Beverage machine back flushing system

Abstract

The utility model provides a back flushing system of a beverage machine, which relates to the technical field of beverage machines, and comprises a bean grinding component, a brewing device component, a heating component, a waterway system, a residue discharging component, a first high-pressure two-position three-way valve, a second high-pressure two-position three-way valve, a first high-pressure two-position three-way valve, a second high-pressure two-position three-way valve, a third high-pressure two-position three-way valve and a fourth high-pressure two-position three-way valve, the waterway system comprises a water source and a pump which are sequentially connected, the heating assembly comprises a boiler, the brewing device assembly comprises a brewing device and a water outlet nozzle which are sequentially connected, and the deslagging assembly comprises a waste water disc; the back flushing pipeline is the same as the beverage outlet pipeline, so that the beverage outlet pipeline is cleaned while the filter screen is cleaned, and the beverage is more sanitary; full-automatic reverse cleaning is achieved, a customer can customize and adjust cleaning conditions, and using is more intelligent and convenient; an external flushing hose is not needed, and the water consumption in the flushing process is less.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of beverage machine, specifically to a beverage machine reverse flushing system. BACKGROUND

[0002] In the field of beverage production, beverage machines are very common and popular devices, widely used in homes, cafes, offices and other places. Beverage machines rely on internal filters to effectively filter coffee or tea powder, providing users with delicate and pure beverages.

[0003] Traditional beverage machine filters are designed with conventional fine mesh, aiming to accurately intercept coffee grounds and tea residue. However, in actual use, many drawbacks gradually emerge. As coffee or tea powder comes into contact with water, they quickly absorb water and expand, increasing the degree of adhesion between particles, making it extremely easy to accumulate in the filter's fine pores. When making beverages frequently, residues accumulate layer by layer, quickly clogging the filter. Once the filter is clogged, the water flow rate drops dramatically, not only prolonging the beverage production time, but also causing the internal pressure of the machine to rise abnormally, affecting the stable operation of the equipment, and causing insufficient extraction of beverages and poor taste. Users have to frequently interrupt use, wasting additional effort to clean the filter, and the cleaning process is complex and tedious.

[0004] The prior art CN211212643U provides a reverse flushing quick dredging full-automatic coffee machine filter clogging brewing head, providing a reverse flushing technical solution, but the coffee outlet pipeline and the reverse flushing pipeline are different in this solution, and the residues inside the coffee outlet pipeline are not cleaned. Moreover, the brewing head needs to be disassembled, connected to the flushing hose, and placed in the water receiving tray during cleaning, and the cleaning operation is complex and inconvenient. UTILITY MODEL CONTENT

[0005] The utility model aims to provide a beverage machine reverse flushing system that realizes full-automatic reverse flushing, consumes less water during the flushing process, and is more intelligent and convenient to use.

[0006] To achieve the above-mentioned purpose, the utility model realizes the following technical scheme: a beverage machine reverse flushing system, comprising a bean grinding assembly, a brewing device assembly, a heating assembly, a waterway system, and a residue discharge assembly connected in sequence, the residue discharge assembly is also connected to the brewing device assembly, further comprising a first high-pressure two-position three-way valve and a second high-pressure two-position three-way valve, the waterway system comprises a water source and a pump connected in sequence, the heating assembly comprises a boiler, the brewing device assembly comprises a brewer and a water outlet nozzle connected in sequence, and the residue discharge assembly comprises a wastewater tray.

[0007] The brewing device comprises a brewing part and a driving part, the brewing part comprises a first pipe, a cavity, a second pipe, an upper filter screen and a lower filter screen; the first end of the first pipe is connected to the first end of a second high-pressure two-position three-way valve, and the second end is connected to the cavity; the first end of the second pipe is connected to the cavity, and the second end is connected to the first end of the first high-pressure two-position three-way valve; the top end of the cavity is provided with the upper filter screen, and the bottom end of the cavity is provided with the lower filter screen.

[0008] The top end of the boiler is respectively connected to the second end of the first high-pressure two-position three-way valve and the second end of the second high-pressure two-position three-way valve.

[0009] The third end of the second high-pressure two-position three-way valve is connected to the water outlet nozzle, and the third end of the first high-pressure two-position three-way valve is connected to the wastewater tray.

[0010] Further, the bean grinding assembly comprises a coffee bin and a grinder, the coffee bin is mounted at the top end of the grinder, and the bottom end of the grinder is connected to the brewing device.

[0011] Further, the brewing device further comprises a first three-way valve and a second three-way valve, the pump comprises an inlet and an outlet, the bottom end of the boiler is connected to the first end of the first three-way valve, the outlet of the pump is connected to the second end of the first three-way valve, and the third end of the first three-way valve is connected to the wastewater tray; the top end of the boiler is connected to the first end of the second three-way valve, the second end of the second three-way valve is connected to the second end of the first high-pressure two-position three-way valve, the third end of the second three-way valve is connected to the second end of the second high-pressure two-position three-way valve, the third end of the second three-way valve is connected to the first end of a safety valve, and the second end of the safety valve is connected to the wastewater tray.

[0012] Further, a one-way valve is arranged between the outlet of the pump and the second end of the first three-way valve.

[0013] Further, the brewing device further comprises a flow meter, and the inlet of the pump is connected to the flow meter.

[0014] Further, the boiler is provided with a pressure sensor.

[0015] Further, the boiler is provided with a temperature sensor.

[0016] Further, the mesh aperture of the upper filter screen ranges from 0.1 mm to 0.3 mm, and the mesh aperture of the lower filter screen ranges from 0.4 mm to 2 mm.

[0017] Further, the brewing device further comprises an upper plunger and a lower plunger; the upper plunger is arranged at the top end of the upper filter screen, and the lower plunger is arranged at the bottom end of the lower filter screen.

[0018] Further, the bottom end of the upper plunger is provided with a sealing ring, and the top end of the lower plunger is provided with a sealing ring.

[0019] Compared with the prior art, the beverage machine reverse flushing system has the following beneficial effects:

[0020] First, the reverse flushing pipeline and the beverage outlet pipeline are the same in the technical scheme of the beverage machine reverse flushing system, so that the cleaning of the beverage outlet pipeline is realized while the filter screen is cleaned, and the beverage is more sanitary.

[0021] Second, the beverage machine reverse flushing system is provided with a flow meter and a pressure sensor, so that the full-automatic reverse cleaning is started according to the water inflow speed and the brewer pressure feedback, and the customer can also customize and adjust the cleaning conditions, and the use is more intelligent and convenient.

[0022] Third, the beverage machine reverse flushing system realizes the full-automatic reverse cleaning, without the need of disassembling the brewer part for cleaning, and the operation is simple and the use is more convenient, and without the need of external flushing hose, the water consumption in the flushing process is less. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 is a system schematic view of the beverage machine reverse flushing system of the utility model;

[0024] Figure 2 is a half-section view schematic view of the brewing part of the brewer when the brewing process is performed;

[0025] Figure 3 is a half-section view schematic view of the brewing part of the brewer when the reverse flushing process is performed;

[0026] Figure 4 is a split view schematic view of the brewing part and the driving part of the brewer.

[0027] In the drawings:

[0028] 1, water source; 2, pump; 3, boiler; 4, brewer; 5, water outlet nozzle; 6, waste water tray; 7, first high-pressure two-position three-way valve; 8, second high-pressure two-position three-way valve; 9, coffee bin; 10, grinder; 11, first three-way valve; 12, second three-way valve; 13, check valve; 14, flow meter; 15, pressure sensor; 16, temperature sensor; 17, safety valve; 41, brewing part; 42, driving part; 411, first pipeline; 412, cavity; 413, second pipeline; 414, upper filter screen; 415, lower filter screen; 416, upper plunger; 417, lower plunger; 418, first sealing ring; 419, second sealing ring. DETAILED DESCRIPTION

[0029] The technical solutions of the present application will be described clearly and completely in connection with the drawings. Obviously, the described embodiments are some of the embodiments of the present application, but not all the embodiments. Based on the embodiments of the present application, all the other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0030] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third" are only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0031] As shown in Figures 1-4 The present application provides a beverage machine reverse flushing system, which comprises, in sequence, a bean grinding assembly, a brewing assembly, a heating assembly, a waterway system and a residue discharge assembly, the residue discharge assembly is further connected to the brewing assembly, and the beverage machine reverse flushing system further comprises a first high-pressure two-position three-way valve 7 and a second high-pressure two-position three-way valve 8. The waterway system comprises, in sequence, a water source 1 and a pump 2. The heating assembly comprises a boiler 3. The brewing assembly comprises, in sequence, a brewing device 4 and a water outlet nozzle 5. The residue discharge assembly comprises a waste water tray 6.

[0032] The brewing device 4 comprises a brewing part 41 and a driving part 42. The brewing part 41 comprises a first pipe 411, a cavity 412, a second pipe 413, an upper filter screen 414 and a lower filter screen 415. The first end of the first pipe 411 is connected to the first end of the second high-pressure two-position three-way valve 8, and the second end is connected to the cavity 412. The first end of the second pipe 413 is connected to the cavity 412, and the second end is connected to the first end of the first high-pressure two-position three-way valve 7. The top end of the cavity 412 is provided with the upper filter screen 414, and the bottom end of the cavity 412 is provided with the lower filter screen 415.

[0033] The top end of the boiler 3 is respectively connected to the second end of the first high-pressure two-position three-way valve 7 and the second end of the second high-pressure two-position three-way valve 8.

[0034] The third end of the second high-pressure two-position three-way valve 8 is connected to the water outlet nozzle 5, and the third end of the first high-pressure two-position three-way valve 7 is connected to the waste water tray 6.

[0035] According to a specific implementation scheme of the present application, the bean grinding assembly comprises a coffee bin 9 and a grinder 10. The coffee bin 9 is installed at the top end of the grinder 10, and the bottom end of the grinder 10 is connected to the brewing device 4.

[0036] According to one specific implementation scheme of the utility model, the pump 2 is provided with a one-way valve 13 between the outlet and the second end of the first three-way valve 11.

[0037] According to one specific implementation scheme of the utility model, the pump 2 is provided with a one-way valve 13 between the outlet and the second end of the first three-way valve 11.

[0038] According to one specific implementation scheme of the utility model, the pump 2 is provided with a one-way valve 13 between the outlet and the second end of the first three-way valve 11.

[0039] According to one specific implementation scheme of the utility model, the pump 2 is provided with a one-way valve 13 between the outlet and the second end of the first three-way valve 11.

[0040] According to one specific implementation scheme of the utility model, the mesh aperture range of the upper filter screen 414 is 0.1mm-0.3mm, and the mesh aperture range of the lower filter screen 415 is 0.4mm-2mm.

[0041] According to one specific implementation provided by the utility model, the brewer 4 further comprises an upper plunger 416 and a lower plunger 417; the upper plunger 416 is arranged at the top end of the upper filter screen 414, the lower plunger 417 is arranged at the bottom end of the lower filter screen 415, the bottom end of the upper plunger 416 is provided with a first sealing ring 418, and the top end of the lower plunger 417 is provided with a second sealing ring 419.

[0042] The working principle of the utility model is as follows:

[0043] When coffee is made, the brewer 4 drive part 42 is opened by the internal control system of the beverage machine, the ground coffee powder falls from the grinder 10 to the cavity 412 of the brewing part 41 of the brewer 4, then the brewer 4 is closed, the control system supplies power to the first high-pressure two-position three-way valve 7, the first end and the second end are opened, the high-temperature and high-pressure water provided by the boiler 3 sequentially passes through the second end and the first end, enters the cavity 412 inside the brewer 4 from the second pipeline 413 at the bottom of the brewer 4, and extraction is completed, the extracted beverage sequentially passes through the first end and the third end of the second high-pressure two-position three-way valve 8, and flows out from the water outlet 5, then the first high-pressure two-position three-way valve 7 is powered off, and beverage making is completed.

[0044] When backwashing, the brewer 4 drive part 42 is closed by the internal control system of the beverage machine, the control system supplies power to the second high-pressure two-position three-way valve 8, the first end and the second end are opened, the high-temperature and high-pressure water provided by the boiler 3 sequentially passes through the second end and the first end, enters the cavity 412 inside the brewer 4 from the first pipeline 411 at the top of the brewer 4, and backwashing of the coffee outlet pipeline, the cavity 412 of the brewer 4 and the filter screen inside is completed, the waste water after washing sequentially passes through the first end and the third end of the first high-pressure two-position three-way valve 7, and is discharged to the waste water tray 6, after backwashing is completed, the second high-pressure two-position three-way valve 8 is powered off, and the brewer 4 is opened for slag discharge.

[0045] It should be noted that after beverage making is completed, the brewer 4 is opened for slag discharge, the first high-pressure two-position three-way valve 7 restores the passage from the first end to the third end, and residual coffee is discharged.

[0046] It should be noted that the first end and the third end of the high-pressure two-position three-way valve are always open, the control system supplies power to the high-pressure two-position three-way valve to switch the passage, and automatically switches back to the always open passage when power is off.

[0047] Example 1

[0048] Referring to Figures 1-4The beverage machine reverse flushing system in the embodiment comprises, in sequence, a bean grinding assembly, a brewing assembly, a heating assembly, a water system, and a residue discharge assembly. The residue discharge assembly is connected to the brewing assembly and specifically comprises a coffee bin 9, a grinder 10, a brewer 4, a high-pressure two-position three-way valve, a three-way valve, a water outlet nozzle 5, a waste water tray 6, a safety valve 17, a boiler 3, a pressure sensor 15, a temperature sensor 16, a one-way valve 13, a pump 2, a water source 1, and a flow meter 14.

[0049] The grinder 10 is connected to the lower end of the coffee bin 9. The grinder 10 is connected to the lower end of the brewer 4. The coffee bin 9 is used to store coffee beans. The grinder 10 is used to grind the coffee beans into coffee powder. The ground coffee powder enters the brewer 4 through a connecting pipe.

[0050] The brewer 4 comprises a brewing part 41 and a driving part 42. The brewing part 41 of the brewer 4 is provided with a first pipe 411 at the upper end and a second pipe 413 at the lower end, respectively, for water inlet and outlet of the brewer 4. The first pipe 411 at the upper end is connected to the first end of the second high-pressure two-position three-way valve 8 and to the second end of the upper plunger 416. The upper plunger 416 is provided with a first sealing ring 418 below. The first sealing ring 418 is provided with an upper filter screen 414 below. The upper filter screen 414 is provided with a cavity 412 below. The cavity 412 is provided with a lower filter screen 415 at the bottom end. The lower filter screen 415 is provided with a second sealing ring 419 below. The second sealing ring 419 is provided with a lower plunger 417 below. The first end of the second pipe 413 is connected to the lower plunger 417. The first pipe 411 passes through the upper plunger 416 and the cavity 412 to communicate. The second pipe 413 passes through the lower plunger 417 and the cavity 412 to communicate. The first pipe 411, the cavity 412, and the second pipe 413 form a stable communicating pipe.

[0051] It should be noted that the mesh aperture of the upper filter screen 414 ranges from 0.1 mm to 0.3 mm, and the mesh aperture of the lower filter screen 415 ranges from 0.4 mm to 2 mm. The mesh aperture of the upper filter screen 414 is small, which can filter out finer powder particles when making coffee, so that the quality of the coffee is better. The mesh aperture of the lower filter screen 415 is large, which allows the fine powder particles filtered out by the upper filter screen 414 to pass through during reverse flushing, so that the fine powder particles are not left inside the cavity 412. The reverse flushing has a better cleaning effect. The cavity 412 is used to store the ground coffee powder. The upper plunger 416 and the lower plunger 417 play a role in maintaining the stability of the entire communicating pipe. The sealing ring plays a role in better maintaining the sealing of the cavity 412.

[0052] The first end of the first pipe 411 is connected with the first end of the second high-pressure two-position three-way valve 8, the third end of the second high-pressure two-position three-way valve 8 is connected with the water outlet nozzle 5, the second end of the second high-pressure two-position three-way valve 8 is connected with the first end of the first three-way valve 11, the second end of the first pipe 413 is connected with the first end of the first high-pressure two-position three-way valve 7, the second end of the first high-pressure two-position three-way valve 7 is connected with the second end of the first three-way valve 11, the third end of the first high-pressure two-position three-way valve 7 is connected with the waste water tray 6, and the third end of the first three-way valve 11 is connected with the top end of the boiler 3.

[0053] The inlet of the flow meter 14 is connected with the water source 1, the outlet of the flow meter 14 is connected with the first end of the pump 2, the second end of the pump 2 is connected with the second end of the second three-way valve 12, a one-way valve 13 is arranged on the passage between the second end of the pump 2 and the second end of the second three-way valve 12, the third end of the second three-way valve 12 is connected with the first end of the safety valve 17, and the second end of the safety valve 17 is connected with the waste water tray 6. The one-way valve 13 prevents water from flowing back to the pump 2, thereby affecting the conveying efficiency of the pump 2, the flow meter 14 measures the water inflow speed of coffee, the safety valve 17 is a spring valve structure, when the spring valve bears pressure exceeding the pressure limit, the spring valve is automatically opened under pressure to release the excess pressure, and when the pressure is reduced, the spring valve is automatically closed, thereby playing a role in protecting the normal operation of the entire waterway system when the instantaneous water pressure in the boiler is greater than 13 bar in the process of heating the boiler, the process of water pump replenishment and the process of coffee brewing.

[0054] The top end of the boiler 3 is respectively provided with a pressure sensor 15 and a temperature sensor 16, the temperature sensor 16 measures the water temperature of the boiler 3, provides parameters for controlling the water temperature of the boiler 3, and provides a reference for the coffee machine control system to control the heating and stopping heating process, and the pressure sensor 15 monitors the pressure in the entire beverage machine waterway and provides signal feedback, and issues a fault alarm when the pressure in the waterway exceeds the safety range difference for a long time.

[0055] It should be noted that the reverse cleaning method adopted by the utility model is high-temperature and high-pressure flushing, the flushing time is defaulted to 10s-20s, the flushing time can be set by the customer, the reverse flushing is defaulted to be started according to the coffee water inflow speed and the pressure of the brewer 4, the reverse flushing is performed after the coffee is made when the coffee flow speed is lower than 3ml / s, the reverse flushing is performed after the coffee is made when the coffee making pressure is higher than 15Bar, the use time length or the number of cups of output beverage can also be set for cleaning, and all parameters can be set by the customer.

[0056] The above-mentioned embodiments only illustrate the technical concept and characteristics of the present application, and the purpose is to enable those skilled in the art to understand the content of the present application and to implement it, and cannot limit the protection scope of the present application. Any equivalent transformation or modification according to the spirit and essence of the present application should be covered within the protection scope of the present application.

Claims

1. A reverse flushing system of a beverage machine, comprising a grinding assembly, a brewing assembly, a heating assembly, a water system and a residue discharge assembly connected in sequence, wherein the residue discharge assembly is connected to the brewing assembly, and characterized in that: the system further comprises a first high-pressure two-position three-way valve and a second high-pressure two-position three-way valve, the water system comprises a water source and a pump connected in sequence, the heating assembly comprises a boiler, the brewing assembly comprises a brewer and a water outlet connected in sequence, and the residue discharge assembly comprises a waste water tray; the brewer comprises a brewing part and a driving part, the brewing part comprises a first pipe, a cavity, a second pipe, an upper filter screen and a lower filter screen; a first end of the first pipe is connected to a first end of the second high-pressure two-position three-way valve, and a second end of the first pipe is connected to the cavity; a first end of the second pipe is connected to the cavity, and a second end of the second pipe is connected to a first end of the first high-pressure two-position three-way valve; a top end of the cavity is provided with the upper filter screen, and a bottom end of the cavity is provided with the lower filter screen; a top end of the boiler is connected to a second end of the first high-pressure two-position three-way valve and a second end of the second high-pressure two-position three-way valve respectively; a third end of the second high-pressure two-position three-way valve is connected to the water outlet, and a third end of the first high-pressure two-position three-way valve is connected to the waste water tray. The grinding assembly comprises a coffee bin and a grinder, the coffee bin is mounted on a top end of the grinder, and a bottom end of the grinder is connected to the brewer. The system further comprises a first three-way valve and a second three-way valve, the pump comprises an inlet and an outlet, a bottom end of the boiler is connected to a first end of the first three-way valve, an outlet of the pump is connected to a second end of the first three-way valve, a third end of the first three-way valve is connected to the waste water tray; a top end of the boiler is connected to a first end of the second three-way valve, a second end of the second three-way valve is connected to a second end of the first high-pressure two-position three-way valve, a third end of the second three-way valve is connected to a second end of the second high-pressure two-position three-way valve, a third end of the second three-way valve is connected to a first end of a safety valve, and a second end of the safety valve is connected to the waste water tray. A one-way valve is arranged between the outlet of the pump and the second end of the first three-way valve. The system further comprises a flow meter, and the inlet of the pump is connected to the flow meter.

2. A reverse flush system for a beverage machine as claimed in claim 1, wherein: A pressure sensor is arranged on the boiler.

3. A reverse flush system for a beverage machine as defined in claim 1, wherein: A temperature sensor is arranged on the boiler.

4. A reverse flush system for a beverage machine as claimed in claim 3, wherein: A mesh aperture of the upper filter screen ranges from 0.1 mm to 0.3 mm, and a mesh aperture of the lower filter screen ranges from 0.4 mm to 2 mm.

5. A reverse flush system for a beverage machine as defined in claim 3, wherein: The brewer further comprises an upper plunger and a lower plunger; the upper plunger is arranged on a top end of the upper filter screen, and the lower plunger is arranged on a bottom end of the lower filter screen.

6. A reverse flush system for a beverage machine as defined in claim 1, wherein: A sealing ring is arranged on a bottom end of the upper plunger, and a sealing ring is arranged on a top end of the lower plunger.

7. A reverse flush system for a beverage machine as defined in claim 1, wherein: ​ 8. A reverse flush system for a beverage machine as defined in claim 1, wherein: ​ 9. A reverse flush system for a beverage machine as defined in claim 1, wherein: ​ 10. A reverse flush system for a beverage machine as claimed in claim 9, wherein: ​

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