CN107049023B

CN107049023B - Brewing system of coffee machine

Info

Publication number: CN107049023B
Application number: CN201611025726.6A
Authority: CN
Inventors: 陈景静
Original assignee: Shanghai Baolutong Coffee Machine Co ltd
Current assignee: Shanghai Baolutong Coffee Machine Co ltd
Priority date: 2016-11-17
Filing date: 2016-11-17
Publication date: 2023-05-30
Anticipated expiration: 2036-11-17
Also published as: CN107049023A

Abstract

The invention relates to a brewing system of a coffee machine, which comprises a brewing bracket with a coffee outlet and a hydraulic cavity, a brewing chamber assembly and a brewing head assembly which are arranged in the brewing bracket, a rebound assembly which is arranged in the brewing bracket and is used for propping against the brewing head assembly, and a driving device which is arranged in the brewing bracket and is used for driving the brewing chamber assembly to move towards or away from the brewing head assembly. The coffee machine brewing system further comprises: the brewing device comprises a water tank, a cold water pipeline assembly connected with a hydraulic cavity of a brewing support, a hot water pipeline assembly connected with a brewing head assembly, and a water supply device used for supplementing water in the water tank into the cold water pipeline assembly or the hot water pipeline assembly. Compared with the prior art, as the coffee machine brewing system is used for brewing the compacted coffee powder directly through the hot water flowing out of the hot water pipeline component in the whole brewing process, the structure is simplified, the volume is reduced, and the coffee flowing out of the coffee outlet is ensured to be thicker.

Description

Brewing system of coffee machine

Technical Field

The invention relates to a coffee machine, in particular to a brewing system of the coffee machine.

Background

Full-automatic coffee machine, as an automatic brewing equipment for realizing functions of grinding, pressing, filling, brewing, removing residues and the like, has been widely used in families or business places.

However, in the prior art, the main working principle of the full-automatic coffee machine is to compact the coffee powder in the coffee machine through a related transmission mechanism, and to extract the essence in the coffee powder by instantly penetrating hot water through the compacted coffee powder. In addition, in the process of compacting coffee powder, the transmission mechanism of the full-automatic coffee machine in the prior art is difficult to ensure the whole air tightness of the coffee machine due to the existence of gaps in the process of mutually matching parts in the transmission mechanism.

Therefore, how to ensure that the coffee machine can produce rich coffee, simplify the structure of the coffee machine, reduce the volume of the coffee machine and improve the sealing performance of the coffee machine is a technical problem to be solved at present.

Disclosure of Invention

The invention aims to provide a brewing system of a coffee machine, which can produce intense coffee, simplify the structure of the coffee machine and reduce the volume of the coffee machine.

In order to achieve the above object, an embodiment of the present invention provides a brewing system of a coffee machine, comprising a brewing bracket with a coffee outlet and a hydraulic cavity, a brewing chamber assembly and a brewing head assembly arranged in the brewing bracket, a rebound assembly arranged in the brewing bracket and used for supporting the brewing head assembly, and a driving device arranged in the brewing bracket and used for driving the brewing chamber assembly to move towards or away from the brewing head assembly;

the coffee machine brewing system further comprises: the brewing device comprises a water tank, a cold water pipeline assembly connected with a hydraulic cavity of the brewing support, a hot water pipeline assembly connected with the brewing head assembly, and a water supply device used for supplementing water in the water tank into the cold water pipeline assembly or the hot water pipeline assembly;

the water supply device is started after the brewing chamber component moves to a preset position towards one side of the brewing head component, is communicated with the cold water pipeline component and is disconnected with the hot water pipeline component, water in the water tank is supplied into the hydraulic cavity through the cold water pipeline component by the water supply device, the brewing head component is driven to move towards one side of the brewing chamber component, the rebound component is compressed, the brewing head component is matched with the brewing chamber component to gradually compact coffee powder placed in the brewing chamber component, after the brewing head component moves to the preset position, the water supply device is communicated with the hot water pipeline component and is disconnected with the cold water pipeline component, water in the water tank is supplied into the compacted coffee powder through the hot water pipeline component by the water supply device, and the brewed coffee flows out of a coffee outlet of the brewing support.

Compared with the prior art, the embodiment of the invention has the advantages that the brewing chamber assembly in the brewing system of the coffee machine can move towards or away from one side of the brewing head assembly under the action of the driving device, and the brewing head assembly can move towards one side of the brewing chamber assembly under the action of the water pressure in the hydraulic cavity of the brewing bracket, so that the compaction of coffee powder in the brewing chamber assembly is realized through the interaction of the brewing chamber assembly and the brewing head assembly. Meanwhile, after the water supply device moves to the preset position, the water supply device is disconnected with the cold water pipeline assembly, and water in the water tank flows into the brewing chamber assembly through the hot water pipeline assembly, so that the coffee machine brewing system can directly brew compacted coffee powder through hot water flowing out of the hot water pipeline assembly in the whole brewing process, the structure is simplified, and the volume is reduced. And as the coffee powder is brewed after being compacted, the coffee powder can be fully extracted in the brewing process, and the coffee flowing out of the coffee outlet is ensured to be thicker.

In addition, the brewing chamber assembly comprises a brewing chamber main body for storing coffee powder and a worm connected with the brewing chamber main body; wherein, the brewing chamber main body is provided with a feed inlet for throwing coffee powder, and the worm is internally provided with a hollow structure which is respectively communicated with the brewing chamber main body and the coffee outlet of the brewing bracket; the driving device comprises a motor, a driving gear sleeved on a main shaft of the motor, a driven gear meshed with the driving gear, and a gear ring sleeved on a worm of the brewing chamber assembly; wherein the outer race of the ring gear meshes with the driven gear and the inner race meshes with the worm. Because the brewing chamber assembly consists of the brewing chamber main body and the worm, and the worm is meshed with the inner ring of the gear ring in the driving device, the driving gear in the driving device is meshed with the driven gear, and the driven gear is meshed with the outer ring of the gear ring, so that the motor in the driving device can realize the movement of the brewing chamber main body towards or away from one side of the brewing assembly when the motor in the driving device rotates positively and negatively, and the compaction of coffee powder is facilitated. And the brewing chamber main body is provided with the feed inlet, and the worm is of a hollow structure and is respectively communicated with the brewing chamber main body and the coffee outlet, so that the brewed coffee can smoothly flow out of the coffee outlet.

In addition, in order to meet the design and assembly requirements in practical application, the driven gear comprises a first wheel body meshed with the driving gear and a second wheel body meshed with the outer ring of the gear ring.

In addition, the brewing bracket is also provided with a coffee powder throwing port; the coffee powder throwing port is used for being communicated with the feeding port on the brewing chamber assembly when the brewing chamber assembly moves to a preset position towards one side of the brewing head assembly. Through the cooperation of the coffee powder throwing port and the feeding port, the coffee powder can be conveniently thrown.

In addition, in order to realize the compaction of the coffee powder by the brewing head assembly, the brewing head assembly comprises a brewing head part with a water supply channel and a brewing head tail part which is connected with the brewing head main body and used for pushing the brewing head main body to move towards one side of the brewing chamber assembly under the action of water pressure.

In addition, the water supply channel comprises a channel body formed in the head part of the brewing head, a channel inlet formed on the outer edge surface of the head part of the brewing head, and a channel outlet formed on the end surface of the head part of the brewing head; the channel inlet and the channel outlet are respectively communicated with the channel body, the channel inlet is connected with the hot water pipeline component, and the channel outlet is opposite to the brewing chamber component. Because the hot water pipeline component is connected with the channel inlet of the head part of the brewing head, the channel inlet is connected with the channel body in the head part of the brewing head, and the channel body is connected with the channel outlet of the end face of the head part of the brewing head, when the coffee brewing machine is in actual use, hot water in the hot water pipeline component can flow into the brewing chamber component from the channel outlet on the end face of the head part of the brewing head after sequentially passing through the channel inlet and the channel body, so that the brewing of the compacted coffee powder is realized under the condition that the movement of the brewing head in the brewing bracket is not influenced.

In addition, in order to promote the brewing effect of the coffee powder, the channel outlets comprise N; wherein N is a natural number greater than 1 and is distributed around the end face of the head part at equal intervals by the center of the head part. So that the coffee powder can be extracted quickly and sufficiently.

In addition, the rebound component comprises a fixed part arranged on the brewing bracket and a rebound part connected with the fixed part and used for propping against the brewing head component; wherein the fixed part is provided with a nozzle for supplying brewed coffee to the coffee outlet of the brewing bracket. The fixing part in the rebound component is arranged on the brewing bracket, and the rebound part is propped against the brewing head component, so that when in actual use, the rebound part is compressed after the brewing head component moves towards the brewing chamber component under the action of water pressure, and when brewed coffee flows out from the nozzle, the brewing head component can automatically reset to the initial position under the rebound action of the rebound part.

In addition, the rebound part comprises a guide rod which is arranged on the brewing bracket and is in sliding connection with the brewing head assembly, and a compression spring which is sleeved on the guide rod and is used for respectively propping against the fixing part and the brewing head assembly. Therefore, the guide rod plays a guiding role in sliding of the brewing head assembly, and the brewing head assembly moves along the axial direction of the guide rod under the action of the rebound part, so that the stability of the brewing head assembly in the moving process is ensured.

In addition, the cold water pipeline assembly comprises a cold water supply pipe connected with the water supply device and the brewing bracket hydraulic cavity and a normally closed electromagnetic valve arranged on the cold water supply pipe; wherein the normally closed solenoid valve is energized to be opened after the brew chamber assembly moves to a preset position toward one side of the brew head assembly, and is de-energized to be closed after the brew head assembly moves to a preset position toward one side of the brew chamber assembly. The normally closed electromagnetic valve is opened when the brewing chamber assembly moves to a preset position, and the brewing head assembly is closed when the brewing head assembly moves to the preset position, so that water supply and water stopping of the brewing support hydraulic cavity by the cold water pipeline assembly are realized, and compaction of coffee powder is realized by means of movement of the brewing head assembly.

In addition, the hot water pipeline component comprises a hot water supply pipe connected with the water supply device and the brewing support hydraulic cavity, a heating source arranged on the hot water supply pipe and a normally closed electromagnetic valve arranged on the hot water supply pipe; wherein the normally closed solenoid valve is energized to be opened after the brew head assembly moves to a preset position toward one side of the brew chamber assembly, and is de-energized to be closed after brewed coffee flows out of the coffee outlet of the brew bracket. The normally closed electromagnetic valve is opened after the brewing head assembly moves to a preset position, and the brewed coffee is closed after all the brewed coffee flows out of the coffee outlet, so that the brewed coffee flows into the brewing chamber assembly after the water flow is heated by the heating source on the hot water supply pipe, and the brewed coffee is conveniently brewed.

In addition, the water supply device comprises a water supply pipe, a flowmeter and a water pump, wherein the flowmeter and the water pump are arranged on the water supply pipe; one end of the water supply pipe is connected with the water tank, and the other end of the water supply pipe is connected with the cold water pipeline assembly and the hot water pipeline assembly. The flow of the water supply pipe into the cold water pipeline assembly can be controlled through the flowmeter and the water pump, so that the movement control of the brewing head assembly is facilitated, and the extraction of coffee powder is fully realized by controlling the flow of the water supply pipe into the hot water pipeline assembly.

In addition, the coffee machine brewing system further comprises a water return pipeline assembly connected with the cold water pipeline assembly and the water tank; the water return pipeline assembly is communicated with the cold water pipeline assembly after brewed coffee flows out of a coffee outlet of the brewing support, the rebound assembly rebounds gradually and drives the brewing head assembly to move towards one side deviating from the brewing chamber assembly, and cold water in the hydraulic cavity is supplemented into the water tank through the cold water pipeline assembly and the water return pipeline assembly. The water return pipeline component is communicated with the cold water pipeline component after the brewed coffee completely flows out of the coffee outlet, so that the brewing head component can return the water pressure in the hydraulic cavity into the water tank under the action of the rebound component, and the subsequent brewing of the coffee powder is facilitated.

In addition, the water return pipeline assembly comprises a water return pipe connected with the cold water pipeline assembly and a normally closed electromagnetic valve arranged on the water return pipe; wherein the normally closed solenoid valve is energized to be opened after brewed coffee is completely discharged from the coffee outlet of the brewing support, and is de-energized to be closed after the brew head assembly moves to an initial position towards one side facing away from the brew chamber assembly. The normally closed electromagnetic valve is opened when the brewed coffee flows out of the coffee outlet of the brewing support completely, so that water in the hydraulic cavity can flow back to the water tank through the water return pipe under the action of the brewing head assembly, and the normally closed electromagnetic valve is closed when the brewing head assembly moves to the initial position, so that the water in the hydraulic cavity cannot flow back to the water tank through the water return pipe, and the subsequent cold water pipeline assembly is convenient for supplying water to the hydraulic cavity.

In addition, the coffee machine brewing system further comprises an exhaust pipeline assembly connected with the hot water pipeline assembly; and after the exhaust pipeline assembly is communicated with the hot water pipeline assembly, water vapor formed by a water source heated by the hot water pipeline assembly is discharged outwards. The steam in the hot water pipeline assembly can be discharged to the outside through the exhaust pipeline assembly, so that a user can foam milk, heat a coffee cup and the like by using the steam according to the self requirements. And the residual water in the hot water pipeline assembly is discharged to the outside through the exhaust pipeline assembly, so that the phenomenon that the cooled residual water in the hot water pipeline assembly is flushed into the brewing chamber assembly when the hot water pipeline assembly infuses coffee powder again can be avoided, and the quality of coffee is reduced.

In addition, the exhaust pipeline assembly comprises an exhaust pipe connected with the hot water pipeline assembly and a normally closed electronic valve arranged on the exhaust pipe; after the normally closed electromagnetic valve is opened, the exhaust pipe and the hot water pipeline component are communicated with each other. The normally closed electronic valve controls the discharge of water vapor in the hot water pipeline assembly so as to facilitate the operation of a user.

Drawings

FIG. 1 is an exploded view of a brewing system for a coffee maker in accordance with a first embodiment of the present invention;

FIG. 2 is a schematic view of the brewing support, brewing assembly and brew head assembly of the first embodiment of the present invention after assembly;

FIG. 3 is a cross-sectional view of a brew frame, brew chamber assembly and brew head assembly according to a first embodiment of the present invention assembled;

fig. 4 is a schematic view showing the structure of a brewing system of the coffee maker according to the first embodiment of the present invention;

FIG. 5 is a top view of a brew frame of a first embodiment of the invention;

FIG. 6 is a schematic view of the brew chamber assembly according to a first embodiment of the present invention being moved to a predetermined position;

FIG. 7 is a schematic view showing a state of the brewing head assembly of the first embodiment of the present invention when pressing coffee powder;

fig. 8 is a schematic structural view of a brew head assembly according to a first embodiment of the present invention;

FIG. 9 is a schematic view of the brewing support, brewing assembly and brew head assembly of a second embodiment of the present invention after assembly;

fig. 10 is a schematic structural view of a brewing system of a coffee maker according to a second embodiment of the present invention.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail below with reference to the accompanying drawings. However, those of ordinary skill in the art will understand that in various embodiments of the present invention, numerous technical details have been set forth in order to provide a better understanding of the present application. However, the technical solutions claimed in the claims of the present application can be realized without these technical details and various changes and modifications based on the following embodiments.

A first embodiment of the invention relates to a brewing system of a coffee machine, comprising, as shown in fig. 1, 2 and 3, a brewing support 3 with a coffee outlet 1 and a hydraulic chamber 2, a brewing chamber assembly 4 and a brewing head assembly 5 arranged in the brewing support 3, a rebound assembly 6 arranged in the brewing support 3, a driving device 7 arranged in the brewing support 3, wherein the rebound assembly 6 is used for abutting against the brewing head assembly 5, and the driving device 7 is used for driving the brewing chamber assembly 4 to move towards one side of the brewing head assembly 5, i.e. towards the brewing head assembly 5, or away from one side of the brewing head assembly 5, i.e. away from the brewing head assembly 5.

As shown in fig. 4, the coffee machine brewing system of the present embodiment further includes: the brewing support comprises a water tank 8, a cold water pipeline assembly connected with the brewing support hydraulic cavity 2, a hot water pipeline assembly connected with the brewing head assembly 5, and a water supply device used for supplementing water in the water tank 8 into the cold water pipeline assembly or the hot water pipeline assembly.

When the brewing system of the coffee machine is in actual use, after a user starts the brewing system of the coffee machine, the water supply device is started after one side of the brewing chamber assembly 4 faces to the brewing chamber assembly 5 and is communicated with the cold water pipeline assembly and is disconnected with the hot water pipeline assembly, so that the water supply device can supply water in the water tank 8 into the hydraulic cavity 2 through the cold water pipeline assembly to drive the brewing chamber assembly 5 to move towards one side of the brewing chamber assembly 4, meanwhile, the rebound assembly 6 can be compressed by the brewing chamber assembly 5 in the process, the brewing chamber assembly 4 is matched with the brewing head assembly 5 to gradually compact coffee powder placed in the brewing chamber assembly 4, and after the brewing head assembly 5 moves to the preset position, the water supply device is disconnected with the cold water pipeline assembly and is communicated with the hot water pipeline assembly, water in the water tank 8 is supplied into the brewing head assembly 5 through the hot water pipeline assembly to brew compacted coffee powder, and brewed coffee can flow out of the coffee outlet 1 of the brewing bracket 3.

As can be seen from the foregoing, in this embodiment, since the brewing chamber assembly 4 in the brewing system of the coffee machine can move toward or away from the brewing head assembly 5 under the action of the driving device 7, and the brewing head assembly 5 can move toward the brewing chamber assembly 4 under the action of the water pressure in the hydraulic chamber 2 of the brewing bracket 3, the compaction of the coffee powder in the brewing chamber assembly 4 is achieved by the cooperation of the brewing chamber assembly 4 and the brewing head assembly 5. Meanwhile, the water supply device is disconnected from the cold water pipeline assembly after the brewing head assembly 5 moves to a preset position, and water in the water tank 8 flows into the brewing chamber assembly 4 through the hot water pipeline assembly, so that the coffee machine brewing system can directly brew compacted coffee powder through hot water flowing out of the hot water pipeline assembly in the whole brewing process, the structure is simplified, and the volume is reduced. And as the coffee powder is brewed after being compacted, the coffee powder can be fully extracted in the brewing process, and the coffee flowing out of the coffee outlet 1 is ensured to be thicker.

Specifically, as shown in fig. 1, in the present embodiment, the brewing chamber assembly 4 is mainly composed of a brewing chamber body 41 and a worm 42 connected to the brewing chamber body 41, and the brewing chamber body 41 is used for storing coffee grounds. Wherein, the brewing chamber main body 41 is provided with a feeding port 21 for throwing coffee powder, and the worm 42 is of a hollow structure and is respectively communicated with the brewing chamber main body 41 and the coffee outlet 1 of the brewing bracket 3. The brewing chamber body 41 further comprises a body member 411 and a nozzle 412 arranged in the body member 411, so that the coffee extracted in the brewing chamber body 41 flows into the hollow structure of the worm 42 through the nozzle 412 and out through the coffee outlet 1.

In order to meet the design and assembly requirements in practical applications, as shown in fig. 1 and 3, the above-mentioned driving device 7 is composed of a motor 71, a driving gear 72 sleeved on the main shaft of the motor 71, a driven gear 73 meshed with the driving gear 72, and a gear ring 74 sleeved on the worm 42 of the brewing chamber assembly 4. Wherein the outer race of the ring gear 74 meshes with the driven gear 73 and the inner race meshes with the worm 42. Meanwhile, in order to facilitate the transmission among the driving gear 72, the driven gear 73 and the ring gear 74, in the present embodiment, as shown in fig. 3, the driven gear 73 includes a first wheel body 731 engaged with the driving gear 72, and a second wheel body 732 engaged with the outer ring of the ring gear 74.

As shown in fig. 3, in actual use, when the spindle of the motor 71 rotates in the forward direction, the driving gear 72 is meshed with the first wheel 731 of the driven gear 73 to drive the first wheel 731 to rotate in the reverse direction, and the second wheel 732 is meshed with the outer ring of the gear ring 74 to drive the gear ring 74 to rotate in the forward direction, so that the inner ring of the gear is meshed with the worm 42 to realize the reverse rotation of the worm 42, and the brewing chamber assembly 4 moves towards the brewing head assembly 5. Accordingly, the spindle of the motor 71, upon counter rotation, effects movement of the brew chamber assembly 4 away from the side of the brew head assembly 5.

It can be seen that, since the brewing chamber assembly 4 is composed of the brewing chamber body 41 and the worm 42, and the worm 42 is meshed with the inner ring of the gear ring 74 in the driving device 7, the motor 71 in the driving device 7 can move towards or away from the brewing chamber body 41 when the motor is rotated in the forward and reverse directions by the mutual meshing of the driving gear 72 and the driven gear 73 in the driving device 7 and the driven gear 73 and the outer ring of the gear ring 74, so as to facilitate compacting of the coffee powder 20. And because the brewing chamber main body 41 is provided with the feeding port 21, and the worm 42 is of a hollow structure and is respectively communicated with the brewing chamber main body 41 and the coffee outlet 1, the brewed coffee can smoothly flow out from the coffee outlet.

In the present embodiment, as shown in fig. 4, the water supply device includes a water supply pipe 111, a flowmeter 112 provided in the water supply pipe 111, and a water pump 113. Wherein one end of the water supply pipe 111 is connected to the water tank 8 and the other end is connected to the cold water pipe assembly and the hot water pipe assembly. As shown in fig. 4, the cold water pipe assembly connected to the water supply pipe 111 includes a cold water supply pipe 91 and a normally closed solenoid valve 92 provided in the cold water supply pipe 91. Wherein the cold water supply pipe 91 is connected to the water supply means and the hydraulic chamber 2 of the brew frame 3, respectively. Correspondingly, the hot water pipeline assembly connected with the water supply pipe 111 comprises a hot water supply pipe 101, a heating source 102 arranged on the hot water supply pipe 101 and a normally closed electromagnetic valve 103 arranged on the hot water supply pipe 101, wherein the hot water supply pipe 101 is used for connecting a water supply device and the hydraulic cavity 2 of the brewing bracket 3. Among them, the cold water supply pipe 91 and the hot water supply pipe 101 may be connected to the water supply pipe 111 through the tee 12.

In addition, in the present embodiment, as shown in fig. 4, the brewing system of the coffee machine further comprises a water return line assembly connecting the cold water line assembly and the water tank 8, so that the brew head assembly 5 can continue to compact and brew the newly added coffee grounds 20 after the brewed coffee completely flows out of the coffee outlet 1. Specifically, the water return line assembly comprises: a return pipe 161 connected to the cold water pipe assembly, and a normally closed electromagnetic valve 162 provided on the return pipe 161. Wherein the normally closed solenoid valve 162 is energized to be opened after the brewed coffee has completely flowed out of the coffee outlet 1, and is de-energized to be closed after the brew head assembly 5 has been moved to an initial position towards a side facing away from the brew chamber assembly 4. And the return water pipeline component is communicated with the cold water pipeline component after the brewed coffee completely flows out from the coffee outlet 1 of the brewing support 3, and the rebound component 6 gradually begins to rebound after the brewed coffee completely flows out and drives the brewing head component 5 to move towards one side deviating from the brewing chamber component 4, so that cold water in the hydraulic cavity 2 is supplemented into the water tank 8 through the cold water pipeline component and the return water pipeline component.

It is thus readily seen that, as the return water line assembly is in communication with the cold water line assembly after all of the brewed coffee has flowed out of the coffee outlet 1, the brew head assembly 5 is able to return water pressure in the hydraulic chamber 2 into the water tank 8 under the action of the rebound assembly 6, so as to facilitate subsequent brewing of the coffee grounds 20. And open when the coffee that is brewed from brewing support 3's coffee export 1 totally flows through normally closed solenoid valve 162 for the water in the hydraulic pressure chamber 2 can flow back to water tank 8 through the wet return under the effect of brewing head subassembly 5, and through the closure of normally closed solenoid valve 162 when brewing head subassembly 5 moves to initial position, make the water in the hydraulic pressure chamber 2 can not flow back to water tank 8 through the wet return, so that follow-up cold water piping assembly is to the water supply of hydraulic pressure chamber 2.

In the present embodiment, as shown in fig. 1 and 3, the rebound unit 6 includes: a fixed portion 61 provided on the brew frame 3, and a rebound portion 62 connected to the fixed portion 61 for abutting against the brew head assembly 5. The rebound part mainly comprises a guide rod 621 arranged on the brewing bracket 3 and connected with the brewing head assembly 5 in a sliding way, and a compression spring 622 sleeved on the guide rod 621.

It can be seen that the guide rod 621 plays a guiding role in sliding the brewing head assembly 5, and the brewing head assembly 5 moves along the axial direction of the guide rod 621 under the action of the rebound portion 62, so as to ensure the stability of the brewing head assembly 5 during the moving process. And because the fixing part 61 in the rebound assembly 6 is arranged on the brewing bracket 3, and the rebound part 62 is propped against the brewing head assembly 5, in actual use, when the brewing head assembly 5 moves towards the brewing chamber assembly 4 under the action of water pressure, the rebound part 62 is compressed, and when the brewed coffee flows out from the nozzle 412, the brewing head assembly 5 can be automatically reset to the initial position under the rebound action of the rebound part 62.

In addition, it should be noted that, in order to achieve compaction of the coffee powder 20 by the brew head assembly 5, as shown in fig. 8, in the present embodiment, the brew head assembly 5 comprises a brew head portion 52 with a water supply channel, a brew head tail portion 54 connected to the brew head body 53, and the tail portion 54 is adapted to push the brew head body 53 under water pressure and to move the brew head body 53 towards one side of the brew chamber assembly 4. And, the water supply passage includes: a channel body (not shown) formed in the brew head portion 52, a channel inlet 51 formed in an outer peripheral surface of the brew head portion 52, and a channel outlet 55 formed in an end surface of the brew head portion 52. Wherein the channel inlet 51 and the channel outlet 55 are respectively communicated with the channel body, the channel inlet 51 is connected with the hot water pipeline assembly, and the channel outlet 55 is opposite to the brewing chamber assembly 4. In addition, in order to enhance the brewing effect of the coffee powder 20, as shown in fig. 2, a plurality of channel outlets 55 may be provided on the end surface of the brew head portion 52. Wherein the channel outlets 55 are equally circumferentially distributed on the end face of the brew head portion 52 with the center of the brew head portion 52 so that the coffee powder 20 can be extracted quickly and sufficiently when being brewed.

It is thus readily apparent that, because the hot water line assembly is connected to the channel inlet 51 of the brew head portion 52, and the channel inlet 51 is connected to the channel body in the brew head portion 52, which is in turn connected to the channel outlet 55 of the end face of the brew head portion 52, in actual use, hot water in the hot water line assembly can flow into the brew chamber assembly 4 from the channel outlet 55 on the end face of the brew head portion 52 after passing through the channel inlet 51 and the channel body in order to ensure that the brew of the coffee powder 20 is achieved without affecting the compaction of the coffee powder 20 by the brew head.

As is apparent from fig. 2 and 6 and the above, the present embodiment further includes a switch 13, a switch 14, and a switch 15 for controlling the operation of the motor 71, and the energization and the disconnection of the normally closed solenoid valve 92 and the normally closed solenoid valve 103, respectively. In addition, the flow rate of the water supply pipe 111 into the hot water pipe assembly can be controlled by the flow meter 112 and the water pump 113 to achieve sufficient extraction of the flowing coffee powder. Also, in actual use, the normally closed solenoid valve 92 is energized to be turned on after the brew chamber assembly 4 moves to a preset position toward the brew head assembly 5, and is de-energized to be turned off after the brew head assembly 5 moves to a preset position toward the brew chamber assembly 4. Accordingly, as shown in fig. 3 and 4, the normally closed solenoid valve 103 is energized to be opened after the brew head assembly 5 moves to a predetermined position toward the brew chamber assembly 4, and is de-energized to be closed after the brewed coffee has completely flowed out of the coffee outlet 1 of the brew frame 3.

It can be seen that, after the user presses the start key, the motor 71 in the driving device 7 is turned on, and drives the brewing chamber assembly 4 to move towards one side of the brewing head assembly 5, until the feed port 21 on the brewing chamber assembly 4 is communicated with the coffee powder feeding port 1 on the brewing support 3, and at this time, the coffee brewing system of the coffee machine automatically turns on the switch 14, so that the motor 71 stops working, and the brewing chamber assembly 4 reaches the preset position, the coffee powder 20 is conveniently fed in the brewing chamber main body 41, and after the coffee powder 20 is fed, the motor 71 starts to rotate reversely, and drives the brewing chamber assembly 4 to retract, until the feed port 21 is completely covered by the brewing support 3, and stops rotating, so as to prevent part of coffee powder from being ejected from the coffee powder feeding port 1 when the brewing head assembly 5 compacts coffee powder, and, generally after a few seconds, the water pump 113 in the water supply device starts to start, and the normally closed electromagnetic valve 92 arranged on the cold water supply pipe 91 is electrified, so that the water supply pipe 111 and the cold water supply pipe 91 are in the conduction state, and water in the water tank 8 sequentially push the flowmeter 112, the water pump 113, the normally closed electromagnetic valve 92, and the normally closed electromagnetic valve 92 to move towards one side of the brewing head assembly 7, and the brewing chamber assembly 7, as shown in fig. 4, and the brewing chamber assembly 2 is realized.

And, accordingly, as shown in fig. 4 and 5, after the brew head assembly 5 moves to a preset position, the switch 15 is turned on, so that the water pump 113 is stopped, and after stopping for a period of time, the normally closed solenoid valve 92 is de-energized, and the normally closed solenoid valve 103 provided on the hot water supply pipe 101 is energized, which is preset to 0.5 seconds in a normal case. So that the water supply pipe 111 is in a conducting state with the hot water supply pipe 101 only, and the water in the water tank 8 is changed into hot water after sequentially passing through the flowmeter 112, the water pump 113, the three-way pipe 12, the normally-closed electromagnetic valve 103 and the heating source 102, and flows into the brewing head assembly 5 to brew the coffee powder 20 in the brewing chamber main body 41. And when the coffee grounds 20 are brewed, they can smoothly flow out of the coffee outlet 1 through the hollow structure in the worm 42 connected to the brew chamber body 41.

It has thus been found that by opening the normally closed solenoid valve 92 when the brew chamber assembly 4 is moved to the preset position and closing the brew head assembly 5 when it is moved to the preset position, the water supply and the water shut-off of the brew frame 3 hydraulic chamber 2 by the cold water pipe assembly can be achieved, so that the compaction of the coffee grounds 20 is achieved by means of the movement of the brew head assembly 5. And the normally closed electromagnetic valve 103 is opened after the brewing head assembly 5 moves to a preset position, and the brewed coffee is closed after all the brewed coffee flows out of the coffee outlet 1, so that the brewed coffee flows into the brewing chamber assembly 4 after being heated by the heating source 102 on the hot water supply pipe 101, and the coffee is brewed conveniently.

As shown in fig. 1 and 4, when the brewed coffee flows out of the coffee outlet 1 of the brewing support 3, the normally closed electromagnetic valve 3 arranged on the water return pipe 161 is electrified, and the normally closed electromagnetic valve 103 arranged on the hot water supply pipe 102 is powered off, so that the hot water supply pipe 102 and the hydraulic cavity 2 are in a disconnected state, the water return pipe 161 and the hydraulic cavity 2 are in a conducting state, and the cold water supply pipe 91 does not supply water to the hydraulic cavity 2 any more after the water pump 113 stops working, so that the brewing head assembly 5 can return the water pressure in the hydraulic cavity 2 to the water tank 8 under the action of the rebound assembly 6. Meanwhile, the normally closed solenoid valve 162 is turned off after the brew chamber assembly 5 moves to the initial position toward the brew chamber assembly 4, and normally, the normally closed solenoid valve 162 is turned on for about several seconds, and after the normally closed solenoid valve 162 is turned off for a period of time, the motor 71 starts to reverse rotation and drives the brew chamber assembly 4 to move away from the brew chamber assembly 5, and when the brew chamber assembly 4 moves to the initial position, the switch 13 is turned on, and the motor 71 stops working.

A second embodiment of the present invention relates to a coffee machine brewing system, which is a further improvement over the first embodiment, and which is mainly improved in that: as shown in fig. 9, the brew chamber assembly 4 of the present embodiment further comprises a spring 45 arranged in the nozzle 412, a plug 46 against the spring 45 for closing the inlet of the nozzle 412. Wherein the plug 46 compresses the spring 45 when the pressure to which the inlet of the nozzle 412 is subjected is greater than the return force of the spring 45, and the inlet of the nozzle 412 is opened. When the pressure applied to the inlet of the nozzle 412 is smaller than the resilience force of the spring 45, the spring 45 drives the plug 46 to close the inlet of the nozzle 412.

From the above, it can be seen that after the coffee powder 20 is brewed, and when the pressure of the coffee on the nozzle 412 is greater than the resilience force of the spring 45, the plug 46 is automatically pushed by the hydraulic pressure of the coffee, so as to open the inlet of the nozzle 412, and further realize the outflow of the coffee from the coffee outlet 1. And when the pressure of the brewed coffee on the nozzle 412 is smaller than the resilience force of the spring 45, the spring 45 can drive the plug 46 to close the inlet of the nozzle 412 under the resilience of the spring, so that the subsequent brewing of the coffee powder 20 is facilitated.

A third embodiment of the present invention relates to a coffee machine brewing system, which is a further improvement on the first embodiment or the second embodiment, and the main improvement is that: as can be seen from fig. 10, the coffee brewing system of the present embodiment further includes an exhaust pipe assembly connected to the hot water pipe assembly. After the exhaust pipeline component is communicated with the hot water pipeline component, water vapor formed by a water source heated by the hot water pipeline component is discharged outwards.

According to the above, the exhaust pipeline assembly can discharge the water vapor in the hot water pipeline assembly to the outside, so that a user can foam milk, heat a coffee cup and the like by utilizing the water vapor according to the self requirements. And the exhaust pipeline assembly can also avoid that when the hot water pipeline assembly infuses the coffee powder 20 again, the residual water cooled in the hot water pipeline assembly is infused into the brewing chamber assembly 4, so that the coffee quality is reduced.

Specifically, as shown in fig. 1, in the present embodiment, the exhaust pipe assembly is mainly composed of an exhaust pipe 171 connected to the hot water pipe assembly, and a normally closed electronic valve 172 provided in the exhaust pipe 171. Wherein, the normally closed solenoid valve 172 is opened, and the exhaust pipe and the hot water pipe assembly are mutually communicated.

It is thus readily apparent that the venting of water vapor within the hot water line assembly is controlled by the normally closed electronic valve 172 to facilitate operation by the user.

In addition, in the present embodiment, the exhaust pipe 171 is connected to the hot water supply pipe 101 in the hot water pipeline assembly through the tee 18, and the normally closed electronic valve 172 is a two-way electromagnetic valve, so that when the heating source 102 is preheated in actual use, a user can press the start key according to his own needs to make the normally closed electronic valve 172 in an energized state, so that the exhaust pipe 171 and the hot water supply pipe 101 are in a conductive state, and the water pump 113 is started, so that water in the water tank 8 can generate corresponding water vapor after passing through the flowmeter 112, the water pump 113, the tee 12 and the heating source 102 in sequence, and after passing through the tee 18 and the normally closed electronic valve 172, the water is discharged from the outlet of the exhaust pipe 171, so as to heat the coffee cup, foam milk and the like.

It will be understood by those of ordinary skill in the art that the foregoing embodiments are specific examples of carrying out the invention and that various changes in form and details may be made therein without departing from the spirit and scope of the invention.

Claims

1. A coffee machine brewing system, characterized by: comprises a brewing bracket with a coffee outlet and a hydraulic cavity, a brewing chamber component and a brewing head component which are arranged in the brewing bracket, a rebound component which is arranged in the brewing bracket and is used for propping against the brewing head component, and a driving device which is arranged in the brewing bracket and is used for driving the brewing chamber component to move towards or away from the brewing head component;

wherein the brew head assembly comprises a brew head portion with a water supply channel, the water supply channel comprises a channel inlet formed on the outer edge surface of the brew head portion, and the channel inlet is connected with the hot water pipeline assembly;

the water supply device is started after the brewing chamber component moves to a preset position towards one side of the brewing head component, is communicated with the cold water pipeline component and is disconnected with the hot water pipeline component, the water supply device supplies water in the water tank into the hydraulic cavity through the cold water pipeline component, drives the brewing head component to move towards one side of the brewing chamber component, the rebound component is compressed, the brewing head component is matched with the brewing chamber component to gradually compact coffee powder placed in the brewing chamber component, and after the brewing head component moves to the preset position, the water supply device is disconnected with the cold water pipeline component and is communicated with the hot water pipeline component, the water supply device supplies water in the water tank into the compacted coffee powder through the hot water pipeline component, and brewed coffee flows out of a coffee outlet of the brewing support;

the brewing chamber assembly comprises a brewing chamber main body for storing coffee powder and a worm connected with the brewing chamber main body; wherein, the brewing chamber main body is provided with a feed inlet for throwing coffee powder, and the worm is internally provided with a hollow structure which is respectively communicated with the brewing chamber main body and the coffee outlet of the brewing bracket;

the driving device comprises a motor, a driving gear sleeved on a main shaft of the motor, a driven gear meshed with the driving gear, and a gear ring sleeved on a worm of the brewing chamber assembly; wherein the outer race of the ring gear meshes with the driven gear and the inner race meshes with the worm.

2. A coffee machine brewing system as recited in claim 1, wherein: the driven gear comprises a first wheel body meshed with the driving gear and a second wheel body meshed with the outer ring of the gear ring.

3. A coffee machine brewing system as recited in claim 1, wherein: the brewing bracket is also provided with a coffee powder throwing port; the coffee powder throwing port is used for being communicated with the feeding port on the brewing chamber assembly when the brewing chamber assembly moves to a preset position towards one side of the brewing head assembly.

4. A coffee machine brewing system as recited in claim 1, wherein: the brewing head assembly further comprises a brewing head tail connected with the brewing head main body and used for pushing the brewing head main body to move towards one side of the brewing chamber assembly under the action of water pressure.

5. A coffee machine brewing system as recited in claim 4, wherein: the water supply channel also comprises a channel body formed in the head of the brewing head and a channel outlet formed on the end face of the head of the brewing head;

wherein the channel inlet and the channel outlet are respectively communicated with the channel body, and the channel outlet is opposite to the brewing chamber assembly.

6. A coffee machine brewing system as recited in claim 5, wherein: the channel outlets comprise N; wherein N is a natural number greater than 1 and is distributed around the end face of the head part at equal intervals by the center of the head part.

7. A coffee machine brewing system as recited in claim 1, wherein: the rebound assembly comprises a fixing part arranged on the brewing bracket and a rebound part connected with the fixing part and used for propping against the brewing head assembly.

8. A coffee machine brewing system as recited in claim 7, wherein: the rebound part comprises a guide rod which is arranged on the brewing support and is in sliding connection with the brewing head assembly, and a compression spring which is sleeved on the guide rod and is used for respectively propping against the fixing part and the brewing head assembly.

9. A coffee machine brewing system as recited in claim 1, wherein: the cold water pipeline assembly comprises a cold water supply pipe connected with the water supply device and the brewing support hydraulic cavity and a normally closed electromagnetic valve arranged on the cold water supply pipe;

wherein the normally closed solenoid valve is energized to be opened after the brew chamber assembly moves to a preset position toward one side of the brew head assembly, and is de-energized to be closed after the brew head assembly moves to a preset position toward one side of the brew chamber assembly.

10. A coffee machine brewing system as recited in claim 1, wherein: the hot water pipeline assembly comprises a hot water supply pipe connected with the water supply device and the brewing support hydraulic cavity, a heating source arranged on the hot water supply pipe and a normally closed electromagnetic valve arranged on the hot water supply pipe;

wherein the normally closed solenoid valve is energized to be opened after the brew head assembly moves to a preset position toward one side of the brew chamber assembly, and is de-energized to be closed after brewed coffee flows out of the coffee outlet of the brew bracket.

11. A coffee machine brewing system as recited in claim 1, wherein: the water supply device comprises a water supply pipe, a flowmeter and a water pump, wherein the flowmeter and the water pump are arranged on the water supply pipe;

one end of the water supply pipe is connected with the water tank, and the other end of the water supply pipe is connected with the cold water pipeline assembly and the hot water pipeline assembly.

12. A coffee machine brewing system as recited in claim 1, wherein: the coffee machine brewing system further comprises a water return pipeline assembly connected with the cold water pipeline assembly and the water tank;

the water return pipeline assembly is communicated with the cold water pipeline assembly after brewed coffee flows out of a coffee outlet of the brewing support, the rebound assembly rebounds gradually and drives the brewing head assembly to move towards one side deviating from the brewing chamber assembly, and cold water in the hydraulic cavity is supplemented into the water tank through the cold water pipeline assembly and the water return pipeline assembly.

13. A coffee machine brewing system as recited in claim 12, wherein: the water return pipeline assembly comprises a water return pipe connected with the cold water pipeline assembly and a normally closed electromagnetic valve arranged on the water return pipe;

wherein the normally closed solenoid valve is energized to be opened after brewed coffee is completely discharged from the coffee outlet of the brewing support, and is de-energized to be closed after the brew head assembly moves to an initial position towards one side facing away from the brew chamber assembly.

14. A coffee machine brewing system as recited in claim 1, wherein: the coffee machine brewing system further comprises an exhaust pipeline assembly connected with the hot water pipeline assembly;

and after the exhaust pipeline assembly is communicated with the hot water pipeline assembly, water vapor formed by a water source heated by the hot water pipeline assembly is discharged outwards.

15. A coffee machine brewing system as recited in claim 14, wherein: the exhaust pipeline assembly comprises an exhaust pipe connected with the hot water pipeline assembly and a normally closed electronic valve arranged on the exhaust pipe;

after the normally closed electromagnetic valve is opened, the exhaust pipe and the hot water pipeline component are communicated with each other.