Beverage device control method and beverage device

Abstract

The application provides a control method of a beverage device, comprising: starting counting of a number of beverage preparation completion signals after receiving an Nth beverage preparation signal; judging whether a value of the number of counts satisfies a first threshold relationship; when the value satisfies the first threshold relationship, controlling a first discharge valve on a first discharge pipeline to be opened for a first preset time length to discharge liquid in a first boiler; the first discharge pipeline is connected with the first boiler, and the first boiler is used for generating steam; the first threshold relationship is that the value is equal to an integer multiple of M; wherein N and M are both natural numbers greater than or equal to 1. In the process of using the first boiler to output steam, the application discharges the liquid in the first boiler for a small number of times, can keep the liquid in the first boiler clear, reduce scale generation, and can keep the water-steam state in the first boiler stable, while having little influence on the overall efficiency of the beverage device for making beverages.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of beverage preparation, and in particular to a beverage equipment control method and a beverage equipment. BACKGROUND

[0002] In a device for preparing a beverage, an internal or external water supply can be used to provide the water required to generate the beverage.

[0003] Currently, coffee machines and other beverage equipment on the market generally also have a boiler for generating steam. Steam can be used to prepare hot water, milk foam, or hot milk and other hot drinks. However, after the boiler has been working for a long time, the water inside the boiler will become increasingly turbid, and the pressure inside the boiler will increase, and the water vapor state will be unstable. In the prior art, a large amount of water needs to be periodically discharged to remove impurities from the boiler. However, the one-time discharge of a large amount of water will cause the boiler to be reheated, which is time-consuming and affects the experience of making the next cup of beverage. SUMMARY

[0004] An object of the present application is to provide a beverage equipment and a beverage equipment control method, which can keep the liquid in the first boiler clear, reduce scale formation, and maintain the stability of the water vapor state inside the first boiler, while having little effect on the overall efficiency of the beverage equipment in making beverages.

[0005] To achieve the above-mentioned objects, the present application provides a beverage equipment control method, comprising:

[0006] After receiving an Nth beverage preparation signal, starting a count of the number of beverage preparation completion signals;

[0007] determining whether the value of the count satisfies a first threshold relationship;

[0008] when the value satisfies the first threshold relationship, controlling a first discharge valve on a first discharge pipeline to open for a first preset time length to discharge the liquid in the first boiler; the first discharge pipeline is connected to the first boiler, and the first boiler is used to generate steam;

[0009] the first threshold relationship is that the value is equal to an integer multiple of M;

[0010] wherein N and M are both natural numbers greater than or equal to 1.

[0011] As a further improvement of an embodiment of the present application, after starting the count of the number of beverage preparation completion signals, the control method further comprises:

[0012] determining whether the value of the count satisfies a second threshold relationship;

[0013] when the value meets the second threshold relationship, controlling a second discharge valve on a second discharge pipeline to open for a second preset time length to discharge liquid in a second boiler, the second discharge pipeline being connected to the second boiler, the second boiler being configured to provide the liquid to the first boiler;

[0014] the second threshold relationship is that the value is equal to an integer multiple of J;

[0015] wherein the J is a natural number greater than or equal to 1.

[0016] As a further improvement of an embodiment of the present application, the J is greater than or equal to the M.

[0017] As a further improvement of an embodiment of the present application, the first boiler is provided with a liquid level sensor, and the control method further comprises a liquid supplementing step, the liquid supplementing step comprising:

[0018] detecting an operating parameter of the liquid level sensor;

[0019] when the operating parameter meets a liquid supplementing condition, controlling a water pump to start and controlling a liquid supply pipeline to open to supply liquid from the second boiler to the first boiler, the liquid supply pipeline being connected to a liquid outlet of the second boiler and a liquid inlet of the first boiler;

[0020] when the operating parameter does not meet the liquid supplementing condition, controlling the liquid supply pipeline to close.

[0021] As a further improvement of an embodiment of the present application, the first discharge pipeline is connected to a bottom of the first boiler, and the control method further comprises a liquid emptying step, the liquid emptying step comprising:

[0022] receiving an emptying signal;

[0023] controlling the first discharge valve to open to discharge liquid in the first boiler through the first discharge pipeline by steam generated in the first boiler.

[0024] As a further improvement of an embodiment of the present application, before controlling the first discharge valve to open, the liquid emptying step further comprises:

[0025] controlling a first steam supply pipeline to open to supply steam in the first boiler to a second boiler, the first steam supply pipeline being connected to a steam outlet of the first boiler and a liquid outlet of the second boiler;

[0026] controlling a second discharge valve on a second discharge pipeline to open to discharge liquid in the second boiler through the second discharge pipeline by steam from the first boiler, the second discharge pipeline being connected to a bottom of the second boiler.

[0027] As a further improvement of an embodiment of the present application, the first drain line is connected to a bottom of the first boiler, and the control method further comprises a descaling step, the descaling step comprising:

[0028] receiving a descaling signal;

[0029] controlling a water pump to operate and controlling a liquid supply line to open to supply a cleaning solution from a liquid supply source to a second boiler and from the second boiler to the first boiler, the liquid supply line connecting an inlet of the first boiler and an outlet of the second boiler;

[0030] controlling the first boiler to heat up and controlling the first drain valve to open to drain the cleaning solution in the first boiler through the first drain line by steam generated in the first boiler.

[0031] As a further improvement of an embodiment of the present application, before controlling the first drain valve to open, the descaling step further comprises:

[0032] controlling a first steam supply line to open to supply steam generated by the first boiler to the second boiler, the first steam supply line connecting a steam outlet of the first boiler and the outlet of the second boiler;

[0033] controlling a second drain valve on a second drain line to open to drain the cleaning solution in the second boiler through the second drain line by the steam, the second drain line being connected to a bottom of the second boiler.

[0034] Another object of the present application is to provide a beverage apparatus comprising:

[0035] a liquid supply source;

[0036] an outlet assembly for outputting a beverage;

[0037] a first boiler connected between the liquid supply source and the outlet assembly for generating steam;

[0038] a first drain line, an input end of the first drain line being connected to the first boiler, an output end of the first drain line being a fluid drain outlet, a first drain valve being arranged between the input end of the first drain line and the output end of the first drain line;

[0039] a controller electrically connected to the first drain valve, the controller being configured to execute the beverage apparatus control method according to any one of the above embodiments.

[0040] As a further improvement of the embodiment of the present application, the input end of the first discharge pipeline is connected to the bottom of the first boiler.

[0041] As a further improvement of the embodiment of the present application, a liquid level sensor is installed in the first boiler, and the installation position of the liquid level sensor is located in a position direction away from the input end of the first discharge pipeline, and the liquid level sensor is used to detect the liquid level signal in the first boiler.

[0042] As a further improvement of the embodiment of the present application, a water pump is connected between the liquid supply source and the first boiler.

[0043] The controller is electrically connected with the liquid level sensor, and the controller is further used to receive the working parameter of the liquid level sensor to obtain the liquid level signal in the first boiler, and when the working parameter meets the liquid supplement condition, the water pump is controlled to work to supply liquid from the liquid supply source to the first boiler.

[0044] As a further improvement of the embodiment of the present application, a second boiler and a second discharge pipeline are further included, the second boiler is connected between the liquid supply source and the outlet assembly, a water pump is connected between the second boiler and the liquid supply source, the second boiler is used to generate hot water, the input end of the second discharge pipeline is connected to the bottom of the second boiler, the output end of the second discharge pipeline is a fluid discharge outlet, and a second discharge valve is arranged between the input end of the second discharge pipeline and the output end of the second discharge pipeline.

[0045] As a further improvement of the embodiment of the present application, a first steam supply pipeline is further included, the first steam supply pipeline connects the steam outlet of the first boiler and the liquid outlet of the second boiler, the liquid outlet of the second boiler is located at the top of the second boiler, and the first steam supply pipeline is used to supply steam in the first boiler to the second boiler to discharge the liquid in the second boiler through the second discharge pipeline.

[0046] As a further improvement of the embodiment of the present application, the first steam supply pipeline is connected with an output communication valve, the output communication valve includes a first valve port, a second valve port and a third valve port, the first steam supply pipeline includes a first steam supply pipeline branch line connecting the steam outlet of the first boiler and the first valve port, the first steam supply pipeline further includes a communication pipeline connecting the second valve port and the liquid outlet of the second boiler, and a liquid supply pipeline is connected between the third valve port and the liquid inlet of the first boiler.

[0047] The steam of the first boiler can be sequentially supplied to the second boiler through the first steam supply pipeline branch line, the output communication valve and the communication pipeline.

[0048] The hot water of the second boiler can be supplied to the first boiler in sequence through the communication pipeline, the output communication valve and the liquid supply pipeline.

[0049] As a further improvement of the embodiment of the present application, the first discharge valve comprises a liquid outlet valve body, the liquid outlet valve body comprises an inlet, an outlet and a liquid passage, the inlet is communicated with the first boiler;

[0050] The liquid passage is provided with a flow passage opening at one end close to the inlet, and the other end of the liquid passage is communicated with the outlet;

[0051] The first discharge valve further comprises an electromagnetic driving assembly and a valve core assembly, the electromagnetic driving assembly is used to drive the valve core assembly to move to close or open the flow passage opening, and when the valve core assembly opens the flow passage opening, the inlet and the outlet are in fluid communication through the liquid passage.

[0052] As a further improvement of the embodiment of the present application, the first discharge valve further comprises a reset element connected with the valve core assembly;

[0053] Under the driving of the electromagnetic driving assembly, the valve core assembly can move away from the flow passage opening to open the flow passage opening;

[0054] Under the driving of the reset element, the valve core assembly can move towards the flow passage opening to close the flow passage opening.

[0055] As a further improvement of the embodiment of the present application, the valve core assembly comprises a sealing element used to seal the flow passage opening, the liquid outlet valve body comprises a flow passage wall forming the liquid passage, and one end of the flow passage wall forming the flow passage opening can abut against the sealing element to close the flow passage opening.

[0056] The beverage equipment and the beverage equipment control method provided by the embodiment of the present application can discharge part of the liquid in the first boiler after a certain number of beverages are made, i.e. discharge the liquid in the first boiler in a small amount and multiple times, so that the liquid in the first boiler can be kept clear, the scale formation can be reduced, the water vapor state in the first boiler can be kept stable, and the overall efficiency of the beverage equipment for making beverages is less affected. BRIEF DESCRIPTION OF DRAWINGS

[0057] Figure 1 is a schematic diagram of a liquid path system structure of the beverage equipment in the embodiment of the present application.

[0058] Figure 2 is a schematic diagram of a cross section of the first discharge valve in the embodiment of the present application.

[0059] Figure 3 isFigure 2 Another schematic view of the first discharge valve is shown.

[0060] Figure 4 is a schematic flow chart of a control method of a beverage equipment in an embodiment of the present application.

[0061] Figure 5 is Figure 1 A first boiler portion of the liquid circuit system is shown. DETAILED DESCRIPTION

[0062] The present application will be described in detail below with reference to specific embodiments shown in the drawings. However, these embodiments do not limit the present application, and any changes in structure, method, or function made by those of ordinary skill in the art based on these embodiments are included in the protection scope of the present application.

[0063] It should be understood that the terms "first", "second", and "third" used herein can be used interchangeably to distinguish one component from another component, and these terms are not intended to represent the position or importance of the respective components. The terms "upstream" and "downstream" refer to the relative direction with respect to the fluid flow in the fluid passage. For example, "upstream" refers to the direction of fluid flow, and "downstream" refers to the direction of fluid flow.

[0064] The present application provides a beverage equipment, which can be a coffee machine or other beverage equipment. Referring to Figure 1 In the embodiments provided by the present application, an automatic coffee machine is taken as an example for illustration. The automatic coffee machine generally includes a liquid supply source 30 for providing coffee brewing water, a brewer 38 for mixing and brewing water and coffee powder, a boiler for heating the supplied brewing water to form a coffee beverage through hot water extraction. The automatic coffee machine can also include a milk frother, which is provided with steam from the boiler, and the steam and milk are mixed to form hot milk, or the steam, air, and milk are mixed to form hot milk froth. The liquid flow path through which various beverages are extracted from the liquid supply source 30 to the user can be considered as the liquid circuit system 100 of the automatic coffee machine. The liquid circuit system 100 provided by the present application will be described in detail below.

[0065] Referring to Figure 1As shown, the liquid system 100 comprises a liquid source 30 and an outlet assembly 33. The outlet assembly 33 is used to output the beverage. The liquid system 100 can further comprise a brewer 38 connected between the liquid source 30 and the outlet assembly 33, and the beverage brewed by the brewer 38 can be discharged from the outlet assembly 33. The liquid source 30 can be a liquid tank detachably connected to the main body of the beverage device, and the user can manually add liquid to the liquid tank or connect an external water purifier to automatically add water to the liquid tank. Of course, the liquid source 30 can also be directly provided as an external water purifier, i.e., without providing a liquid tank on the main body of the beverage device, thereby reducing the size and cost of the beverage device.

[0066] The liquid source 30 can provide a plurality of different liquids. In the specific embodiments provided in the present application, the liquid source 30 comprises a first liquid source 31, which can be an external water purifier, for supplying water, and the beverage device can use the water supplied by the first liquid source 31 to make beverages. The liquid source 30 further comprises a second liquid source 32, which can be a liquid tank, and the liquid tank can be filled with cleaning solution, and when the user needs to clean the liquid system 100 of the beverage device, the cleaning solution can be supplied by the second liquid source 32.

[0067] The liquid system 100 further comprises a first boiler 10. The first boiler 10 is connected between the liquid source 30 and the outlet assembly 33, and the first boiler 10 is used to generate steam.

[0068] In an embodiment of the present application, the liquid system 100 further comprises a second boiler 20, which is also connected between the liquid source 30 and the outlet assembly 33, and the second boiler 20 can be used to output hot water, such as supplying hot water to the first boiler 10, or supplying hot water to the brewer 38.

[0069] The liquid system 100 further comprises a water pump. In the present embodiment, the water pump can comprise a first water pump 35 and a second water pump 36. The first water pump 35 is connected between the liquid source 30 and the first boiler 10, and by starting the first water pump 35, liquid can be supplied from the liquid source 30 to the first boiler 10. The first water pump 35 is also connected between the liquid source 30 and the second boiler 20, and by starting the first water pump 35, liquid can also be supplied from the liquid source 30 to the first boiler 10; the second water pump 36 is also connected between the liquid source 30 and the second boiler 20, and liquid can be supplied to the second boiler 20 by the second water pump 36.

[0070] The second boiler 20 can also be used to supply liquid to the first boiler 10. A liquid supply line 110 can be connected between the liquid inlet of the first boiler 10 and the liquid outlet of the second boiler 20, and the first water pump 35 or the second water pump 36 can be started to supply liquid from the second boiler 20 to the first boiler 10.

[0071] Of course, only one water pump can be provided to supply liquid to both the first boiler 10 and the second boiler 20.

[0072] In an embodiment provided by the present application, the liquid path system 100 further comprises a first discharge pipeline 11, an input end of the first discharge pipeline 11 is connected to the first boiler 10, and an output end of the first discharge pipeline 11 is a fluid discharge outlet. A first discharge valve 15 is arranged between the input end and the output end of the first discharge pipeline 11.

[0073] Opening the first discharge valve 15 can discharge the liquid in the first boiler 10 through the first discharge pipeline 11, and closing the first discharge valve 15 can prevent the liquid in the first boiler 10 from being discharged outward through the first discharge pipeline 11.

[0074] The beverage device can further comprise a waste liquid tray 37, and the output end of the first discharge pipeline 11 is communicated with the waste liquid tray 37. The liquid in the first boiler 10 can be discharged into the waste liquid tray 37 through the first discharge pipeline 11. The waste liquid tray 37 can be taken out of the beverage device, so that the user can conveniently take out the waste liquid tray 37 for cleaning.

[0075] Discharging the liquid in the first boiler 10 through the first discharge pipeline 11 can simultaneously discharge the scale and other impurities in the first boiler 10. The scale and other impurities are discharged through the first discharge pipeline 11, so that the scale and other impurities can be prevented from flowing through the pipeline between the first boiler 10 and the outlet assembly 33, and further, the scale and other impurities can be prevented from blocking the pipeline between the first boiler 10 and the outlet assembly 33, or damaging the valve body or other components arranged between the first boiler 10 and the outlet assembly 33.

[0076] Preferably, the input end of the first discharge pipeline 11 can be connected to the bottom of the first boiler 10. The scale and other impurities deposited at the bottom of the first boiler 10 can be discharged from the first discharge pipeline 11 as much as possible, so that a better descaling effect can be achieved.

[0077] In an embodiment of the present application, the first discharge valve 15 is an electromagnetic valve. Referring to Figure 2 、 Figure 3 The first discharge valve 15 comprises a liquid outlet valve body 151, and the liquid outlet valve body 151 comprises an inlet 152, an outlet 153, and a liquid passage 154. The inlet 152 is communicated with the first boiler 10. The liquid in the first boiler 10 can be sequentially discharged to the waste liquid tray 37 through the input end of the first discharge pipeline 11, the inlet 152, the liquid passage 154, the outlet 153, and the output end of the first discharge pipeline 11.

[0078] The liquid passage 154 has a flow passage opening 1541 at one end close to the inlet 152, and is in communication with the outlet 153 at the other end. The first drain valve 15 further comprises an electromagnetic drive assembly 158 and a valve core assembly 156. The electromagnetic drive assembly 158 is used to drive the valve core assembly 156 to move to close or open the flow passage opening 1541.

[0079] When the valve core assembly 156 opens the flow passage opening 1541, the inlet 152 and the outlet 153 are in fluid communication through the liquid passage 154. When the valve core assembly 156 closes the flow passage opening 1541, the flow path between the inlet 152 and the outlet 153 is cut off, as shown in Figure 2 and Figure 3 , Figure 2 and Figure 3 are schematic views when the valve core assembly 156 closes the flow passage opening 1541.

[0080] Further, in the present embodiment, the first drain valve 15 further comprises a reset element 157 connected with the valve core assembly 156. The reset element 157 can be a conical spring, which can be sleeved outside the valve core assembly 156.

[0081] Under the drive of the electromagnetic drive assembly 158, the valve core assembly 156 can move away from the flow passage opening 1541 to open the flow passage opening. Under the drive of the reset element 157, the valve core assembly 156 can move towards the flow passage opening 1541 to close the flow passage opening 1541.

[0082] The electromagnetic drive assembly 158 comprises a coil winding 1581 and an iron core 1582 installed in the coil winding 1581. The coil winding 1581 has an installation space 1583 formed inside, and the valve core assembly 156 and the iron core 1582 are at least partially located in the installation space 1583. When the coil winding 1581 is energized, the iron core 1582 is magnetized, and the electromagnetic drive assembly 158 drives the valve core assembly 156 to move towards the iron core 1582, i.e. to move in a direction away from the flow passage opening 1541, until the valve core assembly 156 contacts the iron core 1582, thereby opening the flow passage opening 1541.

[0083] The reset element 157 is also installed in the installation space 1583, and the two ends of the reset element 157 can respectively abut against the electromagnetic drive assembly 158 and the valve core assembly 156. When the valve core assembly 156 moves in a direction away from the flow passage opening 1541, the reset element 157 is elastically deformed and accumulates elastic force. When the coil winding 1581 is de-energized, the iron core 1582 loses magnetism, and the elastic force of the reset element 157 is released, thereby driving the valve core assembly 156 to move towards the flow passage opening 1541 to the position of closing the flow passage opening 1541. In this way, the opening and closing of the first drain valve 15, and further the opening and closing of the first drain line 11, can be controlled by controlling the energization and de-energization of the coil winding 1581.

[0084] The valve core assembly 156 further comprises a sealing member 1561 for sealing the flow passage opening 1541. The outlet valve body 151 comprises a flow passage wall 1542 forming the liquid passage 154, and the flow passage wall 1542 forms one end of the flow passage opening 1541 capable of abutting against the sealing member 1561 to seal and close the flow passage opening 1541. By providing the sealing member 1561, the closing effect of the valve core assembly 156 on the flow passage opening 1541 can be improved.

[0085] In an embodiment of the present application, a beverage equipment control method is also provided, which can be used in the beverage equipment of any embodiment of the present application. The beverage equipment can comprise a controller. The controller can be electrically connected with the first discharge valve 15. The controller can be configured to execute the beverage equipment control method of any embodiment of the present application.

[0086] Referring to Figure 4 A flow chart of the beverage equipment control method provided in an embodiment of the present application is shown. The beverage equipment control method comprises the following steps:

[0087] After receiving the Nth beverage preparation signal, starting the count of the number of beverage preparation completion signals;

[0088] Judging whether the value of the count satisfies a first threshold relationship;

[0089] When the value satisfies the first threshold relationship, controlling the first discharge valve 15 on the first discharge pipeline 11 to open for a first preset time length to discharge the liquid in the first boiler 10, the first discharge pipeline 11 being connected with the first boiler 10, and the first boiler 10 being used for generating steam;

[0090] The first threshold relationship is that the value is equal to an integer multiple of M; wherein N and M are both natural numbers greater than or equal to 1.

[0091] In the embodiment, the beverage equipment can have multiple beverage modes. The beverage equipment can have a control panel, and the user can select different beverage modes through the control panel to send corresponding beverage preparation signals.

[0092] In an embodiment, the beverage preparation signal can be any beverage preparation signal corresponding to a beverage mode.

[0093] For example, if N = 1 and M = 1, i.e. after receiving the first (N) beverage preparation signal, starting the count of the number of beverage preparation completion signals, and when the value of the count is equal to an integer multiple of 1 (M), i.e. each time a beverage preparation completion signal is received, controlling the first discharge valve 15 to open for a first preset time length, i.e. from the beginning of using the beverage equipment to make the first cup of beverage, after each cup of beverage is made, the first discharge valve 15 is controlled to open for a first preset time length.

[0094] If N = 1 and M = 3, after receiving the first (N) beverage preparation signal, a counter for counting the number of beverage preparation completion signals is started. When the count value is an integer multiple of 3 (M), that is, every three beverage preparation completion signals are detected (e.g., the value is equal to 3, 6, 9, 12...), the first discharge valve 15 is controlled to open for a first preset time. In other words, starting from making the first cup of beverage using the beverage equipment, after every three consecutive cups of beverage are made, the first discharge valve 15 is controlled to open for a first preset time. If N = 2 and M = 1, that is, starting from making the second cup (N), after every cup (M) of beverage is made, the first discharge valve 15 is controlled to open for a first preset time.

[0095] Similarly, if N=2 and M=3, that is, starting from the production of the second (N) drink, after every 3 (M) drinks are produced, the first discharge valve 15 is controlled to open for a first preset time.

[0096] In other embodiments provided by the present invention, the beverage preparation signal can be any beverage preparation signal corresponding to any beverage mode. Any beverage mode includes a steam beverage mode that uses steam in the first boiler 10 to prepare beverages and a normal beverage mode that does not use steam in the first boiler 10 to prepare beverages. Of course, the beverage preparation signal can also be only the beverage preparation signal corresponding to the steam beverage mode that uses steam in the first boiler 10 to prepare beverages.

[0097] Since steam is only output from the first boiler 10 when beverages are prepared using steam from the first boiler 10, changes in the steam state and pressure within the first boiler 10 are only caused by these changes. Therefore, when the beverage preparation signal is only the beverage preparation signal corresponding to the steam beverage mode that uses steam from the first boiler 10 to prepare beverages, the number of times the first discharge line 11 is opened can be reduced.

[0098] During the use of the first boiler 10, when the liquid inside the first boiler 10 evaporates to generate steam and is transported to the downstream pipeline, the pressure inside the first boiler 10 is prone to fluctuation, the evaporation and condensation balance of the liquid is easily broken, and the liquid inside the first boiler 10 is prone to suddenly boiling, which can easily cause a false increase in the liquid level inside the first boiler 10.

[0099] During the use of the first boiler 10, a portion of the superheated liquid, which is a mixture of liquid and steam, is discharged from the first boiler 10 in a timely manner through the first discharge pipeline 11. This can reduce the phenomenon of the liquid evaporation and condensation balance being broken, reduce the pressure inside the first boiler 10, and maintain the stability of the water and steam state inside the first boiler 10.

[0100] When the liquid level sensor 13 is arranged in the first boiler 10, the liquid level detection failure caused by the false increase of the liquid level can be avoided, and the misjudgment of the liquid level sensor 13 caused by the excessive internal pressure of the first boiler 10 can also be avoided. It can be understood that the pressure of the space above the liquid surface in the first boiler 10 increases, and the moisture content of the steam also increases, so that the liquid level sensor 13 and the liquid in the first boiler 10 are more likely to be conducted through the moisture-containing steam, causing the misjudgment of the liquid level sensor 13.

[0101] The impurities and dirt in the first boiler 10 can also be discharged through the first discharge pipeline 11, so as to avoid the liquid in the first boiler 10 being too turbid, and further prevent the calcium magnesium ions or other impurities from adhering to the liquid level sensor 13 to affect the sensitivity of the liquid level sensor 13. It can be understood that the sensitivity of the liquid level sensor 13 is low, and the misjudgment phenomenon is more likely to occur.

[0102] When the water level in the first boiler 10 is low, the first boiler 10 needs to be replenished by the second boiler 20, but if the liquid level probe 13 misjudges, the water level in the first boiler 10 may be low without replenishment, and the heating wire in the first boiler 10 still heats. In the case that the water level is low to a certain extent, the heating wire leaks liquid surface, which can cause dry burning and blackening, and reduce the service life of the first boiler 10.

[0103] A small amount of liquid is discharged from the first boiler 10 in multiple times, which does not affect the use of the user. After the first boiler 10 discharges the liquid through the first discharge pipeline 11 each time, the first boiler 10 also does not need to be replenished with a large amount of liquid, which does not affect the beverage making efficiency. And the discharged liquid will not be discharged from the outlet assembly 33, and the user experience is good.

[0104] Further, referring to Figure 1 In an embodiment of the present application, the beverage device further comprises a second discharge pipeline 21. The input end of the second discharge pipeline 21 is connected to the bottom of the second boiler 20, the output end of the second discharge pipeline 21 is a fluid discharge outlet, and the second discharge valve 22 is arranged between the input end and the output end of the second discharge pipeline 21.

[0105] The second discharge valve 22 can also be a solenoid valve. The structure of the second discharge valve 22 can be the same as that of the first discharge valve 15, which will not be described here.

[0106] By opening the second drain valve 22, the liquid in the second boiler 20 can be drained through the second drain line 21, and at the same time, the scale and other impurities deposited in the second boiler 20 can be drained through the second drain line 21. By connecting the input end of the second drain line 21 to the bottom of the second boiler 20, the scale deposited at the bottom of the second boiler 20 can be drained as much as possible along with the liquid through the second drain line 21 to the waste liquid tray 37, achieving a better descaling effect.

[0107] The liquid in the second boiler 20 can also be drained through the second drain line 21 to the waste liquid tray 37 for the user to clean.

[0108] In the embodiment, a liquid supply line 110 is connected between the liquid outlet of the second boiler 20 and the liquid inlet of the first boiler 10, and the first water pump 35 or the second water pump 36 can be started to supply the liquid in the second boiler 20 to the inside of the first boiler 10 through the liquid supply line 110. Since the liquid in the second boiler 20 is already heated liquid, the speed of generating steam in the first boiler 10 can be improved, and the beverage making efficiency can be improved.

[0109] Further, in the embodiment, the beverage device control method further comprises the following steps after starting the count of the number of times of the beverage preparation completion signal:

[0110] determining whether the value of the count satisfies a second threshold relationship;

[0111] when the value satisfies the second threshold relationship, controlling the second drain valve 22 on the second drain line 21 to be opened for a second preset time length to drain the liquid in the second boiler 20; the second drain line 21 is connected with the second boiler 20, and the second boiler 20 is used to provide liquid to the first boiler 10; wherein the second threshold relationship is that the value is an integer multiple of J; J is a natural number greater than or equal to 1.

[0112] In the embodiment, J can be equal to M, or can not be equal to M, and the first preset time length can be equal to the second preset time length, or can not be equal to the second preset time length. It can be understood that the second drain valve 22 can be opened synchronously with the first drain valve 15, or can not be opened synchronously with the first drain valve 15.

[0113] Preferably, J is greater than or equal to M. It can be understood that in the embodiment, the number of times of opening of the second drain line 21 is less than or equal to the number of times of opening of the first drain line 11, that is, the frequency of draining fluid from the second boiler 20 to the outside is less than or equal to the frequency of draining fluid from the first boiler 10 to the outside.

[0114] In the working process of the beverage device, after the beverage preparation is completed, a certain amount of liquid can be discharged from the second boiler 20 by controlling the second discharge valve 22 to open for a second preset time, while part of the dirt and impurities in the second boiler 20 are taken out, so as to ensure that the liquid in the second boiler 20 is clear. In this way, by supplying the liquid to the first boiler 10 through the second boiler 20, the liquid in the first boiler 10 can be further ensured to be clear, and the misjudgment of the liquid level sensor 13 can be further reduced.

[0115] Since the second boiler 20 is not used to generate steam, the scale generation speed in the second boiler 20 is less than that in the first boiler 10, and the second boiler 20 is used to supply liquid to the first boiler 10, the second boiler 20 only indirectly affects the water quality in the first boiler 10, so the number of times that the second discharge valve 21 is opened can be relatively reduced.

[0116] Further, referring to Figure 5 In the embodiment, the beverage device includes a liquid level sensor 13 installed in the first boiler 10, and the liquid level sensor 13 is used to detect the liquid level signal in the first boiler 10. The installation position of the liquid level sensor 13 is located in a position direction away from the input end of the first discharge pipeline 11, as shown in Figure 5 The input end of the first discharge pipeline 11 is connected to the bottom of the first boiler 10, and the liquid level sensor 13 is arranged at the top of the first boiler 10. Thus, in the working process of the first boiler 10, by discharging the liquid in the first boiler 10 through the first discharge pipeline 11, the error of the liquid level detection of the liquid level sensor 13 can be reduced.

[0117] In the embodiment, the controller is electrically connected with the liquid level sensor 13, and the controller is also used to receive the working parameter of the liquid level sensor 13 to obtain the liquid level signal in the first boiler 10, and when the working parameter meets the liquid supplement condition, the water pump is controlled to work to supply liquid from the liquid supply source 30 to the first boiler 10.

[0118] In the embodiment, the liquid can be directly supplied to the first boiler 10 through the liquid supply source 30, or indirectly supplied to the first boiler 10 through the second boiler 20.

[0119] The control method of the beverage device provided by the embodiment of the present application further includes a liquid supplement step, and the liquid supplement step includes:

[0120] detecting the working parameter of the liquid level sensor 13;

[0121] When the working parameter meets the liquid supplement condition, the water pump is controlled to start, and the liquid supply pipeline 110 is controlled to open to supply liquid from the second boiler 20 to the first boiler 10;

[0122] When the working parameter does not meet the liquid supplement condition, the liquid supply pipeline 110 is controlled to be closed.

[0123] In the embodiment, the liquid level sensor can be a liquid level probe 13, and the working parameter of the liquid level probe 13 can be the current or voltage of the circuit to which the liquid level probe 13 belongs.

[0124] When the liquid level in the first boiler 10 is higher than the first preset liquid level, the liquid level probe 13 can extend below the liquid surface of the first boiler 10, at this time, the circuit to which the liquid level probe 13 belongs is turned on through the direct contact of the liquid level probe 13 with the liquid in the first boiler 10, at this time, the working parameter of the liquid level probe 13 does not meet the liquid supplement condition.

[0125] The working parameter of the circuit to which the liquid level probe 13 belongs can change with the liquid level in the first boiler 10. When the liquid level in the first boiler 10 is lower than the first preset liquid level, the liquid level probe 13 is located outside the liquid surface, the liquid level probe 13 is out of direct contact with the liquid in the first boiler 10, but due to the presence of steam in the first boiler 10, the liquid level probe 13 can be in contact with the liquid in the first boiler 10 through the steam, at this time, the working parameter of the liquid level probe 13 meets the liquid supplement condition.

[0126] During the operation of the beverage equipment, a small amount of over-heated water (water plus steam) is discharged from the first boiler 10 for multiple times, which can carry out part of the dirt, keep the liquid in the first boiler 10 clean, prevent calcium and magnesium ions or other impurities from adhering to the liquid level probe 13 to affect the sensitivity of the liquid level probe 13, reduce the phenomenon that the evaporation and condensation balance of water is broken, reduce the pressure of the space above the liquid surface, keep the water-steam state in the first boiler 10 stable, and further reduce the misjudgment of the liquid level probe 13, prevent the phenomenon that the heating wire in the first boiler 10 is burned and blackened due to the low liquid level in the first boiler 10 but no liquid supplement due to the misjudgment of the liquid level probe 13, and prolong the service life of the first boiler 10.

[0127] Further, in an embodiment of the present application, the beverage equipment control method further comprises an emptying step, which comprises:

[0128] receiving an emptying signal;

[0129] controlling the first discharge valve 15 to open, so that the liquid in the first boiler 10 is discharged out of the first boiler 10 through the steam generated in the first boiler 10 and the first discharge pipeline 11.

[0130] In the embodiment, the user can select the emptying mode through the control panel, that is, send an emptying signal. Specifically, when the beverage equipment needs to be transported, the emptying mode can be selected to empty the liquid in the liquid circuit system 100 of the beverage equipment, so as to facilitate the transportation and prevent the liquid in the liquid circuit system 100 from expanding and contracting due to heat during the transportation, thereby damaging the liquid circuit system 100.

[0131] In the present embodiment, upon receiving the emptying signal, the supply of liquid to the first boiler 10 can be stopped. Upon receiving the emptying signal, steam can be generated by heating the first boiler 10. Of course, if there is already a certain amount of steam in the first boiler 10 upon receiving the emptying signal, the first boiler 10 can not be heated, and the first drain valve 15 can be opened directly, so that the liquid in the first boiler 10 can be emptied by the steam in the first boiler 10.

[0132] In the present embodiment, the first drain line 11 is connected to the bottom of the first boiler 10. The liquid in the first boiler 10 can be completely drained from the first drain line 11 under the action of the steam pressure in the first boiler 10, and will not be left in the first boiler 10, so that the first boiler 10 can be drained completely and efficiently.

[0133] When the liquid in the first boiler 10 is drained, it will not flow through the line between the first boiler 10 and the outlet assembly 33, so that the dirt in the first boiler 10 will not block the downstream line of the first boiler 10 or cause damage to the elements of the downstream line.

[0134] Continuing to refer to Figure 1 In an embodiment of the present application, the liquid circuit system further comprises a first steam supply line 120, the first steam supply line 120 being connected to the steam outlet of the first boiler 10 and the liquid outlet of the second boiler 20. The second boiler 20 can supply hot water to the first boiler 10 through the liquid outlet. The liquid outlet of the second boiler 20 is located at the top of the second boiler 20, and the first steam supply line 120 is used to supply steam in the first boiler 10 to the second boiler 20, so that the fluid in the second boiler 20 can be drained through the second drain line 21 by the steam.

[0135] In the present embodiment, the beverage apparatus control method, before the first drain valve 15 is controlled to open, the emptying step further comprises:

[0136] controlling the first steam supply line 120 to open, so as to supply steam in the first boiler 10 to the second boiler 20;

[0137] controlling the second drain valve 22 on the second drain line 21 to open, so as to drain the liquid in the second boiler 20 through the second drain line 21 by the steam from the first boiler 10.

[0138] Before the liquid in the first boiler 10 is drained through the first drain line 11 by the steam generated in the first boiler 10, the second boiler 20 is emptied by the steam generated in the first boiler 10.

[0139] In the embodiment, during the emptying process, the pressure in the second boiler 20 can be increased by supplying steam in the first boiler 10 into the second boiler 20 through the first steam supply line 120, so that the liquid in the second boiler 20 can be quickly emptied, and the liquid can be avoided to be left in the second boiler 20, and the emptying effect is good.

[0140] The connection point of the second boiler 20 and the first steam supply line 120 is located at the top of the second boiler 20, so that the steam can be directly supplied above the liquid surface of the second boiler 20. The input end of the second discharge line 21 is connected to the bottom of the second boiler 20, that is, the steam enters from the top of the second boiler 20, and the liquid is discharged from the bottom, so that the emptying effect is good, and the emptying efficiency is high.

[0141] Further, in an embodiment of the present application, the liquid path system 100 further comprises a second steam supply line 130. The input end of the second steam supply line 130 is connected to the steam outlet of the first boiler 10, and the output end is connected to the outlet assembly 33.

[0142] In the embodiment, the steam outlet of the first boiler 10 can be arranged at the top of the first boiler 10. The first boiler 10 can be provided with two steam outlets, which are respectively connected to the first steam supply line 120 and the second steam supply line 130.

[0143] In the beverage equipment control method provided by the embodiment, before the first discharge valve 15 is controlled to be opened, the emptying step further comprises:

[0144] The second steam supply line 130 is controlled to be opened, so that the steam in the first boiler 10 enters the second steam supply line 130, and the liquid in the second steam supply line 130 is discharged from the outlet assembly 33.

[0145] The liquid in the second steam supply line 130 and the downstream pipeline can be completely discharged from the outlet assembly 33 under the action of the steam, so that the liquid can be avoided to be left in the second steam supply line 130 and the downstream pipeline, and the discharge efficiency is high.

[0146] In the embodiment, the second steam supply line 130 can comprise a first steam cleaning branch line 131 and a second steam cleaning branch line 132, and the second steam cleaning branch line 132 and the first steam cleaning branch line 131 are connected to the steam outlet of the first boiler 10 and the outlet assembly 33. The milk box 34 is arranged on the second steam cleaning branch line 132, and the brewer 38 is arranged on the first steam cleaning branch line 131.

[0147] Further, in an embodiment of the present application, the first steam supply line 120 is connected with an output communication valve 40. The output communication valve 40 comprises a first valve port 41, a second valve port 42 and a third valve port 43. The first steam supply line 120 can comprise a first steam supply line branch 121 connecting the steam outlet of the first boiler 10 and the first valve port 41, and can further comprise a communication line 122 connecting the second valve port 42 and the liquid outlet of the second boiler 20. The third valve port 43 is connected with the liquid inlet of the first boiler 10 through a liquid supply line 110.

[0148] The steam in the first boiler 10 can be supplied into the second boiler 20 through the first steam supply line branch 121, the output communication valve 40 and the communication line 122 in sequence, so as to facilitate the complete discharge of the liquid in the second boiler 20 through the second discharge line 21. The liquid in the second boiler 20 can also be supplied into the first boiler 10 through the communication line 122, the output communication valve 40 and the liquid supply line 110 in sequence, so as to realize the liquid supplement of the first boiler 10 by the second boiler 20.

[0149] In the embodiment, the output communication valve 40 can selectively open or close any valve port. The communication line 122 can be used to deliver steam from the output communication valve 40 to the second boiler 20, and can also be used to deliver liquid from the second boiler 20 to the output communication valve 40. The communication line 122 has high functional integration, and the overall pipeline is compact.

[0150] The first steam supply line branch 121 is further connected with a first electromagnetic valve 123. When it is required to supply the steam in the first boiler 10 into the second boiler 20, such as when a discharge instruction is received, the first boiler 10 can be heated, the first electromagnetic valve 123 can be opened, and the first valve port 41 and the second valve port 42 of the output communication valve 40 can be opened. The first steam supply line branch 121 is in communication with the communication line 122 to form the first steam supply line 120. The steam in the first boiler 10 is supplied into the second boiler 20 through the first steam supply line 120, so as to facilitate the discharge of the liquid in the second boiler 20.

[0151] When it is required to supplement the liquid in the first boiler 10 by the second boiler 20, the second water pump 36 between the second boiler 20 and the liquid supply source 30 can be started, and the second valve port 42 and the third valve port 43 of the output communication valve 40 can be opened. The communication line 122 is in communication with the liquid supply line 110, and the liquid in the second boiler 20 can be supplied into the first boiler 10 through the communication line 122 and the liquid supply line 110.

[0152] In summary, the communication line 122 can be used to supply steam to the second boiler 20 and can also be used to supply liquid to the first boiler 10. The pipeline arrangement can be reduced, and the overall pipeline can be simplified.

[0153] Further, in an embodiment of the present application, the liquid circuit system 100 further comprises a cold liquid line 140, which can supply liquid directly from the liquid supply source 30 to the first boiler 10. In this embodiment, the output communication valve 40 further comprises a fourth valve port 44. The cold liquid line 140 connects the liquid supply source 30 and the fourth valve port 44, and the cold liquid line 140 is further provided with a first water pump 35 between the liquid supply source 30 and the fourth valve port 44.

[0154] The liquid supply line 110 is further connected with a first multi-way valve 50, which comprises a first inlet 51, a first outlet 53 and a second outlet 54. The first inlet 51 is connected with the third valve port 43, the first outlet 53 is connected with one of the outlet assembly 33 and the brewer 38, and the second outlet 54 is connected with the liquid inlet of the first boiler 10 to form a part of the liquid supply line 110.

[0155] In this embodiment, the output communication valve 40 can be a mixing valve. When the first water pump 35 is activated to supply cold water to the output communication valve 40 through the cold liquid line 140, and the first solenoid valve 123 is opened to supply steam to the output communication valve 40 through the first steam supply line branch 121, the steam and the cold water can be mixed to form hot water.

[0156] The output communication valve 40 can selectively deliver hot water from the second boiler 20 to the first multi-way valve 50, or deliver hot water formed by mixing cold water from the cold liquid line 140 and steam from the first boiler 10 to the first multi-way valve 50, or deliver cold water from the cold liquid line 140 to the first multi-way valve 50. The first multi-way valve 50 is used to selectively deliver liquid to one of the outlet assembly 33 and the brewer 38 through the first outlet 53, or deliver liquid to the first boiler 10 through the second outlet 54.

[0157] It can be understood that, through the output communication valve 40 and the first multi-way valve 50, hot water can be selectively supplied from the second boiler 20 to the first boiler 10, or cold water can be directly supplied to the first boiler 10 through the cold liquid line 140, or hot water can be supplied to one of the outlet assembly 33 and the brewer 38 through the output communication valve 40.

[0158] Specifically, when the first water pump 35 is activated, the fourth valve port 44 and the third valve port 43 of the output communication valve 40, and the first inlet 51 and the second outlet 54 of the first multi-way valve 50 are opened, cold water can be directly supplied to the first boiler 10 through the cold liquid line 140.

[0159] When the first water pump 35 or the second water pump 36 is activated, the second valve port 42 and the third valve port 43 of the output communication valve 40, and the first inlet 51 and the second outlet 54 of the first multi-way valve 50 are opened, liquid in the second boiler 20 can be supplied to the first boiler 10.

[0160] The first water pump 35 is started, the first electromagnetic valve 123 of the first steam supply pipeline branch 121 is opened, and the first valve port 41, the fourth valve port 44, the third valve port 43 of the output communication valve 40 and the first inlet 51 and the first outlet 53 of the first multi-way valve 50 are opened, so that the cold water of the liquid supply source 30 and the steam in the first boiler 10 are mixed in the output communication valve 40 to form hot water, and the formed hot water can be supplied to one of the outlet assembly 33 and the brewer 38.

[0161] The liquid outlet of the second boiler 20 can be connected with a communication end 23 and a hot water output end 24, and the communication end 23 can be connected with the second valve port 42 of the output communication valve 40 through the communication pipeline 122. The hot water output end 24 can be connected with the other one of the outlet assembly 33 and the brewer 38 through the hot water delivery pipeline, so that the hot water of the second boiler 20 can be directly supplied to the other one of the outlet assembly 33 and the brewer 38 through the hot water delivery pipeline. In this way, the liquid circuit system 100 can have two hot liquid supply pipelines, and the working efficiency of the beverage equipment can be improved.

[0162] For example, when making American coffee, the hot water output end 24 can be connected with the brewer 38 through the hot water delivery pipeline to supply hot water to the brewer to realize high-temperature and high-pressure extraction of coffee, and at the same time, the cold water of the liquid supply source 30 and the steam in the first boiler 10 are mixed in the output communication valve 40 to form hot water, and the formed hot water is supplied to the outlet assembly 33, so that the American coffee can be efficiently made.

[0163] In the embodiment, the first steam supply pipeline branch 121 can be used to supply steam to the second boiler 20 and to mix the cold water supplied by the cold liquid pipeline 140 to form hot water to be supplied to the brewer 38 or the outlet assembly 33, so that the pipeline arrangement is simplified.

[0164] The first steam supply pipeline branch 121 is further provided with a first one-way valve 124, which is arranged downstream of the first electromagnetic valve 123. The first one-way valve 124 allows liquid to be delivered from the first boiler 10 to the output communication valve 40, and prevents liquid from being delivered from the output communication valve 40 to the first boiler 10. In this way, the pressure downstream of the output communication valve 40, such as the pressure in the second boiler 20, can be prevented from entering the first steam supply pipeline branch 121 in the opposite direction, so that the first electromagnetic valve 123 is opened under the action of the pressure.

[0165] In the embodiment, the first steam cleaning branch 131 connects the steam outlet of the first boiler 10 with the second inlet 52 of the first multi-way valve 50.

[0166] The second steam supply line 130 can be connected with a second multi-way valve 60, and multiple outlets of the second multi-way valve 60 can be respectively connected with the first steam cleaning branch line 131 and the second steam cleaning branch line 132, and one outlet of the second multi-way valve 60 can be further connected with the milk frother.

[0167] Further, in an embodiment of the present application, the beverage equipment control method further comprises a descaling step, and the descaling step comprises:

[0168] receiving a descaling signal;

[0169] controlling the water pump to work and controlling the liquid supply line 110 to open, so as to supply the cleaning solution from the liquid supply source 30 to the second boiler 20 and supply the cleaning solution from the second boiler 20 to the first boiler 10;

[0170] controlling the first boiler 10 to heat up and controlling the first discharge valve 15 to open, so as to discharge the cleaning solution in the first boiler 10 through the steam generated in the first boiler 10 and through the first discharge line 11.

[0171] In the embodiment, the liquid supply line 110 connects the liquid inlet of the first boiler 10 and the liquid outlet of the second boiler 20. The user can select the descaling mode through the control panel of the beverage equipment to send the descaling signal.

[0172] The liquid supply source 30 can be specifically a second liquid supply source 32 for providing the cleaning solution. When the beverage equipment receives the descaling signal, the cleaning solution in the second liquid supply source 32 is supplied into the first boiler 10 and the second boiler 20. After the cleaning solution reacts with the dirt in the first boiler 10 and the second boiler 20 for a period of time, specifically, after the cleaning solution is supplied into the first boiler 10 and the second boiler 20 for a preset time, the first discharge line 11 is opened, so that the cleaning solution can fully react with the dirt in the first boiler 10 and the second boiler 20, thereby achieving a better descaling effect.

[0173] During the descaling process, the cleaning solution including the dirt in the first boiler 10 is directly discharged from the first discharge line 11, and does not flow through the downstream line between the first boiler 10 and the outlet assembly 33, so that the dirt does not cause blockage of the downstream line.

[0174] Further, in the embodiment, before the first discharge valve 15 is controlled to open, the descaling step further comprises:

[0175] controlling the first steam supply line 120 to open, so as to supply the steam generated in the first boiler 10 to the second boiler 20, and the first steam supply line 120 connects the steam outlet of the first boiler 10 and the liquid outlet of the second boiler 20;

[0176] The second drain valve 22 on the second drain line 21 is opened to drain the cleaning solution in the second boiler 20 out of the second boiler 20 through the second drain line 21 by steam.

[0177] The cleaning solution in the second boiler 20 is first drained out of the second boiler 20 by steam generated in the first boiler 10 through the second drain line 21 before the cleaning solution in the first boiler 10 is drained out of the first boiler 10 by steam generated in the first boiler 10 through the first drain line 11.

[0178] In this embodiment, the second drain line 21 is connected to the bottom of the second boiler 20. By opening the first steam supply line 120 to supply steam in the first boiler 10 into the second boiler 20, the pressure in the second boiler 20 is increased so that the cleaning solution in the second boiler 20 is efficiently drained out of the second boiler 20 through the second drain line 21 completely, together with the dirt in the second boiler 20.

[0179] It should be understood that although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the present specification is described in this way only for the sake of clarity, and those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that those skilled in the art can understand.

[0180] The above series of detailed descriptions are only specific descriptions of the feasible embodiments of the present application, and are not intended to limit the protection scope of the present application, and any equivalent embodiments or changes made without departing from the spirit of the present application should be included in the protection scope of the present application.

Claims

1. A method of controlling a beverage apparatus, characterized by, The control method comprises the following steps: starting a count of the number of beverage preparation completion signals after receiving an Nth beverage preparation signal; determining whether the value of the count meets a first threshold relationship; when the value meets the first threshold relationship, controlling a first discharge valve on a first discharge pipeline to open for a first preset time length to discharge part of the liquid in a first boiler; the first discharge pipeline is connected to the first boiler, and the first boiler is used to generate steam; the first threshold relationship is that the value is an integer multiple of M; wherein N and M are both natural numbers greater than or equal to 1.

2. The beverage equipment control method of claim 1, wherein, After starting the count of the number of beverage preparation completion signals, the control method further comprises: determining whether the value of the count meets a second threshold relationship; when the value meets the second threshold relationship, controlling a second discharge valve on a second discharge pipeline to open for a second preset time length to discharge the liquid in a second boiler; the second discharge pipeline is connected to the second boiler, and the second boiler is used to supply liquid to the first boiler; the second threshold relationship is that the value is an integer multiple of J; wherein J is a natural number greater than or equal to 1.

3. The method of claim 2, wherein J is greater than or equal to M.

4. The method of claim 1, wherein The first boiler is provided with a liquid level sensor, and the control method further comprises a liquid supplementing step, which comprises: detecting the working parameter of the liquid level sensor; when the working parameter meets the liquid supplementing condition, controlling a water pump to start and controlling a liquid supply pipeline to open to supply liquid from the second boiler to the first boiler; the liquid supply pipeline is connected to the liquid outlet of the second boiler and the liquid inlet of the first boiler; when the working parameter does not meet the liquid supplementing condition, controlling the liquid supply pipeline to close.

5. The drink equipment control method according to any one of claims 1 to 4, characterized in that, The first discharge pipeline is connected to the bottom of the first boiler, and the control method further comprises a draining step, which comprises: receiving a draining signal; controlling the first discharge valve to open to discharge the liquid in the first boiler through the steam generated in the first boiler through the first discharge pipeline.

6. The method of claim 5, wherein Before controlling the first discharge valve to open, the draining step further comprises: controlling a first steam supply pipeline to open to supply the steam in the first boiler to the second boiler; the first steam supply pipeline is connected to the steam outlet of the first boiler and the liquid outlet of the second boiler; controlling a second discharge valve on a second discharge pipeline to open to discharge the liquid in the second boiler through the steam from the first boiler through the second discharge pipeline; the second discharge pipeline is connected to the bottom of the second boiler.

7. The drink equipment control method according to any one of claims 1 to 4, characterized in that, The first discharge pipeline is connected to the bottom of the first boiler, and the control method further comprises a descaling step, which comprises: receiving a descaling signal; controlling a water pump to work and controlling a liquid supply pipeline to open to supply a cleaning solution from a liquid supply source to the second boiler and to supply the cleaning solution from the second boiler to the first boiler; the liquid supply pipeline is connected to the liquid inlet of the first boiler and the liquid outlet of the second boiler; controlling the first boiler to be heated up, and controlling the first drain valve to be opened to drain the cleaning solution in the first boiler out of the first boiler through the steam generated in the first boiler.

8. The beverage equipment control method of claim 7, wherein, Before the controlling the first drain valve to be opened, the descaling step further comprises: controlling a first steam supply line to be opened to supply the steam generated by the first boiler to the second boiler, the first steam supply line connecting a steam outlet of the first boiler and a liquid outlet of the second boiler; controlling a second drain valve on a second drain line to be opened to drain the cleaning solution in the second boiler out of the second boiler through the steam, the second drain line being connected to a bottom of the second boiler.

9. A beverage device, comprising: a liquid supply source; an outlet assembly for outputting a beverage; a first boiler connected between the liquid supply source and the outlet assembly for generating steam; characterized in that it further comprises a first drain line, an input end of the first drain line being connected to the first boiler, and an output end of the first drain line being a fluid drain outlet, a first drain valve being arranged between the input end of the first drain line and the output end of the first drain line; a controller electrically connected with the first drain valve, the controller being configured to perform the beverage device control method of any one of claims 1-8.

10. The beverage equipment as described in claim 9, characterized in that, the input end of the first drain line being connected to a bottom of the first boiler.

11. The beverage equipment as described in claim 9, characterized in that, further comprising a liquid level sensor installed in the first boiler, the liquid level sensor being installed at a position away from a position direction of the input end of the first drain line, the liquid level sensor being used to detect a liquid level signal in the first boiler.

12. The beverage dispensing apparatus of claim 11, wherein, a water pump connected between the liquid supply source and the first boiler; the controller being electrically connected with the liquid level sensor, the controller being further configured to receive a working parameter of the liquid level sensor to obtain the liquid level signal in the first boiler, and to control the water pump to work to supply liquid from the liquid supply source to the first boiler when the working parameter meets a liquid supplement condition.

13. Beverage dispensing apparatus as claimed in any of the claims 9-12, characterized in that further comprising a second boiler and a second drain line, the second boiler being connected between the liquid supply source and the outlet assembly, a water pump being connected between the second boiler and the liquid supply source, the second boiler being used to generate hot water, an input end of the second drain line being connected to a bottom of the second boiler, an output end of the second drain line being a fluid drain outlet, a second drain valve being arranged between the input end of the second drain line and the output end of the second drain line.

14. The beverage dispensing apparatus of claim 13, wherein, further comprising a first steam supply line connecting a steam outlet of the first boiler and a liquid outlet of the second boiler, the liquid outlet of the second boiler being located at a top of the second boiler, the first steam supply line being used to supply the steam in the first boiler to the second boiler to drain the liquid in the second boiler out through the second drain line by the steam.

15. The beverage dispensing apparatus of claim 14, wherein, The first steam supply pipeline is connected with an output communication valve, the output communication valve comprises a first valve port, a second valve port and a third valve port, the first steam supply pipeline comprises a first steam supply pipeline branch connecting the steam outlet of the first boiler and the first valve port, the first steam supply pipeline further comprises a communication pipeline connecting the second valve port and the liquid outlet of the second boiler, and a liquid supply pipeline is connected between the third valve port and the liquid inlet of the first boiler; The steam of the first boiler can be supplied to the second boiler in sequence through the first steam supply pipeline branch, the output communication valve and the communication pipeline; The hot water of the second boiler can be supplied to the first boiler in sequence through the communication pipeline, the output communication valve and the liquid supply pipeline.

16. A drinks apparatus as claimed in any one of claims 9 to 12, characterised in that, The first discharge valve comprises a liquid outlet valve body, the liquid outlet valve body comprises an inlet, an outlet and a liquid channel, the inlet is in communication with the first boiler; One end of the liquid channel close to the inlet is a flow passage port, and the other end of the liquid channel is in communication with the outlet; The first discharge valve further comprises an electromagnetic driving assembly and a valve core assembly, the electromagnetic driving assembly is used to drive the valve core assembly to move to close or open the flow passage port, and when the valve core assembly opens the flow passage port, the inlet and the outlet are in fluid communication through the liquid channel.

17. The beverage dispensing apparatus of claim 16, wherein the beverage dispensing apparatus is configured to dispense a beverage from the beverage dispensing apparatus in response to a user input. The first discharge valve further comprises a reset element connected with the valve core assembly; Under the driving of the electromagnetic driving assembly, the valve core assembly can move away from the flow passage port to open the flow passage port; Under the driving of the reset element, the valve core assembly can move towards the flow passage port to close the flow passage port.

18. The beverage dispensing apparatus of claim 16, wherein, The valve core assembly comprises a sealing element used to seal the flow passage port, the liquid outlet valve body comprises a flow passage wall forming the liquid channel, and one end of the flow passage wall forming the flow passage port can abut against the sealing element to close the flow passage port.

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