder by hot water. The shower head and the powder sealing sheet of the coffee powder outlet are integrated together, and when the beans are ground to be dusted, the shower head and the powder sealing sheet synchronously and co-directionally move so as to open the powder outlet; when coffee is brewed, the shower head and the powder sealing sheet are reset to close the powder outlet, and at the moment, the shower head is positioned right above the filter screen of the coffee basket assembly and sprays hot water to the coffee powder to extract the coffee. Because the volume of gondola water faucet is great, if remove with sealing the powder piece and open out the powder mouth jointly, need reserve longer stroke space, lead to gondola water faucet and sealing the powder piece and need occupy great inner space, further increased the whole volume of coffee machine. Meanwhile, when coffee is brewed and extracted, powder is easy to raise or splash when hot water is sprayed on the coffee powder, so that the coffee powder is easy to adhere to a shower, peculiar smell is generated in the long-term use process of the shower, and the coffee brewing and extracting effect is affected.

Disclosure of Invention

The invention aims to provide a coffee machine, which is used for shortening the stroke space of a shower head and a powder sealing sheet, reducing the whole volume of the coffee machine, realizing the detachable cleaning of the shower head and improving the extraction and brewing effects of coffee.

The technical scheme adopted by the invention is as follows:

a coffee machine, comprising:

the mounting plate is arranged in the shell of the coffee machine and is provided with a water outlet and a powder outlet;

the powder sealing sheet is arranged on the bottom surface of the mounting plate in a sliding manner and is provided with a grinding position for opening the powder outlet and an extraction position for sealing the powder outlet;

the shower head is provided with a plurality of water spray holes, is detachably and rotatably arranged on the bottom surface of the mounting plate, and is provided with an avoidance position disconnected with the water outlet and an extraction position communicated with the water outlet;

the driving piece is arranged on the mounting plate and is respectively in transmission connection with the powder sealing piece and the shower head so as to synchronously drive the powder sealing piece and the shower head to mutually approach and jointly move to the extraction position, and the shower head is positioned under the powder sealing piece; or driving the powder sealing sheet and the shower to be far away from each other, so that the powder sealing sheet moves to the grinding position and the shower moves to the avoiding position.

Preferably, a rotating shaft is fixedly arranged on the bottom surface of the mounting plate; the shower head is detachably sleeved on the rotating shaft and can rotate around the rotating shaft between the avoiding position and the extraction position.

As a preferred solution, the shower head includes:

the bottom shell comprises a main shell body and a supporting arm, the main shell body is provided with a water inlet which can be communicated with the water outlet, the supporting arm is outwards extended from the main shell body, the supporting arm is rotatably sleeved on the rotating shaft, and the driving piece is in transmission connection with the supporting arm;

the surface cover is buckled on the main shell, and a plurality of water spraying holes are formed in the surface cover.

Preferably, the output end of the driving piece is connected with a first connecting rod, one of the first connecting rod and the supporting arm is provided with a first sliding hole, the other of the first connecting rod and the supporting arm is provided with a first guide pillar, and the first guide pillar is arranged in the first sliding hole in a sliding way.

Preferably, one of the main casing and the face cover is provided with a clamping arm, and the other of the main casing and the face cover is provided with a clamping groove, and the clamping arm is clamped in the clamping groove.

As the preferable scheme, the inner bottom surface circumference of face lid is provided with the drainage ring, face lid circumference lateral wall with the drainage ring encloses into the drainage passageway, the delivery port can with the drainage passageway intercommunication, at least part the hole for water spraying is located in the drainage ring, the drainage ring is provided with a plurality of incisions along circumference interval, the drainage passageway with the inside of drainage ring is through a plurality of the incision intercommunication.

As a preferable scheme, the inner bottom surface of the face cover is also provided with a diversion rib plate, and a diversion rib plate is circumferentially arranged on the outer edge of the part of the water spraying hole in the drainage ring.

Preferably, the inner bottom surface of the surface cover is an arc surface with a concave center.

As a preferable scheme, the output end of the driving piece is connected with a second connecting rod, one of the second connecting rod and the powder sealing sheet is provided with a second sliding hole, the other of the second connecting rod and the powder sealing sheet is provided with a second guide pillar, and the second guide pillar is slidably arranged in the second sliding hole in a penetrating mode.

As a preferable scheme, two guide plates are oppositely arranged on the bottom surface of the mounting plate, the guide plates and the mounting plate enclose a slideway, two ends of the slideway respectively extend to the grinding position and the extraction position, and the powder sealing sheet is slidably arranged in the two slideways.

The beneficial effects of the invention are as follows:

the coffee machine comprises a mounting plate, a powder sealing sheet, a shower head and a driving piece, wherein the driving piece synchronously drives the powder sealing sheet and the shower head to enable the powder sealing sheet and the shower head to be close to each other and jointly move to an extraction position, or drive the powder sealing sheet and the shower head to be far away from each other, so that the powder sealing sheet moves to a grinding position and the shower head moves to an avoiding position. The shower head and the powder sealing sheet are controlled to move in opposite directions respectively through the same driving piece, so that the structure is simplified, the stroke space of the shower head and the powder sealing sheet is shortened, the compactness of the internal structure of the coffee machine is realized, and the whole volume of the coffee machine is reduced. Meanwhile, the powder sealing sheet and the shower head are arranged to be independent parts, so that the shower head can be detached from the mounting plate and clean residual coffee powder in time, the coffee powder is prevented from being fermented to generate peculiar smell in long-term use of the shower head, and the cleanliness of the water spraying holes and the extraction brewing effect of coffee are improved.

Drawings

FIG. 1 is a schematic view of a coffee machine according to an embodiment of the present invention;

FIG. 2 is a schematic illustration of the top surface of a mounting plate in a housing of a coffee machine provided by an embodiment of the present invention;

FIG. 3 is a schematic view of the structure of the bottom surface of the mounting plate according to an embodiment of the present invention;

fig. 4 is a schematic structural view of the bottom surface of the mounting plate after removing the shower according to the embodiment of the present invention;

fig. 5 is a schematic structural view of a shower head according to an embodiment of the present invention;

fig. 6 is a schematic structural diagram of a face cover according to an embodiment of the present invention.

The parts in the figures are named and numbered as follows:

10. a housing; 20. a water tank assembly; 30. a bean box assembly; 40. a glass; 50. a coffee basket assembly; 60. a control panel; 70. a water pipe;

1. a mounting plate; 11. a water outlet; 12. a rotating shaft; 13. a guide plate; 14. a powder outlet; 2. sealing powder sheets; 21. a second guide post; 3. a shower head; 31. a bottom case; 310. a water inlet; 311. a main housing; 312. a support arm; 3121. a first slide hole; 313. a clamping groove; 32. a face cover; 320. a water spraying hole; 321. a clasp arm; 322. a drainage ring; 3220. a drainage channel; 3221. a notch; 323. a diversion rib plate; 4. a driving member; 5. a first link; 51. a first guide post; 6. and a second link.

Detailed Description

In order to make the technical problems solved, the technical scheme adopted and the technical effects achieved by the invention more clear, the technical scheme of the invention is further described below by a specific embodiment in combination with the attached drawings. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting thereof. It should be further noted that, for convenience of description, only some, but not all of the drawings related to the present invention are shown.

In the description of the present invention, unless explicitly stated and limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.

In the present invention, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "right", "left", and the like are orientation or positional relationships based on those shown in the drawings, merely for convenience of description and simplicity of operation, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the invention. Furthermore, the terms "first," "second," and the like, are used merely for distinguishing between descriptions and not for distinguishing between them.

The technical scheme of the invention is further described below by the specific embodiments with reference to the accompanying drawings.

As shown in fig. 1, the present embodiment proposes a coffee maker, which is an american coffee maker, but is not limited thereto. Specifically, the coffee maker includes a housing 10, a water tank assembly 20, a bean box assembly 30, a glass 40, a coffee basket assembly 50, and a control panel 60. A glass 40 is placed on the base of the housing 10. The bean box assembly 30 includes a bean box and a bean box cover, in which the coffee beans are placed. The coffee basket assembly 50 has a screen to filter coarse particles of coffee grounds. The coffee beans are ground into coffee powder and then filtered by a filter screen to fall into the glass 40. The water tank assembly 20 is used to heat and provide hot water into the glass 40 to brew coffee grounds to extract coffee. The control panel 60 is used to adjust the brewing extraction process of the coffee machine, such as the grind size of the coffee beans, the brew water volume, the brew time, etc. Coffee machines are currently ripe products and the various components and working processes of the coffee machine are not described in detail.

In order to solve the above problems, as shown in fig. 2 and 3, the coffee machine further comprises a mounting plate 1, a powder sealing sheet 2, a shower head 3 and a driving member 4, wherein the mounting plate 1 is arranged in a shell 10 of the coffee machine, and the mounting plate 1 is provided with a water outlet 11 and a powder outlet 14. The powder sealing sheet 2 is slidably arranged on the bottom surface of the mounting plate 1 and is provided with a grinding position for opening the powder outlet 14 and an extraction position for sealing the powder outlet 14. The shower head 3 is provided with a plurality of water spray holes 320, and the shower head 3 is detachably and rotatably arranged on the bottom surface of the mounting plate 1 and is provided with an avoiding position disconnected with the water outlet 11 and an extraction position communicated with the water outlet 11. The driving piece 4 is arranged on the mounting plate 1, the driving piece 4 is respectively in transmission connection with the powder sealing piece 2 and the shower head 3 so as to synchronously drive the powder sealing piece 2 and the shower head 3 to mutually approach and jointly move to the extraction position, and the shower head 3 is positioned under the powder sealing piece 2; or, the powder sealing sheet 2 and the shower head 3 are driven to be far away from each other, so that the powder sealing sheet 2 moves to the grinding position and the shower head 3 moves to the avoiding position.

In this embodiment, the driving member 4 synchronously drives the powder sealing sheet 2 and the shower head 3, so that the powder sealing sheet 2 and the shower head 3 are close to each other and move to the extraction position together, or drives the powder sealing sheet 2 and the shower head 3 to move away from each other, so that the powder sealing sheet 2 moves to the grinding position and the shower head 3 moves to the avoiding position. The shower head 3 and the powder sealing sheet 2 are controlled to move in opposite directions respectively through the same driving piece 4, so that the structure is simplified, the stroke space of the shower head 3 and the powder sealing sheet 2 is shortened, the compactness of the internal structure of the coffee machine is realized, and the whole volume of the coffee machine is reduced. Meanwhile, the powder sealing sheet 2 and the shower head 3 are arranged to be independent parts, so that the shower head 3 can be detached from the mounting plate 1 and clean residual coffee powder in time, the coffee powder is prevented from being fermented to generate peculiar smell in long-term use of the shower head 3, and the cleanliness of the water spraying holes 320 and the extraction and brewing effects of coffee are improved.

It should be noted that, when the powder sealing sheet 2 moves from the extraction position toward the grinding position, the shower head 3 rotates from the extraction position toward the avoiding position in synchronization, the movement directions of the powder sealing sheet 2 and the shower head 3 are opposite (the two are far away from each other), and when the powder sealing sheet 2 moves to the grinding position, the shower head 3 rotates to the avoiding position at the same time. Likewise, when the powder sealing sheet 2 moves from the grinding position toward the extraction position, the shower head 3 rotates from the avoiding position toward the extraction position in synchronization, the movement directions of the powder sealing sheet 2 and the shower head 3 are opposite (the two are close to each other), and when the powder sealing sheet 2 moves to the extraction position, the shower head 3 rotates to the extraction position at the same time.

As shown in fig. 2, the upper surface of the mounting plate 1 is provided with a water pipe 70, and both ends of the water pipe 70 are respectively communicated with the water tank assembly 20 and the water outlet 11 (shown in fig. 4) of the mounting plate 1, and the water tank assembly 20 conveys hot water to the water outlet 11 through the water pipe 70. The driving member 4 is a motor which is small in size to achieve a compact installation on the mounting plate 1.

As shown in fig. 3 and 4, the bottom surface of the mounting plate 1 is fixedly provided with a rotating shaft 12, and the shower head 3 is detachably sleeved on the rotating shaft 12 and can rotate between an avoiding position and an extraction position around the rotating shaft 12. The shower head 3 can be detached from the rotating shaft 12, so that residual coffee powder can be cleaned in time, and the problem that the coffee powder accumulates on the shower head 3 for a long time to cause the fermentation to generate peculiar smell is avoided.

Specifically, the shower head 3 includes a bottom shell 31 and a cover 32, the bottom shell 31 includes a main housing 311 and a supporting arm 312, the main housing 311 is provided with a water inlet 310 which can be communicated with the water outlet 11, the main housing 311 is provided with a supporting arm 312 which extends outwards, the supporting arm 312 is rotationally sleeved on the rotating shaft 12, and the driving piece 4 is in transmission connection with the supporting arm 312. The cover 32 is fastened to the main housing 311, and a plurality of water spraying holes 320 are formed in the cover 32. The face cover 32 is buckled with the main shell 311 to form a shower body, and the driving piece 4 drives the support arm 312 to rotate around the rotating shaft 12 in the direction indicated by the curved arrow in fig. 3, so as to drive the shower body to switch between the avoiding position and the extracting position.

As shown in fig. 3 and 4, the output end of the driving member 4 is connected with a first connecting rod 5, one of the first connecting rod 5 and the supporting arm 312 is provided with a first sliding hole 3121, the other of the first connecting rod 5 and the supporting arm 312 is provided with a first guide post 51, and the first guide post 51 is slidably disposed in the first sliding hole 3121. The end of the support arm 312 far away from the main housing 311 in this embodiment is provided with a first sliding hole 3121, the first sliding hole 3121 is a kidney-shaped hole, one end of the first link 5 is correspondingly provided with a first guide post 51, and when the first link 5 driven by the driving member 4 rotates, the first guide post 51 slides in the first sliding hole 3121, thereby driving the shower body to rotate between the avoiding position and the extracting position. In other embodiments, the end of the supporting arm 312 away from the main housing 311 is provided with a first guide post 51, and one end of the first connecting rod 5 is correspondingly provided with a first sliding hole 3121.

As shown in fig. 3 and 4, the output end of the driving member 4 is connected with a second connecting rod 6, one of the second connecting rod 6 and the powder sealing sheet 2 is provided with a second sliding hole, the other of the second connecting rod 6 and the powder sealing sheet 2 is provided with a second guide post 21, and the second guide post 21 is slidably arranged in the second sliding hole in a penetrating manner. In this embodiment, a second sliding hole is formed at one end of the second connecting rod 6, the second sliding hole is a kidney-shaped hole, a second guide post 21 is disposed on one side of the powder sealing sheet 2 close to the second connecting rod 6, and when the driving piece 4 drives the second connecting rod 6 to rotate, the second guide post 21 slides in the second sliding hole, so as to drive the shower main body to move between the grinding position and the extraction position along the direction indicated by the straight arrow in fig. 3. In other embodiments, a second guide post 21 is provided at one end of the second connecting rod 6, and a second sliding hole is provided at the end of the powder sealing sheet 2 near the second connecting rod 6.

In this embodiment, the driving member 4 is fixed on the top surface of the mounting plate 1, and the output end of the driving member 4 extends to the bottom surface of the mounting plate 1 and is connected to the first connecting rod 5 and the second connecting rod 6 respectively, so as to synchronously drive the first connecting rod 5 and the second connecting rod 6 to rotate, thereby simultaneously controlling the shower head 3 and the powder sealing sheet 2 to move in opposite directions through a single driving member 4, and the operation is simple and convenient.

Further, as shown in fig. 4, two guide plates 13 are oppositely arranged on the bottom surface of the mounting plate 1, the guide plates 13 and the mounting plate 1 enclose a slideway, two ends of the slideway extend to a grinding position and an extraction position respectively, and the powder sealing sheet 2 is slidably arranged in the two slideways. The slide way plays a role in guiding and limiting the movement process of the powder sealing sheet 2 between the grinding position and the extraction position, and improves the movement stability of the powder sealing sheet 2.

As shown in fig. 5, one of the main housing 311 and the face cover 32 is provided with a locking arm 321, and the other of the main housing 311 and the face cover 32 is provided with a locking groove 313, and the locking arm 321 is locked in the locking groove 313. Through the joint cooperation of buckle arm 321 and draw-in groove 313, improved the dismouting efficiency of main casing 311 and face lid 32, be convenient for separate clean with gondola water faucet 3 quick split, improved clean efficiency and clean quality.

Two clamping grooves 313 are circumferentially arranged on the main housing 311 at intervals, and two clamping arms 321 are correspondingly arranged on the circumferential side wall of the face cover 32 to form two clamping matching structures, so that the assembly strength and stability of the main housing 311 and the face cover 32 are improved. In other embodiments, the main housing 311 is provided with a locking arm 321, the circumferential side wall of the cover 32 is correspondingly provided with a locking groove 313, and the number and positions of the locking arm 321 and the locking groove 313 can be flexibly adjusted, which is not limited herein.

As shown in fig. 5, when the shower head 3 is located at the extraction position, the water inlet 310 on the main housing 311 is communicated with the water outlet 11 of the mounting plate 1, so that hot water can flow into the cavity enclosed by the main housing 311 and the face cover 32 through the water pipe 70, the water outlet 11 and the water inlet holes in sequence, and then is sprayed onto the coffee powder of the glass 40 through the plurality of water spray holes 320, thereby soaking and extracting coffee.

As shown in fig. 6, a drainage ring 322 is circumferentially arranged on the inner bottom surface of the surface cover 32, a drainage channel 3220 is surrounded by the side wall of the surface cover 32 and the drainage ring 322, the water outlet 11 can be communicated with the drainage channel 3220, at least part of the water spraying holes 320 are located in the drainage ring 322, a plurality of cuts 3221 are circumferentially arranged on the drainage ring 322 at intervals, and the drainage channel 3220 is communicated with the inside of the drainage ring 322 through the plurality of cuts 3221. The hot water flows along the circumferential direction of the face cover 32 through the drainage channel 3220 and flows to the water spraying holes 320 in the drainage ring 322 through the cuts 3221, so that the hot water is uniformly distributed on the face cover 32 and uniformly sprayed through the water spraying holes 320, and the phenomenon that the hot water is concentrated to a single position to cause insufficient coffee extraction is avoided.

Further, the inner bottom surface of the face cover 32 is further provided with a diversion rib plate 323, and a part of the outer edge of the water spraying hole 320 in the drainage ring 322 is circumferentially provided with the diversion rib plate 323. The diversion rib plate 323 is approximately a semicircular plate, and the semicircular plate is concentric with the water spraying hole 320 and surrounds the circumferential edge of the water spraying hole 320, so that the diversion rib plate 323 has a certain blocking effect on the water inflow of the water spraying hole 320, and the phenomenon that the water of the water spraying hole 320 close to the drainage channel 3220 flows too much and the water of the water spraying hole 320 far from the drainage channel 3220 flows too little is avoided. Meanwhile, the outer side of the diversion rib plate 323 has a certain guiding and drainage function on hot water, so that enough hot water can flow into the water spraying holes 320 positioned at the center of the face cover 32, the spraying quantity of the water spraying holes 320 at all positions in the drainage ring 322 is ensured to be approximately equal, and the spraying uniformity of the water spraying holes 320 is improved.

Further, the inner bottom surface of the face cover 32 is a circular arc surface with a concave center, namely the inner bottom surface of the face cover 32 is approximately spherical, so that the guiding and drainage effects can be achieved on hot water, the hot water can flow to the center position from the edge of the face cover 32 under the action of gravity, the spraying uniformity of the water spraying holes 320 is further improved, the coffee powder is completely soaked and extracted, and the taste of the coffee is guaranteed.

The above embodiments merely illustrate the basic principle and features of the present invention, and the present invention is not limited to the above embodiments, but may be varied and altered without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A coffee machine, comprising:

the mounting plate (1) is arranged in the shell (10) of the coffee machine, and the mounting plate (1) is provided with a water outlet (11) and a powder outlet (14);

the powder sealing sheet (2) is arranged on the bottom surface of the mounting plate (1) in a sliding manner and is provided with a grinding position for opening the powder outlet (14) and an extraction position for sealing the powder outlet (14);

the shower head (3) is provided with a plurality of water spray holes (320), and the shower head (3) is detachably and rotatably arranged on the bottom surface of the mounting plate (1) and is provided with an avoidance position disconnected with the water outlet (11) and an extraction position communicated with the water outlet (11);

the driving piece (4) is arranged on the mounting plate (1), the driving piece (4) is respectively in transmission connection with the powder sealing piece (2) and the shower head (3) so as to synchronously drive the powder sealing piece (2) and the shower head (3) to mutually approach and jointly move to the extraction position, and the shower head (3) is positioned under the powder sealing piece (2); or, the powder sealing sheet (2) and the shower head (3) are driven to be far away from each other, so that the powder sealing sheet (2) moves to the grinding position and the shower head (3) moves to the avoiding position.

2. A coffee machine according to claim 1, characterized in that the bottom surface of the mounting plate (1) is fixedly provided with a rotation shaft (12); the shower head (3) is detachably sleeved on the rotating shaft (12) and can rotate around the rotating shaft (12) between the avoiding position and the extraction position.

3. Coffee machine according to claim 2, characterized in that said gondola water faucet (3) comprises:

the bottom shell (31) comprises a main shell (311) and a supporting arm (312), wherein a water inlet (310) which can be communicated with the water outlet (11) is formed in the main shell (311), the supporting arm (312) is outwards extended from the main shell (311), the supporting arm (312) is rotationally sleeved on the rotating shaft (12), and the driving piece (4) is in transmission connection with the supporting arm (312);

the surface cover (32) is buckled on the main shell (311), and a plurality of water spraying holes (320) are formed in the surface cover (32).

4. A coffee machine according to claim 3, wherein the output end of the driving member (4) is connected with a first connecting rod (5), one of the first connecting rod (5) and the supporting arm (312) is provided with a first sliding hole (3121), the other of the first connecting rod (5) and the supporting arm (312) is provided with a first guide post (51), and the first guide post (51) is slidably arranged in the first sliding hole (3121).

5. A coffee machine according to claim 3, wherein one of the main housing (311) and the face cover (32) is provided with a snap arm (321), the other of the main housing (311) and the face cover (32) is provided with a snap groove (313), and the snap arm (321) is snapped into the snap groove (313).

6. A coffee machine as claimed in claim 3, wherein the inner bottom surface of said cover (32) is circumferentially provided with a drainage ring (322), the circumferential side wall of said cover (32) and said drainage ring (322) enclose a drainage channel (3220), said water outlet (11) is communicable with said drainage channel (3220), at least part of said water spouts (320) are located in said drainage ring (322), said drainage ring (322) is circumferentially provided with a plurality of slits (3221) at intervals, and said drainage channel (3220) is communicable with the inside of said drainage ring (322) through a plurality of said slits (3221).

7. The coffee machine according to claim 6, wherein the inner bottom surface of the face cover (32) is further provided with a diversion rib plate (323), and a part of the outer periphery of the water spraying hole (320) in the drainage ring (322) is circumferentially provided with the diversion rib plate (323).

8. A coffee machine according to claim 6, characterized in that the inner bottom surface of the cover (32) presents a central concave arc surface.

9. Coffee machine according to any one of claims 1 to 8, characterized in that the output end of the driving member (4) is connected with a second connecting rod (6), one of the second connecting rod (6) and the powder sealing sheet (2) is provided with a second sliding hole, the other of the second connecting rod (6) and the powder sealing sheet (2) is provided with a second guide pillar (21), and the second guide pillar (21) is slidably arranged in the second sliding hole in a penetrating way.

10. Coffee machine according to any one of claims 1 to 8, characterized in that the bottom surface of the mounting plate (1) is provided with two guide plates (13) opposite, the guide plates (13) and the mounting plate (1) enclose a slideway, two ends of the slideway extend to the grinding position and the extraction position respectively, and the powder sealing sheet (2) is arranged in the two slideways in a sliding way.