CN117882978A - Milk path system of full-automatic commercial coffee machine - Google Patents

Abstract

The invention discloses a milk path system of a full-automatic commercial coffee machine, which relates to the technical field of beverage machines and comprises a milk foam manufacturing module, a milk storage module, a waterway module and a precooling pipeline module, wherein the precooling pipeline module precools a pipeline flowing through cold milk or cold milk foam through precooled water, and the precooled water flows into a waste water bucket through a milk outlet valve; the preheating pipeline module preheats a pipeline through which hot milk or hot milk foam flows through preheated water, and the preheated water flows into the waste water bucket through the milk outlet valve; the milk path flushing module sequentially flushes residual milk in the pipeline at preset interval time according to the manufacturing flow of milk beverage and/or the collected residual milk concentration and temperature at each one-way valve; the milk channel deep cleaning module is used for supplementing clean water to wash the pipeline after dissolving residual milk in the pipeline. The invention ensures that the milk temperature is not changed due to the pipeline, ensures that the milk pump is not easy to generate heat in the cleaning process, prolongs the service life of the milk pump, and avoids the risk of blockage caused by milk scale.

Description

Milk path system of full-automatic commercial coffee machine

Technical Field

The invention relates to the technical field of beverage machines, in particular to a milk path system of a full-automatic commercial coffee machine.

Background

With the development of full-automatic commercial coffee machines, the flavor of coffee in the market is more and more, and the requirements of fresh milk also become the standard of the full-automatic commercial coffee machines, but the clean problem of the fresh milk system is also highlighted, and how to clean the fresh milk pipeline quickly and deeply is important.

The existing fresh milk system of the full-automatic commercial coffee machine on the market has the following problems:

1. the temperature of the cup milk is unstable, and the temperature of the cold milk and the first half of the cold milk foam is usually higher; the temperature of the hot milk and the first half of the hot milk foam is lower.

2. The service life of the breast pump is low, the breast pump is frequently maintained, and the cost is high;

3. the milk way is not cleaned in place, the whole pipeline cannot be covered, and residual milk exists in the pipeline and can deteriorate;

4. the pipeline is easy to be fouled with milk dirt and is blocked.

The problems bring bad experience to normal operation of stores, and the operation and maintenance times and operation and maintenance time of operators are increased, so that the operation cost is increased.

Therefore, how to ensure that the milk temperature is not changed due to the pipeline, and the problems that the milk pump is not easy to generate heat and the blockage risk caused by milk scale is avoided in the cleaning process are needed to be solved.

Disclosure of Invention

The present invention has been made in view of the above problems, and it is an object of the present invention to provide a milk circuit system for a fully automatic commercial coffee machine that overcomes all or at least some of the problems described above.

The milk path system of the full-automatic commercial coffee machine comprises a milk foam making module, a milk storage module and a water path module for providing milk foam making water for the milk foam making module;

The precooling pipeline module comprises a water inlet valve, a water pump, a cold water valve and a precooling preheating valve, and is used for precooling pipelines flowing through cold milk or cold milk foam through precooled water, and after precooling is finished, the precooled water flows through a milk outlet valve and enters a waste water barrel;

the preheating pipeline module comprises a water inlet valve, a water pump, a hot water valve, a steam valve and a pre-cooling preheating valve, and is used for preheating a pipeline through which hot milk or hot milk foam flows through by preheated water and leading the preheated water to enter a waste water bucket through a milk outlet valve after the preheating is finished;

the milk way flushing module is used for flushing residual milk in the pipeline by cold water, cold and hot mixed water and cold water at preset interval time according to the manufacturing flow of milk beverage and/or the collected residual milk concentration and temperature at each one-way valve;

And the milk path deep cleaning module is used for supplementing clean water to flush the pipeline after the residual milk in the pipeline is dissolved by the cleaning agent in the cleaning box so as to avoid blockage of milk scale.

Still further, the system is provided with hot water boiler and steam boiler, hot water boiler pass through the steam boiler moisturizing valve with steam boiler is connected, hot water boiler passes through the check valve and is connected with the intake pump, steam boiler passes through the steam valve and is connected with fresh milk ware.

Still further, the system is provided with a water inlet solenoid valve connected to a water source, the water inlet solenoid valve being connected to a water inlet pump through a flow meter.

Furthermore, the milk outlet valve is a milk outlet three-way valve, and the milk outlet three-way valve is respectively connected with the outlet nozzle, the waste water bucket and the fresh milk machine.

Still further, the system is provided with a first safety valve, the first safety valve is connected with the waste water tray, the hot water boiler, the first check valve and the second check valve respectively, and the waste water tray is connected with the waste water bucket.

Still further, the system is provided with an air valve connected with a third one-way valve connected with the milk inlet valve.

Still further, the system is provided with a breast pump, which is connected with the milk inlet valve and the fresh milk container, respectively, and the milk inlet valve is connected with the milk box.

Still further, the system is provided with a flowmeter, which is connected with the water inlet electromagnetic valve and the water inlet pump respectively.

Still further, each check valve is provided with a residual milk concentration sensor and a residual milk temperature sensor respectively, and the residual milk concentration sensor and the residual milk temperature sensor transmit collected concentration and temperature data to the milk path flushing module through electric connection.

Still further, according to the collected concentration and temperature of the residual milk at each one-way valve, the method sequentially uses cold water, cold and hot mixed water and residual milk in a cold water flushing pipeline at preset interval time comprises the following steps:

Calculating an automatic cleaning coefficient according to the collected residual milk concentration and temperature at each one-way valve;

sequentially using cold water, cold and hot mixed water and residual milk in a cold water flushing pipeline at preset intervals according to the automatic cleaning coefficient;

The calculation formula of the automatic cleaning coefficient is as follows:

Wherein delta _t is an automatic cleaning coefficient, C (T) is residual milk concentration at T time, T (T) is temperature at T time, alpha is relative volatility of residual liquid at temperature T (T), b is an antoni constant of residual liquid at temperature T (T), and beta is a preset threshold.

The milk path system of the full-automatic commercial coffee machine comprises a milk foam making module, a milk storage module and a water path module for providing milk foam making water for the milk foam making module; the precooling pipeline module comprises a water inlet valve, a water pump, a cold water valve and a precooling preheating valve, and is used for precooling pipelines flowing through cold milk or cold milk foam through precooled water, and after precooling is finished, the precooled water flows through a milk outlet valve and enters a waste water barrel; the preheating pipeline module comprises a water inlet valve, a water pump, a hot water valve, a steam valve and a pre-cooling preheating valve, and is used for preheating a pipeline through which hot milk or hot milk foam flows through by preheated water and leading the preheated water to enter a waste water bucket through a milk outlet valve after the preheating is finished; the milk way flushing module is used for flushing residual milk in the pipeline by cold water, cold and hot mixed water and cold water at preset interval time according to the manufacturing flow of milk beverage and/or the collected residual milk concentration and temperature at each one-way valve; and the milk path deep cleaning module is used for supplementing clean water to flush the pipeline after the residual milk in the pipeline is dissolved by the cleaning agent in the cleaning box so as to avoid blockage of milk scale. The invention ensures that the milk temperature is not changed due to the pipeline, ensures that the milk pump is not easy to generate heat in the cleaning process, prolongs the service life of the milk pump, and avoids the risk of blockage caused by milk scale.

Drawings

Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to designate like parts throughout the figures. In the drawings:

FIG. 1 shows a schematic diagram of the milk path system of a fully automatic commercial coffee machine in accordance with an embodiment of the present invention;

Fig. 2 shows a milk path system schematic of a fully automatic commercial coffee machine according to an embodiment of the invention.

Reference numerals

1. Water inlet electromagnetic valve

2. Water source

3. First safety valve

4. Waste water tray

5. Waste water bucket

6. Flowmeter for measuring flow rate

7. Water inlet pump

8. First one-way valve

9. Third one-way valve

10. Nozzle for discharging

11. Cup

12. Milk outlet three-way valve

12-0 Milk outlet three-way valve inlet

12-1 Milk outlet three-way valve outlet

12-2 Milk outlet three-way valve outlet

13. Hot water boiler

14. Steam boiler

15. Water supplementing valve for steam boiler

15-1 Steam boiler water supplementing valve inlet

15-2 Steam boiler water supplementing valve outlet

16. Second safety valve

17. Steam valve

17-1 Steam valve inlet

17-2 Steam valve outlet

18. Milk pump

19. Fresh milk device

20. Milk inlet valve

21. Second one-way valve

22. Air valve

23. Air-conditioner

24. Precooling preheating valve

24-1 Precooling preheating valve inlet

24-2 Precooling preheating valve outlet

25. Hot water valve

26. Cold water valve

27. Cleaning box

28. Refrigerator with a refrigerator body

29. Milk box

Detailed Description

Exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present invention are shown in the drawings, it should be understood that the present invention may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

Fig. 1 shows a schematic structure of a milk path system of a fully automatic commercial coffee machine according to an embodiment of the present invention. The invention designs a milk path system of a full-automatic commercial coffee machine for solving the problems:

1. Cold water and hot water are added to perform the functions of pre-cooling and preheating pipelines, so that the milk temperature change caused by the pipelines is avoided;

2. the cold water and hot water are used for cleaning alternately, so that the milk pump is not easy to generate heat in the cleaning process, and the service life of the milk pump is prolonged;

3. The whole pipeline can be cleaned without dead angles by utilizing a mode of combining positive rotation and negative rotation of the breast pump;

4. The water mixing function is realized on the waterway, and the phenomenon that the milk scale is generated and the blockage is caused by directly flushing residual milk in the milk channel with water with higher temperature is avoided; before deep cleaning, the milk channel is pumped out, and then the pipeline is flushed by cold water, so that the risk of generating milk scale is further reduced.

Specifically, the method comprises the following steps: the milk foam manufacturing module, the milk storage module and the waterway module for providing milk foam manufacturing water for the milk foam manufacturing module. The milk foam preparation module is used for preparing milk foam, and the milk storage module is used for storing milk.

The precooling pipeline module comprises a water inlet valve, a water pump, a cold water valve and a precooling preheating valve, and is used for precooling pipelines flowing through cold milk or cold milk foam through precooled water, and after precooling is finished, the precooled water flows through a milk outlet valve and enters the waste water barrel.

The main function of the precooling pipeline module is to precool the pipeline for flowing cold milk or cold milk foam, the precooling temperature is lower than the normal temperature of liquid in the pipeline, and the precooling can be performed by adopting normal warm water, ice salt water or other low-temperature liquid. As shown in fig. 2, when milk is chilled, the water intake solenoid valve 1 is opened, the water intake pump 7 is opened, the cold water valve 26 is opened, the pre-cooling and pre-heating valve 24 is opened, and after passing through the fresh milk machine 19, the water flows through the 0 to 2 ports of the milk outlet valve (the milk outlet three-way valve 12) and then flows to the waste water bucket 5. After the precooling is finished, the milk inlet valve 20 is opened, the milk pump 18 is started, and after passing through the fresh milk machine 19, the milk flows through the milk outlet valve (the milk outlet three-way valve 12), then flows to the mouth 10 and then flows into the waste water bucket 5.

In the case of frothing milk, the precooling process is the same as the milk cooling process, after precooling is finished, the milk inlet valve 20 and the air valve 22 are simultaneously opened, the milk pump 18 is opened, the milk passes through the milk outlet valve (the milk outlet three-way valve 12) and then flows into the waste water bucket 5 after passing through the milk fresh machine 19, and then flows into the mouth 10.

The preheating pipeline module comprises a water inlet valve, a water pump, a hot water valve, a steam valve and a pre-cooling preheating valve, and is used for preheating pipelines flowing through hot milk or hot milk foam through preheated water and enabling the preheated water to enter the waste water bucket through a milk outlet valve after the preheating is finished.

The preheating temperature required for preheating the pipeline module should be higher than the normal temperature of the liquid in the pipeline, for example, hot water or steam heated by a steam boiler is used as heating liquid to avoid solidification or other adverse effects of the liquid in the pipeline. As shown in fig. 2, when milk is heated, the water inlet solenoid valve 1 is opened, the water inlet pump 7 is opened, the hot water valve 25 is opened, the pre-cooling and pre-heating valve 24 is opened, and after passing through the fresh milk container 19, the water flows through the 0 to 2 mouths of the milk outlet valve (the milk outlet three-way valve 12) and then flows to the waste water bucket 5. The steam can be directly preheated, the process is that the steam valve 17 is opened, after the steam passes through the fresh milk device 19, the steam flows through the 0-2 ports of the milk outlet valve and the milk outlet three-way valve 12) and then flows to the waste water bucket 5, and one of the two modes can be selected, and the process is not limited herein. After the preheating is finished, the milk inlet valve 20 is opened, the milk pump 18 is started, the steam valve 17 is opened, the fresh milk passes through the fresh milk machine 19, flows through the milk outlet valve (the milk outlet three-way valve 12), then flows into the mouth 10 and finally flows into the waste water bucket 5.

When the milk foam is heated, the preheating process is the same as the process of heating milk, after the preheating is finished, the milk inlet valve 20 and the air valve 22 are simultaneously opened, the milk pump 18 is opened, the steam valve 17 is opened, the milk passes through the fresh milk device 19, flows through the milk outlet valve (the milk outlet three-way valve 12), then flows into the mouth 10, and finally flows into the waste water bucket 5.

And the milk path flushing module is used for flushing residual milk in the pipeline by cold water, cold and hot mixed water and cold water at preset interval time according to the manufacturing flow of milk beverage and/or the collected residual milk concentration and temperature at each one-way valve.

As shown in fig. 2, the milk path flushing comprises the steps of:

(1) Firstly, residual milk in a pipeline is emptied by cold water, and then the residual milk passes through a water inlet electromagnetic valve 1, a flowmeter 6, a water inlet pump 7, a cold water valve 26, a milk pump 18 and a fresh milk device 19 in sequence, and two steps are carried out, namely, the following step one: firstly, passing through 0 to 2 ports of a milk outlet valve (a milk outlet three-way valve 12) and a wastewater barrel 5; step two: then the waste water passes through 0 to 1 port of a milk outlet valve (a milk outlet three-way valve 12), a mouth 10, a waste water disc 4 and a waste water barrel 5; in step two, the milk inlet valve 20 and the air valve 22 are not opened;

(2) Then the pipeline is flushed by cold and hot mixed water, the pipeline sequentially passes through the water inlet electromagnetic valve 1, the flowmeter 6 and the water inlet pump 7, the two branches pass through the cold water valve 26, the two branches pass through the one-way valve (the first one-way valve 8), the hot water boiler 13 and the hot water valve 25, the two branches meet and then are mixed into warm water (the water temperature can be set), after the two branches pass through the milk pump 18 and the fresh milk device 19, the two branches are divided into two steps, namely: firstly, passing through 0 to 2 ports of a milk outlet valve (a milk outlet three-way valve 12) and a wastewater barrel 5; step two: then the waste water passes through 0 to 1 port of a milk outlet valve (a milk outlet three-way valve 12), a mouth 10, a waste water disc 4 and a waste water barrel 5; in step two, the milk inlet valve 20 and the air valve 22 are not opened;

(3) The pipeline is flushed with cold water again, and the temperature of the milk pump 18 is reduced, and the pipeline sequentially passes through the water inlet electromagnetic valve 1, the flowmeter 6, the water pump 7, the cold water valve 26, the milk pump 18 and the fresh milk machine 19, and is divided into two steps, namely, the first step: firstly, passing through 0 to 2 ports of a milk outlet valve (a milk outlet three-way valve 12) and a wastewater barrel 5; step two: then the waste water passes through 0 to 1 port of a milk outlet valve (a milk outlet three-way valve 12), a mouth 10, a waste water disc 4 and a waste water barrel 5; in the second step, the milk inlet valve 20 and the air valve 22 are not opened;

(4) Closing the actuator/component of the above steps, opening the air valve 22, activating the breast pump 18, and emptying the line of residual water; the residual water sequentially passes through a milk pump 18 and a fresh milk machine 19, and is divided into two steps, namely: firstly, passing through 0 to 2 ports of a milk outlet valve (a milk outlet three-way valve 12) and a wastewater barrel 5; step two: then the waste water passes through 0 to 1 port of a milk outlet valve (a milk outlet three-way valve 12), a mouth 10, a waste water disc 4 and a waste water barrel 5; in the second step, the milk inlet valve 20 is not opened;

(5) Closing the air valve 22, opening the milk inlet valve 20, and activating the milk pump 18 in reverse, pushing milk from the section of tube from the milk inlet valve 20 to the milk tank 29 into the milk tank 29.

And the milk path deep cleaning module is used for supplementing clean water to flush the pipeline after the residual milk in the pipeline is dissolved by the cleaning agent in the cleaning box so as to avoid blockage of milk scale.

As shown in fig. 2, the milk road deep cleaning includes the steps of:

(1) After the milk pipe is put into the cleaning box 27, the milk inlet valve 20 is opened, the milk pump 18 is opened in the forward direction, residual milk in the pipeline is pumped out, and after passing through the fresh milk device 19, the residual milk is discharged from the 0-2 port of the milk outlet valve (the milk outlet three-way valve 12) and finally flows into the wastewater barrel 5;

(2) Closing the milk inlet valve 20, closing the air valve 22, starting the water inlet pump 7, opening the milk pump 18 in the forward direction, opening the cold water valve 26, flushing the pipeline with cold water in sequence, and then dividing into two steps, namely: firstly, passing through 0 to 2 ports of a milk outlet valve (a milk outlet three-way valve 12) and a wastewater barrel 5; step two: then the waste water passes through 0 to 1 port of a milk outlet valve (a milk outlet three-way valve 12), a mouth 10, a waste water disc 4 and a waste water barrel 5;

(3) Putting cleaning pill or medicine powder and medicine into a cleaning box 27, closing a milk pump 18, closing an air valve 22, opening a milk inlet valve 20, opening a water inlet pump 7, pumping water into the cleaning box 27 through a hot water valve 25 and a cold water valve 26 for dissolving, opening the milk inlet valve 20, closing the air valve 22 after the cleaning pill or medicine powder and medicine powder are fully mixed, opening the milk pump 18 forward, pumping the medicine liquid out of the cleaning box 27 until the medicine liquid is pumped out, passing through the milk pump 18, passing through a fresh milk machine 19, and dividing into two steps: firstly, passing through 0 to 2 ports of a milk outlet valve (a milk outlet three-way valve 12) and a wastewater barrel 5; step two: then the waste water passes through 0 to 1 port of a milk outlet valve (a milk outlet three-way valve 12), a mouth 10, a waste water disc 4 and a waste water barrel 5;

(4) Closing the milk pump 18, opening the milk inlet valve 20, closing the air valve 22, opening the cold water valve 26, opening the water pump 7, starting to replenish the clean water into the cleaning tank 27, then closing the water inlet pump 7, closing the cold water valve 26, starting the milk pump 18 in the forward direction, opening the milk inlet valve 20, closing the air valve 22, starting to pump the clean water flushing pipeline until the clean water is pumped out, passing through the milk pump 18 and then through the fresh milk machine 19, and then dividing into two steps, namely: firstly, passing through 0-2 mouths of a milk outlet valve (a milk outlet three-way valve 12) and a wastewater barrel; step two: then the waste water passes through 0 to 1 port of a milk outlet valve (a milk outlet three-way valve 12), a mouth 10, a waste water disc 4 and a waste water barrel 5;

(5) The milk pump 18 is opened in the forward direction, the milk inlet valve 20 is opened, the air valve 22 is closed, residual water in the pipeline is emptied, and after passing through the milk pump 18, the residual water passes through the fresh milk machine 19, and then the two steps are divided into the first step: firstly, passing through 0 to 2 ports of a milk outlet valve (a milk outlet three-way valve 12) and a wastewater barrel 5; step two: then the waste water passes through 0 to 1 port of a milk outlet valve (a milk outlet three-way valve 12), a mouth 10, a waste water disc 4 and a waste water barrel 5;

in this embodiment, according to the incomplete milk concentration and the temperature of each check valve department of gathering, calculate self-cleaning coefficient according to concentration and temperature, then start or close milk way flushing module and milk way degree of depth cleaning module according to self-cleaning coefficient, realize self-cleaning to reduce operator's fortune dimension number of times and fortune dimension duration, and then reduce the running cost. The residual milk concentration at each one-way valve is collected, for example, by a liquid concentration sensor (typically dependent on the conductivity or optical properties of the fluid, etc.) and a temperature sensor.

Still further, the system is provided with a hot water boiler 13 and a steam boiler 14, the hot water boiler 13 is connected with the steam boiler 14 through a steam boiler water supplementing valve 15, the hot water boiler 14 is connected with a water inlet pump through a one-way valve (a first one-way valve 8), and the steam boiler 14 is connected with a fresh milk machine 19 through a steam valve 17.

Still further, the system is provided with a water inlet solenoid valve 1 connected to a water source, said water inlet solenoid valve 1 being connected to a water inlet pump 7 via a flow meter 6.

Further, the milk outlet valve is a milk outlet three-way valve 12, and the milk outlet three-way valve 12 is respectively connected with the outlet nozzle 10, the waste water bucket 5 and the fresh milk container 19.

Still further, the system is provided with a first safety valve 3, the first safety valve 3 being connected with a waste water tray 4, a hot water boiler 13, a first one-way valve 8 and a second one-way valve 21, respectively, the waste water tray 4 being connected with a waste water tub 5.

Still further, the system is provided with an air valve 22, which air valve 22 is connected to a third one-way valve 9, which third one-way valve 9 is connected to the milk inlet valve 20.

Still further, the system is provided with a breast pump 18, the breast pump 18 being connected to the milk inlet valve 20, the fresh milk container 19, respectively, the milk inlet valve 20 being connected to a milk tank 29.

Further, the system is provided with a flow meter 6, and the flow meter 6 is respectively connected with the water inlet electromagnetic valve 1 and the water inlet pump 7.

Still further, each one-way valve (the first one-way valve 8, the second one-way valve 21 and the third one-way valve 9) is respectively provided with a residual milk concentration sensor (not shown in the figure) and a residual milk temperature sensor (not shown in the figure), the probes of the residual milk concentration sensor and the temperature sensor can be packaged by stainless steel, and can be waterproof, dampproof and rust-proof, and the collected concentration and temperature data of the residual milk concentration sensor and the residual milk temperature sensor are transmitted to the milk path flushing module through electric connection.

Still further, according to the collected concentration and temperature of the residual milk at each one-way valve, the method sequentially uses cold water, cold and hot mixed water and residual milk in a cold water flushing pipeline at preset interval time comprises the following steps:

Calculating an automatic cleaning coefficient according to the collected residual milk concentration and temperature at each one-way valve;

sequentially using cold water, cold and hot mixed water and residual milk in a cold water flushing pipeline at preset intervals according to the automatic cleaning coefficient;

The calculation formula of the automatic cleaning coefficient is as follows:

The delta _t is an automatic cleaning coefficient, used for determining when cleaning is needed, and can be a preset time interval or a function related to time, used for triggering a cleaning process, C (T) is residual milk concentration at time T, used for evaluating the milk quantity in a pipeline and whether cleaning is needed, T (T) is pipeline temperature at time T, volatilization and cleaning effects of residual milk are affected, alpha is relative volatility of residual liquid at temperature T (T), relative volatility is the ratio of volatility of volatile components in residual liquid to volatility of difficult volatile components, the volatilization characteristic of residual milk at a specific temperature can be determined, b is an antoni constant of residual liquid at temperature T (T), and can be flexibly set according to the searched antoni constant table and experimental effect, beta is a preset threshold value, used for judging whether cleaning is needed, and when one or more parameters (such as C (T), T (T) and the like) exceed or are lower than the threshold value, the system triggers the cleaning process automatically. The automatic cleaning system can automatically adjust and trigger the cleaning process according to actual conditions, and the cleanness and sanitation of the pipeline are ensured. In this embodiment, the residual milk in the cold water, the cold-hot mixed water, and the cold water flushing pipeline may be sequentially used only according to a preset interval time. For example, the interval time is set to be 1 hour, and if no milk beverage is prepared within 1 hour from the end of the preparation of the previous cup of milk beverage, the milk path automatic flushing function is triggered; if milk drinks were to be served within 1 hour, the time interval of 1 hour was recalculated from this cup.

The milk path system of the full-automatic commercial coffee machine comprises a milk foam making module, a milk storage module and a water path module for providing milk foam making water for the milk foam making module; the precooling pipeline module comprises a water inlet valve, a water pump, a cold water valve and a precooling preheating valve, and is used for precooling pipelines flowing through cold milk or cold milk foam through precooled water, and after precooling is finished, the precooled water flows through a milk outlet valve and enters a waste water barrel; the preheating pipeline module comprises a water inlet valve, a water pump, a hot water valve, a steam valve and a pre-cooling preheating valve, and is used for preheating a pipeline through which hot milk or hot milk foam flows through by preheated water and leading the preheated water to enter a waste water bucket through a milk outlet valve after the preheating is finished; the milk way flushing module is used for flushing residual milk in the pipeline by cold water, cold and hot mixed water and cold water at preset interval time according to the manufacturing flow of milk beverage and/or the collected residual milk concentration and temperature at each one-way valve; and the milk path deep cleaning module is used for supplementing clean water to flush the pipeline after the residual milk in the pipeline is dissolved by the cleaning agent in the cleaning box so as to avoid blockage of milk scale. The invention ensures that the milk temperature is not changed due to the pipeline, ensures that the milk pump is not easy to generate heat in the cleaning process, prolongs the service life of the milk pump, and avoids the risk of blockage caused by milk scale.

It should be noted that the milk path system of the full-automatic commercial coffee machine provided by the application comprises the following innovation points or technical effects:

1. The functions of pre-cooling and pre-heating the pipeline are performed by adding cold water and hot water, so that the milk temperature change caused by the pipeline is avoided;

2. by adopting alternate cold and hot water cleaning, the milk pump is not easy to heat in the cleaning process, and the service life of the milk pump is prolonged;

3. The problem that the whole pipeline is clean and has no dead angle is solved by utilizing a mode of combining positive rotation and negative rotation of the breast pump;

4. The water mixing function is realized on the waterway, and the phenomenon that the milk scale is blocked due to the fact that residual milk in the milk channel is directly washed by water with higher temperature is avoided; and, before the deep cleaning, the pumping action of the milk channel is carried out first, and then the pipeline is flushed by cold water, so that the risk of generating milk scale is further reduced.

Claims (10)

1. The utility model provides a milk way system of full-automatic commercial coffee machine, includes milk bubble preparation module, milk storage module and to milk bubble preparation module provides milk bubble preparation water's water route module, its characterized in that still includes:

The precooling pipeline module comprises a water inlet valve, a water pump, a cold water valve and a precooling preheating valve, and is used for precooling pipelines flowing through cold milk or cold milk foam through precooled water, and after precooling is finished, the precooled water flows through a milk outlet valve and enters a waste water barrel;

the preheating pipeline module comprises a water inlet valve, a water pump, a hot water valve, a steam valve and a pre-cooling preheating valve, and is used for preheating a pipeline through which hot milk or hot milk foam flows through by preheated water and leading the preheated water to enter a waste water bucket through a milk outlet valve after the preheating is finished;

the milk way flushing module is used for flushing residual milk in the pipeline by cold water, cold and hot mixed water and cold water at preset interval time according to the manufacturing flow of milk beverage and/or the collected residual milk concentration and temperature at each one-way valve;

And the milk path deep cleaning module is used for supplementing clean water to flush the pipeline after the residual milk in the pipeline is dissolved by the cleaning agent in the cleaning box so as to avoid blockage of milk scale.

2. The milk circuit system of a fully automatic commercial coffee machine according to claim 1, wherein the system is provided with a hot water boiler and a steam boiler, the hot water boiler is connected with the steam boiler through a steam boiler water supplementing valve, the hot water boiler is connected with a water inlet pump through a one-way valve, and the steam boiler is connected with a fresh milk machine through a steam valve.

3. Milk circuit system of a fully automatic commercial coffee machine according to claim 1 or 2, characterized in that the system is provided with a water inlet solenoid valve connected to a water source, which water inlet solenoid valve is connected to a water inlet pump by means of a flow meter.

4. The milk circuit system of a fully automatic commercial coffee machine of claim 1, wherein the milk outlet valve is a milk outlet three-way valve, and the milk outlet three-way valve is connected with the outlet nozzle, the waste water bucket and the fresh milk container respectively.

5. The milk circuit system of a fully automatic commercial coffee machine according to claim 1, characterized in that the system is provided with a first safety valve, which is connected with a waste water tray, a hot water boiler, a first one-way valve and a second one-way valve, respectively, which waste water tray is connected with a waste water tub.

6. The milk circuit system of a fully automatic commercial coffee machine according to claim 5, characterized in that the system is provided with an air valve, which is connected with a third one-way valve, which is connected with the milk inlet valve.

7. The milk circuit system of a fully automatic commercial coffee machine according to claim 1, characterized in that the system is provided with a milk pump, which is connected to the milk inlet valve, the milk fresh machine, respectively, which is connected to a milk tank.

8. Milk circuit system of a fully automatic commercial coffee machine according to claim 1, characterized in that it is provided with a flow meter, which is connected to a water inlet solenoid valve, a water inlet pump, respectively.

9. The milk circuit system of a fully automatic commercial coffee machine of claim 6, wherein each one-way valve is provided with a residual milk concentration sensor and a residual milk temperature sensor, respectively, which transmit collected concentration and temperature data to the milk circuit flushing module through an electrical connection.

10. The milk circuit system of a fully automatic commercial coffee machine according to claim 8 or 9, wherein the sequential use of cold water, cold and hot mixed water, and residual milk in the cold water flushing line at predetermined intervals according to the collected residual milk concentration and temperature at each one-way valve further comprises:

Calculating an automatic cleaning coefficient according to the collected residual milk concentration and temperature at each one-way valve;

sequentially using cold water, cold and hot mixed water and residual milk in a cold water flushing pipeline at preset intervals according to the automatic cleaning coefficient;

The calculation formula of the automatic cleaning coefficient is as follows:

Wherein delta _t is an automatic cleaning coefficient, C (T) is residual milk concentration at T time, T (T) is temperature at T time, alpha is relative volatility of residual liquid at temperature T (T), b is an antoni constant of residual liquid at temperature T (T), and beta is a preset threshold.